Scratch

Sunrise-Moon · 2010-12-24 01:40:30

I've always had a problem with y velocity collision in platformers. Usually, if dropped from a great height, a sprite will fall through the ground. I realize that I can easily correct this by making a sprite always "float" up by 1 pixel if its touching the ground, but that makes the sprite look like it's vibrating up and down, and also feels a bit cheesy. I've seen a few platformers which use y velocity, and still get past this/these problem(s).

How can I get better y collision? Is there a way to do it 1s1s?

Harakou · 2010-12-24 01:50:16

Ah yes. That's always frustrating. To be honest, I'm not totally sure; I don't make platformers much. I suspect that it's use of a bigger sensor, and/or just a better algorithm for deciding movement when touching the ground. hmm

Sunrise-Moon · 2010-12-24 02:00:28

Harakou wrote:
Ah yes. That's always frustrating. To be honest, I'm not totally sure; I don't make platformers much. I suspect that it's use of a bigger sensor, and/or just a better algorithm for deciding movement when touching the ground.

I feel like my mind knows the answer, but it's going so fast I can't read it- It's on the tip of my mind. tongue

Last edited by Sunrise-Moon (2010-12-24 02:01:16)

Kileymeister · 2010-12-24 10:35:55

Hang on, I have the script segment somewhere in my pictures.

Here it is:

Last edited by Kileymeister (2010-12-24 10:36:28)

Sunrise-Moon · 2010-12-24 12:38:33

Kileymeister wrote:
Hang on, I have the script segment somewhere in my pictures.

Here it is:
http://i56.tinypic.com/10crjo5.gif

Thank you! That'll work perfectly! The only problem is it doesn't really detect slopes at all. I can probably fix it with a slope sensor or something, though.

Kileymeister_test · 2010-12-24 13:00:51

Sunrise-Moon wrote:
Kileymeister wrote:
Hang on, I have the script segment somewhere in my pictures.

Here it is:
http://i56.tinypic.com/10crjo5.gif
Thank you! That'll work perfectly! The only problem is it doesn't really detect slopes at all. I can probably fix it with a slope sensor or something, though.

I can add a bit that can do that. Give me a second.

Edit: Put this with that script.

Last edited by Kileymeister_test (2010-12-24 13:03:31)

archmage · 2010-12-24 14:10:52

This project shows the best way to do all collisions.

http://scratch.mit.edu/projects/archmage/101212
download it and look at the scripts

AtomicBawm3 · 2010-12-24 15:31:04

Pretty much what I think everyone else is saying. Set a max velocity for your sprite, create a modding system (when you can), or just have a sensor that finds a better position.

Scratch

archived forums

#1 2010-12-24 01:40:30

Better Y Vel Collision?

#2 2010-12-24 01:50:16

Re: Better Y Vel Collision?

#3 2010-12-24 02:00:28

Re: Better Y Vel Collision?

Harakou wrote:

#4 2010-12-24 10:35:55

Re: Better Y Vel Collision?

#5 2010-12-24 12:38:33

Re: Better Y Vel Collision?

Kileymeister wrote:

#6 2010-12-24 13:00:51

Re: Better Y Vel Collision?

Sunrise-Moon wrote:

Kileymeister wrote:

#7 2010-12-24 14:10:52

Re: Better Y Vel Collision?

#8 2010-12-24 15:31:04

Re: Better Y Vel Collision?

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