topical media & game development

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mobile-query-three-vendor-three.js-controls-FirstPersonControls.js / js



  

author: mrdoob / mrdoob.com/
author: alteredq / alteredqualia.com/
author: paulirish / paulirish.com/

  
  
  THREE.FirstPersonControls = function ( object, domElement ) {
  
          this.object = object;
          this.target = new THREE.Vector3( 0, 0, 0 );
  
          this.domElement = ( domElement !== undefined ) ? domElement : document;
  
          this.movementSpeed = 1.0;
          this.lookSpeed = 0.005;
  
          this.lookVertical = true;
          this.autoForward = false;
          // this.invertVertical = false;
  
          this.activeLook = true;
  
          this.heightSpeed = false;
          this.heightCoef = 1.0;
          this.heightMin = 0.0;
          this.heightMax = 1.0;
  
          this.constrainVertical = false;
          this.verticalMin = 0;
          this.verticalMax = Math.PI;
  
          this.autoSpeedFactor = 0.0;
  
          this.mouseX = 0;
          this.mouseY = 0;
  
          this.lat = 0;
          this.lon = 0;
          this.phi = 0;
          this.theta = 0;
  
          this.moveForward = false;
          this.moveBackward = false;
          this.moveLeft = false;
          this.moveRight = false;
          this.freeze = false;
  
          this.mouseDragOn = false;
  
          this.viewHalfX = 0;
          this.viewHalfY = 0;
  
          if ( this.domElement !== document ) {
  
                  this.domElement.setAttribute( 'tabindex', -1 );
  
          }
  
          //
  
          this.handleResize = function () {
  
                  if ( this.domElement === document ) {
  
                          this.viewHalfX = window.innerWidth / 2;
                          this.viewHalfY = window.innerHeight / 2;
  
                  } else {
  
                          this.viewHalfX = this.domElement.offsetWidth / 2;
                          this.viewHalfY = this.domElement.offsetHeight / 2;
  
                  }
  
          };
  
          this.onMouseDown = function ( event ) {
  
                  if ( this.domElement !== document ) {
  
                          this.domElement.focus();
  
                  }
  
                  event.preventDefault();
                  event.stopPropagation();
  
                  if ( this.activeLook ) {
  
                          switch ( event.button ) {
  
                                  case 0: this.moveForward = true; break;
                                  case 2: this.moveBackward = true; break;
  
                          }
  
                  }
  
                  this.mouseDragOn = true;
  
          };
  
          this.onMouseUp = function ( event ) {
  
                  event.preventDefault();
                  event.stopPropagation();
  
                  if ( this.activeLook ) {
  
                          switch ( event.button ) {
  
                                  case 0: this.moveForward = false; break;
                                  case 2: this.moveBackward = false; break;
  
                          }
  
                  }
  
                  this.mouseDragOn = false;
  
          };
  
          this.onMouseMove = function ( event ) {
  
                  if ( this.domElement === document ) {
  
                          this.mouseX = event.pageX - this.viewHalfX;
                          this.mouseY = event.pageY - this.viewHalfY;
  
                  } else {
  
                          this.mouseX = event.pageX - this.domElement.offsetLeft - this.viewHalfX;
                          this.mouseY = event.pageY - this.domElement.offsetTop - this.viewHalfY;
  
                  }
  
          };
  
          this.onKeyDown = function ( event ) {
  
                  //event.preventDefault();
  
                  switch ( event.keyCode ) {
  
                          case 38: /*up*/
                          case 87: /*W*/ this.moveForward = true; break;
  
                          case 37: /*left*/
                          case 65: /*A*/ this.moveLeft = true; break;
  
                          case 40: /*down*/
                          case 83: /*S*/ this.moveBackward = true; break;
  
                          case 39: /*right*/
                          case 68: /*D*/ this.moveRight = true; break;
  
                          case 82: /*R*/ this.moveUp = true; break;
                          case 70: /*F*/ this.moveDown = true; break;
  
                          case 81: /*Q*/ this.freeze = !this.freeze; break;
  
