@implementation InputLayer - (id)init { if(self = [super init]) { winSize = [[CCDirector sharedDirector] winSize]; [self addJoystick]; [self addFireButton]; [self scheduleUpdate]; } return self; } //添加一个按钮 - (void)addFireButton { fireButton = [SneakyButton button]; fireButton.isHoldable = YES; // 按住按钮持续触发 //按钮添加皮肤 SneakyButtonSkinnedBase *skinFireButton = [SneakyButtonSkinnedBase skinButton]; skinFireButton.defaultSprite = [CCSprite spriteWithSpriteFrameName:@"button-default.png"]; skinFireButton.pressSprite = [CCSprite spriteWithSpriteFrameName:@"button-pressed.png"]; skinFireButton.button = fireButton; skinFireButton.position = CGPointMake(winSize.width - skinFireButton.contentSize.width, skinFireButton.contentSize.height); [self addChild:skinFireButton]; } //添加一个摇杆 - (void)addJoystick { joystick = [SneakyJoystick joystick:CGRectMake(0, 0, 0, 0 )]; joystick.autoCenter = YES; //是否自动回到中心 //360度 joystick.hasDeadzone = YES; //是否支持死亡区域，该区域不会触发 joystick.deadRadius = 20;//死亡区域的半径 //限制可移动的方向数量 // joystick.isDPad = YES; // joystick.numberOfDirections = 8; //方向数量 //给摇杆添加皮肤 SneakyJoystickSkinnedBase *skinJoystick = [SneakyJoystickSkinnedBase skinJoystick]; skinJoystick.backgroundSprite = [CCSprite spriteWithSpriteFrameName:@"button-disabled.png"]; skinJoystick.thumbSprite = [CCSprite spriteWithSpriteFrameName:@"button-disabled.png"]; skinJoystick.thumbSprite.scale = 0.5f; skinJoystick.joystick = joystick; skinJoystick.position = CGPointMake(skinJoystick.contentSize.width , skinJoystick.contentSize.height); [self addChild:skinJoystick]; } - (void)update:(ccTime)delta { GameScene *scene = [GameScene sharedGameScene]; Ship *ship = (Ship *)[scene ship]; totalTime += delta; //点击按钮触发 if(fireButton.active && totalTime > nextShootTime) { nextShootTime = totalTime + 0.5f; [scene shootBullet:ship]; } if (fireButton.active == NO) { nextShootTime = 0; } //joystick.velocity 这个值非常小需要将其放大（根据实际情况调值） CGPoint velocity = ccpMult(joystick.velocity, 200); if(velocity.x != 0 && velocity.y != 0) { ship.position = CGPointMake(ship.position.x + velocity.x * delta, ship.position.y + velocity.y *delta); } }
运行图如下：
二、CCJoystick类（最新版的已经支持搓招了哦，下载链接）
CCJoyStick 是一个基于 Cocos2d 的摇杆类，简单几行代码即可为您的游戏增加一个强大的模拟摇杆。而且最新版本已经支持摇杆搓招儿，满足格斗类游戏开发者的需求。
基于该类可自主扩展诸多摇杆效果，比如 360 度模式、8 向模式。使用方法如下：
// 创建摇杆
myjoystick=[CCJoyStick initWithBallRadius:25 MoveAreaRadius:65 isFollowTouch:NO isCanVisible:YES isAutoHide:NO hasAnimation:YES];//BallRadius即模拟摇杆球的半径，MoveAreaRadius即摇杆球可移动的范围半径，isFollowTouch即是否将摇杆基准位置 跟随touch坐标，isCanVisible即是否可见，isAutoHide即是否自动隐藏（touchend即隐藏），hasAnimation即 是否显示摇杆复位动画
//添加皮肤
[myjoystick setBallTexture:@"Ball.png"];//可选，不设置即看不见摇杆球
