Initial commit

Assets/Scripts/CameraHandler.cs

@@ -0,0 +1,121 @@
+using UnityEngine;
+using UnityEngine.InputSystem;
+
+public class CameraHandler : MonoBehaviour
+{
+    bool isDragging = false;
+    Vector2 pointerDownPos;
+    bool pointerDown = false;
+    float prevPinchDistance = -1;
+    Vector3 dragWorldStart;
+
+    void Update()
+    {
+        HandleCameraMovement();
+        HandleZoom();
+    }
+
+    void HandleCameraMovement()
+    {
+        Vector2 inputPos = Vector2.zero;
+        bool pressed = false;
+
+        if (Application.isMobilePlatform && Touchscreen.current != null)
+        {
+            var touch = Touchscreen.current.primaryTouch;
+
+            if (touch.press.isPressed)
+            {
+                inputPos = touch.position.ReadValue();
+                pressed = true;
+            }
+        }
+        else if (Mouse.current != null)
+        {
+            if (Mouse.current.leftButton.isPressed)
+            {
+                inputPos = Mouse.current.position.ReadValue();
+                pressed = true;
+            }
+        }
+
+        if (!pressed)
+        {
+            pointerDown = false;
+            isDragging = false;
+            return;
+        }
+
+        Camera cam = Camera.main;
+
+        if (!pointerDown)
+        {
+            pointerDown = true;
+            pointerDownPos = inputPos;
+
+            dragWorldStart = cam.ScreenToWorldPoint(
+                new Vector3(inputPos.x, inputPos.y, -cam.transform.position.z)
+            );
+
+            return;
+        }
+
+        if (!isDragging)
+        {
+            if (Vector2.Distance(inputPos, pointerDownPos) < 5f)
+                return;
+
+            isDragging = true;
+        }
+
+        Vector3 currentWorld = cam.ScreenToWorldPoint(
+            new Vector3(inputPos.x, inputPos.y, -cam.transform.position.z)
+        );
+
+        Vector3 movement = dragWorldStart - currentWorld;
+        cam.transform.position += movement;
+    }
+
+    void HandleZoom()
+    {
+        if (Application.isMobilePlatform && Touchscreen.current != null)
+        {
+            var touches = Touchscreen.current.touches;
+            if (touches.Count >= 2)
+            {
+                Vector2 pos1 = touches[0].position.ReadValue();
+                Vector2 pos2 = touches[1].position.ReadValue();
+
+                if (touches[0].press.isPressed && touches[1].press.isPressed)
+                {
+                    float currentDist = Vector2.Distance(pos1, pos2);
+                    if (prevPinchDistance > 0)
+                    {
+                        float diff = currentDist - prevPinchDistance;
+                        Camera.main.orthographicSize = Mathf.Clamp(Camera.main.orthographicSize - (diff * 0.1f), 1f, 100f);
+                    }
+                    prevPinchDistance = currentDist;
+                    return;
+                }
+            }
+            prevPinchDistance = -1;
+        }
+        else
+        {
+            float scroll = Mouse.current.scroll.ReadValue().y;
+            if (scroll != 0)
+            {
+                if (Keyboard.current.leftCtrlKey.isPressed)
+                {
+                    Camera.main.orthographicSize = Mathf.Clamp(Camera.main.orthographicSize - scroll, 1f, 100f);
+                }
+                else
+                {
+                    var pos = Camera.main.transform.position;
+                    pos.y += scroll * 5f;
+                    Camera.main.transform.position = pos;
+                }
+            }
+        }
+    }
+}