using SUISS.Core;
using UnityEngine;

namespace SUISSEngine
{
    public class IslandInput : MonoBehaviour
    {
        private enum FingerPhase
        {
            Began,
            Moved,
            Ended
        }

        private struct Finger
        {
            public int id;

            public FingerPhase phase;

            public Vector2 startPosition;

            public float startPositionTime;

            public Vector2 previousPosition;

            public float previousPositionTime;

            public Vector2 currentPosition;

            public float currentPositionTime;

            public Vector2[] velocities;

            public int velocityIndex;

            public int velocityCount;

            public float distance;

            public bool hasMoved;

            public int lastSeenFrameIndex;
        }

        private enum State
        {
            Idle,
            Panning,
            Pinching,
            BuildingPanning
        }

        private enum CameraAnimation
        {
            None,
            Target,
            Deceleration
        }

        private const int InvalidFingerID = -1;

        private const int MouseFingerID = int.MaxValue;

        private const float MinMovementDistance = 0.15f;

        private const int VelocityBufferSize = 5;

        private const float MouseScrollSensitivity = 1.5f;

        public IsometricIsland island;

        [SerializeField]
        private float _maxOrthographicSizeFactorTablet = 0.9f;

        [SerializeField]
        private float _maxOrthographicSizeFactorPhone = 0.8f;

        private bool newTouchDetected;

        private bool _hasTouch;

        private int fingerCount;

        private Finger[] fingers;

        private State state;

        private int panningFingerID;

        private int pinchingFingerID;

        private Vector2 buildingPanningOffset;

        private int currentFrameIndex;

        private CameraAnimation cameraAnimation;

        private Vector2 cameraAnimationSource;

        private Vector2 cameraAnimationDestination;

        private float cameraAnimationStart;

        private float cameraAnimationDuration;

        private AnimationCurve cameraAnimationCurve;

        private Vector2 cameraAnimationVelocity;

        private float _maxOrthographicSizeFactor;

        private float _minPixelsPerInch;

        private float _maxPixelsPerInch;

        private int _mouseSkewGauge;

        protected bool _activeTouches;

        protected bool _activeMouse;

        protected virtual void Awake()
        {
            newTouchDetected = false;
            _activeTouches = false;
            _activeMouse = false;
            fingerCount = 0;
            fingers = new Finger[2];
            for (int i = 0; i < fingers.Length; i++)
            {
                fingers[i].id = -1;
                fingers[i].velocities = new Vector2[5];
            }
            state = State.Idle;
            panningFingerID = -1;
            pinchingFingerID = -1;
            _mouseSkewGauge = 0;
            cameraAnimation = CameraAnimation.None;
            {
                _maxOrthographicSizeFactor = _maxOrthographicSizeFactorTablet;
            }
            _hasTouch = true;
            IsometricIsland.IslandLoadedEvent += OnIslandLoadedEvent;
            IsometricIsland.IslandUnloadedEvent += OnIslandUnloadedEvent;
            if (IsometricIsland.Current != null)
            {
                OnIslandLoadedEvent(IsometricIsland.Current);
            }
        }

        protected virtual void OnDestroy()
        {
            IsometricIsland.IslandLoadedEvent -= OnIslandLoadedEvent;
            IsometricIsland.IslandUnloadedEvent -= OnIslandUnloadedEvent;
        }

        protected void OnIslandLoadedEvent(IsometricIsland island)
        {
            this.island = island;
            UpdateMinMaxPerInch();
            SetInitialCameraBounds();
        }

        protected void OnIslandUnloadedEvent()
        {
            island = null;
            CameraAnimation cameraAnimation = this.cameraAnimation;
            if (cameraAnimation == CameraAnimation.Target || cameraAnimation == CameraAnimation.Deceleration)
            {
                this.cameraAnimation = CameraAnimation.None;
                if (SingletonMonobehaviour<FPSLimiter>.IsAvailable)
                {
                    SingletonMonobehaviour<FPSLimiter>.Instance.PopUnlimitedFPSRequest(this);
                }
            }
        }

