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Player stutters left and right when running against wall

by Greg C · in Torque Game Builder · 10/06/2013 (7:46 am) · 4 replies

I am using the common platformer movement script found in the ninja platformer tut and I find that when my player runs into a wall, if I keep attempting to move against it, instead of just stopping the player, he jitters and stutters against the wall, almost bouncing on/off it really fast.

Is there anything I can do to have the sprite just stop when it reaches the wall of the tilemap blocks?

T2D 1.8 - TGB 1.7.6
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Torque Owner Greg C
#1
10/06/2013 (8:16 am)
To add to this, I want the player to stop dead in his tracks, similar to if you set the players world limit to clamp and how it will then stop when it reaches the world limit boundary.

Torque Owner Richard Ranft
Roostertail Games
#2
10/06/2013 (9:27 am)
He is bouncing off of it really fast - your input is telling the sprite to add velocity in that direction, then it collides with the wall and bounces back. Off the top of my head, if you place a trigger at each point that you can run into a wall you can use onEnter and onLeave trigger to disable/enable movement in the direction of the wall - this would prevent that behavior, but it isn't a very good solution.

Torque Owner Greg C
#3
10/06/2013 (10:35 am)
I have set the "Collision Response" property of both the player and the tilemap blocks to "Clamp". I would expect it to clamp, not bounce. The player doesn't bounce around on the floor, only the walls. I was sort of approaching something similar to what you mention, but just through some additional collision code, but I figured I would post here first before I attempted to handle it myself as it seems like something that would just work.

Torque Owner Greg C
#4
10/08/2013 (5:13 pm)
I ended up using the same method that is used to find if the floor is about to be beneath you, with castCollision(), but across the x axis instead of the y. Seemed to work ok, but i think that when I pushed the values to where the player didn't bounce any more, that it pushed them out from the wall a bit. The player is not real close to the wall, they would have been closer given the player just clamped to a wall.

I also had issues with this method when attempting to use triggers, which I am going to post about in my other active thread.