void MWMechanics::AiPackage::evadeObstacles(const MWWorld::Ptr& actor, float duration, const ESM::Position& pos)
{
zTurn(actor, mPathFinder.getZAngleToNext(pos.pos[0], pos.pos[1]));
MWMechanics::Movement& movement = actor.getClass().getMovementSettings(actor);
// check if stuck due to obstacles
if (!mObstacleCheck.check(actor, duration)) return;
// first check if obstacle is a door
MWWorld::Ptr door = getNearbyDoor(actor); // NOTE: checks interior cells only
if (door != MWWorld::Ptr())
{
// note: AiWander currently does not open doors
if (getTypeId() != TypeIdWander && !door.getCellRef().getTeleport() && door.getCellRef().getTrap().empty()
&& door.getCellRef().getLockLevel() <= 0 && door.getClass().getDoorState(door) == 0)
{
MWBase::Environment::get().getWorld()->activateDoor(door, 1);
}
}
else // any other obstacle (NPC, crate, etc.)
{
mObstacleCheck.takeEvasiveAction(movement);
}
}
void MWMechanics::AiPackage::evadeObstacles(const MWWorld::Ptr& actor, float duration, const ESM::Position& pos)
{
zTurn(actor, mPathFinder.getZAngleToNext(pos.pos[0], pos.pos[1]));
MWMechanics::Movement& movement = actor.getClass().getMovementSettings(actor);
if (mObstacleCheck.check(actor, duration))
{
// first check if we're walking into a door
MWWorld::Ptr door = getNearbyDoor(actor);
if (door != MWWorld::Ptr()) // NOTE: checks interior cells only
{
if (!door.getCellRef().getTeleport() && door.getCellRef().getTrap().empty()
&& door.getCellRef().getLockLevel() <= 0 && door.getClass().getDoorState(door) == 0) {
MWBase::Environment::get().getWorld()->activateDoor(door, 1);
}
}
else // probably walking into another NPC
{
mObstacleCheck.takeEvasiveAction(movement);
}
}
else { //Not stuck, so reset things
movement.mPosition[1] = 1; //Just run forward
}
}
bool MWMechanics::AiAvoidDoor::execute (const MWWorld::Ptr& actor,float duration)
{
ESM::Position pos = actor.getRefData().getPosition();
if(mDuration == 1) //If it just started, get the actor position as the stuck detection thing
mLastPos = pos;
mDuration -= duration; //Update timer
if(mDuration < 0) {
float x = pos.pos[0] - mLastPos.pos[0];
float y = pos.pos[1] - mLastPos.pos[1];
float z = pos.pos[2] - mLastPos.pos[2];
int distance = x * x + y * y + z * z;
if(distance < 10 * 10) { //Got stuck, didn't move
if(mAdjAngle == 0) //Try going in various directions
mAdjAngle = 1.57079632679f; //pi/2
else if (mAdjAngle == 1.57079632679f)
mAdjAngle = -1.57079632679;
else
mAdjAngle = 0;
mDuration = 1; //reset timer
}
else //Not stuck
return true; // We have tried backing up for more than one second, we've probably cleared it
}
if (!mDoorPtr.getClass().getDoorState(mDoorPtr))
return true; //Door is no longer opening
ESM::Position tPos = mDoorPtr.getRefData().getPosition(); //Position of the door
float x = pos.pos[0] - tPos.pos[0];
float y = pos.pos[1] - tPos.pos[1];
actor.getClass().getCreatureStats(actor).setMovementFlag(CreatureStats::Flag_Run, true);
// Turn away from the door and move when turn completed
if (zTurn(actor, Ogre::Radian(std::atan2(x,y) + mAdjAngle), Ogre::Degree(5)))
actor.getClass().getMovementSettings(actor).mPosition[1] = 1;
else
actor.getClass().getMovementSettings(actor).mPosition[1] = 0;
actor.getClass().getMovementSettings(actor).mPosition[0] = 0;
// Make all nearby actors also avoid the door
std::vector<MWWorld::Ptr> actors;
MWBase::Environment::get().getMechanicsManager()->getActorsInRange(Ogre::Vector3(pos.pos[0],pos.pos[1],pos.pos[2]),100,actors);
for(std::vector<MWWorld::Ptr>::iterator it = actors.begin(); it != actors.end(); it++) {
if(*it != MWBase::Environment::get().getWorld()->getPlayerPtr()) { //Not the player
MWMechanics::AiSequence& seq = it->getClass().getCreatureStats(*it).getAiSequence();
if(seq.getTypeId() != MWMechanics::AiPackage::TypeIdAvoidDoor) { //Only add it once
seq.stack(MWMechanics::AiAvoidDoor(mDoorPtr),*it);
}
}
}
return false;
}
bool MWMechanics::AiPackage::pathTo(const MWWorld::Ptr& actor, ESM::Pathgrid::Point dest, float duration)
{
//Update various Timers
mTimer += duration; //Update timer
mStuckTimer += duration; //Update stuck timer
mTotalTime += duration; //Update total time following
ESM::Position pos = actor.getRefData().getPosition(); //position of the actor
/// Stops the actor when it gets too close to a unloaded cell
{
MWWorld::Ptr player = MWBase::Environment::get().getWorld()->getPlayerPtr();
const ESM::Cell *cell = actor.getCell()->getCell();
Movement &movement = actor.getClass().getMovementSettings(actor);
//Ensure pursuer doesn't leave loaded cells
if(cell->mData.mX != player.getCell()->getCell()->mData.mX)
{
int sideX = PathFinder::sgn(cell->mData.mX - player.getCell()->getCell()->mData.mX);
//check if actor is near the border of an inactive cell. If so, stop walking.
if(sideX * (pos.pos[0] - cell->mData.mX*ESM::Land::REAL_SIZE) > sideX * (ESM::Land::REAL_SIZE/2.0f - 200.0f))
{
movement.mPosition[1] = 0;
return false;
}
}
if(cell->mData.mY != player.getCell()->getCell()->mData.mY)
{
int sideY = PathFinder::sgn(cell->mData.mY - player.getCell()->getCell()->mData.mY);
//check if actor is near the border of an inactive cell. If so, stop walking.
if(sideY * (pos.pos[1] - cell->mData.mY*ESM::Land::REAL_SIZE) > sideY * (ESM::Land::REAL_SIZE/2.0f - 200.0f))
{
movement.mPosition[1] = 0;
return false;
}
}
}
//Start position
ESM::Pathgrid::Point start = pos.pos;
//***********************
/// Checks if you can't get to the end position at all, adds end position to end of path
/// Rebuilds path every quarter of a second, in case the target has moved
//***********************
if(mTimer > 0.25)
{
if(distance(mPrevDest, dest) > 10) { //Only rebuild path if it's moved
mPathFinder.buildPath(start, dest, actor.getCell(), true); //Rebuild path, in case the target has moved
mPrevDest = dest;
}
if(!mPathFinder.getPath().empty()) //Path has points in it
{
ESM::Pathgrid::Point lastPos = mPathFinder.getPath().back(); //Get the end of the proposed path
if(distance(dest, lastPos) > 100) //End of the path is far from the destination
mPathFinder.addPointToPath(dest); //Adds the final destination to the path, to try to get to where you want to go
}
mTimer = 0;
}
//************************
/// Checks if you aren't moving; attempts to unstick you
//************************
if(mPathFinder.checkPathCompleted(pos.pos[0],pos.pos[1],pos.pos[2])) //Path finished?
