From e33e19d0587146859d48a134ec9fd94e7b7ba5cd Mon Sep 17 00:00:00 2001
From: "FWoltermann@gmail.com"
 <FWoltermann@gmail.com@076cb2c4-205e-83fd-5cf3-1be9aa105544>
Date: Thu, 8 Dec 2011 14:53:40 +0000
Subject: Initial upload

---
 Stars45/DropShipAI.cpp | 122 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 122 insertions(+)
 create mode 100644 Stars45/DropShipAI.cpp

(limited to 'Stars45/DropShipAI.cpp')

diff --git a/Stars45/DropShipAI.cpp b/Stars45/DropShipAI.cpp
new file mode 100644
index 0000000..41672cc
--- /dev/null
+++ b/Stars45/DropShipAI.cpp
@@ -0,0 +1,122 @@
+/*  Project Starshatter 4.5
+    Destroyer Studios LLC
+    Copyright © 1997-2004. All Rights Reserved.
+
+    SUBSYSTEM:    Stars.exe
+    FILE:         DropShipAI.cpp
+    AUTHOR:       John DiCamillo
+
+
+    OVERVIEW
+    ========
+    Drop Ship (orbit/surface and surface/orbit) AI class
+*/
+
+#include "MemDebug.h"
+#include "DropShipAI.h"
+#include "TacticalAI.h"
+#include "Ship.h"
+#include "ShipCtrl.h"
+#include "Drive.h"
+#include "Sim.h"
+#include "StarSystem.h"
+#include "KeyMap.h"
+
+#include "Game.h"
+
+// +----------------------------------------------------------------------+
+
+DropShipAI::DropShipAI(Ship* s)
+   : ShipAI(s)
+{
+   seek_gain = 20;
+   seek_damp = 0.5;
+
+   delete tactical;
+   tactical = 0;
+}
+
+DropShipAI::~DropShipAI()
+{
+}
+
+// +--------------------------------------------------------------------+
+
+void
+DropShipAI::FindObjective()
+{
+   distance = 0;
+
+   if (!ship)  return;
+
+   Sim*        sim = Sim::GetSim();
+   SimRegion*  self_rgn = ship->GetRegion();
+
+   // if making orbit, go up:
+   if (self_rgn->Type() == Sim::AIR_SPACE) {
+      obj_w = self->Location() + Point(0, 1e3, 0);
+   }
+
+   // if breaking orbit, head for terrain region:
+   else {
+      SimRegion* dst_rgn = sim->FindNearestTerrainRegion(ship);
+      Point      dst     = dst_rgn->GetOrbitalRegion()->Location() -
+                           self_rgn->GetOrbitalRegion()->Location() +
+                           Point(0, 0, -1e6);
+      
+      obj_w =    dst.OtherHand();
+   }
+
+   // distance from self to navpt:
+   distance = Point(obj_w - self->Location()).length();
+   
+   // transform into camera coords:
+   objective = Transform(obj_w);
+   objective.Normalize();
+}
+
+// +--------------------------------------------------------------------+
+
+void
+DropShipAI::Navigator()
+{
+   accumulator.Clear();
+   magnitude = 0;
+
+   if (other)
+      ship->SetFLCSMode(Ship::FLCS_AUTO);
+   else
+      ship->SetFLCSMode(Ship::FLCS_MANUAL);
+
+   Accumulate(AvoidCollision());
+   Accumulate(Seek(objective));
+
+   // are we being asked to flee?
+   if (fabs(accumulator.yaw) == 1.0 && accumulator.pitch == 0.0) {
+      accumulator.pitch  = -0.7f;
+      accumulator.yaw   *= 0.25f;
+   }
+
+   self->ApplyRoll((float) (accumulator.yaw * -0.4));
+   self->ApplyYaw((float) (accumulator.yaw * 0.2));
+   
+   if (fabs(accumulator.yaw) > 0.5 && fabs(accumulator.pitch) < 0.1)
+      accumulator.pitch -= 0.1f;
+
+   if (accumulator.pitch != 0)
+      self->ApplyPitch((float) accumulator.pitch);
+
+   // if not turning, roll to orient with world coords:
+   if (fabs(accumulator.yaw) < 0.1) {
+      Point vrt = ((Camera*) &(self->Cam()))->vrt();
+      double deflection = vrt.y;
+      if (deflection != 0) {
+         double theta = asin(deflection/vrt.length());
+         self->ApplyRoll(-theta);
+      }
+   }
+
+   ship->SetThrottle(100);
+   ship->ExecFLCSFrame();
+}
+
-- 
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