// Test for un-jumpable height change, or unrecoverable fall
bool CCSBot::IsStraightLinePathWalkable(const Vector *goal) const
{
// this is causing hang-up problems when crawling thru ducts/windows that drop off into rooms (they fail the "falling" check)
return true;
const float inc = GenerationStepSize;
Vector feet = pev->origin;
Vector dir = *goal - feet;
float length = dir.NormalizeInPlace();
float lastGround;
//if (!GetSimpleGroundHeight(&pev->origin, &lastGround))
// return false;
lastGround = feet.z;
float along = 0.0f;
Vector pos;
float ground;
bool done = false;
while (!done)
{
along += inc;
if (along > length)
{
along = length;
done = true;
}
// compute step along path
pos = feet + along * dir;
pos.z += HalfHumanHeight;
if (!GetSimpleGroundHeight(&pos, &ground))
return false;
// check for falling
if (ground - lastGround < -StepHeight)
return false;
// check for unreachable jump
// use slightly shorter jump limit, to allow for some fudge room
if (ground - lastGround > JumpHeight)
return false;
lastGround = ground;
}
return true;
}
// Find "simple" ground height, treating current nav area as part of the floor
bool CHostageImprov::__MAKE_VHOOK(GetSimpleGroundHeightWithFloor)(const Vector *pos, float *height, Vector *normal)
{
if (GetSimpleGroundHeight(pos, height, normal))
{
// our current nav area also serves as a ground polygon
if (m_lastKnownArea != NULL && m_lastKnownArea->IsOverlapping(pos))
*height = Q_max((*height), m_lastKnownArea->GetZ(pos));
return true;
}
return false;
}
// Update the "looking around" behavior.
void CCSBot::UpdateLookAround(bool updateNow)
{
// check if looking around has been inhibited
// Moved inhibit to allow high priority enemy lookats to still occur
if (gpGlobals->time < m_inhibitLookAroundTimestamp)
return;
const float recentThreatTime = 0.25f; // 1.0f;
// Unless we can hear them moving, in which case look towards the noise
if (!IsEnemyVisible())
{
const float noiseStartleRange = 1000.0f;
if (CanHearNearbyEnemyGunfire(noiseStartleRange))
{
Vector spot = m_noisePosition;
spot.z += HalfHumanHeight;
SetLookAt("Check dangerous noise", &spot, PRIORITY_HIGH, recentThreatTime);
InhibitLookAround(RANDOM_FLOAT(2.0f, 4.0f));
return;
}
}
// If we recently saw an enemy, look towards where we last saw them
if (!IsLookingAtSpot(PRIORITY_MEDIUM) && gpGlobals->time - m_lastSawEnemyTimestamp < recentThreatTime)
{
ClearLookAt();
Vector spot = m_lastEnemyPosition;
// find enemy position on the ground
if (GetSimpleGroundHeight(&m_lastEnemyPosition, &spot.z))
{
spot.z += HalfHumanHeight;
SetLookAt("Last Enemy Position", &spot, PRIORITY_MEDIUM, RANDOM_FLOAT(2.0f, 3.0f), true);
return;
}
}
// Look at nearby enemy noises
if (UpdateLookAtNoise())
return;
if (IsNotMoving())
{
// if we're sniping, zoom in to watch our approach points
if (IsUsingSniperRifle())
{
// low skill bots don't pre-zoom
if (GetProfile()->GetSkill() > 0.4f)
{
if (!IsViewMoving())
{
float range = ComputeWeaponSightRange();
AdjustZoom(range);
}
else
{
// zoom out
if (GetZoomLevel() != NO_ZOOM)
SecondaryAttack();
}
}
}
if (m_lastKnownArea == NULL)
return;
if (gpGlobals->time < m_lookAroundStateTimestamp)
return;
// if we're sniping, switch look-at spots less often
if (IsUsingSniperRifle())
m_lookAroundStateTimestamp = gpGlobals->time + RANDOM_FLOAT(5.0f, 10.0f);
else
m_lookAroundStateTimestamp = gpGlobals->time + RANDOM_FLOAT(1.0f, 2.0f);
if (m_approachPointCount == 0)
{
ClearLookAt();
return;
}
int which = RANDOM_LONG(0, m_approachPointCount - 1);
Vector spot = m_approachPoint[ which ];
// don't look at the floor, look roughly at chest level
// TODO: If this approach point is very near, this will cause us to aim up in the air if were crouching
spot.z += HalfHumanHeight;
SetLookAt("Approach Point (Hiding)", &spot, PRIORITY_LOW);
return;
}
// Glance at "encouter spots" as we move past them
if (m_spotEncounter)
{
// Check encounter spots
if (!IsSafe() && !IsLookingAtSpot(PRIORITY_LOW))
{
// allow a short time to look where we're going
if (gpGlobals->time < m_spotCheckTimestamp)
return;
// TODO: Use skill parameter instead of accuracy
// lower skills have exponentially longer delays
float_precision asleep = (1.0f - GetProfile()->GetSkill());
asleep *= asleep;
asleep *= asleep;
m_spotCheckTimestamp = gpGlobals->time + asleep * RANDOM_FLOAT(10.0f, 30.0f);
// figure out how far along the path segment we are
Vector delta = m_spotEncounter->path.to - m_spotEncounter->path.from;
float_precision length = delta.Length();
float adx = float(Q_abs(int64(delta.x)));
float ady = float(Q_abs(int64(delta.y)));
float_precision t;
if (adx > ady)
t = (pev->origin.x - m_spotEncounter->path.from.x) / delta.x;
else
t = (pev->origin.y - m_spotEncounter->path.from.y) / delta.y;
// advance parameter a bit so we "lead" our checks
const float leadCheckRange = 50.0f;
t += leadCheckRange / length;
if (t < 0.0f)
t = 0.0f;
else if (t > 1.0f)
t = 1.0f;
// collect the unchecked spots so far
const int MAX_DANGER_SPOTS = 8;
HidingSpot *dangerSpot[MAX_DANGER_SPOTS];
int dangerSpotCount = 0;
int dangerIndex = 0;
const float checkTime = 10.0f;
const SpotOrder *spotOrder;
for (SpotOrderList::iterator iter = m_spotEncounter->spotList.begin(); iter != m_spotEncounter->spotList.end(); ++iter)
{
spotOrder = &(*iter);
// if we have seen this spot recently, we don't need to look at it
if (gpGlobals->time - GetHidingSpotCheckTimestamp(spotOrder->spot) <= checkTime)
continue;
if (spotOrder->t > t)
break;
dangerSpot[ dangerIndex++ ] = spotOrder->spot;
if (dangerIndex >= MAX_DANGER_SPOTS)
dangerIndex = 0;
if (dangerSpotCount < MAX_DANGER_SPOTS)
++dangerSpotCount;
}
if (dangerSpotCount)
{
// pick one of the spots at random
int which = RANDOM_LONG(0, dangerSpotCount - 1);
const Vector *checkSpot = dangerSpot[ which ]->GetPosition();
Vector pos = *checkSpot;
pos.z += HalfHumanHeight;
// glance at the spot for minimum time
SetLookAt("Encounter Spot", &pos, PRIORITY_LOW, 0, true, 10.0f);
// immediately mark it as "checked", so we don't check it again
// if we get distracted before we check it - that's the way it goes
SetHidingSpotCheckTimestamp(dangerSpot[which]);
}
}
}
}