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#define REACTION_SURF_GRAVEL 0x80000
-#define REACTION_SURF_WOOD 0x81000
+#define REACTION_SURF_WOOD 0x81000
#define REACTION_SURF_CARPET 0x100000
#define REACTION_SURF_METAL2 0x101000
-#define REACTION_SURF_GLASS 0x180000
-#define REACTION_SURF_GRASS 0x181000
-#define REACTION_SURF_SNOW 0x200000
-#define REACTION_SURF_MUD 0x201000
-#define REACTION_SURF_WOOD2 0x280000
+#define REACTION_SURF_GLASS 0x180000
+#define REACTION_SURF_GRASS 0x181000
+#define REACTION_SURF_SNOW 0x200000
+#define REACTION_SURF_MUD 0x201000
+#define REACTION_SURF_WOOD2 0x280000
#define REACTION_SURF_HARDMETAL 0x281000
#define REACTION_SURF_LEAVES 0x300000
#define REACTION_SURF_CEMENT 0x301000
#define REACTION_SURF_MARBLE 0x380000
-#define REACTION_SURF_SNOW2 0x381000
+#define REACTION_SURF_SNOW2 0x381000
#define REACTION_SURF_HARDSTEPS 0x400000
-#define REACTION_SURF_SAND 0x401000
+#define REACTION_SURF_SAND 0x401000