return true;
else if(mStuckTimer>0.5) //Every half second see if we need to take action to avoid something
{
/// TODO (tluppi#1#): Use ObstacleCheck here. Not working for some reason
//if(mObstacleCheck.check(actor, duration)) {
if(distance(start, mStuckPos.pos[0], mStuckPos.pos[1], mStuckPos.pos[2]) < 10 && distance(dest, start) > 20) { //Actually stuck, and far enough away from destination to care
// first check if we're walking into a door
MWWorld::Ptr door = getNearbyDoor(actor);
if(door != MWWorld::Ptr()) // NOTE: checks interior cells only
{
if(door.getCellRef().mTrap.empty() && mLastDoorChecked != door) { //Open the door if untrapped
door.getClass().activate(door, actor).get()->execute(actor);
mLastDoorChecked = door;
}
}
else // probably walking into another NPC
{
// TODO: diagonal should have same animation as walk forward
// but doesn't seem to do that?
actor.getClass().getMovementSettings(actor).mPosition[0] = 1;
actor.getClass().getMovementSettings(actor).mPosition[1] = 0.1f;
// change the angle a bit, too
zTurn(actor, Ogre::Degree(mPathFinder.getZAngleToNext(pos.pos[0] + 1, pos.pos[1])));
}
}
else { //Not stuck, so reset things
mStuckTimer = 0;
mStuckPos = pos;
mLastDoorChecked = MWWorld::Ptr(); //Resets it, in case he gets stuck behind the door again
actor.getClass().getMovementSettings(actor).mPosition[1] = 1; //Just run forward
}
}
else {
actor.getClass().getMovementSettings(actor).mPosition[1] = 1; //Just run forward the rest of the time
}
zTurn(actor, Ogre::Degree(mPathFinder.getZAngleToNext(pos.pos[0], pos.pos[1])));
return false;
}
bool AiCombat::execute (const MWWorld::Ptr& actor,float duration)
{
//General description
if(!actor.getClass().getCreatureStats(actor).isHostile()
|| actor.getClass().getCreatureStats(actor).getHealth().getCurrent() <= 0)
return true;
if(mTarget.getClass().getCreatureStats(mTarget).isDead())
return true;
//Update every frame
if(mCombatMove)
{
mTimerCombatMove -= duration;
if( mTimerCombatMove <= 0)
{
mTimerCombatMove = 0;
mMovement.mPosition[1] = mMovement.mPosition[0] = 0;
mCombatMove = false;
}
}
actor.getClass().getMovementSettings(actor) = mMovement;
if (mRotate)
{
if (zTurn(actor, Ogre::Degree(mTargetAngle)))
mRotate = false;
}
mTimerAttack -= duration;
actor.getClass().getCreatureStats(actor).setAttackingOrSpell(mStrike);
float tReaction = 0.25f;
if(mTimerReact < tReaction)
{
mTimerReact += duration;
return false;
}
//Update with period = tReaction
mTimerReact = 0;
//actual attacking logic
//TODO: Some skills affect period of strikes.For berserk-like style period ~ 0.25f
float attackPeriod = 1.0f;
if(mReadyToAttack)
{
if(mTimerAttack <= -attackPeriod)
{
//TODO: should depend on time between 'start' to 'min attack'
//for better controlling of NPCs' attack strength.
//Also it seems that this time is different for slash/thrust/chop
mTimerAttack = 0.35f * static_cast<float>(rand())/RAND_MAX;
mStrike = true;
//say a provoking combat phrase
if (actor.getClass().isNpc())
{
const MWWorld::ESMStore &store = MWBase::Environment::get().getWorld()->getStore();
int chance = store.get<ESM::GameSetting>().find("iVoiceAttackOdds")->getInt();
int roll = std::rand()/ (static_cast<double> (RAND_MAX) + 1) * 100; // [0, 99]
if (roll < chance)
{
MWBase::Environment::get().getDialogueManager()->say(actor, "attack");
}
}
}
else if (mTimerAttack <= 0)
mStrike = false;
}
else
{
mTimerAttack = -attackPeriod;
mStrike = false;
}
const MWWorld::Class &cls = actor.getClass();
const ESM::Weapon *weapon = NULL;
MWMechanics::WeaponType weaptype;
float weapRange, weapSpeed = 1.0f;
actor.getClass().getCreatureStats(actor).setMovementFlag(CreatureStats::Flag_Run, true);
if (actor.getClass().hasInventoryStore(actor))
{
MWMechanics::DrawState_ state = actor.getClass().getCreatureStats(actor).getDrawState();
if (state == MWMechanics::DrawState_Spell || state == MWMechanics::DrawState_Nothing)
actor.getClass().getCreatureStats(actor).setDrawState(MWMechanics::DrawState_Weapon);
//Get weapon speed and range
MWWorld::ContainerStoreIterator weaponSlot =
MWMechanics::getActiveWeapon(cls.getCreatureStats(actor), cls.getInventoryStore(actor), &weaptype);
if (weaptype == WeapType_HandToHand)
{
const MWWorld::Store<ESM::GameSetting> &gmst =
MWBase::Environment::get().getWorld()->getStore().get<ESM::GameSetting>();
weapRange = gmst.find("fHandToHandReach")->getFloat();
}
else
{
weapon = weaponSlot->get<ESM::Weapon>()->mBase;
weapRange = weapon->mData.mReach;
weapSpeed = weapon->mData.mSpeed;
}
weapRange *= 100.0f;
}
else //is creature
{
weaptype = WeapType_HandToHand; //doesn't matter, should only reflect if it is melee or distant weapon
weapRange = 150; //TODO: use true attack range (the same problem in Creature::hit)
}
ESM::Position pos = actor.getRefData().getPosition();
float rangeMelee;
float rangeCloseUp;
bool distantCombat = false;
if (weaptype==WeapType_BowAndArrow || weaptype==WeapType_Crossbow || weaptype==WeapType_Thrown)
{
rangeMelee = 1000; // TODO: should depend on archer skill
rangeCloseUp = 0; //doesn't needed when attacking from distance
distantCombat = true;
}
else
{
rangeMelee = weapRange;
rangeCloseUp = 300;
}
Ogre::Vector3 vStart(pos.pos[0], pos.pos[1], pos.pos[2]);
ESM::Position targetPos = mTarget.getRefData().getPosition();
Ogre::Vector3 vDest(targetPos.pos[0], targetPos.pos[1], targetPos.pos[2]);
Ogre::Vector3 vDir = vDest - vStart;
float distBetween = vDir.length();
if(distBetween < rangeMelee || (distBetween <= rangeCloseUp && mFollowTarget) )
{
//Melee and Close-up combat
vDir.z = 0;
float dirLen = vDir.length();
mTargetAngle = Ogre::Radian( Ogre::Math::ACos(vDir.y / dirLen) * sgn(Ogre::Math::ASin(vDir.x / dirLen)) ).valueDegrees();
mRotate = true;
//bool LOS = MWBase::Environment::get().getWorld()->getLOS(actor, mTarget);
if (mFollowTarget && distBetween > rangeMelee)
{
//Close-up combat: just run up on target
mMovement.mPosition[1] = 1;
}
else
{
//Melee: stop running and attack
mMovement.mPosition[1] = 0;
// When attacking with a weapon, choose between slash, thrust or chop
if (actor.getClass().hasInventoryStore(actor))
chooseBestAttack(weapon, mMovement);
if(mMovement.mPosition[0] || mMovement.mPosition[1])
{
mTimerCombatMove = 0.1f + 0.1f * static_cast<float>(rand())/RAND_MAX;
mCombatMove = true;
}
else if(actor.getClass().isNpc() && (!distantCombat || (distantCombat && rangeMelee/5)))
{
//apply sideway movement (kind of dodging) with some probability
