forked from Wuzzy/realtest_mt5
97 lines
2.8 KiB
Lua
97 lines
2.8 KiB
Lua
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for i = 1,4 do
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minetest.register_node("icicles:icicle_"..i, {
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description = "Icicle "..i,
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groups = {cracky=3, icicle=1, oddly_breakable_by_hand=4-i, drop_on_dig=1,attached_node=1},
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tiles = {"default_stone.png"},
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is_ground_content = true,
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sounds = default.node_sound_stone_defaults(),
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drop = {
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max_items = 1,
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items = {
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{
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items = {"default:cobble"},
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rarity = 5 - i,
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},
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},
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},
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drawtype = "nodebox",
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paramtype = "light",
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paramtype2 = "wallmounted",
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node_box = {
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type = "fixed",
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fixed = {-i/10, -0.5, -i/10, i/10, 0.5, i/10}
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},
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selection_box = {
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type = "fixed",
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fixed = {-i/10, -0.5, -i/10, i/10, 0.5, i/10}
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},
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})
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end
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icicles = {}
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function icicles.make_stalactite(pos, length)
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for i = length,1,-1 do
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if minetest.get_node({x=pos.x,y=pos.y-i+1,z=pos.z}).name == "air" then
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minetest.set_node({x=pos.x,y=pos.y-i+1,z=pos.z}, {name = "icicles:icicle_"..5-i})
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else return end
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end
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end
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function icicles.make_stalagmite(pos, length)
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for i = 1,length do
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if minetest.get_node({x=pos.x,y=pos.y+i-1,z=pos.z}).name == "air" then
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minetest.set_node({x=pos.x,y=pos.y+i-1,z=pos.z}, {name = "icicles:icicle_"..5-i, param2 = 1})
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else return end
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end
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end
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local function generate(minp, maxp, seed, chunks_per_volume, icicles_per_chunk, height_min, height_max)
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if maxp.y < height_min or minp.y > height_max then
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return
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end
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local y_min = math.max(minp.y, height_min)
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local y_max = math.min(maxp.y, height_max)
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local volume = (maxp.x-minp.x+1)*(y_max-y_min+1)*(maxp.z-minp.z+1)
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local pr = PseudoRandom(seed)
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local num_chunks = math.floor(chunks_per_volume * volume)
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local chunk_size = 3
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if icicles_per_chunk <= 4 then
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chunk_size = 2
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end
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local inverse_chance = math.floor(chunk_size*chunk_size*chunk_size / icicles_per_chunk)
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for i=1,num_chunks do
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local y0 = pr:next(y_min, y_max-chunk_size+1)
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if y0 >= height_min and y0 <= height_max then
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local x0 = pr:next(minp.x, maxp.x-chunk_size+1)
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local z0 = pr:next(minp.z, maxp.z-chunk_size+1)
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local p0 = {x=x0, y=y0, z=z0}
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for x1=0,chunk_size-1 do
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for y1=0,chunk_size-1 do
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for z1=0,chunk_size-1 do
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if pr:next(1,inverse_chance) == 1 then
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local x2 = x0+x1
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local y2 = y0+y1
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local z2 = z0+z1
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local p2 = {x=x2, y=y2, z=z2}
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local p3 = {x=x2, y=y2+1, z=z2}
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local p4 = {x=x2, y=y2-1, z=z2}
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if minetest.get_node(p2).name == "air" then
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if minetest.get_node(p3).name == "default:stone" then
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icicles.make_stalactite(p2, pr:next(2, 4))
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elseif minetest.get_node(p4).name == "default:stone" then
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icicles.make_stalagmite(p2, pr:next(2, 4))
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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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end
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minetest.register_on_generated(function(minp, maxp, seed)
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generate(minp, maxp, seed, 1/8, 1, -31000, -200)
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end)
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