60 lines
3.2 KiB
C#
60 lines
3.2 KiB
C#
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using UnityEngine;
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namespace DestroyIt
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{
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public static class ExplosionHelper
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{
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//TODO: IsExposedToBlast method is not used right now. Need to determine if it's worth fixing, and if so, how to fix it.
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//TODO: It was not reporting objects being exposed to blasts when at steep angles to, or in contact with, the object.
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/// <summary>Determines whether a collider object was exposed to a blast, by raycasting.</summary>
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/// <param name="gameObj">The game object that may be exposed to the blast.</param>
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/// <param name="explosion">The details about the blast.</param>
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public static bool IsExposedToBlast(this GameObject gameObj, ExplosiveDamage explosion)
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{
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RaycastHit hit;
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if (Physics.Raycast(explosion.Position, (gameObj.transform.position - explosion.Position), out hit, explosion.Radius))
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{
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Collider[] colliders = gameObj.GetComponentsInChildren<Collider>();
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foreach (Collider coll in colliders)
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{
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if (hit.collider == coll)
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{
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//Debug.DrawRay(explosion.Position, gameObj.transform.position - explosion.Position, Color.red, 5f);
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return true;
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}
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}
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//Debug.DrawRay(explosion.Position, gameObj.transform.position - explosion.Position, Color.gray, 5f);
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}
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return false;
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}
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/// <summary>Applies impact/explosive force to debris and collider for a realistic effect.</summary>
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/// <remarks>Force/Impact is reduced by the destroyed object's VelocityReduction amount (from XML config file).</remarks>
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public static void ApplyForcesToDebris<T>(GameObject destroyedObj, float velocityReduction, T damageInfo)
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{
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if (destroyedObj == null) { return; }
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Rigidbody[] debrisRigidbodies = destroyedObj.GetComponentsInChildren<Rigidbody>();
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// For Explosive Damage: Apply force to exposed debris from direction explosion originated, modified by proximity to the blast.
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if (damageInfo.GetType() == typeof(ExplosiveDamage))
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{
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ExplosiveDamage explosion = damageInfo as ExplosiveDamage;
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// Apply explosive force to each debris piece. (NOTE: decided not to check if each piece of debris was exposed to the blast, because that effect was inaccurate when raycasting from steep angles.)
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foreach (Rigidbody debrisRigidbody in debrisRigidbodies)
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debrisRigidbody.AddExplosionForce(explosion.BlastForce, explosion.Position, explosion.Radius, explosion.UpwardModifier);
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}
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if (damageInfo.GetType() == typeof(ImpactDamage))
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{
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ImpactDamage impact = damageInfo as ImpactDamage;
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if (impact != null && impact.AdditionalForce > 0f)
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{
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foreach (Rigidbody debrisRigidbody in debrisRigidbodies)
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debrisRigidbody.AddExplosionForce(impact.AdditionalForce, impact.AdditionalForcePosition, impact.AdditionalForceRadius, 0f);
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}
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}
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}
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}
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}
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