Add loot API and use it in tsm_railcorridors
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Wuzzy
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API for filling a chest with random treasures.
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mcl_loot = {}
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--[[
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Select a number of itemstacks out of a pool of treasure definitions randomly.
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Parameters:
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* loot_definitions: Probabilities and information about the loot to select. Syntax:
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{
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stacks_min = 1, -- Mamimum number of item stacks to get
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stacks_max = 3, -- Number of repetitions, maximum
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items = { -- Table of possible loot items. This function selects between stacks_min and stacks_max of these.
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{
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itemstring = "example:item1", -- Which item to select
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amount_min = 1, -- Minimum size of itemstack. Optional (default: 1)
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amount_max = 10, -- Maximum size of item stack. Must not exceed item definition's stack_max. Optional (default: 1)
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wear_min = 1, -- Minimum wear value. Must be at lest 1. Optional (default: no wear)
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wear_max = 1, -- Maxiumum wear value. Must be at lest 1. Optional (default: no wear)
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weight = 5, -- Likelihood of this item being selected
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},
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{ -- more tables like above, one table per item stack }
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}
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}
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* pr: PseudoRandom object
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How weight works: The probability of a single item stack being selected is weight/total_weight, with
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total_weight being the sum of all weight values in the items table.
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Returns: Table of itemstrings
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]]
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function mcl_loot.get_loot(loot_definitions, pr)
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local items = {}
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local total_weight = 0
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for i=1, #loot_definitions.items do
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total_weight = total_weight + loot_definitions.items[i].weight
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end
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local stacks = pr:next(loot_definitions.stacks_min, loot_definitions.stacks_max)
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for s=1, stacks do
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local r = pr:next(1, total_weight)
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local accumulated_weight = 0
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local item
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for i=1, #loot_definitions.items do
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accumulated_weight = accumulated_weight + loot_definitions.items[i].weight
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if accumulated_weight >= r then
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item = loot_definitions.items[i]
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break
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end
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end
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if item then
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local itemstring = item.itemstring
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if item.amount_min and item.amount_max then
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itemstring = itemstring .. " " .. pr:next(item.amount_min, item.amount_max)
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end
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if item.wear_min and item.wear_max then
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if not item.amount_min and not item.amount_max then
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itemstring = itemstring .. " 1"
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end
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itemstring = itemstring .. " " .. pr:next(item.wear_min, item.wear_max)
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end
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table.insert(items, itemstring)
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else
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minetest.log("error", "[mcl_loot] INTERNAL ERROR! Failed to select random loot item!")
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end
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end
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return items
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end
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--[[
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Repeat mcl_loot.get_loot multiple times for various loot_definitions.
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Useful for filling chests.
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* multi_loot_definitions: Table of loot_definitions (see mcl_loot.get_loot)
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* pr: PseudoRandom object
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Returns: Table of itemstrings ]]
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function mcl_loot.get_multi_loot(multi_loot_definitions, pr)
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local items = {}
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for m=1, #multi_loot_definitions do
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local group = mcl_loot.get_loot(multi_loot_definitions[m], pr)
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for g=1, #group do
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table.insert(items, group[g])
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end
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end
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return items
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end
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name = mcl_loot
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@ -1,5 +1,6 @@
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mcl_init
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mcl_util
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mcl_core
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mcl_loot
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mcl_tnt
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mcl_farming
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@ -30,69 +30,46 @@ end
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-- MineClone 2's treasure function. Gets all treasures for a single chest.
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-- Based on information from Minecraft Wiki.
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function tsm_railcorridors.get_treasures(pr)
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local items = {}
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-- First roll
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local r1 = pr:next(1,71)
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if r1 <= 30 then
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table.insert(items, "mobs:nametag")
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elseif r1 <= 50 then
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table.insert(items, "mcl_core:apple_gold")
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elseif r1 <= 60 then
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-- TODO: Enchanted Book
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table.insert(items, "mcl_books:book")
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elseif r1 <= 65 then
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-- Nothing!
