bool CTransportCAI::SpotIsClearIgnoreSelf(float3 pos, CUnit* unitToUnload)
{
if (!static_cast<CTransportUnit*>(owner)->CanLoadUnloadAtPos(pos, unitToUnload)) {
return false;
}
if (unitToUnload->moveDef && ground->GetSlope(pos.x,pos.z) > unitToUnload->moveDef->maxSlope) {
return false;
}
const std::vector<CUnit*>& units = quadField->GetUnitsExact(pos, std::max(1.0f, math::ceil(unitToUnload->radius / SQUARE_SIZE)) * SQUARE_SIZE);
CTransportUnit* me = static_cast<CTransportUnit*>(owner);
for (std::vector<CUnit*>::const_iterator it = units.begin(); it != units.end(); ++it) {
// check if the units are in the transport
bool found = false;
for (std::list<CTransportUnit::TransportedUnit>::const_iterator it2 = me->GetTransportedUnits().begin();
it2 != me->GetTransportedUnits().end(); ++it2) {
if (it2->unit == *it) {
found = true;
break;
}
}
if (!found && (*it != owner)) {
return false;
}
}
return true;
}
void CTransportCAI::UnloadDrop(Command& c)
{
CTransportUnit* transport = static_cast<CTransportUnit*>(owner);
// fly over and drop unit
if (inCommand) {
if (!owner->script->IsBusy()) {
FinishCommand();
}
} else {
const std::list<CTransportUnit::TransportedUnit>& transportees = transport->GetTransportedUnits();
if (transportees.empty() || dropSpots.empty()) {
FinishCommand();
return;
}
float3 pos = c.GetPos(0); // head towards goal
// note that HoverAirMoveType must be modified to allow non stop movement
// through goals for this to work well
if (goalPos.SqDistance2D(pos) > 400) {
SetGoal(pos, owner->pos);
lastDropPos = pos;
}
CHoverAirMoveType* am = dynamic_cast<CHoverAirMoveType*>(owner->moveType);
CUnit* transportee = (transportees.front()).unit;
if (am != NULL) {
pos.y = ground->GetHeightAboveWater(pos.x, pos.z);
am->maxDrift = 1;
// if near target or have past it accidentally- drop unit
if (owner->pos.SqDistance2D(pos) < 1600 || (((pos - owner->pos).Normalize()).SqDistance(owner->frontdir.Normalize()) > 0.25 && owner->pos.SqDistance2D(pos)< (205*205))) {
am->dontLand = true;
owner->script->EndTransport();
transport->DetachUnitFromAir(transportee, pos);
dropSpots.pop_back();
if (dropSpots.empty()) {
SetGoal(owner->pos + owner->frontdir * 200, owner->pos); // move the transport away after last drop
}
FinishCommand();
}
} else {
inCommand = true;
StopMove();
owner->script->TransportDrop(transportee, pos);
}
}
}
bool CTransportCAI::FindEmptyDropSpots(float3 startpos, float3 endpos, std::list<float3>& dropSpots)
{
//should only be used by air
CTransportUnit* transport = static_cast<CTransportUnit*>(owner);
//dropSpots.clear();
float gap = 25.5; // TODO - set tag for this?
