52 lines
2.0 KiB
Lua
52 lines
2.0 KiB
Lua
--nodename is the name of the node being placed.
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--pos is pos, no surprises there.
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--undernode is the node that needs to be below for the node to be placed.
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--replacing is what nodes are allowed to be replaced, usualy probably just air.
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function desert_life.spread(nodename, pos, spread, undernode, replacing, needed_air)
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local ran_num = math.random(1,8)
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local location = {}
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if ran_num == 1 then
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location = {x=pos.x+spread, y=pos.y, z=pos.z}
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end
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if ran_num == 2 then
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location = {x=pos.x+spread, y=pos.y, z=pos.z+spread}
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end
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if ran_num == 3 then
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location = {x=pos.x, y=pos.y, z=pos.z+spread}
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end
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if ran_num == 4 then
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location = {x=pos.x-spread, y=pos.y, z=pos.z+spread}
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end
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if ran_num == 5 then
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location = {x=pos.x-spread, y=pos.y, z=pos.z}
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end
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if ran_num == 6 then
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location = {x=pos.x-spread, y=pos.y, z=pos.z-spread}
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end
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if ran_num == 7 then
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location = {x=pos.x, y=pos.y, z=pos.z-spread}
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end
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if ran_num == 8 then
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location = {x=pos.x+spread, y=pos.y, z=pos.z-spread}
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end
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local under_location = ({x=location.x, y=location.y-1, z=location.z})
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local under_name = minetest.get_node_or_nil(under_location)
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local location_name = minetest.get_node_or_nil(location)
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if under_name == nil then
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return -- Should under_name somehow not be a node this will keep the script from crashing.
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end
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if under_name.name == undernode then
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if location_name.name == replacing then
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local diff = spread + 1
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local pos1 = {x=location.x+diff, y=location.y, z=location.z+diff}
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local pos0 = {x=location.x-diff, y=location.y, z=location.z-diff}
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local can_replace = minetest.find_nodes_in_area(pos0, pos1, replacing)
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local replace_num = #can_replace
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if replace_num >= needed_air then --increase to decrease number of plants.
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local face_ran = math.random(0,3)
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minetest.set_node(location, {name = nodename, param2 = face_ran})
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end
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end
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end
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end
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