if(static_cast<float>(rand())/RAND_MAX < 0.25)
{
mMovement.mPosition[0] = static_cast<float>(rand())/RAND_MAX < 0.5? 1: -1;
mTimerCombatMove = 0.05f + 0.15f * static_cast<float>(rand())/RAND_MAX;
mCombatMove = true;
}
}
if(distantCombat && distBetween < rangeMelee/4)
{
mMovement.mPosition[1] = -1;
}
mReadyToAttack = true;
//only once got in melee combat, actor is allowed to use close-up shortcutting
mFollowTarget = true;
}
}
else
{
//target is at far distance: build path to target OR follow target (if previously actor had reached it once)
mFollowTarget = false;
buildNewPath(actor); //may fail to build a path, check before use
//delete visited path node
mPathFinder.checkPathCompleted(pos.pos[0],pos.pos[1],pos.pos[2]);
//if no new path leave mTargetAngle unchanged
if(!mPathFinder.getPath().empty())
{
//try shortcut
if(vDir.length() < mPathFinder.getDistToNext(pos.pos[0],pos.pos[1],pos.pos[2]) && MWBase::Environment::get().getWorld()->getLOS(actor, mTarget))
mTargetAngle = Ogre::Radian( Ogre::Math::ACos(vDir.y / vDir.length()) * sgn(Ogre::Math::ASin(vDir.x / vDir.length())) ).valueDegrees();
else
mTargetAngle = mPathFinder.getZAngleToNext(pos.pos[0], pos.pos[1]);
mRotate = true;
}
mMovement.mPosition[1] = 1;
mReadyToAttack = false;
}
if(distBetween > rangeMelee)
{
//special run attack; it shouldn't affect melee combat tactics
if(actor.getClass().getMovementSettings(actor).mPosition[1] == 1)
{
//check if actor can overcome the distance = distToTarget - attackerWeapRange
//less than in time of playing weapon anim from 'start' to 'hit' tags (t_swing)
//then start attacking
float speed1 = cls.getSpeed(actor);
float speed2 = mTarget.getClass().getSpeed(mTarget);
if(mTarget.getClass().getMovementSettings(mTarget).mPosition[0] == 0
&& mTarget.getClass().getMovementSettings(mTarget).mPosition[1] == 0)
speed2 = 0;
float s1 = distBetween - weapRange;
float t = s1/speed1;
float s2 = speed2 * t;
float t_swing = 0.17f/weapSpeed;//instead of 0.17 should be the time of playing weapon anim from 'start' to 'hit' tags
if (t + s2/speed1 <= t_swing)
{
mReadyToAttack = true;
if(mTimerAttack <= -attackPeriod)
{
mTimerAttack = 0.3f*static_cast<float>(rand())/RAND_MAX;
mStrike = true;
}
}
}
}
actor.getClass().getMovementSettings(actor) = mMovement;
return false;
}
bool MWMechanics::AiPackage::pathTo(const MWWorld::Ptr& actor, const ESM::Pathgrid::Point& dest, float duration, float destTolerance)
{
mTimer += duration; //Update timer
ESM::Position pos = actor.getRefData().getPosition(); //position of the actor
/// Stops the actor when it gets too close to a unloaded cell
//... At current time, this test is unnecessary. AI shuts down when actor is more than 7168
//... units from player, and exterior cells are 8192 units long and wide.
//... But AI processing distance may increase in the future.
if (isNearInactiveCell(pos))
{
actor.getClass().getMovementSettings(actor).mPosition[1] = 0;
return false;
}
// handle path building and shortcutting
ESM::Pathgrid::Point start = pos.pos;
float distToTarget = distance(start, dest);
bool isDestReached = (distToTarget <= destTolerance);
if (!isDestReached && mTimer > AI_REACTION_TIME)
{
bool wasShortcutting = mIsShortcutting;
bool destInLOS = false;
if (getTypeId() != TypeIdWander) // prohibit shortcuts for AiWander
mIsShortcutting = shortcutPath(start, dest, actor, &destInLOS); // try to shortcut first
if (!mIsShortcutting)
{
if (wasShortcutting || doesPathNeedRecalc(dest, actor.getCell())) // if need to rebuild path
{
mPathFinder.buildSyncedPath(start, dest, actor.getCell());
mRotateOnTheRunChecks = 3;
// give priority to go directly on target if there is minimal opportunity
if (destInLOS && mPathFinder.getPath().size() > 1)
{
// get point just before dest
std::list<ESM::Pathgrid::Point>::const_iterator pPointBeforeDest = mPathFinder.getPath().end();
--pPointBeforeDest;
--pPointBeforeDest;
// if start point is closer to the target then last point of path (excluding target itself) then go straight on the target
if (distance(start, dest) <= distance(dest, *pPointBeforeDest))
{
mPathFinder.clearPath();
mPathFinder.addPointToPath(dest);
}
}
}
if (!mPathFinder.getPath().empty()) //Path has points in it
{
ESM::Pathgrid::Point lastPos = mPathFinder.getPath().back(); //Get the end of the proposed path
if(distance(dest, lastPos) > 100) //End of the path is far from the destination
mPathFinder.addPointToPath(dest); //Adds the final destination to the path, to try to get to where you want to go
}
}
mTimer = 0;
}
if (isDestReached || mPathFinder.checkPathCompleted(pos.pos[0], pos.pos[1])) // if path is finished
{
// turn to destination point
zTurn(actor, getZAngleToPoint(start, dest));
smoothTurn(actor, getXAngleToPoint(start, dest), 0);
return true;
}
else
{
if (mRotateOnTheRunChecks == 0
|| isReachableRotatingOnTheRun(actor, *mPathFinder.getPath().begin())) // to prevent circling around a path point
{
actor.getClass().getMovementSettings(actor).mPosition[1] = 1; // move to the target
if (mRotateOnTheRunChecks > 0) mRotateOnTheRunChecks--;
}
// handle obstacles on the way
evadeObstacles(actor, duration, pos);
}
// turn to next path point by X,Z axes
zTurn(actor, mPathFinder.getZAngleToNext(pos.pos[0], pos.pos[1]));
smoothTurn(actor, mPathFinder.getXAngleToNext(pos.pos[0], pos.pos[1], pos.pos[2]), 0);
return false;
}
bool MWMechanics::AiPursue::execute (const MWWorld::Ptr& actor, float duration)
{
MWBase::World *world = MWBase::Environment::get().getWorld();
ESM::Position pos = actor.getRefData().getPosition();
Movement &movement = actor.getClass().getMovementSettings(actor);
const ESM::Cell *cell = actor.getCell()->getCell();
actor.getClass().getCreatureStats(actor).setMovementFlag(CreatureStats::Flag_Run, true);
MWWorld::Ptr player = world->getPlayerPtr();
if(cell->mData.mX != player.getCell()->getCell()->mData.mX)
{
int sideX = PathFinder::sgn(cell->mData.mX - player.getCell()->getCell()->mData.mX);
//check if actor is near the border of an inactive cell. If so, stop walking.
if(sideX * (pos.pos[0] - cell->mData.mX*ESM::Land::REAL_SIZE) >
sideX * (ESM::Land::REAL_SIZE/2.0f - 200.0f))
{
movement.mPosition[1] = 0;
return false;
}
}
if(cell->mData.mY != player.getCell()->getCell()->mData.mY)
{
int sideY = PathFinder::sgn(cell->mData.mY - player.getCell()->getCell()->mData.mY);
//check if actor is near the border of an inactive cell. If so, stop walking.
