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Copy pathUnitWalkBState.cpp
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606 lines (566 loc) · 17.3 KB
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/*
* Copyright 2010-2016 OpenXcom Developers.
*
* This file is part of OpenXcom.
*
* OpenXcom is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* OpenXcom is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with OpenXcom. If not, see <http://www.gnu.org/licenses/>.
*/
#include "UnitWalkBState.h"
#include "MeleeAttackBState.h"
#include "TileEngine.h"
#include "Pathfinding.h"
#include "BattlescapeState.h"
#include "Map.h"
#include "Camera.h"
#include "../Savegame/BattleUnit.h"
#include "../Savegame/SavedBattleGame.h"
#include "../Savegame/Tile.h"
#include "../Mod/Mod.h"
#include "../Engine/Sound.h"
#include "../Engine/Options.h"
#include "../Mod/Armor.h"
#include "../Engine/Logger.h"
#include "UnitFallBState.h"
namespace OpenXcom
{
/**
* Sets up an UnitWalkBState.
* @param parent Pointer to the Battlescape.
* @param action Pointer to an action.
*/
UnitWalkBState::UnitWalkBState(BattlescapeGame *parent, BattleAction action) : BattleState(parent, action), _unit(0), _pf(0), _terrain(0), _falling(false), _beforeFirstStep(false), _numUnitsSpotted(0), _preMovementCost(0)
{
}
/**
* Deletes the UnitWalkBState.
*/
UnitWalkBState::~UnitWalkBState()
{
}
/**
* Initializes the state.
*/
void UnitWalkBState::init()
{
_unit = _action.actor;
_numUnitsSpotted = _unit->getUnitsSpottedThisTurn().size();
setNormalWalkSpeed();
_pf = _parent->getPathfinding();
_terrain = _parent->getTileEngine();
_target = _action.target;
if (Options::traceAI) { Log(LOG_INFO) << "Walking from: " << _unit->getPosition() << "," << " to " << _target;}
int dir = _pf->getStartDirection();
if (!_action.strafe && dir != -1 && dir != _unit->getDirection())
{
_beforeFirstStep = true;
}
}
/**
* Runs state functionality every cycle.
*/
void UnitWalkBState::think()
{
bool unitSpotted = false;
int size = _unit->getArmor()->getSize() - 1;
bool onScreen = (_unit->getVisible() && _parent->getMap()->getCamera()->isOnScreen(_unit->getPosition(), true, size, false));
if (_unit->isKneeled())
{
if (_parent->kneel(_unit))
{
_unit->setCache(0);
_terrain->calculateFOV(_unit);
_parent->getMap()->cacheUnit(_unit);
return;
}
else
{
_action.result = "STR_NOT_ENOUGH_TIME_UNITS";
_pf->abortPath();
_parent->popState();
return;
}
}
if (_unit->isOut())
{
_pf->abortPath();
_parent->popState();
return;
}
if (_unit->getStatus() == STATUS_WALKING || _unit->getStatus() == STATUS_FLYING)
{
Tile *tileBelow = _parent->getSave()->getTile(_unit->getPosition() + Position(0,0,-1));
if ((_parent->getSave()->getTile(_unit->getDestination())->getUnit() == 0) || // next tile must be not occupied
(_parent->getSave()->getTile(_unit->getDestination())->getUnit() == _unit))
{
bool onScreenBoundary = (_unit->getVisible() && _parent->getMap()->getCamera()->isOnScreen(_unit->getPosition(), true, size, true));
_unit->keepWalking(tileBelow, onScreenBoundary); // advances the phase
playMovementSound();
}
else if (!_falling)
{
_unit->lookAt(_unit->getDestination(), (_unit->getTurretType() != -1)); // turn to undiscovered unit
_pf->abortPath();
}
// unit moved from one tile to the other, update the tiles
if (_unit->getPosition() != _unit->getLastPosition())
{
bool largeCheck = true;
for (int x = size; x >= 0; x--)
{
for (int y = size; y >= 0; y--)
{
