What You Just Did
Before we get into all of that, let's review what you did this chapter:
You learned about particles and particle systems.
You created a custom vertex.
You created a particle engine that moves, adds, and removes particles to create a sphere-shaped explosion.
You created an HLSL effect file that sets the size of the vertices and sets the colors based on texture coordinates.
You created a starfield background using a modified particle engine that draws particles but doesn't remove them or move them around.
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