33 lines
990 B
Markdown
33 lines
990 B
Markdown
---
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title: "Sweep Test"
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date: 2020-07-18T12:37:29-07:00
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weight: 25
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---
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Sweep testing is an efficient way to check collision positions on moving objects.
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At the moment, Bonk only implements sweep testing on Rectangles.
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Example:
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```cs
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var rectangle = new Rectangle(-2, -2, 4, 4);
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var transform = new Transform2D(new Position2D(-6, 0));
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var otherRectangle = new Rectangle(-2, -2, 4, 4);
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var otherTransform = new Transform2D(new Position2D(6, 0));
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var farthestRectangle = new Rectangle(-2, -2, 4, 4);
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var farthestTransform = new Transform2D(new Position2D(12, 0));
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var downRectangle = new Rectangle(-6, -2, 12, 4);
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var downTransform = new Transform2D(new Position2D(-6, 20));
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var spatialHash = new SpatialHash<int>(16);
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spatialHash.Insert(1, otherRectangle, otherTransform);
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spatialHash.Insert(2, farthestRectangle, farthestTransform);
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spatialHash.Insert(3, downRectangle, downTransform);
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var result = SweepTest.Test(spatialHash, rectangle, transform, new Vector2(12, 0)); // hits
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```
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