if(sideY * (pos.pos[1] - cell->mData.mY*ESM::Land::REAL_SIZE) >
sideY * (ESM::Land::REAL_SIZE/2.0f - 200.0f))
{
movement.mPosition[1] = 0;
return false;
}
}
// Big TODO: Sync this with current AiFollow. Move common code to a shared base class or helpers (applies to all AI packages, way too much duplicated code)
MWWorld::Ptr target = world->getPtr(mObjectId,false);
ESM::Position targetPos = target.getRefData().getPosition();
bool cellChange = cell->mData.mX != mCellX || cell->mData.mY != mCellY;
if(!mPathFinder.isPathConstructed() || cellChange || mPathFinder.checkPathCompleted(pos.pos[0], pos.pos[1], pos.pos[2]))
{
mCellX = cell->mData.mX;
mCellY = cell->mData.mY;
ESM::Pathgrid::Point dest;
dest.mX = targetPos.pos[0];
dest.mY = targetPos.pos[1];
dest.mZ = targetPos.pos[2];
ESM::Pathgrid::Point start;
start.mX = pos.pos[0];
start.mY = pos.pos[1];
start.mZ = pos.pos[2];
mPathFinder.buildPath(start, dest, actor.getCell(), true);
}
if((pos.pos[0]-targetPos.pos[0])*(pos.pos[0]-targetPos.pos[0])+
(pos.pos[1]-targetPos.pos[1])*(pos.pos[1]-targetPos.pos[1])+
(pos.pos[2]-targetPos.pos[2])*(pos.pos[2]-targetPos.pos[2]) < 100*100)
{
movement.mPosition[1] = 0;
MWWorld::Ptr target = world->getPtr(mObjectId,false);
MWWorld::Class::get(target).activate(target,actor).get()->execute(actor);
return true;
}
float zAngle = mPathFinder.getZAngleToNext(pos.pos[0], pos.pos[1]);
zTurn(actor, Ogre::Degree(zAngle));
MWWorld::Class::get(actor).getMovementSettings(actor).mPosition[1] = 1;
movement.mPosition[1] = 1;
return false;
}
bool AiTravel::execute (const MWWorld::Ptr& actor,float duration)
{
MWBase::World *world = MWBase::Environment::get().getWorld();
ESM::Position pos = actor.getRefData().getPosition();
Movement &movement = actor.getClass().getMovementSettings(actor);
const ESM::Cell *cell = actor.getCell()->getCell();
actor.getClass().getCreatureStats(actor).setMovementFlag(CreatureStats::Flag_Run, false);
MWWorld::Ptr player = world->getPlayerPtr();
if(cell->mData.mX != player.getCell()->getCell()->mData.mX)
{
int sideX = PathFinder::sgn(cell->mData.mX - player.getCell()->getCell()->mData.mX);
//check if actor is near the border of an inactive cell. If so, stop walking.
if(sideX * (pos.pos[0] - cell->mData.mX*ESM::Land::REAL_SIZE) >
sideX * (ESM::Land::REAL_SIZE/2.0f - 200.0f))
{
movement.mPosition[1] = 0;
return false;
}
}
if(cell->mData.mY != player.getCell()->getCell()->mData.mY)
{
int sideY = PathFinder::sgn(cell->mData.mY - player.getCell()->getCell()->mData.mY);
//check if actor is near the border of an inactive cell. If so, stop walking.
if(sideY * (pos.pos[1] - cell->mData.mY*ESM::Land::REAL_SIZE) >
sideY * (ESM::Land::REAL_SIZE/2.0f - 200.0f))
{
movement.mPosition[1] = 0;
return false;
}
}
bool cellChange = cell->mData.mX != mCellX || cell->mData.mY != mCellY;
if(!mPathFinder.isPathConstructed() || cellChange)
{
mCellX = cell->mData.mX;
mCellY = cell->mData.mY;
ESM::Pathgrid::Point dest;
dest.mX = mX;
dest.mY = mY;
dest.mZ = mZ;
ESM::Pathgrid::Point start;
start.mX = pos.pos[0];
start.mY = pos.pos[1];
start.mZ = pos.pos[2];
mPathFinder.buildPath(start, dest, actor.getCell(), true);
}
if(mPathFinder.checkPathCompleted(pos.pos[0], pos.pos[1], pos.pos[2]))
{
movement.mPosition[1] = 0;
return true;
}
zTurn(actor, Ogre::Degree(mPathFinder.getZAngleToNext(pos.pos[0], pos.pos[1])));
movement.mPosition[1] = 1;
return false;
}
bool MWMechanics::AiFollow::execute (const MWWorld::Ptr& actor,float duration)
{
const MWWorld::Ptr target = MWBase::Environment::get().getWorld()->searchPtr(mActorId, false); //The target to follow
if(target == MWWorld::Ptr()) return true; //Target doesn't exist
mTimer = mTimer + duration; //Update timer
mStuckTimer = mStuckTimer + duration; //Update stuck timer
mTotalTime = mTotalTime + duration; //Update total time following
ESM::Position pos = actor.getRefData().getPosition(); //position of the actor
if(!mAlwaysFollow) //Update if you only follow for a bit
{
if(mTotalTime > mDuration && mDuration != 0) //Check if we've run out of time
return true;
if((pos.pos[0]-mX)*(pos.pos[0]-mX) +
(pos.pos[1]-mY)*(pos.pos[1]-mY) +
(pos.pos[2]-mZ)*(pos.pos[2]-mZ) < 100*100) //Close-ish to final position
{
if(actor.getCell()->isExterior()) //Outside?
{
if(mCellId == "") //No cell to travel to
return true;
}
else
{
if(mCellId == actor.getCell()->getCell()->mName) //Cell to travel to
return true;
}
}
}
//Set the target desition from the actor
ESM::Pathgrid::Point dest;
dest.mX = target.getRefData().getPosition().pos[0];
dest.mY = target.getRefData().getPosition().pos[1];
dest.mZ = target.getRefData().getPosition().pos[2];
//Current position, for pathfilding stuff
ESM::Pathgrid::Point start;
start.mX = pos.pos[0];
start.mY = pos.pos[1];
start.mZ = pos.pos[2];
//Build the path to get to the destination
if(mPathFinder.getPath().empty())
mPathFinder.buildPath(start, dest, actor.getCell(), true);
//***********************
// Checks if you can't get to the end position at all
//***********************
if(mTimer > 0.25)
{
if(!mPathFinder.getPath().empty()) //Path has points in it
{
ESM::Pathgrid::Point lastPos = mPathFinder.getPath().back(); //Get the end of the proposed path
if((dest.mX - lastPos.mX)*(dest.mX - lastPos.mX)
+(dest.mY - lastPos.mY)*(dest.mY - lastPos.mY)
+(dest.mZ - lastPos.mZ)*(dest.mZ - lastPos.mZ)
> 100*100) //End of the path is far from the destination
mPathFinder.addPointToPath(dest); //Adds the final destination to the path, to try to get to where you want to go
}
mTimer = 0;
}
//************************
// Checks if you aren't moving; you're stuck
//************************
if(mStuckTimer>0.5) //Checks every half of a second
{
if((mStuckPos.pos[0] - pos.pos[0])*(mStuckPos.pos[0] - pos.pos[0])
+(mStuckPos.pos[1] - pos.pos[1])*(mStuckPos.pos[1] - pos.pos[1])
+(mStuckPos.pos[2] - pos.pos[2])*(mStuckPos.pos[2] - pos.pos[2]) < 100) //NPC is stuck
mPathFinder.buildPath(start, dest, actor.getCell(), true);
mStuckTimer = 0;
mStuckPos = pos;
}
//Checks if the path isn't over, turn tomards the direction that you're going
if(!mPathFinder.checkPathCompleted(pos.pos[0],pos.pos[1],pos.pos[2]))
{
zTurn(actor, Ogre::Degree(mPathFinder.getZAngleToNext(pos.pos[0], pos.pos[1])));
}
if((dest.mX - pos.pos[0])*(dest.mX - pos.pos[0])+(dest.mY - pos.pos[1])*(dest.mY - pos.pos[1])+(dest.mZ - pos.pos[2])*(dest.mZ - pos.pos[2])
< 100*100)
actor.getClass().getMovementSettings(actor).mPosition[1] = 0;
else
actor.getClass().getMovementSettings(actor).mPosition[1] = 1;
//Check if you're far away
if((dest.mX - start.mX)*(dest.mX - start.mX)
+(dest.mY - start.mY)*(dest.mY - start.mY)
+(dest.mZ - start.mZ)*(dest.mZ - start.mZ) > 1000*1000)
actor.getClass().getCreatureStats(actor).setMovementFlag(MWMechanics::CreatureStats::Flag_Run, true); //Make NPC run
else if((dest.mX - start.mX)*(dest.mX - start.mX) //Have a bit of a dead zone, otherwise npc will constantly flip between running and not when right on the edge of the running threshhold
+(dest.mY - start.mY)*(dest.mY - start.mY)
+(dest.mZ - start.mZ)*(dest.mZ - start.mZ) < 800*800)
actor.getClass().getCreatureStats(actor).setMovementFlag(MWMechanics::CreatureStats::Flag_Run, false); //make NPC walk
return false;
}
bool AiEscort::execute (const MWWorld::Ptr& actor,float duration)
{
// If AiEscort has ran for as long or longer then the duration specified
// and the duration is not infinite, the package is complete.
