rename and unify return values for digging

code/__DEFINES/turfs.dm

@@ -11,5 +11,5 @@
 /// Returns a list of around us
 #define TURF_NEIGHBORS(turf) (CORNER_BLOCK_OFFSET(turf, 3, 3, -1, -1) - turf)
 
-#define ORE_PREVENT_DIG	0	//! A turf with ore in it should not be changed when mined.
-#define ORE_ALLOW_DIG	1	//! A turf with ore in it should be dug out when mined.
+#define MINERAL_PREVENT_DIG	0	//! A mineral turf should not be changed when mined.
+#define MINERAL_ALLOW_DIG	1	//! A mineral turf should be dug out when mined.

code/datums/ores.dm

@@ -10,8 +10,13 @@
 	/// The icon state of the ore used for mining scanner overlays.
 	var/scan_icon_state = ""
 
-/// Called when the containing turf is "mined", such as with a pickaxe or other digging implement.
-/// Returns [ORE_ALLOW_DIG] if the containing turf should be changed to its "dug" state, [ORE_PREVENT_DIG] if it should remain as is.
+/**
+ * Called when the containing turf is "mined", such as with a pickaxe or other
+ * digging implement.
+ *
+ * Returns [MINERAL_ALLOW_DIG] if the containing turf should be changed to its
+ * "dug" state, [MINERAL_PREVENT_DIG] if it should remain as is.
+ */
 /datum/ore/proc/on_mine(turf/source, mob/user, triggered_by_explosion = FALSE)
 	var/amount = rand(drop_min, drop_max)
 
@@ -22,7 +27,7 @@
 	else
 		stack_trace("[source.type] [COORD(source)] had non-ore stack [drop_type]")
 
-	return ORE_ALLOW_DIG
+	return MINERAL_ALLOW_DIG
 
 /datum/ore/iron
 	drop_type = /obj/item/stack/ore/iron
@@ -137,11 +142,11 @@
 		if(GIBTONITE_UNSTRUCK)
 			playsound(src,'sound/effects/hit_on_shattered_glass.ogg', 50, TRUE)
 			explosive_reaction(source, user, triggered_by_explosion)
-			return ORE_PREVENT_DIG
+			return MINERAL_PREVENT_DIG
 		if(GIBTONITE_ACTIVE)
 			detonate(source)
 
-			return ORE_ALLOW_DIG
+			return MINERAL_ALLOW_DIG
 		if(GIBTONITE_STABLE)
 			var/obj/item/gibtonite/gibtonite = new(source)
 			if(remaining_time <= 0)
@@ -151,9 +156,9 @@
 				gibtonite.quality = 2
 				gibtonite.icon_state = "Gibtonite ore 2"
 
-			return ORE_ALLOW_DIG
+			return MINERAL_ALLOW_DIG
 
-	return ORE_PREVENT_DIG
+	return MINERAL_PREVENT_DIG
 
 /datum/ore/gibtonite/proc/on_parent_attackby(turf/source, obj/item/attacker, mob/user)
 	SIGNAL_HANDLER // COMSIG_PARENT_ATTACKBY

code/game/turfs/simulated/minerals.dm

@@ -94,15 +94,15 @@
 
 /turf/simulated/mineral/proc/mine_ore(mob/user, triggered_by_explosion)
 	if(!ore)
-		return TRUE
+		return MINERAL_ALLOW_DIG
 
 	for(var/obj/effect/temp_visual/mining_overlay/M in src)
 		qdel(M)
 
 	return ore.on_mine(src, user, triggered_by_explosion)
 
 /turf/simulated/mineral/proc/gets_drilled(mob/user, triggered_by_explosion = FALSE)
-	if(mine_ore(user, triggered_by_explosion) == ORE_PREVENT_DIG)
+	if(mine_ore(user, triggered_by_explosion) == MINERAL_PREVENT_DIG)
 		return
 
 	ChangeTurf(turf_type, defer_change)