Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 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 | |
| 30 | var gdpRatio = 16/9; |
| 31 | |
| 32 | function Foo(initialX, initialY, initialScale, initialMapHeight) { |
| 33 | this.ORIGIN = { x: initialX, y: initialY }; |
| 34 | this.scale = initialScale; |
| 35 | this.mapHeight = initialMapHeight; |
| 36 | } |
| 37 | |
| 38 | Foo.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 | |
| 55 | var f = new Foo(10, 20, 2.5, 400); |
| 56 | |
| 57 | function 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 | |
| 63 | baz(); |
| 64 | baz(); |
| 65 | %OptimizeFunctionOnNextCall(Foo.prototype.bar); |
| 66 | baz(); |