66 lines
2.6 KiB
Ucode
66 lines
2.6 KiB
Ucode
/**
|
|
* Copyright 1998-2013 Epic Games, Inc. All Rights Reserved.
|
|
*/
|
|
class NavMeshPathConstraint extends Object
|
|
native(AI);
|
|
|
|
cpptext
|
|
{
|
|
/**
|
|
* EvaluatePath - this function is called for every A* successor edge. This gives constraints a chance
|
|
* to both modify the heuristic cost (h), the computed actual cost (g), as well as deny use of this edge altogether
|
|
* @param Edge - the successor candidate edge
|
|
* @param PredecessorEdge - Edge we traversed from to reach `Edge`
|
|
* @param SrcPoly - the poly we are expanding from (e.g. the poly from which we want to traverse the Edge)
|
|
* @param DestPoly - The poly we're trying to traverse to (from SrcPoly)
|
|
* @param PathParams - the cached pathing parameters of the pathing entity
|
|
* @param out_PathCost - the computed path cost of this edge (the current value is supplied as input, and can be modified in this function)
|
|
* (this constitutes G of the pathfinding heuristic function F=G+H)
|
|
* @param out_HeuristicCost - the heuristic cost to be applied to this edge (the current heuristic is supplied as input, and can be modified in this function)
|
|
* (this constitutes H of the pathfindign heuristic function F=G+H)
|
|
* @param EdgePoint - the point on the edge that was used for cost calculations, useful starting point if computing distance to something
|
|
* @return - TRUE if this edge is a valid successor candidate and should be added to the open list, FALSE if it should be thrown out
|
|
*/
|
|
virtual UBOOL EvaluatePath( FNavMeshEdgeBase* Edge,
|
|
FNavMeshEdgeBase* PredecessorEdge,
|
|
FNavMeshPolyBase* SrcPoly,
|
|
FNavMeshPolyBase* DestPoly,
|
|
const FNavMeshPathParams& PathParams,
|
|
INT& out_PathCost, INT& out_HeuristicCost,
|
|
const FVector& EdgePoint );
|
|
}
|
|
|
|
/** Next constraint in the list */
|
|
var NavMeshPathConstraint NextConstraint;
|
|
|
|
/** >> Debugging vars - keep track of stats about what we threw out, etc.. */
|
|
|
|
/** number of nodes this constraint has processed */
|
|
var int NumNodesProcessed;
|
|
/** number of nodes this constraint has returned FALSE for */
|
|
var int NumThrownOutNodes;
|
|
/** total cost added by this constraint to the saved *real* cost of nodes */
|
|
var float AddedDirectCost;
|
|
/** total cost added by this constraint to the heuristic cost of nodes */
|
|
var float AddedHeuristicCost;
|
|
|
|
// called when this object is about to be re-used from the cache
|
|
event Recycle()
|
|
{
|
|
NextConstraint = None;
|
|
|
|
NumThrownOutNodes=0;
|
|
AddedDirectCost=0;
|
|
AddedHeuristicCost=0;
|
|
NumNodesProcessed=0;
|
|
}
|
|
|
|
event String GetDumpString()
|
|
{
|
|
return String(self);
|
|
}
|
|
|
|
defaultproperties
|
|
{
|
|
}
|