virtual void ProcessEvent( EFlowEvent event, SActivationInfo *pActInfo )
{
switch (event)
{
case eFE_Activate:
{
IActor* pActor = GetAIActor(pActInfo);
if (!pActor)
break;
IEntity* pEnt = pActor->GetEntity();
if (!pEnt)
break;
HSCRIPTFUNCTION func = 0;
int ret = 0;
IScriptTable* pTable = pEnt->GetScriptTable();
if (!pTable)
break;
if (IsPortActive(pActInfo, 1) && pTable->GetValue("GrabObject", func))
{
IEntity* pObj = gEnv->pEntitySystem->GetEntity( GetPortEntityId(pActInfo, 0) );
if (pObj)
{
IScriptTable* pObjTable = pObj->GetScriptTable();
Script::CallReturn(gEnv->pScriptSystem, func, pTable, pObjTable, ret);
}
ActivateOutput(pActInfo, 0, ret);
}
else if (IsPortActive(pActInfo, 2) && pTable->GetValue("DropObject", func))
{
bool bThrow = GetPortBool(pActInfo, 3);
Script::CallReturn(gEnv->pScriptSystem, func, pTable, bThrow, ret);
ActivateOutput(pActInfo, 0, ret);
}
if (pTable->GetValue("GetGrabbedObject", func))
{
ScriptHandle sH(0);
Script::CallReturn(gEnv->pScriptSystem, func, pTable, sH);
ActivateOutput(pActInfo, 1, EntityId(sH.n));
}
if(func)
gEnv->pScriptSystem->ReleaseFunc(func);
break;
}
}
}
void loop() {
lBreak();
sM();
sE();
sR();
sR();
sY();
wBreak();
sC();
sH();
sR();
sI();
sS();
sT();
sM();
sA();
sS();
lBreak();
}
/**
Calculates the segments joining nav polygons at a link. For example, the walk link
between two polygons will contain the edge segment where they meet. Note that this
function implicitly calculates whether there is a link between two polygons, since
that is dependent on whether or not an appropriate edge segment can be found.
@param s1 One of the 2D endpoints of the source edge in the plane
@param s2 The other 2D endpoint of the source edge in the plane
@param d1 One of the 2D endpoints of the destination edge in the plane
@param d2 The other 2D endpoint of the destination edge in the plane
@param xOverlap The horizontal overlap interval between the 2D edges in the plane
*/
NavMeshGenerator::LinkSegments
NavMeshGenerator::calculate_link_segments(const Vector2d& s1, const Vector2d& s2, const Vector2d& d1, const Vector2d& d2,
const Interval& xOverlap) const
{
LinkSegments linkSegments;
// Calculate the line equations yS = mS.x + cS and yD = mD.x + cD.
assert(fabs(s2.x - s1.x) > EPSILON);
assert(fabs(d2.x - d1.x) > EPSILON);
double mS = (s2.y - s1.y) / (s2.x - s1.x);
double mD = (d2.y - d1.y) / (d2.x - d1.x);
double cS = s1.y - mS * s1.x;
double cD = d1.y - mD * d1.x;
double deltaM = mD - mS;
double deltaC = cD - cS;
if(fabs(deltaM) > EPSILON)
{
// If the gradients of the source and destination edges are different, then we get
// a combination of step up/step down links.
// We want to find:
// (a) The point walkX at which yD = yS
// (b) The point stepUpX at which yD - yS = MAX_HEIGHT_DIFFERENCE (this is the furthest point at which you can step up)
// (c) The point stepDownX at which yS - yD = MAX_HEIGHT_DIFFERENCE (this is the furthest point at which you can step down)
// (a) deltaM . walkX + deltaC = 0
double walkX = -deltaC / deltaM;
// (b) deltaM . stepUpX + deltaC = MAX_HEIGHT_DIFFERENCE
double stepUpX = (m_maxHeightDifference - deltaC) / deltaM;
// (c) deltaM . stepDownX + deltaC = -MAX_HEIGHT_DIFFERENCE
double stepDownX = (-m_maxHeightDifference - deltaC) / deltaM;
// Now construct the link intervals and clip them to the known x overlap interval.
Interval stepDownInterval(std::min(walkX,stepDownX), std::max(walkX,stepDownX));
Interval stepUpInterval(std::min(walkX,stepUpX), std::max(walkX,stepUpX));
stepDownInterval = stepDownInterval.intersect(xOverlap);
stepUpInterval = stepUpInterval.intersect(xOverlap);
// Finally, construct the link segments from the link intervals.
if(!stepDownInterval.empty())
{
Vector2d sL(stepDownInterval.low(), mS*stepDownInterval.low()+cS);
Vector2d sH(stepDownInterval.high(), mS*stepDownInterval.high()+cS);
linkSegments.stepDownSourceToDestSegment.reset(new LineSegment2d(sL,sH));
Vector2d dL(stepDownInterval.low(), mD*stepDownInterval.low()+cD);
Vector2d dH(stepDownInterval.high(), mD*stepDownInterval.high()+cD);
linkSegments.stepUpDestToSourceSegment.reset(new LineSegment2d(dL,dH));
}
if(!stepUpInterval.empty())
{
Vector2d sL(stepUpInterval.low(), mS*stepUpInterval.low()+cS);
Vector2d sH(stepUpInterval.high(), mS*stepUpInterval.high()+cS);
linkSegments.stepUpSourceToDestSegment.reset(new LineSegment2d(sL,sH));
Vector2d dL(stepUpInterval.low(), mD*stepUpInterval.low()+cD);
Vector2d dH(stepUpInterval.high(), mD*stepUpInterval.high()+cD);
linkSegments.stepDownDestToSourceSegment.reset(new LineSegment2d(dL,dH));
}
}
else
{
// If the gradients of the source and destination edges are the same (i.e. the edges are parallel),
// then we either get a step up/step down combination, or a walk link in either direction.
if(fabs(deltaC) <= m_maxHeightDifference)
{
Vector2d s1(xOverlap.low(), mS*xOverlap.low()+cS);
Vector2d s2(xOverlap.high(), mS*xOverlap.high()+cS);
Vector2d d1(xOverlap.low(), mD*xOverlap.low()+cD);
Vector2d d2(xOverlap.high(), mD*xOverlap.high()+cD);
// There's a link between the lines, but we need to check the sign of deltaC to see which type.
if(deltaC > SMALL_EPSILON)
{
// The destination is higher than the source: step up.
linkSegments.stepUpSourceToDestSegment.reset(new LineSegment2d(s1,s2));
linkSegments.stepDownDestToSourceSegment.reset(new LineSegment2d(d1,d2));
}
else if(deltaC < -SMALL_EPSILON)
{
// The destination is lower than the source: step down.
linkSegments.stepDownSourceToDestSegment.reset(new LineSegment2d(s1,s2));
linkSegments.stepUpDestToSourceSegment.reset(new LineSegment2d(d1,d2));
}
else // |deltaC| < SMALL_EPSILON
{
// The destination and source are at the same level: just walk across.
linkSegments.walkSegment.reset(new LineSegment2d(s1,s2));
}
}
}
return linkSegments;
}
