season/init.lua

season = {}
season.current = "spring"

-- Spring Leaves
minetest.register_node(":default:leaves", {
	description = "Leaves",
	drawtype = "allfaces_optional",
	visual_scale = 1.1,
	tiles = {"default_leaves.png"},
	inventory_image = "default_leaves.png",
	paramtype = "light",
	waving = 1,
	groups = {snappy=3, leafdecay=3, leaves=1, season=1},
	drop = {
		max_items = 1,
		items = {
			{items = {"default:sapling"}, rarity = 20},
			{items = {"default:leaves"}}
		}
	},
	--sounds = default.node_sound_leaves_defaults(),
})

-- End of Summer Leaves
minetest.register_node("season:leaves_summer", {
	description = "Leaves",
	drawtype = "allfaces_optional",
	visual_scale = 1.1,
	tiles = {"season_leaves_summer.png"},
	inventory_image = "season_leaves_summer.png",
	paramtype = "light",
	waving = 1,
	groups = {snappy=3, leafdecay=3, leaves=1, season=1},
	drop = {
		max_items = 1,
		items = {
			{items = {"default:sapling"}, rarity = 20},
			{items = {"default:leaves"}}
		}
	},
	--sounds = default.node_sound_leaves_defaults(),
})

-- Autumn Leaves
minetest.register_node("season:leaves_autumn", {
	description = "Leaves",
	drawtype = "allfaces_optional",
	visual_scale = 1.1,
	tiles = {"season_leaves_autumn.png"},
	inventory_image = "season_leaves_autumn.png",
	paramtype = "light",
	waving = 1,
	groups = {snappy=3, leafdecay=3, leaves=1, season=1},
	drop = {
		max_items = 1,
		items = {
			{items = {"default:sapling"}, rarity = 20},
			{items = {"default:leaves"}}
		}
	},
	--sounds = default.node_sound_leaves_defaults(),
})

-- Winter Leaves
minetest.register_node("season:leaves_winter", {
	description = "Leaves",
	drawtype = "allfaces_optional",
	visual_scale = 1.1,
	tiles = {"season_leaves_winter.png"},
	inventory_image = "season_leaves_winter.png",
	paramtype = "light",
	waving = 1,
	groups = {snappy=3, leafdecay=3, leaves=1 ,season=1},
	drop = {
		max_items = 1,
		items = {
			{items = {"default:sapling"}, rarity = 20},
			{items = {"default:leaves"}}
		}
	},
	--sounds = default.node_sound_leaves_defaults(),
})

-- Change Season Command
minetest.register_chatcommand("season", {
	params = "<season>",
	description = "Changes season <spring | summer | autumn | winter>",
	privs = {server=true},
	func = function(name, param)
		if not param or param == "" then return end
		local ssn = string.match(param, "([^ ]+)")
		if not ssn then return end
		season.current = ssn
		print("Season changed to:", season.current)
	end,
})

-- Spring Grass
minetest.register_node(":default:dirt_with_grass", {
	description = "Dirt with Grass and Footsteps",
	tiles = {"default_grass.png", "default_dirt.png", "default_dirt.png^default_grass_side.png"},
	is_ground_content = true,
	groups = {crumbly=3,soil=1,season=1},
	drop = 'default:dirt',
	--sounds = default.node_sound_dirt_defaults({
--		footstep = {name="default_grass_footstep", gain=0.25},
--	}),
})

-- Summer Grass
minetest.register_node("season:dirt_summer", {
	description = "Dirt with Grass",
	tiles = {"season_summer_grass.png", "default_dirt.png", "default_dirt.png^season_summer_grass_side.png"},
	is_ground_content = true,
	groups = {crumbly=3,soil=1 ,season=1},
	drop = 'default:dirt',
	--sounds = default.node_sound_dirt_defaults({
--		footstep = {name="default_grass_footstep", gain=0.25},
--	}),
})

-- Autumn Grass
minetest.register_node("season:dirt_autumn", {
	description = "Dirt with Grass",
	tiles = {"season_autumn_grass.png", "default_dirt.png", "default_dirt.png^season_autumn_grass_side.png"},
	is_ground_content = true,
	groups = {crumbly=3,soil=1 ,season=1},
	drop = 'default:dirt',
--	sounds = default.node_sound_dirt_defaults({
		--footstep = {name="default_grass_footstep", gain=0.25},
	--}),
})

-- Winter Grass
minetest.register_node(":default:dirt_with_snow", {
	description = "Dirt with Snow",
	tiles = {"default_snow.png", "default_dirt.png", "default_dirt.png^default_snow_side.png"},
	is_ground_content = true,
	groups = {crumbly=3 ,season=1},
	drop = 'default:dirt',
	--sounds = default.node_sound_dirt_defaults({
--		footstep = {name="default_snow_footstep", gain=0.25},
--	}),
})

-- Abm that switches leaves depending on Season
minetest.register_abm({
	nodenames = {"group:season"},
	interval = 20,
	chance = 4,
	action = function(pos, node, active_object_count, active_object_count_wider)
	
		local data = nil
		data = string.split(node.name, ":", 2)
		local mod = data[1]..":"
		local nod = data[2]
		data = string.split(nod, "_", 2)
		local typ = data[1]
		
		--print ("TYPE:", mod, nod, typ)

		if typ == "leaves" then

			if season.current == "spring" then
				minetest.add_node(pos, {name="default:leaves"})
			elseif season.current == "summer" then
				minetest.add_node(pos, {name="season:leaves_summer"})
			elseif season.current == "autumn" then
				minetest.add_node(pos, {name="season:leaves_autumn"})
			elseif season.current == "winter" then
				minetest.add_node(pos, {name="season:leaves_winter"})
			end
		
		elseif typ == "dirt" then
		
			if season.current == "spring" then
				minetest.add_node(pos, {name="default:dirt_with_grass"})
			elseif season.current == "summer" then
				minetest.add_node(pos, {name="season:dirt_summer"})
			elseif season.current == "autumn" then
				minetest.add_node(pos, {name="season:dirt_autumn"})
			elseif season.current == "winter" then
				minetest.add_node(pos, {name="default:dirt_with_snow"})
			end
		
		end
		
	end,
})