Angle collision question

[CyanPrime]

Okay, so I got this collision algorithm for angle 180 (down) and I wanna know what I got to do to make it work for all angles.

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if(new Rectangle((int)ball.x, (int) ball.y, ball.size, ball.size).intersects(new Rectangle(wall[i].x, wall[i].y, wall[i].width, wall[i].height))){             ball.y -= (ball.y + ball.size) - wall[i].y;             ball.angle = 0 //up         }

[ra4king]

Vectors should be much easier. You can just invert the direction when you hit the wall.

This should help:
http://www.java-gaming.org/index.php/topic,23930

[CyanPrime]

Okay, so so far I got this:

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@Override     public void update(GameContainer gc, int delta)          throws SlickException         {        ball.position.add(ball.velo);        ball.velo.add(ball.accel);        ball.accel = ball.velo.scale(0.5f);     }

This is slowly moving this ball towards my paddle:

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public class Ball {    int size = 30;    float speed = 0.2f;    float maxSpeed = 6;        float angle;        Vector2f position;    Vector2f velo;    Vector2f accel;        public Ball(){       velo = new Vector2f(0,speed);       position = new Vector2f(640/2 - size/2, 200);       accel = new Vector2f(0,speed);    } }

But how would I apply my collision algorithm to this?

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[ReBirth]

I wonder why it's "ball.position.add(ball.velo);" ? there is posistion class inside your ball class? or what?

[CyanPrime]

It's a Vector2f (Slick lib).