topical media & game development

topical media & game development

[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

graphic-o3d-samples-io-cutscenes.js / js


  /*
   * Copyright 2009, Google Inc.
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are
   * met:
   *
   *     * Redistributions of source code must retain the above copyright
   * notice, this list of conditions and the following disclaimer.
   *     * Redistributions in binary form must reproduce the above
   * copyright notice, this list of conditions and the following disclaimer
   * in the documentation and/or other materials provided with the
   * distribution.
   *     * Neither the name of Google Inc. nor the names of its
   * contributors may be used to endorse or promote products derived from
   * this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */

@fileoverview This file isn't important to the actual game. It just runs pretty animations outside the o3d window.

"Opens" the cover. This thing calls itself again and again until it's done.
parameter: {number} lastPercent Number from 0 to 100 representing how "done"


  
  function animateCover(lastPercent) {
    // Move 10% more toward a 100% animation
    lastPercent = ifEmpty(lastPercent,0);
    lastPercent = lastPercent + 10;
  
    // Play a nice sound.
    if (lastPercent == 10) {
      soundPlayer.play('sound/page.mp3', 100);
      $('innercover-div').style.width = $('book-left').offsetWidth;
      $('book-left').style.width = $('book-left').offsetWidth;
    }
  
    // Transform the cover graphic from "closed" to "open." If we're more than
    // 50% along the way, then this cover gets hidden.
    var cover = $('cover')
    var innerCover = $('innercover')
  
    var factor = Math.abs(Math.cos(lastPercent/50*Math.PI/2));
    if (lastPercent < 50){
      cover.style.width = factor * 1000;
      cover.style.height = 600;
    } else {
      cover.visibility = 'hidden';
      cover.style.width = 1;
      innerCover.style.width = factor * 1000;
      innerCover.style.height = 600;
    }
  
    var shadow = $('cover-shadow');
    if (lastPercent <= 70) {
      factor = Math.abs(Math.cos(lastPercent/70*Math.PI/2));
      shadow.style.width = factor * 1000;
      shadow.style.height = 600;
      shadow.style.opacity = (70 - lastPercent)/70;
    }
  
    if (lastPercent < 100) {
      setTimeout('animateCover(' + lastPercent + ')',100);
    } else {
      shadow.style.visibility = 'hidden';
    }
  }

"Opens" a page. This thing calls itself again and again until it's done.
parameter: {string} id HTML element ID of the page image that we're animating.
parameter: {number} lastPercent Number from 0 to 100 representing how "done"


  
  function animatePage(id, lastPercent) {
    // Transform the page graphic from "closed" to "open." If we're more than
    // 50% along the way, then this cover gets hidden.
    var page = id
    page.style.zIndex = 200;
    lastPercent = ifEmpty(lastPercent,0);
  
    // if we've already animated this page... don't do it again.
    if (parseInt(page.style.width) < 900 && lastPercent == 0) {
      return;
    }
  
    // Move 10% more toward a 100% animation
    lastPercent = lastPercent + 10;
  
    // Play a nice sound.
    if (lastPercent == 10) {
      soundPlayer.play('sound/page.mp3', 100);
    }
  
    var factor = Math.abs(Math.cos(lastPercent/50*Math.PI/2));
    if (lastPercent < 50) {
      page.style.width = factor * 951;
      page.style.height = 549;
    } else {
      page.visibility = 'hidden';
      page.style.width = 1;
    }
  
    var shadow = $('cover-shadow')
    var coverDiv = $('cover-div')
  
    if (lastPercent <= 70){
      coverDiv.style.zIndex = 99;
      factor = Math.abs(Math.cos(lastPercent/70*Math.PI/2));
      shadow.style.width = factor * 1000;
      shadow.style.height = 600;
      shadow.style.opacity = (70 - lastPercent)/70;
      shadow.style.visibility = 'visible';
    }
  
    // Fade in a bit for the start of the animated shadow.
    if (lastPercent <= 20) {
      shadow.style.opacity = (lastPercent/30);
    }
  
    if (lastPercent < 100) {
      setTimeout('animatePage("' + id + '",' + lastPercent + ')',100);
    } else {
      shadow.style.visibility = 'hidden';
      if (id == "page2") {
        // We'll fire the animation of page 3 after 2 seconds.
        setTimeout('animatePage("page3")',2000);
      } else if (id == "page3") {
        loadLevel(0);
      }
    }
  }

[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

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.