Public Member Functions |
Static Public Member Functions |
Protected Member Functions |
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FleePath Class Reference
Returns a path heading away from a specified point to avoid. More...
Detailed Description
Returns a path heading away from a specified point to avoid.
The search will terminate when G > length (passed to the constructor) + FleePath.spread.
Can be used to make an AI to flee from an enemy (cannot guarantee that it will not be forced into corners though :D )
// Call a FleePath call like this, assumes that a Seeker is attached to the GameObject
Vector3 thePointToFleeFrom = Vector3.zero;
// The path will be returned when the path is over a specified length (or more accurately when the traversal cost is greater than a specified value).
// A score of 1000 is approximately equal to the cost of moving one world unit.
int theGScoreToStopAt = 10000;
// Create a path object
// This is how strongly it will try to flee, if you set it to 0 it will behave like a RandomPath
path.aimStrength = 1;
// Determines the variation in path length that is allowed
path.spread = 4000;
// Get the Seeker component which must be attached to this GameObject
Seeker seeker = GetComponent<Seeker>();
// Start the path and return the result to MyCompleteFunction (which is a function you have to define, the name can of course be changed)
seeker.StartPath(path, MyCompleteFunction);
- A* Pro Feature:
- This is an A* Pathfinding Project Pro feature only. This function/class/variable might not exist in the Free version of the A* Pathfinding Project or the functionality might be limited
The Pro version can be bought here
Public Member Functions | |
| FleePath () | |
| Default constructor. More... | |
 Public Member Functions inherited from RandomPath | |
| RandomPath () | |
| Public Member Functions inherited from ABPath | |
| ABPath () | |
| Default constructor. More... | |
| Public Member Functions inherited from Path | |
| void | BlockUntilCalculated () |
| Blocks until this path has been calculated and returned. More... | |
| void | Claim (System.Object o) |
| Claim this path (pooling). More... | |
| void | Error () |
| Aborts the path because of an error. More... | |
| PathState | GetState () |
| Returns the state of the path in the pathfinding pipeline. More... | |
| float | GetTotalLength () |
| Total Length of the path. More... | |
| bool | IsDone () |
| Returns if this path is done calculating. More... | |
| void | Release (System.Object o, bool silent=false) |
| Releases a path claim (pooling). More... | |
| IEnumerator | WaitForPath () |
| Waits until this path has been calculated and returned. More... | |
Static Public Member Functions | |
| static FleePath | Construct (Vector3 start, Vector3 avoid, int searchLength, OnPathDelegate callback=null) |
| Constructs a new FleePath. More... | |
| Static Public Member Functions inherited from RandomPath | |
| static RandomPath | Construct (Vector3 start, int length, OnPathDelegate callback=null) |
| Static Public Member Functions inherited from ABPath | |
| static ABPath | Construct (Vector3 start, Vector3 end, OnPathDelegate callback=null) |
| Construct a path with a start and end point. More... | |
Protected Member Functions | |
| void | Setup (Vector3 start, Vector3 avoid, int searchLength, OnPathDelegate callback) |
| Protected Member Functions inherited from RandomPath | |
| override void | CalculateStep (long targetTick) |
| Calculates the path until completed or until the time has passed targetTick. More... | |
| override void | Initialize () |
| Initializes the path. More... | |
| override void | Prepare () |
| Prepares the path. More... | |
| override void | Reset () |
| Reset all values to their default values. More... | |
| override void | ReturnPath () |
| Calls callback to return the calculated path. More... | |
| RandomPath | Setup (Vector3 start, int length, OnPathDelegate callback) |
| Protected Member Functions inherited from ABPath | |
| override void | Cleanup () |
| Always called after the path has been calculated. More... | |
| virtual void | CompletePathIfStartIsValidTarget () |
| Checks if the start node is the target and complete the path if that is the case. More... | |
| virtual bool | EndPointGridGraphSpecialCase (GraphNode closestWalkableEndNode) |
| Applies a special case for grid nodes. More... | |
| void | UpdateStartEnd (Vector3 start, Vector3 end) |
| Sets the start and end points. More... | |
| void | Setup (Vector3 start, Vector3 end, OnPathDelegate callbackDelegate) |
| Protected Member Functions inherited from Path | |
| void | DebugStringPrefix (PathLog logMode, System.Text.StringBuilder text) |
| Writes text shared for all overrides of DebugString to the string builder. More... | |
| void | DebugStringSuffix (PathLog logMode, System.Text.StringBuilder text) |
| Writes text shared for all overrides of DebugString to the string builder. More... | |
| virtual void | OnEnterPool () |
| Called when the path enters the pool. More... | |
| void | PrepareBase (PathHandler pathHandler) |
| Prepares low level path variables for calculation. More... | |
| virtual void | Trace (PathNode from) |
| Traces the calculated path from the end node to the start. More... | |
Additional Inherited Members | |
| Public Attributes inherited from RandomPath | |
| Vector3 | aim |
| An aim can be used to guide the pathfinder to not take totally random paths. More... | |
| float | aimStrength |
| If an aim is set, the higher this value is, the more it will try to reach aim. More... | |
| int | searchLength |
| G score to stop searching at. More... | |
| int | spread = 5000 |
