[ADDED] simple collision logic for entities

src/entities/collision_entity.h

@@ -0,0 +1,58 @@
+#pragma once
+
+#include "entity.h"
+#include "../collision/collision.h"
+
+namespace entities
+{
+	/*
+	 * This class is an entity with a collision box
+	 */
+	class CollisionEntity : public Entity
+	{
+	private:
+		collision::Box bounding_box;
+
+		glm::vec3 min_xyz;
+		glm::vec3 max_xyz;
+
+		void (*on_collide)(const collision::Collision& collision);
+
+	public:
+		CollisionEntity(const models::TexturedModel& model, const glm::vec3& position, const glm::vec3& rotation,
+			float scale, const collision::Box& bounding_box);
+
+		/*
+		 * @brief: A function to do some sort of behaviour when the entity collides
+		 *
+		 * @param collision: The collision
+		 */
+		virtual void OnCollide(const collision::Collision& collision);
+
+		/*
+		 * @brief: A function to check if the entity is colliding with a point in 3D space
+		 *
+		 * @param point: The point to check if its colliding with the entity
+		 *
+		 * @return: True is the entity is colliding, false if not
+		 */
+		bool IsColliding(const glm::vec3& point) const;
+
+		/*
+		 * @brief: A function to check if the entity is colliding with another entity
+		 *
+		 * @param e: The other entity to check if its colliding with this
+		 *
+		 * @return: True is the entity is colliding, false if not
+		 */
+		bool IsColliding(const CollisionEntity& e) const;
+
+		/*
+		 * @brief: A function to set the collision behaviour of the entity
+		 *
+		 * @param function: A function pointer to a function with the collision behaviour
+		 */
+		void SetCollisionBehaviour(void (*function)(const collision::Collision& collision))
+		{ if (function != nullptr) { on_collide = function; } }
+	};
+}