Questions tagged [steering-behaviors]

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1answer
55 views

How should I combine A* with steering?

I want to combine A* pathfinding with evasion, pursuit, and fleeing. For example, if I tell an agent to move to a position and avoid enemy agents on the way, it will create an A* path towards that ...
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0answers
23 views

Finding the site of the potential collision between 2 vehicles

I've been trying to implement the unaligned collision avoidance steering behavior. I get what needs to be done on a high level, but struggle with the maths behind it. On Craig Reynolds site, he ...
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25 views

Character shakes when using raycast avoidance (libgdx)

https://github.com/libgdx/gdx-ai/blob/master/tests/src/com/badlogic/gdx/ai/tests/steer/box2d/tests/Box2dRaycastObstacleAvoidanceTest.java Literally, I copied the core avoidance code. But substituted ...
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18 views

Steering behaviours that gaurentee not to hit something

I'm really struggling how people make steering behaviours that guarantee a given agent will never hit something. I want to have a flocking algorithm that the agents can follow each other and also ...
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1answer
103 views

How to Steer a Moving Object Away From Another Object(s)

I'm working with C# in Unity, and I'm making a top-down space shooter game in which there are many different AI-controlled ships flying around. The problem is that these ships often fly on top of one ...
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40 views

Seek a point with a final velocity

I've read a little bit about steering behaviours and I want to implement something similar to seeking, except that I would like my object to arrive at the target at its maximum speed in a specific ...
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1answer
42 views

Framerate Dependant Steering Behaviour

I've been studying steering and flocking behaviors, if not directly from Craig Reynolds work on Steering Behaviors For Autonomous Characters (http://www.red3d.com/cwr/steer/). I understand the basic ...
3
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1answer
158 views

Dodge different type of obstacles

I'm writing a 2D game where the player has to kill a Ninja. This Ninja is coming closer with a constant speed chasing the player. The Map has some static obstacles like stones no one can pass. The ...
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1answer
80 views

Controlling a thrustered 2D space ship with angular rotation and max speed

In my game I have a computer controlled ship that is accelerated by a thruster: with a constant force and in the direction of the ship's current orientation/rotation angle. Thrusting My ship has a ...
3
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3answers
121 views

How to implement smooth wandering on an annulus?

I am creating a 2D action platformer and want to create some steering behavior for a mage enemy. Basically, I want the mage to smoothly wander inside an annulus centered on my player. Below is an ...
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1answer
54 views

Steering constantly turning in circles

I've been working on a fish system in a compute shader but bugs have been drowning me. The latest bug had me strip almost all the functionality to track down: Fish keep turning in circles. It starts ...
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1answer
123 views

Confused about calculation of steering force

I'm reading Programming Game AI by Example, by Mat Buckland. What I don't understand there is why the individual behaviors return a vector representing change in velocity, but the combined result is ...
2
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1answer
117 views

How to implement swooping movement?

I am trying to code some swooping behavior for a flying enemy in my 2D platformer. The ideal behavior has the enemy starting from an arbitrary height above the ground, then accelerating downward and ...
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0answers
50 views

How to implement back and forth steering behavior?

I am trying to implement some behavior for a flying enemy in my 2D platformer. The desired behavior is for the enemy to fly back and forth across the player, harrowing him. If the player was ...
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1answer
126 views

What does distance divided by acceleration mean?

I'm reading a book named "Programming Game AI by Example". Here's a method to help an autonomous character to slow down when it's getting closer and closer to its target: ...
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0answers
82 views

Converging at position and angle using motor-based rigidbody movement

I am given a rigidbody positioned in \$\mathbb{R}^2\$. It is a box of length \$l\$ and height \$\epsilon\$. The position of the box's left center is described by \$\vec{p}\$, and its angle from the x-...
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4answers
267 views

How to combine steering forces?

I am trying to understand how to implement and combine steering vectors for autonomous agents as described by Craig Reynolds. My understanding is that each steering force should be calculated ...
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1answer
164 views

Vector field collision avoidance

I'm developing a simple "Geometry Wars" like game: 2D world and multiple enemy spaceships. The enemies should be able to pursue the player and avoid collisions between them at the same time. I've ...
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2answers
367 views

How would I go about implementing a collision avoidance check, avoiding moving objects from multiple directions?

So I'm making a testbed for an AI actor(ship). It's a simple asteroids game using an AI controlled actor. I'm doing this using VS, monogame. I have implemented a simple steering behaviour using a ...
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1answer
96 views

How to implement wall-following behavior?

I am working on an action platformer and am trying to implement an enemy with simple wall-following behavior. I want the enemy to follow the boundary of whatever connected constellation of walls it is ...
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0answers
54 views

Arrival Steering Behavior stop before reaching evader

Im doing steering behaviors and trying to stop before reaching the evader. Instead of reaching the evader at its center, I need it to stop before. I cant seem to figure this out though. My code is ...
2
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1answer
61 views

move toward object and transition to circling around it.

While it's easy for me to get a object circle around another and move toward it, i've got a few problems I couldn't find a solution to, yet. Ill go here as follows: I) description of scenario II) ...
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1answer
201 views

Is PID considered Steering Behavior?

So I've recently used a PID controller to build a bot for a 2d physics based game. I also did a bit of reading on steering behavior but am still confused over one thing: Is a PID controller considered ...
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2answers
98 views

Approaches on detecting if a car should steer left or right considering a next direction

I'm developing the A.I. of my racing game, and I'm having an unforeseen problem. I manage to get the bot to drive by itself by accelerating in the direction of an angle that is returned using the ...
3
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1answer
668 views

How can I apply steering behaviors to a car controlled with turning and acceleration?

