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https://github.com/minetest/minetest_game.git
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0b025e6392
Disabled in mgv6 and singlenode mapgens, by setting, or if 'static_spawnpoint' is set. Cleanup format of minetest.conf.example.
125 lines
2.5 KiB
Lua
125 lines
2.5 KiB
Lua
-- Disable by mapgen, setting or if 'static_spawnpoint' is set
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--------------------------------------------------------------
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local mg_name = minetest.get_mapgen_setting("mg_name")
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if mg_name == "v6" or mg_name == "singlenode" or
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minetest.settings:get("static_spawnpoint") or
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minetest.settings:get_bool("engine_spawn") then
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return
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end
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-- Parameters
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-------------
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-- Resolution of search grid in nodes.
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local res = 64
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-- Number of points checked in the square search grid (edge * edge).
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local checks = 128 * 128
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-- Starting point for biome checks. This also sets the y co-ordinate for all
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-- points checked, so the suitable biomes must be active at this y.
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local pos = {x = 0, y = 8, z = 0}
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-- Table of suitable biomes
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local biome_ids = {
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minetest.get_biome_id("taiga"),
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minetest.get_biome_id("coniferous_forest"),
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minetest.get_biome_id("deciduous_forest"),
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minetest.get_biome_id("grassland"),
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minetest.get_biome_id("savanna"),
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}
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-- End of parameters
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--------------------
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-- Direction table
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local dirs = {
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{x = 0, y = 0, z = 1},
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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 = 1, y = 0, z = 0},
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}
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-- Initial variables
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local edge_len = 1
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local edge_dist = 0
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local dir_step = 0
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local dir_ind = 1
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local searched = false
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local success = false
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local spawn_pos = {}
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--Functions
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-----------
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-- Get next position on square search spiral
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local function next_pos()
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if edge_dist == edge_len then
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edge_dist = 0
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dir_ind = dir_ind + 1
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if dir_ind == 5 then
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dir_ind = 1
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end
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dir_step = dir_step + 1
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edge_len = math.floor(dir_step / 2) + 1
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end
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local dir = dirs[dir_ind]
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local move = vector.multiply(dir, res)
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edge_dist = edge_dist + 1
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return vector.add(pos, move)
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end
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-- Spawn position search
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local function search()
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for iter = 1, checks do
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local biome_data = minetest.get_biome_data(pos)
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-- Sometimes biome_data is nil
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local biome = biome_data and biome_data.biome
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for id_ind = 1, #biome_ids do
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local biome_id = biome_ids[id_ind]
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if biome == biome_id then
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local spawn_y = minetest.get_spawn_level(pos.x, pos.z)
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if spawn_y then
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spawn_pos = {x = pos.x, y = spawn_y, z = pos.z}
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return true
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end
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end
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end
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pos = next_pos()
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end
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return false
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end
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-- On new player spawn
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-- Search for new player spawn once per server session. If successful, store
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-- position and reposition new players, otherwise leave them at engine spawn
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-- position.
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minetest.register_on_newplayer(function(player)
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if not searched then
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success = search()
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searched = true
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end
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if success then
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player:setpos(spawn_pos)
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end
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end)
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