/*  Starshatter OpenSource Distribution
    Copyright (c) 1997-2004, Destroyer Studios LLC.
    All Rights Reserved.

    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright notice,
      this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright notice,
      this list of conditions and the following disclaimer in the documentation
      and/or other materials provided with the distribution.
    * Neither the name "Destroyer Studios" nor the names of its contributors
      may be used to endorse or promote products derived from this software
      without specific prior written permission.

    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
    AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
    ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
    POSSIBILITY OF SUCH DAMAGE.

    SUBSYSTEM:    Stars.exe
    FILE:         Instruction.cpp
    AUTHOR:       John DiCamillo


    OVERVIEW
    ========
    Navigation Point class implementation
*/

#include "MemDebug.h"
#include "Instruction.h"
#include "Element.h"
#include "RadioMessage.h"
#include "Ship.h"
#include "Sim.h"

#include "Game.h"
#include "Text.h"

// +----------------------------------------------------------------------+

Instruction::Instruction(int act, const char* tgt)
: region(0), action(act), formation(0), tgt_name(tgt),
status(PENDING), speed(0), target(0), emcon(0), wep_free(0),
priority(PRIMARY), farcast(0), hold_time(0)
{ }

Instruction::Instruction(const char* rgn, Point loc, int act)
: region(0), action(act), formation(0),
status(PENDING), speed(0), target(0), emcon(0), wep_free(0),
priority(PRIMARY), farcast(0), hold_time(0)
{
    rgn_name = rgn;
    rloc.SetBaseLocation(loc);
    rloc.SetDistance(0);
}

Instruction::Instruction(SimRegion* rgn, Point loc, int act)
: region(rgn), action(act), formation(0),
status(PENDING), speed(0), target(0), emcon(0), wep_free(0),
priority(PRIMARY), farcast(0), hold_time(0)
{
    rgn_name = region->Name();
    rloc.SetBaseLocation(loc);
    rloc.SetDistance(0);
}

Instruction::Instruction(const Instruction& instr)
: region(instr.region), rgn_name(instr.rgn_name),
rloc(instr.rloc), action(instr.action),
formation(instr.formation), status(instr.status), speed(instr.speed),
target(0), tgt_name(instr.tgt_name), tgt_desc(instr.tgt_desc),
emcon(instr.emcon), wep_free(instr.wep_free),
priority(instr.priority), farcast(instr.farcast),
hold_time(instr.hold_time)
{
    SetTarget(instr.target);
}

Instruction::~Instruction()
{ }

// +--------------------------------------------------------------------+

Instruction&
Instruction::operator = (const Instruction& n)
{
    rgn_name    = n.rgn_name;
    region      = n.region;
    rloc        = n.rloc;
    action      = n.action;
    formation   = n.formation;
    status      = n.status;
    speed       = n.speed;

    tgt_name    = n.tgt_name;
    tgt_desc    = n.tgt_desc;
    target      = 0;
    emcon       = n.emcon;
    wep_free    = n.wep_free;
    priority    = n.priority;
    farcast     = n.farcast;
    hold_time   = n.hold_time;

    SetTarget(n.target);
    return *this;
}

// +--------------------------------------------------------------------+

Point
Instruction::Location() const
{
    Instruction* pThis = (Instruction*) this;
    return pThis->rloc.Location();
}

void
Instruction::SetLocation(const Point& l)
{
    rloc.SetBaseLocation(l);
    rloc.SetReferenceLoc(0);
    rloc.SetDistance(0);
}

// +----------------------------------------------------------------------+

SimObject*
Instruction::GetTarget()
{
    if (!target && tgt_name.length() > 0) {
        Sim*  sim = Sim::GetSim();

        if (sim) {
            Ship* s = sim->FindShip(tgt_name, rgn_name);

            if (s) {
                target = s;
                Observe(target);
            }
        }
    }

    return target;
}

void
Instruction::SetTarget(const char* n)
{
    if (n && *n && tgt_name != n) {
        tgt_name = n;
        tgt_desc = n;

        if (target)
        target = 0;
    }
}

void
Instruction::SetTarget(SimObject* s)
{
    if (s && target != s) {
        tgt_name = s->Name();
        target   = s;
        Observe(target);
    }
}

void
Instruction::SetTargetDesc(const char* d)
{
    if (d && *d)
    tgt_desc = d;
}

void
Instruction::ClearTarget()
{
    if (target) {
        target = 0;
        tgt_name = "";
        tgt_desc = "";
    }
}