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elseif r1 <= 70 then
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table.insert(items, "mcl_tools:pick_iron")
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else
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-- TODO: Enchanted Golden Apple
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table.insert(items, "mcl_core:apple_gold")
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end
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-- Second roll
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local r2stacks = pr:next(2,4)
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for i=1, r2stacks do
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local r2 = pr:next(1,83)
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if r2 <= 15 then
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table.insert(items, "mcl_farming:bread "..pr:next(1,3))
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elseif r2 <= 25 then
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table.insert(items, "mcl_core:coal_lump "..pr:next(3,8))
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elseif r2 <= 35 then
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table.insert(items, "mcl_farming:beetroot_seeds "..pr:next(2,4))
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elseif r2 <= 45 then
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table.insert(items, "mcl_farming:melon_seeds "..pr:next(2,4))
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elseif r2 <= 55 then
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table.insert(items, "mcl_farming:pumpkin_seeds "..pr:next(2,4))
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elseif r2 <= 65 then
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table.insert(items, "mcl_core:iron_ingot "..pr:next(1,5))
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elseif r2 <= 70 then
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table.insert(items, "mcl_dye:blue "..pr:next(4,9))
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elseif r2 <= 75 then
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table.insert(items, "mesecons:redstone "..pr:next(4,9))
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elseif r2 <= 80 then
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table.insert(items, "mcl_core:gold_ingot "..pr:next(1,3))
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else
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table.insert(items, "mcl_core:diamond "..pr:next(1,2))
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end
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end
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-- Third roll
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for i=1, 3 do
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local r3 = pr:next(1,50)
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if r3 <= 20 then
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table.insert(items, "mcl_minecarts:rail "..pr:next(4,8))
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elseif r3 <= 35 then
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table.insert(items, "mcl_torches:torch "..pr:next(1,16))
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elseif r3 <= 40 then
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-- TODO: Activator Rail
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table.insert(items, "mcl_minecarts:rail "..pr:next(1,4))
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elseif r3 <= 45 then
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-- TODO: Detector Rail
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table.insert(items, "mcl_minecarts:rail "..pr:next(1,4))
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else
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table.insert(items, "mcl_minecarts:golden_rail "..pr:next(1,4))
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end
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end
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local items = mcl_loot.get_multi_loot({
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{
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stacks_min = 1,
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stacks_max = 1,
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items = {
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{ itemstring = "mobs:nametag", weight = 30 },
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{ itemstring = "mcl_core:apple_gold", weight = 20 },
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{ itemstring = "mcl_books:book", weight = 10 }, -- TODO: Enchanted Book
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{ itemstring = "", weight = 5},
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{ itemstring = "mcl_core:pick_iron", weight = 5 },
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{ itemstring = "mcl:core:apple_gold", weight = 1 }, -- TODO: Enchanted Golden Apple
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}
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},
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{
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stacks_min = 2,
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stacks_max = 4,
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items = {
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{ itemstring = "mcl_farming:bread", weight = 15, amount_min = 1, amount_max = 3 },
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{ itemstring = "mcl_core:coal_lump", weight = 10, amount_min = 3, amount_max = 8 },
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{ itemstring = "mcl_farming:beetroot_seeds", weight = 10, amount_min = 2, amount_max = 4 },
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{ itemstring = "mcl_farming:melon_seeds", weight = 10, amount_min = 2, amount_max = 4 },
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{ itemstring = "mcl_farming:pumpkin_seeds", weight = 10, amount_min = 2, amount_max = 4 },
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{ itemstring = "mcl_core:iron_ingot", weight = 10, amount_min = 1, amount_max = 5 },
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{ itemstring = "mcl_dye:bye", weight = 5, amount_min = 4, amount_max = 9 },
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{ itemstring = "mesecons:redstone", weight = 5, amount_min = 4, amount_max = 9 },
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{ itemstring = "mcl_core:gold_ingot", weight = 5, amount_min = 1, amount_max = 3 },
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{ itemstring = "mcl_core:diamond", weight = 3, amount_min = 1, amount_max = 2 },
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}
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},
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{
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stacks_min = 3,
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stacks_max = 3,
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items = {
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{ itemstring = "mcl_minecarts:rail", weight = 20, amount_min = 4, amount_max = 8 },
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{ itemstring = "mcl_torches:torch", weight = 15, amount_min = 1, amount_max = 16 },
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{ itemstring = "mcl_minecarts:rail", weight = 5, amount_min = 1, amount_max = 4 }, -- TODO: Activator Rail
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{ itemstring = "mcl_minecarts:rail", weight = 5, amount_min = 1, amount_max = 4 }, -- TODO: Detector Rail
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{ itemstring = "mcl_minecarts:golden_rail", weight = 5, amount_min = 1, amount_max = 4 },
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}
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}}, pr)
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return items
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end
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