Post by Slyddar in Tile Based Moving Platform Engine for Gamemaker comments

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Hey joe,

I notice what you are referring to, and have now fixed it to ensure it works as you explained. I've uploaded a new version with the changes, v1.0.36. If you want to copy/paste the new code to your version, just look in the collision function and it's the code under the "corner correction" section, lines 129 - 160.

Hopefully it all works as expected, just let me know if there are any issues.

Cheers,

Peter

joe.plain25 days ago

Wow, that was quick. Thank you very much. I wouldn't come up with a solution in a week :)
Works great but, there is a small bug, if we clip the corner jump is one pixel higher then if we don't clip the corner.

Slyddar24 days ago (3 edits)

You're welcome, thanks for pointing out the issue.

The single pixel is interesting. Here is a vid from my testing. The value is the y position the player reaches when we either jump normally or jump into a corner. Both produce the same result of 498. Have you changed the game resolution maybe?

joe.plain24 days ago

I'm sorry, problem was with my modified collision code.
It works fine if I comment out this line:

if tilemap_get_at_pixel(global.map, bbox_left, bbox_top - 1) == VOID y -= 1;

Perhaps I had the problem because I don't use decimals.
I modified the collision code so it works nice without decimals so I get smooth movement.

itch.io

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