Quake: attempt 2duke3d

Change-Id: I4285036e967d7f0722802d43cf2096c808ca5799

1 files changed, 89 insertions, 0 deletions

diff --git a/apps/plugins/sdl/progs/quake/mathlib.h b/apps/plugins/sdl/progs/quake/mathlib.h
new file mode 100644
index 0000000..b5506e2
--- /dev/null
+++ b/apps/plugins/sdl/progs/quake/mathlib.h
@@ -0,0 +1,89 @@
+/*
+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 the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+*/
+// mathlib.h
+
+typedef float vec_t;
+typedef vec_t vec3_t[3];
+typedef vec_t vec5_t[5];
+
+typedef	int	fixed4_t;
+typedef	int	fixed8_t;
+typedef	int	fixed16_t;
+
+#ifndef M_PI
+#define M_PI		3.14159265358979323846	// matches value in gcc v2 math.h
+#endif
+
+struct mplane_s;
+
+extern vec3_t vec3_origin;
+extern	int nanmask;
+
+#define	IS_NAN(x) (((*(int *)&x)&nanmask)==nanmask)
+
+#define DotProduct(x,y) (x[0]*y[0]+x[1]*y[1]+x[2]*y[2])
+#define VectorSubtract(a,b,c) {c[0]=a[0]-b[0];c[1]=a[1]-b[1];c[2]=a[2]-b[2];}
+#define VectorAdd(a,b,c) {c[0]=a[0]+b[0];c[1]=a[1]+b[1];c[2]=a[2]+b[2];}
+#define VectorCopy(a,b) {b[0]=a[0];b[1]=a[1];b[2]=a[2];}
+
+void VectorMA (vec3_t veca, float scale, vec3_t vecb, vec3_t vecc);
+
+vec_t _DotProduct (vec3_t v1, vec3_t v2);
+void _VectorSubtract (vec3_t veca, vec3_t vecb, vec3_t out);
+void _VectorAdd (vec3_t veca, vec3_t vecb, vec3_t out);
+void _VectorCopy (vec3_t in, vec3_t out);
+
+int VectorCompare (vec3_t v1, vec3_t v2);
+vec_t Length (vec3_t v);
+void CrossProduct (vec3_t v1, vec3_t v2, vec3_t cross);
+float VectorNormalize (vec3_t v);		// returns vector length
+void VectorInverse (vec3_t v);
+void VectorScale (vec3_t in, vec_t scale, vec3_t out);
+int Q_log2(int val);
+
+void R_ConcatRotations (float in1[3][3], float in2[3][3], float out[3][3]);
+void R_ConcatTransforms (float in1[3][4], float in2[3][4], float out[3][4]);
+
+void FloorDivMod (double numer, double denom, int *quotient,
+		int *rem);
+fixed16_t Invert24To16(fixed16_t val);
+int GreatestCommonDivisor (int i1, int i2);
+
+void AngleVectors (vec3_t angles, vec3_t forward, vec3_t right, vec3_t up);
+int BoxOnPlaneSide (vec3_t emins, vec3_t emaxs, struct mplane_s *plane);
+float	anglemod(float a);
+
+
+
+#define BOX_ON_PLANE_SIDE(emins, emaxs, p)	\
+	(((p)->type < 3)?						\
+	(										\
+		((p)->dist <= (emins)[(p)->type])?	\
+			1								\
+		:									\
+		(									\
+			((p)->dist >= (emaxs)[(p)->type])?\
+				2							\
+			:								\
+				3							\
+		)									\
+	)										\
+	:										\
+		BoxOnPlaneSide( (emins), (emaxs), (p)))