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Scove
2026-06-09 09:18:17 +07:00
parent 3578a2750c
commit 71a096556a
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Assets/Opsive/UltimateCharacterController/Scripts/Objects/Explosion.cs
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/// ---------------------------------------------
/// Ultimate Character Controller
/// Copyright (c) Opsive. All Rights Reserved.
/// https://www.opsive.com
/// ---------------------------------------------
namespace Opsive.UltimateCharacterController.Objects
{
using Opsive.Shared.Game;
using Opsive.UltimateCharacterController.Audio;
using Opsive.UltimateCharacterController.Game;
using Opsive.UltimateCharacterController.Events;
using Opsive.UltimateCharacterController.Objects.ItemAssist;
using Opsive.UltimateCharacterController.Traits;
using Opsive.UltimateCharacterController.Utility;
using System.Collections.Generic;
using UnityEngine;
using EventHandler = Opsive.Shared.Events.EventHandler;
/// <summary>
/// Creates an explosion which applies a force and damage to any object that is within the specified radius.
/// </summary>
public class Explosion : MonoBehaviour
{
[Tooltip("Should the object explode when the object is enabled?")]
[SerializeField] protected bool m_ExplodeOnEnable;
[Tooltip("Determines how far out the explosion affects other objects.")]
[SerializeField] protected float m_Radius = 5;
[Tooltip("The maximum amount of damage the explosion applies to objects with the Health component.")]
[SerializeField] protected float m_DamageAmount = 10;
[Tooltip("The maximum amount of force the explosion applies to nearby Rigidbody/IForceObject objects.")]
[SerializeField] protected float m_ImpactForce = 2;
[Tooltip("The number of frames to add the impact force to.")]
[SerializeField] protected int m_ImpactForceFrames = 1;
[Tooltip("The layers that the explosion can affect.")]
[SerializeField] protected LayerMask m_ImpactLayers = ~(1 << LayerManager.IgnoreRaycast | 1 << LayerManager.Water | 1 << LayerManager.SubCharacter | 1 << LayerManager.Overlay |
1 << LayerManager.VisualEffect);
[Tooltip("Does the explosion require line of sight in order to damage the hit object?")]
[SerializeField] protected bool m_LineOfSight;
[Tooltip("The duration of the explosion.")]
[SerializeField] protected float m_Lifespan = 3;
[Tooltip("The maximum number of objects that the explosions can detect.")]
[SerializeField] protected int m_MaxCollisionCount = 100;
[Tooltip("A set of AudioClips that can be played when the explosion occurs.")]
[SerializeField] protected AudioClipSet m_ExplosionAudioClipSet = new AudioClipSet();
[Tooltip("Unity event invoked when the explosion hits another object.")]
[SerializeField] protected UnityFloatVector3Vector3GameObjectEvent m_OnImpactEvent;
public bool ExplodeOnEnable { get { return m_ExplodeOnEnable; } set { m_ExplodeOnEnable = value; } }
public float Radius { get { return m_Radius; } set { m_Radius = value; } }
public float DamageAmount { get { return m_DamageAmount; } set { m_DamageAmount = value; } }
public float ImpactForce { get { return m_ImpactForce; } set { m_ImpactForce = value; } }
public int ImpactForceFrames { get { return m_ImpactForceFrames; } set { m_ImpactForceFrames = value; } }
public LayerMask ImpactLayers { get { return m_ImpactLayers; } set { m_ImpactLayers = value; } }
public bool LineOfSight { get { return m_LineOfSight; } set { m_LineOfSight = value; } }
public float Lifespan { get { return m_Lifespan; } set { m_Lifespan = value; } }
public AudioClipSet ExplosionAudioClipSet { get { return m_ExplosionAudioClipSet; } set { m_ExplosionAudioClipSet = value; } }
public UnityFloatVector3Vector3GameObjectEvent OnImpactEvent { get { return m_OnImpactEvent; } set { m_OnImpactEvent = value; } }
private GameObject m_GameObject;
private Transform m_Transform;
private HashSet<object> m_ObjectExplosions = new HashSet<object>();
private Collider[] m_CollidersHit;
private RaycastHit m_RaycastHit;
/// <summary>
/// Initialize the default values.
