Grimrock

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defineObject{
  name = "eruption",
  components = {
    {
      class = "Light",
      offset = vec(0, -0.5, 0),
      range = 10,
      color = vec(2.8, 1.2, 0.7),
      brightness = 1,
      fadeOut = 6,
      castShadow = false,
      destroyObject = true,
    },
    {
      class = "Particle",
      particleSystem = "eruption",
    },
    {
      class = "Projectile",
      spawnOffsetY = 0,
      velocity = 1,
      radius = 0.1,
      gravity = 4,
      fallingVelocity = 4,
      destroyOnImpact = false,
      onProjectileHit = function(self, what, entity)
        self.go.particle:stop()
      end,
      onInit = function(self)
        self.go:setSubtileOffset(math.random()-0.5, math.random()-0.5)
        self:setFallingVelocity(math.random()*2+3)
        self:setVelocity(math.random()*2)
      end,
    },
    --{
      --class = "Sound",
      --sound = "fire_pit",
      --volume = 0.5,
    --},
  },
  placement = "floor",
  editorIcon = 88,
}

defineParticleSystem{
  name = "eruption",
  emitters = {
    -- star
    {
      --spawnBurst = true,
      emissionRate = 200,
      emissionTime = 3,
      maxParticles = 700,
      boxMin = {0,0,0},
      boxMax = {0,0,0},
      sprayAngle = {0,0},
      velocity = {0,0},
      objectSpace = false,
      texture = "assets/textures/particles/candle_glow.tga",
      lifetime = {1,1},
      color0 = {4, 0.4, 0.2},
      opacity = 1,
      fadeIn = 0,
      fadeOut = 1,
      size = {0.05, 0.1},
      gravity = {0,0,0},
      airResistance = 0.1,
      rotationSpeed = 5,
      blendMode = "Additive",
    },
  }
}

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for f = 0,3 do spawn("eruption", self.go.level, self.go.x, self.go.y, f, self.go.elevation) end