Draw lava, slime and teleporters as liquids, but not transparent.

main.cpp

@@ -156,7 +156,11 @@ int process_faces(const world_t* world, const std::vector<ps1bsp_texture_t>& tex
 		// Draw water as fullbright transparent surfaces
 		if (miptex->name[0] == '*')
 		{
-			outFace->flags |= SURF_DRAWTURB | SURF_DRAWWATER;
+			// Detect special liquid types that should not be transparent
+			if (strncmp(miptex->name, "*lava", 5) && strncmp(miptex->name, "*slime", 6) && strncmp(miptex->name, "*tele", 5))
+				outFace->flags |= SURF_DRAWWATER;
+
+			outFace->flags |= SURF_DRAWLIQUID;
 		}
 
 		auto polygons = tesselator.tesselateFace(face);

ps1bsp.h

@@ -85,7 +85,7 @@ typedef struct
 } ps1bsp_facevertex_t;
 
 #define SURF_DRAWSKY		0x2
-#define SURF_DRAWTURB		0x4
+#define SURF_DRAWLIQUID		0x4
 #define SURF_DRAWWATER		0x8
 
 // High quality: Face -> polygons -> polygon vertex indices (index + UV + light) -> vertices