float3 dir = endpos - startpos;
dir.Normalize();
float3 nextPos = startpos;
float3 pos;
std::list<CTransportUnit::TransportedUnit>::const_iterator ti = transport->GetTransportedUnits().begin();
dropSpots.push_front(nextPos);
// first spot
if (ti != transport->GetTransportedUnits().end()) {
nextPos += dir * (gap + ti->unit->radius);
++ti;
}
// remaining spots
if (dynamic_cast<CHoverAirMoveType*>(owner->moveType)) {
while (ti != transport->GetTransportedUnits().end() && startpos.SqDistance(nextPos) < startpos.SqDistance(endpos)) {
nextPos += dir * (ti->unit->radius);
nextPos.y = ground->GetHeightAboveWater(nextPos.x, nextPos.z);
// check landing spot is ok for landing on
if (!SpotIsClear(nextPos,ti->unit))
continue;
dropSpots.push_front(nextPos);
nextPos += dir * (gap + ti->unit->radius);
++ti;
}
return true;
}
return false;
}
void CTransportCAI::UnloadLandFlood(Command& c)
{
//land, then release all units at once
CTransportUnit* transport = static_cast<CTransportUnit*>(owner);
CUnit* transportee = NULL;
if (inCommand) {
if (!owner->script->IsBusy()) {
FinishCommand();
}
} else {
const std::list<CTransportUnit::TransportedUnit>& transportees = transport->GetTransportedUnits();
if (transportees.empty()) {
FinishCommand();
return;
}
if (c.params.size() < 4) {
transportee = (transportees.front()).unit;
} else {
const int unitID = c.params[3];
for (auto it = transportees.begin(); it != transportees.end(); ++it) {
CUnit* carried = it->unit;
if (unitID == carried->id) {
transportee = carried;
break;
}
}
if (transportee == NULL) {
FinishCommand();
return;
}
}
// move to position
float3 pos = c.GetPos(0);
if (isFirstIteration) {
if (goalPos.SqDistance2D(pos) > 400) {
SetGoal(startingDropPos, owner->pos);
}
}
if (startingDropPos.SqDistance2D(owner->pos) < Square(owner->unitDef->loadingRadius * 0.9f)) {
CHoverAirMoveType* am = dynamic_cast<CHoverAirMoveType*>(owner->moveType);
if (am != NULL) {
// lower to ground
startingDropPos.y = CGround::GetHeightAboveWater(startingDropPos.x, startingDropPos.z);
const float3 wantedPos = startingDropPos + UpVector * transportee->model->height;
SetGoal(wantedPos, owner->pos);
am->SetWantedAltitude(1.0f);
am->SetAllowLanding(true);
am->maxDrift = 1.0f;
// when on our way down start animations for unloading gear
if (isFirstIteration) {
owner->script->StartUnload();
}
isFirstIteration = false;
// once at ground
if (owner->pos.y - CGround::GetHeightAboveWater(wantedPos.x, wantedPos.z) < SQUARE_SIZE) {
// nail it to the ground before it tries jumping up, only to land again...
am->SetState(am->AIRCRAFT_LANDED);
// call this so that other animations such as opening doors may be started
owner->script->TransportDrop((transportees.front()).unit, pos);
transport->DetachUnitFromAir(transportee, pos);
FinishCommand();
if (transportees.empty()) {
am->SetAllowLanding(true);
owner->script->EndTransport();
am->UpdateLanded();
}
}
} else {
// land transports
inCommand = true;
isFirstIteration = false;
StopMove();
owner->script->TransportDrop((transportees.front()).unit, pos);
transport->DetachUnitFromAir(transportee, pos);
FinishCommand();
if (transportees.empty()) {
owner->script->EndTransport();
}
}
}
}
}
void CTransportCAI::UnloadLand(Command& c)
{
// default unload
CTransportUnit* transport = static_cast<CTransportUnit*>(owner);
CUnit* transportee = NULL;
float3 wantedPos = c.GetPos(0);
if (inCommand) {
if (!owner->script->IsBusy()) {
FinishCommand();
}
} else {
const std::list<CTransportUnit::TransportedUnit>& transportees = transport->GetTransportedUnits();
if (transportees.empty()) {
FinishCommand();
return;
}
SetGoal(wantedPos, owner->pos);
if (c.params.size() < 4) {
// unload the first transportee
transportee = (transportees.front()).unit;
} else {
const int unitID = c.params[3];
// unload a specific transportee
for (auto it = transportees.begin(); it != transportees.end(); ++it) {
CUnit* carried = it->unit;
if (unitID == carried->id) {
transportee = carried;
break;
}
}
if (transportee == NULL) {
FinishCommand();
return;
}
}
