Methods used to map out a path of travel from one point to another, typically avoiding obstacles in the way.

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How to proceed on the waypoint path?

I'm using Dijkstra algorithm to find shortest path and I'm drawing this path on the screen. As the character object moves on, path updates itself(shortens as the object approaches the target and gets ...
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1answer
96 views

In A star, do I use the sum or the edge cost?

When you add a new node to the closed list, you need to check all the adjacent nodes. If you find any adjacent nodes on the open list, you have to check if G would be lower if you went through the ...
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1answer
441 views

Prevent instances from overlapping gamemaker studio

I have a game where multiple instances of an enemy move towards a player in their step process. There can be as many as 50 instances on screen. The issue is that the instances all end up in 1 big ...
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2answers
225 views

How to get characters to be aware that their path is obstructed?

I'm using Unity with Arongranberg's A* pathfinding project to move my characters. However, it appears that my characters are contending for a position on the terrain when they are told to move ...
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2answers
243 views

How can I use triangle picking to determine location of a triangle in world space coordinates?

I am trying to implement point and click movement in my game, but at the moment I am stumped about how I can select parts of a mesh for the player to walk to. So what I have done is I have got a ...
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3answers
436 views

Making an AI walk on a NavigationMesh (2D/Top-Down game)

For some time I have been working on a framework which should make it possible to generate 2D levels based on a set of rules specified by level designers. You can read more about it here as I won't go ...
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1answer
371 views

A* Start path finding in HTML5 Canvas

I'm trying implement A* Start path finding in my games(which are written with JavaScript, HTML5 Canvas). Library for A* Start found this - ...
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2answers
759 views

Grid pathfinding with a lot of entities

I'd like to explain this problem with a screenshot from a released game, DROD: Gunthro's Epic Blunder, by Caravel Games. The game is turn-based and tile-based. I'm trying to create something very ...
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1answer
580 views

Pathfinding using nodes/waypoints without connecting them?

I've been doing some research on pathfinding lately because I want to code a game modification for a game (won't say which exactly) and what I've done is defined a huge list of 3D vectors where a ...
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1answer
218 views

A* and Space partitioning

I'm planning on implementing A* in my game for pathfinding, I understand the basics of how the algorithm works but I was wondering, other than finding the start and end nodes Are there any benefits to ...
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2answers
5k views

How can i use A star pathfinding algorithm

How would i implement an A star algorithm for a game that i'm making on the android in java? i'm looking for a pre-made A star API in java with classes and methods to call. i don't want to have to ...
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1answer
684 views

Navmesh string pulling vs funneling

I'm creating a path-finder for navmesh. I'm wondering which method should I use after the A* has been completed, funneling or string pulling? What are the advantages/disadvantages of using them on a ...
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0answers
46 views

Astar optimalization (A*) [closed]

So I have written own implementation of AStar (A*) algorithm to find paths around my 2d tile based map. My problem is that if I call it each frame (I need to do it) and I'm searching path from corner ...
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1answer
516 views

Is there a way to display navmesh agent path in Unity?

I'm currently making a prototype for a game I plan to develop. As far as I did, I managed to set up the navigation mesh and my navmeshagents. I would like to display the path they are following when ...
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1answer
219 views

What's the best way to move cars along roads

I am implementing car movement game (sort-of like Locomotion). So 60 times a second I have to advance the movement of each car. The problem is I have to look ahead to see if there is a slower car, ...
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0answers
247 views

unity pathfinding [closed]

I have the navmesh and all set up in my unity project but as is I only know how to give it a target to go to, what I want is for it to randomly walk around my scene any help is greatly appreciated
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0answers
377 views

Stuck with A* implementation [closed]

I have implemented some A* code in C# using this JavaScript code. My C# implementation is the same as the above javascript code. But I'm unable to get it to work properly, e.g pathfinder blocks ...
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3answers
2k views

Node-Based pathfinding vs A* and others

Whats the difference between node-based pathfinding algorithm and the A* among others? A friend just told me about node-based, but I cannot find much tutorial or information on it.
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1answer
279 views

How do I make A* check all diagonal and orthogonal directions?

I'm making a turn-based tactical game and I'm trying to implement the A* algorithm. I've been following a tutorial and got to this point, but my characters can't move diagonally up and left. Can ...
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1answer
245 views

About the A* algorith(pathfinding)

We have a formula of f=g+h wherein g is the path cost and h is the distance left to the goal. Given that I only want to move my unit in 4 direction (N,S,E,W), my question is: Can we consider h as ...
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2answers
134 views

Converting 2d path to 3d path

What is the procedure to convert 2d path to 3d one. Maybe it's a silly question, but for example: Let's assume that I have a path from point A to point B. And I have all X and Y coordinates of that ...
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2answers
288 views

Tile walking algorithm for already known set of walkable tile?

Suppose I already have a list of tile that specify which tile the character can move to, and these tiles are clustered around the character. If I want to produce a path (maybe not shortest, but just a ...
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3answers
251 views

Logic to path finding checking

I'm a little stuck on the logic to how i use my path finder efficiently in my game. This is basically how the game works: Building generates goods "Factory" > AI transports goods to "Warehouse" ...
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1answer
203 views

Good baseline size for an A* Search grid?

