【麦可网】Cocos2d-X跨平台游戏开发---学习笔记
第二十二课：Cocos2D-X地图系统1-8
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课程目标：
-学习Cocos2D-X的地图系统
课程重点：
-地图编辑器的使用
-Cocos2D-X中的地图系统
考核目标：
-能够用地图编辑器编辑不同类型的地图
-能在Cocos2D-X中使用地图编辑器编辑出的地图
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一、两种不同类型的地图
二、地图载入
CCTMXTiledMap* mapTile = CCTMXTiledMap::create("desert.tmx");
this->addChild(mapTile);
三、动态更新
CCNode::reorderChild(CCNode *child,int zOrder);
四、例子
bool HelloMap::init()
{
//////////////////////////////
// 1. super init first
if ( !CCLayer::init() )
{
return false;
}
CCSize screenSize = CCDirector::sharedDirector()->getWinSize();
mapTile = CCTMXTiledMap::create("map_desert.tmx");
mapTile->setPosition(CCPointZero);
this->addChild(mapTile);
//SpinningPeas.png
sprite = CCSprite::create("SpinningPeas.png");
sprite->setPosition(ccp( SPR_WIDTH/2,SPR_HEIGHT/2));
mapTile->addChild(sprite);
CCMenuItemFont* upMenuItem = CCMenuItemFont::create("UP",this,menu_selector(HelloMap::menuCallback));
CCMenuItemFont* downMenuItem = CCMenuItemFont::create("DOWN",menu_selector(HelloMap::menuCallback));
CCMenuItemFont* leftMenuItem = CCMenuItemFont::create("LEFT",menu_selector(HelloMap::menuCallback));
CCMenuItemFont* rightMenuItem = CCMenuItemFont::create("RIGHT",menu_selector(HelloMap::menuCallback));
CCMenuItemFont* updateMenuItem = CCMenuItemFont::create("UPDATE",menu_selector(HelloMap::menuCallback));
CCMenu* menu = CCMenu::create(upMenuItem,downMenuItem,leftMenuItem,rightMenuItem,updateMenuItem,NULL);
menu->setPosition(CCPointZero);
this->addChild(menu);
CCLOG("height=%f",screenSize.height);
CCLOG("width=%f",screenSize.width);
upMenuItem->setPosition(ccp(screenSize.width/2,screenSize.height-40));
downMenuItem->setPosition(ccp(screenSize.width/2,40));
leftMenuItem->setPosition(ccp(40,screenSize.height/2));
rightMenuItem->setPosition(ccp(screenSize.width-40,screenSize.height/2));
updateMenuItem->setPosition(ccp(screenSize.width/2,screenSize.height/2));
upMenuItem->setTag(TAG_UP);
downMenuItem->setTag(TAG_DOWN);
leftMenuItem->setTag(TAG_LEFT);
rightMenuItem->setTag(TAG_RIGHT);
updateMenuItem->setTag(TAG_UPDATE);
return true;
}
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UP、DOWN、LEFT、RIGHT、UPDATE对应的回调函数
void HelloMap::menuCallback(CCObject* pSender)
{
//获取屏幕尺寸
CCSize screenSize = CCDirector::sharedDirector()->getWinSize();
//获得菜单项标记
CCMenuItem* item = (CCMenuItem*)pSender;
int tag = item->getTag();
//获得当前位置和要移动的下个位置
CCPoint spriteCurPos = ccp( (int)(sprite->getPositionX()/SPR_WIDTH),mapTile->getMapSize().height-1 - (int)(sprite->getPositionY()/SPR_HEIGHT) );
CCPoint spriteNextPos = spriteCurPos;
CCPoint flagPos = CCPointZero;
//获取图层
CCTMXLayer* layer2 = mapTile->layerNamed("layer2");
int gID = 0;
switch(tag)
{
//上移动
case TAG_UP:
//越界返回
spriteNextPos.y -= 1;
if (spriteNextPos.y < 0) return;
//碰撞检测
gID = layer2->tileGIDAt(spriteNextPos);
