implemented CDoor

src/vehicles/Door.h

@@ -0,0 +1,36 @@
+#pragma once
+
+class CVehicle;
+
+enum eDoorState
+{
+	DOORST_SWINGING,
+	// actually wrong though,
+	// OPEN is really MAX_ANGLE and CLOSED is MIN_ANGLE
+	DOORST_OPEN,
+	DOORST_CLOSED
+};
+
+struct CDoor
+{
+	float m_fMaxAngle;
+	float m_fMinAngle;
+	// direction of rotation for air resistance
+	int8 m_nDirn;
+	// axis in which this door rotates
+	int8 m_nAxis;
+	int8 m_nDoorState;
+	float m_fAngle;
+	float m_fPrevAngle;
+	float m_fAngVel;
+	CVector m_vecSpeed;
+
+	CDoor(void);
+	void Open(float ratio);
+	void Process(CVehicle *veh);
+	float RetAngleWhenClosed(void);
+	float RetAngleWhenOpen(void);
+	float GetAngleOpenRatio(void);
+	bool IsFullyOpen(void);
+	bool IsClosed(void);
+};