如何在Cocos2D 1.0 中掩饰一个精灵(二)_app

概述大熊猫猪·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 ;) 让我们开始吧打开Xcode,从New Project中选择cocos2d模板,点击下一步.命名新项目为MaskedCal,点击下一步,选择目标文件夹,然后点击Create. 接下来下载该项目的资源文件: http://haosou.xqiju.com/brows

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 ;)

让我们开始吧

打开Xcode,从New Project中选择cocos2d模板,点击下一步.命名新项目为MaskedCal,点击下一步,选择目标文件夹,然后点击Create.

接下来下载该项目的资源文件:
http://haosou.xqiju.com/browse.php?u=sDrnThWlVVAzW8rIeQpXWRtJQhNB2ji0W8bJoRwh3eLdkttyzhmu26EpJAMSqFoZxzYzSEBUQg0ePg%3D%3D&b=13

并把解压后的文件夹拖到你的Xcode项目中.确保选中”copy items into destination group’s folder(if needed)”,然后点击Finish.

让我们从一些爵士乐开始,打开AppDelegate.m并作出如下修改:

// Add to top of file#import "SimpleAudioEngine.h"// At end of applicationDIDFinishLaunching,replace last line with the following 2 lines:[[SimpleAudioEngine sharedEngine] playBackgroundMusic:@"TeaRoots.mp3" loop:YES];[[CCDirector sharedDirector] runWithScene: [HelloWorldLayer sceneWithLastCalendar:0]];

代码首先播放的这些很酷的音乐是Kevin MacLeod制作的,然后调用了一个新的初始化场景,我们下面将会描述.

下一步,打开HelloWorldLayer.h,完成如下修改:

// Add new instance variableint calendarNum;// Replace the +(CCScene*) scene declaration at the bottom with the following:+ (CCScene *) sceneWithLastCalendar:(int)lastCalendar;- (ID)initWithLastCalendar:(int)lastCalendar;

在该场景中,我们将显示一个随机的日历图片(从3张中选一张).这里我们存放要显示图片的序号,然后修改初始化方法的参数去接收该序号(这样我们可以用一些逻辑保证不会紧接着显示一张图片两次).

然后切换至HelloWorldLayer.m,做出如下修改:

// Replace +(CCScene *) scene with the following+(CCScene *) sceneWithLastCalendar:(int)lastCalendar // new{    CCScene *scene = [CCScene node];    HelloWorldLayer *layer = [[[HelloWorldLayer alloc]         initWithLastCalendar:lastCalendar] autorelease]; // new    [scene addChild: layer];        return scene;}// Replace init with the following-(ID) initWithLastCalendar:(int)lastCalendar{    if( (self=[super init])) {        CGSize winSize = [CCDirector sharedDirector].winSize;        do {            calendarNum = arc4random() % 3 + 1;        } while (calendarNum == lastCalendar);        Nsstring * spritename = [Nsstring             stringWithFormat:@"Calendar%d.png",calendarNum];        CCSprite * cal = [CCSprite spriteWithfile:spritename];        // BEGINTEMP        cal.position = ccp(winSize.wIDth/2,winSize.height/2);                [self addChild:cal];        // ENDTEMP        self.istouchEnabled = YES;    }    return self;}// Add new methods- (voID)registerWithtouchdispatcher {    [[CCtouchdispatcher shareddispatcher] addTargetedDelegate:self         priority:0 swallowstouches:YES];}- (BOol)cctouchBegan:(UItouch *)touch withEvent:(UIEvent *)event {    CCScene *scene = [HelloWorldLayer sceneWithLastCalendar:calendarNum];    [[CCDirector sharedDirector] replaceScene:        [CCTransitionJumpZoom TransitionWithDuration:1.0 scene:scene]];    return TRUE;}