| All G scores between searchLength and searchLength+spread are valid end points, a random one of them is chosen as the final point. More... | |
| Public Attributes inherited from ABPath | |
| bool | calculatePartial |
| Calculate partial path if the target node cannot be reached. More... | |
| GraphNode | endNode |
| End node of the path. More... | |
| Vector3 | endPoint |
| End point of the path. More... | |
| Vector3 | originalEndPoint |
| End Point exactly as in the path request. More... | |
| Vector3 | originalStartPoint |
| Start Point exactly as in the path request. More... | |
| Int3 | startIntPoint |
| Start point in integer coordinates. More... | |
| GraphNode | startNode |
| Start node of the path. More... | |
| Vector3 | startPoint |
| Start point of the path. More... | |
| Public Attributes inherited from Path | |
| OnPathDelegate | callback |
| Callback to call when the path is complete. More... | |
| int | enabledTags = -1 |
| Which graph tags are traversable. More... | |
| Heuristic | heuristic |
| Determines which heuristic to use. More... | |
| float | heuristicScale = 1F |
| Scale of the heuristic values. More... | |
| OnPathDelegate | immediateCallback |
| Immediate callback to call when the path is complete. More... | |
| NNConstraint | nnConstraint = PathNNConstraint.Default |
| Constraint for how to search for nodes. More... | |
| List< GraphNode > | path |
| Holds the path as a Node array. More... | |
| ITraversalProvider | traversalProvider |
| Provides additional traversal information to a path request. More... | |
| List< Vector3 > | vectorPath |
| Holds the (possibly post processed) path as a Vector3 list. More... | |
| Protected Attributes inherited from ABPath | |
| int [] | endNodeCosts |
| Saved original costs for the end node. More... | |
| PathNode | partialBestTarget |
| Current best target for the partial path. More... | |
| Protected Attributes inherited from Path | |
| PathCompleteState | completeState |
| Backing field for CompleteState. More... | |
| PathNode | currentR |
| The node currently being processed. More... | |
| bool | hasBeenReset |
| True if the Reset function has been called. More... | |
| Int3 | hTarget |
| Target to use for H score calculations. More... | |
| GraphNode | hTargetNode |
| Target to use for H score calculation. More... | |
| int [] | internalTagPenalties |
| The tag penalties that are actually used. More... | |
| int [] | manualTagPenalties |
| Tag penalties set by other scripts. More... | |
| PathHandler | pathHandler |
| Data for the thread calculating this path. More... | |
| Package Functions inherited from ABPath | |
| override string | DebugString (PathLog logMode) |
| Returns a debug string for this path. More... | |
| override uint | GetConnectionSpecialCost (GraphNode a, GraphNode b, uint currentCost) |
| May be called by graph nodes to get a special cost for some connections. More... | |
| Package Functions inherited from Path | |
| uint | CalculateHScore (GraphNode node) |
| Estimated cost from the specified node to the target. More... | |
| bool | CanTraverse (GraphNode node) |
| Returns if the node can be traversed. More... | |
| void | FailWithError (string msg) |
| Causes the path to fail and sets errorLog to msg. More... | |
| Int3 | GetHTarget () |
| uint | GetTagPenalty (int tag) |
| Returns penalty for the given tag. More... | |
| uint | GetTraversalCost (GraphNode node) |
| void | Log (string msg) |
| Appends a message to the errorLog. More... | |
| void | LogError (string msg) |
| Logs an error. More... | |
| void | ReleaseSilent (System.Object o) |
| Releases the path silently (pooling). More... | |
| Package Attributes inherited from Path | |
| float | duration |
| How long it took to calculate this path in milliseconds. More... | |
| Path | next |
| Internal linked list implementation. More... | |
| int | searchedNodes |
| Number of nodes this path has searched. More... | |
| Properties inherited from RandomPath | |
| override bool | FloodingPath [get] |
| override bool | hasEndPoint [get] |
| Properties inherited from ABPath | |
| virtual bool | hasEndPoint [get] |
| Determines if a search for an end node should be done. More... | |
| Properties inherited from Path | |
| PathCompleteState | CompleteState [get, protected set] |
| Current state of the path. More... | |
| bool | error [get] |
| If the path failed, this is true. More... | |
| string | errorLog [get, private set] |
| Additional info on why a path failed. More... | |
| virtual bool | FloodingPath [get] |
| True for paths that want to search all nodes and not jump over nodes as optimizations. More... | |
| PathHandler IPathInternals. | PathHandler [get] |
| ushort | pathID [get, private set] |
| ID of this path. More... | |
| PathState | PipelineState [get, private set] |
| Returns the state of the path in the pathfinding pipeline. More... | |
| bool IPathInternals. | Pooled [get, set] |
| True if the path is currently pooled. More... | |
| bool | recycled [get] |
| True if the path is currently recycled (i.e in the path pool). More... | |
| int [] | tagPenalties [get, set] |
| Penalties for each tag. More... | |
| Properties inherited from IPathInternals | |
| PathHandler | PathHandler [get] |
| bool | Pooled [get, set] |
Constructor & Destructor Documentation
◆ FleePath()
| FleePath | ( | ) |
Default constructor.
Do not use this. Instead use the static Construct method which can handle path pooling.
Member Function Documentation
◆ Construct()
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static |
◆ Setup()
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protected |
The documentation for this class was generated from the following file:
- /Users/arong/Unity/a-pathfinding-project/Assets/AstarPathfindingProject/Pathfinders/FleePath.cs
