pvjc24/a2/snake.c

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

// Inicializuje stav hry
void init_state(struct state* state, int width, int height) {
    state->width = width;
    state->height = height;
    state->snake = add_snake(NULL, width / 2, height / 2);
    state->sx = 0;
    state->sy = 1;
    for(int i = 0; i < FOOD_COUNT; i++) {
        state->foodx[i] = rand() % width;
        state->foody[i] = rand() % height;
    }
}

// Generuje nové jedlo na náhodnej pozícii
void generate_food(struct state* state) {
    for(int i = 0; i < FOOD_COUNT; i++) {
        if(state->foodx[i] == -1) {
            do {
                state->foodx[i] = rand() % state->width;
                state->foody[i] = rand() % state->height;
            } while(is_snake(state->snake, state->foodx[i], state->foody[i]));
        }
    }
}

// Vykresli stav hry
void draw_state(struct state* state) {
    for(int y = 0; y < state->height; y++) {
        for(int x = 0; x < state->width; x++) {
            if(is_snake(state->snake, x, y)) {
                printf("S");
            } else {
                int is_food = 0;
                for(int i = 0; i < FOOD_COUNT; i++) {
                    if(state->foodx[i] == x && state->foody[i] == y) {
                        is_food = 1;
                        break;
                    }
                }
                printf(is_food ? "F" : ".");
            }
        }
        printf("\n");
    }
}

// Spracuje vstup od hráča
void process_input(struct state* state) {
    char input = getchar();
    switch(input) {
        case 'w': state->sx = 0; state->sy = -1; break;
        case 'a': state->sx = -1; state->sy = 0; break;
        case 's': state->sx = 0; state->sy = 1; break;
        case 'd': state->sx = 1; state->sy = 0; break;
    }
}

// Hlavná slučka hry
void game_loop(struct state* state) {
    while(1) {
        draw_state(state);
        process_input(state);
        int result = step_state(state);
        if(result == END_WALL || result == END_SNAKE) {
            printf("Game over!\n");
            break;
        }
        if(result == END_FOOD) {
            generate_food(state);
        }
    }
}

int main() {
    srand(time(NULL));
    struct state state;
    init_state(&state, 20, 20);
    game_loop(&state);
    free_snake(state.snake);
    return 0;
}