Tile *otherTileBelow = _parent->getSave()->getTile(_unit->getPosition() + Position(x,y,-1));
if (!_parent->getSave()->getTile(_unit->getPosition() + Position(x,y,0))->hasNoFloor(otherTileBelow) || _unit->getMovementType() == MT_FLY)
largeCheck = false;
_parent->getSave()->getTile(_unit->getLastPosition() + Position(x,y,0))->setUnit(0);
}
}
for (int x = size; x >= 0; x--)
{
for (int y = size; y >= 0; y--)
{
_parent->getSave()->getTile(_unit->getPosition() + Position(x,y,0))->setUnit(_unit, _parent->getSave()->getTile(_unit->getPosition() + Position(x,y,-1)));
}
}
_falling = largeCheck && _unit->getPosition().z != 0 && _unit->getTile()->hasNoFloor(tileBelow) && _unit->getMovementType() != MT_FLY && _unit->getWalkingPhase() == 0;
if (_falling)
{
for (int x = size; x >= 0; --x)
{
for (int y = size; y >= 0; --y)
{
Tile *otherTileBelow = _parent->getSave()->getTile(_unit->getPosition() + Position(x,y,-1));
if (otherTileBelow && otherTileBelow->getUnit())
{
_falling = false;
_pf->dequeuePath();
_parent->getSave()->addFallingUnit(_unit);
_parent->statePushFront(new UnitFallBState(_parent));
return;
}
}
}
}
if (!_parent->getMap()->getCamera()->isOnScreen(_unit->getPosition(), true, size, false) && _unit->getFaction() != FACTION_PLAYER && _unit->getVisible())
_parent->getMap()->getCamera()->centerOnPosition(_unit->getPosition());
// if the unit changed level, camera changes level with
_parent->getMap()->getCamera()->setViewLevel(_unit->getPosition().z);
}
// is the step finished?
if (_unit->getStatus() == STATUS_STANDING)
{
// update the TU display
_parent->getSave()->getBattleState()->updateSoldierInfo();
// if the unit burns floortiles, burn floortiles as long as we're not falling
if (!_falling && (_unit->getSpecialAbility() == SPECAB_BURNFLOOR || _unit->getSpecialAbility() == SPECAB_BURN_AND_EXPLODE))
{
_unit->getTile()->ignite(1);
Position posHere = _unit->getPosition();
Position voxelHere = (posHere * Position(16,16,24)) + Position(8,8,-(_unit->getTile()->getTerrainLevel()));
_parent->getTileEngine()->hit(voxelHere, _unit->getBaseStats()->strength, DT_IN, _unit);
if (_unit->getStatus() != STATUS_STANDING) // ie: we burned a hole in the floor and fell through it
{
_pf->abortPath();
return;
}
}
// move our personal lighting with us
_terrain->calculateUnitLighting();
if (_unit->getFaction() != FACTION_PLAYER)
{
_unit->setVisible(false);
}
_terrain->calculateFOV(_unit->getPosition());
unitSpotted = (!_falling && !_action.desperate && _parent->getPanicHandled() && _numUnitsSpotted != _unit->getUnitsSpottedThisTurn().size());
if (_parent->checkForProximityGrenades(_unit))
{
_parent->popState();
return;
}
if (unitSpotted)
{
_unit->setCache(0);
_parent->getMap()->cacheUnit(_unit);
_pf->abortPath();
_parent->popState();
return;
}
// check for reaction fire
if (!_falling)
{
if (_terrain->checkReactionFire(_unit))
{
// unit got fired upon - stop walking
_unit->setCache(0);
_parent->getMap()->cacheUnit(_unit);
_pf->abortPath();
_parent->popState();
return;
}
}
}
else if (onScreen)
{
// make sure the unit sprites are up to date
if (_pf->getStrafeMove())
{
// This is where we fake out the strafe movement direction so the unit "moonwalks"
int dirTemp = _unit->getDirection();
_unit->setDirection(_unit->getFaceDirection());
_parent->getMap()->cacheUnit(_unit);
_unit->setDirection(dirTemp);
}
else
{
_parent->getMap()->cacheUnit(_unit);
}
}
}
// we are just standing around, shouldn't we be walking?
