1 files changed, 159 insertions, 0 deletions
diff --git a/Assets/Scripts/DamageVolumeSystem/DamageGenerator.cs b/Assets/Scripts/DamageVolumeSystem/DamageGenerator.cs
new file mode 100644
index 0000000..ca50a26
--- /dev/null
+++ b/Assets/Scripts/DamageVolumeSystem/DamageGenerator.cs
@@ -0,0 +1,159 @@
+using System;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Serialization;
+
+namespace DamageVolumeSystem
+{
+    [Icon("Assets/Scripts/DamageVolumeSystem/Icon/DamageGenerator.png")]
+    [RequireComponent(typeof(BoxCollider))]
+    [ExecuteAlways]
+    public class DamageGenerator : MonoBehaviour
+    {
+        [HideInInspector] public DamageHost binding;
+
+        // 伤害
+        public int damage = 2500;
+        
+        // 衰减曲线
+        public AnimationCurve falloffCurveByDistance =  AnimationCurve.Linear(0, 1, 1, 0);
+        public AnimationCurve falloffCurveBySpeed =  AnimationCurve.Linear(0, 1, 1, 0);
+
+        // 碰撞体
+        private BoxCollider _collider;
+        
+        // 碰撞时发生伤害
+        public bool emitOnCollide = true;
+        
+        // 扫描到的碰撞体
+        private readonly HashSet<DamageHost> _scannedHosts = new();
+        
+        // 速度缩放
+        private float _speedScale;
+        
+        // 上一帧的位置
+        private Vector3 _lastPosition;
+        
+        private void Start()
+        { 
+            _collider = GetComponent<BoxCollider>(); 
+        }
+
+        private void FixedUpdate()
+        {
+            var p = transform.position;
+            var distanceToLast = Vector3.Distance(p, _lastPosition);
+            var next = falloffCurveBySpeed.Evaluate(1 - Mathf.Clamp01(distanceToLast / 1.5f));
+            _speedScale = 0.5f + next * 2;
+            
+            _lastPosition = p;
+        }
+
+        public void Update()
+        {
+#if UNITY_EDITOR
+            _collider.isTrigger = true;
+            _collider.center = Vector3.zero;
+            _collider.size = transform.lossyScale;
+#endif
+        }
+
+        private void OnTriggerEnter(Collider other)
+        {
+            var damageHost = other.GetComponent<DamageHost>();
+            if (damageHost != null && _scannedHosts.Add(damageHost))
+            {
+                // 碰撞时立刻产生伤害
+                if (emitOnCollide)
+                    Emit();
+            }
+        }
+
+        private void OnTriggerExit(Collider other)
+        {
+            var damageHost = other.GetComponent<DamageHost>();
+            if (damageHost != null && _scannedHosts.Contains(damageHost))
+            {
+                _scannedHosts.Remove(damageHost);
+            }
+        }
+
+        public void Emit()
+        {
+            var pos = transform.position;
+            
+            foreach (var scannedHost in _scannedHosts)
+            {
+                var selfGroup = binding?.group ?? 12;
+                if (selfGroup == scannedHost.group)
+                    continue;
+                
+                var posTarget = scannedHost.transform.position;
+                var distance = Vector3.Distance(pos, posTarget);
+                var percent = Mathf.Clamp01(distance / 2);
+
+                var direction = (posTarget - pos).normalized;
+                
+                // 用衰减曲线重新映射百分比
+                var rePercent = falloffCurveByDistance.Evaluate(1 - percent);
+                var calcDamage = Mathf.RoundToInt(rePercent * damage * _speedScale);
+                
+                Debug.Log($"[伤害生成器: {gameObject.name}] 对 {scannedHost.name} 造成 {calcDamage} 点伤害 (距离衰减 {percent} -> {rePercent}, 速度增益 {_speedScale})");
+                scannedHost.onDamageReceived.Invoke(new Damage
+                {
+                    Group = binding?.group ?? 12,
+                    Force = calcDamage,
+                    Direction = direction,
+                });
+            }
+        }
+
+        # region Display
+        
+        private void OnDrawGizmos()
+        {
+            var t = transform;
+            Gizmos.color = GetColorByGroupId(binding?.group?? 12);
+            
+            // 画指向线
+            foreach (var scannedHost in _scannedHosts)
+            {
+                Gizmos.DrawLine(scannedHost.transform.position, t.position);
+            }
+            
+            // 画生成框
+            Gizmos.matrix = t.localToWorldMatrix;
+            DrawSpecialCube(Vector3.zero, t.lossyScale);
+        }
+
+        private void DrawSpecialCube(Vector3 center, Vector3 size)
+        {
+            var color = Gizmos.color;
+            Gizmos.DrawWireCube(center, size);
+            Gizmos.color = new Color(color.r, color.g, color.b, 0.5f);
+            Gizmos.DrawCube(center, size);
+        }
+
+        private Color GetColorByGroupId(int group)
+        {
+            switch (group)
+            {
+                case 0:  return Color.red;
+                case 1:  return Color.blue;
+                case 2:  return Color.green;
+                case 3:  return Color.yellow;
+                case 4:  return Color.magenta;
+                case 5:  return Color.cyan;
+                case 6:  return new Color(1f, 0.5f, 0f);
+                case 7:  return new Color(0.4f, 0.01f, 0.5f);
+                case 8:  return new Color(0.63f, 0.87f, 0f);
+                case 9:  return new Color(0.98f, 0.67f, 0.91f);
+                case 10: return new Color(0.49f, 0.93f, 0.67f);
+                case 11: return new Color(0.11f, 0.55f, 0.8f);
+                default: return Color.white;
+            }
+        }
+        
+        #endregion
+    }
+}