Forums » Help » Entity.vel.y Not 0 on One-Way Platforms

I noticed some strange behavior when using 1-way platforms in my scrolling platform game.

-- When applying accel.x to my objects they seemed 'stuck'.
-- I also noticed that I was (generally) unable to jump when on the 1-way platform.

Both work fine on a normal solid.

I did some debugging and noticed that the vel.y for my player was generally not 0 when it was standing on the platform. The value ranged between -0.10 and -0.15 or so. In the case of 'jump' not working, it was because I was checking Entity.standing, but this value was false because of the minute downward motion.

I worked around it by allowing Entity.standing to be true for Entity.vel.y < -1.

I'm not sure if this is a bug or if I'm doing something wrong, but I thought I would ask. Thanks!

Using Impact 1.22.

You&039;re doing it right. The thing with #.standing is that it is set, I believe, only by the environment. If you are standing on top of a moving platform entity, or any entity for that matter, it will always remain false.

You have to check for those cases yourself.

Thanks, Joncom. Perhaps I'm misunderstanding the situation, but I'm using the one-way platform tile that's part of the Impact collision layer. To the best of my understanding, this isn't an entity but rather a collision tile that handles x,y axis collisions differently and is stationary.

What I found strange is that when my entity is standing on it, the object still shows slight downward velocity. I could only detect this via debugging -- it's not visually apparent, but the behavior of my entity was definitely different on the one-way platforms.