Cocos2d-x 3.2 大富翁游戏项目开发-第二十五部分 大富翁股市

当角色走到股市图标时，进入股市界面。每走完一个回合，增加一条股票数据，
股市界面上半部分显示股票信息，包括代码，名称，当前价格，买入价格，涨跌百分比，角色持有的股票数量
下半部分显示股票价格走势，当点击一个股票时，显示相关股票的价格走势，共显示最新14条的价格走势。

每次点击购买，买入100股 。点击卖出，则卖出所持有的该股的所有股票。成交价格 等信息动态更新
点击返回，返回到游戏主界面，并更新角色资金值

1、首先添加股票类
包括代码，名称，买入价格，涨跌百分比，持仓数量等定义以及相关的get 、set方法

class Stock : public Sprite
{
................
private:
<span style="white-space:pre">	</span>int stockCode; //股票代码
	String* stockName;//股票名称
        int nowPrice;//当前价格
        int makedealprice;//成交价格
	float percent;//涨跌百分比
	int storeNumber;//持仓数量
};

2、VisibleRect类，主要是为了方便的获取屏幕的尺寸等信息

class VisibleRect
{
public:
    static cocos2d::Rect getVisibleRect();
...................
private:
    static void lazyInit();
    static cocos2d::Rect s_visibleRect;
};

3、股票记录中的单元格类StockCellCard，包括单元格背景和显示文字的label。同彩票类card大体相同，不再解释了


4、在RicherPlayer的init方法中,给角色创建股票持有信息，主要是股票代码和持仓数量和买入价格。其他信息无关紧要

bool RicherPlayer::init(char* name, int tag,bool enemy,int money,int strength)
{
...........
	stockMap.insert(0,Stock::create(800100,LanguageString::getInstance()->getLanguageString(RICH_TECHNOLOGY),0,10,0,100));
	stockMap.insert(1,Stock::create(800200,LanguageString::getInstance()->getLanguageString(RICH_TECHNOLOGY),0,20,0,200));
	stockMap.insert(2,Stock::create(800300,LanguageString::getInstance()->getLanguageString(RICH_TECHNOLOGY),0,70,0,800));
	stockMap.insert(3,Stock::create(800400,LanguageString::getInstance()->getLanguageString(RICH_TECHNOLOGY),0,10,0,400));
	stockMap.insert(4,Stock::create(800500,LanguageString::getInstance()->getLanguageString(RICH_TECHNOLOGY),0,0,0,0));
	..........
}

5、当角色走到股票图标时RicherGameController 控制器，发送进入股市的消息

	 if(passId == GameBaseScene::stock_tiledID)
	 {
		 String * str = String::createWithFormat("%d-%f-%f-%d-%d",MSG_STOCK_TAG,1.0f,1.0f,_richerPlayer->getTag(),MOVEPASS);
		 NotificationCenter::getInstance()->postNotification(MSG_STOCK,str);
		 return;
	 }

6、GameBaseScene类定义了股票容器类，存放所以股票相关信息

vector<float> GameBaseScene::stock_pointvec1;
vector<float> GameBaseScene::stock_pointvec2;
vector<float> GameBaseScene::stock_pointvec3;
vector<float> GameBaseScene::stock_pointvec4;
vector<float> GameBaseScene::stock_pointvec5;

在更新回合计数时，调用updateStockVec()方法，添加股票一条新纪录
void GameBaseScene::refreshRoundDisplay()
{
..........
updateStockVec()
.......

}

//最多纪录14条纪录，超过的会被覆盖掉
void GameBaseScene::updateStockVec()
{
	float valule1 = rand()%800+10;
	float valule2 = rand()%800+10;
	float valule3 = rand()%800+10;
	float valule4 = rand()%800+10;
	float valule5 = rand()%800+10;

	if(stock_pointvec1.size()>13)
	{
		for(int i=0;i<13;i++)
		{
			stock_pointvec1.at(i)=stock_pointvec1.at(i+1);
			stock_pointvec2.at(i)=stock_pointvec2.at(i+1);
			stock_pointvec3.at(i)=stock_pointvec3.at(i+1);
			stock_pointvec4.at(i)=stock_pointvec4.at(i+1);
			stock_pointvec5.at(i)=stock_pointvec5.at(i+1);
			
		}
		stock_pointvec1.at(13) =valule1;
		stock_pointvec2.at(13) =valule2;
		stock_pointvec3.at(13) =valule3;
		stock_pointvec4.at(13) =valule4;
		stock_pointvec5.at(13) =valule5;
	}else
	{
		stock_pointvec1.push_back(valule1);
		stock_pointvec2.push_back(valule2);
		stock_pointvec3.push_back(valule3);
		stock_pointvec4.push_back(valule4);
		stock_pointvec5.push_back(valule5);
	}
}	 

