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;
}