esayx:
贪吃蛇:
#include "iostream"
#include "cmath"
#include "conio.h"
#include "easyx.h"
#include "time.h"
#define NODE_WIDTH 40
using namespace std;
typedef struct {
int x;
int y;
}node;
enum direction //蛇的方向，上下左右
{
eUP,
eDown,
eLeft,
eRight
};
void paintGrid(){ //封装函数：绘制直线
for (int x = 0; x < 800; x += NODE_WIDTH) {
line(x, 0, x, 600);
}
for (int y = 0; y < 600; y += NODE_WIDTH) {
line(0, y, 800, y);
}
}
void paintsnake(node* snake, int n) {
int left, right, top, bottom;
for (int i = 0; i < n; i++) {
left = snake[i].x * NODE_WIDTH;
top = snake[i].y * NODE_WIDTH;
right = (snake[i].x+1) * NODE_WIDTH;
bottom = (snake[i].y + 1) * NODE_WIDTH;
solidrectangle(left, top, right, bottom);
}
}
node snakeMove(node* snake, int length, int direction) {
node tail = snake[length - 1];
for (int i = length - 1; i > 0; i--) {
snake[i] = snake[i - 1];
}
node newhead;
newhead= snake[0];
if (direction == 0) {
newhead.y--;
}
else if (direction == 1) {
newhead.y++;
}
else if (direction == 2) {
newhead.x--;
}
else if (direction == 3) {
newhead.x++;
}
snake[0] = newhead;
return tail;
}
void changeDirection(enum direction* pD) {
if (_kbhit()!=0) {
char c = _getch();
if (c == 'w') {
if (*pD != eDown)
*pD = eUP;
}
else if (c == 's') {
if (*pD != eUP)
*pD = eDown;
}
else if (c == 'a') {
if (*pD != eRight)
*pD = eLeft;
}
else if (c == 'd') {
if (*pD != eLeft)
*pD = eRight;
}
}
}
node createFood(node* snake, int length) {
node food;
int i;
while (1) {
food.x = rand() % (800 / NODE_WIDTH); //[0,19]
food.y = rand() % (600 / NODE_WIDTH); //[0,14]
for (i = 0; i < length; i++) {
if (snake[i].x == food.x && snake[i].y == food.y) //判断食物是否与蛇重叠
break;
}
if (i < length)continue; //重叠
else break; //不重叠跳出
}
return food;
}
void paintfood(node food) {
int left, right, top, bottom;
left = food.x * NODE_WIDTH;
top = food.y * NODE_WIDTH;
right = (food.x + 1) * NODE_WIDTH;
bottom = (food.y + 1) * NODE_WIDTH;
setfillcolor(YELLOW);
solidrectangle(left, top, right, bottom);
setfillcolor(WHITE);
}
bool isGameOver(node* snake, int length) { //判断输赢
if (snake[0].x < 0 || snake[0].x>800/NODE_WIDTH)
return true;
if (snake[0].y < 0 || snake[0].y>600 / NODE_WIDTH)
return true;
for (int i = 1; i < length; i++)
{
if (snake[i].x == snake[0].x && snake[i].y == snake[0].y)
return true;
}
return false;
}
void reset(node* snake, int* plength, enum direction* d) {
snake[0] = { 5,7 };
snake[1] = { 4,7 };
snake[2] = { 3,7 };
snake[3] = { 2,7 };
snake[4] = { 1,7 };
*plength = 5;
*d = eRight;
}
int main() {
enum direction d = eRight;
node snake[100] = { {5,7},{4,7},{3,7},{2,7},{1,7} };
int length = 5;
initgraph(800, 600);
setbkcolor(RGB(164, 225, 202));
cleardevice();
srand(unsigned int(time(NULL))); //食物随机
node food = createFood(snake, length);
while(1){
cleardevice();
paintGrid();
paintsnake(snake, length);
paintfood(food);
Sleep(150);
changeDirection(&d);
node lastTail=snakeMove(snake, length, d);
if (snake[0].x == food.x && snake[0].y == food.y) {
if (length < 100) {
snake[length] = lastTail;
length++;
}
food = createFood(snake, length);
}
if (isGameOver(snake, length) == true)
