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