reworked some of the struture of the code.
Got basic movement of enemies.
Added randomness to enemies movements.
Made it so enemies can move around barriers.
Imporved enemy random choices.
Got enemy to turn twords player and fixed bug were the player could push
the enemies around.
Fixed FPS slowdown due to path calculations.
Added different sprite for brawling enemies.
Merge branch 'issue11' into develop