if(mDuration != 0)
{
MWWorld::TimeStamp current = MWBase::Environment::get().getWorld()->getTimeStamp();
unsigned int currentSecond = ((current.getHour() - int(current.getHour())) * 100);
if(currentSecond - mStartingSecond >= mDuration)
return true;
}
MWWorld::Ptr player = MWBase::Environment::get().getWorld()->getPlayerPtr();
ESM::Position pos = actor.getRefData().getPosition();
bool cellChange = actor.getCell()->mCell->mData.mX != mCellX || actor.getCell()->mCell->mData.mY != mCellY;
if(actor.getCell()->mCell->mData.mX != player.getCell()->mCell->mData.mX)
{
int sideX = sgn(actor.getCell()->mCell->mData.mX - player.getCell()->mCell->mData.mX);
// Check if actor is near the border of an inactive cell. If so, pause walking.
if(sideX * (pos.pos[0] - actor.getCell()->mCell->mData.mX * ESM::Land::REAL_SIZE) > sideX * (ESM::Land::REAL_SIZE /
2.0 - 200))
{
MWWorld::Class::get(actor).getMovementSettings(actor).mPosition[1] = 0;
return false;
}
}
if(actor.getCell()->mCell->mData.mY != player.getCell()->mCell->mData.mY)
{
int sideY = sgn(actor.getCell()->mCell->mData.mY - player.getCell()->mCell->mData.mY);
// Check if actor is near the border of an inactive cell. If so, pause walking.
if(sideY*(pos.pos[1] - actor.getCell()->mCell->mData.mY * ESM::Land::REAL_SIZE) > sideY * (ESM::Land::REAL_SIZE /
2.0 - 200))
{
MWWorld::Class::get(actor).getMovementSettings(actor).mPosition[1] = 0;
return false;
}
}
if(!mPathFinder.isPathConstructed() || cellChange)
{
mCellX = actor.getCell()->mCell->mData.mX;
mCellY = actor.getCell()->mCell->mData.mY;
ESM::Pathgrid::Point dest;
dest.mX = mX;
dest.mY = mY;
dest.mZ = mZ;
ESM::Pathgrid::Point start;
start.mX = pos.pos[0];
start.mY = pos.pos[1];
start.mZ = pos.pos[2];
mPathFinder.buildPath(start, dest, actor.getCell(), true);
}
if(mPathFinder.checkPathCompleted(pos.pos[0],pos.pos[1],pos.pos[2]))
{
MWWorld::Class::get(actor).getMovementSettings(actor).mPosition[1] = 0;
return true;
}
const MWWorld::Ptr follower = MWBase::Environment::get().getWorld()->getPtr(mActorId, false);
const float* const leaderPos = actor.getRefData().getPosition().pos;
const float* const followerPos = follower.getRefData().getPosition().pos;
double differenceBetween[3];
for (short counter = 0; counter < 3; counter++)
differenceBetween[counter] = (leaderPos[counter] - followerPos[counter]);
float distanceBetweenResult =
(differenceBetween[0] * differenceBetween[0]) + (differenceBetween[1] * differenceBetween[1]) + (differenceBetween[2] *
differenceBetween[2]);
if(distanceBetweenResult <= mMaxDist * mMaxDist)
{
float zAngle = mPathFinder.getZAngleToNext(pos.pos[0], pos.pos[1]);
zTurn(actor, Ogre::Degree(zAngle));
MWWorld::Class::get(actor).getMovementSettings(actor).mPosition[1] = 1;
mMaxDist = 470;
}
else
{
// Stop moving if the player is to far away
MWBase::Environment::get().getMechanicsManager()->playAnimationGroup(actor, "idle3", 0, 1);
MWWorld::Class::get(actor).getMovementSettings(actor).mPosition[1] = 0;
mMaxDist = 330;
}
return false;
}
void hummingBird::TurnRight(float amount)
{
zTurn(-amount);
}
void hummingBird::TurnLeft(float amount)
{
zTurn(amount);
}
/*
* Current AiCombat movement states (as of 0.29.0), ignoring the details of the
* attack states such as CombatMove, Strike and ReadyToAttack:
*
* +----(within strike range)----->attack--(beyond strike range)-->follow
* | | ^ | |
* | | | | |
* pursue<---(beyond follow range)-----+ +----(within strike range)---+ |
* ^ |
* | |
* +-------------------------(beyond follow range)--------------------+
*
*
* Below diagram is high level only, the code detail is a little different
* (but including those detail will just complicate the diagram w/o adding much)
*
* +----------(same)-------------->attack---------(same)---------->follow
* | |^^ |||
* | ||| |||
* | +--(same)-----------------+|+----------(same)------------+||
* | | | ||
* | | | (in range) ||
* | <---+ (too far) | ||
* pursue<-------------------------[door open]<-----+ ||
* ^^^ | ||
* ||| | ||
* ||+----------evade-----+ | ||
* || | [closed door] | ||
* |+----> maybe stuck, check --------------> back up, check door ||
* | ^ | ^ | ^ ||
* | | | | | | ||
* | | +---+ +---+ ||
* | +-------------------------------------------------------+|
* | |
* +---------------------------(same)---------------------------------+
*
* FIXME:
*
* The new scheme is way too complicated, should really be implemented as a
* proper state machine.
*
* TODO:
*
* Use the Observer Pattern to co-ordinate attacks, provide intelligence on
* whether the target was hit, etc.
