From 8ac5ac7c7786c05f4a8125b502a5c7c3bfb243f3 Mon Sep 17 00:00:00 2001
From: Marco Hladik <marco@icculus.org>
Date: Sun, 19 Apr 2020 12:01:20 +0200
Subject: [PATCH] Support for Q3-based BSP material flags - for footsteps
 anyway

---
 src/server/defs.h      |  1 +
 src/server/footsteps.c | 80 ++++++++++++++++++++++++++++++++++++++++--
 src/shared/materials.h | 46 ++++++++++++++++++++++++
 3 files changed, 125 insertions(+), 2 deletions(-)

diff --git a/src/server/defs.h b/src/server/defs.h
index cc2f4092..5eba4375 100644
--- a/src/server/defs.h
+++ b/src/server/defs.h
@@ -48,6 +48,7 @@ entity g_eAttacker;
  * we don't want this all of the time. so use this as a fallback */
 .entity real_owner;
 
+int trace_surfaceflagsi;
 string startspot;
 string __fullspawndata;
 hashtable hashMaterials;
diff --git a/src/server/footsteps.c b/src/server/footsteps.c
index 008506d6..38087fdb 100755
--- a/src/server/footsteps.c
+++ b/src/server/footsteps.c
@@ -117,6 +117,79 @@ Footsteps_VVBSP(entity target)
 {
 	string mat_name = "";
 
+	/* WIP */
+	if (target.flags & FL_ONGROUND) {
+		target.hitcontentsmaski = CONTENTBITS_POINTSOLID;
+		tracebox(target.origin, target.mins, target.maxs, (target.origin + [0,0,-16]), MOVE_NORMAL, target);
+		target.hitcontentsmaski = 0;
+		trace_surfaceflagsi &= ~SURF_MASK;
+
+		switch (trace_surfaceflagsi) {
+		case SURF_ALIEN:
+			mat_name = "step_alien";
+			break;
+		case SURF_FLESH:
+			mat_name = "step_flesh";
+			break;
+		case SURF_FOLIAGE:
+			mat_name = "step_foliage";
+			break;
+		case SURF_COMPUTER:
+			mat_name = "step_computer";
+			break;
+		case SURF_DIRT:
+			mat_name = "step_dirt";
+			break;
+		case SURF_VENT:
+			mat_name = "step_vent";
+			break;
+		case SURF_GRATE:
+			mat_name = "step_grate";
+			break;
+		case SURF_METAL:
+			mat_name = "step_metal";
+			break;
+		case SURF_GLASS:
+			mat_name = "step_glass";
+			break;
+		case SURF_SAND:
+			mat_name = "step_sand";
+			break;
+		case SURF_SLOSH:
+			mat_name = "step_slosh";
+			break;
+		case SURF_SNOW:
+			mat_name = "step_snow";
+			break;
+		case SURF_TILE:
+			mat_name = "step_tile";
+			break;
+		case SURF_WOOD:
+			mat_name = "step_wood";
+			break;
+		case SURF_CONCRETE:
+			mat_name = "step_concrete";
+			break;
+		default:
+			mat_name = "step_default";
+		}
+	} else if (target.flags & FL_ONLADDER) {
+		mat_name = "step_ladder";
+	}
+
+	if (target.iStep) {
+		Sound_Play(target, CHAN_BODY, sprintf("%s.left", mat_name));
+	} else {
+		Sound_Play(target, CHAN_BODY, sprintf("%s.right", mat_name));
+	}
+}
+
+/* anything unsupported */
+void
+Footsteps_Default(entity target)
+{
+	string mat_name = "";
+
 	/* WIP */
 	if (target.flags & FL_ONGROUND) {
 		mat_name = "step_default";
@@ -156,13 +229,16 @@ Footsteps_Update(void)
 		self.fStepTime = time + 0.35;
 
 		switch (serverkeyfloat("*bspversion")) {
-		case 30:
+		case 30: /* HL */
 			Footsteps_HLBSP(self);
 			break;
-		case 1:
+		case 46: /* Q3 */
+		case 47: /* RtCW */
+		case 1: /* RFVBSP */
 			Footsteps_VVBSP(self);
 			break;
 		default:
+			Footsteps_Default(self);
 		}
 
 		/* switch between feet */
diff --git a/src/shared/materials.h b/src/shared/materials.h
index 4e0a03e3..8b331788 100644
--- a/src/shared/materials.h
+++ b/src/shared/materials.h
@@ -26,3 +26,49 @@ enum
 	IMPACT_FLESH,
 	IMPACT_ROCK
 };
+
+
+/* TW/NEXT specific game flags */
+
+/* q3 bsp base flags */
+#define SURF_NODAMAGE		0x1i		// never give falling damage
+#define SURF_SLICK			0x2i		// effects game physics
+#define SURF_SKY			0x4i		// lighting from environment map
+#define SURF_LADDER			0x8i		// climb this surface
+#define SURF_NOIMPACT		0x10i		// don't make missile explosions
+#define SURF_NOMARKS		0x20i		// don't leave missile marks
+#define SURF_FLESH			0x40i		// make flesh sounds and effects
+#define SURF_NODRAW			0x80i		// don't generate a drawsurface at all
+#define SURF_HINT			0x100i		// make a primary bsp splitter
+#define SURF_SKIP			0x200i		// completely ignore, allowing non-closed brushes
+#define SURF_NOLIGHTMAP		0x400i		// surface doesn't need a lightmap
+#define SURF_POINTLIGHT		0x800i		// generate lighting info at vertexes
+#define SURF_METALSTEPS		0x1000i		// clanking footsteps
+#define SURF_NOSTEPS		0x2000i		// no footstep sounds
+#define SURF_NONSOLID		0x4000i		// don't collide against curves with this set
+#define SURF_LIGHTFILTER	0x8000i		// act as a light filter during q3map -light
+#define SURF_ALPHASHADOW	0x10000i	// do per-pixel light shadow casting in q3map
+#define SURF_NODLIGHT		0x20000i	// don't dlight even if solid (solid lava, skies)
+#define SURF_DUST			0x40000i	// leave a dust trail when walking on this surface
+
+// behaviour surfaceflags
+#define SURF_LEAKSTEAM		0x80000i	/* surface shoots steam when hit */
+#define SURF_LEAKWATER		0x100000i	/* surface sprays water when hit */
+
+// material surfaceflags
+#define SURF_MASK		0x0FFFFFFFi
+#define SURF_ALIEN		0x10000000i
+#define SURF_FLESH		0x20000000i
+#define SURF_FOLIAGE	0x30000000i
+#define SURF_COMPUTER	0x40000000i
+#define SURF_DIRT		0x50000000i
+#define SURF_VENT		0x60000000i
+#define SURF_GRATE		0x70000000i
+#define SURF_METAL		0x80000000i
+#define SURF_GLASS		0x90000000i
+#define SURF_SAND		0xA0000000i
+#define SURF_SLOSH		0xB0000000i
+#define SURF_SNOW		0xC0000000i
+#define SURF_TILE		0xD0000000i
+#define SURF_WOOD		0xE0000000i
+#define SURF_CONCRETE	0xF0000000i