345 lines
12 KiB
Lua
345 lines
12 KiB
Lua
-- FIXME: Chests may appear at openings
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-- TODO: Add monster spawner
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local pr = PseudoRandom(os.time())
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-- Get loot for dungeon chests
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local get_loot = function()
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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 = 3,
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items = {
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{ itemstring = "mobs:nametag", weight = 20 },
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{ itemstring = "mcl_mobitems:saddle", weight = 20 },
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{ itemstring = "mcl_jukebox:record_1", weight = 15 },
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{ itemstring = "mcl_jukebox:record_4", weight = 15 },
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{ itemstring = "mobs_mc:iron_horse_armor", weight = 15 },
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{ itemstring = "mcl_core:apple_gold", weight = 15 },
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-- TODO: Enchanted Book
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{ itemstring = "mcl_books:book", weight = 10 },
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{ itemstring = "mobs_mc:gold_horse_armor", weight = 10 },
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{ itemstring = "mobs_mc:diamond_horse_armor", weight = 5 },
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-- TODO: Enchanted Golden Apple
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{ itemstring = "mcl_core:apple_gold", weight = 2 },
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}
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},
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{
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stacks_min = 1,
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stacks_max = 4,
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items = {
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{ itemstring = "mcl_farming:wheat_item", weight = 20, amount_min = 1, amount_max = 4 },
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{ itemstring = "mcl_farming:bread", weight = 20 },
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{ itemstring = "mcl_core:coal_lump", weight = 15, amount_min = 1, amount_max = 4 },
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{ itemstring = "mesecons:redstone", weight = 15, amount_min = 1, amount_max = 4 },
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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 = 4 },
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{ itemstring = "mcl_buckets:bucket_empty", weight = 10 },
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{ itemstring = "mcl_core:gold_ingot", weight = 5, amount_min = 1, amount_max = 4 },
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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_mobitems:bone", weight = 10, amount_min = 1, amount_max = 8 },
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{ itemstring = "mcl_mobitems:gunpowder", weight = 10, amount_min = 1, amount_max = 8 },
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{ itemstring = "mcl_mobitems:rotten_flesh", weight = 10, amount_min = 1, amount_max = 8 },
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{ itemstring = "mcl_mobitems:string", weight = 10, amount_min = 1, amount_max = 8 },
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},
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}}, pr)
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return items
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end
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-- Buffer for LuaVoxelManip
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local lvm_buffer = {}
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local lvm_buffer2 = {} -- for param2
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-- Below the bedrock, generate air/void
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minetest.register_on_generated(function(minp, maxp)
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if maxp.y < mcl_vars.mg_overworld_min or minp.y > mcl_vars.mg_overworld_max then
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return
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end
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local vm, emin, emax = minetest.get_mapgen_object("voxelmanip")
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local data = vm:get_data(lvm_buffer)
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local area = VoxelArea:new({MinEdge=emin, MaxEdge=emax})
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local lvm_used = false
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local c_air = minetest.get_content_id("air")
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local c_cobble = minetest.get_content_id("mcl_core:cobble")
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local c_mossycobble = minetest.get_content_id("mcl_core:mossycobble")
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local c_chest = minetest.get_content_id("mcl_chests:chest")
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-- Remember spawner chest positions to set metadata later
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local chest_posses = {}
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local spawner_posses = {}
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-- Calculate the number of dungeon spawn attempts
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local sizevector = vector.subtract(maxp, minp)
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sizevector = vector.add(sizevector, 1)
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local chunksize = sizevector.x * sizevector.y * sizevector.z
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-- In Minecraft, there 8 dungeon spawn attempts Minecraft chunk (16*256*16 = 65536 blocks).
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-- Minetest chunks don't have this size, so scale the number accordingly.
