easyx is only for c++

在EasyX图形库中，绘制直线可以使用 `line()` 函数来实现。以下是一个使用中点画线算法在EasyX中绘制直线的示例代码： ```cpp #include <graphics.h> void drawLine(int x1, int y1, int x2, int y2) { int dx = abs(x2 - x1); int dy = abs(y2 - y1); int sx = (x1 < x2) ? 1 : -1; int sy = (y1 < y2) ? 1 : -1; int err = dx - dy; while (true) { putpixel(x1, y1, WHITE); if (x1 == x2 && y1 == y2) break; int e2 = 2 * err; if (e2 > -dy) { err -= dy; x1 += sx; if (e2 < dx) { err += dx; y1 += sy; ```

以下是基于easyx的贪吃蛇游戏C++的代码示例： ```cpp #include <graphics.h> #include <conio.h> #include <time.h> #include <stdlib.h> #define WIDTH 800 #define HEIGHT 600 #define SIZE 20 struct Snake { int x, y; struct Snake *next; struct Food { int x, y; int score = 0; int high_score = 0; int direction = VK_RIGHT; struct Snake *head, *tail; struct Food food; void init(); void draw(); void update(); void generate_food(); bool check_collision(int x, int y); void game_over(); void save_score(); void restart_game(); int main() { init(); while (true) { draw(); update(); Sleep(100); return 0; void init() { initgraph(WIDTH, HEIGHT); setbkcolor(BLACK); setcolor(WHITE); settextstyle(20, 0, _T("Consolas")); head = new Snake{WIDTH / 2, HEIGHT / 2, NULL}; tail = head; generate_food(); void draw() { cleardevice(); // 画蛇 struct Snake *p = head; while (p != NULL) { fillrectangle(p->x, p->y, p->x + SIZE, p->y + SIZE); p = p->next; // 画食物 setfillcolor(RED); fillcircle(food.x + SIZE / 2, food.y + SIZE / 2, SIZE / 2); // 画分数 TCHAR str[20]; _stprintf_s(str, _T("Score: %d"), score); outtextxy(10, 10, str); _stprintf_s(str, _T("High Score: %d"), high_score); outtextxy(10, 40, str); void update() { // 移动蛇头 int x = head->x, y = head->y; switch (direction) { case VK_LEFT: x -= SIZE; break; case VK_RIGHT: x += SIZE; break; case VK_UP: y -= SIZE; break; case VK_DOWN: y += SIZE; break; // 检查是否吃到食物 if (x == food.x && y == food.y) { score++; if (score > high_score) { high_score = score; generate_food(); } else { // 移动蛇尾 tail->x = x; tail->y = y; head->next = tail; head = tail; tail = tail->next; // 检查是否撞到墙或自己 if (x < 0 || x >= WIDTH || y < 0 || y >= HEIGHT || check_collision(x, y)) { game_over(); void generate_food() { srand((unsigned)time(NULL)); food.x = rand() % (WIDTH / SIZE) * SIZE; food.y = rand() % (HEIGHT / SIZE) * SIZE; } while (check_collision(food.x, food.y)); bool check_collision(int x, int y) { struct Snake *p = tail; while (p != head) { if (p->x == x && p->y == y) { return true; p = p->next; return false; void game_over() { save_score(); TCHAR str[20]; _stprintf_s(str, _T("Game Over! Score: %d"), score); MessageBox(NULL, str, _T("Game Over"), MB_OK); restart_game(); void save_score() { FILE *fp; fopen_s(&fp, "score.txt", "w"); fprintf_s(fp, "%d", high_score); fclose(fp); void restart_game() { score = 0; direction = VK_RIGHT; struct Snake *p = tail->next; while (p != NULL) { struct Snake *q = p; p = p->next; delete q; head = new Snake{WIDTH / 2, HEIGHT / 2, NULL}; tail = head; generate_food(); --相关问题--: