diff options
Diffstat (limited to 'games')
| -rw-r--r-- | games/minimal/mods/default/mapgen.lua | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/games/minimal/mods/default/mapgen.lua b/games/minimal/mods/default/mapgen.lua new file mode 100644 index 000000000..af94505a0 --- /dev/null +++ b/games/minimal/mods/default/mapgen.lua @@ -0,0 +1,114 @@ +-- minetest/default/mapgen.lua + +-- +-- Aliases for map generator outputs +-- + +minetest.register_alias("mapgen_air", "air") +minetest.register_alias("mapgen_stone", "default:stone") +minetest.register_alias("mapgen_tree", "default:tree") +minetest.register_alias("mapgen_leaves", "default:leaves") +minetest.register_alias("mapgen_apple", "default:apple") +minetest.register_alias("mapgen_water_source", "default:water_source") +minetest.register_alias("mapgen_dirt", "default:dirt") +minetest.register_alias("mapgen_sand", "default:sand") +minetest.register_alias("mapgen_gravel", "default:gravel") +minetest.register_alias("mapgen_clay", "default:clay") +minetest.register_alias("mapgen_lava_source", "default:lava_source") +minetest.register_alias("mapgen_cobble", "default:cobble") +minetest.register_alias("mapgen_mossycobble", "default:mossycobble") +minetest.register_alias("mapgen_dirt_with_grass", "default:dirt_with_grass") +minetest.register_alias("mapgen_junglegrass", "default:junglegrass") +minetest.register_alias("mapgen_stone_with_coal", "default:stone_with_coal") +minetest.register_alias("mapgen_stone_with_iron", "default:stone_with_iron") +minetest.register_alias("mapgen_mese", "default:mese") + +-- +-- Ore generation +-- + +local function generate_ore(name, wherein, minp, maxp, seed, chunks_per_volume, ore_per_chunk, height_min, height_max) + if maxp.y < height_min or minp.y > height_max then + return + end + local y_min = math.max(minp.y, height_min) + local y_max = math.min(maxp.y, height_max) + local volume = (maxp.x-minp.x+1)*(y_max-y_min+1)*(maxp.z-minp.z+1) + local pr = PseudoRandom(seed) + local num_chunks = math.floor(chunks_per_volume * volume) + local chunk_size = 3 + if ore_per_chunk <= 4 then + chunk_size = 2 + end + local inverse_chance = math.floor(chunk_size*chunk_size*chunk_size / ore_per_chunk) + --print("generate_ore num_chunks: "..dump(num_chunks)) + for i=1,num_chunks do + local y0 = pr:next(y_min, y_max-chunk_size+1) + if y0 >= height_min and y0 <= height_max then + local x0 = pr:next(minp.x, maxp.x-chunk_size+1) + local z0 = pr:next(minp.z, maxp.z-chunk_size+1) + local p0 = {x=x0, y=y0, z=z0} + for x1=0,chunk_size-1 do + for y1=0,chunk_size-1 do + for z1=0,chunk_size-1 do + if pr:next(1,inverse_chance) == 1 then + local x2 = x0+x1 + local y2 = y0+y1 + local z2 = z0+z1 + local p2 = {x=x2, y=y2, z=z2} + if minetest.env:get_node(p2).name == wherein then + minetest.env:set_node(p2, {name=name}) + end + end + end + end + end + end + end + --print("generate_ore done") +end + +minetest.register_on_generated(function(minp, maxp, seed) + generate_ore("default:stone_with_coal", "default:stone", minp, maxp, seed, 1/8/8/8, 5, -31000, 64) + generate_ore("default:stone_with_iron", "default:stone", minp, maxp, seed+1, 1/16/16/16, 5, -5, 7) + generate_ore("default:stone_with_iron", "default:stone", minp, maxp, seed+2, 1/12/12/12, 5, -16, -5) + generate_ore("default:stone_with_iron", "default:stone", minp, maxp, seed+3, 1/9/9/9, 5, -31000, -17) + -- Generate clay + if maxp.y >= 2 and minp.y <= 0 then + -- Assume X and Z lengths are equal + local divlen = 4 + local divs = (maxp.x-minp.x)/divlen+1; + for divx=0+1,divs-1-1 do + for divz=0+1,divs-1-1 do + local cx = minp.x + math.floor((divx+0.5)*divlen) + local cz = minp.z + math.floor((divz+0.5)*divlen) + if minetest.env:get_node({x=cx,y=1,z=cz}).name == "default:water_source" and + minetest.env:get_node({x=cx,y=0,z=cz}).name == "default:sand" then + local is_shallow = true + local num_water_around = 0 + if minetest.env:get_node({x=cx-divlen*2,y=1,z=cz+0}).name == "default:water_source" then + num_water_around = num_water_around + 1 end + if minetest.env:get_node({x=cx+divlen*2,y=1,z=cz+0}).name == "default:water_source" then + num_water_around = num_water_around + 1 end + if minetest.env:get_node({x=cx+0,y=1,z=cz-divlen*2}).name == "default:water_source" then + num_water_around = num_water_around + 1 end + if minetest.env:get_node({x=cx+0,y=1,z=cz+divlen*2}).name == "default:water_source" then + num_water_around = num_water_around + 1 end + if num_water_around >= 2 then + is_shallow = false + end + if is_shallow then + for x1=-divlen,divlen do + for z1=-divlen,divlen do + if minetest.env:get_node({x=cx+x1,y=0,z=cz+z1}).name == "default:sand" then + minetest.env:set_node({x=cx+x1,y=0,z=cz+z1}, {name="default:clay"}) + end + end + end + end + end + end + end + end +end) + |