项目预备知识

导入两个头文件

#include <graphics.h> // 引入 EasyX 的图形库头文件
#include <conio.h>    // 引入 conio.h 以使用 getch()

窗口创建函数：小黑屏

initgraph(640, 480, SHOWCONSOLE);
closegraph();   //关闭一个窗口

设置背景颜色：这里设置完颜色之后，还需要清除一下设备，不然还是黑色的

setbkcolor(WHITE);  //设置背景颜色
cleardevice();  //清屏，把黑色清楚掉......每画一个东西，都需要清除一次

绘图函数：（这里以画圆为例），前缀是需要绘图的类型，后缀是种类

circle()无填充
fillcircle()有边框填充
solidcircle()无边框填充

下面是使用方式：

circle(50, 50, 50);
fillcircle(50, 150, 50);
solidcircle(50, 250, 50);

设置类：这个是窗口下的形状

setlinestyle(PS_SOLID, 5);   //设置线条样式    setlinestyle(样式，宽度)
setfillcolor(YELLOW);   //设置填充颜色    setfillcolor(颜色)
setlinecolor(BLUE);      //设置线条边框颜色 setlinecolor

设置文字的函数：

//设置文字颜色
settextcolor(RED);
//设置文字样式
settextstyle(20, 0, "楷体");
//设置背景模式
//变成透明TRANSPARENT
setbkmode(TRANSPARENT);

输出文字：

outtextxy(50, 50, "azlml");

文字居中的方法：

//把文字居中的操作，画图理解
fillrectangle(200, 50, 500, 100);   //画一个矩形
settextcolor(RGB(0, 0, 14));
char arr[] = "居中显示";
int width = 300 / 2 - textwidth(arr) / 2;
int hight = 50 / 2 - textheight(arr) / 2;
outtextxy(width + 200, hight + 50, arr);

有关图片的函数：

IMAGE img; //定义一个对象
//加载图片
//  用的是相对路径 ./表示当前文件夹下    ../当前文件夹的上一级目录
//绝对路径  C:\Users\傅\source\repos\项目\项目\小鸟游六花.jpg
//jpg支持背景透明，png不支持背景透明
loadimage(&img, "./小鸟游六花.jpg", 250, 250); //可以调整图片的大小，不是在输出的时候改
//输出图片
putimage(0, 0, &img);

有关键盘的函数：

kbhit()    //判断是有键盘有被按下
char key = _getch();    //读键盘的消息

键盘的操作：

if (kbhit())    //判断是否有键盘按下
{//键盘消息char key = _getch();printf("%d%c\n", key, key);switch (key){//上键case 'w':case 'W':yy--;printf("上键\n");break;case 's':case 'S':yy++;printf("下键\n");break;case 'a':case 'A':xx--;printf("左键\n");break;case 'd':case 'D':xx++;printf("右键\n");break;}
}

鼠标操作：

//鼠标消息
if (MouseHit())
{MOUSEMSG msg = GetMouseMsg();// 消息分发switch (msg.uMsg){case WM_LBUTTONDOWN:outtextxy(400, 400, "鼠标左键按下");if (msg.x > 200 && msg.x < 500 && msg.y>50 && msg.y < 200)  //在框框内{printf("在框框内\n");//输出鼠标点击的坐标printf("坐标(%d,%d)\n", msg.x, msg.y);}break;case WM_RBUTTONDOWN:outtextxy(400, 400, "鼠标右键按下");if (msg.x > 200 && msg.x < 500 && msg.y>50 && msg.y < 200)  //在框框内{printf("在框框内\n");//输出鼠标点击的坐标printf("坐标(%d,%d)\n", msg.x, msg.y);}break;}
}/*case  WM_MOUSEMOVE:       ……break;//鼠标移动消息case  WM_MOUSEWHEEL:      ……break;// 鼠标滚轮拨动消息case  WM_LBUTTONDOWN:     ……break;// 左键按下消息case  WM_MBUTTONDOWN:     ……break;// 中键按下消息case  WM_RBUTTONDOWN:     ……break;// 右键按下消息                        
*/

