#include "map.h"

#include <stdlib.h>

Map map_new(size_t width, size_t height) {
    Map map;
    map.width = 0;
    map.height = 0;

    map.tiles = malloc(sizeof(Pixel *) * height);
    if (map.tiles == NULL) return map;
    for (size_t row = 0; row < height; row++) {
        map.tiles[row] = malloc(sizeof(Pixel) * width);
        if (map.tiles[row] == NULL) {
            /* FIXME: free prev rows */
            map.tiles = NULL;
            return map;
        }
        for (size_t col = 0; col < width; col++) {
            map.tiles[row][col] = P_EMPTY;
        }
    }

    map.width = width;
    map.height = height;

    return map;
}

void map_free(Map *map) {
    if (map->tiles == NULL) goto null;

    for (size_t row = 0; row < map->height; row++)
        free(map->tiles[row]);

null:
    map->height = 0;
    map->width = 0;
    return;
}

Map map_default(void) {
    /* haha map map map */
    Map map = map_new(20, 30);

    /* Boundaries */
    for (size_t x = 0; x < map.width; x++) { /* Horizontal */
        map.tiles[0][x] = P_RED;
        map.tiles[map.height - 1][x] = P_RED;
    }
    for (size_t y = 0; y < map.height; y++) { /* Vertical */
        map.tiles[y][0] = P_RED;
        map.tiles[y][map.width - 1] = P_RED;
    }

    /* Some random pillars */
    map.tiles[5][8]  = P_GREEN;
    map.tiles[20][4] = P_GREEN;
    map.tiles[9][11] = P_GREEN;

    return map;
}