62 lines
2.3 KiB
C#
62 lines
2.3 KiB
C#
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using UnityEngine;
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public class LockObjectRotation : MonoBehaviour
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{
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public bool mouseMovementOn = false;
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[SerializeField] private float maxX = 30f; // Max rotation
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[SerializeField] private float maxY = 30f; // Max rotation
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[SerializeField] private Vector3 mousePosition; // last position of mouse
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[SerializeField] private float speed = 2160f; // speed of rotation
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[SerializeField] private float startX; // Starting rotation
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[SerializeField] private float startY; // Starting rotation
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void Start()
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{
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startX = GetAngle(transform.localEulerAngles.x);
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startY = GetAngle(transform.localEulerAngles.y);
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}
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void Update()
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{
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MouseMovement();
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mousePosition = Camera.main.ScreenToViewportPoint(Input.mousePosition); // Save mouse position every frame.
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}
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private void MouseMovement()
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{
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// If we are holding down the left mouse button...
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if (Input.GetMouseButton(0) || mouseMovementOn)
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{
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// Grab the new position of the mouse, 0,0 - 1,1
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Vector3 newPosition = Camera.main.ScreenToViewportPoint(Input.mousePosition);
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// Compute the delta in the x and y positions. Do inversion for the yDelta. Note X/Y are flipped.
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float horDelta = -(newPosition.x - mousePosition.x) * speed * Time.deltaTime;
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float verDelta = (newPosition.y - mousePosition.y) * speed * Time.deltaTime;
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// Make sure we don't go over our max range
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if (GetAngle(transform.localEulerAngles.x) + verDelta > startX + maxX || GetAngle(transform.localEulerAngles.x) + verDelta < startX - maxX)
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verDelta = 0;
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if (GetAngle(transform.localEulerAngles.y) + horDelta > startY + maxY || GetAngle(transform.localEulerAngles.y) + horDelta < startY - maxY)
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horDelta = 0;
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// Compute & assign the new angle
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Vector3 newAngles = new Vector3(transform.localEulerAngles.x + verDelta,
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transform.localEulerAngles.y + horDelta, transform.localEulerAngles.z);
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transform.localEulerAngles = newAngles;
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}
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}
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private float GetAngle(float eulerAngle)
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{
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float angle = eulerAngle;
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angle %= 360;
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if (angle > 180)
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angle -= 360;
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return angle;
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}
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}
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