cocos2d学习之路四（添加遥控杆）

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添加遥控杆
1. 首先需要再HelloWorldLayer.h中包含ZJoystick.h文件并且让其实现ZJoystickDelegate协议

2.打开HelloWorldLayer.mm文件实现ZJoystickDelegate的一些方法：

#pragma mark - ZJoystick Delegate-(void)joystickControlBegan{}-(void)joystickControlMoved{}-(void)joystickControlEnded{}-(void)joystickControlDidUpdate:(id)joystick toXSpeedRatio:(CGFloat)xSpeedRatio toYSpeedRatio:(CGFloat)ySpeedRatio{    ZJoystick *zJoyStick=(ZJoystick *)joystick;    if (zJoyStick.joystickTag==999) {        CGFloat xPos=_player.position.x;        CGFloat yPos=_player.position.y;        _player.position=ccp(xPos+xSpeedRatio, yPos+ySpeedRatio);//更改要操控精灵的位置                    }   }

3.新增-（void）initJoystick方法在init方法的最后调用

//初始化遥感-(void)initJoystick{    ZJoystick *_joystick2=[ZJoystick joystickNormalSpriteFile:@"JoystickContainer_norm.png" selectedSpriteFile:@"JoystickContainer_trans.png" controllerSpriteFile:@"Joystick_norm.png"];    _joystick2.position=ccp(_joystick2.contentSize.width/2+10, _joystick2.contentSize.height/2+10);    _joystick2.delegate=self;    _joystick2.controlledObject=_player;//要操控的精灵    _joystick2.speedRatio=2.0f;        //精灵的速度    _joystick2.joystickRadius=50.0f;   //遥感器的半径    _joystick2.joystickTag=999;    [self addChild:_joystick2];}

所需图片及Zjoystick.h文件下载http://download.csdn.net/detail/superlele123/7170959

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