"dump",
"vector",
"VoxelManip", "VoxelArea",
- "PseudoRandom", "ItemStack",
+ "PseudoRandom", "PcgRandom",
+ "ItemStack",
"Settings",
"unpack",
- -- Silence "accessing undefined field copy of global table".
- table = { fields = { "copy" } }
+ -- Silence errors about custom table methods.
+ table = { fields = { "copy", "indexof" } }
}
-- Overwrites minetest.handle_node_drops
groups = {choppy = 2, oddly_breakable_by_hand = 2, flammable = 2},
sounds = default.node_sound_wood_defaults(), -- optional
+Dungeon Loot API
+----------------
+
+The mod that places chests with loot in dungeons provides an API to register additional loot.
+
+`dungeon_loot.register(def)`
+
+ * Registers one or more loot items
+ * `def` Can be a single [#Loot definition] or a list of them
+
+`dungeon_loot.registered_loot`
+
+ * Table of all registered loot, not to be modified manually
+
+### Loot definition
+
+ name = "item:name",
+ chance = 0.5,
+ -- ^ chance value from 0.0 to 1.0 that the item will appear in the chest when chosen
+ -- due to an extra step in the selection process, 0.5 does not(!) mean that
+ -- on average every second chest will have this item
+ count = {1, 4},
+ -- ^ table with minimum and maximum amounts of this item
+ -- optional, defaults to always single item
+ y = {-32768, -512},
+ -- ^ table with minimum and maximum heights this item can be found at
+ -- optional, defaults to no height restrictions
+ types = {"desert"},
+ -- ^ table with types of dungeons this item can be found in
+ -- supported types: "normal" (the cobble/mossycobble one), "sandstone", "desert"
+ -- optional, defaults to no type restrictions
+
Fence API
---------
--- /dev/null
+Minetest Game mod: dungeon_loot
+===============================
+Adds randomly generated chests with some "loot" to generated dungeons,
+an API to register additional loot is provided.
+Only works if dungeons are actually enabled in mapgen flags.
+
+License information can be found in license.txt
+
+Authors of source code
+----------------------
+Originally by sfan5 (MIT)
--- /dev/null
+dungeon_loot = {}
+
+dungeon_loot.CHESTS_MIN = 0 -- not necessarily in a single dungeon
+dungeon_loot.CHESTS_MAX = 2
+dungeon_loot.STACKS_PER_CHEST_MAX = 8
+
+dofile(minetest.get_modpath("dungeon_loot") .. "/loot.lua")
+dofile(minetest.get_modpath("dungeon_loot") .. "/mapgen.lua")
--- /dev/null
+License of source code
+----------------------
+
+The MIT License (MIT)
+Copyright (C) 2017 sfan5
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this
+software and associated documentation files (the "Software"), to deal in the Software
+without restriction, including without limitation the rights to use, copy, modify, merge,
+publish, distribute, sublicense, and/or sell copies of the Software, and to permit
+persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or
+substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
+FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
+
+For more details:
+https://opensource.org/licenses/MIT
--- /dev/null
+dungeon_loot.registered_loot = {
+ -- buckets
+ {name = "bucket:bucket_empty", chance = 0.55},
+ -- water in deserts or above ground, lava otherwise
+ {name = "bucket:bucket_water", chance = 0.45, types = {"sandstone", "desert"}},
+ {name = "bucket:bucket_water", chance = 0.45, y = {0, 32768}, types = {"normal"}},
+ {name = "bucket:bucket_lava", chance = 0.45, y = {-32768, -1}, types = {"normal"}},
+
+ -- various items
+ {name = "default:stick", chance = 0.6, count = {3, 6}},
+ {name = "default:flint", chance = 0.4, count = {1, 3}},
+ {name = "vessels:glass_fragments", chance = 0.35, count = {1, 4}},
+ {name = "carts:rail", chance = 0.35, count = {1, 6}},
+
+ -- farming / consumable
