【UE4 C++】UGameplayStatics 源代码
// Copyright Epic Games, Inc. All Rights Reserved.
#pragma once
#include "CoreMinimal.h"
#include "UObject/ObjectMacros.h"
#include "UObject/Object.h"
#include "Templates/SubclassOf.h"
#include "Engine/EngineTypes.h"
#include "UObject/Interface.h"
#include "GameFramework/Actor.h"
#include "CollisionQueryParams.h"
#include "Engine/LatentActionManager.h"
#include "GameFramework/PlayerController.h"
#include "Kismet/BlueprintFunctionLibrary.h"
#include "Kismet/KismetSystemLibrary.h"
#include "Sound/DialogueTypes.h"
#include "GameplayStaticsTypes.h"
#include "Particles/WorldPSCPool.h"
#include "GameplayStatics.generated.h"
class UAudioComponent;
class UBlueprint;
class UDecalComponent;
class UDialogueWave;
class UParticleSystem;
class UParticleSystemComponent;
class USaveGame;
class USceneComponent;
class USoundAttenuation;
class USoundBase;
class USoundConcurrency;
class UStaticMesh;
class FMemoryReader;
struct FDialogueContext;
/** Delegate called from AsyncLoadGameFromSlot. First two parameters are passed in SlotName and UserIndex, third parameter is a bool indicating success (true) or failure (false). */
DECLARE_DELEGATE_ThreeParams(FAsyncSaveGameToSlotDelegate, const FString&, const int32, bool);
/** Delegate called from AsyncLoadGameFromSlot. First two parameters are passed in SlotName and UserIndex, third parameter is the returned SaveGame, or null if it failed to load. */
DECLARE_DELEGATE_ThreeParams(FAsyncLoadGameFromSlotDelegate, const FString&, const int32, USaveGame*);
/** Static class with useful gameplay utility functions that can be called from both Blueprint and C++ */
UCLASS()
class ENGINE_API UGameplayStatics : public UBlueprintFunctionLibrary
{
GENERATED_UCLASS_BODY()
// --- Create Object
UFUNCTION(BlueprintCallable, Category = "Spawning", meta = (BlueprintInternalUseOnly = "true"))
static UObject* SpawnObject(TSubclassOf<UObject> ObjectClass, UObject* Outer);
// --- Spawning functions ------------------------------
/** Spawns an instance of a blueprint, but does not automatically run its construction script. */
UFUNCTION(BlueprintCallable, Category="Spawning", meta=(WorldContext="WorldContextObject", UnsafeDuringActorConstruction = "true", BlueprintInternalUseOnly = "true", DeprecatedFunction, DeprecationMessage="Use BeginSpawningActorFromClass"))
static class AActor* BeginSpawningActorFromBlueprint(const UObject* WorldContextObject, const class UBlueprint* Blueprint, const FTransform& SpawnTransform, bool bNoCollisionFail);
UE_DEPRECATED(4.9, "This function is deprecated. Please use BeginDeferredActorSpawnFromClass instead.")
UFUNCTION(BlueprintCallable, Category="Spawning", meta=(WorldContext="WorldContextObject", UnsafeDuringActorConstruction = "true", BlueprintInternalUseOnly = "true"))
static class AActor* BeginSpawningActorFromClass(const UObject* WorldContextObject, TSubclassOf<AActor> ActorClass, const FTransform& SpawnTransform, bool bNoCollisionFail = false, AActor* Owner = nullptr);
/** Spawns an instance of an actor class, but does not automatically run its construction script. */
UFUNCTION(BlueprintCallable, Category = "Spawning", meta = (WorldContext = "WorldContextObject", UnsafeDuringActorConstruction = "true", BlueprintInternalUseOnly = "true"))
static class AActor* BeginDeferredActorSpawnFromClass(const UObject* WorldContextObject, TSubclassOf<AActor> ActorClass, const FTransform& SpawnTransform, ESpawnActorCollisionHandlingMethod CollisionHandlingOverride = ESpawnActorCollisionHandlingMethod::Undefined, AActor* Owner = nullptr);
/** 'Finish' spawning an actor. This will run the construction script. */
UFUNCTION(BlueprintCallable, Category="Spawning", meta=(UnsafeDuringActorConstruction = "true", BlueprintInternalUseOnly = "true"))
static class AActor* FinishSpawningActor(class AActor* Actor, const FTransform& SpawnTransform);
// --- Actor functions ------------------------------
/** Find the average location (centroid) of an array of Actors */
UFUNCTION(BlueprintCallable, Category="Utilities|Transformation")
static FVector GetActorArrayAverageLocation(const TArray<AActor*>& Actors);
/** Bind the bounds of an array of Actors */
UFUNCTION(BlueprintCallable, Category="Collision")
static void GetActorArrayBounds(const TArray<AActor*>& Actors, bool bOnlyCollidingComponents, FVector& Center, FVector& BoxExtent);
/**
* Find the first Actor in the world of the specified class.
* This is a slow operation, use with caution e.g. do not use every frame.
* @param ActorClass Class of Actor to find. Must be specified or result will be empty.
* @return Actor of the specified class.
*/
UFUNCTION(BlueprintCallable, Category="Utilities", meta=(WorldContext="WorldContextObject", DeterminesOutputType="ActorClass"))
static class AActor* GetActorOfClass(const UObject* WorldContextObject, TSubclassOf<AActor> ActorClass);
/**
* Find all Actors in the world of the specified class.
* This is a slow operation, use with caution e.g. do not use every frame.
* @param ActorClass Class of Actor to find. Must be specified or result array will be empty.
* @param OutActors Output array of Actors of the specified class.
*/
UFUNCTION(BlueprintCallable, Category="Utilities", meta=(WorldContext="WorldContextObject", DeterminesOutputType="ActorClass", DynamicOutputParam="OutActors"))
static void GetAllActorsOfClass(const UObject* WorldContextObject, TSubclassOf<AActor> ActorClass, TArray<AActor*>& OutActors);
/**
* Find all Actors in the world with the specified interface.
* This is a slow operation, use with caution e.g. do not use every frame.
* @param Interface Interface to find. Must be specified or result array will be empty.
* @param OutActors Output array of Actors of the specified interface.
*/
UFUNCTION(BlueprintCallable, Category="Utilities", meta=(WorldContext="WorldContextObject", DeterminesOutputType="Interface", DynamicOutputParam="OutActors"))
static void GetAllActorsWithInterface(const UObject* WorldContextObject, TSubclassOf<UInterface> Interface, TArray<AActor*>& OutActors);
/**
* Find all Actors in the world with the specified tag.
* This is a slow operation, use with caution e.g. do not use every frame.
* @param Tag Tag to find. Must be specified or result array will be empty.
* @param OutActors Output array of Actors of the specified tag.
*/
UFUNCTION(BlueprintCallable, Category="Utilities", meta=(WorldContext="WorldContextObject"))
static void GetAllActorsWithTag(const UObject* WorldContextObject, FName Tag, TArray<AActor*>& OutActors);
/**
* Find all Actors in the world of the specified class with the specified tag.
* This is a slow operation, use with caution e.g. do not use every frame.
* @param Tag Tag to find. Must be specified or result array will be empty.
* @param ActorClass Class of Actor to find. Must be specified or result array will be empty.
* @param OutActors Output array of Actors of the specified tag.
*/
UFUNCTION(BlueprintCallable, Category = "Utilities", meta = (WorldContext="WorldContextObject", DeterminesOutputType="ActorClass", DynamicOutputParam="OutActors"))
static void GetAllActorsOfClassWithTag(const UObject* WorldContextObject, TSubclassOf<AActor> ActorClass, FName Tag, TArray<AActor*>& OutActors);
// --- Player functions ------------------------------
/** Returns the game instance object */
UFUNCTION(BlueprintPure, Category="Game", meta=(WorldContext="WorldContextObject"))
static class UGameInstance* GetGameInstance(const UObject* WorldContextObject);
/** Returns the player controller at the specified player index */
UFUNCTION(BlueprintPure, Category="Game", meta=(WorldContext="WorldContextObject", UnsafeDuringActorConstruction="true"))
static class APlayerController* GetPlayerController(const UObject* WorldContextObject, int32 PlayerIndex);
/** Returns the player controller that has the given controller ID */
UFUNCTION(BlueprintPure, Category = "Game", meta = (WorldContext = "WorldContextObject", UnsafeDuringActorConstruction = "true"))
static class APlayerController* GetPlayerControllerFromID(const UObject* WorldContextObject, int32 ControllerID);
/** Returns the player pawn at the specified player index */
UFUNCTION(BlueprintPure, Category="Game", meta=(WorldContext="WorldContextObject", UnsafeDuringActorConstruction="true"))
static class APawn* GetPlayerPawn(const UObject* WorldContextObject, int32 PlayerIndex);
/** Returns the player character (NULL if the player pawn doesn't exist OR is not a character) at the specified player index */
UFUNCTION(BlueprintPure, Category="Game", meta=(WorldContext="WorldContextObject", UnsafeDuringActorConstruction="true"))
static class ACharacter* GetPlayerCharacter(const UObject* WorldContextObject, int32 PlayerIndex);
/** Returns the player's camera manager for the specified player index */
UFUNCTION(BlueprintPure, Category="Game", meta=(WorldContext="WorldContextObject", UnsafeDuringActorConstruction="true"))
static class APlayerCameraManager* GetPlayerCameraManager(const UObject* WorldContextObject, int32 PlayerIndex);
/** Create a new player for this game.
* @param ControllerId The ID of the controller that the should control the newly created player. A value of -1 specifies to use the next available ID
* @param bSpawnPawn Whether a player controller should be spawned immediately for this player. If false a player controller will not be created automatically until transition to the next map.
* @return The created player controller if one is created.
*/
UFUNCTION(BlueprintCallable, Category="Game", meta=(WorldContext="WorldContextObject", AdvancedDisplay="2", UnsafeDuringActorConstruction="true"))
static class APlayerController* CreatePlayer(const UObject* WorldContextObject, int32 ControllerId = -1, bool bSpawnPlayerController = true);
/** Removes a player from this game.
