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+/*  Starshatter OpenSource Distribution
+    Copyright (c) 1997-2004, Destroyer Studios LLC.
+    All Rights Reserved.
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright notice,
+      this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright notice,
+      this list of conditions and the following disclaimer in the documentation
+      and/or other materials provided with the distribution.
+    * Neither the name "Destroyer Studios" nor the names of its contributors
+      may be used to endorse or promote products derived from this software
+      without specific prior written permission.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+    AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+    ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+    POSSIBILITY OF SUCH DAMAGE.
+
+    SUBSYSTEM:    Stars.exe
+    FILE:         Drive.h
+    AUTHOR:       John DiCamillo
+
+
+    OVERVIEW
+    ========
+    Conventional Drive (system) class
+*/
+
+#ifndef Drive_h
+#define Drive_h
+
+#include "Types.h"
+#include "System.h"
+#include "Geometry.h"
+
+// +--------------------------------------------------------------------+
+
+class Bolt;
+class DriveSprite;
+class Light;
+class Sound;
+class Ship;
+
+// +--------------------------------------------------------------------+
+
+struct DrivePort {
+    static const char* TYPENAME() { return "DrivePort"; }
+
+    DrivePort(const Point& l, float s);
+    ~DrivePort();
+
+    Point          loc;
+    float          scale;
+
+    DriveSprite*   flare;
+    Bolt*          trail;
+};
+
+// +--------------------------------------------------------------------+
+
+class Drive : public System
+{
+public:
+    enum SUBTYPE   { PLASMA, FUSION, GREEN, RED, BLUE, YELLOW, STEALTH };
+    enum Constants { MAX_ENGINES=16 };
+
+    Drive(SUBTYPE s, float max_thrust, float max_aug, bool show_trail=true);
+    Drive(const Drive& rhs);
+    virtual ~Drive();
+
+    static void       Initialize();
+    static void       Close();
+    static void       StartFrame();
+
+    float             Thrust(double seconds);
+    float             MaxThrust()          const { return thrust;        }
+    float             MaxAugmenter()       const { return augmenter;     }
+    int               NumEngines()         const;
+    DriveSprite*      GetFlare(int port)   const;
+    Bolt*             GetTrail(int port)   const;
+    bool              IsAugmenterOn()      const;
+
+    virtual void      AddPort(const Point& loc, float flare_scale=0);
+    virtual void      CreatePort(const Point& loc, float flare_scale);
+
+    virtual void      Orient(const Physical* rep);
+
+    void              SetThrottle(double t, bool aug=false);
+    virtual double    GetRequest(double seconds) const;
+
+protected:
+    float             thrust;
+    float             augmenter;
+    float             scale;
+    float             throttle;
+    float             augmenter_throttle;
+    float             intensity;
+
+    List<DrivePort>   ports;
+
+    Sound*            sound;
+    Sound*            burner_sound;
+    bool              show_trail;
+};
+
+#endif Drive_h
+