7、当GameBaseScene收到进入股市界面的消息时，添加股市layer,显示股市

	case MSG_STOCK_TAG:
		{
				auto lineView = LineChart::createChart(player1);   
				lineView->setPosition(Point(0, 0));
				moveTag = messageVector.at(4)->intValue();
				lineView->moveTag = moveTag;				
				addChild(lineView);
				..............
			break;
		}	

8、LineChart类是股票界面类

(1)initChart方法

bool LineChart::initChart(RicherPlayer* player)
{
    if ( !LayerColor::initWithColor(Color4B(0,0,0,255))) //黑色背景
	{
		 return false; 
	}
	richerPlayer = player; //角色
	playerStockMap = player->stockMap;//角色持有的股票容器
	initStockVector(playerStockMap);
	drawNode = DrawNode::create();//创建DrawNode ，准备画图
	this->addChild(drawNode);
	tv = TableView::create(this, Size(650, 160));//创建TableView对象
        tv->setAnchorPoint(Point(0, 0));
        tv->setPosition(10, VisibleRect::getVisibleRect().size.height * 1 /2);	
        tv->setDelegate(this);
        addChild(tv);
	initMenu();//创建菜单，包括买入，卖出，返回Menu
	selectedTag =0;  
	float tableY =  VisibleRect::getVisibleRect().size.height * 1/2;
	//选择股票时，箭头移动到相关股票
	arrowSprite_left->setPosition(600+arrowSprite_left->getContentSize().width,tableY +selectedTag*32);
	arrowSprite_right->setPosition(10,tableY + selectedTag*32);
	setData(getsock_pointVec(selectedTag));//设置股票数据
	drawpic();//画走势图
    return true;
}

(2)initMenu方法创建菜单，包括买入，卖出，返回Menu，以及箭头提示

void LineChart::initMenu()
{
	Menu* menu = Menu::create();
	menu->setPosition(CCPointZero);
    setMenu(menu);
    MenuItemImage* buyMenuItemButton = MenuItemImage::create("images/buy_normal.png", "images/buy_pressed.png", this, menu_selector(LineChart::buttonCallback));
 
    buyMenuItemButton->setPosition(ccp(700,VisibleRect::getVisibleRect().size.height-110));
	buyMenuItemButton->setAnchorPoint(ccp(0,0));
	buyMenuItemButton->setTag(buy_button);
	menu->addChild(buyMenuItemButton);
	............
	arrowSprite_left = Sprite::create("images/arrow_left.png");
	arrowSprite_left->setPosition(ccp(-500,-500));
	arrowSprite_left->setAnchorPoint(ccp(0,0));
	addChild(arrowSprite_left);

	arrowSprite_right = Sprite::create("images/arrow_right.png");
	arrowSprite_right->setPosition(ccp(-500,-500));
	arrowSprite_right->setAnchorPoint(ccp(0,0));
	addChild(arrowSprite_right);
}

(3)initStockVector()添加股票上半部分表格的标题，以及给股票容器添加各个股票信息

void LineChart::initStockVector(Map<int,Stock*> stockMap)
{
	float percent = 0;
	if(GameBaseScene::stock_pointvec1.size()>1)
	{
		percent = (GameBaseScene::stock_pointvec1.at(GameBaseScene::stock_pointvec1.size()-1) - GameBaseScene::stock_pointvec1.at(GameBaseScene::stock_pointvec1.size()-2))/GameBaseScene::stock_pointvec1.at(GameBaseScene::stock_pointvec1.size()-2)*100;
	}

	stockVector.pushBack(Stock::create(800100,LanguageString::getInstance()->getLanguageString(RICH_TECHNOLOGY),GameBaseScene::stock_pointvec1.at(GameBaseScene::stock_pointvec1.size()-1),stockMap.at(0)->getMakedealprice(),percent,stockMap.at(0)->getStoreNumber()));
	
	..................
	
	Label* code = Label::createWithSystemFont(LanguageString::getInstance()->getLanguageString(STOCK_CODE)->getCString(),"", 20);
	code->setPosition(Point(20, 410 ));
	code->setAnchorPoint(ccp(0,0));
	addChild(code);

	Label* name = Label::createWithSystemFont(LanguageString::getInstance()->getLanguageString(STOCK_NAME)->getCString(),"", 20);
	name->setPosition(Point(stockCellWidth+20, 410 ));
	name->setAnchorPoint(ccp(0,0));
	addChild(name);

	Label* nowprice = Label::createWithSystemFont(LanguageString::getInstance()->getLanguageString(STOCK_NOWPRICE)->getCString(),"", 20);
	nowprice->setPosition(Point(stockCellWidth*2+20, 410 ));
	nowprice->setAnchorPoint(ccp(0,0));
	addChild(nowprice);