* @param Player The player controller of the player to be removed
* @param bDestroyPawn Whether the controlled pawn should be deleted as well
*/
UFUNCTION(BlueprintCallable, Category="Game", meta=(UnsafeDuringActorConstruction="true"))
static void RemovePlayer(APlayerController* Player, bool bDestroyPawn);
/**
* Gets what controller ID a Player is using
* @param Player The player controller of the player to get the ID of
* @return The ID of the passed in player. -1 if there is no controller for the passed in player
*/
UFUNCTION(BlueprintPure, Category="Game", meta=(UnsafeDuringActorConstruction="true"))
static int32 GetPlayerControllerID(APlayerController* Player);
/**
* Sets what controller ID a Player should be using
* @param Player The player controller of the player to change the controller ID of
* @param ControllerId The controller ID to assign to this player
*/
UFUNCTION(BlueprintCallable, Category="Game", meta=(UnsafeDuringActorConstruction="true"))
static void SetPlayerControllerID(APlayerController* Player, int32 ControllerId);
// --- Level Streaming functions ------------------------
/** Stream the level (by Name); Calling again before it finishes has no effect */
UFUNCTION(BlueprintCallable, meta=(WorldContext="WorldContextObject", Latent = "", LatentInfo = "LatentInfo", DisplayName = "Load Stream Level (by Name)"), Category="Game")
static void LoadStreamLevel(const UObject* WorldContextObject, FName LevelName, bool bMakeVisibleAfterLoad, bool bShouldBlockOnLoad, FLatentActionInfo LatentInfo);
/** Stream the level (by Object Reference); Calling again before it finishes has no effect */
UFUNCTION(BlueprintCallable, meta=(WorldContext="WorldContextObject", Latent = "", LatentInfo = "LatentInfo", DisplayName = "Load Stream Level (by Object Reference)"), Category="Game")
static void LoadStreamLevelBySoftObjectPtr(const UObject* WorldContextObject, const TSoftObjectPtr<UWorld> Level, bool bMakeVisibleAfterLoad, bool bShouldBlockOnLoad, FLatentActionInfo LatentInfo);
/** Unload a streamed in level (by Name)*/
UFUNCTION(BlueprintCallable, meta=(WorldContext="WorldContextObject", Latent = "", LatentInfo = "LatentInfo", DisplayName = "Unload Stream Level (by Name)"), Category="Game")
static void UnloadStreamLevel(const UObject* WorldContextObject, FName LevelName, FLatentActionInfo LatentInfo, bool bShouldBlockOnUnload);
/** Unload a streamed in level (by Object Reference)*/
UFUNCTION(BlueprintCallable, meta=(WorldContext="WorldContextObject", Latent = "", LatentInfo = "LatentInfo", DisplayName = "Unload Stream Level (by Object Reference)"), Category="Game")
static void UnloadStreamLevelBySoftObjectPtr(const UObject* WorldContextObject, const TSoftObjectPtr<UWorld> Level, FLatentActionInfo LatentInfo, bool bShouldBlockOnUnload);
/** Returns level streaming object with specified level package name */
UFUNCTION(BlueprintPure, meta=(WorldContext="WorldContextObject"), Category="Game")
static class ULevelStreaming* GetStreamingLevel(const UObject* WorldContextObject, FName PackageName);
/** Flushes level streaming in blocking fashion and returns when all sub-levels are loaded / visible / hidden */
UFUNCTION(BlueprintCallable, meta=(WorldContext="WorldContextObject"), Category = "Game")
static void FlushLevelStreaming(const UObject* WorldContextObject);
/** Cancels all currently queued streaming packages */
UFUNCTION(BlueprintCallable, Category = "Game")
static void CancelAsyncLoading();
/**
* Travel to another level
*
* @param LevelName the level to open
* @param bAbsolute if true options are reset, if false options are carried over from current level
* @param Options a string of options to use for the travel URL
*/
UFUNCTION(BlueprintCallable, meta=(WorldContext="WorldContextObject", AdvancedDisplay = "2", DisplayName = "Open Level (by Name)"), Category="Game")
static void OpenLevel(const UObject* WorldContextObject, FName LevelName, bool bAbsolute = true, FString Options = FString(TEXT("")));
/**
* Travel to another level
*
* @param Level the level to open
* @param bAbsolute if true options are reset, if false options are carried over from current level
* @param Options a string of options to use for the travel URL
*/
UFUNCTION(BlueprintCallable, meta=(WorldContext="WorldContextObject", AdvancedDisplay = "2", DisplayName = "Open Level (by Object Reference)"), Category="Game")
static void OpenLevelBySoftObjectPtr(const UObject* WorldContextObject, const TSoftObjectPtr<UWorld> Level, bool bAbsolute = true, FString Options = FString(TEXT("")));
/**
* Get the name of the currently-open level.
*
* @param bRemovePrefixString remove any streaming- or editor- added prefixes from the level name.
*/
UFUNCTION(BlueprintCallable, meta = (WorldContext = "WorldContextObject", AdvancedDisplay = "1"), Category = "Game")
static FString GetCurrentLevelName(const UObject* WorldContextObject, bool bRemovePrefixString = true);
// --- Global functions ------------------------------
/** Returns the current GameModeBase or Null if it can't be retrieved, such as on the client */
UFUNCTION(BlueprintPure, Category="Game", meta=(WorldContext="WorldContextObject"))
static class AGameModeBase* GetGameMode(const UObject* WorldContextObject);
/** Returns the current GameStateBase or Null if it can't be retrieved */
UFUNCTION(BlueprintPure, Category="Game", meta=(WorldContext="WorldContextObject"))
static class AGameStateBase* GetGameState(const UObject* WorldContextObject);
/** Returns the class of a passed in Object, will always be valid if Object is not NULL */
UFUNCTION(BlueprintPure, meta=(DisplayName = "GetClass", DeterminesOutputType = "Object"), Category="Utilities")
static class UClass *GetObjectClass(const UObject *Object);
/**
* Gets the current global time dilation.
* @return Current time dilation.
*/
UFUNCTION(BlueprintPure, Category="Utilities|Time", meta=(WorldContext="WorldContextObject") )
static float GetGlobalTimeDilation(const UObject* WorldContextObject);
/**
* Sets the global time dilation.
* @param TimeDilation value to set the global time dilation to
*/
UFUNCTION(BlueprintCallable, Category="Utilities|Time", meta=(WorldContext="WorldContextObject") )
static void SetGlobalTimeDilation(const UObject* WorldContextObject, float TimeDilation);
/**
* Sets the game's paused state
* @param bPaused Whether the game should be paused or not
* @return Whether the game was successfully paused/unpaused
*/
UFUNCTION(BlueprintCallable, Category="Game", meta=(WorldContext="WorldContextObject") )
static bool SetGamePaused(const UObject* WorldContextObject, bool bPaused);
/**
* Returns the game's paused state
* @return Whether the game is currently paused or not
*/
UFUNCTION(BlueprintPure, Category="Game", meta=(WorldContext="WorldContextObject") )
static bool IsGamePaused(const UObject* WorldContextObject);
/**
* Enables split screen
* @param bDisable Whether the viewport should split screen between local players or not
*/
UFUNCTION(BlueprintCallable, Category = "Viewport", meta = (WorldContext = "WorldContextObject"))
static void SetForceDisableSplitscreen(const UObject* WorldContextObject, bool bDisable);
/**
* Returns the split screen state
* @return Whether the game viewport is split screen or not
*/
UFUNCTION(BlueprintPure, Category = "Viewport", meta = (WorldContext = "WorldContextObject"))
static bool IsSplitscreenForceDisabled(const UObject* WorldContextObject);
/**
* Enabled rendering of the world
* @param bEnable Whether the world should be rendered or not
*/
UFUNCTION(BlueprintCallable, Category = "Rendering", meta = (WorldContext = "WorldContextObject"))
static void SetEnableWorldRendering(const UObject* WorldContextObject, bool bEnable);
/**
* Returns the world rendering state
* @return Whether the world should be rendered or not
*/
UFUNCTION(BlueprintCallable, Category = "Rendering", meta = (WorldContext = "WorldContextObject"))
static bool GetEnableWorldRendering(const UObject* WorldContextObject);
/**
* Returns the current viewport mouse capture mode
*/
UFUNCTION(BlueprintPure, Category = "Utilities", meta = (WorldContext = "WorldContextObject"))
static EMouseCaptureMode GetViewportMouseCaptureMode(const UObject* WorldContextObject);
/**
* Sets the current viewport mouse capture mode
*/
UFUNCTION(BlueprintCallable, Category = "Utilities", meta = (WorldContext = "WorldContextObject"))
static void SetViewportMouseCaptureMode(const UObject* WorldContextObject, const EMouseCaptureMode MouseCaptureMode);
/** Hurt locally authoritative actors within the radius. Will only hit components that block the Visibility channel.
* @param BaseDamage - The base damage to apply, i.e. the damage at the origin.
* @param Origin - Epicenter of the damage area.
* @param DamageRadius - Radius of the damage area, from Origin
* @param DamageTypeClass - Class that describes the damage that was done.
* @param IgnoreActors - List of Actors to ignore
* @param DamageCauser - Actor that actually caused the damage (e.g. the grenade that exploded). This actor will not be damaged and it will not block damage.
* @param InstigatedByController - Controller that was responsible for causing this damage (e.g. player who threw the grenade)
* @param bFullDamage - if true, damage not scaled based on distance from Origin
* @param DamagePreventionChannel - Damage will not be applied to victim if there is something between the origin and the victim which blocks traces on this channel
* @return true if damage was applied to at least one actor.
*/
UFUNCTION(BlueprintCallable, BlueprintAuthorityOnly, Category="Game|Damage", meta=(WorldContext="WorldContextObject", AutoCreateRefTerm="IgnoreActors"))
static bool ApplyRadialDamage(const UObject* WorldContextObject, float BaseDamage, const FVector& Origin, float DamageRadius, TSubclassOf<class UDamageType> DamageTypeClass, const TArray<AActor*>& IgnoreActors, AActor* DamageCauser = NULL, AController* InstigatedByController = NULL, bool bDoFullDamage = false, ECollisionChannel DamagePreventionChannel = ECC_Visibility);
/** Hurt locally authoritative actors within the radius. Will only hit components that block the Visibility channel.
* @param BaseDamage - The base damage to apply, i.e. the damage at the origin.
* @param Origin - Epicenter of the damage area.
* @param DamageInnerRadius - Radius of the full damage area, from Origin
* @param DamageOuterRadius - Radius of the minimum damage area, from Origin
* @param DamageFalloff - Falloff exponent of damage from DamageInnerRadius to DamageOuterRadius
* @param DamageTypeClass - Class that describes the damage that was done.
* @param IgnoreActors - List of Actors to ignore
* @param DamageCauser - Actor that actually caused the damage (e.g. the grenade that exploded)
* @param InstigatedByController - Controller that was responsible for causing this damage (e.g. player who threw the grenade)
* @param bFullDamage - if true, damage not scaled based on distance from Origin
* @param DamagePreventionChannel - Damage will not be applied to victim if there is something between the origin and the victim which blocks traces on this channel
* @return true if damage was applied to at least one actor.
*/
UFUNCTION(BlueprintCallable, BlueprintAuthorityOnly, Category="Game|Damage", meta=(WorldContext="WorldContextObject", AutoCreateRefTerm="IgnoreActors"))
static bool ApplyRadialDamageWithFalloff(const UObject* WorldContextObject, float BaseDamage, float MinimumDamage, const FVector& Origin, float DamageInnerRadius, float DamageOuterRadius, float DamageFalloff, TSubclassOf<class UDamageType> DamageTypeClass, const TArray<AActor*>& IgnoreActors, AActor* DamageCauser = NULL, AController* InstigatedByController = NULL, ECollisionChannel DamagePreventionChannel = ECC_Visibility);
/** Hurts the specified actor with the specified impact.
* @param DamagedActor - Actor that will be damaged.
* @param BaseDamage - The base damage to apply.
* @param HitFromDirection - Direction the hit came FROM
* @param HitInfo - Collision or trace result that describes the hit
* @param EventInstigator - Controller that was responsible for causing this damage (e.g. player who shot the weapon)
* @param DamageCauser - Actor that actually caused the damage (e.g. the grenade that exploded)
* @param DamageTypeClass - Class that describes the damage that was done.
* @return Actual damage the ended up being applied to the actor.
*/
UFUNCTION(BlueprintCallable, BlueprintAuthorityOnly, Category="Game|Damage")
static float ApplyPointDamage(AActor* DamagedActor, float BaseDamage, const FVector& HitFromDirection, const FHitResult& HitInfo, AController* EventInstigator, AActor* DamageCauser, TSubclassOf<class UDamageType> DamageTypeClass);
/** Hurts the specified actor with generic damage.
* @param DamagedActor - Actor that will be damaged.
* @param BaseDamage - The base damage to apply.