2048项目

#include <graphics.h> // 引入 EasyX 的图形库头文件
#include <conio.h>    // 引入 conio.h 以使用 getch()
#include<iostream>
#include<stdlib.h>
#include<time.h>
#include<math.h>
using namespace std;#define GRID_W 100//格子的宽度 100
#define MAX_SIZE 4//每行列，格子的数量
#define INTERVAL 15//格子的间距
#define WIN_SIZE MAX_SIZE * GRID_W + INTERVAL*5 // 矩形窗口
//定义一个数组，用来存储数据
int map[MAX_SIZE][MAX_SIZE];
int flag = 0;
enum Color {zero = RGB(205, 193, 180),two1 = RGB(238, 228, 218),two2 = RGB(237, 224, 200),two3 = RGB(242, 177, 121),two4 = RGB(245, 149, 99),two5 = RGB(246, 124, 95),two6 = RGB(246, 94, 59),two7 = RGB(242, 177, 121),two8 = RGB(237, 204, 97),two9 = RGB(255, 0, 128),two10 = RGB(145, 0, 72),two11 = RGB(242, 17, 158),back = RGB(187, 173, 160),
};
Color arr[13] = { zero,two1,two2, two3, two4, two5, two6, two7, two8, two9, two10,two11,back };
//随机产生一个整数2 or 4 ,产生2的概率大于4
int creatnum()
{//随机数 rand 需要加上头文件//直接用rand是不会产生随机数的，在此之前，需要设置随机数种子//需要获取时间，需要加上time.h头文件srand((unsigned)time(NULL) + clock());printf("%d",rand());if (rand()%6 ==0){return 4;}else{return 2;}
}
//初始化数据,随机产生两个数
void gameinit()
{for (int i=0; i<2 ;){//随机生成两个下标int r = rand() % 4;int c = rand() % 4; if (!map[r][c]){map[r][c] = creatnum();++i;}}
}
void gamenew()
{for (int i = 0; i < 1;){//随机生成两个下标int r = rand() % 4;int c = rand() % 4;if (!map[r][c]){map[r][c] = creatnum();++i;}}
}
//绘制主界面
void gamedraw()
{//设置背景颜色setbkcolor(RGB(186, 173, 160));cleardevice();	//设置颜色的时候需要清除背景for (int i = 0; i < MAX_SIZE; ++i){for (int j = 0; j < MAX_SIZE; ++j){//找到对应格子的左上角坐标int x1 = INTERVAL * (j+1) + GRID_W * j, y1=INTERVAL* (i + 1) + GRID_W * i;int x2 = x1 + GRID_W, y2 = y1 + GRID_W;int index = log2(map[i][j]);//设置格子填充颜色COLORREF tcolor = arr[index] ;setfillcolor(tcolor);//绘制格子solidroundrect(x1, y1, x2, y2,10,10);//把数组里面的数据绘制到图形窗口上面if (map[i][j] != 0)	//去0{//设置文字样式settextstyle(50, 0, "黑体");//设置文字背景透明setbkmode(TRANSPARENT);settextcolor(RGB(119, 110, 101));//把整形转化为字符串char str[10] = "";sprintf_s(str, "%d", map[i][j]);//居中int width = textwidth(str);int height = textheight(str);int xx = x1 + (GRID_W - width) / 2;int yy = y1 + (GRID_W - height) / 2;outtextxy(xx, yy, str);}}}
}//移动方格，移动数组里面的数
void moveup()
{for (int i = 0; i < MAX_SIZE; ++i){int temp = 0;for (int j = 1; j < MAX_SIZE; ++j){if (map[j][i]){if (!map[temp][i])	//上方元素为0{map[temp][i] = map[j][i];map[j][i] = 0;}else if (map[temp][i] == map[j][i])	//上方元素与当前元素相同{map[temp][i] *= 2;map[j][i] = 0;temp++ ;}else	//有距离{map[temp + 1][i] = map[j][i];if (temp + 1 != j){map[j][i] = 0;}temp++;}flag = 1;}}}
}void movedown()
{for (int i = MAX_SIZE-1; i >=0; --i){int temp = MAX_SIZE - 1;for (int j = MAX_SIZE - 2; j >=0; --j){if (map[j][i]){if (!map[temp][i]){map[temp][i] = map[j][i];map[j][i] = 0;}else if (map[temp][i] == map[j][i]){map[temp][i] *= 2;map[j][i] = 0;temp--;}else{map[temp - 1][i] = map[j][i];if (temp - 1 != j){map[j][i] = 0;}temp--;}flag = 1;}}}
}void moveleft()
{for (int i = 0 ; i < MAX_SIZE ; ++i){int temp = 0;for (int j = 1; j <MAX_SIZE; ++j){if (map[i][j]){if (!map[i][temp]){map[i][temp] = map[i][j];map[i][j] = 0;}else if (map[i][temp] == map[i][j]){map[i][temp] *= 2;map[i][j] = 0;temp++;}else{map[i][temp +1] = map[i][j];if (temp + 1 != j){map[i][j] = 0;}temp++;}flag = 1;}}}
}void moveright()
{for (int i = MAX_SIZE-1; i >=0; --i){int temp = MAX_SIZE-1;for (int j = MAX_SIZE - 2; j >=0; --j){if (map[i][j]){if (!map[i][temp]){map[i][temp] = map[i][j];map[i][j] = 0;}else if (map[i][temp] == map[i][j]){map[i][temp] *= 2;map[i][j] = 0;temp--;}else{map[i][temp -1] = map[i][j];if (temp - 1 != j){map[i][j] = 0;}temp--;}flag = 1;}}}
}   //按键处理
void keydeal()
{char key = _getch();switch (key){case 'w':case 'W':moveup();break;case 's':case 'S':movedown();break;case 'a':case 'A':moveleft();break;case 'd':case 'D':moveright();break;}
}int main()
{//创建窗口initgraph(WIN_SIZE, WIN_SIZE);gameinit();while (1){gamedraw();keydeal();if (flag){gamenew();flag = 0;}}_getch();closegraph();	//关闭窗口return 0;
}

