cocos2d(CCSprite绑定不规则刚体与精灵一起移动)

对于不规则的精灵我们可以借助PhysicsEditor来制作shape ，

对于地图可以使用Tiled软件制作瓷砖地图。

今天主要记录一下如何把CCSprite与不规则刚体进行绑定，然后一起移动

//初始化玩家

1.加载shape文件，在init方法中添加：

//加载shape文件
        [[GB2ShapeCache sharedShapeCache] addShapesWithFile:@"physicShape.plist"];

.plist文件内容大体如下：

	
        metadata
        
            format
            1
            ptm_ratio
            32
        
        bodies
		

			Player1
			
				anchorpoint
                { 0.0000,0.0000 }
				fixtures
				

					
                        density 2
                        friction 0
                        restitution 0
                        filter_categoryBits 1
                        filter_groupIndex 0
                        filter_maskBits 65535
                        isSensor 
                        id 
                        fixture_type POLYGON

						polygons
						
								
								{ 1.000,0.000 }	
								{ 32.000,0.000 }	
								{ 27.000,32.000 }	
								{ 7.000,32.000 }
							
						
                    
				
			
			RetroCoin
			
				anchorpoint
                { 0.0000,0.0000 }
				fixtures
				

					
                        density 2
                        friction 0
                        restitution 0
                        filter_categoryBits 1
                        filter_groupIndex 0
                        filter_maskBits 65535
                        isSensor 
                        id 
                        fixture_type POLYGON

						polygons
						
								
								{ 4.000,3.000 }	
								{ 17.000,0.000 }	
								{ 28.000,3.000 }	
								{ 28.000,28.000 }	
								{ 16.000,32.000 }	
								{ 4.000,28.000 }
							
						
                    
				
			
		
	

2.初始化精灵和刚体及夹具

#pragma mark 初始化玩家
-(void)initPlayer{
    //创建对象层 获得对象的产生点
    CCTMXObjectGroup *objects=[_gameMap objectGroupNamed:@"objects"];
    NSMutableDictionary *spawnPoint=[objects objectNamed:@"StartPoint"];
     //获得出生点坐标
    float x=[[spawnPoint valueForKey:@"x"] floatValue];
    float y=[[spawnPoint valueForKey:@"y"] floatValue];
    _player=[CCSprite spriteWithFile:@"Player1.png"];
    _player.position=ccp(x,y);
    _player.anchorPoint=CGPointZero;   //设置描点为0，0  否则与刚体不能重合
    b2BodyDef playerBodyDef;           //定义刚体结构体的定义
    [self addChild:_player];
    
    playerBodyDef.type=b2_dynamicBody;
    playerBodyDef.fixedRotation=true;   //不会旋转
    playerBodyDef.position.Set(x/PTM_RATIO, y/PTM_RATIO);
    
    _playBody=world->CreateBody(&playerBodyDef);
    _playBody->SetUserData(_player);
    [[GB2ShapeCache sharedShapeCache] addFixturesToBody:_playBody forShapeName:@"Player1"];  //为刚体设置夹具
   
}

3.在update函数中添加更新位置方法

for(b2Body *b = world->GetBodyList(); b; b=b->GetNext()) {
        
        
        if (b->GetUserData() != NULL) {
            CCSprite *sprite = (CCSprite *)b->GetUserData(); //获得精灵对象
            if (sprite != nil) {
                b2Vec2 bodyPos = b->GetPosition();  //获得刚体的位置
                CGPoint pos = CGPointMake(bodyPos.x * PTM_RATIO, bodyPos.y * PTM_RATIO);  //变换为坐标
                float32 rotation = -1 * CC_RADIANS_TO_DEGREES(b->GetAngle());
                sprite.position = pos;
                sprite.rotation = rotation;
            }
        }
    }

效果图：

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转载于:https://www.cnblogs.com/lixingle/p/3707688.html