* @param EventInstigator - Controller that was responsible for causing this damage (e.g. player who shot the weapon)
* @param DamageCauser - Actor that actually caused the damage (e.g. the grenade that exploded)
* @param DamageTypeClass - Class that describes the damage that was done.
* @return Actual damage the ended up being applied to the actor.
*/
UFUNCTION(BlueprintCallable, BlueprintAuthorityOnly, Category="Game|Damage")
static float ApplyDamage(AActor* DamagedActor, float BaseDamage, AController* EventInstigator, AActor* DamageCauser, TSubclassOf<class UDamageType> DamageTypeClass);
// --- Camera functions ------------------------------
/** Plays an in-world camera shake that affects all nearby local players, with distance-based attenuation. Does not replicate.
* @param WorldContextObject - Object that we can obtain a world context from
* @param Shake - Camera shake asset to use
* @param Epicenter - location to place the effect in world space
* @param InnerRadius - Cameras inside this radius are ignored
* @param OuterRadius - Cameras outside of InnerRadius and inside this are effected
* @param Falloff - Affects falloff of effect as it nears OuterRadius
* @param bOrientShakeTowardsEpicenter - Changes the rotation of shake to point towards epicenter instead of forward
*/
UFUNCTION(BlueprintCallable, Category="Game|Feedback", meta=(WorldContext="WorldContextObject", UnsafeDuringActorConstruction = "true"))
static void PlayWorldCameraShake(const UObject* WorldContextObject, TSubclassOf<class UCameraShakeBase> Shake, FVector Epicenter, float InnerRadius, float OuterRadius, float Falloff = 1.f, bool bOrientShakeTowardsEpicenter = false);
// --- Particle functions ------------------------------
/** Plays the specified effect at the given location and rotation, fire and forget. The system will go away when the effect is complete. Does not replicate.
* @param WorldContextObject - Object that we can obtain a world context from
* @param EmitterTemplate - particle system to create
* @param Location - location to place the effect in world space
* @param Rotation - rotation to place the effect in world space
* @param Scale - scale to create the effect at
* @param bAutoDestroy - Whether the component will automatically be destroyed when the particle system completes playing or whether it can be reactivated
* @param PoolingMethod - Method used for pooling this component. Defaults to none.
* @param bAutoActivate - Whether the component will be automatically activated on creation.
*/
UFUNCTION(BlueprintCallable, Category="Effects|Components|ParticleSystem", meta=(Keywords = "particle system", WorldContext="WorldContextObject", UnsafeDuringActorConstruction = "true"))
static UParticleSystemComponent* SpawnEmitterAtLocation(const UObject* WorldContextObject, UParticleSystem* EmitterTemplate, FVector Location, FRotator Rotation = FRotator::ZeroRotator, FVector Scale = FVector(1.f), bool bAutoDestroy = true, EPSCPoolMethod PoolingMethod = EPSCPoolMethod::None, bool bAutoActivateSystem = true);
// Backwards compatible version of SpawnEmitterAttached for C++ without Scale
static UParticleSystemComponent* SpawnEmitterAtLocation(const UObject* WorldContextObject, UParticleSystem* EmitterTemplate, FVector Location, FRotator Rotation, bool bAutoDestroy, EPSCPoolMethod PoolingMethod = EPSCPoolMethod::None, bool bAutoActivateSystem =true);
/** Plays the specified effect at the given location and rotation, fire and forget. The system will go away when the effect is complete. Does not replicate.
* @param World - The World to spawn in
* @param EmitterTemplate - particle system to create
* @param SpawnTransform - transform with which to place the effect in world space
* @param bAutoDestroy - Whether the component will automatically be destroyed when the particle system completes playing or whether it can be reactivated
* @param PoolingMethod - Method used for pooling this component. Defaults to none.
* @param bAutoActivate - Whether the component will be automatically activated on creation.
*/
static UParticleSystemComponent* SpawnEmitterAtLocation(UWorld* World, UParticleSystem* EmitterTemplate, const FTransform& SpawnTransform, bool bAutoDestroy = true, EPSCPoolMethod PoolingMethod = EPSCPoolMethod::None, bool bAutoActivate = true);
private:
static UParticleSystemComponent* InternalSpawnEmitterAtLocation(UWorld* World, UParticleSystem* EmitterTemplate, FVector Location, FRotator Rotation, FVector Scale, bool bAutoDestroy, EPSCPoolMethod PoolingMethod = EPSCPoolMethod::None, bool bAutoActivate = true);
public:
/** Plays the specified effect attached to and following the specified component. The system will go away when the effect is complete. Does not replicate.
* @param EmitterTemplate - particle system to create
* @param AttachComponent - Component to attach to.
* @param AttachPointName - Optional named point within the AttachComponent to spawn the emitter at
* @param Location - Depending on the value of LocationType this is either a relative offset from the attach component/point or an absolute world location that will be translated to a relative offset (if LocationType is KeepWorldPosition).
* @param Rotation - Depending on the value of LocationType this is either a relative offset from the attach component/point or an absolute world rotation that will be translated to a relative offset (if LocationType is KeepWorldPosition).
* @param Scale - Depending on the value of LocationType this is either a relative scale from the attach component or an absolute world scale that will be translated to a relative scale (if LocationType is KeepWorldPosition).
* @param LocationType - Specifies whether Location is a relative offset or an absolute world position
* @param bAutoDestroy - Whether the component will automatically be destroyed when the particle system completes playing or whether it can be reactivated
* @param PoolingMethod - Method used for pooling this component. Defaults to none.
* @param bAutoActivate - Whether the component will be automatically activated on creation.
*/
UFUNCTION(BlueprintCallable, Category="Effects|Components|ParticleSystem", meta=(Keywords = "particle system", UnsafeDuringActorConstruction = "true"))
static UParticleSystemComponent* SpawnEmitterAttached(class UParticleSystem* EmitterTemplate, class USceneComponent* AttachToComponent, FName AttachPointName = NAME_None, FVector Location = FVector(ForceInit), FRotator Rotation = FRotator::ZeroRotator, FVector Scale = FVector(1.f), EAttachLocation::Type LocationType = EAttachLocation::KeepRelativeOffset, bool bAutoDestroy = true, EPSCPoolMethod PoolingMethod = EPSCPoolMethod::None, bool bAutoActivate=true);
// Backwards compatible version of SpawnEmitterAttached for C++ without Scale
static UParticleSystemComponent* SpawnEmitterAttached(class UParticleSystem* EmitterTemplate, class USceneComponent* AttachToComponent, FName AttachPointName, FVector Location, FRotator Rotation, EAttachLocation::Type LocationType, bool bAutoDestroy = true, EPSCPoolMethod PoolingMethod = EPSCPoolMethod::None, bool bAutoActivate=true);
// --- Sound functions ------------------------------
/**
* Determines if any audio listeners are within range of the specified location
* @param Location The location to potentially play a sound at
* @param MaximumRange The maximum distance away from Location that a listener can be
* @note This will always return false if there is no audio device, or the audio device is disabled.
*/
UFUNCTION(BlueprintCallable, Category = "Audio", meta = (WorldContext = "WorldContextObject"))
static bool AreAnyListenersWithinRange(const UObject* WorldContextObject, const FVector& Location, float MaximumRange);
/**
* Finds and returns the position of the closest listener to the specified location
* @param Location The location from which we'd like to find the closest listener, in world space.
* @param MaximumRange The maximum distance away from Location that a listener can be.
* @param bAllowAttenuationOverride True for the adjusted listener position (if attenuation override is set), false for the raw listener position (for panning)
* @param ListenerPosition [Out] The position of the closest listener in world space, if found.
* @return true if we've successfully found a listener within MaximumRange of Location, otherwise false.
* @note This will always return false if there is no audio device, or the audio device is disabled.
*/
UFUNCTION(BlueprintCallable, Category = "Audio", meta = (WorldContext = "WorldContextObject"))
static bool GetClosestListenerLocation(const UObject* WorldContextObject, const FVector& Location, float MaximumRange, const bool bAllowAttenuationOverride, FVector& ListenerPosition);
/**
* Sets a global pitch modulation scalar that will apply to all non-UI sounds
*
* * Fire and Forget.
* * Not Replicated.
* @param PitchModulation - A pitch modulation value to globally set.
* @param TimeSec - A time value to linearly interpolate the global modulation pitch over from it's current value.
*/
UFUNCTION(BlueprintCallable, BlueprintCosmetic, Category = "Audio", meta = (WorldContext = "WorldContextObject"))
static void SetGlobalPitchModulation(const UObject* WorldContextObject, float PitchModulation, float TimeSec);
/**
* Sets attenuation distance scale value on the sound class over the given amount of time from it's current attenuation distance override value (1.0f it not overridden).
* Attenuation scale allows scaling the attenuation distance used for computing distance attenuation.
*
* * Fire and Forget.
* * Not Replicated.
* @param SoundClass - Sound class to to use to set the attenuation distance scale on.
* @param DistanceAttenuationScale - A distance attenuation scale value.
* @param TimeSec - A time value to linearly interpolate from the current distance attenuation scale value to the new value.
*/
UFUNCTION(BlueprintCallable, BlueprintCosmetic, Category = "Audio", meta = (WorldContext = "WorldContextObject"))
static void SetSoundClassDistanceScale(const UObject* WorldContextObject, USoundClass* SoundClass, float DistanceAttenuationScale, float TimeSec = 0.0f);
/**
* Sets the global listener focus parameters which will scale focus behavior of sounds based on their focus azimuth settings in their attenuation settings.
*
* * Fire and Forget.
* * Not Replicated.
* @param FocusAzimuthScale - An angle scale value used to scale the azimuth angle that defines where sounds are in-focus.
* @param NonFocusAzimuthScale- An angle scale value used to scale the azimuth angle that defines where sounds are out-of-focus.
* @param FocusDistanceScale - A distance scale value to use for sounds which are in-focus. Values < 1.0 will reduce perceived distance to sounds, values > 1.0 will increase perceived distance to in-focus sounds.
* @param NonFocusDistanceScale - A distance scale value to use for sounds which are out-of-focus. Values < 1.0 will reduce perceived distance to sounds, values > 1.0 will increase perceived distance to in-focus sounds.
* @param FocusVolumeScale- A volume attenuation value to use for sounds which are in-focus.
* @param NonFocusVolumeScale- A volume attenuation value to use for sounds which are out-of-focus.
* @param FocusPriorityScale - A priority scale value (> 0.0) to use for sounds which are in-focus. Values < 1.0 will reduce the priority of in-focus sounds, values > 1.0 will increase the priority of in-focus sounds.
* @param NonFocusPriorityScale - A priority scale value (> 0.0) to use for sounds which are out-of-focus. Values < 1.0 will reduce the priority of sounds out-of-focus sounds, values > 1.0 will increase the priority of out-of-focus sounds.
*/
UFUNCTION(BlueprintCallable, BlueprintCosmetic, Category = "Audio", meta = (WorldContext = "WorldContextObject"))
static void SetGlobalListenerFocusParameters(const UObject* WorldContextObject, float FocusAzimuthScale = 1.0f, float NonFocusAzimuthScale = 1.0f, float FocusDistanceScale = 1.0f, float NonFocusDistanceScale = 1.0f, float FocusVolumeScale = 1.0f, float NonFocusVolumeScale = 1.0f, float FocusPriorityScale = 1.0f, float NonFocusPriorityScale = 1.0f);
/**
* Plays a sound directly with no attenuation, perfect for UI sounds.
*
* * Fire and Forget.
