91 lines
3.3 KiB
C#
91 lines
3.3 KiB
C#
using System;
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using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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using UnityEngine.Assertions;
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[RequireComponent(typeof(ProjectileSpawner))]
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public class ProjectileTower : Tower
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{
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[SerializeField, Range(0.01f, 20f)] private float attackSecondsDelay = 1f;
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[SerializeField] private ProjectilePattern[] projectileSequence;
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[SerializeField] private Barrel barrel;
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[SerializeField] private LineRenderer trajectory;
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[SerializeField] private int trajectoryBounces = 2;
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private const float k_trajectory_maxdist = 100f;
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private ProjectileSpawner projectileSpawner;
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public Vector3 AimDirection => transform.TransformVector(transform.InverseTransformVector(horizontalArc.ToKnobVector) + transform.InverseTransformVector(verticalArc.ToKnobVector));
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protected override void Awake()
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{
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base.Awake();
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projectileSpawner = GetComponent<ProjectileSpawner>();
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Assert.IsNotNull(projectileSpawner);
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horizontalArc.Value.AddListener(UpdateBarrelRotation);
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verticalArc.Value.AddListener(UpdateBarrelRotation);
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horizontalArc.Value.AddListener(UpdateTrajectory);
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verticalArc.Value.AddListener(UpdateTrajectory);
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UpdateBarrelRotation();
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UpdateTrajectory();
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StartCoroutine(AttackLoop());
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}
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private void UpdateTrajectory(float unused) => UpdateTrajectory();
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private void UpdateTrajectory()
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{
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if (trajectory == null) return;
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Vector3 origin = barrel.Tip.position;
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Vector3 dir = barrel.transform.forward;
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List<Vector3> pointsInTrajectory = new();
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pointsInTrajectory.Add(origin);
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for (int i = 0; i < trajectoryBounces; i++)
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{
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Debug.DrawRay(origin, dir.normalized * k_trajectory_maxdist, Color.red, 5f);
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RaycastHit hit;
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if (!Physics.Raycast(origin, dir, out hit, k_trajectory_maxdist))
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break;
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pointsInTrajectory.Add(hit.point);
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dir = Vector3.Reflect(dir, hit.normal);
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origin = hit.point;
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}
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trajectory.positionCount = pointsInTrajectory.Count;
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trajectory.SetPositions(pointsInTrajectory.ToArray());
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}
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protected override void OnDestroy()
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{
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horizontalArc.Value.RemoveListener(UpdateBarrelRotation);
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verticalArc.Value.RemoveListener(UpdateBarrelRotation);
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}
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private IEnumerator AttackLoop()
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{
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do {
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yield return new WaitForSeconds(attackSecondsDelay);
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UpdateBarrelRotation();
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Debug.DrawRay(transform.position, horizontalArc.ToKnobVector, Color.red, attackSecondsDelay);
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Debug.DrawRay(transform.position, verticalArc.ToKnobVector, Color.green, attackSecondsDelay);
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Debug.DrawRay(transform.position, AimDirection, Color.yellow, attackSecondsDelay);
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projectileSpawner.RunBulletSequence(transform.position, transform.up, AimDirection, projectileSequence);
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} while (true);
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}
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private void UpdateBarrelRotation(float unused) => UpdateBarrelRotation();
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// Rotate barrel to match rotation
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private void UpdateBarrelRotation()
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{
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barrel.transform.localRotation = Quaternion.Euler(verticalArc.Value, horizontalArc.Value, 0f);
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}
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}
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