In a designer's toolbox, one of the most effective tricks used to make things look stunning are particle systems. We can spawn a large number of particles which are small simple images or meshes, without much of a performance hit. Particle systems control these particles and their display and movement. They are very useful for elements such as liquid, smoke, clouds, magic, and in this instance, fire, as we bring life to our house's fireplace.
This recipe assumes that you have a project open with the Sample Assets included as well as a room created with
Geometry Brushes (BSP). I have provided a sample level (ModernHouseBase), which will be used for this demonstration. It is included in the Example Code, which you can access from Packt's website. If you are not familiar with building levels using BSP, feel free to follow the instructions for the Building a Room recipe of Chapter 2, Level Design – Building Out Levels or Greyboxing.