137 lines
4.6 KiB
Lua
137 lines
4.6 KiB
Lua
-- bonemealing grass nodes
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--
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-- When bonemealing "mcl_core:dirt_with_grass", it spawns grass and flowers
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-- over a 7x7 patch of adjacent grassy nodes.
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--
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-- Because of potential dependency complications it is not advisable to add
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-- callbacks to mcl_core that create dependencies on mods that depend on
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-- mcl_core, such as mcl_flowers.
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--
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-- To work around this restriction, the bonemealing callback is defined here
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-- and the _on_bone_meal callback in "mcl_core:dirt_with_grass" node
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-- definition is overwritten with it.
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local mg_name = minetest.get_mapgen_setting("mg_name")
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local flowers_table_simple = {
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"mcl_flowers:dandelion",
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"mcl_flowers:poppy",
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}
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local flowers_table_plains = {
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"mcl_flowers:dandelion",
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"mcl_flowers:dandelion",
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"mcl_flowers:poppy",
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"mcl_flowers:oxeye_daisy",
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"mcl_flowers:tulip_orange",
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"mcl_flowers:tulip_red",
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"mcl_flowers:tulip_white",
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"mcl_flowers:tulip_pink",
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"mcl_flowers:azure_bluet",
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}
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local flowers_table_swampland = {
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"mcl_flowers:blue_orchid",
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}
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local flowers_table_flower_forest = {
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"mcl_flowers:dandelion",
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"mcl_flowers:poppy",
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"mcl_flowers:oxeye_daisy",
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"mcl_flowers:tulip_orange",
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"mcl_flowers:tulip_red",
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"mcl_flowers:tulip_white",
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"mcl_flowers:tulip_pink",
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"mcl_flowers:azure_bluet",
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"mcl_flowers:allium",
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}
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local biome_flowers_tables = {
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["Plains"] = flowers_table_plains,
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["Plains_beach"] = flowers_table_plains,
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["Plains_ocean"] = flowers_table_plains,
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["Plains_deep_ocean"] = flowers_table_plains,
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["Plains_underground"] = flowers_table_plains,
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["SunflowerPlains"] = flowers_table_plains,
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["SunflowerPlains_ocean"] = flowers_table_plains,
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["SunflowerPlains_deep_ocean"] = flowers_table_plains,
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["SunflowerPlains_underground"] = flowers_table_plains,
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["Swampland"] = flowers_table_swampland,
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["Swampland_shore"] = flowers_table_swampland,
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["Swampland_ocean"] = flowers_table_swampland,
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["Swampland_deep_ocean"] = flowers_table_swampland,
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["Swampland_underground"] = flowers_table_swampland,
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["FlowerForest"] = flowers_table_flower_forest,
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["FlowerForest_beach"] = flowers_table_flower_forest,
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["FlowerForest_ocean"] = flowers_table_flower_forest,
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["FlowerForest_deep_ocean"] = flowers_table_flower_forest,
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["FlowerForest_underground"] = flowers_table_flower_forest,
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}
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-- Randomly generate flowers, tall grass or nothing
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-- pos: node to place into
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-- color: param2 value for tall grass
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--
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local function add_random_flower(pos, color)
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-- 90% tall grass, 10% flower
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local rnd = math.random(1,100)
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if rnd <= 60 then
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minetest.add_node(pos, {name="mcl_flowers:tallgrass", param2=color})
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elseif rnd <= 80 then
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-- double tallgrass
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local toppos = vector.offset(pos, 0, 1, 0)
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local topnode = minetest.get_node(toppos)
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if minetest.registered_nodes[topnode.name].buildable_to then
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minetest.set_node(pos, { name = "mcl_flowers:double_grass", param2 = color })
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minetest.set_node(toppos, { name = "mcl_flowers:double_grass_top", param2 = color })
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return true
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end
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else
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local flowers_table
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if mg_name == "v6" then
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flowers_table = flowers_table_plains
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else
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local biome = minetest.get_biome_name(minetest.get_biome_data(pos).biome)
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flowers_table = biome_flowers_tables[biome] or flowers_table_simple
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end
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minetest.add_node(pos, {name=flowers_table[math.random(1, #flowers_table)]})
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end
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end
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--- Generate tall grass and random flowers in a 7x7 area
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-- Bonemealing callback handler for "mcl_core:dirt_with_grass"
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--
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local function bonemeal_grass(pointed_thing, placer)
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local pos, below, r, color
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for i = -7, 7 do for j = -7, 7 do for y = -1, 1 do
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pos = vector.offset(pointed_thing.above, i, y, j)
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if minetest.get_node(pos).name == "air" then
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below = minetest.get_node(vector.offset(pos, 0, -1, 0))
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r = ((math.abs(i) + math.abs(j)) / 2)
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if (minetest.get_item_group(below.name, "grass_block_no_snow") == 1) and
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math.random(1, 100) <= 90 / r then
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color = below.param2
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add_random_flower(pos, color)
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if math.random(1,5) == 1 then
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mcl_bone_meal.add_bone_meal_particle(pos)
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end
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end
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end
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end end end
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return true
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end
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-- Override "mcl_core:dirt_with_grass" bonemealing handler.
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local nodename = "mcl_core:dirt_with_grass"
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local olddef = minetest.registered_nodes[nodename]
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if not olddef then
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minetest.log("warning", "'mcl_core:dirt_with_grass' not registered, cannot add override!")
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else
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local oldhandler = olddef._on_bone_meal
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local newhandler = function(itemstack, placer, pointed_thing)
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local res = bonemeal_grass(pointed_thing, placer)
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if oldhandler then
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res = oldhandler(itemstack, placer, pointed_thing) or res
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end
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return res
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end
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minetest.override_item(nodename, {_on_bone_meal = newhandler})
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end
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