trees = {} dofile(minetest.get_modpath("trees").."/leavesgen.lua") dofile(minetest.get_modpath("trees").."/registration.lua") function trees.make_tree(pos, tree) local tree = realtest.registered_trees[tree] if not table.contains(tree.grounds, minetest.env:get_node({x=pos.x,y=pos.y-1,z=pos.z}).name) or minetest.env:find_node_near(pos, tree.radius, "group:tree") then return end local height = tree.height() for i = 0,height do if minetest.env:get_node({x=pos.x, y=pos.y+i, z=pos.z}).name ~= "air" then return end end for i = 0,height do minetest.env:add_node({x=pos.x, y=pos.y+i, z=pos.z}, {name=tree.name.."_trunk"}) end for i = 1,#tree.leaves do local p = {x=pos.x+tree.leaves[i][1], y=pos.y+height+tree.leaves[i][2], z=pos.z+tree.leaves[i][3]} if minetest.env:get_node(p).name == "air" or minetest.env:get_node(p).name == "ignore" then minetest.env:add_node(p, {name=tree.name.."_leaves"}) end end end local function generate(tree, 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) 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} local p3 = {x=x2, y=y2+1, z=z2} if minetest.env:get_node(p3).name == "air" then trees.make_tree(p3, tree) end end end end end end end end minetest.register_on_generated(function(minp, maxp, seed) local pr = PseudoRandom(seed) for key, value in pairs(realtest.registered_trees) do if pr:next(1, 10) == 1 then generate(key, minp, maxp, seed, 1/8/2, 1, -50, 100) end end end)