我在这里有点不知所措,如果已经有人问过这个问题,请原谅我 - 我已经在谷歌上搜索了很多,但我找不到任何东西?
我正在尝试旋转在类中生成的一组 Sprite ,然后在单击菜单项时在主游戏场景中旋转该对象,但旋转不在 Sprite 的中心?它是一个更大的区域,可能是层大小?
我尝试过将 anchor 设置为每种可能的组合?
这是 iv 得到的
这是游戏角色.h
#define COMPUTE_X(x) ((abs(x)) * 16) + (16*2) + (16/2)
#define COMPUTE_Y(y) (386 - (abs(y) * 16)) + (16/2)
#define COMPUTE_X_Y(x,y) ccp( COMPUTE_X(x), COMPUTE_Y(y))
// Game character class
#include "cocos2d.h"
using namespace cocos2d;
//a class to encapsulate playable game character by creating a group of sprites etc..
#ifndef GAMECHARACTER_H
#define GAMECHARACTER_H
class GameCharacter : public CCNode {
private:
//some private methods etc....
public:
void addSprite(const char* filename);
void setInitialPosition(CCPoint* position);
//Various other methods.........
};
#endif
void GameCharacter::addSprite(const char* filename)
{
//go get the sprite sheet
CCTexture2D* gameArtTexture = CCTextureCache::sharedTextureCache()->addPVRImage("SpriteSheet.pvr.ccz");
CCSpriteBatchNode::batchNodeWithTexture(gameArtTexture);
CCSprite *tempBlock = CCSprite::spriteWithSpriteFrameName(filename);
this->addChild((CCSprite*)tempBlock,0);
}
void GameCharacter::setInitialPosition(CCPoint* position)
{
//loop through the positions and set the character up
CCArray *children = this->getChildren();
CCSprite *currentBlock;
for (int i=0;i<7;i++){
currentBlock = (CCSprite*) children->objectAtIndex(i);
//compute x y grid positions (1,1) ---> to real (72,394)
currentBlock->setPosition(COMPUTE_X_Y(position[i].x,position[i].y));
}
}
This is the gamecharacter.cpp
void GameScene::AddCharacter(CCPoint* position)
{
const char* filename;
GameCharacter* character = new GameCharacter();
for (int i = 0; i < 7; i++) {
filename = helperFunctions::Format("character%d.png",i+1); //character1.png -> character7.png
character->addSprite(filename);
}
character->setInitialPosition(position);
this->addChild((CCSprite*) character,-1,2);
_sprite = character;
}
//here is the menuitem click handler
void GameScene::menuRotateRightCallback(CCObject* pSender)
{
//rotate the character right
//really slowly so we can see whats happening
_sprite->runAction((CCRotateBy::actionWithDuration(2.50,90)));
}
谢谢
最佳答案
使用起来容易得多,
x = center.x + cos(angle) * radius;
y = center.y + sin(angle) * radius;
关于rotation - Cocos2dx继承的CCNode类不围绕其中心旋转?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/9403517/