SOLVED Problem with my mask position

[Dilawlaw]

Hi guys, I am working on an 8-bit game and I have a problem with the collision mask of the player where it's not situated exactly as I see it on my sprite. I wrote a code to draw a rectangle showing my collision boundaries ( bbox_left, right top, and bottom). here is a zoomed picture of how the game looks compared to the mask I have on my sprite. which doesn't make sense since the boundaries are taking like half a pixel on top and half on the bottom



by the way, I am not scaling the player on anything, just did a zoom on the actual game screenshot, as you can see this problem causes the player to get inside the ground

Does anyone have any idea how to solve this?

 

[Roldy]

Most likely this is caused by bbox values and other collision functions working with integers. If your position is not integer then you may have a difference in the sprite/object position and the bbox position.

Additionally if your sprite origin is set to middle center with an even number of pixels then the middle center is actually a half pixel (not in the center of a single pixel, but between two pixels).

Feel free to verify this and check if it might be the cause of your issue.

 

[Dilawlaw]

Most likely this is caused by bbox values and other collision functions working with integers. If your position is not integer then you may have a difference in the sprite/object position and the bbox position.

Additionally if your sprite origin is set to middle center with an even number of pixels then the middle center is actually a half pixel (not in the center of a single pixel, but between two pixels).

Feel free to verify this and check if it might be the cause of your issue.

You were right! after double-checking I noticed my y position getting weird float values because of my gravity being none integer. I fixed it by flooring the Y value before calculating the ground touch position, THANK YOU!