ccjoystick 代码 （学习 ）

.h

#import <Foundation/Foundation.h>#import "cocos2d.h"@protocol CCJoyStickDelegate <NSObject>@optional- (void) onCCJoyStickUpdate:(CCNode*)sender Angle:(float)angle Direction:(CGPoint)direction Power:(float)power;- (void) onCCJoyStickActivated:(CCNode*)sender;- (void) onCCJoyStickDeactivated:(CCNode*)sender;@end@interface CCJoyStick : CCSprite<CCTargetedTouchDelegate> {CCSprite*Ball;CCSprite*Stick;CCSprite*Dock;BooleanisFollowTouch;BooleanisCanVisible;BooleanisAutoHide;BooleanhasAnimation;intMoveAreaRadius;intBallRadius;CGRectActiveRect;intActiveRadius;CGPointcurrentPoint;BooleanisTouched;floatpower;CGPointdirection;floatangle;id<CCJoyStickDelegate> delegate;}@property(readonly,retain)CCSprite*Ball;@property(readonly,retain)CCSprite*Stick;@property(readonly,retain)CCSprite*Dock;@property(nonatomic,readonly)intMoveAreaRadius;@property(nonatomic,readonly)intBallRadius;@property(nonatomic,readonly)CGRectActiveRect;@property(nonatomic,readonly)intActiveRadius;@property(nonatomic,readonly)CGPointcurrentPoint;@property(nonatomic,readonly)BooleanisTouched;@property(nonatomic,readonly)BooleanhasAnimation;@property(nonatomic,readonly)floatpower;@property(nonatomic,readonly)floatangle;@property(nonatomic,readonly)CGPointdirection;@property (nonatomic, assign) id<CCJoyStickDelegate> delegate;+(id)initWithBallRadius:(int)ballradius MoveAreaRadius:(int)movearearadius isFollowTouch:(Boolean)isfollowtouch isCanVisible:(Boolean)iscanvisible isAutoHide:(Boolean)isautohide hasAnimation:(Boolean)hasanimation;-(id)initWithBallRadius:(int)ballradius MoveAreaRadius:(int)movearearadius isFollowTouch:(Boolean)isfollowtouch isCanVisible:(Boolean)iscanvisible isAutoHide:(Boolean)isautohide hasAnimation:(Boolean)hasanimation;-(void)setBallTexture:(NSString *)imageName;-(void)setStickTexture:(NSString *)imageName;-(void)setDockTexture:(NSString *)imageName;-(void)setHitAreaWithRadius:(int)radius;-(void)setHitAreaWithRect:(CGRect)rect;-(void)startTimer;-(void)stopTimer;-(void)timerUpdate;-(void)onTouchBegan:(CGPoint)touchPoint;-(void)resetTexturePosition;- (BOOL)containsTouchLocation:(UITouch *)touch ;-(void)updateTouchPoint:(CGPoint)touchPoint;@end

