Character Movement (Velocity question)

[Kilinich]

e.this.vel = e.this.vel = [2, 0]

what should that do? why x = x = y ?

[FRA32]

Put this in postStep (the standard area for in-scene-code):
vel=[0,vel(1)]; //(Disables any horizontal movement)
keys.isDown("Right") ? {
vel=vel+[2,0]
} : {}
keys.isDown("Left") ? {
vel=vel-[2,0]
} : {}
keys.isDown("Up") && !_jump ? {
vel=vel+[0,4];
_jump = true;
} : {}
vel = [vel(0), vel(1)-9.81/sim.frequency] //(replace 9.81 with any number to adjust the falling accelleration, or leave line out if you use scene gravity)


The code makes the character move to the left/right when you have the button pressed and makes it jump upwards as long as the _jump variable is false. If the left/right button is not pressed, the velocity turns 0. If you use the last line, it will fall down at the rate you wish(undertale has slow falling).