mirror of
https://github.com/mt-mods/plantlife_modpack.git
synced 2024-11-09 20:00:48 +01:00
182 lines
6.5 KiB
Lua
182 lines
6.5 KiB
Lua
-- Plantlife mod by Vanessa Ezekowitz
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-- 2012-11-29
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--
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-- This mod combines all of the functionality from poison ivy,
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-- flowers, and jungle grass. If you have any of these, you no
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-- longer need them.
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--
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-- License:
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-- CC-BY-SA for most textures, except flowers
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-- WTFPL for the flowers textures
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-- WTFPL for all code and everything else
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-- Various settings - most of these probably won't need to be changed
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local plantlife_debug = false -- ...unless you want the modpack to spam the console ;-)
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local plantlife_seed_diff = 123
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local perlin_octaves = 3
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local perlin_persistence = 0.2
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local perlin_scale = 25
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local plantlife_limit = 0.1 -- compared against perlin noise. lower = more abundant
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local flowers_seed_diff = plantlife_seed_diff
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local junglegrass_seed_diff = plantlife_seed_diff + 10
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local poisonivy_seed_diff = plantlife_seed_diff + 10
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-- Local functions
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math.randomseed(os.time())
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local dbg = function(s)
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if plantlife_debug then
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print("[Plantlife] " .. s)
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end
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end
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local is_node_loaded = function(node_pos)
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n = minetest.env:get_node_or_nil(node_pos)
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if (n == nil) or (n.name == "ignore") then
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return false
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end
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return true
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end
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-- The spawning ABM
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spawn_on_surfaces = function(sdelay, splant, sradius, schance, ssurface, savoid, seed_diff, lightmin, lightmax, nneighbors, ocount, facedir, depthmax)
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if seed_diff == nil then seed_diff = 0 end
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if lightmin == nil then lightmin = 0 end
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if lightmax == nil then lightmax = LIGHT_MAX end
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if nneighbors == nil then nneighbors = ssurface end
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if ocount == nil then ocount = 0 end
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if depthmax == nil then depthmax = 1 end
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minetest.register_abm({
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nodenames = { ssurface },
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interval = sdelay,
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chance = schance,
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neighbors = nneighbors,
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action = function(pos, node, active_object_count, active_object_count_wider)
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local p_top = { x = pos.x, y = pos.y + 1, z = pos.z }
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local n_top = minetest.env:get_node(p_top)
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local perlin = minetest.env:get_perlin(seed_diff, perlin_octaves, perlin_persistence, perlin_scale )
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local noise = perlin:get2d({x=p_top.x, y=p_top.z})
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if ( noise > plantlife_limit ) and (n_top.name == "air") and is_node_loaded(p_top) then
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local n_light = minetest.env:get_node_light(p_top, nil)
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if (minetest.env:find_node_near(p_top, sradius + math.random(-1.5,2), savoid) == nil )
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and (n_light >= lightmin)
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and (n_light <= lightmax)
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and table.getn(minetest.env:find_nodes_in_area({x=pos.x-1, y=pos.y, z=pos.z-1}, {x=pos.x+1, y=pos.y, z=pos.z+1}, nneighbors)) > ocount
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then
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local walldir = plant_valid_wall(p_top)
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if splant == "poisonivy:seedling" and walldir ~= nil then
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dbg("Spawn: poisonivy:climbing at "..dump(p_top).." on "..ssurface)
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minetest.env:add_node(p_top, { name = "poisonivy:climbing", param2 = walldir })
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else
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local deepnode = minetest.env:get_node({ x = pos.x, y = pos.y-depthmax-1, z = pos.z }).name
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if (ssurface ~= "default:water_source")
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or (ssurface == "default:water_source"
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and deepnode ~= "default:water_source") then
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dbg("Spawn: "..splant.." at "..dump(p_top).." on "..ssurface)
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minetest.env:add_node(p_top, { name = splant, param2 = facedir })
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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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})
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end
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-- The growing ABM