球球大作战：

#include <graphics.h> // 引入 EasyX 的图形库头文件
#include <conio.h>    // 引入 conio.h 以使用 getch()
#include<time.h>
#include<stdlib.h>
#include<math.h>
#define FOOD_NUM 100
#define MAX_WIDTH 640
#define MAX_HIGHT 480
#define eatting(x1,y1,x2,y2) sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2))struct vector2d
{int x;int y;
};struct player
{vector2d pos;	//球的位置int r;	//球的半径vector2d v = { 0 };COLORREF color;	//角色球的颜色
};struct Food
{vector2d pos;	//球的位置int r;	//球的半径COLORREF color;	//球的颜色
};
//初始化玩家
void play_init(player *players)
{players->pos.x = rand() % MAX_HIGHT;players->pos.y = rand() % MAX_WIDTH;players->r = rand() % 10+5;players->v = { 0 };players->color = RGB(rand() % 256, rand() % 256, rand() % 256);
}
//绘制玩家
void player_drew(player* players)
{setfillcolor(players->color);//创建一个球solidcircle(players->pos.x, players->pos.y, players->r);
}void food_init(Food* food)
{food->pos.x = rand() % MAX_HIGHT;food->pos.y = rand() % MAX_WIDTH;food->r = rand() % 10 + 1;food->color = RGB(rand() % 256, rand() % 256, rand() % 256);
}void Food_drew(Food* food)
{setfillcolor(food->color);//创建一个球solidcircle(food->pos.x, food->pos.y, food->r);
}void move(player* players,ExMessage* msg)
{//按下消息if (msg->message == WM_KEYDOWN){switch (msg->vkcode){case VK_UP:players->v.y = -1;break;case VK_DOWN:players->v.y = 1;break;case VK_LEFT:players->v.x = -1;break;case VK_RIGHT:players->v.x = 1;break;}}else if (msg->message == WM_KEYUP)	//放开消息{switch (msg->vkcode){case VK_UP:players->v.y = 0;break;case VK_DOWN:players->v.y = 0;break;case VK_LEFT:players->v.x = 0;break;case VK_RIGHT:players->v.x = 0;break;}}
}void update(player* players)
{int tx = players->pos.x;int ty = players->pos.y;players->pos.x += players->v.x, players->pos.y += players->v.y;if (players->pos.x<0 || players->pos.x>MAX_WIDTH){players->pos.x = tx;}if (players->pos.y<0 || players->pos.y>MAX_HIGHT){players->pos.y = ty;}
}int main()
{//初始化界面initgraph(640, 480);	//建立一个矩形setbkcolor(RGB(214, 214, 214));	//设置背景颜色cleardevice();//设置了随机数种子srand(time(NULL));player players;play_init(&players);player_drew(&players);//产生可以吃的小球Food food[FOOD_NUM] = { 0 };//初始化每个小球的信息for (int i = 0; i < FOOD_NUM; ++i){food_init(food + i);}while (1){BeginBatchDraw();cleardevice();//绘制食物for (int i = 0; i < FOOD_NUM; ++i){Food_drew(food + i);}player_drew(&players);EndBatchDraw();for (int i = 0; i < FOOD_NUM; ++i){//如果被吃了，那么就更新球的位置,半径加1if (eatting(players.pos.x, players.pos.y, food[i].pos.x, food[i].pos.y) < players.r){food_init(food+i);players.r++;}}update(&players);//消息处理(按键  鼠标)ExMessage msg = { 0 };//获取消息if (peekmessage(&msg)){move(&players, &msg);}Sleep(1);                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  }                                                                                                                                                                                             _getch();closegraph();	//关闭界面return 0;
}