Make a decision to avoid bombs
Acknowledge explosions to remove bombs from db

To avoid counting duplicate bombs.

Signed-off-by: Aharon Campos <aharoncampos@gmail.com>
Add separate behaviour for processing player positions

Just as is being done for bombs... And we leave a regular
ticking behaviour only for processing movements.

Signed-off-by: Aharon Campos <aharoncampos@gmail.com>