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diff --git a/Stars45/Shield.h b/Stars45/Shield.h
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+/*  Project Starshatter 4.5
+    Destroyer Studios LLC
+    Copyright © 1997-2004. All Rights Reserved.
+
+    SUBSYSTEM:    Stars.exe
+    FILE:         Shield.h
+    AUTHOR:       John DiCamillo
+
+
+    OVERVIEW
+    ========
+    Conventional Shield (system) class
+*/
+
+#ifndef Shield_h
+#define Shield_h
+
+#include "Types.h"
+#include "System.h"
+#include "Geometry.h"
+
+// +--------------------------------------------------------------------+
+
+class Shot;
+class Sound;
+
+// +--------------------------------------------------------------------+
+
+class Shield : public System
+{
+public:
+   enum SUBTYPE { DEFLECTOR = 1, GRAV_SHIELD, HYPER_SHIELD };
+
+   Shield(SUBTYPE s);
+   Shield(const Shield& rhs);
+   virtual ~Shield();
+
+   virtual void   ExecFrame(double seconds);
+   double         DeflectDamage(Shot* shot, double shot_damage);
+
+   double         ShieldLevel()              const { return shield_level * 100;     }
+   double         ShieldFactor()             const { return shield_factor;          }
+   double         ShieldCurve()              const { return shield_curve;           }
+   void           SetShieldFactor(double f)        { shield_factor = (float) f;     }
+   void           SetShieldCurve(double c)         { shield_curve  = (float) c;     }
+   double         ShieldCutoff()             const { return shield_cutoff;          }
+   void           SetShieldCutoff(double f)        { shield_cutoff = (float) f;     }
+   double         Capacity()                 const { return capacity;               }
+   double         Consumption()              const { return sink_rate;              }
+   void           SetConsumption(double r)         { sink_rate = (float)r;          }
+   bool           ShieldCapacitor()          const { return shield_capacitor;       }
+   void           SetShieldCapacitor(bool c);
+   bool           ShieldBubble()             const { return shield_bubble;          }
+   void           SetShieldBubble(bool b)          { shield_bubble = b;             }
+   double         DeflectionCost()           const { return deflection_cost;        }
+   void           SetDeflectionCost(double c)      { deflection_cost = (float) c;   }
+
+   // override from System:
+   virtual void   SetPowerLevel(double level);
+   virtual void   SetNetShieldLevel(int level);
+
+   virtual void   Distribute(double delivered_energy, double seconds);
+   virtual void   DoEMCON(int emcon);
+
+protected:
+   bool           shield_capacitor;
+   bool           shield_bubble;
+   float          shield_factor;
+   float          shield_level;
+   float          shield_curve;
+   float          shield_cutoff;
+   float          requested_power_level;
+   float          deflection_cost;
+};
+
+#endif Shield_h
+