[Javascript] Character Controller + SmartJump!

Unity Engine
1

Before I begin, I would like to note that I’m not quite sure which forum to post this in, so I chose the most related one. :wink:

I have written a javascript “Smart Jump” that will jump a player to the block above it [with multi-jump capability]. I also included the character controller script along with it. Here it is!:

//This game is block/tile-based, so each 40x40 sprite is changed with [Pixels to Units] so they are 1x1 unit.
#pragma strict
var speed = 0.05;
var maxJump = 3;
private var jump = 1;

function Start()
 {
 //Freeze rotation +fix z-rotation problem [player spawns and immediately collides, causing slight z rotation, but with my initiation script (spawn blocks according to position in array)]
 transform.eulerAngles.z = 0;
 rigidbody2D.fixedAngle = true;
 }

function Update()
 {
 //Check for collision in all directions [fortunately not *that* FPS intensive]
 var right : RaycastHit2D = Physics2D.Raycast(Vector2(transform.position.x+0.5,transform.position.y), Vector2.right,  0.00001);
 var left  : RaycastHit2D = Physics2D.Raycast(Vector2(transform.position.x-0.5,transform.position.y), -Vector2.right, 0.00001);
 var down  : RaycastHit2D = Physics2D.Raycast(Vector2(transform.position.x,transform.position.y-0.501), -Vector2.up,      0.1);

 //Get right-left input
 if(Input.GetKey("d")  !right)
  transform.Translate(Vector3( speed,0,0));
 else if(Input.GetKey("a")  !left)
  transform.Translate(Vector3(-speed,0,0));

 //Get jump input + check if exceeded maxJump
 if(Input.GetKeyDown("w")  jump < maxJump)
  {
  jump++;
  //Get the distance towards to nearest block
  var distance = (Mathf.Round(transform.position.y+1) - transform.position.y)+0.05;

  //Reset y velocity
  rigidbody2D.velocity.y = 0.0;
  //Forumla for distance jumps
  rigidbody2D.velocity.y += Mathf.Sqrt(distance * 2 * -Physics.gravity.y);
  }

 //Reset jump count if grounded
 if(down)
  jump = 1;
 }

Thanks!

|Edits->
|| 1: Slightly changed jump height +[0.01]
|| 2:Added raycast for checking if player grounded +changed raycast length
|| 3:Slightly changed maxjump code [starts at one now]

2

Thats brilliant and supersimple.

Will use this for when I need some quick controls to test with.

Thanks

3

Hmm, it must not be in the right section. Anybody knows where it is supposed to go?