ParticleSystemForceField

Definition

• Type: Class
• Namespace: UnityEngine
• Assembly: UnityEngine.ParticleSystemModule
• Inherits from: Behaviour

[RequireComponent(typeof(Transform))]public class ParticleSystemForceField : Behaviour

Remarks

Examples

using System;using System.Collections;using System.Collections.Generic;using System.Linq;using UnityEngine;[RequireComponent(typeof(ParticleSystem))]public class ExampleClass : MonoBehaviour{    public ParticleSystemForceFieldShape m_Shape = ParticleSystemForceFieldShape.Sphere;    public float m_StartRange = 0.0f;    public float m_EndRange = 3.0f;    public Vector3 m_Direction = Vector3.zero;    public float m_Gravity = 0.0f;    public float m_GravityFocus = 0.0f;    public float m_RotationSpeed = 0.0f;    public float m_RotationAttraction = 0.0f;    public Vector2 m_RotationRandomness = Vector2.zero;    public float m_Drag = 0.0f;    public bool m_MultiplyDragByParticleSize = false;    public bool m_MultiplyDragByParticleVelocity = false;    private ParticleSystemForceField m_ForceField;    void Start()    {        // Create a Force Field        var go = new GameObject("ForceField", typeof(ParticleSystemForceField));        go.transform.position = new Vector3(0, 2, 0);        go.transform.rotation = Quaternion.Euler(new Vector3(90.0f, 0.0f, 0.0f));        m_ForceField = go.GetComponent<ParticleSystemForceField>();        // Configure Particle System        transform.position = new Vector3(0, -4, 0);        transform.rotation = Quaternion.identity;        var ps = GetComponent<ParticleSystem>();        var main = ps.main;        main.startSize = new ParticleSystem.MinMaxCurve(0.05f, 0.2f);        main.startSpeed = new ParticleSystem.MinMaxCurve(1.5f, 2.5f);        main.maxParticles = 100000;        var emission = ps.emission;        emission.rateOverTime = 0.0f;        emission.burstCount = 1;        emission.SetBurst(0, new ParticleSystem.Burst(0.0f, 200, 200, -1, 0.1f));        var shape = ps.shape;        shape.shapeType = ParticleSystemShapeType.SingleSidedEdge;        shape.radius = 5.0f;        shape.radiusMode = ParticleSystemShapeMultiModeValue.BurstSpread;        shape.randomPositionAmount = 0.1f;        shape.randomDirectionAmount = 0.05f;        var forces = ps.externalForces;        forces.enabled = true;    }    void Update()    {        m_ForceField.shape = m_Shape;        m_ForceField.startRange = m_StartRange;        m_ForceField.endRange = m_EndRange;        m_ForceField.directionX = m_Direction.x;        m_ForceField.directionY = m_Direction.y;        m_ForceField.directionZ = m_Direction.z;        m_ForceField.gravity = m_Gravity;        m_ForceField.gravityFocus = m_GravityFocus;        m_ForceField.rotationSpeed = m_RotationSpeed;        m_ForceField.rotationAttraction = m_RotationAttraction;        m_ForceField.rotationRandomness = m_RotationRandomness;        m_ForceField.drag = m_Drag;        m_ForceField.multiplyDragByParticleSize = m_MultiplyDragByParticleSize;        m_ForceField.multiplyDragByParticleVelocity = m_MultiplyDragByParticleVelocity;    }    void OnGUI()    {        GUIContent[] shapeLabels = Enum.GetNames(typeof(ParticleSystemForceFieldShape)).Select(n => new GUIContent(n)).ToArray();        m_Shape = (ParticleSystemForceFieldShape)GUI.SelectionGrid(new Rect(25, 25, 400, 25), (int)m_Shape, shapeLabels, 4);        float y = 80.0f;        float spacing = 40.0f;        GUI.Label(new Rect(25, y, 140, 30), "Start Range");        m_StartRange = GUI.HorizontalSlider(new Rect(165, y + 5, 100, 30), m_StartRange, 0.0f, 2.0f);        y += spacing;        GUI.Label(new Rect(25, y, 140, 30), "End Range");        m_EndRange = GUI.HorizontalSlider(new Rect(165, y + 5, 100, 30), m_EndRange, 2.0f, 3.0f);        y += spacing;        GUI.Label(new Rect(25, y, 140, 30), "Direction");        m_Direction.x = GUI.HorizontalSlider(new Rect(165, y + 5, 40, 30), m_Direction.x, -1.0f, 1.0f);        m_Direction.y = GUI.HorizontalSlider(new Rect(210, y + 5, 40, 30), m_Direction.y, -1.0f, 1.0f);        m_Direction.z = GUI.HorizontalSlider(new Rect(255, y + 5, 40, 30), m_Direction.z, -1.0f, 1.0f);        y += spacing;        GUI.Label(new Rect(25, y, 140, 30), "Gravity");        m_Gravity = GUI.HorizontalSlider(new Rect(165, y + 5, 100, 30), m_Gravity, -0.05f, 0.05f);        y += spacing;        GUI.Label(new Rect(25, y, 140, 30), "Gravity Focus");        m_GravityFocus = GUI.HorizontalSlider(new Rect(165, y + 5, 100, 30), m_GravityFocus, 0.0f, 1.0f);        y += spacing;        GUI.Label(new Rect(25, y, 140, 30), "Rotation Speed");        m_RotationSpeed = GUI.HorizontalSlider(new Rect(165, y + 5, 100, 30), m_RotationSpeed, -10.0f, 10.0f);        y += spacing;        GUI.Label(new Rect(25, y, 140, 30), "Rotation Attraction");        m_RotationAttraction = GUI.HorizontalSlider(new Rect(165, y + 5, 100, 30), m_RotationAttraction, 0.0f, 0.01f);        y += spacing;        GUI.Label(new Rect(25, y, 140, 30), "Rotation Randomness");        m_RotationRandomness.x = GUI.HorizontalSlider(new Rect(165, y + 5, 60, 30), m_RotationRandomness.x, 0.0f, 1.0f);        m_RotationRandomness.y = GUI.HorizontalSlider(new Rect(230, y + 5, 60, 30), m_RotationRandomness.y, 0.0f, 1.0f);        y += spacing;        GUI.Label(new Rect(25, y, 140, 30), "Drag");        m_Drag = GUI.HorizontalSlider(new Rect(165, y + 5, 100, 30), m_Drag, 0.0f, 20.0f);        y += spacing;        m_MultiplyDragByParticleSize = GUI.Toggle(new Rect(25, y, 220, 30), m_MultiplyDragByParticleSize, "Multiply Drag by Particle Size");        y += spacing;        m_MultiplyDragByParticleVelocity = GUI.Toggle(new Rect(25, y, 220, 30), m_MultiplyDragByParticleVelocity, "Multiply Drag by Particle Velocity");        y += spacing;    }}

Properties

Inheritance

Operators