* * Not Replicated.
* @param Sound - Sound to play.
* @param VolumeMultiplier - Multiplied with the volume to make the sound louder or softer.
* @param PitchMultiplier - Multiplies the pitch.
* @param ConcurrencySettings - Override concurrency settings package to play sound with
* @param StartTime - How far in to the sound to begin playback at
* @param ConcurrencySettings - Override concurrency settings package to play sound with
* @param OwningActor - The actor to use as the "owner" for concurrency settings purposes. Allows PlaySound calls to do a concurrency limit per owner.
* @param bIsUISound - True if sound is UI related, else false
*/
UFUNCTION(BlueprintCallable, BlueprintCosmetic, Category="Audio", meta=( WorldContext="WorldContextObject", AdvancedDisplay = "2", UnsafeDuringActorConstruction = "true" ))
static void PlaySound2D(const UObject* WorldContextObject, USoundBase* Sound, float VolumeMultiplier = 1.f, float PitchMultiplier = 1.f, float StartTime = 0.f, USoundConcurrency* ConcurrencySettings = nullptr, AActor* OwningActor = nullptr, bool bIsUISound = true);
/**
* Spawns a sound with no attenuation, perfect for UI sounds.
*
* * Not Replicated.
* @param Sound - Sound to play.
* @param VolumeMultiplier - Multiplied with the volume to make the sound louder or softer.
* @param PitchMultiplier - Multiplies the pitch.
* @param StartTime - How far in to the sound to begin playback at
* @param ConcurrencySettings - Override concurrency settings package to play sound with
* @param PersistAcrossLevelTransition - Whether the sound should continue to play when the map it was played in is unloaded
* @param bAutoDestroy - Whether the returned audio component will be automatically cleaned up when the sound finishes (by completing or stopping) or whether it can be reactivated
* @return An audio component to manipulate the spawned sound
*/
UFUNCTION(BlueprintCallable, BlueprintCosmetic, Category="Audio", meta=( WorldContext="WorldContextObject", AdvancedDisplay = "2", UnsafeDuringActorConstruction = "true", Keywords = "play" ))
static UAudioComponent* SpawnSound2D(const UObject* WorldContextObject, USoundBase* Sound, float VolumeMultiplier = 1.f, float PitchMultiplier = 1.f, float StartTime = 0.f, USoundConcurrency* ConcurrencySettings = nullptr, bool bPersistAcrossLevelTransition = false, bool bAutoDestroy = true);
/**
* Creates a sound with no attenuation, perfect for UI sounds. This does NOT play the sound
*
* * Not Replicated.
* @param Sound - Sound to create.
* @param VolumeMultiplier - Multiplied with the volume to make the sound louder or softer.
* @param PitchMultiplier - Multiplies the pitch.
* @param StartTime - How far in to the sound to begin playback at
* @param ConcurrencySettings - Override concurrency settings package to play sound with
* @param PersistAcrossLevelTransition - Whether the sound should continue to play when the map it was played in is unloaded
* @param bAutoDestroy - Whether the returned audio component will be automatically cleaned up when the sound finishes (by completing or stopping) or whether it can be reactivated
* @return An audio component to manipulate the created sound
*/
UFUNCTION(BlueprintCallable, BlueprintCosmetic, Category="Audio", meta=( WorldContext="WorldContextObject", AdvancedDisplay = "2", UnsafeDuringActorConstruction = "true", Keywords = "play" ))
static UAudioComponent* CreateSound2D(const UObject* WorldContextObject, USoundBase* Sound, float VolumeMultiplier = 1.f, float PitchMultiplier = 1.f, float StartTime = 0.f, USoundConcurrency* ConcurrencySettings = nullptr, bool bPersistAcrossLevelTransition = false, bool bAutoDestroy = true);
/**
* Plays a sound at the given location. This is a fire and forget sound and does not travel with any actor. Replication is also not handled at this point.
* @param Sound - sound to play
* @param Location - World position to play sound at
* @param Rotation - World rotation to play sound at
* @param VolumeMultiplier - Volume multiplier
* @param PitchMultiplier - PitchMultiplier
* @param StartTime - How far in to the sound to begin playback at
* @param AttenuationSettings - Override attenuation settings package to play sound with
* @param ConcurrencySettings - Override concurrency settings package to play sound with
* @param OwningActor - The actor to use as the "owner" for concurrency settings purposes. Allows PlaySound calls to do a concurrency limit per owner.
*/
UFUNCTION(BlueprintCallable, Category="Audio", meta=(WorldContext="WorldContextObject", AdvancedDisplay = "3", UnsafeDuringActorConstruction = "true", Keywords = "play"))
static void PlaySoundAtLocation(const UObject* WorldContextObject, USoundBase* Sound, FVector Location, FRotator Rotation, float VolumeMultiplier = 1.f, float PitchMultiplier = 1.f, float StartTime = 0.f, class USoundAttenuation* AttenuationSettings = nullptr, USoundConcurrency* ConcurrencySettings = nullptr, AActor* OwningActor = nullptr);
static void PlaySoundAtLocation(const UObject* WorldContextObject, USoundBase* Sound, FVector Location, float VolumeMultiplier = 1.f, float PitchMultiplier = 1.f, float StartTime = 0.f, class USoundAttenuation* AttenuationSettings = nullptr, USoundConcurrency* ConcurrencySettings = nullptr)
{
PlaySoundAtLocation(WorldContextObject, Sound, Location, FRotator::ZeroRotator, VolumeMultiplier, PitchMultiplier, StartTime, AttenuationSettings, ConcurrencySettings);
}
/**
* Spawns a sound at the given location. This does not travel with any actor. Replication is also not handled at this point.
* @param Sound - sound to play
* @param Location - World position to play sound at
* @param Rotation - World rotation to play sound at
* @param VolumeMultiplier - Volume multiplier
* @param PitchMultiplier - PitchMultiplier
* @param StartTime - How far in to the sound to begin playback at
* @param AttenuationSettings - Override attenuation settings package to play sound with
* @param ConcurrencySettings - Override concurrency settings package to play sound with
* @param bAutoDestroy - Whether the returned audio component will be automatically cleaned up when the sound finishes (by completing or stopping) or whether it can be reactivated
* @return An audio component to manipulate the spawned sound
*/
UFUNCTION(BlueprintCallable, Category="Audio", meta=(WorldContext="WorldContextObject", AdvancedDisplay = "3", UnsafeDuringActorConstruction = "true", Keywords = "play"))
static UAudioComponent* SpawnSoundAtLocation(const UObject* WorldContextObject, USoundBase* Sound, FVector Location, FRotator Rotation = FRotator::ZeroRotator, float VolumeMultiplier = 1.f, float PitchMultiplier = 1.f, float StartTime = 0.f, class USoundAttenuation* AttenuationSettings = nullptr, USoundConcurrency* ConcurrencySettings = nullptr, bool bAutoDestroy = true);
/** Plays a sound attached to and following the specified component. This is a fire and forget sound. Replication is also not handled at this point.
* @param Sound - sound to play
* @param AttachComponent - Component to attach to.
* @param AttachPointName - Optional named point within the AttachComponent to play the sound at
* @param Location - Depending on the value of Location Type this is either a relative offset from the attach component/point or an absolute world position that will be translated to a relative offset
* @param Rotation - Depending on the value of Location Type this is either a relative offset from the attach component/point or an absolute world rotation that will be translated to a relative offset
* @param LocationType - Specifies whether Location is a relative offset or an absolute world position
* @param bStopWhenAttachedToDestroyed - Specifies whether the sound should stop playing when the owner of the attach to component is destroyed.
* @param VolumeMultiplier - Volume multiplier
* @param PitchMultiplier - PitchMultiplier
* @param StartTime - How far in to the sound to begin playback at
* @param AttenuationSettings - Override attenuation settings package to play sound with
* @param ConcurrencySettings - Override concurrency settings package to play sound with
* @param bAutoDestroy - Whether the returned audio component will be automatically cleaned up when the sound finishes (by completing or stopping) or whether it can be reactivated
* @return An audio component to manipulate the spawned sound
*/
UFUNCTION(BlueprintCallable, Category="Audio", meta=(AdvancedDisplay = "2", UnsafeDuringActorConstruction = "true", Keywords = "play"))
static UAudioComponent* SpawnSoundAttached(USoundBase* Sound, USceneComponent* AttachToComponent, FName AttachPointName = NAME_None, FVector Location = FVector(ForceInit), FRotator Rotation = FRotator::ZeroRotator, EAttachLocation::Type LocationType = EAttachLocation::KeepRelativeOffset, bool bStopWhenAttachedToDestroyed = false, float VolumeMultiplier = 1.f, float PitchMultiplier = 1.f, float StartTime = 0.f, USoundAttenuation* AttenuationSettings = nullptr, USoundConcurrency* ConcurrencySettings = nullptr, bool bAutoDestroy = true);
static class UAudioComponent* SpawnSoundAttached(USoundBase* Sound, USceneComponent* AttachToComponent, FName AttachPointName, FVector Location, EAttachLocation::Type LocationType = EAttachLocation::KeepRelativeOffset, bool bStopWhenAttachedToDestroyed = false, float VolumeMultiplier = 1.f, float PitchMultiplier = 1.f, float StartTime = 0.f, USoundAttenuation* AttenuationSettings = nullptr, USoundConcurrency* ConcurrencySettings = nullptr, bool bAutoDestroy = true)
{
return SpawnSoundAttached(Sound, AttachToComponent, AttachPointName, Location, FRotator::ZeroRotator, LocationType, bStopWhenAttachedToDestroyed, VolumeMultiplier, PitchMultiplier, StartTime, AttenuationSettings, ConcurrencySettings, bAutoDestroy);
}
/**
* Plays a dialogue directly with no attenuation, perfect for UI.
*
* * Fire and Forget.
* * Not Replicated.
* @param Dialogue - dialogue to play
* @param Context - context the dialogue is to play in
* @param VolumeMultiplier - Multiplied with the volume to make the sound louder or softer.
* @param PitchMultiplier - Multiplies the pitch.
* @param StartTime - How far in to the dialogue to begin playback at
*/
UFUNCTION(BlueprintCallable, BlueprintCosmetic, Category="Audio", meta=( WorldContext="WorldContextObject", AdvancedDisplay = "3", UnsafeDuringActorConstruction = "true" ))
static void PlayDialogue2D(const UObject* WorldContextObject, UDialogueWave* Dialogue, const struct FDialogueContext& Context, float VolumeMultiplier = 1.f, float PitchMultiplier = 1.f, float StartTime = 0.f);
/**
* Spawns a dialogue with no attenuation, perfect for UI.
*
* * Not Replicated.
* @param Dialogue - dialogue to play
* @param Context - context the dialogue is to play in
* @param VolumeMultiplier - Multiplied with the volume to make the sound louder or softer.
* @param PitchMultiplier - Multiplies the pitch.
* @param StartTime - How far in to the dialogue to begin playback at
* @param bAutoDestroy - Whether the returned audio component will be automatically cleaned up when the sound finishes (by completing or stopping) or whether it can be reactivated
* @return An audio component to manipulate the spawned sound
*/
UFUNCTION(BlueprintCallable, BlueprintCosmetic, Category="Audio", meta=( WorldContext="WorldContextObject", AdvancedDisplay = "3", UnsafeDuringActorConstruction = "true", Keywords = "play" ))
static UAudioComponent* SpawnDialogue2D(const UObject* WorldContextObject, UDialogueWave* Dialogue, const struct FDialogueContext& Context, float VolumeMultiplier = 1.f, float PitchMultiplier = 1.f, float StartTime = 0.f, bool bAutoDestroy = true);
/** Plays a dialogue at the given location. This is a fire and forget sound and does not travel with any actor. Replication is also not handled at this point.
