Code de déplacement 2D Game Maker 8

obj_perso:
STEP:
     If a position is collision free (x=0;y=1;Relative)
     Set gravity (direction=270;gravity=0.8)
     Else
     Set gravity (direction=270;gravity=0)

COLLISION SOL:
     Set vertical speed (0)

COLLISION MUR:
     Start moving in a direction (direction=0;Speed=0)


PRESS LEFT/RIGHT
     Start moving in a direction (direction=left/right;Speed=6)

RELEASE LEFT/RIGHT
     Start moving in a direction (direction=0;Speed=0)