Bouncing doesn't work correctly...

riseagainst378

at the moment, i'm making a simple top-down game where different orbs will bounce off solid, rectangular walls indefinitely. however, if the ball impacts the wall at a low enough angle, "bounce" no longer works -- instead, the orb "sticks" to the wall, and runs horizontally or vertically alongside it. i'm wondering if this is a problem with me or with the engine itself...does anyone else have this problem?

thanks in advance.

Dooki

Have you played with the "Restitution" value under the Physics tab in the actors attribute pane? Play with that value (.01, .08, etc) and test.

riseagainst378

which actor's restitution should i be adjusting? i've tried 0, 1, 2, and multiple things in between for the orbs...changing the wall doesnt seem to be doing anything

StusApps

also check the friction settings.

riseagainst378

restitution for the orbs is 2...restitution for the wall is 0.
friction for both of them is zero. i'm sure there's something blindingly obvious that i'm doing wrong here, but i can't seem to figure it out...

thanks for all the help so far.

riseagainst378

does anyone have any other ideas as to what this problem could be? or maybe a link to a tutorial about movement? i can't seem to find too much on the subject...

Tyvan

Try these settings

Orbs: Density 1
Friction 3
Restitution 0.1

Wall: Density 1
Friction 300
Restitution 0.3

riseagainst378

just tried those settings. the only difference now is that the orbs stick to the wall and slow down in speed.

maybe i did something wrong with the objects themselves?

Walls
Density: 1
Friction: 300
Restitution: 0.3
Fixed Rotation: False
Movable: False
Collision Shape: Rectangle
Drag: 0
Angular Drag: 0

Orbs
Density: 1
Friction: 3
Restitution: 0.1
Fixed Rotation: True
Movable: True
Collision Shape: Circle
Drag: 0
Angular Drag: 0

before this, i had the orbs' friction set to 0 (as they are always supposed to move at a continuous speed), and restitution set to 2.

Tyvan

Make sure you have the orbs collide set to scene and not actor.

When I get home I will take a look at it.

riseagainst378

i'm sorry, i'm a little new to this...how do you set the collision to scene instead? my collision event doesn't have an option for that, and i can't seem to find a place to give the scene itself any behaviors, if that was what you meant.

and thank you for your time, i really appreciate it. i tend to overthink things when they don't involve code...

Tyvan

So go into the scene, then click the actor Orb's is on. Then in your collide rule there will be a slider to pick either collide with scene or actor.

riseagainst378

is this slider supposed to be inside the original actor? i can't seem to find a slider anywhere. the only thing available for my collide rule is to "bounce when colliding with tag Obstacle", which is what all my walls are under.

riseagainst378

bumping this up again...

riseagainst378

any other ideas? i hate to continually bump the thread but i can't seem to figure this out. about to scrap the GS movement and write something myself...seems like something silly must be missing, though, to make this happen.

firemaplegames

I have a magnitude demo in the games section of my wall. It might be able to help you. The balls move at a steady velocity.