Unity games with NEAT algorithm
This project was build with SharpNEAT port to Unity
- Download this project
- Extract it and open it with your version of Unity
- Open Scene in CarRacer or in CarPlatform (which ever game you want)
- Run the game and hit Start
- Make a new folder in Assets folder where all your game files will be
- Copy Template Scene from Template folder to your game folder
- In Evaluator, set the variables to desired value (number of inputs, outputs, population size, etc.) and place object you want to train with in "Unit" field
- On the same object place a new script component and copy-paste following code:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using SharpNeat.Phenomes;
public class yourScriptName : UnitController {
bool IsRunning;
IBlackBox box;
// Use this for initialization
void Start() {
}
// Update is called once per frame
void FixedUpdate()
{
if (IsRunning)
{
ISignalArray inputArr = box.InputSignalArray; // Set network input
inputArr[0] = setFirstInput;
inputArr[1] = setSecondInput;
...
box.Activate(); //Activate network
ISignalArray outputArr = box.OutputSignalArray; // Get network output
readFirstOutput = outputArr[0];
readSecondOutput = outputArr[1];
...
}
}
public override void Stop()
{
this.IsRunning = false;
}
public override void Activate(IBlackBox box)
{
this.box = box;
this.IsRunning = true;
}
public override float GetFitness()
{
// Implement a meaningful fitness function here, for each unit.
return 0;
}
}- Correctly assign inputs and outputs of the network in FixedUpdate function
- Implement fitness function in GetFitness()