gistfile1.lua

minetest.register_node(":default:lava_source", {
	description = "Lava",
	inventory_image = minetest.inventorycube("default_lava.png"),
	drawtype = "liquid",
	--tiles ={"default_lava.png"},
	tiles ={
		{name="default_lava_source_animated.png", animation={type="vertical_frames", aspect_w=16, aspect_h=16, length=3.0}}
	},
	special_tiles = {
		-- New-style lava source material (mostly unused)
		{name="default_lava.png", backface_culling=false},
	},
	paramtype = "light",
	light_source = LIGHT_MAX - 1,
	walkable = false,
	pointable = false,
	diggable = false,
	buildable_to = true,
	liquidtype = "source",
	liquid_alternative_flowing = "default:lava_flowing",
	liquid_alternative_source = "default:lava_source",
	liquid_viscosity = LAVA_VISC,
	damage_per_second = 4*2,
	post_effect_color = {a=192, r=255, g=64, b=0},
	groups = {lava=3, liquid=2, hot=3},
	
	on_construct = function(pos)
		if pos.y >= 0 then
			minetest.env:remove_node(pos)
		end
	end,
})

local lava = {}
for k,v in pairs(minetest.registered_nodes["default:lava_source"]) do lava[k] = v end
lava.on_construct = function(pos) if pos.y >= 0 then minetest.env:remove_node(pos) end end
minetest.register_node(":default:lava_source", lava)