1 files changed, 113 insertions, 0 deletions
diff --git a/Stars45/NavSystem.cpp b/Stars45/NavSystem.cpp
new file mode 100644
index 0000000..c0a620c
--- /dev/null
+++ b/Stars45/NavSystem.cpp
@@ -0,0 +1,113 @@
+/*  Project Starshatter 5.0
+    Destroyer Studios LLC
+    Copyright © 1997-2007. All Rights Reserved.
+
+    SUBSYSTEM:    Stars.exe
+    FILE:         NavSystem.cpp
+    AUTHOR:       John DiCamillo
+
+
+    OVERVIEW
+    ========
+    Navigation System class implementation
+*/
+
+#include "MemDebug.h"
+#include "NavSystem.h"
+#include "Ship.h"
+#include "Sim.h"
+#include "HUDSounds.h"
+#include "Button.h"
+#include "Game.h"
+
+// +----------------------------------------------------------------------+
+
+NavSystem::NavSystem()
+   : System(COMPUTER, 2, "Auto Nav System", 1, 1,1,1),
+     autonav(0)
+{
+   name = Game::GetText("sys.nav-system");
+   abrv = Game::GetText("sys.nav-system.abrv");
+
+   power_flags = POWER_WATTS | POWER_CRITICAL;
+}
+
+// +----------------------------------------------------------------------+
+
+NavSystem::NavSystem(const NavSystem& s)
+   : System(s), autonav(0)
+{
+   Mount(s);
+
+   power_flags = POWER_WATTS | POWER_CRITICAL;
+}
+
+// +--------------------------------------------------------------------+
+
+NavSystem::~NavSystem()
+{ }
+
+// +--------------------------------------------------------------------+
+
+void
+NavSystem::ExecFrame(double seconds)
+{
+   if (autonav && ship && !ship->GetNextNavPoint())
+      autonav = false;
+
+   energy = 0.0f;
+   System::ExecFrame(seconds);
+}
+
+// +----------------------------------------------------------------------+
+
+bool
+NavSystem::AutoNavEngaged()
+{
+   return ship && autonav && IsPowerOn();
+}
+
+void
+NavSystem::EngageAutoNav()
+{
+   if (IsPowerOn() && !autonav) {
+      if (!ship->GetNextNavPoint()) {
+         Button::PlaySound(Button::SND_REJECT);
+      }
+      else {
+         HUDSounds::PlaySound(HUDSounds::SND_NAV_MODE);
+         autonav = true;
+      }
+   }
+}
+
+void
+NavSystem::DisengageAutoNav()
+{
+   if (autonav)
+      HUDSounds::PlaySound(HUDSounds::SND_NAV_MODE);
+
+   autonav = false;
+}
+
+// +--------------------------------------------------------------------+
+
+void
+NavSystem::Distribute(double delivered_energy, double seconds)
+{
+   if (IsPowerOn()) {
+      // convert Joules to Watts:
+      energy = (float) (delivered_energy/seconds);
+
+      // brown out:
+      if (energy < capacity*0.75f)
+         power_on = false;
+
+      // spike:
+      else if (energy > capacity*1.5f) {
+         power_on = false;
+         ApplyDamage(50);
+      }
+   }
+}
+