In the previous recipe, we wanted to immediately instantiate and play a particle system as soon as the player's character collided with a crystal GameObject. However, there are times where we want to delay for a few moments when we want a prefab to be instantiated. This recipe customizes the previous one, in that we'll allow our player to move around the scene while dropping bombs. 3 seconds after being dropped, that bomb will be replaced by an explosion - an instantiation of our explosion Particle System from the previous recipe. This recipe is inspired, although in a much simplified form, by games such as BomberMan:
Figure 14.35 – Our Unity BomberMan