if (_unit->getStatus() == STATUS_STANDING || _unit->getStatus() == STATUS_PANICKING)
{
// check if we did spot new units
if (unitSpotted && !_action.desperate && _unit->getCharging() == 0 && !_falling)
{
if (Options::traceAI) { Log(LOG_INFO) << "Uh-oh! Company!"; }
_unit->setHiding(false); // clearly we're not hidden now
_parent->getMap()->cacheUnit(_unit);
postPathProcedures();
return;
}
if (onScreen || _parent->getSave()->getDebugMode())
{
setNormalWalkSpeed();
}
else
{
_parent->setStateInterval(0);
}
int dir = _pf->getStartDirection();
if (_falling)
{
dir = Pathfinding::DIR_DOWN;
}
if (dir != -1)
{
if (_pf->getStrafeMove())
{
_unit->setFaceDirection(_unit->getDirection());
}
Position destination;
int tu = _pf->getTUCost(_unit->getPosition(), dir, &destination, _unit, 0, false); // gets tu cost, but also gets the destination position.
if (_unit->getFaction() != FACTION_PLAYER &&
_unit->getSpecialAbility() < SPECAB_BURNFLOOR &&
_parent->getSave()->getTile(destination) &&
_parent->getSave()->getTile(destination)->getFire() > 0)
{
tu -= 32; // we artificially inflate the TU cost by 32 points in getTUCost under these conditions, so we have to deflate it here.
}
if (_falling)
{
tu = 0;
}
int energy = tu;
if (dir >= Pathfinding::DIR_UP)
{
energy = 0;
}
else if (_action.run)
{
tu *= 0.75;
energy *= 1.5;
}
if (tu > _unit->getTimeUnits())
{
if (_parent->getPanicHandled() && tu < 255)
{
_action.result = "STR_NOT_ENOUGH_TIME_UNITS";
}
_pf->abortPath();
_unit->setCache(0);
_parent->getMap()->cacheUnit(_unit);
_parent->popState();
return;
}
if (energy / 2 > _unit->getEnergy())
{
if (_parent->getPanicHandled())
{
_action.result = "STR_NOT_ENOUGH_ENERGY";
}
_pf->abortPath();
_unit->setCache(0);
_parent->getMap()->cacheUnit(_unit);
_parent->popState();
return;
}
if (_parent->getPanicHandled() && _parent->checkReservedTU(_unit, tu) == false)
{
_pf->abortPath();
_unit->setCache(0);
_parent->getMap()->cacheUnit(_unit);
return;
}
// we are looking in the wrong way, turn first (unless strafing)
// we are not using the turn state, because turning during walking costs no tu
if (dir != _unit->getDirection() && dir < Pathfinding::DIR_UP && !_pf->getStrafeMove())
{
_unit->lookAt(dir);
_unit->setCache(0);
_parent->getMap()->cacheUnit(_unit);
return;
}
// now open doors (if any)
if (dir < Pathfinding::DIR_UP)
{
int door = _terrain->unitOpensDoor(_unit, false, dir);
if (door == 3)
{
return; // don't start walking yet, wait for the ufo door to open
}
if (door == 0)
{
_parent->getMod()->getSoundByDepth(_parent->getDepth(), Mod::DOOR_OPEN)->play(-1, _parent->getMap()->getSoundAngle(_unit->getPosition())); // normal door
}
if (door == 1)
{
_parent->getMod()->getSoundByDepth(_parent->getDepth(), Mod::SLIDING_DOOR_OPEN)->play(-1, _parent->getMap()->getSoundAngle(_unit->getPosition())); // ufo door
return; // don't start walking yet, wait for the ufo door to open
}
}
for (int x = size; x >= 0; --x)
{
for (int y = size; y >= 0; --y)
{
BattleUnit* unitInMyWay = _parent->getSave()->getTile(destination + Position(x,y,0))->getUnit();
BattleUnit* unitBelowMyWay = 0;
Tile* belowDest = _parent->getSave()->getTile(destination + Position(x,y,-1));
if (belowDest)
{
unitBelowMyWay = belowDest->getUnit();
}
// can't walk into units in this tile, or on top of other units sticking their head into this tile
if (!_falling &&
((unitInMyWay && unitInMyWay != _unit)
|| (belowDest && unitBelowMyWay && unitBelowMyWay != _unit &&
(-belowDest->getTerrainLevel() + unitBelowMyWay->getFloatHeight() + unitBelowMyWay->getHeight())
>= 28))) // 4+ voxels poking into the tile above, we don't kick people in the head here at XCom.
