struct Tile {
uint16_t pos[2];
uint16_t size[2];
}
struct MST {
char magic[4]; // always "MST\0"
uint32_t data_size;
uint32_t version; // should be 100
uint32_t image_size[2]; // width and height of base image
uint32_t num_tiles; // number of tiles/subsprites
Tile tiles[num_tiles];
}