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App/v8world/BlockCorners.h

@@ -0,0 +1,41 @@
+#pragma once
+
+#include "Util/Memory.h"
+
+
+/*
+	Utility class - holds Vector3 [8] so that all blocks of the same size use the same geometry to improve cache / ram size for collisions
+*/
+
+namespace RBX {
+
+	namespace POLY {
+
+		class BlockCorners : public Allocator<BlockCorners>
+		{
+		private:
+			Vector3 vertices[8];
+		public:
+			BlockCorners(const Vector3& _corner) 
+			{
+				Vector3 corner;
+				corner.x = - std::abs(_corner.x);
+				corner.y = - std::abs(_corner.y);
+				corner.z = - std::abs(_corner.z);
+
+				for (int i = 0; i < 2; i++) {
+					corner.x *= -1.0;						// positive for i = 0, negative for i = -1
+					for (int j = 0; j < 2; j++) {			
+						corner.y *= -1.0;					// positive for j = 0...
+						for (int k = 0; k < 2; k++) {
+							corner.z *= -1.0;				
+							vertices[i*4 + j*2 + k] = corner;
+						}
+					}
+				}
+			}
+			const Vector3* getVertices() const {return vertices;}
+		};
+
+	} // namespace POLY
+} // namespace RBX