*/
bool AiCombat::execute (const MWWorld::Ptr& actor, AiState& state, float duration)
{
// get or create temporary storage
AiCombatStorage& storage = state.get<AiCombatStorage>();
//General description
if(actor.getClass().getCreatureStats(actor).isDead())
return true;
MWWorld::Ptr target = MWBase::Environment::get().getWorld()->searchPtrViaActorId(mTargetActorId);
if (target.isEmpty())
return false;
if(!target.getRefData().getCount() || !target.getRefData().isEnabled() // Really we should be checking whether the target is currently registered
// with the MechanicsManager
|| target.getClass().getCreatureStats(target).isDead())
return true;
const MWWorld::Class& actorClass = actor.getClass();
MWBase::World* world = MWBase::Environment::get().getWorld();
//Update every frame
bool& combatMove = storage.mCombatMove;
float& timerCombatMove = storage.mTimerCombatMove;
MWMechanics::Movement& movement = storage.mMovement;
if(combatMove)
{
timerCombatMove -= duration;
if( timerCombatMove <= 0)
{
timerCombatMove = 0;
movement.mPosition[1] = movement.mPosition[0] = 0;
combatMove = false;
}
}
actorClass.getMovementSettings(actor) = movement;
actorClass.getMovementSettings(actor).mRotation[0] = 0;
actorClass.getMovementSettings(actor).mRotation[2] = 0;
if(movement.mRotation[2] != 0)
{
if(zTurn(actor, Ogre::Degree(movement.mRotation[2]))) movement.mRotation[2] = 0;
}
if(movement.mRotation[0] != 0)
{
if(smoothTurn(actor, Ogre::Degree(movement.mRotation[0]), 0)) movement.mRotation[0] = 0;
}
//TODO: Some skills affect period of strikes.For berserk-like style period ~ 0.25f
float attacksPeriod = 1.0f;
ESM::Weapon::AttackType attackType;
bool& attack = storage.mAttack;
bool& readyToAttack = storage.mReadyToAttack;
float& timerAttack = storage.mTimerAttack;
bool& minMaxAttackDurationInitialised = storage.mMinMaxAttackDurationInitialised;
float (&minMaxAttackDuration)[3][2] = storage.mMinMaxAttackDuration;
if(readyToAttack)
{
if (!minMaxAttackDurationInitialised)
{
// TODO: this must be updated when a different weapon is equipped
getMinMaxAttackDuration(actor, minMaxAttackDuration);
minMaxAttackDurationInitialised = true;
}
if (timerAttack < 0) attack = false;
timerAttack -= duration;
}
else
{
timerAttack = -attacksPeriod;
attack = false;
}
actorClass.getCreatureStats(actor).setAttackingOrSpell(attack);
float& actionCooldown = storage.mActionCooldown;
actionCooldown -= duration;
float& timerReact = storage.mTimerReact;
float tReaction = 0.25f;
if(timerReact < tReaction)
{
timerReact += duration;
return false;
}
//Update with period = tReaction
// Stop attacking if target is not seen
if (target.getClass().getCreatureStats(target).getMagicEffects().get(ESM::MagicEffect::Invisibility).getMagnitude() > 0
|| target.getClass().getCreatureStats(target).getMagicEffects().get(ESM::MagicEffect::Chameleon).getMagnitude() > 75)
{
movement.mPosition[1] = movement.mPosition[0] = 0;
return false; // TODO: run away instead of doing nothing
}
timerReact = 0;
const MWWorld::CellStore*& currentCell = storage.mCell;
bool cellChange = currentCell && (actor.getCell() != currentCell);
if(!currentCell || cellChange)
{
currentCell = actor.getCell();
}
MWRender::Animation* anim = MWBase::Environment::get().getWorld()->getAnimation(actor);
if (!anim) // shouldn't happen
return false;
actorClass.getCreatureStats(actor).setMovementFlag(CreatureStats::Flag_Run, true);
if (actionCooldown > 0)
return false;
float rangeAttack = 0;
float rangeFollow = 0;
boost::shared_ptr<Action>& currentAction = storage.mCurrentAction;
if (anim->upperBodyReady())
{
currentAction = prepareNextAction(actor, target);
actionCooldown = currentAction->getActionCooldown();
}
if (currentAction.get())
currentAction->getCombatRange(rangeAttack, rangeFollow);
// FIXME: consider moving this stuff to ActionWeapon::getCombatRange
const ESM::Weapon *weapon = NULL;
MWMechanics::WeaponType weaptype = WeapType_None;
float weapRange = 1.0f;
// Get weapon characteristics
if (actorClass.hasInventoryStore(actor))
{
// TODO: Check equipped weapon and equip a different one if we can't attack with it
// (e.g. no ammunition, or wrong type of ammunition equipped, etc. autoEquip is not very smart in this regard))
//Get weapon speed and range
MWWorld::ContainerStoreIterator weaponSlot =
MWMechanics::getActiveWeapon(actorClass.getCreatureStats(actor), actorClass.getInventoryStore(actor), &weaptype);
if (weaptype == WeapType_HandToHand)
{
static float fHandToHandReach =
world->getStore().get<ESM::GameSetting>().find("fHandToHandReach")->getFloat();
weapRange = fHandToHandReach;
}
else if (weaptype != WeapType_PickProbe && weaptype != WeapType_Spell && weaptype != WeapType_None)
{
// All other WeapTypes are actually weapons, so get<ESM::Weapon> is safe.
weapon = weaponSlot->get<ESM::Weapon>()->mBase;
weapRange = weapon->mData.mReach;
}
weapRange *= 100.0f;
}
else //is creature
{
weaptype = actorClass.getCreatureStats(actor).getDrawState() == DrawState_Spell ? WeapType_Spell : WeapType_HandToHand;
weapRange = 150.0f; //TODO: use true attack range (the same problem in Creature::hit)
}
bool distantCombat = false;
if (weaptype != WeapType_Spell)
{
// TODO: move to ActionWeapon
if (weaptype == WeapType_BowAndArrow || weaptype == WeapType_Crossbow || weaptype == WeapType_Thrown)
{
rangeAttack = 1000;
rangeFollow = 0; // not needed in ranged combat
distantCombat = true;
}
else
{
rangeAttack = weapRange;
rangeFollow = 300;
}
}
else
{
distantCombat = (rangeAttack > 500);
weapRange = 150.f;
}
float& strength = storage.mStrength;
// start new attack
if(readyToAttack)
{
if(timerAttack <= -attacksPeriod)
{
attack = true; // attack starts just now
if (!distantCombat) attackType = chooseBestAttack(weapon, movement);
else attackType = ESM::Weapon::AT_Chop; // cause it's =0
strength = OEngine::Misc::Rng::rollClosedProbability();
// Note: may be 0 for some animations
timerAttack = minMaxAttackDuration[attackType][0] +
(minMaxAttackDuration[attackType][1] - minMaxAttackDuration[attackType][0]) * strength;
//say a provoking combat phrase
if (actor.getClass().isNpc())
{
const MWWorld::ESMStore &store = world->getStore();
int chance = store.get<ESM::GameSetting>().find("iVoiceAttackOdds")->getInt();
if (OEngine::Misc::Rng::roll0to99() < chance)
{
MWBase::Environment::get().getDialogueManager()->say(actor, "attack");
}
}
}
}
/*
* Some notes on meanings of variables:
*
* rangeAttack:
*
* - Distance where attack using the actor's weapon is possible:
* longer for ranged weapons (obviously?) vs. melee weapons
* - Determined by weapon's reach parameter; hardcoded value
* for ranged weapon and for creatures
* - Once within this distance mFollowTarget is triggered
*
* rangeFollow:
*
* - Applies to melee weapons or hand to hand only (or creatures without
* weapons)
* - Distance a little further away than the actor's weapon reach
* i.e. rangeFollow > rangeAttack for melee weapons
* - Hardcoded value (0 for ranged weapons)
* - Once the target gets beyond this distance mFollowTarget is cleared
* and a path to the target needs to be found
*
* mFollowTarget:
*
* - Once triggered, the actor follows the target with LOS shortcut
* (the shortcut really only applies to cells where pathgrids are
* available, since the default path without pathgrids is direct to
* target even if LOS is not achieved)
*/
ESM::Position pos = actor.getRefData().getPosition();
Ogre::Vector3 vActorPos(pos.pos);
Ogre::Vector3 vTargetPos(target.getRefData().getPosition().pos);
Ogre::Vector3 vDirToTarget = vTargetPos - vActorPos;
float distToTarget = vDirToTarget.length();
Ogre::Vector3& lastActorPos = storage.mLastActorPos;
bool& followTarget = storage.mFollowTarget;
bool isStuck = false;
float speed = 0.0f;
if(movement.mPosition[1] && (lastActorPos - vActorPos).length() < (speed = actorClass.getSpeed(actor)) * tReaction / 2)
isStuck = true;
lastActorPos = vActorPos;
// check if actor can move along z-axis
bool canMoveByZ = (actorClass.canSwim(actor) && world->isSwimming(actor))
|| world->isFlying(actor);
// for distant combat we should know if target is in LOS even if distToTarget < rangeAttack
bool inLOS = distantCombat ? world->getLOS(actor, target) : true;
// can't fight if attacker can't go where target is. E.g. A fish can't attack person on land.
