Question

所以我一直在研究我的cocos2d游戏一段时间，现在只使用一个静态的一帧精灵，因为我还没有得到完整spritesheet的图形。现在我有spritesheet，我在实现它时遇到了麻烦。

我目前制作“玩家”（精灵）的方式是拥有一个单独的玩家类，如下所示

Player.h

@interface Player : CCSprite{
CCAction *_WalkAction;
}
@property (nonatomic, assign) CCAction *WalkAction;
@property (nonatomic, assign) CGPoint velocity;
@property (nonatomic, assign) CGPoint desiredPosition;
@property (nonatomic, assign) BOOL onGround;
@property (nonatomic, assign) BOOL forwardMarch;
@property (nonatomic, assign) BOOL mightAsWellJump;
@property (nonatomic, assign) BOOL isGoingLeft;

-(void)update:(ccTime)dt;
-(CGRect)collisionBoundingBox;

@end

和Player.m（我不会展示完整的东西，因为它很长，它只是定义了角色的所有内容）

-(id)initWithFile:(NSString *)filename {
if (self = [super initWithFile:filename]) {
    self.velocity = ccp(0.0, 0.0);
}
return self;
}

  //THIS IS ONLY A FRACTION OF MY UPDATE METHOD, THE REST OF IT IS ALL SETTING VELOCITY AND WHATNOT FOR MY PHYSICS ENGINE, BUT THIS IS THE ONLY RELEVANT PART
-(void)update:(ccTime)dt {
if (self.forwardMarch) {
        self.velocity = ccpAdd(self.velocity, forwardStep);
 //[self runAction: _WalkAction];
    }    
}

现在在我的GameLevelLayer.m中我像这样初始化精灵（这是我们从player.m中的init获取文件名的地方）：

//In my init
map = [[CCTMXTiledMap alloc] initWithTMXFile:@"level1.tmx"];
    [self addChild:map];

 player = [[Player alloc] initWithFile:@"banker1.png"];
    player.position = ccp(100, 50);
    [map addChild:player z:15];

这样一切都运行得很好。当我尝试将精灵变成带spritesheet的精灵时，就会出现问题。所以我尝试在player.m

中这样做

-(id)initWithFile:(NSString *)filename {
if (self = [super initWithFile:filename]) {

    self.velocity = ccp(0.0, 0.0);

    [[CCSpriteFrameCache sharedSpriteFrameCache] addSpriteFramesWithFile: @"BankerSpriteSheet_default.plist"];

    CCSpriteBatchNode *spriteSheet = [CCSpriteBatchNode batchNodeWithFile:@"BankerSpriteSheet_default.png"];
    [self addChild:spriteSheet];

    NSMutableArray *walkAnimFrames = [NSMutableArray array];
    for(int i = 1; i <=6; ++i) {
        [walkAnimFrames addObject: [[CCSpriteFrameCache sharedSpriteFrameCache] spriteFrameByName: [NSString stringWithFormat:@"banker%d.png", i]]];

        CCAnimation *walkAnim = [CCAnimation animationWithFrames:walkAnimFrames delay:0.1f];
        self = [CCSprite spriteWithSpriteFrameName:@"banker1.png"];

//HERE IS WHERE self.WalkAction IS DEFINED

        self.WalkAction = [CCRepeatForever actionWithAction:[CCAnimate actionWithAnimation:walkAnim restoreOriginalFrame:NO]];
        [spriteSheet addChild:self];
    }

}
return self;
}

//And then run it in my update method

if (self.forwardMarch) {
        self.velocity = ccpAdd(self.velocity, forwardStep);
    [self runAction: _WalkAction];

}

仅供参考，self.forwardMarch是每次用户按下按钮移动玩家时设置的bool，所以无论什么时候我都按这样移动玩家。

但是当我尝试这个时，我得到了错误

'NSInvalidArgumentException', reason: '-[CCSprite setWalkAction:]: unrecognized selector sent to instance 0x88fab50'

感谢任何帮助。

我还在cocos2d论坛上发布了这个，如果你更喜欢他们的代码显示系统（颜色编码和诸如此类） http://www.cocos2d-iphone.org/forums/topic/making-spritesheets-work/

修改的

好的，所以我取得了一些进展，但我仍然有点陷入困境。我已经在GameLevelLayer.m的初始化中定义了batchnodes和所有动作

[[CCSpriteFrameCache sharedSpriteFrameCache] addSpriteFramesWithFile: @"BankerSpriteSheet_default.plist"];

    CCSpriteBatchNode *spriteSheet = [CCSpriteBatchNode batchNodeWithFile:@"BankerSpriteSheet_default.png"];
    [self addChild:spriteSheet];
    [player addChild:spriteSheet];

    NSMutableArray *walkAnimFrames = [NSMutableArray array];
    for(int i = 1; i <=6; ++i) {
        [walkAnimFrames addObject: [[CCSpriteFrameCache sharedSpriteFrameCache] spriteFrameByName: [NSString stringWithFormat:@"banker%d.png", i]]];

        CCAnimation *walkAnim = [CCAnimation animationWithFrames:walkAnimFrames delay:0.1f];
        player = [[Player alloc] initWithSpriteFrameName:@"banker1.png"];
        player.WalkAction = [CCRepeatForever actionWithAction:[CCAnimate actionWithAnimation:walkAnim restoreOriginalFrame:NO]];
        //[spriteSheet addChild:player];
    }

    //player = [[Player alloc] initWithFile:@"koalio_stand.png"];
    player.position = ccp(100, 50);
    player.scale = 0.2;
    [map addChild:player z:15];

然后在我的Player.m中运行

[self runAction: self.WalkAction];
//I've also tried [self runAction: _WalkAction]; The result is the same

我使用NSLogs来发现上面的部分（[self runAction：self.WalkAction];正在被调用但没有完成。这是我的崩溃发生的地方，但是控制台没有输出为什么有崩溃..字面上只是说（lldb）

Answer 1

问题是在实际错误之上一行。您使用[CCSprite spriteWith ...]中的结果为self分配，该结果替换现有的self并将其替换为CCSprite。而是将init行更改为self = [super initWithSpriteFrameName：..]

使SpriteSheets工作cocos2d

1 个答案: