C语言实战演练之游戏框架

#include <conio.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <windows.h>
 
#define WIDTH 50
#define HEIGHT 25
 
int snake_x[WIDTH * HEIGHT], snake_y[WIDTH * HEIGHT];
int food_x, food_y;
int snake_length;
int score;
int direction;
 
void gotoxy(int x, int y) {
    COORD coord;
    coord.X = x;
    coord.Y = y;
    SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), coord);
}
 
void generate_food() {
    srand((unsigned)time(NULL));
    food_x = rand() % (WIDTH - 2) + 1;
    food_y = rand() % (HEIGHT - 2) + 1;
}
 
void draw() {
    system("cls");
    for (int i = 0; i < WIDTH; i++) {
        printf("#");
    }
    printf("
");
 
    for (int i = 1; i < HEIGHT - 1; i++) {
        printf("#");
        for (int j = 1; j < WIDTH - 1; j++) {
            if (i == food_y && j == food_x) {
                printf("*");
            } else {
                int is_snake = 0;
                for (int k = 0; k < snake_length; k++) {
                    if (i == snake_y[k] && j == snake_x[k]) {
                        printf("O");
                        is_snake = 1;
                        break;
                    }
                }
                if (!is_snake) {
                    printf(" ");
                }
            }
        }
        printf("#
");
    }
 
    for (int i = 0; i < WIDTH; i++) {
        printf("#");
    }
    printf("
");
    printf("Score: %d", score);
}
 
void update() {
    int prev_x = snake_x[0], prev_y = snake_y[0];
    int prev2_x, prev2_y;
    switch (direction) {
        case 0: // Up
            snake_y[0]--;
            break;
        case 1: // Down
            snake_y[0]++;
            break;
        case 2: // Right
            snake_x[0]++;
            break;
        case 3: // Left
            snake_x[0]--;
            break;
    }
    for (int i = 1; i < snake_length; i++) {
        prev2_x = snake_x[i];
        prev2_y = snake_y[i];
        snake_x[i] = prev_x;
        snake_y[i] = prev_y;
        prev_x = prev2_x;
        prev_y = prev2_y;
    }
    if (snake_x[0] == food_x && snake_y[0] == food_y) {
        score += 10;
        snake_length++;
        generate_food();
    }
}