Various fixes to the enchanting and loot system

- enchanted loot generated by mapgen now uses PseudoRandom for randomness
- prevent fishing loot from generating loot 32767 times (!!!) when only 1 is needed
- bows and fishing rods obtained from the treasure section of fishing loot are now enchanted
- there is now a function to uniform enchant items other than books

mods/CORE/mcl_loot/init.lua

@@ -58,26 +58,27 @@ function mcl_loot.get_loot(loot_definitions, pr)
 		end
 		if item then
 			local itemstring = item.itemstring
-			local itemstack = item.itemstack
+
 			if itemstring then
+				local stack = ItemStack(itemstring)
+
 				if item.amount_min and item.amount_max then
-					itemstring = itemstring .. " " .. pr:next(item.amount_min, item.amount_max)
+					stack:set_count(pr:next(item.amount_min, item.amount_max))
 				end
+
 				if item.wear_min and item.wear_max then
 					-- Sadly, PseudoRandom only allows very narrow ranges, so we set wear in steps of 10
 					local wear_min = math.floor(item.wear_min / 10)
 					local wear_max = math.floor(item.wear_max / 10)
-					local wear = pr:next(wear_min, wear_max) * 10
 
-					if not item.amount_min and not item.amount_max then
+					stack:set_wear(pr:next(wear_min, wear_max) * 10)
-						itemstring = itemstring .. " 1"
 				end
 
-					itemstring = itemstring .. " " .. tostring(wear)
+				if item.func then
+					item.func(stack, pr)
 				end
-				table.insert(items, itemstring)
+
-			elseif itemstack then
+				table.insert(items, stack)
-				table.insert(items, itemstack)
 			else
 				minetest.log("error", "[mcl_loot] INTERNAL ERROR! Failed to select random loot item!")
 			end

mods/ENTITIES/mobs_mc/villager.lua

@@ -409,7 +409,7 @@ local init_trades = function(self, inv)
 			local offered_stack = ItemStack({name = offered_item, count = offered_count})
 			if mcl_enchanting.is_enchanted(offered_item) then
 				if mcl_enchanting.is_book(offered_item) then
-					offered_stack = mcl_enchanting.get_uniform_randomly_enchanted_book({"soul_speed"})
+					mcl_enchanting.enchant_uniform_randomly(offered_stack, {"soul_speed"})
 				else
 					mcl_enchanting.enchant_randomly(offered_stack, math.random(5, 19), false, false, true)
 					mcl_enchanting.unload_enchantments(offered_stack)

mods/ITEMS/mcl_enchanting/engine.lua

@@ -295,6 +295,16 @@ function mcl_enchanting.initialize()
 	end
 end
 
+function mcl_enchanting.random(pr, ...)
+	local r = pr and pr:next(...) or math.random(...)
+
+	if pr and not ({...})[1] then
+		r = r / 32767
+	end
+
+	return r
+end
+
 function mcl_enchanting.get_random_enchantment(itemstack, treasure, weighted, exclude, pr)
 	local possible = {}
 
@@ -310,23 +320,30 @@ function mcl_enchanting.get_random_enchantment(itemstack, treasure, weighted, ex
 		end
 	end
 
-	return #possible > 0 and possible[pr and pr:next(1, #possible) or math.random(#possible)]
+	return #possible > 0 and possible[mcl_enchanting.random(pr, 1, #possible)]
 end
 
-function mcl_enchanting.generate_random_enchantments(itemstack, enchantment_level, treasure, no_reduced_bonus_chance, ignore_already_enchanted)
+function mcl_enchanting.generate_random_enchantments(itemstack, enchantment_level, treasure, no_reduced_bonus_chance, ignore_already_enchanted, pr)
 	local itemname = itemstack:get_name()
+
 	if not mcl_enchanting.can_enchant_freshly(itemname) and not ignore_already_enchanted then
 		return
 	end
+
 	itemstack = ItemStack(itemstack)
+
 	local enchantability = minetest.get_item_group(itemname, "enchantability")
-	enchantability = 1 + math.random(0, math.floor(enchantability / 4)) + math.random(0, math.floor(enchantability / 4))
+	enchantability = 1 + mcl_enchanting.random(pr, 0, math.floor(enchantability / 4)) + mcl_enchanting.random(pr, 0, math.floor(enchantability / 4))
+
 	enchantment_level = enchantment_level + enchantability
-	enchantment_level = enchantment_level + enchantment_level * (math.random() + math.random() - 1) * 0.15
+	enchantment_level = enchantment_level + enchantment_level * (mcl_enchanting.random(pr) + mcl_enchanting.random(pr) - 1) * 0.15
 	enchantment_level = math.max(math.floor(enchantment_level + 0.5), 1)
+
 	local enchantments = {}
 	local description
+
 	enchantment_level = enchantment_level * 2
+
 	repeat
 		enchantment_level = math.floor(enchantment_level / 2)
 
