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-1
votes
1answer
14 views

NavMeshAgent in unity not working

I am making a game in unity and it is throwing the error "Failed to create agent because there is no valid NavMesh" and i don't know what the problem is. using UnityEngine; using ...
2
votes
1answer
32 views

Add navigation obstacles during runtime lags

Please watch this short video. http://screencast.com/t/vw2a5FdOOT It shows the problem. It's using the build in Unity navigation and followed the guide to build the demo in the video. Everytime I ...
1
vote
1answer
62 views

Find shortest path (quickly) on the surface of a 3d model?

Imagine this scenario: we have a 3d model, for instance a doughnut, apple or an orange (possibly something more complex). There's an insect (let's say an ant) on the surface of that food item. Now ...
4
votes
3answers
259 views

What is the most appropriate path-finding solution for a very large proceduraly generated environment?

I have been reading quite a bit in order to make the following choice: which path-finding solution should one implement in a game where the world proceduraly generated, of really large dimensions? ...
0
votes
0answers
24 views

NavMesh giving jerky like motion

I instantiate Gameobjects that have a NavMeshAgent attached to them. Their destination is the player that can move around a map, and there is a baked NavMesh on the map. The problem I'm having is ...
1
vote
3answers
242 views

AI Random Path Genenrating

I would like to make an enemy walk randomly around a map I have made and if the player is in his zone of sight the enemy to change state to attacking/following. So how would I accomplish something ...
0
votes
0answers
39 views

Getting portals along a path of navigation nodes

I'm trying to create the path-finding algorithm for a small project and I'm having problems straightening the path after the A*-search returns a path along the navigation nodes (vertices of a ...
8
votes
1answer
1k views

Pathfinding: Tile-Based Navigation Mesh

I'm developing a real time, tile-based RTS. This is an example map: This map consists of 4 regions with 256 tiles each. Blue tiles represent obstacles. Units can move in the standard eight ...
2
votes
2answers
116 views

How to convert non-discreate data for discreate pathfinding?

I have a list of entities that looks like [{x,y,width,height}, {x,y,width,height}, ...]. This list is non-discreate, It doesn't follow a grid. entities can be positioned at floats like x:2.345 Most ...
1
vote
1answer
503 views

Smoothing Pathfinding on Tile-Based Terrain but Free-Roaming Player

I'm sorry if this is a long post, but I feel as though the details should help clarify gray areas. I'll try and provide a detailed layout of what I'm trying to achieve, what I have so far, and where ...
5
votes
1answer
376 views

Dynamic navigation mesh changes

I'm currently trying to convert from grids to navigation meshes for pathfinding, since grids are either too coarse for accurate navigation, or too fine to be useful for object tracking. While my map ...
4
votes
3answers
590 views

Unit turning in navmesh-based pathfinding

I'm working on an RTS game, and I'm using navmeshes for unit pathfinding. I do know how to find a general path within a navmesh, but how do you determine if the unit have enough space to turn? I ...
2
votes
1answer
3k views

How do you set the target location for a navmesh using a GameObject?

I am trying to get a GameObject to navigate through a map and get to the exit. I have created a navmesh for the map and given the player GameObject a navmesh agent. The exit is marked with a empty ...
7
votes
2answers
702 views

“Line of sight” path across navigation mesh

I want to calculate the line of sight in a navigation mesh. Consider the image below, the yellow line is the result of only A* and the red line is the result of a line of sight" algorithm that uses ...
5
votes
1answer
2k views

How to do starcraft pathfinding?

I've been trying to figure out how to implement something like the pathfinding in Starcraft 2. I'm not looking for all the sophisticated features like flocking, queueing, etc. In fact I like how in ...
1
vote
2answers
947 views

A* path finding for road network - data structure to represent directivity

I have been reading A* path finding to apply on a road like network structure. Most of the code I saw is about A* on tile based maps. There is a short description at Amit's page here about what I am ...
2
votes
1answer
295 views

How to predict future location of a Car in a Navigation Mesh based pathfinding system?

I am developing a car based shooting game in which the Cars have to shoot each other 3/4 times and eliminate it from the game. I am trying to develop the AI for my cars now. The problem is how can I ...
1
vote
2answers
314 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 ...
0
votes
1answer
2k 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 ...
1
vote
3answers
1k 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 ...
3
votes
3answers
1k views

Implementing an automatic navigation mesh generation for 2d top down map?

I am currently in the middle of implementing an A* pathfinding for enemies. In order to implement the actual A* logic, I need a navigation mesh for my map. I am working on a 2D top down rpg map. The ...
14
votes
2answers
4k views

How can I generate a navigation mesh for a tile grid?

I haven't actually started programming for this one yet, but I wanted to see how I would go about doing this anyway. Say I have a grid of tiles, all of the same size, some traversable and some not. ...
0
votes
1answer
249 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 ...
8
votes
3answers
7k views

How can I generate a 2d navigation mesh in a dynamic environment at runtime?

So I've grasped how to use A* for path-finding, and I am able to use it on a grid. However, my game world is huge and I have many enemies moving toward the player, which is a moving target, so a grid ...
5
votes
1answer
444 views

How does an AI determine the bearing to follow within a nav mesh?

I've done some reading on nav-meshes, and I understand how to generate a path of polygons to reach a goal. However, what I don't understand is how you determine the bearing to follow within each ...
14
votes
1answer
5k views

A* navigational mesh path finding

So I've been making this top down 2D java game in this framework called Greenfoot and I've been working on the AI for the guys you are gonna fight. I want them to be able to move around the world ...
16
votes
6answers
818 views

Making the AI take different paths to each other

I have a top down 2d game where the AI spawn at the edges of the map and run towards the center. I'm using A* and a node mesh to do the pathfinding. Right now, the AI spawn at a point on the edge of ...
8
votes
1answer
1k views

What are the disadvantages and/or limitations of navigation meshes?

I have a lot of materials on navigation meshes, what they are, their advantages over graphs made up of waypoints, etc. However, I haven't seen much information regarding the limitations and the ...