[Feature Request] Add "Export Tilemap" Function

[dannye]

It would be handy to quickly be able to export a blk file as a tilemap.

Obviously it's not algorithmically challenging, but here's a python script to demonstrate what I mean:

blktotilemap.py

```python #!/usr/bin/env python import argparse if __name__ == "__main__": ap = argparse.ArgumentParser(description="Convert blk files to tilemaps") ap.add_argument("-b", "--bst", default="gfx/blocksets/overworld.bst", help="blockset to use") ap.add_argument("-w", "--width", required=True, help="width of blk file") ap.add_argument("blk", help="blk file to convert") args = ap.parse_args() bst_file = bytearray(open(args.bst, "rb").read()) num_bst_blocks = len(bst_file) // 16 blk_file = bytearray(open(args.blk, "rb").read()) num_blk_blocks = len(blk_file) tilemap = bytearray([0 for x in range(num_blk_blocks * 16)]) width = int(args.width) height = num_blk_blocks // width for block_y in range(height): for block_x in range(width): block_index = block_y * width + block_x block_id = blk_file[block_index] assert block_id < num_bst_blocks block_tiles = bst_file[block_id * 16:(block_id + 1) * 16] base_y = block_y * 4 base_x = block_x * 4 for tile_y in range(4): for tile_x in range(4): tile_index = (base_y + tile_y) * (width * 4) + (base_x + tile_x) tilemap[tile_index] = block_tiles[tile_y * 4 + tile_x] out_file = open(args.blk + ".tilemap", "wb") out_file.write(tilemap) out_file.close() ```

For example, it turns this blk file:

Into this tilemap: