用c语言写一个飞机大战小游戏

好的，以下是一个简单的飞机大战小游戏，基于C语言和SDL库实现：

#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <SDL2/SDL.h>

#define SCREEN_WIDTH 640
#define SCREEN_HEIGHT 480
#define ENEMY_COUNT 10
#define BULLET_COUNT 10

// 定义游戏对象
typedef struct {
    SDL_Texture *texture;
    int x;
    int y;
    int width;
    int height;
    int speed;
} GameObject;

// 初始化SDL
bool initSDL();

// 加载纹理
SDL_Texture* loadTexture(const char* path, SDL_Renderer* renderer);

// 绘制游戏对象
void renderGameObject(GameObject* gameObject, SDL_Renderer* renderer);

// 创建游戏对象
GameObject* createGameObject(const char* path, int x, int y, int width, int height, int speed, SDL_Renderer* renderer);

// 销毁游戏对象
void destroyGameObject(GameObject* gameObject);

// 移动游戏对象
void moveGameObject(GameObject* gameObject, int x, int y);

// 检测碰撞
bool checkCollision(GameObject* gameObject1, GameObject* gameObject2);

int main(int argc, char* args[]) {
    if (!initSDL()) {
        printf("Failed to initialize SDL\n");
        return -1;
    }

    SDL_Window* window = SDL_CreateWindow("Plane War", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN);
    if (!window) {
        printf("Failed to create window\n");
        return -1;
    }

    SDL_Renderer* renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
    if (!renderer) {
        printf("Failed to create renderer\n");
        return -1;
    }

    // 创建游戏对象
    GameObject* playerPlane = createGameObject("player.bmp", SCREEN_WIDTH / 2, SCREEN_HEIGHT - 50, 50, 50, 5, renderer);
    GameObject* enemyPlanes[ENEMY_COUNT];
    for (int i = 0; i < ENEMY_COUNT; ++i) {
        enemyPlanes[i] = createGameObject("enemy.bmp", rand() % SCREEN_WIDTH, rand() % SCREEN_HEIGHT, 50, 50, 3, renderer);
    }
    GameObject* bullets[BULLET_COUNT];
    for (int i = 0; i < BULLET_COUNT; ++i) {
        bullets[i] = createGameObject("bullet.bmp", -100, -100, 10, 20, 10, renderer);
    }

    bool quit = false;
    SDL_Event event;
    int score = 0;
    while (!quit) {
        while (SDL_PollEvent(&event)) {
            if (event.type == SDL_QUIT) {
                quit = true;
            }
            else if (event.type == SDL_KEYDOWN) {
                switch (event.key.keysym.sym) {
                    case SDLK_LEFT:
                        moveGameObject(playerPlane, -playerPlane->speed, 0);
                        break;
                    case SDLK_RIGHT:
                        moveGameObject(playerPlane, playerPlane->speed, 0);
                        break;
                    case SDLK_UP:
                        moveGameObject(playerPlane, 0, -playerPlane->speed);
                        break;
                    case SDLK_DOWN:
                        moveGameObject(playerPlane, 0, playerPlane->speed);
                        break;
                    case SDLK_SPACE:
                        for (int i = 0; i < BULLET_COUNT; ++i) {
                            if (bullets[i]->y < 0) {
                                bullets[i]->x = playerPlane->x + playerPlane->width / 2 - bullets[i]->width / 2;
                                bullets[i]->y = playerPlane->y - bullets[i]->height;
                                break;
                            }
                        }
                        break;
                }
            }
        }

        // 移动子弹
        for (int i = 0; i < BULLET_COUNT; ++i) {
            if (bullets[i]->y < 0) {
                continue;
            }
            bullets[i]->y -= bullets[i]->speed;
            if (bullets[i]->y < 0) {
                bullets[i]->x = -100;
                bullets[i]->y = -100;
            }
        }

        // 移动敌机
        for (int i = 0; i < ENEMY_COUNT; ++i) {
            enemyPlanes[i]->y += enemyPlanes[i]->speed;
            if (enemyPlanes[i]->y > SCREEN_HEIGHT) {
                enemyPlanes[i]->x = rand() % SCREEN_WIDTH;
                enemyPlanes[i]->y = rand() % SCREEN_HEIGHT - 50;
            }