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grow_plants = function(gdelay, gchance, gplant, gresult, dry_early_node, grow_nodes, facedir, need_wall, grow_vertically, height_limit, ground_nodes)
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if need_wall ~= true then need_wall = false end
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if grow_vertically ~= true then grow_vertically = false end
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if height_limit == nil then height_limit = 62000 end
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if ground_node == nil then ground_nodes = { "default:dirt_with_grass" } end
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minetest.register_abm({
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nodenames = { gplant },
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interval = gdelay,
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chance = gchance,
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action = function(pos, node, active_object_count, active_object_count_wider)
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local p_top = {x=pos.x, y=pos.y+1, z=pos.z}
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local p_bot = {x=pos.x, y=pos.y-1, z=pos.z}
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local n_top = minetest.env:get_node(p_top)
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local n_bot = minetest.env:get_node(p_bot)
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local groundnode = minetest.env:get_node({x=pos.x, y=pos.y-height_limit, z=pos.z})
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if string.find(dump(grow_nodes), n_bot.name) ~= nil and n_top.name == "air" then
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if grow_vertically then
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if find_first_node(pos, height_limit, ground_nodes) ~= nil then
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if need_wall then
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local walldir=plant_valid_wall(p_top)
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if walldir ~= nil then
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dbg("Grow: "..gplant.." upwards to ("..dump(p_top)..") on wall "..walldir)
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minetest.env:add_node(p_top, { name = gplant, param2 = walldir })
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end
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else
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dbg("Grow: "..gplant.." upwards to ("..dump(p_top)..")")
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minetest.env:add_node(p_top, { name = gplant })
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end
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end
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-- corner case for changing short junglegrass to dry shrub in desert
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elseif n_bot.name == dry_early_node and gplant == "junglegrass:short" then
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dbg("Die: "..gplant.." becomes default:dry_shrub at ("..dump(pos)..")")
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minetest.env:add_node(pos, { name = "default:dry_shrub" })
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elseif gresult == nil then
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dbg("Die: "..gplant.." at ("..dump(pos)..")")
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minetest.env:remove_node(pos)
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elseif gresult ~= nil then
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dbg("Grow: "..gplant.." becomes "..gresult.." at ("..dump(pos)..")")
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if facedir == nil then
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minetest.env:add_node(pos, { name = gresult })
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else
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minetest.env:add_node(pos, { name = gresult, param2 = facedir })
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end
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end
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end
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end
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})
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end
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-- function to decide if a node has a wall that's in verticals_list{}
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-- returns wall direction of valid node, or nil if invalid.
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plant_valid_wall = function(wallpos)
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local walldir = nil
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local verts = dump(verticals_list)
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local testpos = { x = wallpos.x-1, y = wallpos.y, z = wallpos.z }
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if string.find(verts, minetest.env:get_node(testpos).name) ~= nil then walldir=3 end
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local testpos = { x = wallpos.x+1, y = wallpos.y, z = wallpos.z }
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if string.find(verts, minetest.env:get_node(testpos).name) ~= nil then walldir=2 end
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local testpos = { x = wallpos.x , y = wallpos.y, z = wallpos.z-1 }
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if string.find(verts, minetest.env:get_node(testpos).name) ~= nil then walldir=5 end
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local testpos = { x = wallpos.x , y = wallpos.y, z = wallpos.z+1 }
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if string.find(verts, minetest.env:get_node(testpos).name) ~= nil then walldir=4 end
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return walldir
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end
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-- Function to search straight down from (pos) to find first node in match list.
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find_first_node = function(pos, height_limit, nodelist)
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for i = 1, height_limit do
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n = minetest.env:get_node({x=pos.x, y=pos.y-i, z=pos.z})
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if string.find(dump(nodelist),n.name) ~= nil then
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return n.name
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end
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end
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return nil
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end
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print("[Plantlife] Loaded!")
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