xevion/Boids
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More cleanup making code cleaner, made Rectangle Boundaries automatically size to camera's view, automatic random boid placement, value tweaking

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Xevion
2020-05-16 22:01:15 -05:00
parent 2dffcdcf3b
commit aaec1923eb
7 changed files with 236 additions and 42 deletions
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33
Assets/BoidController.cs
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@@ -1,28 +1,30 @@
using System;
using System.Collections.Generic;
using UnityEngine;
using Debug = System.Diagnostics.Debug;
using Random = UnityEngine.Random;
public class BoidController : MonoBehaviour {
// Controller Attributes
public Rect space;
[NonSerialized] public Rect space;
// Swarm Attributes
public int boidCount = 50;
public float boidGroupRange = 1.0f;
public float boidStartVelocity = 0.005f;
public float boidVelocityLimit = 2.0f;
public float boidVelocityLimit = 1.0f;
public float separationRange = 2.3f;
// Bias changes how different rules influence individual Boids more or less
public float separationBias = 1.0f;
public float alignmentBias = 1.0f;
public float cohesionBias = 1.0f;
public float separationBias = 0.05f;
public float alignmentBias = 0.05f;
public float cohesionBias = 0.05f;
// Boid Object Prefab
public GameObject boidObject;
// Boid Objects for Updates
public List<Boid> boids = new List<Boid>();
// Used for wrapping
Camera _cam;
@@ -34,15 +36,16 @@ public class BoidController : MonoBehaviour {
// Setup Camera
_cam = Camera.main;
var size = new Vector2(142, 80);
space = new Rect((Vector2) transform.position - (size / 2), size);
// Size the Rectangle
_cam.rect = space;
// Size the Rectangle based on the Camera's Orthographic View
float height = 2f * _cam.orthographicSize;
float width = height * _cam.aspect;
space = new Rect(transform.position, new Vector2(width, height));
// Add in Boid Objects / Spawn Boid Prefabs
for (int i = 0; i < boidCount; i++) {
var position = new Vector2(Random.Range(-15, 15), Random.Range(-15, 15));
var position = new Vector2(
Random.Range(-space.size.x, space.size.x) / 2 * 0.95f,
Random.Range(-space.size.y, space.size.y) / 2 * 0.95f);
GameObject boid = Instantiate(boidObject, position, Quaternion.identity);
boid.transform.parent = transform;
@@ -54,13 +57,11 @@ public class BoidController : MonoBehaviour {
private void Update() {
// Wrapping Functionality
foreach (Boid boid in boids) {
print($"{boid.IsWrappingX} {boid.IsWrappingY}");
if (!space.Contains(boid.position)) {
// Activate Wrap, Move
Vector2 newPosition = boid.transform.position;
Vector3 viewportPosition = _cam.WorldToViewportPoint(newPosition);
if (!boid.IsWrappingX && (viewportPosition.x > 1 || viewportPosition.x < 0)) {
newPosition.x = -newPosition.x;
boid.IsWrappingX = true;
@@ -85,7 +86,7 @@ public class BoidController : MonoBehaviour {
// Update all Boid positions
foreach (Boid boid in boids) {
Vector2 next = boid.NextPosition(boids, magnitudes);
boid.position = next;
boid.transform.position = new Vector3(next.x, next.y, 0);
}