CCollision done and fixes

src/core/SurfaceTable.h

@@ -53,6 +53,41 @@ enum
 
 struct CColPoint;
 
+inline bool
+IsSeeThrough(uint8 surfType)
+{
+	switch(surfType)
+	case SURFACE_GLASS:
+	case SURFACE_TRANSPARENT_CLOTH:
+	case SURFACE_METAL_CHAIN_FENCE:
+	case SURFACE_TRANSPARENT_STONE:
+	case SURFACE_SCAFFOLD_POLE:
+		return true;
+	return false;
+}
+
+// I think the necessity of this function is really a bug
+inline bool
+IsSeeThroughVertical(uint8 surfType)
+{
+	switch(surfType)
+	case SURFACE_GLASS:
+	case SURFACE_TRANSPARENT_CLOTH:
+		return true;
+	return false;
+}
+
+inline bool
+IsShootThrough(uint8 surfType)
+{
+	switch(surfType)
+	case SURFACE_METAL_CHAIN_FENCE:
+	case SURFACE_TRANSPARENT_STONE:
+	case SURFACE_SCAFFOLD_POLE:
+		return true;
+	return false;
+}
+
 class CSurfaceTable
 {
 	static float ms_aAdhesiveLimitTable[NUMADHESIVEGROUPS][NUMADHESIVEGROUPS];