idea for an extended Ace of Spades map header

gistfile1.txt

// An idea for an extended map header for Ace of Spades.
struct aos_maphead
{
	char magic[8];
	// "AoS~MAP\x1A"
	// it's been carefully picked to obviously not be headerless
	
	uint32_t fmt_version;
	// work out your own version scheme
	// I suggest just using "1" to start with
	// and incrementing it when the format changes
	
	uint32_t min_version;
	// this is the minimum format version required to support this map
	
	uint32_t eheader_size;
	// size of extended header
	
	// start of "extended header"
	
	uint32_t tag_count;
	// number of tags used in header
	
	struct aos_tag taglist[tag_count];
	// various tags that can be applied
	
	// end of "extended header"
};

struct aos_map_tag
{
	char magic[4]; // "magic number"
	uint32_t size; // size of data[]
	char data[size]; // corresponds to struct aos_map_tag_* data
};

struct aos_map_tag_dims
{
	// MAGIC: "DIMS"
	
	uint16_t width, height;
	// DEFAULT: 512, 512
	// some maximum must be given...
	// 512x512 would be a good maximum
	// it's already huge enough as it is
};

struct aos_map_tag_fog
{
	// MAGIC: "FOG "
	
	int32_t default_fog;
	// in 0x00RRGGBB format
};

struct aos_map_tag_name
{
	// MAGIC: "Name"
	
	asciiz s_map_name;
	// name of map
};

struct aos_map_tag_author
{
	// MAGIC: "Auth"
	
	asciiz s_map_author;
	// who made this damn thing
};

struct aos_map_tag_comment
{
	// MAGIC: "Comt"
	
	asciiz s_map_comment;
	// any comments this map needs
};

// you don't need to implement these just yet.
struct aos_map_tag_spawn
{
	// MAGIC: "SPWN"
	
	uint32_t type;
	// type of thing to spawn
	// e.g. 0 = player, 1 = tent, 2 = intel
	
	uint32_t team;
	// team this thing is for
	// e.g. 0 = none, 1 = blue, 2 = green
	
	uint32_t id;
	// if a specific index is needed, use this
	// e.g. tents for TC
	
	uint16_t x1,y1,x2,y2;
	// range to spawn thing:
	// x1 <= x < x2
	// y1 <= y < y2
};