Troubles in Fast Loops for movement !

Hi guys ! How you doing ?

I'm making a platform engine for my new project ! In order to get proper pixel collisions detection, I'm making the X movement system through a Fast Loop called "move_left" (for left side) and "move_right" (for right side).

But I also want to get sort of a deceleration of the speed when I release the joystick

My "PLAYER" object have an alterable value called "X_SPEED".

When I'm pressing Left + My "left_sensor" isn't overlapping any backdrop
then
Start loop "move_left"


On loop "move_left" + "X_SPEED" is lower than -4 (the maximum speed)
then
sub 0.1 to "X_SPEED"


On loop "move_left" + When I release the Joystic
then
Stop loop "move_left" + Start loop "deccel_left" (deceleration)


On loop "deccel_left" + "X_SPEED" is lower than 0 (so you still have some speed to decelerate)
then
add 0.1 to "X_SPEED"

Until "X_SPEED" = 0 and stop both loops "move_left" and "deccel_left"
OR
"sensor_left" is overlapping a backdrop the stop both loops as well

I did the same thing for right side of the movement


But here is my issue !

When my sensor_left is overlapping a backdrop the "move_left" loop is shut down correctly but my PLAYER is doing anyway the deceleration thing like if the "deccel_left" loop has not been shutting down...

So my PLAYER is still moving left and don't stop where the collision should be


Don't know if I was clear enough for you ! If you want I can send you the file.

I would higly appreciate your help guys !

Thank for your time

If you want pixel-perfect collision detection (and avoid any possible "phasing" into objects),
you'll have to move the sensor and check for overlap inside both of your loops, the movement one and the deceleration one
since both move your player (even if I don't see the player movement code, I assume you move it left/right depending on move_speed?)

On loop "move_left"
>> set sensor at new X,Y position

On loop "move_left"
+ sensor overlaps obstacle
>> negate movement (add to speed if you were subtracting, and the other way around) / stop loop


On loop "deccel_left"
>> set sensor at new X,Y position

On loop "deccel_left"
+ sensor overlaps obstacle
>> negate movement / stop loop


not exactly sure what you are doing though
(i.e. do you already move the sensor inside the loop?
how do you handle player movement?)
a sample .mfa would help clearing things :)

Man this is brilliant I'm an idiot I did not put the sensor position on the loop ! ^^

Before you reply I tried the Platform Mouvement Object which is quit good actualy... I'll try both solution and see what's work best for me.

Thank you so much for the help man