WIP:

- Updated names to allign with the BSP naming structure
- Updated constants file and assoicated uses

src/ObjLoading/Game/T6/CustomMap/BSPCalculation.h

@@ -0,0 +1,75 @@
+#pragma once
+
+#include <memory>
+#include <vector>
+
+#include "Game/T6/T6.h"
+using namespace T6;
+
+constexpr int MAX_NODE_SIZE = 512; // maximum size a BSP node can be before it becomes a leaf
+
+enum PlaneAxis
+{
+    AXIS_X,
+    AXIS_Y,
+    AXIS_Z
+};
+
+enum PlaneSide
+{
+    SIDE_FRONT,
+    SIDE_BACK,
+    SIDE_INTERSECTS
+};
+
+class BSPObject
+{
+public:
+    vec3_t min;
+    vec3_t max;
+    int partitionIndex; // index of the partition the object is contained in
+
+    BSPObject(float xMin, float yMin, float zMin, float xMax, float yMax, float zMax, int objPartitionIndex);
+};
+
+
+class BSPLeaf
+{
+public:
+    std::vector<std::shared_ptr<BSPObject>> objectList;
+
+    void addObject(std::shared_ptr<BSPObject> object);
+    BSPObject* getObject(int index);
+    int getObjectCount();
+};
+
+class BSPTree;
+
+class BSPNode
+{
+public:
+    std::unique_ptr<BSPTree> front;
+    std::unique_ptr<BSPTree> back;
+
+    PlaneAxis axis;  // axis that the split plane is on
+    float distance; // distance from the origin (0, 0, 0) to the plane
+
+    BSPNode(std::unique_ptr<BSPTree> frontTree, std::unique_ptr<BSPTree> backTree, PlaneAxis nodeAxis, float nodeDistance);
+    PlaneSide objectIsInfront(BSPObject* object);
+};
+
+class BSPTree
+{
+public:
+    bool isLeaf;
+    std::unique_ptr<BSPLeaf> leaf;
+    std::unique_ptr<BSPNode> node;
+
+    int level; // level in the BSP tree
+    vec3_t min;
+    vec3_t max;
+
+    BSPTree(float xMin, float yMin, float zMin, float xMax, float yMax, float zMax, int treeLevel);
+    void splitTree();
+    void addObjectToTree(std::shared_ptr<BSPObject> object);
+};