if (distToTarget >= rangeAttack
&& !actorClass.isNpc() && !MWMechanics::isEnvironmentCompatible(actor, target))
{
// TODO: start fleeing?
movement.mPosition[0] = 0;
movement.mPosition[1] = 0;
movement.mPosition[2] = 0;
readyToAttack = false;
actorClass.getCreatureStats(actor).setAttackingOrSpell(false);
return false;
}
// (within attack dist) || (not quite attack dist while following)
if(inLOS && (distToTarget < rangeAttack || (distToTarget <= rangeFollow && followTarget && !isStuck)))
{
//Melee and Close-up combat
// getXAngleToDir determines vertical angle to target:
// if actor can move along z-axis it will control movement dir
// if can't - it will control correct aiming.
// note: in getZAngleToDir if we preserve dir.z then horizontal angle can be inaccurate
if (distantCombat)
{
Ogre::Vector3& lastTargetPos = storage.mLastTargetPos;
Ogre::Vector3 vAimDir = AimDirToMovingTarget(actor, target, lastTargetPos, tReaction, weaptype, strength);
lastTargetPos = vTargetPos;
movement.mRotation[0] = getXAngleToDir(vAimDir);
movement.mRotation[2] = getZAngleToDir(vAimDir);
}
else
{
movement.mRotation[0] = getXAngleToDir(vDirToTarget, distToTarget);
movement.mRotation[2] = getZAngleToDir(vDirToTarget);
}
// (not quite attack dist while following)
if (followTarget && distToTarget > rangeAttack)
{
//Close-up combat: just run up on target
movement.mPosition[1] = 1;
}
else // (within attack dist)
{
if(movement.mPosition[0] || movement.mPosition[1])
{
timerCombatMove = 0.1f + 0.1f * OEngine::Misc::Rng::rollClosedProbability();
combatMove = true;
}
// only NPCs are smart enough to use dodge movements
else if(actorClass.isNpc() && (!distantCombat || (distantCombat && distToTarget < rangeAttack/2)))
{
//apply sideway movement (kind of dodging) with some probability
if (OEngine::Misc::Rng::rollClosedProbability() < 0.25)
{
movement.mPosition[0] = OEngine::Misc::Rng::rollProbability() < 0.5 ? 1.0f : -1.0f;
timerCombatMove = 0.05f + 0.15f * OEngine::Misc::Rng::rollClosedProbability();
combatMove = true;
}
}
if(distantCombat && distToTarget < rangeAttack/4)
{
movement.mPosition[1] = -1;
}
readyToAttack = true;
//only once got in melee combat, actor is allowed to use close-up shortcutting
followTarget = true;
}
}
else // remote pathfinding
{
bool preferShortcut = false;
if (!distantCombat) inLOS = world->getLOS(actor, target);
// check if shortcut is available
bool& forceNoShortcut = storage.mForceNoShortcut;
ESM::Position& shortcutFailPos = storage.mShortcutFailPos;
if(inLOS && (!isStuck || readyToAttack)
&& (!forceNoShortcut || (Ogre::Vector3(shortcutFailPos.pos) - vActorPos).length() >= PATHFIND_SHORTCUT_RETRY_DIST))
{
if(speed == 0.0f) speed = actorClass.getSpeed(actor);
// maximum dist before pit/obstacle for actor to avoid them depending on his speed
float maxAvoidDist = tReaction * speed + speed / MAX_VEL_ANGULAR.valueRadians() * 2; // *2 - for reliability
preferShortcut = checkWayIsClear(vActorPos, vTargetPos, Ogre::Vector3(vDirToTarget.x, vDirToTarget.y, 0).length() > maxAvoidDist*1.5? maxAvoidDist : maxAvoidDist/2);
}
// don't use pathgrid when actor can move in 3 dimensions
if(canMoveByZ) preferShortcut = true;
if(preferShortcut)
{
if (canMoveByZ)
movement.mRotation[0] = getXAngleToDir(vDirToTarget, distToTarget);
movement.mRotation[2] = getZAngleToDir(vDirToTarget);
forceNoShortcut = false;
shortcutFailPos.pos[0] = shortcutFailPos.pos[1] = shortcutFailPos.pos[2] = 0;
mPathFinder.clearPath();
}
else // if shortcut failed stick to path grid
{
if(!isStuck && shortcutFailPos.pos[0] == 0.0f && shortcutFailPos.pos[1] == 0.0f && shortcutFailPos.pos[2] == 0.0f)
{
forceNoShortcut = true;
shortcutFailPos = pos;
}
followTarget = false;
buildNewPath(actor, target); //may fail to build a path, check before use
//delete visited path node
mPathFinder.checkPathCompleted(pos.pos[0],pos.pos[1]);
// This works on the borders between the path grid and areas with no waypoints.
if(inLOS && mPathFinder.getPath().size() > 1)
{
// get point just before target
std::list<ESM::Pathgrid::Point>::const_iterator pntIter = --mPathFinder.getPath().end();
--pntIter;
Ogre::Vector3 vBeforeTarget(PathFinder::MakeOgreVector3(*pntIter));
// if current actor pos is closer to target then last point of path (excluding target itself) then go straight on target
if(distToTarget <= (vTargetPos - vBeforeTarget).length())
{
movement.mRotation[2] = getZAngleToDir(vDirToTarget);
preferShortcut = true;
}
}
// if there is no new path, then go straight on target
if(!preferShortcut)
{
if(!mPathFinder.getPath().empty())
movement.mRotation[2] = mPathFinder.getZAngleToNext(pos.pos[0], pos.pos[1]);
else
movement.mRotation[2] = getZAngleToDir(vDirToTarget);
}
}
movement.mPosition[1] = 1;
if (readyToAttack)
{
// to stop possible sideway moving after target moved out of attack range
combatMove = true;
timerCombatMove = 0;
}
readyToAttack = false;
}
if(!isStuck && distToTarget > rangeAttack && !distantCombat)
{
//special run attack; it shouldn't affect melee combat tactics
if(actorClass.getMovementSettings(actor).mPosition[1] == 1)
{
/* check if actor can overcome the distance = distToTarget - attackerWeapRange
less than in time of swinging with weapon (t_swing), then start attacking
*/
float speed1 = actorClass.getSpeed(actor);
float speed2 = target.getClass().getSpeed(target);
if(target.getClass().getMovementSettings(target).mPosition[0] == 0
&& target.getClass().getMovementSettings(target).mPosition[1] == 0)
speed2 = 0;
float s1 = distToTarget - weapRange;
float t = s1/speed1;
float s2 = speed2 * t;
float t_swing =
minMaxAttackDuration[ESM::Weapon::AT_Thrust][0] +
(minMaxAttackDuration[ESM::Weapon::AT_Thrust][1] - minMaxAttackDuration[ESM::Weapon::AT_Thrust][0]) * OEngine::Misc::Rng::rollClosedProbability();
if (t + s2/speed1 <= t_swing)
{
readyToAttack = true;
if(timerAttack <= -attacksPeriod)
{
timerAttack = t_swing;
attack = true;
}
}
}
}
// NOTE: This section gets updated every tReaction, which is currently hard
// coded at 250ms or 1/4 second
//
// TODO: Add a parameter to vary DURATION_SAME_SPOT?
if((distToTarget > rangeAttack || followTarget) &&
mObstacleCheck.check(actor, tReaction)) // check if evasive action needed
{
// probably walking into another NPC TODO: untested in combat situation
// TODO: diagonal should have same animation as walk forward
// but doesn't seem to do that?
actor.getClass().getMovementSettings(actor).mPosition[0] = 1;
actor.getClass().getMovementSettings(actor).mPosition[1] = 0.1f;
// change the angle a bit, too
if(mPathFinder.isPathConstructed())
zTurn(actor, Ogre::Degree(mPathFinder.getZAngleToNext(pos.pos[0] + 1, pos.pos[1])));
if(followTarget)
followTarget = false;
// FIXME: can fool actors to stay behind doors, etc.
