cocos2D 虚拟摇杆Joystick功能实现

@implementationInputLayer

-(id)init
{
if(self=[superinit])
{
winSize=[[CCDirectorsharedDirector]winSize];
[selfaddJoystick];
[selfaddFireButton];
[selfscheduleUpdate];
}
returnself;
}

//添加一个按钮
-(void)addFireButton
{
fireButton=[SneakyButtonbutton];
fireButton.isHoldable=YES;//按住按钮持续触发

//按钮添加皮肤
SneakyButtonSkinnedBase*skinFireButton=[SneakyButtonSkinnedBaseskinButton];
skinFireButton.defaultSprite=[CCSpritespriteWithSpriteFrameName:@”button-default.png“];
skinFireButton.pressSprite=[CCSpritespriteWithSpriteFrameName:@”button-pressed.png“];
skinFireButton.button=fireButton;
skinFireButton.position=CGPointMake(winSize.width-skinFireButton.contentSize.width,
skinFireButton.contentSize.height);

[selfaddChild:skinFireButton];

}

//添加一个摇杆
-(void)addJoystick
{
joystick=[SneakyJoystickjoystick: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=[SneakyJoystickSkinnedBaseskinJoystick];
skinJoystick.backgroundSprite=[CCSpritespriteWithSpriteFrameName:@”button-disabled.png“];
skinJoystick.thumbSprite=[CCSpritespriteWithSpriteFrameName:@”button-disabled.png“];
skinJoystick.thumbSprite.scale=0.5f;
skinJoystick.joystick=joystick;
skinJoystick.position=CGPointMake(skinJoystick.contentSize.width,
skinJoystick.contentSize.height);

[selfaddChild:skinJoystick];
}

-(void)update:(ccTime)delta
{
GameScene*scene=[GameScenesharedGameScene];
Ship*ship=(Ship*)[sceneship];
totalTime+=delta;

//点击按钮触发
if(fireButton.active&&totalTime>nextShootTime)
{
nextShootTime=totalTime+0.5f;
[sceneshootBullet: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）
CGPointvelocity=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http://code.google.com/p/ccjoystick/downloads/list）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=[CCJoyStickinitWithBallRadius:25MoveAreaRadius:65isFollowTouch:NOisCanVisible:YESisAutoHide:NOhasAnimation: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[myjoysticksetBallTexture:@”Ball.png”];//可选，不设置即看不见摇杆球
[myjoysticksetDockTexture:@”Dock.png”];//可选，不设置即看不见底座
[myjoysticksetStickTexture:@”Stick.jpg”];//可选，不设置即看不见连动杆
[myjoysticksetHitAreaWithRadius: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setHitAreaWithRect

myjoystick.position=ccp(100,100);
myjoystick.delegate=self;
[selfaddChild:myjoystick];该摇杆类包含3个事件：1、-(void)onCCJoyStickUpdate:(CCNode*)senderAngle:(float)angleDirection:(CGPoint)directionPower:(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@implementationOperateLayer
2
3-(id)init
4{
5if(self=[superinit])
6{
7winSize=[[CCDirectorsharedDirector]winSize];
8joystick=[CCJoyStickinitWithBallRadius:25
9MoveAreaRadius:65
10isFollowTouch:NO
11isCanVisible:YES
12isAutoHide:NO
13hasAnimation:YES];
14[joysticksetBallTexture:@”Ball.png“];
15[joysticksetDockTexture:@”Dock.png“];
16[joysticksetStickTexture:@”Stick.jpg“];
17[joysticksetHitAreaWithRadius:100];
18
19joystick.position=CGPointMake(100,100);
20[joysticksetDelegate:self];
21joystick.opacity=150;
22[selfaddChild:joystick];
23
24CCLabelTTF*label=[CCLabelTTFlabelWithString:@”shoot“fontName:@”Arial“fontSize:30];
25CCMenuItemLabel*shoot=[CCMenuItemLabelitemWithLabel:label
26target:self
27selector:@selector(shoot:)];
28CCMenu*shootMenu=[CCMenumenuWithItems:shoot,nil];
29shootMenu.position=CGPointMake(380,80);
30[selfaddChild:shootMenu];
31}
32returnself;
33}
34
35-(void)shoot:(CCMenuItem*)menuItem{
36GameScene*scene=[GameScenesharedGameScene];
37
38[sceneshootBullet:scene.ship];
39}
40-(void)onCCJoyStickUpdate:(CCNode*)senderAngle:(float)angleDirectio免费云主机域名n:(CGPoint)directionPower:(float)power
41{
42if(sender==joystick){
43NSLog(@”angle:%fpower:%fdirection:%f,%f“,angle,power,direction.x,direction.y);
44
45GameScene*scene=[GameScenesharedGameScene];
46
47floatnextx=scene.ship.position.x;
48floatnexty=scene.ship.position.y;
49
50nextx+=direction.x*(power*8);
51nexty+=direction.y*(power*8);
52
53scene.ship.position=ccp(nextx,nexty);
54}
55}
56
57-(void)onCCJoyStickActivated:(CCNode*)sender
58{
59if(sender==joystick){
60[joysticksetBallTexture:@”Ball_hl.png“];
61[joysticksetDockTexture:@”Dock_hl.png“];
62joystick.opacity=255;
63}
64}
65-(void)onCCJoyStickDeactivated:(CCNode*)sender
66{
67if(sender==joystick){
68[joysticksetBallTexture:@”Ball.png“];
69[joysticksetDockTexture:@”Dock.png“];
70joystick.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 ~/Files/xuling/CCJoystick.rar/Files/xuling/SneakyInput.rarps:咱新手们注意了哈,用最新的cocos2d时，看看AppDelegate.m 中的[glViewsetMultipleTouchEnabled: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 …

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