67 lines
2.7 KiB
JavaScript
67 lines
2.7 KiB
JavaScript
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// Copyright 2013 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Flags: --allow-natives-syntax
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var gdpRatio = 16/9;
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function Foo(initialX, initialY, initialScale, initialMapHeight) {
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this.ORIGIN = { x: initialX, y: initialY };
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this.scale = initialScale;
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this.mapHeight = initialMapHeight;
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}
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Foo.prototype.bar = function (x, y, xOffset, yOffset) {
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var tileHeight = 64 * 0.25 * this.scale,
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tileWidth = 128 * 0.25 * this.scale,
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xOffset = xOffset * 0.5 || 0,
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yOffset = yOffset * 0.5 || 0;
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var xPos = ((xOffset) * gdpRatio) + this.ORIGIN.x * this.scale -
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((y * tileWidth ) * gdpRatio) + ((x * tileWidth ) * gdpRatio);
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var yPos = ((yOffset) * gdpRatio) + this.ORIGIN.y * this.scale +
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((y * tileHeight) * gdpRatio) + ((x * tileHeight) * gdpRatio);
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xPos = xPos - Math.round(((tileWidth) * gdpRatio)) +
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this.mapHeight * Math.round(((tileWidth) * gdpRatio));
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return {
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x: Math.floor(xPos),
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y: Math.floor(yPos)
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};
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}
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var f = new Foo(10, 20, 2.5, 400);
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function baz() {
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var b = f.bar(1.1, 2.2, 3.3, 4.4);
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assertEquals(56529, b.x);
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assertEquals(288, b.y);
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}
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baz();
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baz();
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%OptimizeFunctionOnNextCall(Foo.prototype.bar);
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baz();
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