I feel like I've got my head around steering behaviors, but I've having trouble applying them to a car. The steering behaviors return forces that one could apply to an object that can move in any ...
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1answer
136 views

Group path following

A path is defined as a list of positions for units to follow sequentially to navigate terrain. For example, ...
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1answer
93 views

Steering behaviors: how to flee then go back towards the hunter?

I have implemented a Wander and Flee steering behavior and it works like this: When the entity is not hunted by anything it wanders around. But when it is hunted by the player it will flee away from ...
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1answer
67 views

Unity2D Having trouble steering gameobject

So I am making a 2d maze game where one of the enemies has to follow the player once it detects the player. I am currently using a steering method to steer the enemy towards the player and also when ...
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0answers
239 views

starting point for a soccer game AI [closed]

I would like to build a simple but challenging soccer game. I can define simple as not need to be realistic and challenging having a good team sense that could colaborate doing nice plays. I have ...
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1answer
178 views

Steering Behavior Pursuit quick question

In the code below, you will see Heading(). Is that just a position that is normalized? If not, then what is the heading? ...
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2answers
306 views

Steering Behavior Seeking

I am trying put a seek feature in my code. Just frame code, not actual code. ...
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1answer
219 views

How to implement Boids steering efficiently? (ie. find nearest neighbours of moving entities)

As I understand it, modern pathfinding uses ideas such as Boids steering on top of traditional A* and Dijkstra's algorithm. It's easy to find recommendations for implementing Dijkstra's algorithm ...
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0answers
259 views

Reimplemented steering seek behavior from PyGame to LÖVE is much slower than original

I'm learning about steering behaviors and watched this nice explanation tutorial - https://www.youtube.com/watch?v=g1jo_qsO5c4&feature=youtu.be with the source code available at https://github.com/...
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1answer
150 views

How to create follow leader behavior?

Assume that this behavior has Separation behavior. I tried to implement the FollowLeader behavior from this article. In the code ...
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2answers
3k views

Unity3D - Smooth rotation for seek steering behavior

I am trying to implement Reynolds' seek steering behaviour, but I am having problems on the rotation part. This is what I have: ...
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0answers
60 views

Best way to create defence(withdraw) algorthim libgdx?

I have created user body and enemy body. Enemy body uses the steering behavior created by gdx AI. User body have it own control inputprocessor. World doesnt have gravity. Enemy body arrives the user ...
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2answers
561 views

3D collision avoidance: finding the updated velocity vector (outside the “collision-velocities” cones)

I am trying to understand and implement the mechanism of a fully 3D collision avoidance (steering behavior) system for flight movement (six degrees of freedom), currently focusing on circumventing ...
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1answer
482 views

Raycasting. Corner trap

In my top-down game character moves to target (pathfinding) also avoiding obstacles with Raycasting(Central ray with whiskers), but situation like on picture causes shiver and unneeded turning (...
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0answers
163 views

Steering and wall hugging problem

What I'm hoping to achieve is that when the player steers into a wall the movement is smoothed out by hugging along the wall, moving only with the velocity parallel to the wall, zeroing out the normal ...
1
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1answer
445 views

FollowPath steering behavior

I'm having a problem with AI movement in my top-down game. AI builds path and than moves using libgdx FollowPath (this problem is still actual) steering behavior. I have some solutions, but can't ...
1
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1answer
204 views

Is reinforcement learning overkill for a vehicle steering bot?

I'm slightly familiar with the reinforcement learning (through this edx.org MOOC). Also I'm aware of reactive planning technique. I want to write a vehicle bot for a racing game, where cars have to ...
4
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2answers
970 views

calculating the weights for direction vectors to a target

I have an entity that is allowed to move in a fixed amount of directions. Let's call a the angle between two directions. r is the length of each direction vector. Now the entity wants to head from its ...
2
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2answers
253 views

How to stop Follow Path steering behavior when reached target?

I'm using libgdx Follow Path Steering Behavior in my top-down game. When unit reaches the end of the path, it goes to the start (not directly, but following path), then to the end and so on. How to ...
4
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1answer
1k views

Steering behaviours: collision avoidance with rectangles

I'm trying to implement collision avoidance steering behaviour using rectangles. Most of the tutorials I've found are with circles, and there's a substantial difference. For example, I've been reading ...
4
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1answer
875 views

Local avoidance together with any-angle types of A* Pathfinding

Recently I have been implementing the Block A* any-angle path-finding algorithm in a project I have, for which I need extremely efficient results due to the large number of NPCs. However, I still do ...
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0answers
145 views

Deterministic steering behaviors

I'm working on a turn based strategy game (like Jagged Alliance), where the player moves his units individually during his turn, while the enemies (zombies) all move and react simultaneously. I use ...
3
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1answer
3k views

Wander steering behaviour in 3D

I'm trying to implement the Wander Steering Behaviour but getting strange result (see .gif). What am i doing wrong? I want to move a sphere in a random direction. I read this article Understanding ...
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2answers
1k views

Best 2d AI movement system

I'm creating a top-down rpg (no tile-based) using libgdx. Now I need to make enemies move on map with obstacles. What is the best approach to realize that? A*(I think, if enemy see player, he should ...
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2answers
2k views

Pathfinding and collision avoidance on mobile

Currently I'm developing a Diablo like game for mobile platform(iphone5+). A simple A* search will find the path, but collision avoidance still needs to be taken into consideration. There will be ...
0
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2answers
278 views

Need some help with math steering behavior stopping on destination point

I have implemented a movement system based on steering behaviors: http://gamedevelopment.tutsplus.com/series/understanding-steering-behaviors--gamedev-12732 where each object has vec2 position, ...