/// </summary>
private void Awake()
{
m_GameObject = gameObject;
m_Transform = transform;
m_CollidersHit = new Collider[m_MaxCollisionCount];
AudioManager.Register(m_GameObject);
}
/// <summary>
/// Explode if requested when the component is enabled.
/// </summary>
private void OnEnable()
{
if (m_ExplodeOnEnable) {
Explode(m_DamageAmount, m_ImpactForce, m_ImpactForceFrames, null);
}
}
/// <summary>
/// Do the explosion.
/// </summary>
public void Explode()
{
Explode(m_DamageAmount, m_ImpactForce, m_ImpactForceFrames, null);
}
/// <summary>
/// Do the explosion.
/// </summary>
/// <param name="damageAmount">The amount of damage to apply to the hit objects.</param>
public void Explode(GameObject originator)
{
Explode(m_DamageAmount, m_ImpactForce, m_ImpactForceFrames, originator);
}
/// <summary>
/// Do the explosion.
/// </summary>
/// <param name="damageAmount">The amount of damage to apply to the hit objects.</param>
/// <param name="impactForce">The amount of force to apply to the hit object.</param>
/// <param name="impactForceFrames">The number of frames to add the force to.</param>
/// <param name="originator">The originator of the object.</param>
public void Explode(float damageAmount, float impactForce, int impactForceFrames, GameObject originator)
{
Health health = null;
Rigidbody colliderRigidbody = null;
IForceObject forceObject = null;
var hitCount = Physics.OverlapSphereNonAlloc(m_Transform.position, m_Radius, m_CollidersHit, m_ImpactLayers, QueryTriggerInteraction.Ignore);
#if UNITY_EDITOR
if (hitCount == m_MaxCollisionCount) {
Debug.LogWarning("Warning: The maximum number of colliders have been hit by " + m_GameObject.name + ". Consider increasing the Max Collision Count value.");
}
#endif
for (int i = 0; i < hitCount; ++i) {
// A GameObject can contain multiple colliders. Prevent the explosion from occurring on the same GameObject multiple times.
if (m_ObjectExplosions.Contains(m_CollidersHit[i].gameObject)) {
continue;
}
m_ObjectExplosions.Add(m_CollidersHit[i].gameObject);
// The base character GameObject should only be checked once.
if ((forceObject = m_CollidersHit[i].gameObject.GetCachedParentComponent<IForceObject>()) != null) {
if (m_ObjectExplosions.Contains(forceObject)) {
continue;
}
m_ObjectExplosions.Add(forceObject);
}
// OverlapSphere can return objects that are in a different room. Perform a cast to ensure the object is within the explosion range.
if (m_LineOfSight) {
// Add a slight vertical offset to prevent a floor collider from getting in the way of the cast.
var position = m_Transform.TransformPoint(0, 0.1f, 0);
var direction = m_CollidersHit[i].transform.position - position;
if (Physics.Raycast(position - direction.normalized * 0.1f, direction, out m_RaycastHit, direction.magnitude, m_ImpactLayers, QueryTriggerInteraction.Ignore) &&
!(m_RaycastHit.transform.IsChildOf(m_CollidersHit[i].transform)
#if FIRST_PERSON_CONTROLLER
// The cast should not hit any colliders who are a child of the camera.
|| m_RaycastHit.transform.gameObject.GetCachedParentComponent<FirstPersonController.Character.FirstPersonObjects>() != null
#endif
)) {
// If the collider is part of a character then ensure the head can't be hit.
var parentAnimator = m_CollidersHit[i].transform.gameObject.GetCachedParentComponent<Animator>();
if (parentAnimator != null && parentAnimator.isHuman) {
var head = parentAnimator.GetBoneTransform(HumanBodyBones.Head);
direction = head.position - position;
if (Physics.Raycast(position, direction, out m_RaycastHit, direction.magnitude, m_ImpactLayers, QueryTriggerInteraction.Ignore) &&
!m_RaycastHit.transform.IsChildOf(m_CollidersHit[i].transform) && !m_CollidersHit[i].transform.IsChildOf(m_RaycastHit.transform) &&
m_RaycastHit.transform.IsChildOf(m_Transform)
#if FIRST_PERSON_CONTROLLER
// The cast should not hit any colliders who are a child of the camera.