// +----------------------------------------------------------------------+

bool
Instruction::Update(SimObject* obj)
{
    if (target == obj)
    target = 0;

    return SimObserver::Update(obj);
}

const char*
Instruction::GetObserverName() const
{
    return "Instruction";
}

// +----------------------------------------------------------------------+

void
Instruction::Evaluate(Ship* ship)
{
    Sim* sim = Sim::GetSim();

    switch (action) {
    case VECTOR:
        break;

    case LAUNCH:
        if (ship->GetFlightPhase() == Ship::ACTIVE)
        SetStatus(COMPLETE);
        break;

    case DOCK:
    case RTB:
        if (sim->GetPlayerShip() == ship &&
                (ship->GetFlightPhase() == Ship::DOCKING ||
                    ship->GetFlightPhase() == Ship::DOCKED))
        SetStatus(COMPLETE);
        else if (ship->Integrity() < 1)
        SetStatus(FAILED);
        break;

    case DEFEND:
    case ESCORT:
        {
            bool found = false;
            bool safe  = true;

            ListIter<Element> iter = sim->GetElements();
            while (++iter && !found) {
                Element* e = iter.value();

                if (e->IsFinished() || e->IsSquadron())
                continue;

                if (e->Name() == tgt_name ||
                        (e->GetCommander() && e->GetCommander()->Name() == tgt_name)) {

                    found = true;

                    for (int i = 0; i < e->NumShips(); i++) {
                        Ship* s = e->GetShip(i+1);

                        if (s && s->Integrity() < 1)
                        SetStatus(FAILED);
                    }

                    if (status == PENDING) {
                        // if the element had a flight plan, and all nav points
                        // have been addressed, then the element is safe
                        if (e->FlightPlanLength() > 0) {
                            if (e->GetNextNavPoint() == 0)
                            SetStatus(COMPLETE);
                            else
                            safe = false;
                        }
                    }
                }
            }

            if (status == PENDING && safe &&
                    sim->GetPlayerShip() == ship &&
                    (ship->GetFlightPhase() == Ship::DOCKING ||
                        ship->GetFlightPhase() == Ship::DOCKED)) {
                SetStatus(COMPLETE);
            }
        }
        break;

    case PATROL:
    case SWEEP:
        {
            Sim* sim   = Sim::GetSim();
            bool alive = false;

            ListIter<Element> iter = sim->GetElements();
            while (++iter) {
                Element* e = iter.value();

                if (e->IsFinished() || e->IsSquadron())
                continue;

                if (e->GetIFF() && e->GetIFF() != ship->GetIFF()) {
                    for (int i = 0; i < e->NumShips(); i++) {
                        Ship* s = e->GetShip(i+1);

                        if (s && s->Integrity() >= 1)
                        alive = true;
                    }
                }
            }

            if (status == PENDING && !alive) {
                SetStatus(COMPLETE);
            }
        }
        break;

    case INTERCEPT:
    case STRIKE:
    case ASSAULT:
        {
            Sim* sim   = Sim::GetSim();
            bool alive = false;

            ListIter<Element> iter = sim->GetElements();
            while (++iter) {
                Element* e = iter.value();

                if (e->IsFinished() || e->IsSquadron())
                continue;

                if (e->Name() == tgt_name) {
                    for (int i = 0; i < e->NumShips(); i++) {
                        Ship* s = e->GetShip(i+1);

                        if (s && s->Integrity() >= 1)
                        alive = true;
                    }
                }
            }

            if (status == PENDING && !alive) {
                SetStatus(COMPLETE);
            }
        }
        break;

    case RECON:
        break;

    default:
        break;
    }
}

void
Instruction::SetStatus(int s)
{
    status = s;
}

// +----------------------------------------------------------------------+

const char*
Instruction::GetShortDescription() const
{
    static char desc[256];

    switch (action) {
    case VECTOR:
        if (farcast)
        sprintf_s(desc, Game::GetText("instr.short.farcast").data(), rgn_name.data());
        else
        sprintf_s(desc, Game::GetText("instr.short.vector").data(), rgn_name.data());
        break;

    case LAUNCH:
        sprintf_s(desc, Game::GetText("instr.short.launch").data(), tgt_name.data());
        break;

    case DOCK:
        sprintf_s(desc, Game::GetText("instr.short.dock").data(), tgt_name.data());
        break;

    case RTB:
        sprintf_s(desc, Game::GetText("instr.short.return-to-base").data());
        break;

    case DEFEND:
        if (priority == PRIMARY) {
            sprintf_s(desc, Game::GetText("instr.short.defend").data(), ActionName(action), tgt_desc.data());
        }
        else {
            sprintf_s(desc, Game::GetText("instr.short.protect").data(), tgt_desc.data());
        }
        break;

    case ESCORT:
        if (priority == PRIMARY) {
            sprintf_s(desc, Game::GetText("instr.short.escort").data(), ActionName(action), tgt_desc.data());
        }
        else {
            sprintf_s(desc, Game::GetText("instr.short.protect").data(), tgt_desc.data());
        }
        break;

    case PATROL:
        sprintf_s(desc, Game::GetText("instr.short.patrol").data(),
        tgt_desc.data(),
        rgn_name.data());
        break;

