/*
	sprintgn.h

	header file for sprite generation program

	Copyright (C) 1996-1997  Id Software, Inc.

	This program is free software; you can redistribute it and/or
	modify it under the terms of the GNU General Public License
	as published by the Free Software Foundation; either version 2
	of the License, or (at your option) any later version.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

	See the GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with this program; if not, write to:

		Free Software Foundation, Inc.
		59 Temple Place - Suite 330
		Boston, MA  02111-1307, USA

	$Id$
*/
// **********************************************************
// * This file must be identical in the spritegen directory *
// * and in the Quake directory, because it's used to       *
// * pass data from one to the other via .spr files.        *
// **********************************************************

//-------------------------------------------------------
// This program generates .spr sprite package files.
// The format of the files is as follows:
//
// dsprite_t file header structure
// <repeat dsprite_t.numframes times>
//   <if spritegroup, repeat dspritegroup_t.numframes times>
//     dspriteframe_t frame header structure
//     sprite bitmap
//   <else (single sprite frame)>
//     dspriteframe_t frame header structure
//     sprite bitmap
// <endrepeat>
//-------------------------------------------------------

#ifndef _SPRITEGN_H
#define _SPRITEGN_H

#define SPR_VERSION		1
#define SP2_VERSION		2

// must match definition in modelgen.h
#ifndef SYNCTYPE_T
#define SYNCTYPE_T
typedef enum {ST_SYNC=0, ST_RAND } synctype_t;
#endif

// TODO: shorten these?
typedef struct {
	int			ident;
	int			version;
	int			type;
	float		boundingradius;
	int			width;
	int			height;
	int			numframes;
	float		beamlength;
	synctype_t	synctype;
} dsprite_t;

#define SPR_VP_PARALLEL_UPRIGHT		0
#define SPR_FACING_UPRIGHT			1
#define SPR_VP_PARALLEL				2
#define SPR_ORIENTED				3
#define SPR_VP_PARALLEL_ORIENTED	4

typedef struct {
	int			origin[2];
	int			width;
	int			height;
} dspriteframe_t;

typedef struct {
	int			numframes;
} dspritegroup_t;

typedef struct {
	float	interval;
} dspriteinterval_t;

typedef enum { SPR_SINGLE=0, SPR_GROUP } spriteframetype_t;

typedef struct {
	spriteframetype_t	type;
} dspriteframetype_t;

// little-endian "IDSP"
#define IDHEADER_SPR	(('P'<<24)+('S'<<16)+('D'<<8)+'I')

// little-endian "IDS2"
#define IDHEADER_SP2 (('2'<<24)+('S'<<16)+('D'<<8)+'I')

#endif // _SPRITEGN_H
