Idle State Sprites

[nightm4re94]

^{This post has been migrated automatically from the old LITIENGINE forum (2018 - 2022).
Posted: 2022-11-11 18:39:36
User: Bernie [] (age: 98 days 🎓; posts: 8)}
Hi,
I just found out that the idle state of the Sprites is somehow not working as expected (at least how I understood it). In the Demo Game https://litiengine.com/docs/tutorials/creating-a-platformer/ even when the Creature is not moving right or left it's still in the "walk" state and not the idle state, but the picture is there for the idle state. Is this a bug or am I using it wrong, is there a fix or workaround possible?
Thank you
Bernie

[nightm4re94]

^{This post has been migrated automatically from the old LITIENGINE forum (2018 - 2022).
Posted: 2022-11-15 21:06:06
User: nightm4re [Admin 👑, Mod 🔧] (age: 1567 days 🔥; posts: 185)}
Unfortunately, you've been doing everything right. I've just had a look into this problem and there is a nasty bug in the physics engine:
The gravity force is setting the player location in every update, even though the location has not changed due to the player already colliding with something. Therefore the last player movement is reset on every update and the player never goes idle.
As a workaround, try this in the player implementation:

@Override
 public void setLocation(final Point2D position) {
 if (position.equals(getLocation())) {
 return;
 }
 super.setLocation(position);
 }

Thanks for bringing this to my attention - this has uncovered some deeper problems with how forces work.