                  }
  
          };
  
          this.onKeyUp = function ( event ) {
  
                  switch( event.keyCode ) {
  
                          case 38: /*up*/
                          case 87: /*W*/ this.moveForward = false; break;
  
                          case 37: /*left*/
                          case 65: /*A*/ this.moveLeft = false; break;
  
                          case 40: /*down*/
                          case 83: /*S*/ this.moveBackward = false; break;
  
                          case 39: /*right*/
                          case 68: /*D*/ this.moveRight = false; break;
  
                          case 82: /*R*/ this.moveUp = false; break;
                          case 70: /*F*/ this.moveDown = false; break;
  
                  }
  
          };
  
          this.update = function( delta ) {
  
                  if ( this.freeze ) {
  
                          return;
  
                  }
  
                  if ( this.heightSpeed ) {
  
                          var y = THREE.Math.clamp( this.object.position.y, this.heightMin, this.heightMax );
                          var heightDelta = y - this.heightMin;
  
                          this.autoSpeedFactor = delta * ( heightDelta * this.heightCoef );
  
                  } else {
  
                          this.autoSpeedFactor = 0.0;
  
                  }
  
                  var actualMoveSpeed = delta * this.movementSpeed;
  
                  if ( this.moveForward || ( this.autoForward && !this.moveBackward ) ) this.object.translateZ( - ( actualMoveSpeed + this.autoSpeedFactor ) );
                  if ( this.moveBackward ) this.object.translateZ( actualMoveSpeed );
  
                  if ( this.moveLeft ) this.object.translateX( - actualMoveSpeed );
                  if ( this.moveRight ) this.object.translateX( actualMoveSpeed );
  
                  if ( this.moveUp ) this.object.translateY( actualMoveSpeed );
                  if ( this.moveDown ) this.object.translateY( - actualMoveSpeed );
  
                  var actualLookSpeed = delta * this.lookSpeed;
  
                  if ( !this.activeLook ) {
  
                          actualLookSpeed = 0;
  
                  }
  
                  var verticalLookRatio = 1;
  
                  if ( this.constrainVertical ) {
  
                          verticalLookRatio = Math.PI / ( this.verticalMax - this.verticalMin );
  
                  }
  
                  this.lon += this.mouseX * actualLookSpeed;
                  if( this.lookVertical ) this.lat -= this.mouseY * actualLookSpeed * verticalLookRatio;
  
                  this.lat = Math.max( - 85, Math.min( 85, this.lat ) );
                  this.phi = THREE.Math.degToRad( 90 - this.lat );
  
                  this.theta = THREE.Math.degToRad( this.lon );
  
                  if ( this.constrainVertical ) {
  
                          this.phi = THREE.Math.mapLinear( this.phi, 0, Math.PI, this.verticalMin, this.verticalMax );
  
                  }
  
                  var targetPosition = this.target,
                          position = this.object.position;
  
                  targetPosition.x = position.x + 100 * Math.sin( this.phi ) * Math.cos( this.theta );
                  targetPosition.y = position.y + 100 * Math.cos( this.phi );
                  targetPosition.z = position.z + 100 * Math.sin( this.phi ) * Math.sin( this.theta );
  
                  this.object.lookAt( targetPosition );
  
          };
  
          this.domElement.addEventListener( 'contextmenu', function ( event ) { event.preventDefault(); }, false );
  
          this.domElement.addEventListener( 'mousemove', bind( this, this.onMouseMove ), false );
          this.domElement.addEventListener( 'mousedown', bind( this, this.onMouseDown ), false );
          this.domElement.addEventListener( 'mouseup', bind( this, this.onMouseUp ), false );
          this.domElement.addEventListener( 'keydown', bind( this, this.onKeyDown ), false );
          this.domElement.addEventListener( 'keyup', bind( this, this.onKeyUp ), false );
  
          function bind( scope, fn ) {
  
                  return function () {
  
                          fn.apply( scope, arguments );
  
                  };
  
          };
  
          this.handleResize();
  
  };
  


(C) Æliens 04/09/2009

You may not copy or print any of this material without explicit permission of the author or the publisher. In case of other copyright issues, contact the author.