* @param Dialogue - dialogue to play
* @param Context - context the dialogue is to play in
* @param Location - World position to play dialogue at
* @param Rotation - World rotation to play dialogue at
* @param VolumeMultiplier - Volume multiplier
* @param PitchMultiplier - Pitch multiplier
* @param StartTime - How far in to the dialogue to begin playback at
* @param AttenuationSettings - Override attenuation settings package to play sound with
*/
UFUNCTION(BlueprintCallable, Category="Audio", meta=(WorldContext="WorldContextObject", AdvancedDisplay = "4", UnsafeDuringActorConstruction = "true"))
static void PlayDialogueAtLocation(const UObject* WorldContextObject, class UDialogueWave* Dialogue, const FDialogueContext& Context, FVector Location, FRotator Rotation, float VolumeMultiplier = 1.f, float PitchMultiplier = 1.f, float StartTime = 0.f, USoundAttenuation* AttenuationSettings = nullptr);
static void PlayDialogueAtLocation(const UObject* WorldContextObject, UDialogueWave* Dialogue, const FDialogueContext& Context, FVector Location, float VolumeMultiplier = 1.f, float PitchMultiplier = 1.f, float StartTime = 0.f, USoundAttenuation* AttenuationSettings = nullptr)
{
PlayDialogueAtLocation(WorldContextObject, Dialogue, Context, Location, FRotator::ZeroRotator, VolumeMultiplier, PitchMultiplier, StartTime, AttenuationSettings);
}
/** Plays a dialogue at the given location. This is a fire and forget sound and does not travel with any actor. Replication is also not handled at this point.
* @param Dialogue - dialogue to play
* @param Context - context the dialogue is to play in
* @param Location - World position to play dialogue at
* @param Rotation - World rotation to play dialogue at
* @param VolumeMultiplier - Volume multiplier
* @param PitchMultiplier - PitchMultiplier
* @param StartTime - How far in to the dialogue to begin playback at
* @param AttenuationSettings - Override attenuation settings package to play sound with
* @param bAutoDestroy - Whether the returned audio component will be automatically cleaned up when the sound finishes (by completing or stopping) or whether it can be reactivated
* @return Audio Component to manipulate the playing dialogue with
*/
UFUNCTION(BlueprintCallable, Category="Audio", meta=(WorldContext="WorldContextObject", AdvancedDisplay = "4", UnsafeDuringActorConstruction = "true", Keywords = "play"))
static UAudioComponent* SpawnDialogueAtLocation(const UObject* WorldContextObject, UDialogueWave* Dialogue, const struct FDialogueContext& Context, FVector Location, FRotator Rotation = FRotator::ZeroRotator, float VolumeMultiplier = 1.f, float PitchMultiplier = 1.f, float StartTime = 0.f, USoundAttenuation* AttenuationSettings = nullptr, bool bAutoDestroy = true);
/** Spawns a dialogue attached to and following the specified component. This is a fire and forget sound. Replication is also not handled at this point.
* @param Dialogue - dialogue to play
* @param Context - context the dialogue is to play in
* @param AttachComponent - Component to attach to.
* @param AttachPointName - Optional named point within the AttachComponent to play the sound at
* @param Location - Depending on the value of Location Type this is either a relative offset from the attach component/point or an absolute world position that will be translated to a relative offset
* @param Rotation - Depending on the value of Location Type this is either a relative offset from the attach component/point or an absolute world rotation that will be translated to a relative offset
* @param LocationType - Specifies whether Location is a relative offset or an absolute world position
* @param bStopWhenAttachedToDestroyed - Specifies whether the sound should stop playing when the owner of the attach to component is destroyed.
* @param VolumeMultiplier - Volume multiplier
* @param PitchMultiplier - PitchMultiplier
* @param StartTime - How far in to the dialogue to begin playback at
* @param AttenuationSettings - Override attenuation settings package to play sound with
* @param bAutoDestroy - Whether the returned audio component will be automatically cleaned up when the sound finishes (by completing or stopping) or whether it can be reactivated
* @return Audio Component to manipulate the playing dialogue with
*/
UFUNCTION(BlueprintCallable, Category="Audio", meta=(AdvancedDisplay = "2", UnsafeDuringActorConstruction = "true", Keywords = "play"))
static UAudioComponent* SpawnDialogueAttached(UDialogueWave* Dialogue, const FDialogueContext& Context, USceneComponent* AttachToComponent, FName AttachPointName = NAME_None, FVector Location = FVector(ForceInit), FRotator Rotation = FRotator::ZeroRotator, EAttachLocation::Type LocationType = EAttachLocation::KeepRelativeOffset, bool bStopWhenAttachedToDestroyed = false, float VolumeMultiplier = 1.f, float PitchMultiplier = 1.f, float StartTime = 0.f, USoundAttenuation* AttenuationSettings = nullptr, bool bAutoDestroy = true);
static UAudioComponent* SpawnDialogueAttached(UDialogueWave* Dialogue, const FDialogueContext& Context, USceneComponent* AttachToComponent, FName AttachPointName, FVector Location, EAttachLocation::Type LocationType = EAttachLocation::KeepRelativeOffset, bool bStopWhenAttachedToDestroyed = false, float VolumeMultiplier = 1.f, float PitchMultiplier = 1.f, float StartTime = 0.f, USoundAttenuation* AttenuationSettings = nullptr, bool bAutoDestroy = true)
{
return SpawnDialogueAttached(Dialogue, Context, AttachToComponent, AttachPointName, Location, FRotator::ZeroRotator, LocationType, bStopWhenAttachedToDestroyed, VolumeMultiplier, PitchMultiplier, StartTime, AttenuationSettings, bAutoDestroy);
}
/** Plays a force feedback effect at the given location. This is a fire and forget effect and does not travel with any actor. Replication is also not handled at this point.
* @param ForceFeedbackEffect - effect to play
* @param Location - World position to center the effect at
* @param Rotation - World rotation to center the effect at
* @param IntensityMultiplier - Intensity multiplier
* @param StartTime - How far in to the feedback effect to begin playback at
* @param AttenuationSettings - Override attenuation settings package to play effect with
* @param bAutoDestroy - Whether the returned force feedback component will be automatically cleaned up when the feedback patern finishes (by completing or stopping) or whether it can be reactivated
* @return Force Feedback Component to manipulate the playing feedback effect with
*/
UFUNCTION(BlueprintCallable, Category="ForceFeedback", meta=(WorldContext="WorldContextObject", AdvancedDisplay = "3", UnsafeDuringActorConstruction = "true", Keywords = "play"))
static UForceFeedbackComponent* SpawnForceFeedbackAtLocation(const UObject* WorldContextObject, UForceFeedbackEffect* ForceFeedbackEffect, FVector Location, FRotator Rotation = FRotator::ZeroRotator, bool bLooping = false, float IntensityMultiplier = 1.f, float StartTime = 0.f, UForceFeedbackAttenuation* AttenuationSettings = nullptr, bool bAutoDestroy = true);
/** Plays a force feedback effect attached to and following the specified component. This is a fire and forget effect. Replication is also not handled at this point.
* @param ForceFeedbackEffect - effect to play
* @param AttachComponent - Component to attach to.
* @param AttachPointName - Optional named point within the AttachComponent to attach to
* @param Location - Depending on the value of Location Type this is either a relative offset from the attach component/point or an absolute world position that will be translated to a relative offset
* @param Rotation - Depending on the value of Location Type this is either a relative offset from the attach component/point or an absolute world rotation that will be translated to a relative offset
* @param LocationType - Specifies whether Location is a relative offset or an absolute world position
* @param bStopWhenAttachedToDestroyed - Specifies whether the feedback effect should stop playing when the owner of the attach to component is destroyed.
* @param IntensityMultiplier - Intensity multiplier
* @param StartTime - How far in to the feedback effect to begin playback at
* @param AttenuationSettings - Override attenuation settings package to play effect with
* @param bAutoDestroy - Whether the returned force feedback component will be automatically cleaned up when the feedback patern finishes (by completing or stopping) or whether it can be reactivated
* @return Force Feedback Component to manipulate the playing feedback effect with
*/
UFUNCTION(BlueprintCallable, Category="ForceFeedback", meta=(AdvancedDisplay = "2", UnsafeDuringActorConstruction = "true", Keywords = "play"))
static UForceFeedbackComponent* SpawnForceFeedbackAttached(UForceFeedbackEffect* ForceFeedbackEffect, USceneComponent* AttachToComponent, FName AttachPointName = NAME_None, FVector Location = FVector(ForceInit), FRotator Rotation = FRotator::ZeroRotator, EAttachLocation::Type LocationType = EAttachLocation::KeepRelativeOffset, bool bStopWhenAttachedToDestroyed = false, bool bLooping = false, float IntensityMultiplier = 1.f, float StartTime = 0.f, class UForceFeedbackAttenuation* AttenuationSettings = nullptr, bool bAutoDestroy = true);
/**
* Will set subtitles to be enabled or disabled.
* @param bEnabled will enable subtitle drawing if true, disable if false.
*/
UFUNCTION(BlueprintCallable, Category = "Audio|Subtitles")
static void SetSubtitlesEnabled(bool bEnabled);
/**
* Returns whether or not subtitles are currently enabled.
* @return true if subtitles are enabled.
*/
UFUNCTION(BlueprintPure, Category = "Audio|Subtitles")
static bool AreSubtitlesEnabled();
// --- Audio Functions ----------------------------
/** Set the sound mix of the audio system for special EQing **/
UFUNCTION(BlueprintCallable, Category="Audio", meta=(WorldContext = "WorldContextObject"))
static void SetBaseSoundMix(const UObject* WorldContextObject, class USoundMix* InSoundMix);
/** Primes the sound, caching the first chunk of streamed audio. **/
UFUNCTION(BlueprintCallable, Category = "Audio")
static void PrimeSound(USoundBase* InSound);
/** Overrides the sound class adjuster in the given sound mix. If the sound class does not exist in the input sound mix, the sound class adjustment will be added to the sound mix.
* @param InSoundMixModifier The sound mix to modify.
* @param InSoundClass The sound class to override (or add) in the sound mix.
* @param Volume The volume scale to set the sound class adjuster to.
* @param Pitch The pitch scale to set the sound class adjuster to.
* @param FadeInTime The interpolation time to use to go from the current sound class adjuster values to the new values.
* @param bApplyToChildren Whether or not to apply this override to the sound class' children or to just the specified sound class.
*/
UFUNCTION(BlueprintCallable, Category = "Audio", meta = (WorldContext = "WorldContextObject"))
static void SetSoundMixClassOverride(const UObject* WorldContextObject, class USoundMix* InSoundMixModifier, class USoundClass* InSoundClass, float Volume = 1.0f, float Pitch = 1.0f, float FadeInTime = 1.0f, bool bApplyToChildren = true);
/** Clears the override of the sound class adjuster in the given sound mix. If the override did not exist in the sound mix, this will do nothing.
* @param InSoundMixModifier The sound mix to modify.
* @param InSoundClass The sound class to override (or add) in the sound mix.
* @param FadeOutTime The interpolation time to use to go from the current sound class adjuster override values to the non-override values.
