test_ingame.lua

local conf = modlib.mod.configuration()
local ml_mt = modlib.minetest
if conf.liquid_dir then
	minetest.register_abm{
		label = "get_liquid_corner_levels & get_liquid_direction test",
		nodenames = {"group:liquid"},
		interval = 1,
		chance = 1,
		action = function(pos, node)
			assert(type(node) == "table")
			for _, corner_level in pairs(ml_mt.get_liquid_corner_levels(pos, node)) do
				minetest.add_particle{
					pos = vector.add(pos, corner_level),
					size = 2,
					texture = "logo.png"
				}
			end
			local direction = ml_mt.get_liquid_flow_direction(pos, node)
			local start_pos = pos
			start_pos.y = start_pos.y + 1
			for i = 0, 5 do
				minetest.add_particle{
					pos = vector.add(start_pos, vector.multiply(direction, i/5)),
					size = i/2.5,
					texture = "logo.png"
				}
			end
		end
	}
end
if conf.liquid_raycast then
	minetest.register_globalstep(function()
		for _, player in pairs(minetest.get_connected_players()) do
			local eye_pos = vector.offset(player:get_pos(), 0, player:get_properties().eye_height, 0)
			local raycast = ml_mt.raycast(eye_pos, vector.add(eye_pos, vector.multiply(player:get_look_dir(), 3)), false, true)
			for pointed_thing in raycast do
				if pointed_thing.type == "node"
					and minetest.registered_nodes[minetest.get_node(pointed_thing.under).name].liquidtype == "flowing"
				then
					minetest.add_particle{
						pos = vector.add(pointed_thing.intersection_point, vector.multiply(pointed_thing.intersection_normal, 0.1)),
						size = 0.5,
						texture = "object_marker_red.png",
						expirationtime = 3
					}
				end
			end
		end
	end)
end