From 8e543b264d0f11f90cefd58ba407ca1ec041d413 Mon Sep 17 00:00:00 2001
From: Bill Currie <bill@taniwha.org>
Date: Wed, 28 Mar 2001 07:37:14 +0000
Subject: [PATCH] compat.h: 	add defines for offsetof and varsizeof (could
 do with a better name. one 	possibility is varcalcsize). mdl_sprite.h: 
 initial stab at the shared sprite model loader. The gl texture is NOT 
 created but everything should be in a sane state to do so.

---
 include/compat.h     |  6 ++++
 include/mdl_sprite.h | 66 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 72 insertions(+)
 create mode 100644 include/mdl_sprite.h

diff --git a/include/compat.h b/include/compat.h
index 71b9353ff..65f7158ef 100644
--- a/include/compat.h
+++ b/include/compat.h
@@ -88,4 +88,10 @@ extern int vsnprintf(char *s, size_t maxlen, const char *format, va_list arg);
 # define strncaseequal(a,b,c) (strncasecmp (a, b, c) == 0)
 #endif
 
+#if !defined(offsetof)
+# define offsetof(t,f) ((size_t)&((t *)0)->f)
+#endif
+
+#define varsizeof(t,f,c) ((size_t)offsetof(t,f[c]))
+
 #endif // __compat_h
diff --git a/include/mdl_sprite.h b/include/mdl_sprite.h
new file mode 100644
index 000000000..96607dc7f
--- /dev/null
+++ b/include/mdl_sprite.h
@@ -0,0 +1,66 @@
+/*
+	mdl_sprit.h
+
+	sprite model structures
+
+	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
+
+	$Id$
+*/
+
+#ifndef __mdl_sprite_h
+#define __mdl_sprite_h
+
+#include "qtypes.h"
+#include "spritegn.h"
+
+// FIXME: shorten these?
+typedef struct mspriteframe_s
+{
+	float			up, down, left, right;
+	int				gl_texturenum;
+	struct tex_s	*texture;
+} mspriteframe_t;
+
+typedef struct
+{
+	int				numframes;
+	float			*intervals;
+	mspriteframe_t	*frames[1];
+} mspritegroup_t;
+
+typedef struct
+{
+	spriteframetype_t	type;
+	mspriteframe_t		*frameptr;
+} mspriteframedesc_t;
+
+typedef struct
+{
+	int					type;
+	int					maxwidth;
+	int					maxheight;
+	int					numframes;
+	float				beamlength;
+	mspriteframedesc_t	frames[1];
+} msprite_t;
+
+#endif	// __mdl_sprite_h