1 files changed, 40 insertions, 0 deletions
diff --git a/Client/ThirdParty/Box2D/src/dynamics/b2_world_callbacks.cpp b/Client/ThirdParty/Box2D/src/dynamics/b2_world_callbacks.cpp
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+++ b/Client/ThirdParty/Box2D/src/dynamics/b2_world_callbacks.cpp
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+// MIT License
+
+// Copyright (c) 2019 Erin Catto
+
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+#include "box2d/b2_fixture.h"
+#include "box2d/b2_world_callbacks.h"
+
+// Return true if contact calculations should be performed between these two shapes.
+// If you implement your own collision filter you may want to build from this implementation.
+bool b2ContactFilter::ShouldCollide(b2Fixture* fixtureA, b2Fixture* fixtureB)
+{
+	const b2Filter& filterA = fixtureA->GetFilterData();
+	const b2Filter& filterB = fixtureB->GetFilterData();
+
+	if (filterA.groupIndex == filterB.groupIndex && filterA.groupIndex != 0)
+	{
+		return filterA.groupIndex > 0;
+	}
+
+	bool collide = (filterA.maskBits & filterB.categoryBits) != 0 && (filterA.categoryBits & filterB.maskBits) != 0;
+	return collide;
+}