Xenko C#开源游戏引擎入门

 

 

最近使有和 Three.js 开发三维页面，觉得很有趣。以前在做WP应用的时候使用过MonoGame做过一点东西，后来Windows 10上来，MonoGame好像不怎么支持了，也没用了。最近在看Windows 下的C# 3D绘图，发现了SharpDx，随藤摸瓜又爬到来了MonoGame 和发现Xenko.

MonoGame：当前又支持UWP应用，但提供的模板指定的是 14393的SDK。（下次再试试，这今试Xenko）

教程：https://docs.microsoft.com/zh-cn/xamarin/graphics-games/monogame/

 

Xenko：也是通过Xamarin进行跨平台，现在已是MIT开源。原生支持UWP，但用GameStudio 3.0.0.5生成的项目指定的是 10240的SDK，所以做UWP的话，用新SDK，则要改改。今天折腾一翻：

（为什么不用流行的Unity 3D呢？因为不懂，个人喜欢VS的编码方式，什么引用都看得见，何况Unity3D免费版有限制）

以下使用Xenko创建Windows/Uwp项目：

1.安装SDK:https://xenko.com/

2.启动Xenko 新建项目 MyGame2

 

3、创建的已是完整可运行的项目

切换UWP运行：

刷了一下，没有运行成功

使用VS 2017打开，提示没有安装 10240的SDK（然则我就是不想安装）

点击确定更新

VS不干了：

 

 那就手动来，文本形式打开项目，修改成当前版本

 

 重新加载项目：

出来了，此时重新生成项目。居然成功了。如果不成功，可以做以下尝试：

把nuget的Direct3D11的文件拷到UWP下：

其实不知道有没有用。因为我建第一个项目的时候是不行了，被我修改一翻后，第二个项目居然行了。

 

 

 

4、代码结构

 甚是熟悉的UWP代码结构

 