*/
UFUNCTION(BlueprintCallable, Category = "Audio", meta = (WorldContext = "WorldContextObject"))
static void ClearSoundMixClassOverride(const UObject* WorldContextObject, class USoundMix* InSoundMixModifier, class USoundClass* InSoundClass, float FadeOutTime = 1.0f);
/** Push a sound mix modifier onto the audio system **/
UFUNCTION(BlueprintCallable, Category="Audio", meta=(WorldContext = "WorldContextObject"))
static void PushSoundMixModifier(const UObject* WorldContextObject, class USoundMix* InSoundMixModifier);
/** Pop a sound mix modifier from the audio system **/
UFUNCTION(BlueprintCallable, Category="Audio", meta=(WorldContext = "WorldContextObject"))
static void PopSoundMixModifier(const UObject* WorldContextObject, class USoundMix* InSoundMixModifier);
/** Clear all sound mix modifiers from the audio system **/
UFUNCTION(BlueprintCallable, Category="Audio", meta=(WorldContext = "WorldContextObject"))
static void ClearSoundMixModifiers(const UObject* WorldContextObject);
/** Activates a Reverb Effect without the need for a volume
* @param ReverbEffect Reverb Effect to use
* @param TagName Tag to associate with Reverb Effect
* @param Priority Priority of the Reverb Effect
* @param Volume Volume level of Reverb Effect
* @param FadeTime Time before Reverb Effect is fully active
*/
UFUNCTION(BlueprintCallable, Category="Audio", meta=(WorldContext = "WorldContextObject", AdvancedDisplay = "2"))
static void ActivateReverbEffect(const UObject* WorldContextObject, class UReverbEffect* ReverbEffect, FName TagName, float Priority = 0.f, float Volume = 0.5f, float FadeTime = 2.f);
/**
* Deactivates a Reverb Effect not applied by a volume
*
* @param TagName Tag associated with Reverb Effect to remove
*/
UFUNCTION(BlueprintCallable, Category="Audio", meta=(WorldContext = "WorldContextObject"))
static void DeactivateReverbEffect(const UObject* WorldContextObject, FName TagName);
/**
* Returns the highest priority reverb settings currently active from any source (volumes or manual setting).
*/
UFUNCTION(BlueprintCallable, Category = "Audio", meta = (WorldContext = "WorldContextObject"))
static class UReverbEffect* GetCurrentReverbEffect(const UObject* WorldContextObject);
/**
* Sets the max number of voices (also known as "channels") dynamically by percentage. E.g. if you want to temporarily reduce voice count by 50%, use 0.50. Later, you can return to the original max voice count by using 1.0.
*/
UFUNCTION(BlueprintCallable, Category = "Audio", meta = (WorldContext = "WorldContextObject"))
static void SetMaxAudioChannelsScaled(const UObject* WorldContextObject, float MaxChannelCountScale);
/**
* Retrieves the max voice count currently used by the audio engine.
*/
UFUNCTION(BlueprintCallable, Category = "Audio", meta = (WorldContext = "WorldContextObject"))
static int32 GetMaxAudioChannelCount(const UObject* WorldContextObject);
// --- Decal functions ------------------------------
/** Spawns a decal at the given location and rotation, fire and forget. Does not replicate.
* @param DecalMaterial - decal's material
* @param DecalSize - size of decal
* @param Location - location to place the decal in world space
* @param Rotation - rotation to place the decal in world space
* @param LifeSpan - destroy decal component after time runs out (0 = infinite)
*/
UFUNCTION(BlueprintCallable, Category="Rendering|Components|Decal", meta=(WorldContext="WorldContextObject", UnsafeDuringActorConstruction = "true"))
static UDecalComponent* SpawnDecalAtLocation(const UObject* WorldContextObject, class UMaterialInterface* DecalMaterial, FVector DecalSize, FVector Location, FRotator Rotation = FRotator(-90, 0, 0), float LifeSpan = 0);
/** Spawns a decal attached to and following the specified component. Does not replicate.
* @param DecalMaterial - decal's material
* @param DecalSize - size of decal
* @param AttachComponent - Component to attach to.
* @param AttachPointName - Optional named point within the AttachComponent to spawn the emitter at
* @param Location - Depending on the value of Location Type this is either a relative offset from the attach component/point or an absolute world position that will be translated to a relative offset
* @param Rotation - Depending on the value of LocationType this is either a relative offset from the attach component/point or an absolute world rotation that will be translated to a realative offset
* @param LocationType - Specifies whether Location is a relative offset or an absolute world position
* @param LifeSpan - destroy decal component after time runs out (0 = infinite)
*/
UFUNCTION(BlueprintCallable, Category="Rendering|Components|Decal", meta=(UnsafeDuringActorConstruction = "true"))
static UDecalComponent* SpawnDecalAttached(class UMaterialInterface* DecalMaterial, FVector DecalSize, class USceneComponent* AttachToComponent, FName AttachPointName = NAME_None, FVector Location = FVector(ForceInit), FRotator Rotation = FRotator::ZeroRotator, EAttachLocation::Type LocationType = EAttachLocation::KeepRelativeOffset, float LifeSpan = 0);
/** Extracts data from a HitResult.
* @param Hit The source HitResult.
* @param bBlockingHit True if there was a blocking hit, false otherwise.
* @param bInitialOverlap True if the hit started in an initial overlap. In this case some other values should be interpreted differently. Time will be 0, ImpactPoint will equal Location, and normals will be equal and indicate a depenetration vector.
* @param Time 'Time' of impact along trace direction ranging from [0.0 to 1.0) if there is a hit, indicating time between start and end. Equals 1.0 if there is no hit.
* @param Distance The distance from the TraceStart to the Location in world space. This value is 0 if there was an initial overlap (trace started inside another colliding object).
* @param Location Location of the hit in world space. If this was a swept shape test, this is the location where we can place the shape in the world where it will not penetrate.
* @param Normal Normal of the hit in world space, for the object that was swept (e.g. for a sphere trace this points towards the sphere's center). Equal to ImpactNormal for line tests.
* @param ImpactPoint Location of the actual contact point of the trace shape with the surface of the hit object. Equal to Location in the case of an initial overlap.
* @param ImpactNormal Normal of the hit in world space, for the object that was hit by the sweep.
* @param PhysMat Physical material that was hit. Must set bReturnPhysicalMaterial to true in the query params for this to be returned.
* @param HitActor Actor hit by the trace.
* @param HitComponent PrimitiveComponent hit by the trace.
* @param HitBoneName Name of the bone hit (valid only if we hit a skeletal mesh).
* @param HitItem Primitive-specific data recording which item in the primitive was hit
* @param FaceIndex If colliding with trimesh or landscape, index of face that was hit.
*/
UFUNCTION(BlueprintPure, Category = "Collision", meta=(NativeBreakFunc, AdvancedDisplay="3"))
static void BreakHitResult(const struct FHitResult& Hit, bool& bBlockingHit, bool& bInitialOverlap, float& Time, float& Distance, FVector& Location, FVector& ImpactPoint, FVector& Normal, FVector& ImpactNormal, class UPhysicalMaterial*& PhysMat, class AActor*& HitActor, class UPrimitiveComponent*& HitComponent, FName& HitBoneName, int32& HitItem, int32& FaceIndex, FVector& TraceStart, FVector& TraceEnd);
/**
* Create a HitResult struct
* @param Hit The source HitResult.
* @param bBlockingHit True if there was a blocking hit, false otherwise.
* @param bInitialOverlap True if the hit started in an initial overlap. In this case some other values should be interpreted differently. Time will be 0, ImpactPoint will equal Location, and normals will be equal and indicate a depenetration vector.
* @param Time 'Time' of impact along trace direction ranging from [0.0 to 1.0) if there is a hit, indicating time between start and end. Equals 1.0 if there is no hit.
* @param Distance The distance from the TraceStart to the Location in world space. This value is 0 if there was an initial overlap (trace started inside another colliding object).
* @param Location Location of the hit in world space. If this was a swept shape test, this is the location where we can place the shape in the world where it will not penetrate.
* @param Normal Normal of the hit in world space, for the object that was swept (e.g. for a sphere trace this points towards the sphere's center). Equal to ImpactNormal for line tests.
* @param ImpactPoint Location of the actual contact point of the trace shape with the surface of the hit object. Equal to Location in the case of an initial overlap.
* @param ImpactNormal Normal of the hit in world space, for the object that was hit by the sweep.
* @param PhysMat Physical material that was hit. Must set bReturnPhysicalMaterial to true in the query params for this to be returned.
* @param HitActor Actor hit by the trace.
* @param HitComponent PrimitiveComponent hit by the trace.
* @param HitBoneName Name of the bone hit (valid only if we hit a skeletal mesh).
* @param HitItem Primitive-specific data recording which item in the primitive was hit
* @param FaceIndex If colliding with trimesh or landscape, index of face that was hit.
*/
UFUNCTION(BlueprintPure, Category = "Collision", meta = (NativeMakeFunc, AdvancedDisplay="2", Normal="0,0,1", ImpactNormal="0,0,1"))
static FHitResult MakeHitResult(bool bBlockingHit, bool bInitialOverlap, float Time, float Distance, FVector Location, FVector ImpactPoint, FVector Normal, FVector ImpactNormal, class UPhysicalMaterial* PhysMat, class AActor* HitActor, class UPrimitiveComponent* HitComponent, FName HitBoneName, int32 HitItem, int32 FaceIndex, FVector TraceStart, FVector TraceEnd);
/** Returns the EPhysicalSurface type of the given Hit.
* To edit surface type for your project, use ProjectSettings/Physics/PhysicalSurface section
*/
UFUNCTION(BlueprintPure, Category="Collision")
static EPhysicalSurface GetSurfaceType(const struct FHitResult& Hit);
/**
* Try and find the UV for a collision impact. Note this ONLY works if 'Support UV From Hit Results' is enabled in Physics Settings.
*/
UFUNCTION(BlueprintPure, Category = "Collision")
static bool FindCollisionUV(const struct FHitResult& Hit, int32 UVChannel, FVector2D& UV);
// --- Save Game functions ------------------------------
/**
* Create a new, empty SaveGame object to set data on and then pass to SaveGameToSlot.
* @param SaveGameClass Class of SaveGame to create
* @return New SaveGame object to write data to
*/
UFUNCTION(BlueprintCallable, Category="SaveGame", meta=(DeterminesOutputType="SaveGameClass"))
static USaveGame* CreateSaveGameObject(TSubclassOf<USaveGame> SaveGameClass);
/**
* Serialize our USaveGame object into a given array of bytes
* @note This will write out all non-transient properties, the SaveGame property flag is not checked
*
* @param SaveGameObject Object that contains data about the save game that we want to write out
* @param OutSaveData Byte array that is written into
* @return Whether we successfully wrote data
*/
static bool SaveGameToMemory(USaveGame* SaveGameObject, TArray<uint8>& OutSaveData);
/**
* Save the contents of the buffer to a platform-specific save slot/file
* @param InSaveData Data to save
* @param SlotName Name of save game slot to save to.
* @param UserIndex For some platforms, master user index to identify the user doing the saving.
* @return Whether we successfully saved this information
*/
static bool SaveDataToSlot(const TArray<uint8>& InSaveData, const FString& SlotName, const int32 UserIndex);
/**
* Schedule an async save to a specific slot. UAsyncActionHandleSaveGame::AsyncSaveGameToSlot is the blueprint version of this.
* This will do the serialize on the game thread, the platform-specific write on a worker thread, then call the complete delegate on the game thread.
* The passed in delegate will be copied to a worker thread so make sure any payload is thread safe to copy by value.
*
* @param SaveGameObject Object that contains data about the save game that we want to write out.
* @param SlotName Name of the save game slot to load from.
* @param UserIndex For some platforms, master user index to identify the user doing the loading.
* @param SavedDelegate Delegate that will be called on game thread when save succeeds or fails.
*/
static void AsyncSaveGameToSlot(USaveGame* SaveGameObject, const FString& SlotName, const int32 UserIndex, FAsyncSaveGameToSlotDelegate SavedDelegate = FAsyncSaveGameToSlotDelegate());
/**
* Save the contents of the SaveGameObject to a platform-specific save slot/file.
* @note This will write out all non-transient properties, the SaveGame property flag is not checked
*
* @param SaveGameObject Object that contains data about the save game that we want to write out
* @param SlotName Name of save game slot to save to.
* @param UserIndex For some platforms, master user index to identify the user doing the saving.
* @return Whether we successfully saved this information
*/
UFUNCTION(BlueprintCallable, Category="SaveGame")
static bool SaveGameToSlot(USaveGame* SaveGameObject, const FString& SlotName, const int32 UserIndex);
/**
* See if a save game exists with the specified name.
* @param SlotName Name of save game slot.
* @param UserIndex For some platforms, master user index to identify the user doing the saving.
*/
UFUNCTION(BlueprintCallable, Category="SaveGame")
static bool DoesSaveGameExist(const FString& SlotName, const int32 UserIndex);
/**
* Tries to load a SaveGame object from a given array of bytes.
* @param InSaveData The array containing the serialized USaveGame data to load
* @return Object containing loaded game state (nullptr if load fails)
*/
static USaveGame* LoadGameFromMemory(const TArray<uint8>& InSaveData);
/**
* Load contents from a slot/file into a buffer of save data.
* @param OutSaveData Data buffer to load into
* @param SlotName Name of save game slot to save to.
* @param UserIndex For some platforms, master user index to identify the user doing the saving.
* @return Whether valid save data was found and loaded.
*/
static bool LoadDataFromSlot(TArray<uint8>& OutSaveData, const FString& SlotName, const int32 UserIndex);
/**
* Schedule an async load of a specific slot. UAsyncActionHandleSaveGame::AsyncLoadGameFromSlot is the blueprint version of this.
* This will do the platform-specific read on a worker thread, the serialize and creation on the game thread, and then will call the passed in delegate
* The passed in delegate will be copied to a worker thread so make sure any payload is thread safe to copy by value
*
* @param SlotName Name of the save game slot to load from.
* @param UserIndex For some platforms, master user index to identify the user doing the loading.
* @param LoadedDelegate Delegate that will be called on game thread when load succeeds or fails.
*/
static void AsyncLoadGameFromSlot(const FString& SlotName, const int32 UserIndex, FAsyncLoadGameFromSlotDelegate LoadedDelegate);
/**
* Load the contents from a given slot.
* @param SlotName Name of the save game slot to load from.
* @param UserIndex For some platforms, master user index to identify the user doing the loading.
* @return Object containing loaded game state (nullptr if load fails)
*/
UFUNCTION(BlueprintCallable, Category="SaveGame")
static USaveGame* LoadGameFromSlot(const FString& SlotName, const int32 UserIndex);
/**
* Takes the provided buffer and consumes it, parsing past the internal header data, returning a MemoryReader
* that has: 1) been set up with all the related header information, and 2) offset to where tagged USaveGame object
* serialization begins. NOTE: that the returned object has a reference to the supplied data - scope them
* accordingly.
*
* @param SaveData A byte array, presumably produced by one of the SaveGame functions here.
* @return A memory reader, wrapping SaveData, offset to the point past the header data.
*/
static FMemoryReader StripSaveGameHeader(const TArray<uint8>& SaveData);
/**
* Delete a save game in a particular slot.
* @param SlotName Name of save game slot to delete.
* @param UserIndex For some platforms, master user index to identify the user doing the deletion.
* @return True if a file was actually able to be deleted. use DoesSaveGameExist to distinguish between delete failures and failure due to file not existing.
*/
UFUNCTION(BlueprintCallable, Category = "SaveGame")
static bool DeleteGameInSlot(const FString& SlotName, const int32 UserIndex);
/** Returns the frame delta time in seconds, adjusted by time dilation. */
UFUNCTION(BlueprintPure, Category = "Utilities|Time", meta = (WorldContext="WorldContextObject"))
static float GetWorldDeltaSeconds(const UObject* WorldContextObject);
/** Returns time in seconds since world was brought up for play, adjusted by time dilation and IS stopped when game pauses */
UFUNCTION(BlueprintPure, Category="Utilities|Time", meta=(WorldContext="WorldContextObject"))
static float GetTimeSeconds(const UObject* WorldContextObject);
/** Returns time in seconds since world was brought up for play, adjusted by time dilation and IS NOT stopped when game pauses */
UFUNCTION(BlueprintPure, Category="Utilities|Time", meta=(WorldContext="WorldContextObject"))
static float GetUnpausedTimeSeconds(const UObject* WorldContextObject);
/** Returns time in seconds since world was brought up for play, does NOT stop when game pauses, NOT dilated/clamped */
UFUNCTION(BlueprintPure, Category="Utilities|Time", meta=(WorldContext="WorldContextObject"))
static float GetRealTimeSeconds(const UObject* WorldContextObject);
/** Returns time in seconds since world was brought up for play, IS stopped when game pauses, NOT dilated/clamped. */
UFUNCTION(BlueprintPure, Category="Utilities|Time", meta=(WorldContext="WorldContextObject"))
static float GetAudioTimeSeconds(const UObject* WorldContextObject);
/** Returns time in seconds since the application was started. Unlike the other time functions this is accurate to the exact time this function is called instead of set once per frame. */
UFUNCTION(BlueprintPure, Category="Utilities|Time", meta=(WorldContext="WorldContextObject"))
static void GetAccurateRealTime(const UObject* WorldContextObject, int32& Seconds, float& PartialSeconds);
/*~ DVRStreaming API */
/**
* Toggle live DVR streaming.
* @param Enable If true enable streaming, otherwise disable.
*/
UFUNCTION(BlueprintCallable, Category="Game", meta=(Enable="true"))
static void EnableLiveStreaming(bool Enable);
/**
* Returns the string name of the current platform, to perform different behavior based on platform.
* (Platform names include Windows, Mac, IOS, Android, PS4, XboxOne, Linux) */
UFUNCTION(BlueprintPure, Category="Game")
static FString GetPlatformName();
/**
* Calculates an launch velocity for a projectile to hit a specified point.
* @param TossVelocity (output) Result launch velocity.
* @param StartLocation Intended launch location
* @param EndLocation Desired landing location
* @param LaunchSpeed Desired launch speed
* @param OverrideGravityZ Optional gravity override. 0 means "do not override".
* @param TraceOption Controls whether or not to validate a clear path by tracing along the calculated arc
* @param CollisionRadius Radius of the projectile (assumed spherical), used when tracing
* @param bFavorHighArc If true and there are 2 valid solutions, will return the higher arc. If false, will favor the lower arc.
* @param bDrawDebug When true, a debug arc is drawn (red for an invalid arc, green for a valid arc)
* @return Returns false if there is no valid solution or the valid solutions are blocked. Returns true otherwise.
*/
UFUNCTION(BlueprintCallable, Category="Game|Components|ProjectileMovement", DisplayName="SuggestProjectileVelocity", meta=(WorldContext="WorldContextObject"))
static bool BlueprintSuggestProjectileVelocity(const UObject* WorldContextObject, FVector& TossVelocity, FVector StartLocation, FVector EndLocation, float LaunchSpeed, float OverrideGravityZ, ESuggestProjVelocityTraceOption::Type TraceOption, float CollisionRadius, bool bFavorHighArc, bool bDrawDebug);
/** Native version, has more options than the Blueprint version. */
static bool SuggestProjectileVelocity(const UObject* WorldContextObject, FVector& TossVelocity, FVector StartLocation, FVector EndLocation, float TossSpeed, bool bHighArc = false, float CollisionRadius = 0.f, float OverrideGravityZ = 0, ESuggestProjVelocityTraceOption::Type TraceOption = ESuggestProjVelocityTraceOption::TraceFullPath, const FCollisionResponseParams& ResponseParam = FCollisionResponseParams::DefaultResponseParam, const TArray<AActor*>& ActorsToIgnore = TArray<AActor*>(), bool bDrawDebug = false);
/**
* Predict the arc of a virtual projectile affected by gravity with collision checks along the arc. Returns a list of positions of the simulated arc and the destination reached by the simulation.
* Returns true if it hit something.
*
* @param OutPathPositions Predicted projectile path. Ordered series of positions from StartPos to the end. Includes location at point of impact if it hit something.
* @param OutHit Predicted hit result, if the projectile will hit something
* @param OutLastTraceDestination Goal position of the final trace it did. Will not be in the path if there is a hit.
* @param StartPos First start trace location
* @param LaunchVelocity Velocity the "virtual projectile" is launched at
* @param bTracePath Trace along the entire path to look for blocking hits
* @param ProjectileRadius Radius of the virtual projectile to sweep against the environment
* @param ObjectTypes ObjectTypes to trace against, if bTracePath is true.
* @param bTraceComplex Use TraceComplex (trace against triangles not primitives)
* @param ActorsToIgnore Actors to exclude from the traces
* @param DrawDebugType Debug type (one-frame, duration, persistent)
* @param DrawDebugTime Duration of debug lines (only relevant for DrawDebugType::Duration)
* @param SimFrequency Determines size of each sub-step in the simulation (chopping up MaxSimTime)
* @param MaxSimTime Maximum simulation time for the virtual projectile.
* @param OverrideGravityZ Optional override of Gravity (if 0, uses WorldGravityZ)
* @return True if hit something along the path if tracing for collision.
*/
UFUNCTION(BlueprintCallable, Category = "Game", DisplayName="Predict Projectile Path By ObjectType", meta = (WorldContext = "WorldContextObject", AutoCreateRefTerm = "ActorsToIgnore", AdvancedDisplay = "DrawDebugTime, DrawDebugType, SimFrequency, MaxSimTime, OverrideGravityZ", bTracePath = true))
static bool Blueprint_PredictProjectilePath_ByObjectType(const UObject* WorldContextObject, FHitResult& OutHit, TArray<FVector>& OutPathPositions, FVector& OutLastTraceDestination, FVector StartPos, FVector LaunchVelocity, bool bTracePath, float ProjectileRadius, const TArray<TEnumAsByte<EObjectTypeQuery> >& ObjectTypes, bool bTraceComplex, const TArray<AActor*>& ActorsToIgnore, EDrawDebugTrace::Type DrawDebugType, float DrawDebugTime, float SimFrequency = 15.f, float MaxSimTime = 2.f, float OverrideGravityZ = 0);
/**
* Predict the arc of a virtual projectile affected by gravity with collision checks along the arc. Returns a list of positions of the simulated arc and the destination reached by the simulation.
* Returns true if it hit something (if tracing with collision).
*
* @param OutPathPositions Predicted projectile path. Ordered series of positions from StartPos to the end. Includes location at point of impact if it hit something.
* @param OutHit Predicted hit result, if the projectile will hit something
* @param OutLastTraceDestination Goal position of the final trace it did. Will not be in the path if there is a hit.
* @param StartPos First start trace location
* @param LaunchVelocity Velocity the "virtual projectile" is launched at
* @param bTracePath Trace along the entire path to look for blocking hits
* @param ProjectileRadius Radius of the virtual projectile to sweep against the environment
* @param TraceChannel TraceChannel to trace against, if bTracePath is true.
