Add health system

1 files changed, 95 insertions, 0 deletions

diff --git a/Assets/Scripts/DamageVolumeSystem/HealthData.cs b/Assets/Scripts/DamageVolumeSystem/HealthData.cs
new file mode 100644
index 0000000..8da1e5f
--- /dev/null
+++ b/Assets/Scripts/DamageVolumeSystem/HealthData.cs
@@ -0,0 +1,95 @@
+using System;
+using UnityEngine;
+using UnityEngine.Events;
+
+namespace DamageVolumeSystem
+{
+    [Icon("Assets/Scripts/DamageVolumeSystem/Icon/HealthData.png")]
+    public class HealthData : MonoBehaviour
+    {
+        public int defaultHealth = 5000;
+        public int maxHealth = 5000;
+
+        public UnityEvent<Damage> onAid = new();
+        public UnityEvent<Damage> onHurt = new();
+        public UnityEvent onDead = new();
+    
+        private int _health;
+
+        public int Health
+        {
+            get => _health;
+            set
+            {
+                var offset = value - _health;
+                var offsetAbs = Mathf.Abs(offset);
+                switch (offset)
+                {
+                    case > 0:
+                        Aid(new Damage
+                        {
+                            Group = 12,
+                            Force = offsetAbs,
+                            Direction = Vector3.zero
+                        });
+                        return;
+                    case < 0:
+                        Hurt(new Damage
+                        {
+                            Group = 12,
+                            Force = offsetAbs,
+                            Direction = Vector3.zero
+                        });
+                        break;
+                }
+            }
+        }
+
+        private void Start()
+        {
+            _health = defaultHealth;
+        }
+
+        private void Reset()
+        {
+            var newHealth = Mathf.Clamp(defaultHealth, 0, maxHealth);
+            SetHealth(newHealth);
+        }
+
+        public void Aid(Damage damage)
+        {
+            AddHealth(damage.Force);
+            onAid.Invoke(damage);
+        }
+
+        public void Hurt(Damage damage)
+        {
+            ReduceHealth(damage.Force);
+            onHurt.Invoke(damage);
+
+            if (_health <= 0)
+                onDead.Invoke();
+        }
+        
+        public static HealthData operator +(HealthData a, Damage b)
+        {
+            a.Aid(b);
+            return a;
+        }
+        
+        public static HealthData operator -(HealthData a, Damage b)
+        {
+            a.Hurt(b);
+            return a;
+        }
+
+        private void SetHealth(int newHealth)
+            => _health = Mathf.Clamp(newHealth, 0, maxHealth);
+        
+        private void AddHealth(int newHealth)
+            => _health = Mathf.Clamp(_health + newHealth, 0, maxHealth);
+        
+        private void ReduceHealth(int newHealth)
+            => _health = Mathf.Clamp(_health - newHealth, 0, maxHealth);
+    }
+}