Cocos2D将v1.0的tileMap游戏转换到v3.4中一例(二)

大熊猫猪·侯佩原创或翻译作品.欢迎转载,转载请注明出处.

如果觉得写的不好请告诉我,如果觉得不错请多多支持点赞.谢谢! hopy ;)

首先在CatMazeV3中新建CatSprite类,继承于Sprite.其中CatSprite.h文件如下所示:

#import "CCSprite.h"

@class MainScene;

@interface CatSprite : CCSprite

@property (nonatomic,assign,readonly) NSInteger numBones;

-(id)initWithMainScene:(MainScene*)mainScene;
-(void)moveToward:(CGPoint)targetLocation;
-(void)moveTowardOneTile:(CGPoint)location;

@end

和原代码不同的是我将很多实例变量放到了实现m文件中去,所以感觉清爽了不少.同时原来numBones属性在新的Xcode代码中,也不需要再次重新合成了(synthesize).

再看CatSprite.m文件的内容,先是实例变量声明:

@implementation CatSprite{
MainScene *_mainScene;
CCAnimation *_facingForwardAnimation;
CCAnimation *_facingBackAnimation;
CCAnimation *_facingLeftAnimation;
CCAnimation *_facingRightAnimation;
CCAnimation *_curAnimation;
CCActionMoveTo *_move;
CCActionAnimate *_curAnimate;
}

注意原来的CCMoveTo和CCAnimate类现在已经不存在了,遂替换为如上所示新的类.

接下来是一些帮助方法和导出方法,没有什么大的改动:

-(id)initWithMainScene:(MainScene *)mainScene{
self = [super initWithImageNamed:@"cat_forward_1.png"];
if (self) {
_mainScene = mainScene;
_facingForwardAnimation = [self createCatAnimation:@"forward"];
_facingBackAnimation = [self createCatAnimation:@"back"];
_facingLeftAnimation = [self createCatAnimation:@"left"];
_facingRightAnimation = [self createCatAnimation:@"right"];
}
return self;
}

-(void)runAnimation:(CCAnimation*)animation{
if (_curAnimation == animation) {
return;
}

_curAnimation = animation;
if (_curAnimate) {
[self stopAction:_curAnimate];
}

_curAnimate = [CCActionRepeatForever actionWithAction:
[CCActionAnimate actionWithAnimation:animation]];
[self runAction:_curAnimate];
}

-(CCAnimation*)createCatAnimation:(NSString*)animType{
CCAnimation *animation = [CCAnimation animation];
CCSpriteFrameCache *sfCache = [CCSpriteFrameCache sharedSpriteFrameCache];
for (int i = 1; i <= 2; ++i) {
[animation addSpriteFrame:[sfCache spriteFrameByName:[NSString stringWithFormat:
@"cat_%@_%d.png",animType,i]]];
}
animation.delayPerUnit = 0.2;
return animation;
}

注意原来的-(id)initWithLayer:(HelloWorldLayer *)layer方法名称完全改了,因为Layer在v3.4中整个被丢弃了,大家可以看到我写的新的实现,和原来的差不多.

其他的方法中,只是实例变量名和类名发生的变化.我们将在下一篇看如何尝试转换最复杂的moveToward方法.