88c10d3d6e
Two optimizations that added up to a significant time savings in on_generated: - Replacing calls to area:index(x,y,z) to precalculating an offset and then using stride math inside the loops gives us a huge cost savings. - Prefilling lookup-by-ID tables to force them into sequential arrays instead of hashmaps speeds up lookups, for a more moderate savings.
65 lines
1.9 KiB
Lua
65 lines
1.9 KiB
Lua
-- LUALOCALS < ---------------------------------------------------------
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local math, minetest, nodecore, pairs
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= math, minetest, nodecore, pairs
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local math_floor
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= math.floor
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-- LUALOCALS > ---------------------------------------------------------
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local modname = minetest.get_current_modname()
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minetest.register_ore({
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name = "gravel",
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ore_type = "blob",
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ore = modname .. ":gravel",
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wherein = modname .. ":stone",
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clust_size = 5,
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clust_scarcity = 8 * 8 * 8,
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random_factor = 0,
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noise_params = {
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offset = 0,
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scale = 3,
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spread = {x = 10, y = 25, z = 10},
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seed = 34654,
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octaves = 3,
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persist = 0.5,
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flags = "eased",
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},
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noise_threshold = 1.2
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})
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local c_air = minetest.get_content_id("air")
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local c_stones = {}
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for _, n in pairs(minetest.registered_nodes[modname .. ":stone"].strata) do
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c_stones[minetest.get_content_id(n)] = true
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end
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local function regspring(label, node, rarity)
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local c_node = minetest.get_content_id(node)
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nodecore.register_mapgen_shared({
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label = label,
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func = function(minp, maxp, area, data, _, _, _, rng)
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local rawqty = rng() * (maxp.x - minp.x + 1)
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* (maxp.z - minp.z + 1) * (maxp.y - minp.y + 1) / rarity
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local qty = math_floor(rawqty)
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if rng() < (rawqty - qty) then qty = qty + 1 end
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for _ = 1, qty do
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local x = rng(minp.x + 1, maxp.x - 1)
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local y = rng(minp.y + 1, maxp.y - 1)
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local z = rng(minp.z + 1, maxp.z - 1)
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local idx = area:index(x, y, z)
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if c_stones[idx]
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and (data[idx - 1] == c_air
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or data[idx + 1] == c_air
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or data[idx - area.ystride] == c_air
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or data[idx + area.ystride] == c_air
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or data[idx - area.zstride] == c_air
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or data[idx + area.zstride] == c_air)
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then data[area:index(x, y, z)] = c_node end
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end
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end
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})
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end
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local baserarity = 32 * 32 * 32
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regspring("water spring", modname .. ":water_source", baserarity)
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regspring("lava spring", modname .. ":lava_source", baserarity * 8)
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