Well the opposite of the last action depends on how you have your actions set up, which I do not know.

You could also keep track of the locations that an object has been to instead, and use those to move instead.

Each object can have its own history. So when you use undo just do it for each object based on it's own history, and keep track even if it didn't move.

I can put an example together later.

Edit: dropbox.com/s/1vi6kp5p7lcn30n/undo_example.c3p

It works ! but when you are at the initial position, players go to x.0 y.0. How can i avoid to do that ? if you spam Undo.

Or the player and objects delete itself

Use an array to store a history of moves.

Every time a move is made, push the action/result into the array. When undoing, do the opposite of the last action, and delete it from the array.

I never used array.

Can you make me an example please? Thanks!

i want that my player undo, but even his actions. If he pushes a box, i want to undo too.

cant understand " do the oposite of the last action " how to do that ?

I'm having problem with detection.

I want to make a block changed animation or even spawn another object when close to another one.

But with my code, the green block becomes yellow (change animation) when close to the " fire " brown block. But i need to change the animation of my block when he is not close to the fire block.

Please help !

ibb.co/3cJ0DVM

we.tl/t-ax9t0pPvEw

I know, thats a question many times asked. I even follow this guide : construct.net/en/tutorials/push-objects-tile-based-game-2592

ibb.co/qr7chZg

My player will push the block even if he is at the top left of it.

X0

0B

it should only work if

00

XB

X is the player

B is the block

EDIT : fixed it, but i had to reduce my player hitbox.

But the thing, objects are overlapping when they are at top left and top bottom left

X0

0X

Like this. Can someone explain this to me ?

Your "DistanceJoueurExplosion" is calculated every tick, once all the explosions happened, in event 26.

Simply take the action that make that calculation and add it to event 22 before the "ProjectileImpulsion" destroy action and your code will work as intended.

fixed :)

but now, my mouse is stuck on edged of my screen haha

and not that " fluid " when i a moving it slowly. Like steps and not following the mouse

Thanks !!!

Last thing, now, my mouse cursos is getting stucked on edge of the screen. My computer screen when on full screen. What can i do to not stopped the mouse ?

Turn off all of your other events for setting the angles of you lazer and projectileimpulsion.

Add the events and variables in from my post.

Replace the "turret" in event #3 in my events with "lazer" from yours. (event #13)

Now edit the event Projectileimpulsion - set angle to AngleDiffViseurPerso and instead set angle to lazer.angle. (event #18)

Now the angle of the turret and any spawned projectiles will be set towards the mouse position if the mouse is moving. If the mouse is not moving they will be set to the last angle.

it didnt work... :'( i am so bad

the lazer follows and stop. that is working. But the game didnt keep the last angle, and why i click, the lazer go to the position of the mouse and spawn the projectile.

can you help me please ? : we.tl/t-DTYNfqiC26

i want to work it so bad.. but with my code, it didnt work.

To determine if the mouse is moving you need to save the mouse's coordinates to variables every frame and then compare them to the current coordinates:

Use these events:

Turret is the aim of the mouse ? what's it in your code ?

its not working with my aim cursor which follows the mouse

Do you donwload my project ? there is events for the mouse before, maybe its not working because of this

What is your turret in your code ? the gun of my character ? he doesnt have one