标签：des style blog http io ar os sp for
#ifndef __HELLOWORLD_SCENE_H__
#define __HELLOWORLD_SCENE_H__
#include "cocos2d.h"
#include <queue>
#include <vector>
USING_NS_CC;
//定义【当前点】类，包含权值F和坐标点
class pointValue
{
public:
pointValue(Point tem, Point dst , int total)
{
tempPoint = tem;
FValue = (abs((int)dst.x-(int)tem.x +(int)dst.y-(int)tem.y) + total) ;
}
//当前点坐标，和F值
Point tempPoint;
int FValue;
};
//设置优先队列比较函数，F值最小的【当前点】在优先队列的Top
struct Compare
{
bool operator ()(pointValue a,pointValue b)
{
return a.FValue > b.FValue;
}
};
class HelloWorld : public cocos2d::Layer
{
public:
static cocos2d::Scene* createScene();
virtual bool init();
CREATE_FUNC(HelloWorld);
void menuCloseCallback(cocos2d::Ref* pSender);
//二维数组，防止点重复探索，初始化为0，探索过的设为1
int arr[15][10];
//TileMap的层
TMXLayer *layer;
//待检测坐标列表,优先队列作为OpenList
std::priority_queue<pointValue, std::vector<pointValue>,Compare> p_quene;
std::vector<pointValue> openList;
//关闭列表
std::vector<pointValue> closeList;
std::vector<pointValue>::iterator closeListStart;
//起点瓦片坐标
Point beginPoint;
//终点瓦片坐标
Point destination;
//估算一个从起始点到终点的格子数目，每移动一次，则减30
int total;
//将最终的路径所有点，存放在closeList中
bool aStart();
};
#endif // __HELLOWORLD_SCENE_H__
#include "HelloWorldScene.h"
USING_NS_CC;
Scene* HelloWorld::createScene()
{
auto scene = Scene::create();
auto layer = HelloWorld::create();
scene->addChild(layer);
return scene;
}
bool HelloWorld::init()
{
if ( !Layer::init() )
{
return false;
}
Size visibleSize = Director::getInstance()->getVisibleSize();
Vec2 origin = Director::getInstance()->getVisibleOrigin();
//载入TileMap地图
auto map = TMXTiledMap::create("map.tmx");
addChild(map);
//获取TileMap的层
layer = map->getLayer("layer1");
//确定起点瓦片坐标和初始化二维数组
beginPoint = Point(0,0);
arr[0][0] = 1;
//点击事件监听,记录终点瓦片坐标
auto listener = EventListenerTouchOneByOne::create();
listener->onTouchBegan = [this](Touch *t, Event *e)
{
//设置终点瓦片坐标
int dx = (int)(t->getLocation().x)/32;
int dy = 14 - (int)(t->getLocation().y)/32;
this->destination = Point(dx,dy);
CCLOG("%d,%d",dx,dy);
//自己设置起点到终点的最短格子数估值，即G值
total = 1000;
//寻找最短路径，坐标存放在closeList里面
aStart();
return true;
};
Director::getInstance()->getEventDispatcher()->addEventListenerWithSceneGraphPriority(listener,this);
return true;
}
bool HelloWorld::aStart()
{
//每调用一次aStart相当于移动一步，每移动一步total减30,作为G值
total = total - 30;
if ((int)beginPoint.x == (int)destination.x && (int)beginPoint.y == (int)destination.y)
{
return true;
}
//探索这个点的4周(上，右，下，左),若存在，则放进优先队列openList中
//判断上方
if ((int)beginPoint.x >= 0 && ((int)beginPoint.y-1) >= 0 && (int)beginPoint.x <= 9 && ((int)beginPoint.y-1) <= 14 ){
Sprite *testUp = layer->getTileAt(Vec2((int)beginPoint.x,(int)beginPoint.y-1));