[myjoystick setDockTexture:@"Dock.png"];//可选，不设置即看不见底座[myjoystick setStickTexture:@"Stick.jpg"];//可选，不设置即看不见连动杆[myjoystick setHitAreaWithRadius:100];//摇杆激活区域为基准坐标半径，默认为另一个方法，设置屏幕矩形区域为激活区域setHitAreaWithRectmyjoystick.position=ccp(100,100);myjoystick.delegate=self;[self addChild:myjoystick];该摇杆类包含3个事件：
1、- (void) onCCJoyStickUpdate:(CCNode*)sender Angle:(float)angle Direction:(CGPoint)direction Power:(float)power;//angle用来控制角色朝向，direction用来设置移动坐标，power为力度用于控制速度快慢
2 、- (void) onCCJoyStickActivated:(CCNode*)sender;3、- (void) onCCJoyStickDeactivated:(CCNode*)sender;
实现代码如下：
1 @implementation OperateLayer 2 3 - (id)init 4 { 5 if(self = [super init]) 6 { 7 winSize = [[CCDirector sharedDirector] winSize]; 8 joystick = [CCJoyStick initWithBallRadius:25 9 MoveAreaRadius:65 10 isFollowTouch:NO 11 isCanVisible:YES 12 isAutoHide:NO 13 hasAnimation:YES]; 14 [joystick setBallTexture:@"Ball.png"]; 15 [joystick setDockTexture:@"Dock.png"]; 16 [joystick setStickTexture:@"Stick.jpg"]; 17 [joystick setHitAreaWithRadius:100]; 18 19 joystick.position = CGPointMake(100, 100); 20 [joystick setDelegate:self]; 21 joystick.opacity = 150; 22 [self addChild:joystick]; 23 24 CCLabelTTF *label= [CCLabelTTF labelWithString:@"shoot" fontName:@"Arial" fontSize:30]; 25 CCMenuItemLabel *shoot = [CCMenuItemLabel itemWithLabel:label 26 target:self 27 selector:@selector(shoot:)]; 28 CCMenu *shootMenu = [CCMenu menuWithItems:shoot, nil]; 29 shootMenu.position =CGPointMake( 380, 80); 30 [self addChild:shootMenu]; 31 } 32 return self; 33 } 34 35 - (void)shoot:(CCMenuItem *) menuItem{ 36 GameScene *scene = [GameScene sharedGameScene]; 37 38 [scene shootBullet:scene.ship]; 39 } 40 - (void) onCCJoyStickUpdate:(CCNode*)sender Angle:(float)angle Direction:(CGPoint)direction Power:(float)power 41 { 42 if (sender==joystick) { 43 NSLog(@"angle:%f power:%f direction:%f,%f",angle,power,direction.x,direction.y); 44 45 GameScene *scene = [GameScene sharedGameScene]; 46 47 float nextx=scene.ship.position.x; 48 float nexty=scene.ship.position.y; 49 50 nextx+=direction.x * (power*8); 51 nexty+=direction.y * (power*8); 52 53 scene.ship.position=ccp(nextx,nexty); 54 } 55 } 56 57 - (void) onCCJoyStickActivated:(CCNode*)sender 58 { 59 if (sender==joystick) { 60 [joystick setBallTexture:@"Ball_hl.png"]; 61 [joystick setDockTexture:@"Dock_hl.png"]; 62 joystick.opacity = 255; 63 } 64 } 65 - (void) onCCJoyStickDeactivated:(CCNode*)sender 66 { 67 if (sender==joystick) { 68 [joystick setBallTexture:@"Ball.png"]; 69 [joystick setDockTexture:@"Dock.png"]; 70 joystick.opacity = 150; 71 } 72 } 73 @end
运行效果图：
以下是两个类库的下载链接，有需要的可以下载看看哦 ~
ps:咱新手们注意了哈,用最新的cocos2d时，看看AppDelegate.m 中的
[glView setMultipleTouchEnabled:YES];设置为YES了没有。 我刚开始做的时候就没设置还查了好久，嘿嘿，有点菜 ...