From 44776f7abad3834ee43a5f7003064d7af12550b5 Mon Sep 17 00:00:00 2001
From: Foxar <mostek3pl@gmail.com>
Date: Sun, 20 Dec 2020 13:13:03 +0100
Subject: [PATCH] Added: Incomplete implenetation of BoundingBox class and
 BoundingBoxFace struct.

---
 src/engine/include/models/bounding_box.hpp | 69 ++++++++++++++++++++++
 src/engine/models/bounding_box.cpp         | 33 +++++++++++
 2 files changed, 102 insertions(+)
 create mode 100644 src/engine/include/models/bounding_box.hpp
 create mode 100644 src/engine/models/bounding_box.cpp

diff --git a/src/engine/include/models/bounding_box.hpp b/src/engine/include/models/bounding_box.hpp
new file mode 100644
index 0000000..98a9128
--- /dev/null
+++ b/src/engine/include/models/bounding_box.hpp
@@ -0,0 +1,69 @@
+/*
+# ______       ____   ___
+#   |     \/   ____| |___|    
+#   |     |   |   \  |   |       
+#-----------------------------------------------------------------------
+# Copyright 2020, tyra - https://github.com/h4570/tyra
+# Licenced under Apache License 2.0
+# Michał Mostowik <mostek3pl@gmail.com>
+*/
+
+#ifndef _TYRA_BOUNDING_BOX_
+#define _TYRA_BOUNDING_BOX_
+
+#include <stddef.h>
+#include <tamtypes.h>
+#include "math/point.hpp"
+#include "math/vector3.hpp"
+
+/**
+ * Struct containing face data used in
+ * bounding box class.
+ */
+struct BoundingBoxFace
+{
+    BoundingBoxFace(Vector3 t_minCorner, Vector3 t_maxCorner, float t_axisPos)
+    {
+        minCorner = t_minCorner;
+        maxCorner = t_maxCorner;
+        axisPosition = t_axisPos;
+    }
+    /** Position of the face on it's respective axis. */
+    float axisPosition;
+    /** Corner of the face with lower coordinates */
+    Vector3 minCorner;
+    /** Corner of the face with higher coordinates */
+    Vector3 maxCorner;
+};
+
+/**
+ * Class containing bounding box data
+ * which can be used for collision detection.
+ */
+
+class BoundingBox
+{
+public:
+    BoundingBox(Vector3 *t_vertices);
+    ~BoundingBox();
+    const float &getHeight() { return _height; };
+    const float &getDepth() { return _depth; };
+    const float &getWidth() { return _width; };
+    /** Return the vector directly in middle of the bounding box. */
+    const Vector3 &getCenter() { return _centerVector; };
+    /** Return the front face (furhter on z-axis) */
+    const BoundingBoxFace &getFrontFace() { return _frontFace; };
+
+private:
+    Vector3 _vertices[8];
+    float _height, _depth, _width;
+    Vector3 _centerVector;
+    BoundingBoxFace _frontFace;
+    BoundingBoxFace _backFace;
+    BoundingBoxFace _leftFace;
+    BoundingBoxFace _rightFace;
+    BoundingBoxFace _topFace;
+    BoundingBoxFace _bottomFace;
+};
+
+#endif
\ No newline at end of file
diff --git a/src/engine/models/bounding_box.cpp b/src/engine/models/bounding_box.cpp
new file mode 100644
index 0000000..e16f04e
--- /dev/null
+++ b/src/engine/models/bounding_box.cpp
@@ -0,0 +1,33 @@
+/*
+# ______       ____   ___
+#   |     \/   ____| |___|    
+#   |     |   |   \  |   |       
+#-----------------------------------------------------------------------
+# Copyright 2020, tyra - https://github.com/h4570/tyra
+# Licenced under Apache License 2.0
+# Michał Mostowik <mostek3pl@gmail.com>
+*/
+
+#include "../include/models/bounding_box.hpp"
+#include "../include/utils/debug.hpp"
+
+BoundingBox::BoundingBox(Vector3 *t_vectorArray)
+{
+    if (sizeof(t_vectorArray) / sizeof(Vector3) != 8)
+        PRINT_ERR("Attempted to create bounding box with invalid count of vectors!");
+
+    //Perform a deep copy of vertex array parameter
+    for (int i = 0; i < 9; i++)
+        _vertices[i] = t_vectorArray[i];
+
+    //This might be shortened with Vector3 operator overloading, but current
+    //implementation is more human readable.
+    _height = _vertices[0].y - _vertices[2].y;
+    _width = _vertices[0].x - _vertices[4].x;
+    _depth = _vertices[0].z - _vertices[1].z;
+
+    _centerVector = _vertices[0];
+    _centerVector.x += (_width / 2);
+    _centerVector.y += (_height / 2);
+    _centerVector.z += (_depth / 2);
+}
\ No newline at end of file