(S) How do I stop drag and drop trough walls.

Hey, I'm trying to make a game where you need to drag a ball trough a maze.

I'm using drag and drop to drag the ball, but I don't know how to stop it from going trough the walls...

I first made it drop the ball on collision with the wall, but then you can just pick it back up and go trough the wall;

Then I added the physics behaviour to both the ball and the walls and made the walls immovable so that when I drop the ball, it would get "flinged" out of the wall.

But this isn't quite what I want... I'd like to keep dragging the ball even if the mouse is over a wall, but the ball to stop at the border with the wall and to move only sideways with the mouse...

So, is there a way to get this to work?

Thanks!

I'm sure adding Solid behaviour to both, walls and the ball, will solve your problem

I'm sure adding Solid behaviour to both, walls and the ball, will solve your problem

I added it, but the ball still goes trough the walls...

bump...

... haha i hate drag and drop too!!

too many variables to make it work perfect.

I can help to u if u upload a simple capx.

Cheers.

Use my method:

This is a start:

Global number x0

Global number y0

Global number x1

Global number y1

Start of layout

--- set x0 to Sprite.x

--- set y0 to Sprite.y

Every tick

--- set x1 to Sprite.x

--- set y1 to Sprite.y

--- Sprite: set position to (x0,y0)

--- Sprite: set angle towards (x1, y1)

Repeat distance(x0,y0, x1,y1) times

--- Sprite: move forward 1 pixel

------ Sprite: is overlapping wall

--------- stop loop

--------- Sprite: move forward -1 pixels

Every tick

--- set x0 to sprite.x

--- set y0 to Sprite.y

That will stop the Sprite at walls when being dragged. Having it slide against the walls is more deluxe. There are a few examples around the forum. Not exactly simple but there may be other ways.

... haha i hate drag and drop too!!

too many variables to make it work perfect.

I can help to u if u upload a simple capx.

Cheers.

Use my method: how-do-i-set-drag-bounds-for-a-sprite_t122964?&start=10&hilit=drag

This is a start:

Global number x0

Global number y0

Global number x1

Global number y1

Start of layout

--- set x0 to Sprite.x

--- set y0 to Sprite.y

Every tick

--- set x1 to Sprite.x

--- set y1 to Sprite.y

--- Sprite: set position to (x0,y0)

--- Sprite: set angle towards (x1, y1)

Repeat distance(x0,y0, x1,y1) times

--- Sprite: move forward 1 pixel

------ Sprite: is overlapping wall

--------- stop loop

--------- Sprite: move forward -1 pixels

Every tick

--- set x0 to sprite.x

--- set y0 to Sprite.y

That will stop the Sprite at walls when being dragged. Having it slide against the walls is more deluxe. There are a few examples around the forum. Not exactly simple but there may be other ways.

Oh wow, didn't expect it to be this difficult... Is there a simpler way of doing it?

Here's a capx: https://www.dropbox.com/s/6cvo3w40rdv9u ... .capx?dl=0

It doesn't get too much simpler. With Alextro's you can still drag through the walls, and it may not work well for long shapes. If you tried the code I posted it would stop at walls but would snag on them and not slide.

For sliding here are two different ways. The first moves horizontally then vertically a step at a time. Sliding works very well for unrotated walls.

https://www.dropbox.com/s/s70h5bf670edb ... .capx?dl=0

The second just pastes in the wall slide events I've used elsewhere with some other capx's. It's surprisingly modular I must say. Anyways, it requires putting an imagepoint at the corners of the walls, but the end result is smooth wall sliding.

https://www.dropbox.com/s/251tpcwb6mg0u ... .capx?dl=0

It doesn't get too much simpler. With Alextro's you can still drag through the walls, and it may not work well for long shapes. If you tried the code I posted it would stop at walls but would snag on them and not slide.

For sliding here are two different ways. The first moves horizontally then vertically a step at a time. Sliding works very well for unrotated walls.

https://www.dropbox.com/s/s70h5bf670edb ... .capx?dl=0

The second just pastes in the wall slide events I've used elsewhere with some other capx's. It's surprisingly modular I must say. Anyways, it requires putting an imagepoint at the corners of the walls, but the end result is smooth wall sliding.

https://www.dropbox.com/s/251tpcwb6mg0u ... .capx?dl=0

Alight then, thanks!

Forget drag and drop, try this way.

https://mega.nz/#!EpE22YLb!Rn2OZ5Bi4-bVFt1_y59qt5RPSrnOIQdaIuV034HibR8

Cheers.

Forget drag and drop, try this way.

https://mega.nz/#!EpE22YLb!Rn2OZ5Bi4-bVFt1_y59qt5RPSrnOIQdaIuV034HibR8

Cheers.

Thanks, but it seems like a lot more work than R0J0hound's solution...

I think I'll go with that one.