Cocos2d:错误从Cocos2d :: Valuemap到Cocos2d :: CCdictionary的转换函数不存在 [英] Cocos2d: error no suitable conversion function from Cocos2d::Valuemap to Cocos2d::CCdictionary existis

问题描述

我正在关注这个关于在游戏中实现图块贴图的精彩教程 http://www.raywenderlich.com/39113/cocos2d-x-tile-map-tutorial-part-1

I'm following this amazing tutorial about implementing tilemaps in my game http://www.raywenderlich.com/39113/cocos2d-x-tile-map-tutorial-part-1

http://www.raywenderlich.com/40544/cocos2d-x-tile-map-tutorial-part-2

但是当我明白这一点时:

But when i get to this:

CCTMXObjectGroup *objectGroup = _tileMap->objectGroupNamed("Objects");

if(objectGroup == NULL){
    CCLog("tile map has no objects object layer");
    return false;
}

CCDictionary *spawnPoint = objectGroup->objectNamed("SpawnPoint");

int x = ((CCString)*spawnPoint->valueForKey("x")).intValue();
int y = ((CCString)*spawnPoint->valueForKey("y")).intValue();

_player = new CCSprite();
_player->initWithFile("Player.png");
_player->setPosition(ccp(x,y));

this->addChild(_player);
this->setViewPointCenter(_player->getPosition());

我收到以下错误消息:CCDictionary * spawnPoint = objectGroup-> objectNamed("SpawnPoint");

I get an error on: CCDictionary *spawnPoint = objectGroup->objectNamed("SpawnPoint");

指出没有函数可以转换此objectGroup.(错误地没有合适的从Cocos2d :: Valuemap到Cocos2d :: CCdictionary的转换函数)

Stating that there is no function to convert this objectGroup. (error no suitable conversion function from Cocos2d::Valuemap to Cocos2d::CCdictionary existis)

从使用的不同cocos版本看，这似乎是一个问题(本教程为v2，我为v3).

This looks like a problem from the diferents cocos' versions used (The tutorial is v2 and i'm v3).

有人知道如何解决此问题吗?

Does anyone knows how to fix this?

推荐答案

为什么不使用自动指针，而是使用常规C ++语法访问返回的无序映射.参见下面的代码示例.

Why don't you use a auto pointer, and access the unordered map returned using the normal C++ syntax. See below for code sample.

auto spawnPoints = objectGroupd->objectNamed("SpawnPoint");
int x = spawnPoints.at("x").asInt();
int y = spawnPoints.at("y").asInt();

这将为您提供raywenderlich教程期望的相同值.

This will get you the same values that the raywenderlich tutorial expects you to have.

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