        protected virtual void Update()
        {
            currentFrameIndex++;
            if (ShouldProcessInput())
            {
                ProcessInput();
            }
            if (cameraAnimation == CameraAnimation.Target)
            {
                Camera islandCamera = island.islandCamera;
                Vector3 position = islandCamera.transform.position;
                float num = cameraAnimationCurve.Evaluate(Time.realtimeSinceStartup);
                if (num >= 1f)
                {
                    position.x = cameraAnimationDestination.x;
                    position.y = cameraAnimationDestination.y;
                    cameraAnimation = CameraAnimation.None;
                    SingletonMonobehaviour<FPSLimiter>.Instance.PopUnlimitedFPSRequest(this);
                }
                else
                {
                    position.x = cameraAnimationSource.x + (cameraAnimationDestination.x - cameraAnimationSource.x) * num;
                    position.y = cameraAnimationSource.y + (cameraAnimationDestination.y - cameraAnimationSource.y) * num;
                }
                islandCamera.transform.position = position;
            }
            if (!_activeTouches && cameraAnimation == CameraAnimation.Deceleration)
            {
                Camera islandCamera2 = island.islandCamera;
                float num2 = Time.realtimeSinceStartup - cameraAnimationStart;
                float num3 = Mathf.Pow(0.05f, num2);
                Vector3 extents = island.islandWorldBounds.extents;
                float num4 = extents.y / islandCamera2.orthographicSize;
                cameraAnimationVelocity *= num3;
                float num5 = Mathf.Sqrt(cameraAnimationVelocity.x * cameraAnimationVelocity.x + cameraAnimationVelocity.y * cameraAnimationVelocity.y);
                Vector3 position2 = islandCamera2.transform.position;
                position2.x += cameraAnimationVelocity.x / num4 * num2;
                position2.y += cameraAnimationVelocity.y / num4 * num2;
                islandCamera2.transform.position = position2;
                RestrictCameraToBounds();
                if (num5 < 10f)
                {
                    cameraAnimation = CameraAnimation.None;
                    SingletonMonobehaviour<FPSLimiter>.Instance.PopUnlimitedFPSRequest(this);
                }
                else
                {
                    cameraAnimationStart = Time.realtimeSinceStartup;
                }
            }
            else if (newTouchDetected)
            {
                CancelCameraAnimation();
            }
        }

        public void SetInitialCameraBounds()
        {
            island.islandCamera.orthographicSize = island.preferedInitialZoomLevel;
            CenterViewOn(GetInitialCameraPosition(), animated: false);
            RestrictCameraToBounds();
        }

        public void RestrictCameraToBounds()
        {
            Camera islandCamera = island.islandCamera;
            float num = islandCamera.orthographicSize * 2f * island.pixelsPerUnit / islandCamera.pixelRect.height * island.dpi;
            if (num < _minPixelsPerInch)
            {
                islandCamera.orthographicSize = _minPixelsPerInch * islandCamera.pixelRect.height / (2f * island.pixelsPerUnit * island.dpi);
            }
            else if (num > _maxPixelsPerInch)
            {
                islandCamera.orthographicSize = _maxPixelsPerInch * islandCamera.pixelRect.height / (2f * island.pixelsPerUnit * island.dpi);
            }
            Bounds islandWorldBounds = island.islandWorldBounds;
            Vector3 position = islandCamera.transform.position;
            float num2 = position.x - islandCamera.orthographicSize * islandCamera.aspect;
            Vector3 min = islandWorldBounds.min;
            if (num2 < min.x)
            {
                Vector3 min2 = islandWorldBounds.min;
                position.x = min2.x + islandCamera.orthographicSize * islandCamera.aspect;
            }
            float num3 = position.y - islandCamera.orthographicSize;
            Vector3 min3 = islandWorldBounds.min;
            if (num3 < min3.y)
            {
                Vector3 min4 = islandWorldBounds.min;
                position.y = min4.y + islandCamera.orthographicSize;
            }
            float num4 = position.x + islandCamera.orthographicSize * islandCamera.aspect;
            Vector3 max = islandWorldBounds.max;
            if (num4 > max.x)
            {
                float num5 = islandCamera.orthographicSize * islandCamera.aspect;
                Vector3 extents = islandWorldBounds.extents;
                if (num5 > extents.x)
                {
                    Vector3 center = islandWorldBounds.center;
                    position.x = center.x;
                }
                else
                {
                    Vector3 max2 = islandWorldBounds.max;
                    position.x = max2.x - islandCamera.orthographicSize * islandCamera.aspect;
                }
            }
            float num6 = position.y + islandCamera.orthographicSize;
            Vector3 max3 = islandWorldBounds.max;
            if (num6 > max3.y)
            {
                float orthographicSize = islandCamera.orthographicSize;
                Vector3 extents2 = islandWorldBounds.extents;
                if (orthographicSize > extents2.y)
                {
                    Vector3 center2 = islandWorldBounds.center;
                    position.y = center2.y;
                }
                else
                {
                    Vector3 max4 = islandWorldBounds.max;
                    position.y = max4.y - islandCamera.orthographicSize;
                }
            }
            islandCamera.transform.position = position;
        }

