Moved Stars45 to StarsEx

1 files changed, 120 insertions, 0 deletions

diff --git a/StarsEx/DropShipAI.cpp b/StarsEx/DropShipAI.cpp
new file mode 100644
index 0000000..bc563fc
--- /dev/null
+++ b/StarsEx/DropShipAI.cpp
@@ -0,0 +1,120 @@
+/*  Starshatter: The Open Source Project
+    Copyright (c) 2021-2022, Starshatter: The Open Source Project Contributors
+    Copyright (c) 2011-2012, Starshatter OpenSource Distribution Contributors
+    Copyright (c) 1997-2006, Destroyer Studios LLC.
+
+    AUTHOR:       John DiCamillo
+
+
+    OVERVIEW
+    ========
+    Drop Ship (orbit/surface and surface/orbit) AI class
+*/
+
+#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();
+}
+