projectile trajectory

2024-04-20 20:27:06 +02:00 · 2024-04-20 20:27:06 +02:00 · ba61a4fe43
parent 60ca297352
commit ba61a4fe43
11 changed files with 560 additions and 75 deletions
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--- a/Assets/Scripts/Tower/AimTower.cs
+++ b/Assets/Scripts/Tower/AimTower.cs
@ -0,0 +1,116 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class AimTower : Tower
+{
+    [SerializeField] protected Barrel barrel;
+    [SerializeField] protected EditableArc horizontalArc;
+    [SerializeField] protected EditableArc verticalArc;
+
+    [Header("Trajectory")]
+    [SerializeField] private float spaceBetweenGhosts = 0.5f;
+    [SerializeField] private int trajectoryBounces = 3;
+    private const float k_trajectory_maxdist = 100f;
+    private List<GameObject> ghosts = new();
+    [SerializeField] private GameObject ghostPrefab;
+    [SerializeField] private int trajectoryObjectPoolSize = 25;
+    private int poolIdx = 0;
+
+    public Vector3 AimDirection => barrel.transform.forward;
+    public Vector2 HorizontalRotationMinMax => horizontalArc.RotationMinMax;
+    public Vector2 VerticalRotationMinMax => verticalArc.RotationMinMax;
+    public float HorizontalRotation => horizontalArc.Value;
+    public float VerticalRotation => verticalArc.Value;
+
+
+    protected override void Awake()
+    {
+        horizontalArc.Value.AddListener(UpdateBarrelRotation);
+        verticalArc.Value.AddListener(UpdateBarrelRotation);
+
+        horizontalArc.Value.AddListener(UpdateTrajectory);
+        verticalArc.Value.AddListener(UpdateTrajectory);
+
+        horizontalArc.Value.AddListener(SnapVerticalToHorizontal);
+
+        UpdateBarrelRotation();
+        UpdateTrajectory();
+    }
+
+    protected override void OnDestroy()
+    {
+        horizontalArc.Value.RemoveListener(UpdateBarrelRotation);
+        verticalArc.Value.RemoveListener(UpdateBarrelRotation);
+        horizontalArc.Value.RemoveListener(SnapVerticalToHorizontal);
+    }
+
+    private void UpdateBarrelRotation(float unused) => UpdateBarrelRotation();
+
+    // Rotate barrel to match rotation
+    private void UpdateBarrelRotation()
+    {
+        barrel.transform.localRotation = Quaternion.Euler(-verticalArc.Value, horizontalArc.Value, 0f);
+    }
+
+    private void SnapVerticalToHorizontal(float horizontalAngle)
+    {
+        verticalArc.transform.rotation = Quaternion.Euler(verticalArc.transform.rotation.eulerAngles.x, horizontalAngle, verticalArc.transform.rotation.eulerAngles.z);
+    }
+
+    private void UpdateTrajectory(float unused) => UpdateTrajectory();
+
+    private void UpdateTrajectory()
+    {
+        foreach (var ghost in ghosts)
+        {
+            ghost.SetActive(false);
+        }
+
+        Vector3 origin = barrel.Tip.position;
+        Vector3 dir = barrel.transform.forward;
+        List<Vector3> pointsInTrajectory = new();
+        pointsInTrajectory.Add(origin);
+        for (int i = 0; i < trajectoryBounces; i++)
+        {
+            Debug.DrawRay(origin, dir.normalized * k_trajectory_maxdist, Color.red, 5f);
+            RaycastHit hit;
+            if (!Physics.Raycast(origin, dir, out hit, k_trajectory_maxdist))
+                break;
+
+            pointsInTrajectory.Add(hit.point);
+            dir = Vector3.Reflect(dir, hit.normal);
+            origin = hit.point;
+        }
+
+        // Build trajectory
+        for (int i = 0; i < pointsInTrajectory.Count - 1; i++)
+        {
+            Vector3 point1 = pointsInTrajectory[i];
+            Vector3 point2 = pointsInTrajectory[i + 1];
+
+            Vector3 trajDir = (point2 - point1).normalized;
+            float dist = Vector3.Distance(point1, point2);
+            for (float j = 0; j < dist; j += spaceBetweenGhosts)
+            {
+                Vector3 ghostPos = point1 + trajDir * j;
+
+                // Use object pool or spawn new
+                if (ghosts.Count >= trajectoryObjectPoolSize)
+                {
+                    ghosts[poolIdx].transform.position = ghostPos;
+                    ghosts[poolIdx].SetActive(true);
+                    poolIdx = (poolIdx + 1) % trajectoryObjectPoolSize;
+                    Debug.Log($"pool idx: {poolIdx}");
+                }
+                else
+                {
+                    var ghost = Instantiate(ghostPrefab);
+                    ghost.transform.position = ghostPos;
+                    ghost.transform.parent = transform;
+                    ghosts.Add(ghost);
+                }
+            }
+        }
+    }
+}
--- a/Assets/Scripts/Tower/AimTower.cs.meta
+++ b/Assets/Scripts/Tower/AimTower.cs.meta
@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 07497cc2771c1090bb0a07e731976e15
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
--- a/Assets/Scripts/Tower/ProjectileTower.cs
+++ b/Assets/Scripts/Tower/ProjectileTower.cs
@ -4,26 +4,13 @@ using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.Assertions;

