Psilocybeing has released a demo of his RPG for the PSP, heres some info:
Here's a look at the linking of origin/destination of particle streams with entity entries. You can check out the demo eboot aswell if you want. The speed will drop due to there being many particles alive, but in the actual game there should never be anywhere near as many particles being managed as are currently in this tech demo.
As you can see from the screenshot below, particles that have linked origin AND destination pointers will use those two locations and calculate the heading and lifetime required to get to that point at a random speed between a min/max range.
Check out the download and screenshot Via Comments