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Flower spread ABM: Optimise

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Match maximum spread density to maximum mapgen density for flowers.
Place 3 flora nodes at once instead of 1.
Change ABM chance value to 300 to match previous spread rate.
ABM becomes 3 times less intensive.
This commit is contained in:
paramat 2018-01-15 05:33:27 +00:00 committed by paramat
parent d5907d5f1e
commit a587972010
1 changed files with 18 additions and 13 deletions
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31
mods/flowers/init.lua
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@ -139,24 +139,29 @@ function flowers.flower_spread(pos, node)
local pos0 = vector.subtract(pos, 4)
local pos1 = vector.add(pos, 4)
if #minetest.find_nodes_in_area(pos0, pos1, "group:flora") > 3 then
-- Maximum flower density created by mapgen is 13 per 9x9 area.
-- The limit of 7 below was tuned by in-game testing to result in a maximum
-- flower density by ABM spread of 13 per 9x9 area.
-- Warning: Setting this limit theoretically without in-game testing
-- results in a maximum flower density by ABM spread that is far too high.
if #minetest.find_nodes_in_area(pos0, pos1, "group:flora") > 7 then
return
end
local soils = minetest.find_nodes_in_area_under_air(
pos0, pos1, "group:soil")
if #soils > 0 then
local seedling = soils[math.random(#soils)]
local seedling_above =
{x = seedling.x, y = seedling.y + 1, z = seedling.z}
light = minetest.get_node_light(seedling_above)
if not light or light < 13 or
-- Desert sand is in the soil group
minetest.get_node(seedling).name == "default:desert_sand" then
return
local num_soils = #soils
if num_soils >= 1 then
for si = 1, math.min(3, num_soils) do
local soil = soils[math.random(num_soils)]
local soil_above = {x = soil.x, y = soil.y + 1, z = soil.z}
light = minetest.get_node_light(soil_above)
if light and light >= 13 and
-- Desert sand is in the soil group
minetest.get_node(soil).name ~= "default:desert_sand" then
minetest.set_node(soil_above, {name = node.name})
end
end
minetest.set_node(seedling_above, {name = node.name})
end
end
@ -164,7 +169,7 @@ minetest.register_abm({
label = "Flower spread",
nodenames = {"group:flora"},
interval = 13,
chance = 96,
chance = 300,
action = function(...)
flowers.flower_spread(...)
end,