cocos2d学习之路四（添加遥控杆）

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