.m

#import "CCJoyStick.h"#import "cocos2d.h"@implementation CCJoyStick@synthesize Ball;@synthesize Stick;@synthesize Dock;@synthesize BallRadius;@synthesize MoveAreaRadius;@synthesize ActiveRect;@synthesize ActiveRadius;@synthesizecurrentPoint;@synthesizeisTouched;@synthesize power;@synthesize angle;@synthesize delegate;@synthesizedirection;@synthesizehasAnimation;-(id)initWithBallRadius:(int)ballradius MoveAreaRadius:(int)movearearadius isFollowTouch:(Boolean)isfollowtouch isCanVisible:(Boolean)iscanvisible isAutoHide:(Boolean)isautohide hasAnimation:(Boolean)hasanimation{if( (self=[super init] )) {BallRadius=ballradius;MoveAreaRadius=movearearadius;isFollowTouch=isfollowtouch;isCanVisible=iscanvisible;isAutoHide=isautohide;hasAnimation=hasanimation;power=0;angle=0;CGSize size = [[CCDirector sharedDirector] winSize];[self setHitAreaWithRect:CGRectMake(0, 0, size.width/2, size.height)];Ball=[[CCSprite alloc] init];Stick=[[CCSprite alloc] init];Dock=[[CCSprite alloc] init];[self addChild:Dock];[self addChild:Stick];[self addChild:Ball];if(!isCanVisible){[self setVisible:NO];}else {if (isAutoHide) {[self setVisible:NO];}}}return self;}- (void) onEnter  {      [[CCTouchDispatcher sharedDispatcher] addTargetedDelegate:self priority:0 swallowsTouches:YES];      [super onEnter];  }  - (void) onExit  {      [[CCTouchDispatcher sharedDispatcher] removeDelegate:self];      [super onExit];  }  +(id)initWithBallRadius:(int)ballradius MoveAreaRadius:(int)movearearadius isFollowTouch:(Boolean)isfollowtouch isCanVisible:(Boolean)iscanvisible isAutoHide:(Boolean)isautohide hasAnimation:(Boolean)hasanimation{return [[self alloc] initWithBallRadius:ballradius MoveAreaRadius:movearearadius isFollowTouch:isfollowtouch isCanVisible:iscanvisible isAutoHide:isautohide hasAnimation:hasanimation];}- (BOOL)ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event  {      if ( ![self containsTouchLocation:touch] )    {          return NO;    }  CGPoint touchPoint = [touch locationInView:[touch view]];touchPoint = [[CCDirector sharedDirector] convertToGL:touchPoint];[self onTouchBegan:touchPoint];return YES;}-(void)onTouchBegan:(CGPoint)touchPoint{currentPoint = touchPoint;isTouched=YES;if(isAutoHide && isCanVisible){[self setVisible:YES];}if(isFollowTouch){self.position=ccp(touchPoint.x,touchPoint.y);}[Ball stopAllActions];[self updateTouchPoint:touchPoint];[self startTimer];}-(void)updateTouchPoint:(CGPoint)touchPoint{CGPoint selfposition=[self.parent convertToWorldSpace:self.position];if (ccpDistance(touchPoint, ccp(selfposition.x,selfposition.y)) > (MoveAreaRadius-BallRadius)){currentPoint =ccpAdd(ccp(0,0),ccpMult(ccpNormalize(ccpSub(ccp(touchPoint.x-selfposition.x,touchPoint.y-selfposition.y), ccp(0,0))), MoveAreaRadius-BallRadius));}else {currentPoint = ccp(touchPoint.x-selfposition.x,touchPoint.y-selfposition.y);}Ball.position=currentPoint;angle=atan2(Ball.position.y-0, Ball.position.x-0)/(3.14159/180);power=ccpDistance(Ball.position, ccp(0,0))/(MoveAreaRadius-BallRadius);direction=ccp(cos(angle * (3.14159/180)),sin(angle * (3.14159/180)));CCSprite *sticktexture=(CCSprite*)[Stick getChildByTag:0];Stick.scaleX=ccpDistance(Ball.position, ccp(0,0))/sticktexture.textureRect.size.width;Stick.rotation=-angle;}- (void)ccTouchMoved:(UITouch *)touch withEvent:(UIEvent *)event  {  CGPoint touchPoint = [touch locationInView:[touch view]];touchPoint = [[CCDirector sharedDirector] convertToGL:touchPoint];if (isTouched) {[self updateTouchPoint:touchPoint];}}-(void)ccTouchEnded:(UITouch *)touch withEvent:(UIEvent *)event  {if (isTouched) {if(isAutoHide && isCanVisible){[self setVisible:NO];}isTouched=NO;[self stopTimer];[self resetTexturePosition];}}- (BOOL)containsTouchLocation:(UITouch *)touch  {  CGPoint touchPoint = [touch locationInView:[touch view]];touchPoint = [[CCDirector sharedDirector] convertToGL:touchPoint];if (ActiveRadius>0){if (ccpDistance(touchPoint, [self.parent convertToWorldSpace:ccp(self.position.x,self.position.y)]) < ActiveRadius) {return YES;}}if(ActiveRect.size.width>0 && ActiveRect.size.height>0){if (touchPoint.x>ActiveRect.origin.x && touchPoint.x<ActiveRect.origin.x+ActiveRect.size.width && touchPoint.y>ActiveRect.origin.y && touchPoint.y<ActiveRect.origin.y+ActiveRect.size.height) {return YES;}}return NO;} -(void)resetTexturePosition{power=0;angle=0;currentPoint=ccp(0,0);Stick.position=ccp(0,0);Stick.scaleX=power;if (!isAutoHide && isCanVisible && hasAnimation) {id action = [CCMoveTo actionWithDuration:.5 position:ccp(0,0)];[Ball runAction:[CCEaseElasticOut actionWithAction:action]];}else {Ball.position=ccp(0,0);}}-(void)startTimer{if ((self.delegate != NULL) && [self.delegate respondsToSelector:@selector(onCCJoyStickActivated:)]) {[delegate onCCJoyStickActivated:self];}[self schedule:@selector(timerUpdate)];}-(void)stopTimer{if ((self.delegate != NULL) && [self.delegate respondsToSelector:@selector(onCCJoyStickDeactivated:)]) {[delegate onCCJoyStickDeactivated:self];}[self unschedule:@selector(timerUpdate)];}-(void)timerUpdate{if ((self.delegate != NULL) && [self.delegate respondsToSelector:@selector(onCCJoyStickUpdate:Angle:Direction:Power:)]) {[delegate onCCJoyStickUpdate:self Angle:angle Direction:direction Power:power];}}-(void)setBallTexture:(NSString *)imageName{[Ball removeAllChildrenWithCleanup:TRUE];CCSprite *balltexture=[CCSprite spriteWithFile:imageName];[Ball addChild:balltexture];}-(void)setStickTexture:(NSString *)imageName{[Stick removeAllChildrenWithCleanup:TRUE];CCSprite *sticktexture=[CCSprite spriteWithFile:imageName];sticktexture.position=ccp(sticktexture.contentSize.width/2,0);[Stick addChild:sticktexture z:0 tag:0];Stick.scaleX=ccpDistance(Ball.position, ccp(0,0))/sticktexture.textureRect.size.width;}-(void)setDockTexture:(NSString *)imageName{[Dock removeAllChildrenWithCleanup:TRUE];CCSprite *docktexture=[CCSprite spriteWithFile:imageName];[Dock addChild:docktexture];}-(void)setHitAreaWithRadius:(int)radius{ActiveRect=CGRectMake(0, 0, 0, 0);ActiveRadius=radius;}-(void)setHitAreaWithRect:(CGRect)rect{ActiveRect=rect;ActiveRadius=0;}// on "dealloc" you need to release all your retained objects- (void) dealloc{[super dealloc];[Ball release];[Stick release];[Dock release];delegate = nil;[delegaterelease];}@end