-public class ProjectileTower : Tower
+public class ProjectileTower : AimTower
 {
-    [SerializeField] protected EditableArc horizontalArc;
-    [SerializeField] protected EditableArc verticalArc;
-
    [SerializeField, Range(0.01f, 20f)] private float attackSecondsDelay = 1f;
    [SerializeField] private ProjectilePattern[] projectileSequence;
-    [SerializeField] private Barrel barrel;
-    [SerializeField] private LineRenderer trajectory;
-    [SerializeField] private int trajectoryBounces = 2;
-    private const float k_trajectory_maxdist = 100f;

    private ProjectileSpawner projectileSpawner;

-    public Vector3 AimDirection => barrel.transform.forward;
-    public Vector2 HorizontalRotationMinMax => horizontalArc.RotationMinMax;
-    public Vector2 VerticalRotationMinMax => verticalArc.RotationMinMax;
-    public float HorizontalRotation => horizontalArc.Value;
-    public float VerticalRotation => verticalArc.Value;
-
    protected override void Awake()
    {
        base.Awake();
@ -31,74 +18,18 @@ public class ProjectileTower : Tower
        projectileSpawner = GetComponent<ProjectileSpawner>();
        Assert.IsNotNull(projectileSpawner);

-        horizontalArc.Value.AddListener(UpdateBarrelRotation);
-        verticalArc.Value.AddListener(UpdateBarrelRotation);
-
-        horizontalArc.Value.AddListener(UpdateTrajectory);
-        verticalArc.Value.AddListener(UpdateTrajectory);
-
-        horizontalArc.Value.AddListener(SnapVerticalToHorizontal);
-
-        UpdateBarrelRotation();
-        UpdateTrajectory();
        StartCoroutine(AttackLoop());
    }

-    private void SnapVerticalToHorizontal(float horizontalAngle)
-    {
-        verticalArc.transform.rotation = Quaternion.Euler(verticalArc.transform.rotation.eulerAngles.x, horizontalAngle, verticalArc.transform.rotation.eulerAngles.z);
-    }
-
-    private void UpdateTrajectory(float unused) => UpdateTrajectory();
-
-    private void UpdateTrajectory()
-    {
-        if (trajectory == null) return;
-
-        Vector3 origin = barrel.Tip.position;
-        Vector3 dir = barrel.transform.forward;
-        List<Vector3> pointsInTrajectory = new();
-        pointsInTrajectory.Add(origin);
-        for (int i = 0; i < trajectoryBounces; i++)
-        {
-            Debug.DrawRay(origin, dir.normalized * k_trajectory_maxdist, Color.red, 5f);
-            RaycastHit hit;
-            if (!Physics.Raycast(origin, dir, out hit, k_trajectory_maxdist))
-                break;
-
-            pointsInTrajectory.Add(hit.point);
-            dir = Vector3.Reflect(dir, hit.normal);
-            origin = hit.point;
-        }
-
-        trajectory.positionCount = pointsInTrajectory.Count;
-        trajectory.SetPositions(pointsInTrajectory.ToArray());
-    }
-
-    protected override void OnDestroy()
-    {
-        horizontalArc.Value.RemoveListener(UpdateBarrelRotation);
-        verticalArc.Value.RemoveListener(UpdateBarrelRotation);
-        horizontalArc.Value.RemoveListener(SnapVerticalToHorizontal);
-    }

    private IEnumerator AttackLoop()
    {
        do {
            yield return new WaitForSeconds(attackSecondsDelay);
-            UpdateBarrelRotation();
            Debug.DrawRay(transform.position, horizontalArc.ToKnobVector, Color.red, attackSecondsDelay);
            Debug.DrawRay(transform.position, verticalArc.ToKnobVector, Color.green, attackSecondsDelay);
            Debug.DrawRay(transform.position, AimDirection, Color.yellow, attackSecondsDelay);
            projectileSpawner.RunBulletSequence(barrel.transform.position, transform.up, AimDirection, projectileSequence);
        } while (true);
    }
-
-    private void UpdateBarrelRotation(float unused) => UpdateBarrelRotation();
-
-    // Rotate barrel to match rotation
-    private void UpdateBarrelRotation()
-    {
-        barrel.transform.localRotation = Quaternion.Euler(-verticalArc.Value, horizontalArc.Value, 0f);
-    }
 }