if (wantedPos.SqDistance2D(owner->pos) < Square(owner->unitDef->loadingRadius * 0.9f)) {
CHoverAirMoveType* am = dynamic_cast<CHoverAirMoveType*>(owner->moveType);
wantedPos.y = static_cast<CTransportUnit*>(owner)->GetTransporteeWantedHeight(wantedPos, transportee);
if (am != NULL) {
// handle air transports differently
SetGoal(wantedPos, owner->pos);
am->SetWantedAltitude(wantedPos.y - CGround::GetHeightAboveWater(wantedPos.x, wantedPos.z));
am->ForceHeading(static_cast<CTransportUnit*>(owner)->GetTransporteeWantedHeading(transportee));
am->maxDrift = 1.0f;
// FIXME: kill the hardcoded constants, use the command's radius
// NOTE: 2D distance-check would mean units get dropped from air
const bool b1 = (owner->pos.SqDistance(wantedPos) < Square(AIRTRANSPORT_DOCKING_RADIUS));
const bool b2 = (std::abs(owner->heading - am->GetForcedHeading()) < AIRTRANSPORT_DOCKING_ANGLE);
const bool b3 = (owner->updir.dot(UpVector) > 0.99f);
if (b1 && b2 && b3) {
wantedPos.y -= transportee->radius;
if (!SpotIsClearIgnoreSelf(wantedPos, transportee)) {
// chosen spot is no longer clear to land, choose a new one
// if a new spot cannot be found, don't unload at all
float3 newWantedPos;
if (FindEmptySpot(wantedPos, std::max(16.0f * SQUARE_SIZE, transportee->radius * 4.0f), transportee->radius, newWantedPos, transportee)) {
c.SetPos(0, newWantedPos);
SetGoal(newWantedPos + UpVector * transportee->model->height, owner->pos);
return;
}
} else {
transport->DetachUnit(transportee);
if (transportees.empty()) {
am->SetAllowLanding(true);
owner->script->EndTransport();
}
}
// move the transport away slightly
SetGoal(owner->pos + owner->frontdir * 20.0f, owner->pos);
FinishCommand();
}
} else {
inCommand = true;
StopMove();
owner->script->TransportDrop(transportee, wantedPos);
}
}
}
}
void CTransportCAI::UnloadLand(Command& c)
{
//default unload
CTransportUnit* transport = static_cast<CTransportUnit*>(owner);
if (inCommand) {
if (!owner->script->IsBusy()) {
FinishCommand();
}
} else {
const std::list<CTransportUnit::TransportedUnit>& transList = transport->GetTransportedUnits();
if (transList.empty()) {
FinishCommand();
return;
}
float3 pos = c.GetPos(0);
if (goalPos.SqDistance2D(pos) > 400) {
SetGoal(pos, owner->pos);
}
CUnit* unit = NULL;
if (c.params.size() < 4) {
unit = transList.front().unit;
} else {
const int unitID = (int)c.params[3];
std::list<CTransportUnit::TransportedUnit>::const_iterator it;
for (it = transList.begin(); it != transList.end(); ++it) {
CUnit* carried = it->unit;
if (unitID == carried->id) {
unit = carried;
break;
}
}
if (unit == NULL) {
FinishCommand();
return;
}
}
if (pos.SqDistance2D(owner->pos) < Square(owner->unitDef->loadingRadius * 0.9f)) {
CHoverAirMoveType* am = dynamic_cast<CHoverAirMoveType*>(owner->moveType);
pos.y = static_cast<CTransportUnit*>(owner)->GetLoadUnloadHeight(pos, unit);
if (am != NULL) {
// handle air transports differently
SetGoal(pos, owner->pos);
am->SetWantedAltitude(pos.y - ground->GetHeightAboveWater(pos.x, pos.z));
float unloadHeading = static_cast<CTransportUnit*>(owner)->GetLoadUnloadHeading(unit);
am->ForceHeading(unloadHeading);
am->maxDrift = 1;
if ((owner->pos.SqDistance(pos) < 64) &&
(owner->updir.dot(UpVector) > 0.99f) && math::fabs(owner->heading - unloadHeading) < AIRTRANSPORT_DOCKING_ANGLE) {
pos.y -= unit->radius;
if (!SpotIsClearIgnoreSelf(pos, unit)) {
// chosen spot is no longer clear to land, choose a new one
// if a new spot cannot be found, don't unload at all
float3 newpos;
if (FindEmptySpot(pos, std::max(16.0f * SQUARE_SIZE, unit->radius * 4.0f), unit->radius, newpos, unit)) {
c.SetPos(0, newpos);
SetGoal(newpos + UpVector * unit->model->height, owner->pos);
return;
}
} else {
transport->DetachUnit(unit);
if (transport->GetTransportedUnits().empty()) {
am->dontLand = false;
owner->script->EndTransport();
}
}
const float3 fix = owner->pos + owner->frontdir * 20;
SetGoal(fix, owner->pos); // move the transport away slightly
FinishCommand();
}
} else {
inCommand = true;
StopMove();
owner->script->TransportDrop(unit, pos);
}
}
}
}