@@ -334,7 +351,7 @@ function mcl_enchanting.generate_random_enchantments(itemstack, enchantment_leve
 			break
 		end
 
-		local selected_enchantment = mcl_enchanting.get_random_enchantment(itemstack, treasure, true)
+		local selected_enchantment = mcl_enchanting.get_random_enchantment(itemstack, treasure, true, nil, pr)
 
 		if not selected_enchantment then
 			break
@@ -365,43 +382,41 @@ function mcl_enchanting.generate_random_enchantments(itemstack, enchantment_leve
 			enchantments[selected_enchantment] = enchantment_power
 			mcl_enchanting.enchant(itemstack, selected_enchantment, enchantment_power)
 		end
-	until not no_reduced_bonus_chance and math.random() >= (enchantment_level + 1) / 50
+
+	until not no_reduced_bonus_chance and mcl_enchanting.random(pr) >= (enchantment_level + 1) / 50
+
 	return enchantments, description
 end
 
-function mcl_enchanting.generate_random_enchantments_reliable(itemstack, enchantment_level, treasure, no_reduced_bonus_chance, ignore_already_enchanted)
+function mcl_enchanting.generate_random_enchantments_reliable(itemstack, enchantment_level, treasure, no_reduced_bonus_chance, ignore_already_enchanted, pr)
 	local enchantments
+
 	repeat
-		enchantments = mcl_enchanting.generate_random_enchantments(itemstack, enchantment_level, treasure, no_reduced_bonus_chance, ignore_already_enchanted)
+		enchantments = mcl_enchanting.generate_random_enchantments(itemstack, enchantment_level, treasure, no_reduced_bonus_chance, ignore_already_enchanted, pr)
 	until enchantments
+
 	return enchantments
 end
 
-function mcl_enchanting.enchant_randomly(itemstack, enchantment_level, treasure, no_reduced_bonus_chance, ignore_already_enchanted)
+function mcl_enchanting.enchant_randomly(itemstack, enchantment_level, treasure, no_reduced_bonus_chance, ignore_already_enchanted, pr)
+	local enchantments = mcl_enchanting.generate_random_enchantments_reliable(itemstack, enchantment_level, treasure, no_reduced_bonus_chance, ignore_already_enchanted, pr)
+
 	mcl_enchanting.set_enchanted_itemstring(itemstack)
-	mcl_enchanting.set_enchantments(itemstack, mcl_enchanting.generate_random_enchantments_reliable(itemstack, enchantment_level, treasure, no_reduced_bonus_chance, ignore_already_enchanted))
+	mcl_enchanting.set_enchantments(itemstack, enchantments)
+
 	return itemstack
 end
 
-function mcl_enchanting.get_randomly_enchanted_book(enchantment_level, treasure, no_reduced_bonus_chance)
-	return mcl_enchanting.enchant_randomly(ItemStack("mcl_books:book"), enchantment_level, treasure, no_reduced_bonus_chance, true)
-end
-
 function mcl_enchanting.enchant_uniform_randomly(stack, exclude, pr)
-	local enchantment = mcl_enchanting.get_random_enchantment(stack, true, weighted, exclude, pr)
+	local enchantment = mcl_enchanting.get_random_enchantment(stack, true, false, exclude, pr)
 
 	if enchantment then
-		local max_level = mcl_enchanting.enchantments[enchantment].max_level
+		mcl_enchanting.enchant(stack, enchantment, mcl_enchanting.random(pr, 1, mcl_enchanting.enchantments[enchantment].max_level))
-		mcl_enchanting.enchant(stack, enchantment, pr and pr:next(1, max_level) or math.random(max_level))
 	end
 
 	return stack
 end
 
-function mcl_enchanting.get_uniform_randomly_enchanted_book(exclude, pr)
-	return mcl_enchanting.enchant_uniform_randomly(ItemStack("mcl_books:book"), exclude, pr)
-end
-
 function mcl_enchanting.get_random_glyph_row()
 	local glyphs = ""
 	local x = 1.3

