/// <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>
/// The object has taken been damaged.
/// </summary>
/// <param name="amount">The amount of damage taken.</param>
/// <param name="position">The position of the damage.</param>
/// <param name="direction">The direction that the object took damage from.</param>
/// <param name="forceMagnitude">The magnitude of the force that is applied to the object.</param>
/// <param name="frames">The number of frames to add the force to.</param>
/// <param name="radius">The radius of the explosive damage. If 0 then a non-explosive force will be used.</param>
/// <param name="attacker">The GameObject that did the damage.</param>
/// <param name="attackerObject">The object that did the damage.</param>
/// <param name="hitCollider">The Collider that was hit.</param>
public virtual void OnDamage(float amount, Vector3 position, Vector3 direction, float forceMagnitude, int frames, float radius, GameObject attacker, object attackerObject, Collider hitCollider)
{
#if ULTIMATE_CHARACTER_CONTROLLER_MULTIPLAYER
if (m_NetworkInfo != null && m_NetworkInfo.IsLocalPlayer())
{
m_NetworkHealthMonitor.OnDamage(amount, position, direction, forceMagnitude, frames, radius, attacker, hitCollider);
}
#endif
// Add a multiplier if a particular collider was hit. Do not apply a multiplier if the damage is applied through a radius because multiple
// collider are hit.
if (radius == 0 && direction != Vector3.zero && hitCollider != null)
{
Hitbox hitbox;
if (m_ColliderHitboxMap != null && m_ColliderHitboxMap.Count > 0)
{
if (m_ColliderHitboxMap.TryGetValue(hitCollider, out hitbox))
{
amount *= hitbox.DamageMultiplier;
}
else
{
// The main collider may be overlapping child hitbox colliders. Perform one more raycast to ensure a hitbox collider shouldn't be hit.
float distance = 0.2f;
if (hitCollider is CapsuleCollider)
{
distance = (hitCollider as CapsuleCollider).radius;
}
else if (hitCollider is SphereCollider)
{
distance = (hitCollider as SphereCollider).radius;
}
// The hitbox collider may be underneath the base collider. Fire a raycast to detemine if there are any colliders underneath the hit collider
// that should apply a multiplier.
var hitCount = Physics.RaycastNonAlloc(position, direction, m_RaycastHits, distance,
~(1 << LayerManager.IgnoreRaycast | 1 << LayerManager.Overlay | 1 << LayerManager.VisualEffect), QueryTriggerInteraction.Ignore);
for (int i = 0; i < hitCount; ++i)
{
var closestRaycastHit = QuickSelect.SmallestK(m_RaycastHits, hitCount, i, m_RaycastHitComparer);
if (closestRaycastHit.collider == hitCollider)
{
continue;
}
// A new collider has been found - stop iterating if the hitbox map exists and use the hitbox multiplier.
if (m_ColliderHitboxMap.TryGetValue(closestRaycastHit.collider, out hitbox))
{
amount *= hitbox.DamageMultiplier;
hitCollider = hitbox.Collider;
break;
}
}
}
}
}
// Apply the damage to the shield first because the shield can regenrate.
if (m_ShieldAttribute != null && m_ShieldAttribute.Value > m_ShieldAttribute.MinValue)
{
var shieldAmount = Mathf.Min(amount, m_ShieldAttribute.Value - m_ShieldAttribute.MinValue);
amount -= shieldAmount;
m_ShieldAttribute.Value -= shieldAmount;
}
// Decrement the health by remaining amount after the shield has taken damage.
if (m_HealthAttribute != null && m_HealthAttribute.Value > m_HealthAttribute.MinValue)
{
m_HealthAttribute.Value -= Mathf.Min(amount, m_HealthAttribute.Value - m_HealthAttribute.MinValue);
}
var force = direction * forceMagnitude;
if (forceMagnitude > 0)
{
// Apply a force to the object.
if (m_ForceObject != null)
{
m_ForceObject.AddForce(force, frames);
}
else
{
// Apply a force to the rigidbody if the object isn't a character.
if (m_Rigidbody != null && !m_Rigidbody.isKinematic)
{
if (radius == 0)
{
m_Rigidbody.AddForceAtPosition(force * MathUtility.RigidbodyForceMultiplier, position);
}
else
{
m_Rigidbody.AddExplosionForce(force.magnitude * MathUtility.RigidbodyForceMultiplier, position, radius);
}
}
}
}
// Let other interested objects know that the object took damage.
EventHandler.ExecuteEvent <float, Vector3, Vector3, GameObject, Collider>(m_GameObject, "OnHealthDamage", amount, position, force, attacker, hitCollider);
if (m_OnDamageEvent != null)
{
m_OnDamageEvent.Invoke(amount, position, force, attacker);
}
// The object is dead when there is no more health or shield.
if (!IsAlive())
{
#if ULTIMATE_CHARACTER_CONTROLLER_MULTIPLAYER
if (m_NetworkInfo == null || m_NetworkInfo.IsLocalPlayer())
{
#endif
Die(position, force, attacker);
#if ULTIMATE_CHARACTER_CONTROLLER_MULTIPLAYER
}
#endif
}
else
{
// Play any take damage audio if the object did not die. If the object died then the death audio will play.
m_TakeDamageAudioClipSet.PlayAudioClip(m_GameObject);
}
}