pvjc24/a2/snake.c

#include <stdlib.h>
#include <curses.h>
#include <string.h>
#include "world.h"

// Game state structure
struct state {
    int width;
    int height;
    int sx;
    int sy;
    struct snake* snake;
    int foodx[5];
    int foody[5];
};

// Initialize game state
void* init_game() {
    struct state* st = calloc(1, sizeof(struct state));
    return st;
}

// Initialize game state
void init_snake(struct event* world, struct state* st) {
    int cy = world->height / 2;
    int cx = world->width / 2 - 5;
    for (int i = 0; i < 5; i++) {
        st->snake = add_snake(st->snake, cx + i, cy);
    }

    int h = world->height;
    int w = world->width;
    for (int i = 0; i < 5; i++) {
        st->foodx[i] = rand() % w;
        st->foody[i] = rand() % h;
    }
    st->sx = 1;
    st->sy = 0;
}

// Handle game events
int world_event(struct event* w, void* game) {
    struct state* st = game;
    if (w->type == EVENT_START) {
        init_snake(w, st);
    } else if (w->type == EVENT_KEY) {
        int key = w->key;
        if (key == KEY_RIGHT) {
            st->sx = 1;
            st->sy = 0;
        } else if (key == KEY_LEFT) {
            st->sx = -1;
            st->sy = 0;
        } else if (key == KEY_DOWN) {
            st->sx = 0;
            st->sy = 1;
        } else if (key == KEY_UP) {
            st->sx = 0;
            st->sy = -1;
        }
    } else if (w->type == EVENT_ESC) {
        return 1;
    } else if (w->type == EVENT_TIMEOUT) {
        clear_screen();
        st->width = w->width;
        st->height = w->height;
        int r = step_state(st);
        char ms[200];
        sprintf(ms, "r %d\n", r);
        set_message(ms, 9, 9);
        struct snake* sn = st->snake;
        while (sn != NULL) {
            set_cell('x', sn->x, sn->y);
            sn = sn->next;
        }
        for (int i = 0; i < FOOD_COUNT; i++) {
            if (st->foodx[i] >= 0 && st->foody[i] >= 0) {
                set_cell('*', st->foodx[i], st->foody[i]);
            }
        }
        if (r) {
            char message[] = "Koniec";
            set_message(message, 10, 10);
        }
    }
    return 0;
}