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71 lines
2.1 KiB
Lua
71 lines
2.1 KiB
Lua
function flowers.mgv6ongen(minp, maxp, seed)
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if maxp.y >= 2 and minp.y <= 0 then
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-- Generate flowers
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local perlin1 = minetest.get_perlin(436, 3, 0.6, 100)
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-- Assume X and Z lengths are equal
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local divlen = 16
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local divs = (maxp.x-minp.x)/divlen+1;
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for divx=0,divs-1 do
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for divz=0,divs-1 do
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local x0 = minp.x + math.floor((divx+0)*divlen)
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local z0 = minp.z + math.floor((divz+0)*divlen)
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local x1 = minp.x + math.floor((divx+1)*divlen)
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local z1 = minp.z + math.floor((divz+1)*divlen)
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-- Determine flowers amount from perlin noise
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local grass_amount = math.floor(perlin1:get2d({x=x0, y=z0}) ^ 3 * 9)
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-- Find random positions for flowers based on this random
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local pr = PseudoRandom(seed+456)
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for i=0,grass_amount do
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local x = pr:next(x0, x1)
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local z = pr:next(z0, z1)
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-- Find ground level (0...15)
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local ground_y = nil
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for y=30,0,-1 do
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if minetest.get_node({x=x,y=y,z=z}).name ~= "air" then
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ground_y = y
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break
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end
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end
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if ground_y then
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local p = {x=x,y=ground_y+1,z=z}
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local nn = minetest.get_node(p).name
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-- Check if the node can be replaced
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if minetest.registered_nodes[nn] and
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minetest.registered_nodes[nn].buildable_to then
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nn = minetest.get_node({x=x,y=ground_y,z=z}).name
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if nn == "default:dirt_with_grass" then
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local flower_choice = pr:next(1, 6)
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local flower
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if flower_choice == 1 then
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flower = "flowers:tulip"
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elseif flower_choice == 2 then
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flower = "flowers:rose"
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elseif flower_choice == 3 then
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flower = "flowers:dandelion_yellow"
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elseif flower_choice == 4 then
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flower = "flowers:dandelion_white"
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elseif flower_choice == 5 then
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flower = "flowers:geranium"
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elseif flower_choice == 6 then
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flower = "flowers:viola"
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end
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minetest.set_node(p, {name=flower})
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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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end
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-- Enable in mapgen v6 only
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minetest.register_on_mapgen_init(function(mg_params)
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if mg_params.mgname == "v6" then
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minetest.register_on_generated(flowers.mgv6ongen)
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end
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end)
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