MyGame2.UWP引用MyGame2.Game的游戏项目。UWP只是一个壳，实际游戏在MyGame2.Game中

看 BasicCameraController.cs 文件源码

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using System; using Xenko.Core; using Xenko.Core.Mathematics; using Xenko.Engine; using Xenko.Input;   namespace MyGame2 {     /// <summary>     /// A script that allows to move and rotate an entity through keyboard, mouse and touch input to provide basic camera navigation.     /// </summary>     /// <remarks>     /// The entity can be moved using W, A, S, D, Q and E, arrow keys or dragging/scaling using multi-touch.     /// Rotation is achieved using the Numpad, the mouse while holding the right mouse button, or dragging using single-touch.     /// </remarks>     public class BasicCameraController : SyncScript     {         private const float MaximumPitch = MathUtil.PiOverTwo * 0.99f;           private Vector3 upVector;         private Vector3 translation;         private float yaw;         private float pitch;           public Vector3 KeyboardMovementSpeed { get; set; } = new Vector3(5.0f);           public Vector3 TouchMovementSpeed { get; set; } = new Vector3(40, 40, 20);           public float SpeedFactor { get; set; } = 5.0f;           public Vector2 KeyboardRotationSpeed { get; set; } = new Vector2(3.0f);           public Vector2 MouseRotationSpeed { get; set; } = new Vector2(90.0f, 60.0f);           public Vector2 TouchRotationSpeed { get; set; } = new Vector2(60.0f, 40.0f);           public override void Start()         {             base.Start();               // Default up-direction             upVector = Vector3.UnitY;               // Configure touch input             if (!Platform.IsWindowsDesktop)             {                 Input.Gestures.Add(new GestureConfigDrag());                 Input.Gestures.Add(new GestureConfigComposite());             }         }           public override void Update()         {             ProcessInput();             UpdateTransform();         }           private void ProcessInput()         {             translation = Vector3.Zero;             yaw = 0;             pitch = 0;               // Move with keyboard             if (Input.IsKeyDown(Keys.W) || Input.IsKeyDown(Keys.Up))             {                 translation.Z = -KeyboardMovementSpeed.Z;             }             else if (Input.IsKeyDown(Keys.S) || Input.IsKeyDown(Keys.Down))             {                 translation.Z = KeyboardMovementSpeed.Z;             }               if (Input.IsKeyDown(Keys.A) || Input.IsKeyDown(Keys.Left))             {                 translation.X = -KeyboardMovementSpeed.X;             }             else if (Input.IsKeyDown(Keys.D) || Input.IsKeyDown(Keys.Right))             {                 translation.X = KeyboardMovementSpeed.X;             }               if (Input.IsKeyDown(Keys.Q))             {                 translation.Y = -KeyboardMovementSpeed.Y;             }             else if (Input.IsKeyDown(Keys.E))             {                 translation.Y = KeyboardMovementSpeed.Y;             }               // Alternative translation speed             if (Input.IsKeyDown(Keys.LeftShift) || Input.IsKeyDown(Keys.RightShift))             {                 translation *= SpeedFactor;             }               // Rotate with keyboard             if (Input.IsKeyDown(Keys.NumPad2))             {                 pitch = KeyboardRotationSpeed.X;             }             else if (Input.IsKeyDown(Keys.NumPad8))             {                 pitch = -KeyboardRotationSpeed.X;             }               if (Input.IsKeyDown(Keys.NumPad4))             {                 yaw = KeyboardRotationSpeed.Y;             }             else if (Input.IsKeyDown(Keys.NumPad6))             {                 yaw = -KeyboardRotationSpeed.Y;             }               // Rotate with mouse             if (Input.IsMouseButtonDown(MouseButton.Right))             {                 Input.LockMousePosition();                 Game.IsMouseVisible = false;                   yaw = -Input.MouseDelta.X * MouseRotationSpeed.X;                 pitch = -Input.MouseDelta.Y * MouseRotationSpeed.Y;             }             else             {                 Input.UnlockMousePosition();                 Game.IsMouseVisible = true;             }                           // Handle gestures             foreach (var gestureEvent in Input.GestureEvents)             {                 switch (gestureEvent.Type)                 {                     // Rotate by dragging                     case GestureType.Drag:                         var drag = (GestureEventDrag)gestureEvent;                         var dragDistance = drag.DeltaTranslation;                         yaw = -dragDistance.X * TouchRotationSpeed.X;                         pitch = -dragDistance.Y * TouchRotationSpeed.Y;                         break;                       // Move along z-axis by scaling and in xy-plane by multi-touch dragging                     case GestureType.Composite:                         var composite = (GestureEventComposite)gestureEvent;                         translation.X = -composite.DeltaTranslation.X * TouchMovementSpeed.X;                         translation.Y = -composite.DeltaTranslation.Y * TouchMovementSpeed.Y;                         translation.Z = -(float)Math.Log(composite.DeltaScale + 1) * TouchMovementSpeed.Z;                         break;                 }             }         }           private void UpdateTransform()         {             var elapsedTime = (float)Game.UpdateTime.Elapsed.TotalSeconds;               translation *= elapsedTime;             yaw *= elapsedTime;             pitch *= elapsedTime;               // Get the local coordinate system             var rotation = Matrix.RotationQuaternion(Entity.Transform.Rotation);               // Enforce the global up-vector by adjusting the local x-axis             var right = Vector3.Cross(rotation.Forward, upVector);             var up = Vector3.Cross(right, rotation.Forward);               // Stabilize             right.Normalize();             up.Normalize();               // Adjust pitch. Prevent it from exceeding up and down facing. Stabilize edge cases.             var currentPitch = MathUtil.PiOverTwo - (float)Math.Acos(Vector3.Dot(rotation.Forward, upVector));             pitch = MathUtil.Clamp(currentPitch + pitch, -MaximumPitch, MaximumPitch) - currentPitch;               // Move in local coordinates             Entity.Transform.Position += Vector3.TransformCoordinate(translation, rotation);               // Yaw around global up-vector, pitch and roll in local space             Entity.Transform.Rotation *= Quaternion.RotationAxis(right, pitch) * Quaternion.RotationAxis(upVector, yaw);         }     } }

　　

5、运行看看