mods/ITEMS/mcl_fishing/init.lua

@@ -71,7 +71,9 @@ local fish = function(itemstack, player, pointed_thing)
 										{ itemstring = "mcl_fishing:salmon_raw", weight = 25 },
 										{ itemstring = "mcl_fishing:clownfish_raw", weight = 2 },
 										{ itemstring = "mcl_fishing:pufferfish_raw", weight = 13 },
-									}
+									},
+									stacks_min = 1,
+									stacks_max = 1,
 								}, pr)
 							elseif r <= junk_value then
 								-- Junk
@@ -88,21 +90,29 @@ local fish = function(itemstack, player, pointed_thing)
 										{ itemstring = "mcl_mobitems:bone", weight = 10 },
 										{ itemstring = "mcl_dye:black", weight = 1, amount_min = 10, amount_max = 10 },
 										{ itemstring = "mcl_mobitems:string", weight = 10 }, -- TODO: Tripwire Hook
-									}
+									},
+									stacks_min = 1,
+									stacks_max = 1,
 								}, pr)
 							else
 								-- Treasure
 								items = mcl_loot.get_loot({
 									items = {
-										-- TODO: Enchanted Bow
+										{ itemstring = "mcl_bows:bow", wear_min = 49144, wear_max = 65535, func = function(stack, pr)
-										{ itemstring = "mcl_bows:bow", wear_min = 49144, wear_max = 65535 }, -- 75%-100% damage
+											mcl_enchanting.enchant_randomly(stack, 30, true, false, false, pr)
-										{ itemstack = mcl_enchanting.get_randomly_enchanted_book(30, true, true)},
+										end }, -- 75%-100% damage
-										-- TODO: Enchanted Fishing Rod
+										{ itemstring = "mcl_books:book", func = function(stack, pr)
-										{ itemstring = "mcl_fishing:fishing_rod", wear_min = 49144, wear_max = 65535 }, -- 75%-100% damage
+											mcl_enchanting.enchant_randomly(stack, 30, true, true, false, pr)
+										end },
+										{ itemstring = "mcl_fishing:fishing_rod", wear_min = 49144, wear_max = 65535, func = function(stack, pr)
+											mcl_enchanting.enchant_randomly(stack, 30, true, false, false, pr)
+										end }, -- 75%-100% damage
 										{ itemstring = "mcl_mobs:nametag", },
 										{ itemstring = "mcl_mobitems:saddle", },
 										{ itemstring = "mcl_flowers:waterlily", },
-									}
+									},
+									stacks_min = 1,
+									stacks_max = 1,
 								}, pr)
 							end
 							local item

mods/MAPGEN/mcl_dungeons/init.lua

@@ -323,6 +323,9 @@ local function ecb_spawn_dungeon(blockpos, action, calls_remaining, param)
 					{ itemstring = "mcl_jukebox:record_4", weight = 15 },
 					{ itemstring = "mobs_mc:iron_horse_armor", weight = 15 },
 					{ itemstring = "mcl_core:apple_gold", weight = 15 },
+					{ itemstring = "mcl_books:book", weight = 10, func = function(stack, pr)
+						mcl_enchanting.enchant_uniform_randomly({"soul_speed"}, pr)
+					end },
 					{ itemstack = mcl_enchanting.get_uniform_randomly_enchanted_book({"soul_speed"}, pr), weight = 10 },
 					{ itemstring = "mobs_mc:gold_horse_armor", weight = 10 },
 					{ itemstring = "mobs_mc:diamond_horse_armor", weight = 5 },

mods/MAPGEN/mcl_structures/init.lua

@@ -454,7 +454,9 @@ local function temple_placement_callback(p1, p2, size, rotation, pr)
 				{ itemstring = "mcl_mobitems:bone", weight = 25, amount_min = 4, amount_max=6 },
 				{ itemstring = "mcl_mobitems:rotten_flesh", weight = 25, amount_min = 3, amount_max=7 },
 				{ itemstring = "mcl_mobitems:spider_eye", weight = 25, amount_min = 1, amount_max=3 },
-				{ itemstack = mcl_enchanting.get_uniform_randomly_enchanted_book({"soul_speed"}, pr), weight = 20, },
+				{ itemstring = "mcl_books:book", weight = 20, func = function(stack, pr)
+					mcl_enchanting.enchant_uniform_randomly({"soul_speed"}, pr)
+				end },
 				{ itemstring = "mcl_mobitems:saddle", weight = 20, },
 				{ itemstring = "mcl_core:apple_gold", weight = 20, },
 				{ itemstring = "mcl_core:gold_ingot", weight = 15, amount_min = 2, amount_max = 7 },

mods/MAPGEN/tsm_railcorridors/gameconfig.lua

@@ -66,7 +66,9 @@ function tsm_railcorridors.get_treasures(pr)
 		items = {
 			{ itemstring = "mcl_mobs:nametag", weight = 30 },
 			{ itemstring = "mcl_core:apple_gold", weight = 20 },
-			{ itemstack = mcl_enchanting.get_uniform_randomly_enchanted_book({"soul_speed"}, pr), weight = 10 },
+			{ itemstring = "mcl_books:book", weight = 10, func = function(stack, pr)
+				mcl_enchanting.enchant_uniform_randomly({"soul_speed"}, pr)
+			end },
 			{ itemstring = "", weight = 5},
 			{ itemstring = "mcl_core:pick_iron", weight = 5 },
 			{ itemstring = "mcl_core:apple_gold_enchanted", weight = 1 },