    case SWEEP:
        sprintf_s(desc, Game::GetText("instr.short.sweep").data(),
        tgt_desc.data(),
        rgn_name.data());
        break;

    case INTERCEPT:
        sprintf_s(desc, Game::GetText("instr.short.intercept").data(), tgt_desc.data());
        break;

    case STRIKE:
        sprintf_s(desc, Game::GetText("instr.short.strike").data(), tgt_desc.data());
        break;

    case ASSAULT:
        sprintf_s(desc, Game::GetText("instr.short.assault").data(), tgt_desc.data());
        break;

    case RECON:
        sprintf_s(desc, Game::GetText("instr.short.recon").data(), tgt_desc.data());
        break;

    default:
        sprintf_s(desc, "%s", ActionName(action));
        break;
    }

    if (status != PENDING) {
        strcat_s(desc, " - ");
        strcat_s(desc, Game::GetText(StatusName(status)));
    }

    return desc;
}

// +----------------------------------------------------------------------+

const char*
Instruction::GetDescription() const
{
    static char desc[1024];

    switch (action) {
    case VECTOR:
        if (farcast)
        sprintf_s(desc, Game::GetText("instr.long.farcast").data(), rgn_name.data());
        else
        sprintf_s(desc, Game::GetText("instr.long.vector").data(), rgn_name.data());
        break;

    case LAUNCH:
        sprintf_s(desc, Game::GetText("instr.long.launch").data(), tgt_name.data());
        break;

    case DOCK:
        sprintf_s(desc, Game::GetText("instr.long.dock").data(), tgt_name.data());
        break;

    case RTB:
        sprintf_s(desc, Game::GetText("instr.long.return-to-base").data());
        break;

    case DEFEND:
        if (priority == PRIMARY) {
            sprintf_s(desc, Game::GetText("instr.long.defend").data(), ActionName(action), tgt_desc.data());
        }
        else {
            sprintf_s(desc, Game::GetText("instr.long.protect").data(), tgt_desc.data());
        }
        break;

    case ESCORT:
        if (priority == PRIMARY) {
            sprintf_s(desc, Game::GetText("instr.long.escort").data(), ActionName(action), tgt_desc.data());
        }
        else {
            sprintf_s(desc, Game::GetText("instr.long.protect").data(), tgt_desc.data());
        }
        break;

    case PATROL:
        sprintf_s(desc, Game::GetText("instr.long.patrol").data(),
        tgt_desc.data(),
        rgn_name.data());
        break;

    case SWEEP:
        sprintf_s(desc, Game::GetText("instr.long.sweep").data(),
        tgt_desc.data(),
        rgn_name.data());
        break;

    case INTERCEPT:
        sprintf_s(desc, Game::GetText("instr.long.intercept").data(), tgt_desc.data());
        break;

    case STRIKE:
        sprintf_s(desc, Game::GetText("instr.long.strike").data(), tgt_desc.data());
        break;

    case ASSAULT:
        sprintf_s(desc, Game::GetText("instr.long.assault").data(), tgt_desc.data());
        break;

    case RECON:
        sprintf_s(desc, Game::GetText("instr.long.recon").data(), tgt_desc.data());
        break;

    default:
        sprintf_s(desc, "%s", ActionName(action));
        break;
    }

    if (status != PENDING) {
        strcat_s(desc, " - ");
        strcat_s(desc, Game::GetText(StatusName(status)));
    }

    return desc;
}

// +----------------------------------------------------------------------+

const char*
Instruction::ActionName(int a)
{
    switch (a) {
    case VECTOR:      return "Vector";
    case LAUNCH:      return "Launch";
    case DOCK:        return "Dock";
    case RTB:         return "RTB";

    case DEFEND:      return "Defend";
    case ESCORT:      return "Escort";
    case PATROL:      return "Patrol";
    case SWEEP:       return "Sweep";
    case INTERCEPT:   return "Intercept";
    case STRIKE:      return "Strike";
    case ASSAULT:     return "Assault";
    case RECON:       return "Recon";

    default:          return "Unknown";
    }
}

const char*
Instruction::StatusName(int s)
{
    switch (s) {
    case PENDING:     return "Pending";
    case ACTIVE:      return "Active";
    case SKIPPED:     return "Skipped";
    case ABORTED:     return "Aborted";
    case FAILED:      return "Failed";
    case COMPLETE:    return "Complete";

    default:          return "Unknown";
    }
}

const char*
Instruction::FormationName(int f)
{
    switch (f) {
    case DIAMOND:     return "Diamond";
    case SPREAD:      return "Spread";
    case BOX:         return "Box";
    case TRAIL:       return "Trail";

    default:          return "Unknown";
    }
}

const char*
Instruction::PriorityName(int p)
{
    switch (p) {
    case PRIMARY:     return "Primary";
    case SECONDARY:   return "Secondary";
    case BONUS:       return "Bonus";

    default:          return "Unknown";
    }
}