{
reset(snake, &length, &d);
food = createFood(snake, length);
}
}
getchar();
closegraph();
}
图像处理:
#include "iostream"
#include "cmath"
#include "conio.h"
#include "easyx.h"
#include "time.h"
#include "stdlib.h"
using namespace std;
void putransparentImage(int x, int y, const IMAGE* mask, const IMAGE *img) {
putimage(x, y, mask, SRCAND);
putimage(x, y, img, SRCPAINT);
//绘制透明图片的封装函数
}
int main() {
//IMAGE对象:保存图片的各种信息
//loadimage( //加载一个图片文件，将图片信息填充至IMAGE对象中
//IMAGE* pDstImg, 待填充的IMAGE对象指针
//LPCTSTR pImgFile, 图片的路径
// int nWidth=0, 图片的拉伸宽度，如果参数为0，使用原图宽度
// int nHeight=0, 图片的拉伸高度，如果参数为0，使用原图高度
// bool bResize=false 是否调整IMAGE的大小以适应图片
// );
//putimage( //将image对象中的图片显示在窗体上
//int dstX, //绘制位置的xy坐标
//int dstY,
//IMAGE *pSrcImg, //要绘制的IMAGE对象指针
//DWORD dwRop =SRCCOPY //三元光栅操作码
// );
//三元光栅常用:
//SRCAND:目标图像=目标图像and源图像
//SRCPAINT:目标图像=目标图像or源图像
//默认情况下会用SRCCOPY:目标图像=源图像
initgraph(1200, 480);
setbkcolor(WHITE);
cleardevice();
IMAGE img;
IMAGE img2;
IMAGE img3;
loadimage(&img, "./background.jpg");
loadimage(&img2, "./mask.jpg");
loadimage(&img3, "./bear.jpg");
putimage(0, 0, &img);
putimage(530, 180, &img2, SRCAND);
putimage(530, 180, &img3, SRCPAINT);
getchar();
closegraph();
//三元光栅操作码：剪影图片and绿色背景or黑背景熊主体=熊主题与背景
//（通过这样的方式就可以绘制出透明图片了)
//剪影图片称为掩码
}
按键处理:
#include "iostream"
#include "cmath"
#include "conio.h"
#include "easyx.h"
#include "time.h"
#include "stdlib.h"
int main() {
//EX_MOUSE; 鼠标消息
//EX_KEY; 按键消息
//EX_CHAR; 字符消息
//EX_WINDOW; 窗口消息
//ExMessage函数，创建消息容器
//ExMessage msg;
//如果两种及以上都想要:msg=getmessage(EX_MOUSE|EX_KEY);
// ExMessage函数内部：
//鼠标消息交互：
//bool ctrl ：1 ctrl是否按下
//bool shift : 1 shift是否按下
//bool lbutton :1 鼠标左键是否按下
//bool mbutton :1 鼠标中键是否按下
//bool rbutton :1 鼠标右键是否按下
//short x; 鼠标的x轴坐标
//short y; 鼠标的y轴坐标
//short wheel; 鼠标滚轮滚动值，为120的倍数
//键盘消息交互:
//BYTE vkcode; //按键的虚拟键码
//BYTE scancode; //按键的扫描码
//bool extended :1 //按键是否为扩充位
//bool prevdown :1 //按键的前一个状态是否按下
//字符消息的数据
// TCHAR ch;
//窗口消息的数据
//WPARAM wParam
//LPARAM lParam
//鼠标:
/*WM_MOUSEMOVE EX_MOUSE 鼠标移动消息。
WM_MOUSEWHEEL 鼠标滚轮拨动消息。
WM_LBUTTONDOWN 左键按下消息。
WM_LBUTTONUP 左键弹起消息。
WM_LBUTTONDBLCLK 左键双击消息。
WM_MBUTTONDOWN 中键按下消息。
WM_MBUTTONUP 中键弹起消息。
WM_MBUTTONDBLCLK 中键双击消息。
WM_RBUTTONDOWN 右键按下消息。
WM_RBUTTONUP 右键弹起消息。
WM_RBUTTONDBLCLK 右键双击消息。
WM_KEYDOWN EX_KEY 按键按下消息
WM_KEYUP 按键弹起消息。
WM_CHAR EX_CHAR 字符消息。
WM_ACTIVATE EX_WINDOW 窗口激活状态改变消息。
WM_MOVE 窗口移动消息。
WM_SIZE 窗口大小改变消息。*/
//键盘:
//WM_KEYDOWN; 按键按下消息
//WM_KEYUP; 按键弹起消息
initgraph(800, 600, EX_DBLCLKS); //EX_DBLCLKS:支持双击
setbkcolor(WHITE);
cleardevice();
ExMessage msg;
while (1) {
msg = getmessage(EX_MOUSE);
switch (msg.message)
{
case WM_MOUSEMOVE:
setfillcolor(BLACK);
solidcircle(msg.x, msg.y, 2);
break;
case WM_LBUTTONDOWN:
setfillcolor(RED);
if (msg.ctrl == true)
solidrectangle(msg.x - 10, msg.y - 10, msg.x + 10, msg.y + 10);
else solidcircle(msg.x, msg.y, 10);
break;
case WM_RBUTTONDOWN:
setfillcolor(BLUE);
if (msg.ctrl == true)
solidrectangle(msg.x - 10, msg.y - 10, msg.x + 10, msg.y + 10);
else solidcircle(msg.x, msg.y, 10);
break;
}
}
}
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