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Diffstat (limited to 'Stars45/SeekerAI.cpp')
| -rw-r--r-- | Stars45/SeekerAI.cpp | 255 |
1 files changed, 0 insertions, 255 deletions
diff --git a/Stars45/SeekerAI.cpp b/Stars45/SeekerAI.cpp deleted file mode 100644 index 7976dfd..0000000 --- a/Stars45/SeekerAI.cpp +++ /dev/null @@ -1,255 +0,0 @@ -/* 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 - ======== - Seeker Missile (low-level) Artificial Intelligence class -*/ - -#include "SeekerAI.h" -#include "Ship.h" -#include "Shot.h" -#include "System.h" -#include "WeaponDesign.h" - -#include "Clock.h" - -// +----------------------------------------------------------------------+ - -SeekerAI::SeekerAI(SimObject* s) - : SteerAI(s), shot((Shot*) s), orig_target(0), - pursuit(1), delay(0), overshot(false) -{ - ai_type = SEEKER; - - seek_gain = 25; - seek_damp = 0.55; -} - - -// +--------------------------------------------------------------------+ - -SeekerAI::~SeekerAI() -{ - if (shot) { - if (shot->Owner()) - ((Ship*) shot->Owner())->SetMissileEta(shot->Identity(), 0); - } -} - -// +--------------------------------------------------------------------+ - -void -SeekerAI::ExecFrame(double seconds) -{ - // setup: - FindObjective(); - - // adaptive behavior: - Navigator(); -} - -// +--------------------------------------------------------------------+ - -void -SeekerAI::Navigator() -{ - if (delay > 0) { - delay -= Clock::GetInstance()->Delta(); - } - else { - Steer s = SeekTarget(); - self->ApplyYaw((float) s.yaw); - self->ApplyPitch((float) s.pitch); - } -} - -void -SeekerAI::SetTarget(SimObject* targ, System* sub) -{ - if (!orig_target && targ && targ->Type() == SimObject::SIM_SHIP) { - orig_target = (Ship*) targ; - Observe(orig_target); - } - - SteerAI::SetTarget(targ, sub); - - if (!target) { - shot->SetEta(0); - - if (shot->Owner()) - ((Ship*) shot->Owner())->SetMissileEta(shot->Identity(), 0); - } -} - -void -SeekerAI::FindObjective() -{ - if (!shot || !target) return; - - if (target->Life() == 0) { - if (target != orig_target) - SetTarget(orig_target,0); - else - SetTarget(0,0); - - return; - } - - Point tloc = target->Location(); - tloc = Transform(tloc); - - // seeker head limit of 45 degrees: - if (tloc.z < 0 || tloc.z < fabs(tloc.x) || tloc.z < fabs(tloc.y)) { - overshot = true; - SetTarget(0,0); - return; - } - - // distance from self to target: - distance = Point(target->Location() - self->Location()).length(); - - // are we being spoofed? - CheckDecoys(distance); - - Point cv = ClosingVelocity(); - - // time to reach target: - double time = distance / cv.length(); - double predict = time; - if (predict > 15) - predict = 15; - - // pure pursuit: - if (pursuit == 1 || time < 0.1) { - obj_w = target->Location(); - } - - // lead pursuit: - else { - // where the target will be when we reach it: - Point run_vec = target->Velocity(); - obj_w = target->Location() + (run_vec * predict); - } - - // subsystem offset: - if (subtarget) { - Point offset = target->Location() - subtarget->MountLocation(); - obj_w -= offset; - } - else if (target->Type() == SimObject::SIM_SHIP) { - Ship* tgt_ship = (Ship*) target; - - if (tgt_ship->IsGroundUnit()) - obj_w += Point(0,150,0); - } - - - distance = Point(obj_w - self->Location()).length(); - time = distance / cv.length(); - - // where we will be when the target gets there: - if (predict > 0.1 && predict < 15) { - Point self_dest = self->Location() + cv * predict; - Point err = obj_w - self_dest; - - obj_w += err; - } - - // transform into camera coords: - objective = Transform(obj_w); - objective.Normalize(); - - shot->SetEta((int) time); - - if (shot->Owner()) - ((Ship*) shot->Owner())->SetMissileEta(shot->Identity(), (int) time); -} - -// +--------------------------------------------------------------------+ - -void -SeekerAI::CheckDecoys(double target_distance) -{ - // if the assigned target has the burner lit, - // ignore the decoys: - if (orig_target && orig_target->Augmenter()) { - SetTarget(orig_target); - return; - } - - if (target && - target == orig_target && - orig_target->GetActiveDecoys().size()) { - - ListIter<Shot> decoy = orig_target->GetActiveDecoys(); - - while (++decoy) { - double decoy_distance = Point(decoy->Location() - self->Location()).length(); - - if (decoy_distance < target_distance) { - if (rand() < 1600) { - SetTarget(decoy.value(), 0); - return; - } - } - } - } -} - -// +--------------------------------------------------------------------+ - -bool -SeekerAI::Overshot() -{ - return overshot; -} - -// +--------------------------------------------------------------------+ - -Steer -SeekerAI::AvoidCollision() -{ - return Steer(); -} - -// +--------------------------------------------------------------------+ - -Steer -SeekerAI::SeekTarget() -{ - if (!self || !target || Overshot()) - return Steer(); - - return Seek(objective); -} - -// +--------------------------------------------------------------------+ - -bool -SeekerAI::Update(SimObject* obj) -{ - if (obj == target) { - if (obj->Type() == SimObject::SIM_SHOT && orig_target != 0) - target = orig_target; - } - - if (obj == orig_target) - orig_target = 0; - - return SteerAI::Update(obj); -} - -const char* -SeekerAI::GetObserverName() const -{ - static char name[64]; - sprintf_s(name, "SeekerAI(%s)", self->Name()); - return name; -} - |