i have this unity 2d code that makes a

[barren echo]

for example, this is how it would normally work,

then this second example, my range variable is set to 45, and when it bounces, it bounces off randomly within the range

[pure notch]

you wanna bounce off imperfectly?

(lets say, within 5 degrees?)

[charred heron]

you are modifying the velocity

[barren echo]

yup

[charred heron]

make the velocity whatever you want it to be lol

[pure notch]

yeah, just rotate the direction vector a bit

[barren echo]

yeah but if i do that it might go off in the same direction

[charred heron]

then calculate the right direction

and put it in

[pure notch]

There's Random.Range to get a number, then there's Quaternion for the rotation or... Vector2.RotateSomething

[charred heron]

angle of incidence = angle of reflection

go do some geometry

and if it isn’t right, then you know your math is wrong

[barren echo]

okok i'll try change the rotation

[charred heron]

also, make sure your rigidbody is in continuous collision mode, or nothing will make sense

what rotation

calculate the direction

btw, a Collision2D can have multiple contacts

[barren echo]

idk the other guy said rotation

[barren echo]

how would i do that

[charred heron]

with math

[barren echo]

does that mean my code is prone to error?

[charred heron]

get a pencil and paper, and start solving

[charred heron]

big time, yes

[pure notch]

(other guy said rotate the direction 😛 )

[barren echo]

i have no idea on where i should start T_T

[charred heron]

red ball hits blue surface, at the two green contacts

your code (even with correct math) will ignore one contact

[pure notch]

so, yeah... sadly such situations require some math knowledge and understanding 😅

[barren echo]

what type of math knowledge though so i can search it up?

[charred heron]

If you plan to do work coding physics, you need to know basic math and physics. If this relatively simple case is not something you can handle on your own, you should probably not be making any physics based code

you need to know basic geometry, trigonometry, and vector math at the very least

if you don’t understand vectors, anything with vectors is going to make your life extremely challenging

in theory, you should have learned everything you really need in high school already

[barren echo]

ok thank you

[barren echo]

yeah im still in 10th grade still haha

[charred heron]

well, pay attention in school. We had a middle aged guy here a couple months ago who wanted to make a football game. He skipped/slept through math. He could not do the simple algebra to calculate where the damn ball should go. That project died.