cocos2d简易引导

一.安装

下载:http://www.cocos2d-iphone.org/download

进入目录,执行

./install-templates.sh -u

如果之前已经存在可以这样强制更新

./install-templates.sh -f -u

这会安装三个模版:

　　标准cocos2d模版

　　带box2d的模版

　　带chipmunk的模版

二.sprite小例

1.创建一个标准模版生成的工程.

2.在xxxLayer.m中全局声明(也可以不声明,而在后面用getChildByTag)

CCSprite *seeker1;
CCSprite *cocosGuy;

3.在init的if块里面重写

// create and initialize our seeker sprite, and add it to this layer
seeker1 = [CCSprite spriteWithFile: @"seeker.png"];
seeker1.position = ccp( 50, 100 );
[self addChild:seeker1];

 
// do the same for our cocos2d guy, reusing the app icon as its image
cocosGuy = [CCSprite spriteWithFile: @"Icon.png"];
cocosGuy.position = ccp( 200, 300 );
[self addChild:cocosGuy];

4.动起来(使用action)

上一步的if块最后添加

[self schedule:@selector(nextFrame:)];

然后外面定义nextFrame函数

- (void) nextFrame:(ccTime)dt {
    seeker1.position = ccp( seeker1.position.x + 100*dt, seeker1.position.y );
    if (seeker1.position.x > 480+32) {
        seeker1.position = ccp( -32, seeker1.position.y );
    }
}

5.可交互

添加头

#import "CCTouchDispatcher.h"

重写函数

-(void) registerWithTouchDispatcher
{
	[[CCTouchDispatcher sharedDispatcher] addTargetedDelegate:self priority:0 swallowsTouches:YES];
}

3中if块最后添加

self.isTouchEnabled = YES;

添加函数

- (BOOL)ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event {

    return YES;

}

- (void)ccTouchEnded:(UITouch *)touch withEvent:(UIEvent *)event {

	CGPoint location = [self convertTouchToNodeSpace: touch];

 

	[cocosGuy stopAllActions];

	[cocosGuy runAction: [CCMoveTo actionWithDuration:1 position:location]];    

}

　　

三.场景切换

开始:

[[CCDirector sharedDirector] runWithScene: [HelloWorld scene]];

替换:

[[CCDirector sharedDirector] replaceScene: [SomeOtherScene scene]];

动态替换(pop时不可动画):

CCDirector sharedDirector] replaceScene:
[CCTransitionFade transitionWithDuration:0.5f scene:[SomeOtherScene scene]]];

在你用replace方式替换场景的时候,cocos2d自动清理内存。它会移除所有的节点,停止所有的动作,并且停止所有选择器的预定。所以没

有调用cocos2d的removeAll方法。

另:触摸事件对比

Standard Touch Delegate(标准)

@protocol CCStandardTouchDelegate <NSObject>
@optional
- (void)ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event;
- (void)ccTouchesMoved:(NSSet *)touches withEvent:(UIEvent *)event;
- (void)ccTouchesEnded:(NSSet *)touches withEvent:(UIEvent *)event;
- (void)ccTouchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event;
@end

Targeted Touch Delegate(定向)

@protocol CCTargetedTouchDelegate <NSObject>
- (BOOL)ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event;
@optional
// touch updates:
- (void)ccTouchMoved:(UITouch *)touch withEvent:(UIEvent *)event;
- (void)ccTouchEnded:(UITouch *)touch withEvent:(UIEvent *)event;
- (void)ccTouchCancelled:(UITouch *)touch withEvent:(UIEvent *)event;
@end

注意:

1)都需要self.isTouchEnabled = YES;

2)参数一个是touches一个是touch

3)began的返回值,定向的控制事件是否传递

4)注册

-(void) registerWithTouchDispatcher
{
	[[CCTouchDispatcher sharedDispatcher] addTargetedDelegate:self priority:0 swallowsTouches:YES];
}

不是CCLayer和它的子类要或许点击事件,需要实现协议,并在onEnter中注册触摸种类,并在onExit中卸载

参考:http://www.cocos2d-iphone.org/wiki/doku.php/prog_guide:index

http://www.cocos2d-iphone.org/wiki/doku.php/tips:touchdelegates