* @param bTraceComplex Use TraceComplex (trace against triangles not primitives)
* @param ActorsToIgnore Actors to exclude from the traces
* @param DrawDebugType Debug type (one-frame, duration, persistent)
* @param DrawDebugTime Duration of debug lines (only relevant for DrawDebugType::Duration)
* @param SimFrequency Determines size of each sub-step in the simulation (chopping up MaxSimTime)
* @param MaxSimTime Maximum simulation time for the virtual projectile.
* @param OverrideGravityZ Optional override of Gravity (if 0, uses WorldGravityZ)
* @return True if hit something along the path (if tracing with collision).
*/
UFUNCTION(BlueprintCallable, Category = "Game", DisplayName="Predict Projectile Path By TraceChannel", meta = (WorldContext = "WorldContextObject", AutoCreateRefTerm = "ActorsToIgnore", AdvancedDisplay = "DrawDebugTime, DrawDebugType, SimFrequency, MaxSimTime, OverrideGravityZ", TraceChannel = ECC_WorldDynamic, bTracePath = true))
static bool Blueprint_PredictProjectilePath_ByTraceChannel(const UObject* WorldContextObject, FHitResult& OutHit, TArray<FVector>& OutPathPositions, FVector& OutLastTraceDestination, FVector StartPos, FVector LaunchVelocity, bool bTracePath, float ProjectileRadius, TEnumAsByte<ECollisionChannel> TraceChannel, bool bTraceComplex, const TArray<AActor*>& ActorsToIgnore, EDrawDebugTrace::Type DrawDebugType, float DrawDebugTime, float SimFrequency = 15.f, float MaxSimTime = 2.f, float OverrideGravityZ = 0);
/**
* Predict the arc of a virtual projectile affected by gravity with collision checks along the arc.
* Returns true if it hit something.
*
* @param PredictParams Input params to the trace (start location, velocity, time to simulate, etc).
* @param PredictResult Output result of the trace (Hit result, array of location/velocity/times for each trace step, etc).
* @return True if hit something along the path (if tracing with collision).
*/
static bool PredictProjectilePath(const UObject* WorldContextObject, const FPredictProjectilePathParams& PredictParams, FPredictProjectilePathResult& PredictResult);
/**
* Deprecated version, use version with input/output struct params instead.
*/
UE_DEPRECATED(4.15, "PredictProjectilePath with many parameters has been deprecated in favor of the version taking single input parameter and output result structs.")
static bool PredictProjectilePath(const UObject* WorldContextObject, FHitResult& OutHit, TArray<FVector>& OutPathPositions, FVector& OutLastTraceDestination, FVector StartPos, FVector LaunchVelocity, bool bTracePath, float ProjectileRadius, const TArray<TEnumAsByte<EObjectTypeQuery> >& ObjectTypes, bool bTraceComplex, const TArray<AActor*>& ActorsToIgnore, EDrawDebugTrace::Type DrawDebugType, float DrawDebugTime, float SimFrequency = 15.f, float MaxSimTime = 2.f, float OverrideGravityZ = 0);
/**
* Predict the arc of a virtual projectile affected by gravity with collision checks along the arc.
* Returns true if it hit something.
*
* @param PredictParams Input params to the trace (start location, velocity, time to simulate, etc).
* @param PredictResult Output result of the trace (Hit result, array of location/velocity/times for each trace step, etc).
* @return True if hit something along the path (if tracing with collision).
*/
UFUNCTION(BlueprintCallable, Category = "Game", DisplayName="Predict Projectile Path (Advanced)", meta = (WorldContext = "WorldContextObject"))
static bool Blueprint_PredictProjectilePath_Advanced(const UObject* WorldContextObject, const FPredictProjectilePathParams& PredictParams, FPredictProjectilePathResult& PredictResult);
/**
* Returns the launch velocity needed for a projectile at rest at StartPos to land on EndPos.
* Assumes a medium arc (e.g. 45 deg on level ground). Projectile velocity is variable and unconstrained.
* Does no tracing.
*
* @param OutLaunchVelocity Returns the launch velocity required to reach the EndPos
* @param StartPos Start position of the simulation
* @param EndPos Desired end location for the simulation
* @param OverrideGravityZ Optional override of WorldGravityZ
* @param ArcParam Change height of arc between 0.0-1.0 where 0.5 is the default medium arc, 0 is up, and 1 is directly toward EndPos.
*/
UFUNCTION(BlueprintCallable, Category = "Game", DisplayName = "SuggestProjectileVelocity Custom Arc", meta = (WorldContext = "WorldContextObject", AdvancedDisplay = "OverrideGravityZ, ArcParam"))
static bool SuggestProjectileVelocity_CustomArc(const UObject* WorldContextObject, FVector& OutLaunchVelocity, FVector StartPos, FVector EndPos, float OverrideGravityZ = 0, float ArcParam = 0.5f);
/** Returns world origin current location. */
UFUNCTION(BlueprintPure, Category="Game", meta=(WorldContext="WorldContextObject") )
static FIntVector GetWorldOriginLocation(const UObject* WorldContextObject);
/** Requests a new location for a world origin. */
UFUNCTION(BlueprintCallable, Category="Game", meta=(WorldContext="WorldContextObject"))
static void SetWorldOriginLocation(const UObject* WorldContextObject, FIntVector NewLocation);
/** Returns origin based position for local world location. */
UFUNCTION(BlueprintPure, Category = "Game", meta = (WorldContext = "WorldContextObject"))
static FVector RebaseLocalOriginOntoZero(UObject* WorldContextObject, FVector WorldLocation);
/** Returns local location for origin based position. */
UFUNCTION(BlueprintPure, Category = "Game", meta = (WorldContext = "WorldContextObject"))
static FVector RebaseZeroOriginOntoLocal(UObject* WorldContextObject, FVector WorldLocation);
/**
* Counts how many grass foliage instances overlap a given sphere.
*
* @param Mesh The static mesh we are interested in counting.
* @param CenterPosition The center position of the sphere.
* @param Radius The radius of the sphere.
*
* @return Number of foliage instances with their mesh set to Mesh that overlap the sphere.
*/
UFUNCTION(BlueprintCallable, Category = "Foliage", meta = (WorldContext = "WorldContextObject", UnsafeDuringActorConstruction = "true"))
static int32 GrassOverlappingSphereCount(const UObject* WorldContextObject, const UStaticMesh* StaticMesh, FVector CenterPosition, float Radius);
/**
* Transforms the given 2D screen space coordinate into a 3D world-space point and direction.
* @param Player Deproject using this player's view.
* @param ScreenPosition 2D screen space to deproject.
* @param WorldPosition (out) Corresponding 3D position in world space.
* @param WorldDirection (out) World space direction vector away from the camera at the given 2d point.
*/
UFUNCTION(BlueprintPure, Category = "Utilities", meta = (Keywords = "unproject"))
static bool DeprojectScreenToWorld(APlayerController const* Player, const FVector2D& ScreenPosition, FVector& WorldPosition, FVector& WorldDirection);
/**
* Transforms the given 3D world-space point into a its 2D screen space coordinate.
* @param Player Project using this player's view.
* @param WorldPosition World position to project.
* @param ScreenPosition (out) Corresponding 2D position in screen space
* @param bPlayerViewportRelative Should this be relative to the player viewport subregion (useful when using player attached widgets in split screen)
*/
UFUNCTION(BlueprintPure, Category = "Utilities")
static bool ProjectWorldToScreen(APlayerController const* Player, const FVector& WorldPosition, FVector2D& ScreenPosition, bool bPlayerViewportRelative = false);
/**
* Returns the View Matrix, Projection Matrix and the View x Projection Matrix for a given view
* @param DesiredView FMinimalViewInfo struct for a camera.
* @param ViewMatrix (out) Corresponding View Matrix
* @param ProjectionMatrix (out) Corresponding Projection Matrix
* @param ViewProjectionMatrix (out) Corresponding View x Projection Matrix
*/
UFUNCTION(BlueprintPure, Category = "Utilities")
static void GetViewProjectionMatrix(FMinimalViewInfo DesiredView, FMatrix &ViewMatrix, FMatrix &ProjectionMatrix, FMatrix &ViewProjectionMatrix);
/**
* Calculate view-projection matrices from a specified view target
*/
static void CalculateViewProjectionMatricesFromViewTarget(AActor* InViewTarget, FMatrix& OutViewMatrix, FMatrix& OutProjectionMatrix, FMatrix& OutViewProjectionMatrix);
/**
* Calculate view-projection matrices from a specified MinimalViewInfo and optional custom projection matrix
*/
static void CalculateViewProjectionMatricesFromMinimalView(const FMinimalViewInfo& MinimalViewInfo, const TOptional<FMatrix>& CustomProjectionMatrix, FMatrix& OutViewMatrix, FMatrix& OutProjectionMatrix, FMatrix& OutViewProjectionMatrix);
//~ Utility functions for interacting with Options strings
//~=========================================================================
//~ URL Parsing
static bool GrabOption( FString& Options, FString& ResultString );
/**
* Break up a key=value pair into its key and value.
* @param Pair The string containing a pair to split apart.
* @param Key (out) Key portion of Pair. If no = in string will be the same as Pair.
* @param Value (out) Value portion of Pair. If no = in string will be empty.
*/
UFUNCTION(BlueprintPure, Category="Game Options", meta=(BlueprintThreadSafe))
static void GetKeyValue( const FString& Pair, FString& Key, FString& Value );
/**
* Find an option in the options string and return it.
* @param Options The string containing the options.
* @param Key The key to find the value of in Options.
* @return The value associated with Key if Key found in Options string.
*/
UFUNCTION(BlueprintPure, Category="Game Options", meta=(BlueprintThreadSafe))
static FString ParseOption( FString Options, const FString& Key );
/**
* Returns whether a key exists in an options string.
* @param Options The string containing the options.
* @param Key The key to determine if it exists in Options.
* @return Whether Key was found in Options.
*/
UFUNCTION(BlueprintPure, Category="Game Options", meta=(BlueprintThreadSafe))
static bool HasOption( FString Options, const FString& InKey );
/**
* Find an option in the options string and return it as an integer.
* @param Options The string containing the options.
* @param Key The key to find the value of in Options.
* @return The value associated with Key as an integer if Key found in Options string, otherwise DefaultValue.
*/
UFUNCTION(BlueprintPure, Category="Game Options", meta=(BlueprintThreadSafe))
static int32 GetIntOption( const FString& Options, const FString& Key, int32 DefaultValue);
//~=========================================================================
//~ Launch Options Parsing
/**
* Checks the commandline to see if the desired option was specified on the commandline (e.g. -demobuild)
* @return True if the launch option was specified on the commandline, false otherwise
*/
UFUNCTION(BlueprintPure, Category = "Utilities")
static bool HasLaunchOption(const FString& OptionToCheck);
/**
* If accessibility is enabled, have the platform announce a string to the player.
* These announcements can be interrupted by system accessibiliity announcements or other accessibility announcement requests.
* This should be used judiciously as flooding a player with announcements can be overrwhelming and confusing.
* Try to make announcements concise and clear.
* NOTE: Currently only supported on Win10, Mac, iOS
*/
UFUNCTION(BlueprintCallable, Category = "Utilities")
static void AnnounceAccessibleString(const FString& AnnouncementString);
};
作者：砥才人
出处：https://www.cnblogs.com/shiroe
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