&& m_RaycastHit.transform.gameObject.GetCachedParentComponent<FirstPersonController.Character.FirstPersonObjects>() == null
#endif
) {
continue;
}
} else {
continue;
}
}
}
// The shield can absorb some (or none) of the damage from the explosion.
var hitDamageAmount = damageAmount;
#if ULTIMATE_CHARACTER_CONTROLLER_MELEE
ShieldCollider shieldCollider;
if ((shieldCollider = m_CollidersHit[i].transform.gameObject.GetCachedComponent<ShieldCollider>()) != null) {
hitDamageAmount = shieldCollider.Shield.Damage(this, hitDamageAmount);
}
#endif
// ClosestPoint only works with a subset of collider types.
Vector3 closestPoint;
if (m_CollidersHit[i] is BoxCollider || m_CollidersHit[i] is SphereCollider || m_CollidersHit[i] is CapsuleCollider || (m_CollidersHit[i] is MeshCollider && (m_CollidersHit[i] as MeshCollider).convex)) {
closestPoint = m_CollidersHit[i].ClosestPoint(m_Transform.position);
} else {
closestPoint = m_CollidersHit[i].ClosestPointOnBounds(m_Transform.position);
}
var hitDirection = closestPoint - m_Transform.position;
// Allow a custom event to be received.
EventHandler.ExecuteEvent<float, Vector3, Vector3, GameObject, object, Collider>(m_CollidersHit[i].transform.gameObject, "OnObjectImpact", hitDamageAmount, closestPoint, hitDirection * m_ImpactForce, originator, this, m_CollidersHit[i]);
if (m_OnImpactEvent != null) {
m_OnImpactEvent.Invoke(hitDamageAmount, closestPoint, hitDirection * m_ImpactForce, originator);
}
// If the shield didn't absorb all of the damage then it should be applied to the character.
if (hitDamageAmount > 0) {
// If the Health component exists it will apply an explosive force to the character/character in addition to deducting the health.
// Otherwise just apply the force to the character/rigidbody.
if ((health = m_CollidersHit[i].gameObject.GetCachedParentComponent<Health>()) != null) {
// The further out the collider is, the less it is damaged.
var damageModifier = Mathf.Max(1 - (hitDirection.magnitude / m_Radius), 0.01f);
health.Damage(hitDamageAmount * damageModifier, m_Transform.position, hitDirection.normalized, impactForce * damageModifier, impactForceFrames, m_Radius, originator, this, null);
} else if (forceObject != null) {
var damageModifier = Mathf.Max(1 - (hitDirection.magnitude / m_Radius), 0.01f);
forceObject.AddForce(hitDirection.normalized * impactForce * damageModifier);
} else if ((colliderRigidbody = m_CollidersHit[i].gameObject.GetCachedComponent<Rigidbody>()) != null) {
colliderRigidbody.AddExplosionForce(impactForce * MathUtility.RigidbodyForceMultiplier, m_Transform.position, m_Radius);
}
}
}
m_ObjectExplosions.Clear();
// An audio clip can play when the object explodes.
m_ExplosionAudioClipSet.PlayAudioClip(m_GameObject);
Scheduler.Schedule(m_Lifespan, Destroy);
}
/// <summary>
/// Place the object back in the ObjectPool.
/// </summary>
private void Destroy()
{
ObjectPool.Destroy(gameObject);
}
}
}