        public void CenterViewOn(GridIndex index, bool animated)
        {
            GridPoint point = new GridPoint(index);
            point.u += 0.5f;
            point.v += 0.5f;
            CenterViewOn(point, animated);
        }

        public void CenterViewOn(GridPoint point, bool animated)
        {
            Vector2 target = (Vector2)island.grid.transform.position + island.grid.GetPositionForGridPoint(point);
            CenterViewOn(target, animated);
        }

        public void CenterViewOn(GameObject gameObject, bool animated)
        {
            SpriteRenderer component = gameObject.GetComponent<SpriteRenderer>();
            if (component == null)
            {
                CenterViewOn(gameObject.transform.position, animated);
            }
            else
            {
                CenterViewOn(component.bounds.center, animated);
            }
        }

        public void CenterViewOn(Vector2 target, bool animated)
        {
            if (state != 0)
            {
                return;
            }
            Camera islandCamera = island.islandCamera;
            Bounds islandWorldBounds = island.islandWorldBounds;
            Vector2 vector = default(Vector2);
            vector.x = islandCamera.orthographicSize * islandCamera.aspect;
            vector.y = islandCamera.orthographicSize;
            float x = vector.x;
            Vector3 extents = islandWorldBounds.extents;
            if (x > extents.x)
            {
                Vector3 center = islandWorldBounds.center;
                target.x = center.x;
            }
            else
            {
                float num = target.x - vector.x;
                Vector3 min = islandWorldBounds.min;
                if (num < min.x)
                {
                    Vector3 min2 = islandWorldBounds.min;
                    target.x = min2.x + vector.x;
                }
                else
                {
                    float num2 = target.x + vector.x;
                    Vector3 max = islandWorldBounds.max;
                    if (num2 > max.x)
                    {
                        Vector3 max2 = islandWorldBounds.max;
                        target.x = max2.x - vector.x;
                    }
                }
            }
            float y = vector.y;
            Vector3 extents2 = islandWorldBounds.extents;
            if (y > extents2.y)
            {
                Vector3 center2 = islandWorldBounds.center;
                target.y = center2.y;
            }
            else
            {
                float num3 = target.y - vector.y;
                Vector3 min3 = islandWorldBounds.min;
                if (num3 < min3.y)
                {
                    Vector3 min4 = islandWorldBounds.min;
                    target.y = min4.y + vector.y;
                }
                else
                {
                    float num4 = target.y + vector.y;
                    Vector3 max3 = islandWorldBounds.max;
                    if (num4 > max3.y)
                    {
                        Vector3 max4 = islandWorldBounds.max;
                        target.y = max4.y - vector.y;
                    }
                }
            }
            if (animated)
            {
                cameraAnimationSource = islandCamera.transform.position;
                cameraAnimationDestination = target;
                cameraAnimationStart = Time.realtimeSinceStartup;
                cameraAnimationDuration = 0.5f;
                cameraAnimationCurve = AnimationCurve.EaseInOut(cameraAnimationStart, 0f, cameraAnimationStart + cameraAnimationDuration, 1f);
                cameraAnimationCurve.preWrapMode = WrapMode.ClampForever;
                cameraAnimationCurve.postWrapMode = WrapMode.ClampForever;
                cameraAnimation = CameraAnimation.Target;
                SingletonMonobehaviour<FPSLimiter>.Instance.PushUnlimitedFPSRequest(this);
            }
            else
            {
                Vector3 position = islandCamera.transform.position;
                position.x = target.x;
                position.y = target.y;
                islandCamera.transform.position = position;
            }
        }