// Related to Bug#1102 and to some degree #1155 as well
}
return false;
}
bool AiFollow::execute (const MWWorld::Ptr& actor, CharacterController& characterController, AiState& state, float duration)
{
MWWorld::Ptr target = getTarget();
if (target.isEmpty() || !target.getRefData().getCount() || !target.getRefData().isEnabled() // Really we should be checking whether the target is currently registered
// with the MechanicsManager
)
return false; // Target is not here right now, wait for it to return
actor.getClass().getCreatureStats(actor).setDrawState(DrawState_Nothing);
AiFollowStorage& storage = state.get<AiFollowStorage>();
// AiFollow requires the target to be in range and within sight for the initial activation
if (!mActive)
{
storage.mTimer -= duration;
if (storage.mTimer < 0)
{
if ((actor.getRefData().getPosition().asVec3() - target.getRefData().getPosition().asVec3()).length2()
< 500*500
&& MWBase::Environment::get().getWorld()->getLOS(actor, target))
mActive = true;
storage.mTimer = 0.5f;
}
}
if (!mActive)
return false;
ESM::Position pos = actor.getRefData().getPosition(); //position of the actor
float followDistance = 180;
// When there are multiple actors following the same target, they form a group with each group member at 180*(i+1) distance to the target
int i=0;
std::list<int> followers = MWBase::Environment::get().getMechanicsManager()->getActorsFollowingIndices(target);
followers.sort();
for (std::list<int>::iterator it = followers.begin(); it != followers.end(); ++it)
{
if (*it == mFollowIndex)
followDistance *= (i+1);
++i;
}
if(!mAlwaysFollow) //Update if you only follow for a bit
{
//Check if we've run out of time
if (mRemainingDuration != 0)
{
mRemainingDuration -= duration;
if (duration <= 0)
return true;
}
if((pos.pos[0]-mX)*(pos.pos[0]-mX) +
(pos.pos[1]-mY)*(pos.pos[1]-mY) +
(pos.pos[2]-mZ)*(pos.pos[2]-mZ) < followDistance*followDistance) //Close-ish to final position
{
if(actor.getCell()->isExterior()) //Outside?
{
if(mCellId == "") //No cell to travel to
return true;
}
else
{
if(mCellId == actor.getCell()->getCell()->mName) //Cell to travel to
return true;
}
}
}
//Set the target destination from the actor
ESM::Pathgrid::Point dest = target.getRefData().getPosition().pos;
float dist = distance(dest, pos.pos[0], pos.pos[1], pos.pos[2]);
const float threshold = 10;
if (storage.mMoving) //Stop when you get close
storage.mMoving = (dist > followDistance);
else
storage.mMoving = (dist > followDistance + threshold);
if(!storage.mMoving)
{
actor.getClass().getMovementSettings(actor).mPosition[1] = 0;
// turn towards target anyway
float directionX = target.getRefData().getPosition().pos[0] - actor.getRefData().getPosition().pos[0];
float directionY = target.getRefData().getPosition().pos[1] - actor.getRefData().getPosition().pos[1];
zTurn(actor, std::atan2(directionX,directionY), osg::DegreesToRadians(5.f));
}
else
{
pathTo(actor, dest, duration); //Go to the destination
}
//Check if you're far away
if(dist > 450)
actor.getClass().getCreatureStats(actor).setMovementFlag(MWMechanics::CreatureStats::Flag_Run, true); //Make NPC run
else if(dist < 325) //Have a bit of a dead zone, otherwise npc will constantly flip between running and not when right on the edge of the running threshhold
actor.getClass().getCreatureStats(actor).setMovementFlag(MWMechanics::CreatureStats::Flag_Run, false); //make NPC walk
return false;
}
bool MWMechanics::AiFollow::execute (const MWWorld::Ptr& actor,float duration)
{
const MWWorld::Ptr target = MWBase::Environment::get().getWorld()->getPtr(mActorId, false);
mTimer = mTimer + duration;
mStuckTimer = mStuckTimer + duration;
mTotalTime = mTotalTime + duration;
ESM::Position pos = actor.getRefData().getPosition();
if(mTotalTime > mDuration && mDuration != 0)
return true;
if((pos.pos[0]-mX)*(pos.pos[0]-mX) +
(pos.pos[1]-mY)*(pos.pos[1]-mY) +
(pos.pos[2]-mZ)*(pos.pos[2]-mZ) < 100*100)
{
if(actor.getCell()->isExterior())
{
if(mCellId == "")
return true;
}
else
{
if(mCellId == actor.getCell()->mCell->mName)
return true;
}
}
ESM::Pathgrid::Point dest;
dest.mX = target.getRefData().getPosition().pos[0];
dest.mY = target.getRefData().getPosition().pos[1];
dest.mZ = target.getRefData().getPosition().pos[2];
ESM::Pathgrid::Point start;
start.mX = pos.pos[0];
start.mY = pos.pos[1];
start.mZ = pos.pos[2];
if(mPathFinder.getPath().empty())
mPathFinder.buildPath(start, dest, actor.getCell(), true);
if(mTimer > 0.25)
{
if(!mPathFinder.getPath().empty())
{
ESM::Pathgrid::Point lastPos = mPathFinder.getPath().back();
if((dest.mX - lastPos.mX)*(dest.mX - lastPos.mX)
+(dest.mY - lastPos.mY)*(dest.mY - lastPos.mY)
+(dest.mZ - lastPos.mZ)*(dest.mZ - lastPos.mZ)
> 100*100)
mPathFinder.addPointToPath(dest);
}
mTimer = 0;
}
if(mStuckTimer>0.5)
{
if((mStuckPos.pos[0] - pos.pos[0])*(mStuckPos.pos[0] - pos.pos[0])
+(mStuckPos.pos[1] - pos.pos[1])*(mStuckPos.pos[1] - pos.pos[1])
+(mStuckPos.pos[2] - pos.pos[2])*(mStuckPos.pos[2] - pos.pos[2]) < 100) //NPC is stuck
mPathFinder.buildPath(start, dest, actor.getCell(), true);
mStuckTimer = 0;
mStuckPos = pos;
}
if(!mPathFinder.checkPathCompleted(pos.pos[0],pos.pos[1],pos.pos[2]))
{
zTurn(actor, Ogre::Degree(mPathFinder.getZAngleToNext(pos.pos[0], pos.pos[1])));
}
if((dest.mX - pos.pos[0])*(dest.mX - pos.pos[0])+(dest.mY - pos.pos[1])*(dest.mY - pos.pos[1])+(dest.mZ - pos.pos[2])*(dest.mZ - pos.pos[2])
< 100*100)
actor.getClass().getMovementSettings(actor).mPosition[1] = 0;
else
actor.getClass().getMovementSettings(actor).mPosition[1] = 1;
return false;
}
