a.k.a. box05

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WallType = annihilation, meaning that the particles that hit the wall will be annihilated.

Next Step: WallType = PORTAL, meaning that the walls are portal to the other side i.e. Left to Right, Top to Bottom. (May be color the boxes as well, or make them circular, which is how the mechanic is treating them).

Problems with PORTAL:
1. particle count will dwindle slowly
2. the universe will adopt a toroid topography, meaning no center. Thus, it will take a lot more time for the 'galaxies' to develop, but will provide a more realistic simulation
3. The forces will have to be adapted for toroid topography, which require some recoding and more complicated maths.