有时候游戏中要用到一些特殊的字体效果,特别是数字。
CCLabelAtlas就可以从png图中读取文字。
CCLabelAtlas* diceCount=CCLabelAtlas::labelWithString("1:", "nums_font.png", 14, 21, '0');
第一个参数:显示的内容:1x,你也许会奇怪为什么是1x,因为使用的png图必须是连续的,因为程序内部是议连续的scall码识别的。9的后一位的”:“,所以先实现x就得用”:“代替。
第二个参数:图片的名字
第三个参数:每一个数字的宽
第四个参数:每一个数字的高
每五个数字:开始字符
以前看过这样一个例子 也不错 完全通过代码实现的
研究了一下 找不到任何显示多位数的规律还是plist 万岁啊!
+(CCRenderTexture*) createStroke: (CCLabelTTF*) label size:(float)size color:(ccColor3B)cor
{
CCRenderTexture* rt = [CCRenderTexture renderTextureWithWidth:label.texture.contentSize.width+size*2 height:label.texture.contentSize.height+size*2];
CGPoint originalPos = [label position];
ccColor3B originalColor = [label color];
BOOL originalVisibility = [label visible];
[label setColor:cor];
[label setVisible:YES];
ccBlendFunc originalBlend = [label blendFunc];
[label setBlendFunc:(ccBlendFunc) { GL_SRC_ALPHA,GL_ONE }];
CGPoint bottomLeft =ccp(label.texture.contentSize.width * label.anchorPoint.x + size, label.texture.contentSize.height * label.anchorPoint.y + size);
CGPoint positionOffset =ccp(label.texture.contentSize.width * label.anchorPoint.x - label.texture.contentSize.width/2,label.texture.contentSize.height * label.anchorPoint.y - label.texture.contentSize.height/2);
CGPoint position = ccpSub(originalPos, positionOffset);
[rt begin];
for (int i=0; i<</span>360; i+=30) // you should optimize that for your needs
{
[label setPosition:ccp(bottomLeft.x + sin(CC_DEGREES_TO_RADIANS(i))*size, bottomLeft.y + cos(CC_DEGREES_TO_RADIANS(i))*size)];
[label visit];
}
[rt end];
[label setPosition:originalPos];
[label setColor:originalColor];
[label setBlendFunc:originalBlend];
[label setVisible:originalVisibility];
[rt setPosition:position];
return rt;
}
CCLabelTTF *label = [CCLabelTTF labelWithString:@"Hello World" fontName:@"Marker Felt" fontSize:64];
// ask director the the window size
CGSize size = [[CCDirector sharedDirector] winSize];
// position the label on the center of the screen
label.position = ccp( size.width /2 , size.height/2 );
// add the label as a child to this Layer
[label setColor:ccYELLOW];
CCRenderTexture *stroke=[SomeUtilityClass createStroke:label size:3 color:ccBLACK];
[self addChild:stroke];
[self addChild:label];