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local attempts = math.ceil(chunksize / 65536 * 8)
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for a=1, attempts do
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local x, y, z
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local b = 7 -- buffer
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x = math.random(minp.x+b, maxp.x-b)
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local ymin = math.min(mcl_vars.mg_overworld_max, math.max(minp.y, mcl_vars.mg_bedrock_overworld_max) + 7)
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local ymax = math.min(mcl_vars.mg_overworld_max, math.max(maxp.y, mcl_vars.mg_bedrock_overworld_max) - 4)
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y = math.random(ymin, ymax)
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z = math.random(minp.z+b, maxp.z-b)
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local dungeonsizes = {
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{ x=5, y=4, z=5},
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{ x=5, y=4, z=7},
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{ x=7, y=4, z=5},
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{ x=7, y=4, z=7},
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}
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local dim = dungeonsizes[math.random(1, #dungeonsizes)]
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-- Check floor and ceiling: Must be *completely* solid
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local ceilingfloor_ok = true
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for tx = x, x+dim.x do
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for tz = z, z+dim.z do
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local floor = minetest.get_name_from_content_id(data[area:index(tx, y, tz)])
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local ceiling = minetest.get_name_from_content_id(data[area:index(tx, y+dim.y+1, tz)])
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if (not minetest.registered_nodes[floor].walkable) or (not minetest.registered_nodes[ceiling].walkable) then
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ceilingfloor_ok = false
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break
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end
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end
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if not ceilingfloor_ok then break end
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end
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-- Check for air openings (2 stacked air at ground level) in wall positions
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local openings_counter = 0
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-- Store positions of openings; walls will not be generated here
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local openings = {}
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if ceilingfloor_ok then
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local walls = {
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{ x, x+dim.x+1, "x", "z", z },
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{ x, x+dim.x+1, "x", "z", z+dim.z+1 },
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{ z+1, z+dim.z, "z", "x", x },
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{ z+1, z+dim.z, "z", "x", x+dim.x+1 },
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}
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for w=1, #walls do
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local wall = walls[w]
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for iter = wall[1], wall[2] do
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local pos = {}
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pos[wall[3]] = iter
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pos[wall[4]] = wall[5]
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pos.y = y+1
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if openings[pos.x] == nil then openings[pos.x] = {} end
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local door1 = area:index(pos.x, pos.y, pos.z)
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pos.y = y+2
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local door2 = area:index(pos.x, pos.y, pos.z)
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local doorname1 = minetest.get_name_from_content_id(data[door1])
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local doorname2 = minetest.get_name_from_content_id(data[door2])
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if doorname1 == "air" and doorname2 == "air" then
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openings_counter = openings_counter + 1
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openings[pos.x][pos.z] = true
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end
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end
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end
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end
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-- Check conditions. If okay, start generating
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if ceilingfloor_ok and openings_counter >= 1 and openings_counter <= 5 then
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-- Okay! Spawning starts!
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-- First prepare random chest positions.
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-- Chests spawn at wall
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-- We assign each position at the wall a number and each chest gets one of these numbers randomly
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local totalChests = 2 -- this code strongly relies on this number being 2
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local totalChestSlots = (dim.x-1) * (dim.z-1)
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local chestSlots = {}
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-- There is a small chance that both chests have the same slot.
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-- In that case, we give a 2nd chance for the 2nd chest to get spawned.
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-- If it failed again, tough luck! We stick with only 1 chest spawned.
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local lastRandom
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local secondChance = true -- second chance is still available
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for i=1, totalChests do
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local r = math.random(1, totalChestSlots)
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if r == lastRandom and secondChance then
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-- Oops! Same slot selected. Try again.
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r = math.random(1, totalChestSlots)
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secondChance = false
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end
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lastRandom = r
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table.insert(chestSlots, r)
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end
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table.sort(chestSlots)
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local currentChest = 1
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-- Calculate the monster spawner position, to be re-used for later
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local spawner_pos = {x = x + math.ceil(dim.x/2), y = y+1, z = z + math.ceil(dim.z/2)}
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table.insert(spawner_posses, spawner_pos)
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-- Generate walls and floor
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local maxx, maxy, maxz = x+dim.x+1, y+dim.y, z+dim.z+1
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local chestSlotCounter = 1
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for tx = x, maxx do
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for tz = z, maxz do
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for ty = y, maxy do
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local p_pos = area:index(tx, ty, tz)
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-- Do not overwrite nodes with is_ground_content == false (e.g. bedrock)
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-- Exceptions cobblestone and moss stone so neighborings dungeons nicely connect to each other
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local name = minetest.get_name_from_content_id(data[p_pos])
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if name == "mcl_core:cobble" or name == "mcl_core:mossycobble" or minetest.registered_nodes[name].is_ground_content then
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-- Floor
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if ty == y then
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if math.random(1,4) == 1 then
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data[p_pos] = c_cobble
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else
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data[p_pos] = c_mossycobble
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end
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-- Generate walls
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--[[ Note: No cobblestone additional ceiling is generated. This is intentional.
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The solid blocks above the dungeon are considered as the “ceiling”.
