overte-thingvellir/script-archive/lineRider.js

//
//  lineRider.js
//  examples
//
//  Created by Eric Levin on 6/4/15.
//  Copyright 2014 High Fidelity, Inc.
//
//  Takes the avatar on a line ride. Meant to be used in conjunction with paint.js
//  Paint a line and then click on roller coaster icon to start!
//
//  Distributed under the Apache License, Version 2.0.
//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
LineRider = function() {
  var screenSize = Controller.getViewportDimensions();

  var BUTTON_SIZE = 32;
  var PADDING = 3;

  this.buttonOffColor = {
    red: 250,
    green: 10,
    blue: 10
  };
  this.buttonOnColor = {
    red: 10,
    green: 200,
    blue: 100
  };
  this.riding = false;

  this.startButton = Overlays.addOverlay("image", {
    x: screenSize.x / 2 - BUTTON_SIZE + PADDING * 2,
    y: screenSize.y - (BUTTON_SIZE + PADDING),
    width: BUTTON_SIZE,
    height: BUTTON_SIZE,
    imageURL: Script.getExternalPath(Script.ExternalPaths.Assets, "images/coaster.png?v2"),
    color: this.buttonOffColor,
    alpha: 1
  });

  this.currentPoint = 0;
  this.shouldUpdate = false;
  this.moveIntervalTime = 50;

}


LineRider.prototype.move = function() {
  if (!this.shouldMove) {
    return;
  }
  MyAvatar.position = this.points[this.currentPoint++];

  if (this.currentPoint === this.points.length) {
    this.currentPoint = 0;
  }
  var self = this;
  Script.setTimeout(function() {
    self.move();
  }, this.moveIntervalTime);
}

LineRider.prototype.setPath = function(points) {
  this.points = points;
}

LineRider.prototype.addStartHandler = function(callback) {
  this.onStart = callback;
}


LineRider.prototype.mousePressEvent = function(event) {
  var clickedOverlay = Overlays.getOverlayAtPoint({
    x: event.x,
    y: event.y
  });
  if (clickedOverlay == this.startButton) {
    this.toggleRide();

  }

}

LineRider.prototype.toggleRide = function() {
  this.riding = !this.riding;
  if (this.riding === true) {
    Overlays.editOverlay(this.startButton, {
      color: this.buttonOnColor
    });
    if (this.onStart) {
      this.onStart();
      //make sure we actually have a path
      if (this.points.length > 2) {
        this.shouldMove = true;
      }
      var self = this;
      Script.setTimeout(function() {
        self.move();
      }, this.moveIntervalTime);
    }
  } else {
    Overlays.editOverlay(this.startButton, {
      color: this.buttonOffColor
    })
    this.shouldMove = false;
  }

}
LineRider.prototype.startRide = function() {
  this.shouldUpdate = true;

}

LineRider.prototype.cleanup = function() {
  Overlays.deleteOverlay(this.startButton);
}