+ {name = "farming:string", chance = 0.5, count = {1, 8}},
+ {name = "farming:wheat", chance = 0.5, count = {2, 5}},
+ {name = "default:apple", chance = 0.4, count = {1, 4}},
+ {name = "farming:seed_cotton", chance = 0.4, count = {1, 4}, types = {"normal"}},
+ {name = "default:cactus", chance = 0.4, count = {1, 4}, types = {"sandstone", "desert"}},
+
+ -- minerals
+ {name = "default:coal_lump", chance = 0.9, count = {1, 12}},
+ {name = "default:gold_ingot", chance = 0.5},
+ {name = "default:steel_ingot", chance = 0.4, count = {1, 6}},
+ {name = "default:mese_crystal", chance = 0.1, count = {2, 3}},
+
+ -- tools
+ {name = "default:sword_wood", chance = 0.6},
+ {name = "default:pick_stone", chance = 0.3},
+ {name = "default:axe_diamond", chance = 0.05},
+
+ -- natural materials
+ {name = "default:sand", chance = 0.8, count = {4, 32}, y = {-64, 32768}, types = {"normal"}},
+ {name = "default:desert_sand", chance = 0.8, count = {4, 32}, y = {-64, 32768}, types = {"sandstone"}},
+ {name = "default:desert_cobble", chance = 0.8, count = {4, 32}, types = {"desert"}},
+ {name = "default:dirt", chance = 0.6, count = {2, 16}, y = {-64, 32768}},
+ {name = "default:obsidian", chance = 0.25, count = {1, 3}, y = {-32768, -512}},
+ {name = "default:mese", chance = 0.15, y = {-32768, -512}},
+}
+
+function dungeon_loot.register(t)
+ if t.name ~= nil then
+ t = {t} -- single entry
+ end
+ for _, loot in ipairs(t) do
+ table.insert(dungeon_loot.registered_loot, loot)
+ end
+end
+
+function dungeon_loot._internal_get_loot(pos_y, dungeontype)
+ -- filter by y pos and type
+ local ret = {}
+ for _, l in ipairs(dungeon_loot.registered_loot) do
+ if l.y == nil or (pos_y >= l.y[1] and pos_y <= l.y[2]) then
+ if l.types == nil or table.indexof(l.types, dungeontype) ~= -1 then
+ table.insert(ret, l)
+ end
+ end
+ end
+ return ret
+end
--- /dev/null
+minetest.set_gen_notify({dungeon = true, temple = true})
+
+local function noise3d_integer(noise, pos)
+ return math.abs(math.floor(noise:get3d(pos) * 0x7fffffff))
+end
+
+local function random_sample(rand, list, count)
+ local ret = {}
+ for n = 1, count do
+ local idx = rand:next(1, #list)
+ table.insert(ret, list[idx])
+ table.remove(list, idx)
+ end
+ return ret
+end
+
+local function find_walls(cpos)
+ local wall = minetest.registered_aliases["mapgen_cobble"]
+ local wall_alt = minetest.registered_aliases["mapgen_mossycobble"]
+ local wall_ss = minetest.registered_aliases["mapgen_sandstonebrick"]
+ local wall_ds = minetest.registered_aliases["mapgen_desert_stone"]
+ local is_wall = function(node)
+ return table.indexof({wall, wall_alt, wall_ss, wall_ds}, node.name) ~= -1
+ end
+
+ local dirs = {{x=1, z=0}, {x=-1, z=0}, {x=0, z=1}, {x=0, z=-1}}
+ local get_node = minetest.get_node
+
+ local ret = {}
+ local mindist = {x=0, z=0}
+ local min = function(a, b) return a ~= 0 and math.min(a, b) or b end
+ local wallnode
+ for _, dir in ipairs(dirs) do
+ for i = 1, 9 do -- 9 = max room size / 2
+ local pos = vector.add(cpos, {x=dir.x*i, y=0, z=dir.z*i})
+
+ -- continue in that direction until we find a wall-like node
+ local node = get_node(pos)
+ if is_wall(node) then
+ local front_below = vector.subtract(pos, {x=dir.x, y=1, z=dir.z})
+ local above = vector.add(pos, {x=0, y=1, z=0})
+
+ -- check that it:
+ --- is at least 2 nodes high (not a staircase)
+ --- has a floor
+ if is_wall(get_node(front_below)) and is_wall(get_node(above)) then
+ table.insert(ret, {pos = pos, facing = {x=-dir.x, y=0, z=-dir.z}})
+ if dir.z == 0 then
+ mindist.x = min(mindist.x, i-1)
+ else
+ mindist.z = min(mindist.z, i-1)
+ end
+ wallnode = node.name
+ end
+ -- abort even if it wasn't a wall cause something is in the way
+ break
+ end
+ end
+ end
+
+ local mapping = {
+ [wall_ss] = "sandstone",
