球球大作战简易版代码（含简单人机）

不废话，直接上代码：

#include<>
#include<>
#include<>
#include<>
#include<>
/*
项目内容：球球大作战
开发环境：vs2019+easyx
*/


#define SCREEN_TICK_PER_FRAME (1000/60.0) //每一帧需要的毫秒数
#define FOODNUM 200 //食物数量
#define	AINUM 10    //人机数量
#define distance(spr1,spr2) sqrt(((spr1)->x-(spr2)->x)*((spr1)->x-(spr2)->x)+((spr1)->y-(spr2)->y)*((spr1)->y-(spr2)->y))

//创建球球结构体
struct Sprite//精灵
{
	double x;
	double y;
	double r;
	double speed;
	bool isdie=false;//是否godie了
	COLORREF color;//颜色

	int index;
};
//初始化精灵
void spr_init(Sprite* spr, int x, int y, int r, int speed)
{
	spr->x = x;
	spr->y = y;
	spr->r = r;
	spr->speed = speed;
	spr->color = RGB(rand()%256,rand()%256,rand()%256);		//随机生成颜色

	spr->isdie = false;
	spr->index = -1;   //人机食物坐标

}
void spr_draw(Sprite* spr)
{
	if (!spr->isdie)
	{
		//设置填充颜色
		setfillcolor(spr->color);
		//绘制一个圆
		solidcircle(spr->x, spr->y, spr->r);
	}
}

void gamer_move(Sprite* spr)
{
	//获取键盘按键
	if (GetAsyncKeyState(VK_UP))					//GetAsyncKeyState获取异步按键的状态（检测某个健是否按下）
	{
		spr->y -= spr->speed;
	}
	if (GetAsyncKeyState(VK_DOWN))					//GetAsyncKeyState获取异步按键的状态（检测某个健是否按下）
	{
		spr->y += spr->speed;
	}
	if (GetAsyncKeyState(VK_LEFT))					//GetAsyncKeyState获取异步按键的状态（检测某个健是否按下）
	{
		spr->x -= spr->speed;
	}
	if (GetAsyncKeyState(VK_RIGHT))					//GetAsyncKeyState获取异步按键的状态（检测某个健是否按下）
	{
		spr->x += spr->speed;
	}
}

void gamer_eatFood(Sprite* gamer, Sprite* foods)
{
	//遍历食物数组
	for (int i = 0; i < FOODNUM; i++) 
	{
		//圆心距小于玩家的半径
		if (!foods[i].isdie&&distance(gamer, foods+i) < gamer->r)
		{
			//玩家变大
			gamer->r += foods[i].r/8;

			//食物消失
			foods[i].isdie = true;
		}
	}
	
}

void ai_eatFood(Sprite* ais, Sprite* foods)
{
	for (int i = 0; i < AINUM; i++)
	{
		if (ais[i].isdie)
			continue;
		for (int k = 0; k < FOODNUM; k++)
		{
			if (!foods[k].isdie && distance(ais + i, foods + k) < ais[i].r)
			{
				ais[i].r += foods[ais[i].index].r / 8;
				foods[k].isdie = true;
			}
		}
	}
}

//定义全局变量
Sprite gamer;//玩家
Sprite food[FOODNUM]; //食物的数组
Sprite ai[AINUM];//人工智障 联机

//追击方法
void chase(Sprite* chase, Sprite* run)
{
	if (chase->x > run->x)
	{
		chase->x--;
	}
	else
	{
		chase->x++;
	}
	
}

void ai_move(Sprite* ais,Sprite* foods)
{
	int minDis = getwidth();
	//吃最近的食物
	int k;
	for (int i = 0; i < FOODNUM; i++)	//食物
	{
		if (food[i].isdie)
			continue;
		
		for (k = 0; k < AINUM; k++)
		{
			if (ais[k].isdie)
				continue;
			//开始判断
			double dis = distance(foods + i, ais + k);
			if (dis < minDis)
			{
				minDis = dis;
				ais[k].index = k;
			}
		}
	}

	for (int i = 0; i < AINUM; i++)
	{
		if (!foods[ais[i].index].isdie)
		{
			//开始追击
			chase(ais + i, foods + ais[i].index);
			能吃了,圆心距小于我的半径
			//if (distance(ais + i, foods + ais[i].index) < ais[i].r)
			//{
			//	ais[i].r = foods[ais[i].index].r / 8;
			//	foods[ais[i].index].isdie = true;
			//}
			
			

		}
	}
}
void draw()
{
	spr_draw(&gamer);
	//绘制所有食物
	for (int i = 0; i < FOODNUM; i++)
	{
		spr_draw(food + i);
	}
	for (int i = 0; i < AINUM; i++)
	{
		spr_draw(ai + i);
	}
}

//初始化所有数据
void init()
{
	srand(time(NULL));

	spr_init(&gamer, 1024 / 2, 640 / 2, 10, 3);

	//初始化所有的食物
	for (int i = 0; i < FOODNUM; i++)
	{
		int r = rand() % 5 + 2;
		int x = rand() % (getwidth());
		int y = rand() % (getheight());
		spr_init(food + i, x, y, r, 0);
	}
	//初始化人机
	for (int i = 0; i < AINUM; i++)
	{
		int r = rand() % 10 + 10;
		int x = rand() % (getwidth()-r);
		int y = rand() % (getheight()-r);
		spr_init(ai + i, x, y, r,3);
	}
	
}


int main()
{
	//创建窗口
	initgraph(1024, 640);
	//设置背景颜色
	setbkcolor(WHITE);
	cleardevice();
	
	init();

	
	while (true) {
		//获取一下时间
		int startTime = clock();


		//绘制太快，未完成的步骤都已经被看到，所以会闪屏
		BeginBatchDraw(); //开启双缓冲
		//在绘制前先清屏
		cleardevice();
		draw();

		gamer_move(&gamer);
		ai_move(ai,food);
		gamer_eatFood(&gamer, food);
		ai_eatFood(ai, food);
		EndBatchDraw();//结束双缓冲

		//控制游戏帧率
		int	frameTime = clock() - startTime;	//计算一帧用了多久
		//提前就执行完了当前帧了 frametime 10 16.6666
		if (frameTime < SCREEN_TICK_PER_FRAME)
		{
			Sleep(SCREEN_TICK_PER_FRAME - frameTime);
		}
		
		
	}

	getchar();//防止闪退
	return 0;
}