Well, if it's dead, and you want to respawn more particle, you check the "Alive" list for dead particles, and use them. So you recycling your particles, without creating and deleting types all the time. That my own personal usage for them.
Even more important in single surface stuff i think, as you can't delete vertexs, instead, you have to rebuild the mesh. Sometimes this can be faster. Depends on how many particles you have. (i'm talkin 10,000 odd)
Even more important in single surface stuff i think, as you can't delete vertexs, instead, you have to rebuild the mesh. Sometimes this can be faster. Depends on how many particles you have. (i'm talkin 10,000 odd)