            // 检测碰撞
            if (checkCollision(playerPlane, enemyPlanes[i])) {
                printf("Game Over! Score: %d\n", score);
                quit = true;
                break;
            }

            for (int j = 0; j < BULLET_COUNT; ++j) {
                if (bullets[j]->y < 0) {
                    continue;
                }
                if (checkCollision(enemyPlanes[i], bullets[j])) {
                    enemyPlanes[i]->x = rand() % SCREEN_WIDTH;
                    enemyPlanes[i]->y = rand() % SCREEN_HEIGHT - 50;
                    bullets[j]->x = -100;
                    bullets[j]->y = -100;
                    score += 10;
                    break;
                }
            }
        }

        // 绘制背景
        SDL_SetRenderDrawColor(renderer, 0xFF, 0xFF, 0xFF, 0xFF);
        SDL_RenderClear(renderer);

        // 绘制游戏对象
        renderGameObject(playerPlane, renderer);
        for (int i = 0; i < ENEMY_COUNT; ++i) {
            renderGameObject(enemyPlanes[i], renderer);
        }
        for (int i = 0; i < BULLET_COUNT; ++i) {
            renderGameObject(bullets[i], renderer);
        }

        SDL_RenderPresent(renderer);
    }

    // 销毁游戏对象
    destroyGameObject(playerPlane);
    for (int i = 0; i < ENEMY_COUNT; ++i) {
        destroyGameObject(enemyPlanes[i]);
    }
    for (int i = 0; i < BULLET_COUNT; ++i) {
        destroyGameObject(bullets[i]);
    }

    // 退出SDL
    SDL_DestroyRenderer(renderer);
    SDL_DestroyWindow(window);
    SDL_Quit();

    return 0;
}

bool initSDL() {
    if (SDL_Init(SDL_INIT_VIDEO) < 0) {
        printf("Failed to initialize SDL: %s\n", SDL_GetError());
        return false;
    }

    return true;
}

SDL_Texture* loadTexture(const char* path, SDL_Renderer* renderer) {
    SDL_Surface* surface = SDL_LoadBMP(path);
    if (!surface) {
        printf("Failed to load image %s: %s\n", path, SDL_GetError());
        return NULL;
    }

    SDL_Texture* texture = SDL_CreateTextureFromSurface(renderer, surface);
    if (!texture) {
        printf("Failed to create texture from %s: %s\n", path, SDL_GetError());
        return NULL;
    }

    SDL_FreeSurface(surface);

    return texture;
}

void renderGameObject(GameObject* gameObject, SDL_Renderer* renderer) {
    SDL_Rect rect = { gameObject->x, gameObject->y, gameObject->width, gameObject->height };
    SDL_RenderCopy(renderer, gameObject->texture, NULL, &rect);
}

GameObject* createGameObject(const char* path, int x, int y, int width, int height, int speed, SDL_Renderer* renderer) {
    GameObject* gameObject = (GameObject*)malloc(sizeof(GameObject));
    gameObject->texture = loadTexture(path, renderer);
    gameObject->x = x;
    gameObject->y = y;
    gameObject->width = width;
    gameObject->height = height;
    gameObject->speed = speed;
    return gameObject;
}

void destroyGameObject(GameObject* gameObject) {
    SDL_DestroyTexture(gameObject->texture);
    free(gameObject);
}

void moveGameObject(GameObject* gameObject, int x, int y) {
    gameObject->x += x;
    gameObject->y += y;

    if (gameObject->x < 0) {
        gameObject->x = 0;
    }
    if (gameObject->x + gameObject->width > SCREEN_WIDTH) {
        gameObject->x = SCREEN_WIDTH - gameObject->width;
    }
    if (gameObject->y < 0) {
        gameObject->y = 0;
    }
    if (gameObject->y + gameObject->height > SCREEN_HEIGHT) {
        gameObject->y = SCREEN_HEIGHT - gameObject->height;
    }
}

bool checkCollision(GameObject* gameObject1, GameObject* gameObject2) {
    if (gameObject1->x + gameObject1->width < gameObject2->x ||
        gameObject1->x > gameObject2->x + gameObject2->width ||
        gameObject1->y + gameObject1->height < gameObject2->y ||
        gameObject1->y > gameObject2->y + gameObject2->height) {
        return false;
    }
    return true;
}

在上述代码中，我们使用了SDL库来实现游戏的绘制和事件处理。具体来说，我们创建了三种游戏对象：玩家飞机、敌机和子弹。玩家飞机可以通过键盘控制上下左右移动，按下空格键可以发射子弹；敌机和子弹会自动移动，当敌机和子弹相撞时，敌机会被重新生成到随机位置，子弹则会消失；当玩家飞机和敌机相撞时，游戏结束。