local S = df_underworld_items.S

local lava_source = df_underworld_items.nodes.lava_source

minetest.register_node("df_underworld_items:pit_plasma", {
	description = S("Glowing Pit Plasma"),
	_doc_items_longdesc = df_underworld_items.doc.pit_plasma_desc,
	_doc_items_usagehelp = df_underworld_items.doc.pit_plasma_usage,
	tiles = {
		{
			name = "dfcaverns_pit_plasma.png",
			backface_culling = true,
			animation = {
				type = "vertical_frames",
				aspect_w = 32,
				aspect_h = 32,
				length = 0.5,
			},
		},
	},
	
	groups={pit_plasma=1, pit_plasma_resistant=1},
	walkable = false,
	pointable = false,
	diggable = false,
	sunlight_propagates = false,
	buildable_to = true,
	drop = "",
	drowning = 1,
	liquid_viscosity = 7,
	damage_per_second = 4 * 2,
	post_effect_color = {a = 200, r = 245, g = 211, b = 251},
	drawtype="liquid",
	liquidtype="source",
	liquid_alternative_flowing = "df_underworld_items:pit_plasma_flowing",
	liquid_alternative_source = "df_underworld_items:pit_plasma",
	liquid_renewable = false,
	is_ground_content = false,
	light_source = minetest.LIGHT_MAX,
	paramtype = "light",
})

minetest.register_node("df_underworld_items:pit_plasma_flowing", {
	description = S("Glowing Pit Plasma"),
	_doc_items_longdesc = df_underworld_items.doc.pit_plasma_desc,
	_doc_items_usagehelp = df_underworld_items.doc.pit_plasma_usage,
	tiles = {"dfcaverns_pit_plasma_static.png"},
	special_tiles = {
		{
			name = "dfcaverns_pit_plasma.png",
			backface_culling = true,
			animation = {
				type = "vertical_frames",
				aspect_w = 32,
				aspect_h = 32,
				length = 0.5,
			},
		},
		{
			name = "dfcaverns_pit_plasma.png",
			backface_culling = true,
			animation = {
				type = "vertical_frames",
				aspect_w = 32,
				aspect_h = 32,
				length = 0.5,
			},
		},
	},
	groups={pit_plasma=1, pit_plasma_resistant=1, not_in_creative_inventory=1},
	walkable = false,
	pointable = false,
	diggable = false,
	sunlight_propagates = false,
	buildable_to = true,
	drop = "",
	drowning = 1,
	liquid_viscosity = 7,
	damage_per_second = 4 * 2,
	post_effect_color = {a = 200, r = 245, g = 211, b = 251},
	liquidtype = "flowing",
	drawtype = "flowingliquid",
	paramtype2 = "flowingliquid",
	liquid_alternative_flowing = "df_underworld_items:pit_plasma_flowing",
	liquid_alternative_source = "df_underworld_items:pit_plasma",
	liquid_renewable = false,
	is_ground_content = false,
	light_source = minetest.LIGHT_MAX,
	paramtype = "light",
})

if minetest.get_modpath("radiant_damage") and radiant_damage.override_radiant_damage then
	if radiant_damage.config.enable_mese_damage then
		radiant_damage.override_radiant_damage("mese", {emitted_by={["group:pit_plasma"] = radiant_damage.config.mese_damage*2}})
	end
	if radiant_damage.config.enable_heat_damage then
		radiant_damage.override_radiant_damage("heat", {emitted_by={["group:pit_plasma"] = radiant_damage.config.lava_damage}})
	end
end

local sparkle = function(sparkle_pos)
	minetest.add_particlespawner({
		amount = 10,
		time = 2,
		minpos = {x=sparkle_pos.x-5, y=sparkle_pos.y-0.5, z=sparkle_pos.z-5},
		maxpos = {x=sparkle_pos.x+5, y=sparkle_pos.y+0.5, z=sparkle_pos.z+5},
		minvel = {x=-0.1, y=2, z=-0.1},
		maxvel = {x=0.1, y=2, z=0.1},
		minacc = {x=0, y=2, z=0},
		maxacc = {x=0, y=2, z=0},
		minexptime = 5,
		maxexptime = 10,
		minsize = 1,
		maxsize = 1,
		collisiondetection = true,
		collision_removal = true,
		vertical = false,
		glow = minetest.LIGHT_MAX,
		texture = "dfcaverns_glowpit_particle.png",
	})
	minetest.sound_play({name="dfcaverns_arcing"}, {
		pos = sparkle_pos,
		gain = 1,
		max_hear_distance = 32,
	})
end

if df_underworld_items.config.destructive_pit_plasma then
	minetest.register_abm({
		label = "glowing pit matter degradation",
		nodenames = {"group:pit_plasma"},
		neighbors = df_underworld_items.abm_neighbors.pit_plasma,
		interval = 2,
		chance = 30,
		catch_up = false,
		action = function(pos)
			local sparkle_pos
			for x = pos.x-1, pos.x+1 do
				for y = pos.y-1, pos.y+1 do
					for z = pos.z-1, pos.z+1 do
						local test_pos = {x=x, y=y, z=z}
						local node_name = minetest.get_node(test_pos).name
						if minetest.get_item_group(node_name, "pit_plasma_resistant") == 0 then
							sparkle_pos = test_pos
							if minetest.get_item_group(node_name, "stone") > 0 then
								if math.random() < 0.66 then
									minetest.set_node(test_pos, {name="df_underworld_items:glow_amethyst"})
								else
									minetest.set_node(test_pos, {name=lava_source})
								end
							else
								minetest.set_node(test_pos, {name="air"})
							end
						end
					end
				end
			end
			if sparkle_pos then
				sparkle(sparkle_pos)
			end		
		end,
	})
end
minetest.register_abm({
	label = "glowing pit sparkle",
	nodenames = {"group:pit_plasma"},
	neighbors = {"air"},
	interval = 2,
	chance = 30,
	catch_up = false,
	action = function(pos)
		local air_pos = minetest.find_node_near(pos, 1, "air")
		if air_pos then
			sparkle(air_pos)
		end
	end,
})