if (testUp != NULL && (arr[(int)beginPoint.x][(int)beginPoint.y-1] != 1) )
{
CCLOG("up");
//初始化探索的点，将它放进优先队列openList中，并设置二维数组中的值为1，防止重复探索
auto temp = new pointValue(Point(beginPoint.x,beginPoint.y-1),destination,total);
p_quene.push(*temp);
arr[(int)beginPoint.x][(int)beginPoint.y-1] = 1;
}
}
//判断左方
if (((int)beginPoint.x-1) >= 0 && (int)beginPoint.y >= 0 && ((int)beginPoint.x-1) <= 9 && (int)beginPoint.y <= 14) {
Sprite *testLeft = layer->getTileAt(Vec2((int)beginPoint.x-1,(int)beginPoint.y));
if (testLeft != NULL && (arr[(int)beginPoint.x-1][(int)beginPoint.y] != 1) )
{
CCLOG("left");
//初始化探索的点，将它放进优先队列openList中，并设置二维数组中的值为1，防止重复探索
auto temp2 = new pointValue(Point(beginPoint.x-1,beginPoint.y),destination,total);
p_quene.push(*temp2);
arr[(int)beginPoint.x-1][(int)beginPoint.y] = 1;
}
}
//判断下方
if ((int)beginPoint.x >= 0 && ((int)beginPoint.y+1) >= 0 && (int)beginPoint.x <= 9 && ((int)beginPoint.y+1) <= 14) {
Sprite *testDown = layer->getTileAt(Vec2((int)beginPoint.x,(int)beginPoint.y+1));
if (testDown != NULL && (arr[(int)beginPoint.x][(int)beginPoint.y+1] != 1) )
{
CCLOG("down");
//初始化探索的点，将它放进优先队列openList中，并设置二维数组中的值为1，防止重复探索
auto temp3 = new pointValue(Point(beginPoint.x,beginPoint.y+1),destination,total);
p_quene.push(*temp3);
arr[(int)beginPoint.x][(int)beginPoint.y+1] = 1;
}
}
//判断右方
if (((int)beginPoint.x+1) >= 0 && (int)beginPoint.y >= 0 && ((int)beginPoint.x+1) <= 9 && (int)beginPoint.y <= 14){
Sprite *testRight = layer->getTileAt(Vec2((int)beginPoint.x+1,(int)beginPoint.y));
if (testRight != NULL && (arr[(int)beginPoint.x+1][(int)beginPoint.y] != 1))
{
CCLOG("right");
//初始化探索的点，将它放进优先队列openList中，并设置二维数组中的值为1，防止重复探索
auto temp4 = new pointValue(Point(beginPoint.x+1,beginPoint.y),destination,total);
p_quene.push(*temp4);
arr[(int)beginPoint.x+1][(int)beginPoint.y] = 1;
}
}
//重置当前位置
beginPoint.x = p_quene.top().tempPoint.x;
beginPoint.y = p_quene.top().tempPoint.y;
CCLOG("%d,%d",(int)beginPoint.x,(int)beginPoint.y);
//把F值最小的点，放进closeList中,并从优先队列中pop掉
closeList.push_back(p_quene.top());
p_quene.pop();
//在路径中添加精灵
auto star = Sprite::create("star.png");
star->setPosition(Point(beginPoint.x*32+10,480-beginPoint.y*32-10));
addChild(star);
//继续递归
aStart();
}
void HelloWorld::menuCloseCallback(Ref* pSender)
{
#if (CC_TARGET_PLATFORM == CC_PLATFORM_WP8) || (CC_TARGET_PLATFORM == CC_PLATFORM_WINRT)
MessageBox("You pressed the close button. Windows Store Apps do not implement a close button.","Alert");
return;
#endif
Director::getInstance()->end();
#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
exit(0);
#endif
}
标签：des style blog http io ar os sp for
原文地址：http://blog.csdn.net/ns2250225/article/details/41440211
