我已经安装了cocos2d v2.0,我正在努力工作,看看v1改变了什么,我创建了一个简单的cocos2d + box2d项目,我运行它,一切正常,我删除了IntroLayer和Helloworld Layer,我试图显示一个简单的背景图层,所以我这样做:
#import <Foundation/Foundation.h>
#import "cocos2d.h"
@interface BackgroundLayer : CCLayer
@end
#import "BackgroundLayer.h"
@implementation BackgroundLayer
-(id)init {
self = [super init];
if (self != nil) {
CCSprite *backgroundImage = [CCSprite spriteWithFile:@"background.png"];
CGSize screenSize = [[CCDirector sharedDirector] winSize];
backgroundImage.position = ccp(screenSize.width/2, screenSize.height/2);
[self addChild:backgroundImage z:0 tag:0];
}
return self;
}
@end
#import <Foundation/Foundation.h>
#import "cocos2d.h"
#import "BackgroundLayer.h"
@interface GameScene : CCScene
@end
#import "GameScene.h"
@implementation GameScene
-(id)init {
self = [super init];
if (self != nil) {
BackgroundLayer *backgroundLayer = [BackgroundLayer node];
[self addChild:backgroundLayer z:0];
}
return self;
}
@end
然后在app委托中我改变了这个:
[director_ pushScene: [IntroLayer scene]];
在此:
[director_ pushScene: [GameScene node]];
但似乎缩放了0.5,我创造了高清和非高清图像,对于视网膜而不是视网膜,我错了什么?这是结果:
http://img706.imageshack.us/img706/4778/schermata072456124alle1.png
修改 如果我以这种方式更改BackgroundLayer.m,一切正常:
@implementation BackgroundLayer
/*-(id)init {
self = [super init];
if (self != nil) {
CCSprite *backgroundImage = [CCSprite spriteWithFile:@"background.png"];
CGSize screenSize = [[CCDirector sharedDirector] winSize];
backgroundImage.position = ccp(screenSize.width/2, screenSize.height/2);
[self addChild:backgroundImage z:0 tag:0];
}
return self;
}*/
-(void) onEnter
{
[super onEnter];
CCSprite *backgroundImage = [CCSprite spriteWithFile:@"background.png"];
CGSize screenSize = [[CCDirector sharedDirector] winSize];
backgroundImage.position = ccp(screenSize.width/2, screenSize.height/2);
[self addChild:backgroundImage z:0 tag:0];
}
@end
谁能解释我为什么?我记得在旧版本的cocos2d中我可以在init方法中添加图层...
答案 0 :(得分:1)
使用此样式,也适用于cocos2d 2.0。
@interface GameScene : CCLayer
{
}
+(CCScene *) scene;
@end
#import "GameScene.h"
@implementation GameScene
+(CCScene *) scene
{
// 'scene' is an autorelease object.
CCScene *scene = [CCScene node];
// 'layer' is an autorelease object.
GameScene *gameScenelayer = [GameScene node];
// add layer as a child to scene
[scene addChild: gameScenelayer];
// return the scene
return scene;
}
-(id)init {
self = [super init];
if (self != nil) {
CCSprite *backgroundImage = [CCSprite spriteWithFile:@"background.png"];
CGSize screenSize = [[CCDirector sharedDirector] winSize];
backgroundImage.position = ccp(screenSize.width/2, screenSize.height/2);
[self addChild:backgroundImage z:0 tag:0];
}
return self;
}
@end
//调用此
[director_ pushScene: [GameScene scene]];