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Assets/TcgEngine/Scripts/GameClient/GameCamera.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace TcgEngine.Client
+{
+    /// <summary>
+    /// Game Camera has some useful features such as shake
+    /// Or raycasting the mouse to a world/screen position
+    /// </summary>
+
+    public class GameCamera : MonoBehaviour
+    {
+        private float shake_timer = 0f;
+        private float shake_intensity = 1f;
+
+        private Camera cam;
+        private Vector3 shake_vector = Vector3.zero;
+        private Vector3 start_pos;
+
+        private static GameCamera instance;
+
+        void Awake()
+        {
+            instance = this;
+            start_pos = transform.position;
+            cam = GetComponent<Camera>();
+        }
+
+        void Update()
+        {
+            //Shake FX
+            if (shake_timer > 0f)
+            {
+                shake_timer -= Time.deltaTime;
+                shake_vector = new Vector3(Mathf.Cos(shake_timer * Mathf.PI * 16f) * 0.02f, Mathf.Sin(shake_timer * Mathf.PI * 12f) * 0.01f, 0f);
+                transform.position = start_pos + shake_vector * shake_intensity;
+            }
+            else
+            {
+                transform.position = start_pos;
+            }
+        }
+
+        public void Shake(float intensity = 1f, float duration = 1f)
+        {
+            shake_intensity = intensity;
+            shake_timer = duration;
+        }
+
+        public Vector2 MouseToPercent(Vector3 mouse_pos)
+        {
+            float x = mouse_pos.x / Screen.width;
+            float y = mouse_pos.y / Screen.height;
+            return new Vector2(x, y);
+        }
+
+        public Ray MouseToRay(Vector3 mouse_pos)
+        {
+            return cam.ScreenPointToRay(mouse_pos);
+        }
+
+        public Vector3 MouseToWorld(Vector2 mouse_pos, float distance = 10f)
+        {
+            Vector3 wpos = cam.ScreenToWorldPoint(new Vector3(mouse_pos.x, mouse_pos.y, distance));
+            return wpos;
+        }
+
+        public static Camera GetCamera()
+        {
+            if (instance != null)
+                return instance.cam;
+            return null;
+        }
+
+        public static GameCamera Get()
+        {
+            return instance;
+        }
+    }
+}