	Label* dealprice = Label::createWithSystemFont(LanguageString::getInstance()->getLanguageString(STOCK_DEALPRICE)->getCString(),"", 20);
	dealprice->setPosition(Point(stockCellWidth*3+20, 410 ));
	dealprice->setAnchorPoint(ccp(0,0));
	addChild(dealprice);

	Label* percentLabel = Label::createWithSystemFont(LanguageString::getInstance()->getLanguageString(STOCK_PERCENT)->getCString(),"", 20);
	percentLabel->setPosition(Point(stockCellWidth*4+20, 410 ));
	percentLabel->setAnchorPoint(ccp(0,0));
	addChild(percentLabel);


	Label* store = Label::createWithSystemFont(LanguageString::getInstance()->getLanguageString(STOCK_STORE)->getCString(),"", 20);
	store->setPosition(Point(540, 410 ));
	store->setAnchorPoint(ccp(0,0));
	addChild(store);


	playerMoneyLabel = Label::createWithSystemFont(
		String::createWithFormat("%s %d",LanguageString::getInstance()->getLanguageString(PLAYER_MONEY)->getCString(),richerPlayer->getMoney())->getCString(),
		"", 20);
	playerMoneyLabel->setPosition(Point(20, 450 ));
	playerMoneyLabel->setAnchorPoint(ccp(0,0));
	addChild(playerMoneyLabel);

}

(4)buttonCallback()，点击买入 ，卖出，返回的回调方法
 void LineChart::buttonCallback(CCObject* pSender)
 {
.............

 }

(5)TableView 相关实现方法

//当点击股票时，移动箭头，更新数据，重画走势图
void LineChart::tableCellTouched(cocos2d::extension::TableView *table, cocos2d::extension::TableViewCell *cell)
{
    
	for(int i=0;i<30;i++)
	{
		this->removeChildByTag(100+i);
	}

	int tag = cell->getTag();
	selectedTag =tag;
    log("******click id = %d",tag);
	float height = VisibleRect::getVisibleRect().size.height;
	float tableY =  VisibleRect::getVisibleRect().size.height * 1/2;
	arrowSprite_left->setPosition(600+arrowSprite_left->getContentSize().width,tableY +tag*32);
	arrowSprite_right->setPosition(10,tableY + tag*32);
	log("all height is %f",height);
	log("all cellY is %f",tableY);
	setData(getsock_pointVec(tag));
	drawpic();
	    
}

//创建tableview相关单元格，当股市上涨时，背景色为红色，下跌时为绿色
TableViewCell* LineChart::tableCellAtIndex(cocos2d::extension::TableView *table, ssize_t idx)
{
    TableViewCell *cell = table->dequeueCell();  
    LabelTTF *label;

    int colorTag = 0;
	if(stockVector.at(idx)->getPercent()>0)
	{
		colorTag = 1;
	}else
	{
		colorTag = -1;
	}

    if (cell==NULL) 
	{		
        cell = TableViewCell::create();
		cell->setTag(idx);  
		for(int i=0; i<6; i++)    
		{  
			switch(i)
			{
			case 0:
				{
					StockCellCard* card = StockCellCard::createCardSprite(String::createWithFormat("%d",stockVector.at(idx)->getCode()), stockCellWidth, stockCellHeight, stockCellWidth*i+10, 0,colorTag);    
					cell->addChild(card);
					break;
				}
			case 1:
				{
					StockCellCard* card = StockCellCard::createCardSprite(stockVector.at(idx)->getStockName(), stockCellWidth, stockCellHeight, stockCellWidth*i+10, 0,colorTag);    
					cell->addChild(card);
					break;
				}
....................................
			}
			

		} 

    }
    
    return cell;
}

//共5支股票
ssize_t LineChart::numberOfCellsInTableView(cocos2d::extension::TableView *table){
    return 5;
}

(6)画走势图

void LineChart::drawpic()
{
	drawNode->clear();
	int maxValue = getMaxValue(pointvec);
	int maxValue2 = int((maxValue+100) / 100)* 100 ;
     maxValue1 = maxValue2  / 10;
    
    
     spaceRatio = 0.08f;  //y轴间距系数
     leftRatioX = 0.1f;   //x轴左侧间距系数
    
    
    int fontSize = 20;
    string fontName = StringUtils::format("Thonburi");
    
