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local time_scale = ...
-- The growing ABM
function biome_lib.check_surface(name, nodes)
if not nodes then return true end
if type(nodes) == "string" then return nodes == name end
if nodes.set and nodes[name] then
return true
else
for _, n in ipairs(nodes) do
if name == n then return true end
end
end
return false
end
function biome_lib:grow_plants(opts)
local options = opts
options.height_limit = options.height_limit or 5
options.ground_nodes = options.ground_nodes or { "default:dirt_with_grass" }
options.grow_nodes = options.grow_nodes or { "default:dirt_with_grass" }
options.seed_diff = options.seed_diff or 0
local n
if type(options.grow_plant) == "table" then
n = "multi: "..options.grow_plant[1]..", ..."
else
n = options.grow_plant
end
options.label = options.label or "biome_lib grow_plants(): "..n
if options.grow_delay*time_scale >= 1 then
options.interval = options.grow_delay*time_scale
else
options.interval = 1
end
minetest.register_abm({
nodenames = { options.grow_plant },
interval = options.interval,
chance = options.grow_chance,
label = options.label,
action = function(pos, node, active_object_count, active_object_count_wider)
local p_top = {x=pos.x, y=pos.y+1, z=pos.z}
local p_bot = {x=pos.x, y=pos.y-1, z=pos.z}
local n_top = minetest.get_node(p_top)
local n_bot = minetest.get_node(p_bot)
local root_node = minetest.get_node({x=pos.x, y=pos.y-options.height_limit, z=pos.z})
local walldir = nil
if options.need_wall and options.verticals_list then
walldir = biome_lib:find_adjacent_wall(p_top, options.verticals_list, options.choose_random_wall)
end
if (n_top.name == "air" or n_top.name == "default:snow")
and (not options.need_wall or (options.need_wall and walldir)) then
if options.grow_vertically and walldir then
if biome_lib:search_downward(pos, options.height_limit, options.ground_nodes) then
minetest.swap_node(p_top, { name = options.grow_plant, param2 = walldir})
end
elseif biome_lib.check_surface(n_bot.name, options.grow_nodes) then
if not options.grow_result and not options.grow_function then
minetest.swap_node(pos, biome_lib.air)
else
biome_lib:replace_object(pos, options.grow_result, options.grow_function, options.facedir, options.seed_diff)
end
end
end
end
})
end
-- spawn_tree() on generate is routed through here so that other mods can hook
-- into it.
function biome_lib:generate_tree(pos, nodes_or_function_or_model)
minetest.spawn_tree(pos, nodes_or_function_or_model)
end
-- and this one's for the call used in the growing code
function biome_lib:grow_tree(pos, nodes_or_function_or_model)
minetest.spawn_tree(pos, nodes_or_function_or_model)
end
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