void CNPC_Ichthyosaur::DragVictim( float moveDist )
{
Vector mins, maxs;
float width;
mins = WorldAlignMins();
maxs = WorldAlignMaxs();
width = ( maxs.y - mins.y ) * 0.5f;
Vector forward, up;
GetVectors( &forward, NULL, &up );
Vector newPos = GetAbsOrigin() + ( (forward+(up*0.25f)) * ( moveDist + width + DRAG_OFFSET ) );
trace_t tr;
AI_TraceEntity( this, m_pVictim->GetAbsOrigin(), newPos, MASK_NPCSOLID, &tr );
if ( ( tr.fraction == 1.0f ) && ( tr.m_pEnt != this ) )
{
UTIL_SetOrigin( m_pVictim, tr.endpos );
}
else
{
ReleaseVictim();
}
}
//------------------------------------------------------------------------------
// Purpose :
// Input :
// Output :
//------------------------------------------------------------------------------
Vector CAI_BaseFlyingBot::VelocityToAvoidObstacles(float flInterval)
{
// --------------------------------
// Avoid banging into stuff
// --------------------------------
trace_t tr;
Vector vTravelDir = m_vCurrentVelocity*flInterval;
Vector endPos = GetAbsOrigin() + vTravelDir;
AI_TraceEntity( this, GetAbsOrigin(), endPos, GetAITraceMask()|CONTENTS_WATER, &tr );
if (tr.fraction != 1.0)
{
// Bounce off in normal
Vector vBounce = tr.plane.normal * 0.5 * m_vCurrentVelocity.Length();
return (vBounce);
}
// --------------------------------
// Try to remain above the ground.
// --------------------------------
float flMinGroundDist = MinGroundDist();
AI_TraceLine(GetAbsOrigin(), GetAbsOrigin() + Vector(0, 0, -flMinGroundDist),
GetAITraceMask_BrushOnly()|CONTENTS_WATER, this, COLLISION_GROUP_NONE, &tr);
if (tr.fraction < 1)
{
// Clamp veloctiy
if (tr.fraction < 0.1)
{
tr.fraction = 0.1;
}
return Vector(0, 0, 50/tr.fraction);
}
return vec3_origin;
}
//------------------------------------------------------------------------------
// Purpose :
// Input :
// Output :
//------------------------------------------------------------------------------
float CNPC_CombineDropship::GetAltitude( void )
{
trace_t tr;
Vector vecBottom = GetAbsOrigin();
// Uneven terrain causes us problems, so trace our box down
AI_TraceEntity( this, vecBottom, vecBottom - Vector(0,0,4096), MASK_SHOT, &tr );
float flAltitude = ( 4096 * tr.fraction );
//Msg(" Altitude: %.3f\n", flAltitude );
return flAltitude;
}
//------------------------------------------------------------------------------
// Purpose : Is cover node valid
// Input :
// Output :
//------------------------------------------------------------------------------
bool CAI_BaseNPC::IsValidCover( const Vector &vecCoverLocation, CAI_Hint const *pHint )
{
// firstly, limit choices to hint groups
string_t iszHint = GetHintGroup();
char *pszHint = (char *)STRING(iszHint);
if ((iszHint != NULL_STRING) && (pszHint[0] != '\0'))
{
if (!pHint || pHint->GetGroup() != GetHintGroup())
{
return false;
}
}
/*
// If I'm in a squad don't pick cover node it other squad member
// is already nearby
if (m_pSquad)
{
return m_pSquad->IsValidCover( vecCoverLocation, pHint );
}
*/
// UNDONE: Do we really need this test?
// ----------------------------------------------------------------
// Make sure my hull can fit at this node before accepting it.
// Could be another NPC there or it could be blocked
// ----------------------------------------------------------------
// FIXME: shouldn't this see that if I crouch behind it it'll be safe?
Vector startPos = vecCoverLocation;
startPos.z -= GetHullMins().z; // Move hull bottom up to node
Vector endPos = startPos;
endPos.z += 0.01;
trace_t tr;
AI_TraceEntity( this, vecCoverLocation, endPos, MASK_NPCSOLID, &tr );
if (tr.startsolid)
{
return false;
}
return true;
}