    Size layerSize = Size(VisibleRect::getVisibleRect().size.width, VisibleRect::getVisibleRect().size.height * 1 /2);
    
    
      layerHeight1 = 30;
    float layerHeight = layerHeight1;
    float layerWidth = layerSize.width;
    int count = layerSize.width /50;
    /***********************画xy轴标签*************************************/

    for (int i = 0; i < 11; i++) {
        Point bPoint = Point(layerWidth* leftRatioX, layerHeight );
        Point ePoint = Point(layerWidth* leftRatioX+(count-2) * 50, layerHeight );
        Label* label = Label::createWithSystemFont(StringUtils::format("%d",maxValue1* i).c_str(), fontName.c_str(), fontSize);       
        label->setPosition(Point(layerWidth* 0.05f, layerHeight ));
	label->setTag(100+i);
        addChild(label);      
	drawNode->drawSegment(bPoint, ePoint, 0.5,Color4F(100, 100, 200, 200));		
        layerHeight += layerSize.height * spaceRatio;         
    }


	float layer_wd = layerSize.width * leftRatioX;
        for (int i = 0; i < count; i++) {
     

		Point bPoint  = Point(layer_wd, layerHeight1);        
		Point ePoint  = Point(layer_wd, layerSize.height * spaceRatio*10+layerHeight1); 
		if(i%2 == 0)
		{
			drawNode->drawSegment(bPoint,ePoint,0.5,Color4F(100, 100, 200, 200));
		}

		auto labelX = Label::createWithSystemFont(StringUtils::format("%d",i).c_str(), "Thonburi", 20);
                labelX->setPosition(Point(ePoint.x, 0));
		labelX->setAnchorPoint(ccp(0,0));
		labelX->setTag(100+11+i);
                this->addChild(labelX);
                layer_wd += 50;
     
    }
	

	drawLine(pointvec, Color4B(0, 255, 255, 255),Color4B(255, 0, 255, 255));
}

//画走势线条

void LineChart::drawLine(vector<Point> vec,Color4B lineColor,Color4B dotColor)
{
	
    Size layerSize = Size(VisibleRect::getVisibleRect().size.width, VisibleRect::getVisibleRect().size.height * 1 /2);
       
    float layerWidth = layerSize.width;
        
    float tempWidth = layerSize.height * spaceRatio;
    float tempWidth2 = 0;
    
    float tempHeight1 = maxValue1  ;   

    double  ratio = tempWidth/tempHeight1;
    
    
    /**********************开始画线**********************/
    std::vector<Point>::iterator beforePoint;
    std::vector<Point>::iterator currentPoint;
    
    beforePoint = vec.begin();
    
    for (currentPoint = vec.begin() + 1;currentPoint != vec.end() ; currentPoint++) {
        Point bPoint  = *beforePoint;
        bPoint = Point(bPoint.x + layerWidth* leftRatioX, bPoint.y * ratio + layerHeight1 +tempWidth2);
        
        Point ePoint  = *currentPoint;
        ePoint = Point(ePoint.x + layerWidth* leftRatioX, ePoint.y * ratio + layerHeight1 +tempWidth2);
        
		drawNode->drawSegment(bPoint, ePoint, 0.8,Color4F::RED);
        beforePoint = currentPoint;
        
    }

     /**********************结束画线**********************/   
   
    /********************开始画点**********************************************/
    beforePoint = vec.begin();
    DrawPrimitives::setDrawColor4B(dotColor.r, dotColor.g, dotColor.b, dotColor.a);
    Point bPoint  = *beforePoint;
    bPoint = Point(bPoint.x +layerWidth* leftRatioX, bPoint.y * ratio + layerHeight1 +tempWidth2);

	drawNode->drawDot(bPoint, 5, Color4F::YELLOW); 

    int i = 2;
    for (currentPoint = vec.begin() + 1;currentPoint != vec.end() ; currentPoint++) {
        Point ePoint  = *currentPoint;    
        ePoint = Point(ePoint.x + layerWidth* leftRatioX, ePoint.y * ratio + layerHeight1 + tempWidth2);              
        drawNode->drawDot(ePoint, 5, Color4F::YELLOW); 
        i++;
    }
     /********************结束画点*********************************************END**/
    
}

//设置股票数据

void LineChart::setData(vector<float> data)
{
	pointvec.clear();
    vector<float>::iterator it;
    int i = 0;
    
    for (it = data.begin();it != data.end();it++) {
        float f = *it;
        pointvec.push_back(Point(50 * (i+1), f));               
        i++;
        
    }
    
}

//获取最大值
double LineChart::getMaxValue(std::vector<Point> vec)
{
    
    double maxY =1;
    
    for (int i = 0; i < vec.size(); i++)
	{
        float num = vec.at(i).y;
        if (maxY < abs(num)) 
		{
            maxY = abs(num);
        }
    }
    return maxY;
}

这就是大体代码，详细内容，请参考代码，如下效果图

点击下载代码

未完待续...................