src/map.c


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#include <stdint.h>

#include "vga.h"
#include "data.h"

#include "map.h"

static const uint8_t *cmap;

void map_init(const uint8_t map[])
{
    cmap = map;
}

void map_render()
{
    const uint8_t *tiles = binary_tiles_start;
    Rect src = { 0, 0, 160, 48 };
    Rect dst = { 0, 0, 8, 8 };

    for (uint8_t y = 0; y < MAP_H; y++)
        for (uint8_t x = 0; x < MAP_W; x++)
        {
            dst.x = x * MAP_TILE_W;
            dst.y = y * MAP_TILE_H + MAP_OFFS_Y;

            uint8_t t = cmap[x + y * MAP_W];
            src.x = (t % MAP_TILESET_COLS) * MAP_TILE_W;
            src.y = (t / MAP_TILESET_COLS) * MAP_TILE_H;

            blitrc(binary_tiles_start, &src, &dst);
        }
}