{
_action.TU = 0;
_pf->abortPath();
_unit->setCache(0);
_parent->getMap()->cacheUnit(_unit);
_parent->popState();
return;
}
}
}
// now start moving
dir = _pf->dequeuePath();
if (_falling)
{
dir = Pathfinding::DIR_DOWN;
}
if (_unit->spendTimeUnits(tu))
{
if (_unit->spendEnergy(energy))
{
Tile *tileBelow = _parent->getSave()->getTile(_unit->getPosition() + Position(0,0,-1));
_unit->startWalking(dir, destination, tileBelow, onScreen);
_beforeFirstStep = false;
}
}
// make sure the unit sprites are up to date
if (onScreen)
{
if (_pf->getStrafeMove())
{
// This is where we fake out the strafe movement direction so the unit "moonwalks"
int dirTemp = _unit->getDirection();
_unit->setDirection(_unit->getFaceDirection());
_parent->getMap()->cacheUnit(_unit);
_unit->setDirection(dirTemp);
}
else
{
_parent->getMap()->cacheUnit(_unit);
}
}
}
else
{
postPathProcedures();
return;
}
}
// turning during walking costs no tu
if (_unit->getStatus() == STATUS_TURNING)
{
// except before the first step.
if (_beforeFirstStep)
{
_preMovementCost++;
}
_unit->turn();
// calculateFOV is unreliable for setting the unitSpotted bool, as it can be called from various other places
// in the code, ie: doors opening, and this messes up the result.
_terrain->calculateFOV(_unit);
unitSpotted = (!_falling && !_action.desperate && _parent->getPanicHandled() && _numUnitsSpotted != _unit->getUnitsSpottedThisTurn().size());
// make sure the unit sprites are up to date
_unit->setCache(0);
_parent->getMap()->cacheUnit(_unit);
if (unitSpotted && !_action.desperate && !_unit->getCharging() && !_falling)
{
if (_beforeFirstStep)
{
_unit->spendTimeUnits(_preMovementCost);
}
if (Options::traceAI) { Log(LOG_INFO) << "Egads! A turn reveals new units! I must pause!"; }
_unit->setHiding(false); // not hidden, are we...
_pf->abortPath();
_unit->abortTurn(); //revert to a standing state.
_unit->setCache(0);
_parent->getMap()->cacheUnit(_unit);
_parent->popState();
}
}
}
/**
* Aborts unit walking.
*/
void UnitWalkBState::cancel()
{
if (_parent->getSave()->getSide() == FACTION_PLAYER && _parent->getPanicHandled())
_pf->abortPath();
}
/**
* Handles some calculations when the path is finished.
