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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11
Assets/Boid.cs
View File

@@ -1,14 +1,13 @@
using System;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Analytics;
using Random = UnityEngine.Random;
// Boids are represented by a moving, rotating triangle.
// Boids should communicate with sibling Boids
public class Boid : MonoBehaviour {
[NonSerialized] public Vector2 position = Vector2.zero;
public Vector2 velocity;
[NonSerialized] public Vector2 velocity;
[NonSerialized] public bool IsWrappingX = false;
[NonSerialized] public bool IsWrappingY = false;
private BoidController parent;
@@ -23,12 +22,12 @@ public class Boid : MonoBehaviour {
// Updates the rotation of the object based on the Velocity
transform.rotation = Quaternion.Euler(0, 0, Mathf.Rad2Deg * -Mathf.Atan2(velocity.x, velocity.y));
}
public Vector2 NextPosition(List<Boid> boids, float[] magnitudes) {
// Skip Flock Calculations if wrapping in progress
if (IsWrappingX || IsWrappingY)
return position + velocity;
// Acquires all Boids within the local flock
List<Boid> flock = GetFlock(parent.boids, parent.boidGroupRange);
@@ -58,7 +57,7 @@ public class Boid : MonoBehaviour {
Vector2 center = Vector2.zero;
foreach (Boid boid in flock)
center += boid.position;
center /= flock.Count;
center /= parent.boids.Count;
return (center - this.position) / 100;
}
@@ -67,7 +66,7 @@ public class Boid : MonoBehaviour {
Vector2 c = Vector2.zero;
foreach (Boid boid in flock) {
Vector2 diff = boid.position - this.position;
if (diff.magnitude < 5)
if (diff.magnitude < parent.separationRange)
c -= diff;
}

33
Assets/BoidController.cs
View File

@@ -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);
}

6
Assets/Resources/BoidMaterial.mat
View File

@@ -7,7 +7,7 @@ Material:
m_CorrespondingSourceObject: {fileID: 0}
m_PrefabInstance: {fileID: 0}
m_PrefabAsset: {fileID: 0}
m_Name: New Material
m_Name: BoidMaterial
m_Shader: {fileID: 46, guid: 0000000000000000f000000000000000, type: 0}
m_ShaderKeywords:
m_LightmapFlags: 4
@@ -61,7 +61,7 @@ Material:
- _DetailNormalMapScale: 1
- _DstBlend: 0
- _GlossMapScale: 1
- _Glossiness: 0.5
- _Glossiness: 0
- _GlossyReflections: 1
- _Metallic: 0
- _Mode: 0
@@ -73,5 +73,5 @@ Material:
- _UVSec: 0
- _ZWrite: 1
m_Colors:
- _Color: {r: 1, g: 1, b: 1, a: 1}
- _Color: {r: 0.16135636, g: 0.2708125, b: 0.6981132, a: 1}
- _EmissionColor: {r: 0, g: 0, b: 0, a: 1}

198
Assets/Scenes/SampleScene.unity
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@@ -50,12 +50,11 @@ LightmapSettings:
m_BounceScale: 1
m_IndirectOutputScale: 1
m_AlbedoBoost: 1
m_TemporalCoherenceThreshold: 1
m_EnvironmentLightingMode: 0
m_EnableBakedLightmaps: 0
m_EnableRealtimeLightmaps: 0
m_LightmapEditorSettings:
serializedVersion: 10
serializedVersion: 12
m_Resolution: 2
m_BakeResolution: 40
m_AtlasSize: 1024
@@ -63,6 +62,7 @@ LightmapSettings:
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m_CompAOExponent: 1
m_CompAOExponentDirect: 0
m_ExtractAmbientOcclusion: 0
m_Padding: 2
m_LightmapParameters: {fileID: 0}
m_LightmapsBakeMode: 1
@@ -77,10 +77,16 @@ LightmapSettings:
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m_PVRSampleCount: 500
m_PVRBounces: 2
m_PVREnvironmentSampleCount: 500
m_PVREnvironmentReferencePointCount: 2048
m_PVRFilteringMode: 2
m_PVRDenoiserTypeDirect: 0
m_PVRDenoiserTypeIndirect: 0
m_PVRDenoiserTypeAO: 0
m_PVRFilterTypeDirect: 0
m_PVRFilterTypeIndirect: 0
m_PVRFilterTypeAO: 0
m_PVRFilteringMode: 1
m_PVREnvironmentMIS: 0
m_PVRCulling: 1
m_PVRFilteringGaussRadiusDirect: 1
m_PVRFilteringGaussRadiusIndirect: 5
@@ -89,6 +95,7 @@ LightmapSettings:
m_PVRFilteringAtrousPositionSigmaIndirect: 2
m_PVRFilteringAtrousPositionSigmaAO: 1
m_ShowResolutionOverlay: 1
m_ExportTrainingData: 0
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--- !u!196 &4
@@ -116,9 +123,10 @@ NavMeshSettings:
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@@ -133,20 +141,28 @@ GameObject:
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m_GateFitMode: 2
m_FOVAxisMode: 0
m_SensorSize: {x: 36, y: 24}
m_LensShift: {x: 0, y: 0}
m_FocalLength: 50
m_NormalizedViewPortRect:
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x: 0
@@ -157,7 +173,7 @@ Camera:
far clip plane: 1000
field of view: 60
orthographic: 1
orthographic size: 5
orthographic size: 40
m_Depth: -1
m_CullingMask:
serializedVersion: 2
@@ -176,13 +192,165 @@ Camera:
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boidStartVelocity: 0.05
boidVelocityLimit: 0.8
separationRange: 2.3
separationBias: 0.01
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cohesionBias: 0.009
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11
Assets/Util.cs Normal file
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@@ -0,0 +1,11 @@
using UnityEngine;
public class Util {
public static Vector2 RotateBy(Vector2 v, float a) {
var ca = Mathf.Cos(a);
var sa = Mathf.Sin(a);
var rx = v.x * ca - v.y * sa;
return new Vector2((float) rx, (float) (v.x * sa + v.y * ca));
}
}

11
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ProjectSettings/EditorSettings.asset
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