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95 lines
4.2 KiB
C#
95 lines
4.2 KiB
C#
// Animancer // Copyright 2020 Kybernetik //
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#pragma warning disable CS0618 // Type or member is obsolete (for Mixers in Animancer Lite).
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#pragma warning disable CS0649 // Field is never assigned to, and will always have its default value.
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using UnityEngine;
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namespace Animancer.Examples.AnimatorControllers.GameKit
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{
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[AddComponentMenu(Strings.MenuPrefix + "Examples/Game Kit - Flinch State")]
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[HelpURL(Strings.APIDocumentationURL + ".Examples.AnimatorControllers.GameKit/FlinchState")]
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public sealed class FlinchState : CreatureState
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{
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/************************************************************************************************************************/
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[SerializeField] private MixerState.Transition2D _Animation;
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[SerializeField] private LayerMask _EnemyLayers;
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[SerializeField] private float _EnemyCheckRadius = 1;
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/************************************************************************************************************************/
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private void Awake()
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{
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_Animation.Events.Sequence.OnEnd = Creature.ForceEnterIdleState;
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}
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/************************************************************************************************************************/
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public void OnDamageReceived()
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{
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Creature.StateMachine.ForceSetState(this);
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}
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/************************************************************************************************************************/
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private void OnEnable()
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{
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Creature.ForwardSpeed = 0;
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Creature.Animancer.Play(_Animation);
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var direction = DetermineHitDirection();
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// Once we know which direction the hit came from, we need to convert it to be relative to the model.
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// The Parameter X represents left/right so we project the direction onto the right vector.
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// The Parameter Y represents forward/back so we project the direction onto the forward vector.
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_Animation.State.Parameter = new Vector2(
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Vector3.Dot(Creature.Animancer.transform.right, direction),
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Vector3.Dot(Creature.Animancer.transform.forward, direction));
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}
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/************************************************************************************************************************/
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/// <summary>
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/// Since Animancer does not actually depend on the 3D Game Kit (except for this example), we cannot reference
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/// any of its scripts from here so we cannot use their <c>IMessageReceiver</c> system which informs the
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/// defending creature where the incoming hit came from.
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/// <para></para>
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/// So instead we just find the closest enemy and use that as the direction.
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/// </summary>
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private Vector3 DetermineHitDirection()
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{
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var position = Creature.transform.position;
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var closestEnemySquaredDistance = float.PositiveInfinity;
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var closestEnemyDirection = Vector3.zero;
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var enemies = Physics.OverlapSphere(position, _EnemyCheckRadius, _EnemyLayers);
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for (int i = 0; i < enemies.Length; i++)
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{
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var direction = enemies[i].transform.position - position;
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var squaredDistance = direction.magnitude;
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if (closestEnemySquaredDistance > squaredDistance)
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{
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closestEnemySquaredDistance = squaredDistance;
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closestEnemyDirection = direction;
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}
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}
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return closestEnemyDirection.normalized;
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}
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/************************************************************************************************************************/
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public override bool FullMovementControl { get { return false; } }
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/************************************************************************************************************************/
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public override bool CanExitState(CreatureState nextState)
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{
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return false;
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}
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/************************************************************************************************************************/
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}
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}
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