Is there a way to make something stop moving when it hits an edge of the screen?

[grootnb...@gmail.com]

In a game I'm working on, the player can do something that lets them move left or right until they bump into a wall. That's easy enough, but how do I make them stop moving when they bump into the edge of the screen? The only thing I can think of is to make a completely black object and surround the game maps with it. But is there some kind of variable that I can use to make something happen when the player bumps into the edge of the screen?

[Stephen Lavelle]

in general yeah surrounding the level with a wall is the best way

Am Mo., 26. Apr. 2021 um 01:48 Uhr schrieb grootnb...@gmail.com <grootnb...@gmail.com>:

In a game I'm working on, the player can do something that lets them move left or right until they bump into a wall. That's easy enough, but how do I make them stop moving when they bump into the edge of the screen? The only thing I can think of is to make a completely black object and surround the game maps with it. But is there some kind of variable that I can use to make something happen when the player bumps into the edge of the screen?

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[Pedro PSI]

Surrounding the level with walls is probably the easiest way, but here's a small example in case you need to actually detect the screen edges.

The idea is to place markers everywhere, then remove them where there's an adjacent background tile in a particular direction. The markers survive only at the edges, and can be used to create a "bump". The markers could be hidden with a transparent colour as needed. Voila!

Cheers,

Pedro PSI

[grootnb...@gmail.com]

Thanks for the tip, Pedro! I'll try that out. And if it doesn't work right, I'll just use surrounding the screen.