*/
void UnitWalkBState::postPathProcedures()
{
_action.TU = 0;
if (_unit->getFaction() != FACTION_PLAYER)
{
int dir = _action.finalFacing;
if (_action.finalAction)
{
_unit->dontReselect();
}
if (_unit->getCharging() != 0)
{
dir = _parent->getTileEngine()->getDirectionTo(_unit->getPosition(), _unit->getCharging()->getPosition());
if (_parent->getTileEngine()->validMeleeRange(_unit, _action.actor->getCharging(), dir))
{
BattleAction action;
action.actor = _unit;
action.target = _unit->getCharging()->getPosition();
action.weapon = _unit->getMeleeWeapon();
action.type = BA_HIT;
action.TU = _unit->getActionTUs(action.type, action.weapon);
action.targeting = true;
_unit->setCharging(0);
_parent->statePushBack(new MeleeAttackBState(_parent, action));
}
}
else if (_unit->isHiding())
{
dir = _unit->getDirection() + 4;
_unit->setHiding(false);
_unit->dontReselect();
}
if (dir != -1)
{
if (dir >= 8)
{
dir -= 8;
}
_unit->lookAt(dir);
while (_unit->getStatus() == STATUS_TURNING)
{
_unit->turn();
_parent->getTileEngine()->calculateFOV(_unit);
}
}
}
else if (!_parent->getPanicHandled())
{
//todo: set the unit to aggrostate and try to find cover?
_unit->setTimeUnits(0);
}
_unit->setCache(0);
_terrain->calculateUnitLighting();
_terrain->calculateFOV(_unit);
_parent->getMap()->cacheUnit(_unit);
if (!_falling)
_parent->popState();
}
/**
* Handles some calculations when the walking is finished.
*/
void UnitWalkBState::setNormalWalkSpeed()
{
if (_unit->getFaction() == FACTION_PLAYER)
_parent->setStateInterval(Options::battleXcomSpeed);
else
_parent->setStateInterval(Options::battleAlienSpeed);
}
/**
* Handles the stepping sounds.
*/
void UnitWalkBState::playMovementSound()
{
int size = _unit->getArmor()->getSize() - 1;
if ((!_unit->getVisible() && !_parent->getSave()->getDebugMode()) || !_parent->getMap()->getCamera()->isOnScreen(_unit->getPosition(), true, size, false)) return;
if (_unit->getMoveSound() != -1)
{
// if a sound is configured in the ruleset, play that one
if (_unit->getWalkingPhase() == 0)
{
_parent->getMod()->getSoundByDepth(_parent->getDepth(), _unit->getMoveSound())->play(-1, _parent->getMap()->getSoundAngle(_unit->getPosition()));
}
}
else
{
if (_unit->getStatus() == STATUS_WALKING)
{
Tile *tile = _unit->getTile();
Tile *tileBelow = _parent->getSave()->getTile(tile->getPosition() + Position(0,0,-1));
// play footstep sound 1
if (_unit->getWalkingPhase() == 3)
{
if (tile->getFootstepSound(tileBelow) > -1)
{
_parent->getMod()->getSoundByDepth(_parent->getDepth(), Mod::WALK_OFFSET + (tile->getFootstepSound(tileBelow)*2))->play(-1, _parent->getMap()->getSoundAngle(_unit->getPosition()));
}
}
// play footstep sound 2
if (_unit->getWalkingPhase() == 7)
{
if (tile->getFootstepSound(tileBelow) > -1)
{
_parent->getMod()->getSoundByDepth(_parent->getDepth(), 1 + Mod::WALK_OFFSET + (tile->getFootstepSound(tileBelow)*2))->play(-1, _parent->getMap()->getSoundAngle(_unit->getPosition()));
}
}
}
else if (_unit->getMovementType() == MT_FLY)
{
// play default flying sound
if (_unit->getWalkingPhase() == 1 && !_falling)
{
_parent->getMod()->getSoundByDepth(_parent->getDepth(), Mod::FLYING_SOUND)->play(-1, _parent->getMap()->getSoundAngle(_unit->getPosition()));
}
}
}
}
}