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It is possible (but rare) for a dungeon to generate below sand or gravel. ]]
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elseif ty > y and (tx == x or tx == maxx or (tz == z or tz == maxz)) then
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-- Check if it's an opening first
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if (not openings[tx][tz]) or ty == maxy then
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data[p_pos] = c_cobble
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end
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-- If it was an opening, the lower 3 blocks are not touched at all
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-- Room interiour
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else
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local forChest = ty==y+1 and (tx==x+1 or tx==maxx-1 or tz==z+1 or tz==maxz-1)
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-- Place next chest at the wall (if it was its chosen wall slot)
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if forChest and (currentChest < totalChests + 1) and (chestSlots[currentChest] == chestSlotCounter) then
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local p2
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-- Select rotation so the chest faces away from wall
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if (tx==x+1) then p2 = 3
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elseif (tx==maxx-1) then p2 = 1
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elseif (tz==z+1) then p2 = 2
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else p2 = 0 end
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table.insert(chest_posses, {x=tx, y=ty, z=tz})
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currentChest = currentChest + 1
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else
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data[p_pos] = c_air
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end
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if forChest then
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chestSlotCounter = chestSlotCounter + 1
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end
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end
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end
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end
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end
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end
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end
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lvm_used = true
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end
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if lvm_used then
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local chest_param2 = {}
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-- Determine correct chest rotation (must pointi outwards)
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for c=1, #chest_posses do
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local cpos = chest_posses[c]
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-- Check surroundings of chest to determine correct rotation
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local surround_vectors = {
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{ x=-1, y=0, z=0 },
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{ x=1, y=0, z=0 },
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{ x=0, y=0, z=-1 },
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{ x=0, y=0, z=1 },
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}
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local surroundings = {}
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for s=1, #surround_vectors do
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-- Detect the 4 horizontal neighbors
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local spos = vector.add(cpos, surround_vectors[s])
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local wpos = vector.subtract(cpos, surround_vectors[s])
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local p_pos = area:index(spos.x, spos.y, spos.z)
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local p_pos2 = area:index(wpos.x, wpos.y, wpos.z)
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local nodename = minetest.get_name_from_content_id(data[p_pos])
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local nodename2 = minetest.get_name_from_content_id(data[p_pos2])
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local nodedef = minetest.registered_nodes[nodename]
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local nodedef2 = minetest.registered_nodes[nodename2]
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-- The chest needs an open space in front of it and a walkable node (except chest) behind it
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if nodedef and nodedef.walkable == false and nodedef2 and nodedef2.walkable == true and nodename2 ~= "mcl_chests:chest" then
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table.insert(surroundings, spos)
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end
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end
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-- Set param2 (=facedir) of this chest
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local facedir
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if #surroundings <= 0 then
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-- Fallback if chest ended up in the middle of a room for some reason
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facedir = math.random(0, 0)
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else
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-- 1 or multiple possible open directions: Choose random facedir
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local face_to = surroundings[math.random(1, #surroundings)]
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facedir = minetest.dir_to_facedir(vector.subtract(cpos, face_to))
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end
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chest_param2[c] = facedir
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end
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-- Finally generate the dungeons all at once (except the chests and the spawners)
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vm:set_data(data)
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vm:calc_lighting()
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vm:update_liquids()
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vm:write_to_map()
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-- Chests are placed seperately
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for c=1, #chest_posses do
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local cpos = chest_posses[c]
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minetest.set_node(cpos, {name="mcl_chests:chest", param2=chest_param2[c]})
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local meta = minetest.get_meta(cpos)
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local inv = meta:get_inventory()
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local items = get_loot()
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for i=1, math.min(#items, inv:get_size("main")) do
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inv:set_stack("main", i, ItemStack(items[i]))
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end
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end
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-- Monster spawners are placed seperately, too
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-- We don't want to destroy non-ground nodes
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for s=1, #spawner_posses do
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local sp = spawner_posses[s]
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local n = minetest.get_name_from_content_id(data[area:index(sp.x,sp.y,sp.z)])
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if minetest.registered_nodes[n].is_ground_content then
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-- ... and place it and select a random mob
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minetest.set_node(sp, {name = "mcl_mobspawners:spawner"})
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local mobs = {
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"mobs_mc:zombie",
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"mobs_mc:zombie",
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"mobs_mc:spider",
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"mobs_mc:skeleton",
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}
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local spawner_mob = mobs[math.random(1, #mobs)]
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mcl_mobspawners.setup_spawner(sp, spawner_mob)
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end
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end
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end
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end)
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