1// Copyright 2013 the V8 project authors. All rights reserved.
2// Redistribution and use in source and binary forms, with or without
3// modification, are permitted provided that the following conditions are
4// met:
5//
6//     * Redistributions of source code must retain the above copyright
7//       notice, this list of conditions and the following disclaimer.
8//     * Redistributions in binary form must reproduce the above
9//       copyright notice, this list of conditions and the following
10//       disclaimer in the documentation and/or other materials provided
11//       with the distribution.
12//     * Neither the name of Google Inc. nor the names of its
13//       contributors may be used to endorse or promote products derived
14//       from this software without specific prior written permission.
15//
16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
28// Flags: --allow-natives-syntax
29
30var gdpRatio = 16/9;
31
32function Foo(initialX, initialY, initialScale, initialMapHeight) {
33  this.ORIGIN = { x: initialX, y: initialY };
34  this.scale = initialScale;
35  this.mapHeight = initialMapHeight;
36}
37
38Foo.prototype.bar = function (x, y, xOffset, yOffset) {
39  var tileHeight =  64 * 0.25 * this.scale,
40  tileWidth  = 128 * 0.25 * this.scale,
41  xOffset    = xOffset * 0.5 || 0,
42  yOffset    = yOffset * 0.5 || 0;
43  var xPos = ((xOffset) * gdpRatio) + this.ORIGIN.x * this.scale -
44      ((y * tileWidth ) * gdpRatio) + ((x * tileWidth ) * gdpRatio);
45  var yPos = ((yOffset) * gdpRatio) + this.ORIGIN.y * this.scale +
46      ((y * tileHeight) * gdpRatio) + ((x * tileHeight) * gdpRatio);
47  xPos = xPos - Math.round(((tileWidth) * gdpRatio)) +
48      this.mapHeight * Math.round(((tileWidth) * gdpRatio));
49  return {
50      x: Math.floor(xPos),
51      y: Math.floor(yPos)
52  };
53}
54
55var f = new Foo(10, 20, 2.5, 400);
56
57function baz() {
58  var b = f.bar(1.1, 2.2, 3.3, 4.4);
59  assertEquals(56529, b.x);
60  assertEquals(288, b.y);
61}
62
63baz();
64baz();
65%OptimizeFunctionOnNextCall(Foo.prototype.bar);
66baz();
67