vm_lighting_wand/core/effects.lua

local MT = minetest
local vMod = vm_lighting_wand

local play_sound = MT.settings:get_bool(vMod.modname .. "_sound", true)
local play_particles = MT.settings:get_bool(vMod.modname .. "_particles", true)
local play_wand_particles, play_wand_sound

-- Main function to play effects
vMod.play_effects = function(player_pos, node_pos)
	if play_sound then
		play_wand_sound(player_pos)
	end
	if play_particles then
		play_wand_particles(node_pos)
	end
end

play_wand_sound = function(pos)
	MT.sound_play(vMod.modname, {pos = pos, gain = 0.1, max_hear_distance = 6})
end

-- spawns particles at given pos
local speed = 24
play_wand_particles = function(pos)
	for _, color in pairs({"green", "red", "blue", "yellow"}) do
		MT.add_particlespawner(
			{
				amount = 20,
				time = 1,
				minpos = {x = pos.x + 2, y = pos.y + 2, z = pos.z + 2},
				maxpos = {x = pos.x - 2, y = pos.y - 2, z = pos.z - 2},
				minvel = {x = -1, y = -1, z = -1},
				maxvel = {x = 1, y = 1, z = 1},
				minacc = {x = -speed, y = -speed, z = -speed},
				maxacc = {x = speed, y = speed, z = speed},
				minexptime = 1,
				maxexptime = 3,
				minsize = 0.5,
				maxsize = 1.5,
				vertical = false,
				collisiondetection = false,
				texture = vMod.modname .. "_particle_" .. color .. ".png"
			}
		)
	end
end