I'm working on a grid based game/prototype with a continuous open map, and are currently considering what size to make each segment. I've seen some articles mention different sizes, but most of them ...
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2answers
108 views

Finding the nearest object, considering obstacles

For the purposes of this question, we'll assume it involves a Janitor assigned to clean up trash in a building. Given that it is a building, it is safe to assume there are one or more rooms, walls, ...
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1answer
226 views

A*, Tile costs and heuristic; How to approach

I'm doing exercises in tile games and AI to improve my programming. I've written a highly unoptimised pathfinder that does the trick and a simple tile class. The first problem i ran into was that the ...
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2answers
322 views

Roguelike corridor creation; Connecting rooms

I have a simple Tile[,] that I populate with Rooms. Now I need to connect the rooms with a single tile wide corridor. At first I used A* to hook up the rooms but that, of course, get's the best path ...
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1answer
145 views

Quick 3D sight calculation algorithm

I have a tile based board game where units move in 3D space on a 2D isometric view. When calculating attack tiles for a unit, how do I verify that they aren't shooting through a wall or a level too ...
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1answer
131 views

trouble in making a game questions?

all i've a little trouble understanding some concepts while making game please give your suggestions on my questions. I have a animated sprite image this i want to move this image according to given ...
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1answer
703 views

A* Pathfinding Problems

I'm trying to implement the a* pathfinding algorithm in my game. I've looked at dozens of tutorials but I can't seem to get it right. My code is below, and It's not working... does anybody see ...
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1answer
2k views

Basic A star implementation tutorial [duplicate]

Possible Duplicate: Pseudo-code examples of A*? Hey guys Iam making a TD game and now I am stucked in implementing A star algo. I know there are many 3d party softwares but they are ...
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2answers
167 views

best way to implement movement after A* pathfinding? tile-based movement vs pixel-based?

I was able to implement the A* pathfinding algorithm to calculate a path from the enemy to player. After trying to do movement well, I realized I ran into all sorts of problems. I was able to add ...
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1answer
322 views

Pathfinding with different sized units [duplicate]

I am actually working on a general purpose pathfinding library (find it here), mostly oriented for grid-based maps. I was looking for ways to integrate support for pathfinding with units of different ...
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1answer
97 views

Path finding to collect enough items before the fight with the enemy

So I have the following problem : a X by Y grid. On the grid there is a character and a monster and some items that give bonus points to the character's damage if picked and holes that must be ...
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2answers
355 views

Making the player walk on walls in box2d

I'm making a game in stencil where players walk form left to right along randomly generated walls. I cant use waypoints, since the walls' shapes and positions are unpredictable. Here's a descriptive ...
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1answer
749 views

NavMeshAgent in Unity giving jerky performance

I am using NavMeshAgent in my Unity project to calculate and move my object to a particular location. When I do: navMeshAgent.destination = destinationPt the object starts moving, but the motion ...
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1answer
86 views

Detecting if an object is following a path

I am attempting to take GPS data and track it on a map and see if it follows a given path. I have the path as a set of points and the GPS data streams in as a similar set of points. I am attempting to ...
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3answers
382 views

XNA RTS A* pathfinding issues

I'm starting to develop an RTS game using the XNA framework in C# and am still in the very early prototyping stage. I'm working on the basics. I've got unit selection down and am currently working on ...
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1answer
168 views

How can I locate empty space next to polygon regions?

Let's say I have the following area in a top-down map: The circle is the player, the black square is an obstacle, and the grey polygons with red borders are walk-able areas that will be used as a ...
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1answer
142 views

Copying section of map array

I'm experimenting a bit with pathfinding. I'm using Javascript. I have a map array as follows: mapArray = [ [0, 0, 0, 1, 1, 0], [1, 0, 0, 1, 0, 0], [0, 1, 0, ...
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0answers
36 views

What strategies can one employ to do real-time path finding on a server?

In a server where multiple path finding algorithms might be going at once (especially when a mobile might be chasing a player) for several entities at once -- what can we do to speed up path-finding ...
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0answers
20 views

Unity platform pathfinding

I've been trying to find a way to do this but I'm not sure how. I've gone through A* pathfinding but could find anything on this. What I'm looking for is pathfinding for something kind of like a super ...
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0answers
31 views

Cane, Recast and detour

I am working with a project which has an implementation of the popular Recast & Detour code. However there is a module of sort called Cane which seem to have to to with the Crowds part, but also ...
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1answer
158 views

how to implement A Star path finding on 2D map with large tiles

The map tiles I have im my game are 64x64 pixels, and the characters are 16x16 pixels. I was reading about A Star path finding and I was wondering if I need my tiles closer to the size of my ...
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0answers
54 views

Implementing ClearPath (crowd pathfinding)

This is the academic article: http://gamma.cs.unc.edu/CA/ClearPath.pdf Here is the confusing part (marked in red): The first part is the path in which the object will move. The first part of ...
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0answers
144 views

NavMesh agents pushing other NavMesh Agents in Unity Pro

Using the NavMesh system in Unity, I created pathing system for my player character as well as the enemy AI. When a group of enemy NavMesh Agents surround my player character, they can be pushed out ...
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1answer
132 views

Overlaying grid for pathfinding

I have a simple problem. My game is not grid-based, so units can be at any arbitrary coordinate and move at different speeds. My obstacles are all rectangular and axis-aligned, so naturally it makes ...
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0answers
48 views

How to modify graph ingame?

The pathfinding in my game uses this function to generate a graph: def make_graph(self, size, impassable): nodes = [[astar_gridnode(x, y) for y in range(size)] for x in range(size)] graph = ...
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858 views

Collision detection when pathfinding with pathnodes, UDK

I'm trying to create a class that allows my AIController to path find using pathnodes (NOT NavMeshes). It's doing a swell job of going from point to point in a set order (although I would like for it ...
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3answers
265 views

Looking for detailed pathfinding examples

I am currently working on a 2D-TopDown game. Now I was looking for pathfinding algorithms. I read and understood A* and Dijkstra. But there are still some questions I have. So I am looking for ...