Possessor and possessable additions (#619)

* possessor-fixup and possessable additions

* comment and docstring fixes

* fix possessable initialization

* split animation flags into it's own header
remove unnecessary checks

dGame/dComponents/PossessorComponent.h

@@ -4,6 +4,14 @@
 #include "Entity.h"
 #include "Component.h"
 
+// possession types
+enum class ePossessionType : uint8_t {
+	NO_POSSESSION = 0,
+	ATTACHED_VISIBLE,
+	NOT_ATTACHED_VISIBLE,
+	NOT_ATTACHED_NOT_VISIBLE,
+};
+
 /**
  * Represents an entity that can posess other entities. Generally used by players to drive a car.
  */
@@ -22,34 +30,34 @@ class PossessorComponent : public Component {
 		 */
 		void SetPossessable(LWOOBJID value) { m_Possessable = value; m_DirtyPossesor = true; }
 
-		/**
-		 * Sets the possesible type that's currently used, merely used by the shooting gallery if it's 0
-		 * @param value the possesible type to set
-		 */
-		void SetPossessableType(uint8_t value) { m_PossessableType = value; m_DirtyPossesor = true; }
-
 		/**
 		 * Returns the entity that this entity is currently posessing
 		 * @return the entity that this entity is currently posessing
 		 */
 		LWOOBJID GetPossessable() const { return m_Possessable; }
 
+		/**
+		 * Sets the possesible type that's currently used, merely used by the shooting gallery if it's 0
+		 * @param value the possesible type to set
+		 */
+		void SetPossessableType(ePossessionType value) { m_PossessableType = value; m_DirtyPossesor = true; }
+
 	private:
 
 		/**
 		 * The ID of the entity this entity is possessing (e.g. the ID of a car)
 		 */
-		LWOOBJID m_Possessable;
+		LWOOBJID m_Possessable = LWOOBJID_EMPTY;
 
 		/**
 		 * @brief possessable type
 		 *
 		 */
-		uint8_t m_PossessableType;
+		ePossessionType m_PossessableType = ePossessionType::NO_POSSESSION;
 
 		/**
 		 * @brief if the possessor is dirty
 		 *
 		 */
-		bool m_DirtyPossesor;
+		bool m_DirtyPossesor = false;
 };