+ [wall_ds] = "desert"
+ }
+ return {
+ walls = ret,
+ size = {x=mindist.x*2, z=mindist.z*2},
+ type = mapping[wallnode] or "normal"
+ }
+end
+
+local function populate_chest(pos, rand, dungeontype)
+ --minetest.chat_send_all("chest placed at " .. minetest.pos_to_string(pos) .. " [" .. dungeontype .. "]")
+ --minetest.add_node(vector.add(pos, {x=0, y=1, z=0}), {name="default:torch", param2=1})
+
+ local item_list = dungeon_loot._internal_get_loot(pos.y, dungeontype)
+ -- take random (partial) sample of all possible items
+ assert(#item_list >= dungeon_loot.STACKS_PER_CHEST_MAX)
+ item_list = random_sample(rand, item_list, dungeon_loot.STACKS_PER_CHEST_MAX)
+
+ -- apply chances / randomized amounts and collect resulting items
+ local items = {}
+ for _, loot in ipairs(item_list) do
+ if rand:next(0, 1000) / 1000 <= loot.chance then
+ local itemdef = minetest.registered_items[loot.name]
+ local amount = 1
+ if loot.count ~= nil then
+ amount = rand:next(loot.count[1], loot.count[2])
+ end
+
+ if itemdef.tool_capabilities then
+ for n = 1, amount do
+ local wear = rand:next(0.20 * 65535, 0.75 * 65535) -- 20% to 75% wear
+ table.insert(items, ItemStack({name = loot.name, wear = wear}))
+ end
+ elseif itemdef.stack_max == 1 then
+ -- not stackable, add separately
+ for n = 1, amount do
+ table.insert(items, loot.name)
+ end
+ else
+ table.insert(items, ItemStack({name = loot.name, count = amount}))
+ end
+ end
+ end
+
+ -- place items at random places in chest
+ local inv = minetest.get_meta(pos):get_inventory()
+ local listsz = inv:get_size("main")
+ assert(listsz >= #items)
+ for _, item in ipairs(items) do
+ local index = rand:next(1, listsz)
+ if inv:get_stack("main", index):is_empty() then
+ inv:set_stack("main", index, item)
+ else
+ inv:add_item("main", item) -- space occupied, just put it anywhere
+ end
+ end
+end
+
+
+minetest.register_on_generated(function(minp, maxp, blockseed)
+ local gennotify = minetest.get_mapgen_object("gennotify")
+ local poslist = gennotify["dungeon"] or {}
+ for _, entry in ipairs(gennotify["temple"] or {}) do
+ table.insert(poslist, entry)
+ end
+ if #poslist == 0 then return end
+
+ local noise = minetest.get_perlin(10115, 4, 0.5, 1)
+ local rand = PcgRandom(noise3d_integer(noise, poslist[1]))
+
+ local candidates = {}
+ -- process at most 16 rooms to keep runtime of this predictable
+ local num_process = math.min(#poslist, 16)
+ for i = 1, num_process do
+ local room = find_walls(poslist[i])
+ -- skip small rooms and everything that doesn't at least have 3 walls
+ if math.min(room.size.x, room.size.z) >= 4 and #room.walls >= 3 then
+ table.insert(candidates, room)
+ end
+ end
+
+ local num_chests = rand:next(dungeon_loot.CHESTS_MIN, dungeon_loot.CHESTS_MAX)
+ num_chests = math.min(#candidates, num_chests)
+ local rooms = random_sample(rand, candidates, num_chests)
+
+ for _, room in ipairs(rooms) do
+ -- choose place somewhere in front of any of the walls
+ local wall = room.walls[rand:next(1, #room.walls)]
+ local v, vi -- vector / axis that runs alongside the wall
+ if wall.facing.x ~= 0 then
+ v, vi = {x=0, y=0, z=1}, "z"
+ else
+ v, vi = {x=1, y=0, z=0}, "x"
+ end
+ local chestpos = vector.add(wall.pos, wall.facing)
+ local off = rand:next(-room.size[vi]/2 + 1, room.size[vi]/2 - 1)
+ chestpos = vector.add(chestpos, vector.multiply(v, off))
+
+ if minetest.get_node(chestpos).name == "air" then
+ -- make it face inwards to the room
+ local facedir = minetest.dir_to_facedir(vector.multiply(wall.facing, -1))
+ minetest.add_node(chestpos, {name = "default:chest", param2 = facedir})
+ populate_chest(chestpos, PcgRandom(noise3d_integer(noise, chestpos)), room.type)
+ end
+ end
+end)
projects / oweals / minetest_game.git / commitdiff