if (gID) return;
//移动地图和精灵
//1.如果 地图高度+地图Y位置 > 屏幕高度 （精灵Y位置 > 地图高度/2 滚屏,否则只 移动精灵)。
//2. 不满足1且精灵Y位置 < 地图高度 移动精灵
if ( mapTile->getContentSize().height + mapTile->getPositionY() > screenSize.height + SPR_HEIGHT)
{
if (sprite->getPositionY() > screenSize.height/2)
{
mapTile->setPositionY(mapTile->getPositionY() - SPR_HEIGHT);
}
sprite->setPosition(ccp( sprite->getPositionX(),sprite->getPositionY()+SPR_HEIGHT));
}
else if (sprite->getPositionY() < mapTile->getContentSize().height-SPR_HEIGHT)
{
sprite->setPosition(ccp( sprite->getPositionX(),sprite->getPositionY()+SPR_HEIGHT));
}
break;
case TAG_DOWN:
spriteNextPos.y += 1;
if (spriteNextPos.y > mapTile->getMapSize().height-1) return;
gID = layer2->tileGIDAt(spriteNextPos);
if (gID) return;
if (mapTile->getPositionY() < 0)
{
if (sprite->getPositionY() < mapTile->getContentSize().height - screenSize.height/2)
{
mapTile->setPositionY(mapTile->getPositionY() + SPR_HEIGHT);
}
sprite->setPosition(ccp( sprite->getPositionX(),sprite->getPositionY()-SPR_HEIGHT));
}
else if (sprite->getPositionY() > SPR_HEIGHT)
{
sprite->setPosition(ccp( sprite->getPositionX(),sprite->getPositionY()-SPR_HEIGHT));
}
break;
case TAG_LEFT:
spriteNextPos.x -= 1;
if (spriteNextPos.x < 0) return;
gID = layer2->tileGIDAt(spriteNextPos);
if (gID) return;
if (mapTile->getPositionX() < 0)
{
if (sprite->getPositionX() < mapTile->getContentSize().width - screenSize.width/2)
{
mapTile->setPositionX(mapTile->getPositionX() + SPR_WIDTH);
}
sprite->setPosition(ccp( sprite->getPositionX()-SPR_WIDTH,sprite->getPositionY()));
}
else if (sprite->getPositionX() > SPR_WIDTH)
{
sprite->setPosition(ccp( sprite->getPositionX()-SPR_WIDTH,sprite->getPositionY()));
}
break;
case TAG_RIGHT:
spriteNextPos.x += 1;
if (spriteNextPos.x > mapTile->getMapSize().width-1 ) return;
gID = layer2->tileGIDAt(spriteNextPos);
if (gID) return;
if ( mapTile->getContentSize().width + mapTile->getPositionX() > screenSize.width + SPR_HEIGHT)
{
if (sprite->getPositionX() > screenSize.width/2)
{
mapTile->setPositionX(mapTile->getPositionX() - SPR_WIDTH);
}
sprite->setPosition(ccp( sprite->getPositionX()+SPR_WIDTH,sprite->getPositionY()));
}
else if (sprite->getPositionX() < mapTile->getContentSize().width-SPR_WIDTH)
{
sprite->setPosition(ccp( sprite->getPositionX()+SPR_WIDTH,sprite->getPositionY()));
}
break;
case TAG_UPDATE:
//动态更新
flagPos.x = spriteCurPos.x + 1;
flagPos.y = spriteCurPos.y;
layer2->setTileGID(46,flagPos);
break;
}
}
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总结：
这一课有趣，有地图有角色啦。
开心一刻：
有两个神经病患.从病院里逃出来.
两人跑啊跑.爬到一棵树上.
其中一个人从树上跳下来.
滚啊滚的.
然後抬起头对上面的人说:喂------你怎么还不下来啊---------?
上面的那个人回答他:不---行---啊------
我还没有熟-----------
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【麦可网】Cocos2d-X跨平台游戏开发---教程下载:http://pan.baidu.com/s/1kTio1Av
【麦可网】Cocos2d-X跨平台游戏开发---笔记系列:http://blog.csdn.net/qiulanzhu
