how to follow the path

[deadteck]

Hey everyone, Im looking for code that would make it so that if your pointing at 30 degress off of 0 degrees, and you want to go straight that you actually go straight, and not along the x or y axisif you get what Im saying. any help would be good, BTW, I have an angle variable if that can help.

[sproingie]

http://www.khanacademy.org/math/trigonometry/v/basic-trigonometry

TL;DW version: sin is the Y component of movement, cos is X

[deadteck]

I know about trigonometry and all, im just looking for any code to help because I cant find it anywhere

Games published by our own members! Check 'em out!

[Eli Delventhal]

Trig / vector math, in a 2D environment that means sine and cosine.

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float angle = (float) Math.toRadians(30); float xDir = (float) Math.cos(angle); float yDir = (float) Math.sin(angle); float pixelSpeed = 10; xPos += xDir * pixelSpeed; yPos += yDir * pixelSpeed;

[deadteck]

what about a 3d environment, and here is the code for the class

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package com.game.Fearless.input; public class Controller {        public double x, z, rotation, xa, za, rotationa, angle;        public void tick(boolean forward, boolean left, boolean back, boolean right, boolean turnLeft, boolean turnRight) {             double rotationSpeed = 0.025;       double walkSpeed =0.0025;       double xMove = 0;       double zMove = 0;             if (forward) {          if (back == false) {             zMove++;             z += za;          }       }       if (left) {          if (right == false) {             xMove--;             x -= xa;          }       }       if (back) {          if (forward == false) {             zMove--;             z -= za;          }       }       if (right) {          if (left == false) {             xMove++;             x += xa;          }       }       if (turnLeft) {          rotationa = 0;          if (turnRight == false) {             angle += rotationa * rotationSpeed;          }          rotation -= angle;       }       if (turnRight) {          rotationa = 0;          if (turnLeft == false) {             angle += rotationa * rotationSpeed;          }          rotation += angle;       }                   xa += (xMove * Math.cos(angle) + zMove * Math.sin(angle)) * walkSpeed;       za += (xMove * Math.cos(angle) - zMove * Math.sin(angle)) * walkSpeed;                 System.out.println("X= " + x + " Z= " + z + " Rotation= " + rotation);    } }

[Eli Delventhal]

Don't think he's ready for 3D if he can't figure this out in 2D. 

[ReBirth]

Furthermore, 3D in pure Java is pain
Most of distance techniques in Java2D can be used in 3D world, just need to increase the degree.