        public void CancelCameraAnimation()
        {
            cameraAnimation = CameraAnimation.None;
            SingletonMonobehaviour<FPSLimiter>.Instance.PopUnlimitedFPSRequest(this);
        }

        protected virtual bool ShouldProcessInput()
        {
            return true;
        }

        protected void ProcessInput()
        {
            ProcessTouches();
            ProcessMouse();
            ProcessFingers();
            EndFingers();
        }

        protected virtual bool HandleTapAt(Vector2 position)
        {
            if (island == null || island.islandCamera == null)
            {
                return false;
            }
            Vector2 vector = island.islandCamera.ScreenToWorldPoint(position);
            if (island.builder != null && (island.builder.isBuilding || island.builder.isBuildingRoad))
            {
                if (island.builder.isBuildingRoad && island.grid != null)
                {
                    GridIndex index = island.grid.ConvertIslandCoordinateToGridIndex(vector);
                    if (index.isInvalid)
                    {
                        return false;
                    }
                    island.builder.UpdateRoad(index);
                    return true;
                }
                return false;
            }
            GameObject closestGameObjectAt = GetClosestGameObjectAt(vector);
            if (island.destroyer != null && island.destroyer.isSelecting && island.grid != null)
            {
                Building building = null;
                if (closestGameObjectAt != null)
                {
                    building = closestGameObjectAt.GetComponent<Building>();
                }
                if (building != null)
                {
                    island.destroyer.ClickedBuilding(building);
                    return true;
                }
                GridIndex index2 = island.grid.ConvertIslandCoordinateToGridIndex(vector);
                if (!index2.isInvalid)
                {
                    GridElement gridElement = island.grid[index2];
                    if (gridElement != null && gridElement.Tile != null)
                    {
                        Road component = gridElement.Tile.GetComponent<Road>();
                        if (component != null)
                        {
                            island.destroyer.ClickedRoad(component);
                            return true;
                        }
                        building = gridElement.Tile.GetComponent<Building>();
                        if (building != null)
                        {
                            island.destroyer.ClickedBuilding(building);
                            return true;
                        }
                    }
                }
            }
            else if (closestGameObjectAt != null)
            {
                Clickable component2 = closestGameObjectAt.GetComponent<Clickable>();
                if (component2 != null)
                {
                    component2.OnClick(component2.gameObject);
                    return true;
                }
            }
            else if (island.builder != null && island.grid != null)
            {
                GridIndex index3 = island.grid.ConvertIslandCoordinateToGridIndex(vector);
                if (!index3.isInvalid)
                {
                    GridElement gridElement2 = island.grid[index3];
                    if (gridElement2 != null)
                    {
                        GridTile tile = gridElement2.Tile;
                        if (tile != null)
                        {
                            Clickable component3 = tile.GetComponent<Clickable>();
                            if (component3 != null)
                            {
                                component3.OnClick(tile.gameObject);
                                return true;
                            }
                        }
                    }
                }
            }
            Boid.RunAwayFrom(island.grid.ConvertIslandCoordinateToGridIndex(vector));
            return false;
        }

        protected GameObject GetClosestGameObjectAt(Vector2 position)
        {
            SpriteRenderer spriteRenderer = null;
            GameObject result = null;
            Collider2D[] array = Physics2D.OverlapPointAll(position);
            foreach (Collider2D collider2D in array)
            {
                SpriteRenderer componentInChildren = collider2D.GetComponentInChildren<SpriteRenderer>();
                if (componentInChildren == null)
                {
                    return collider2D.gameObject;
                }
                if (spriteRenderer == null || componentInChildren.sortingOrder > spriteRenderer.sortingOrder)
                {
                    spriteRenderer = componentInChildren;
                    result = collider2D.gameObject;
                }
            }
            return result;
        }

        protected virtual float GetInitialCameraPPI()
        {
            return (_minPixelsPerInch + _maxPixelsPerInch) / 2f;
        }

        protected virtual Vector2 GetInitialCameraPosition()
        {
            return island.preferedInitialPosition;
        }

        private void ProcessTouches()
        {
            newTouchDetected = false;
            _activeTouches = false;
            if (UnityEngine.Input.touchCount > 0)
            {
                Touch[] touches = Input.touches;
                Touch[] array = touches;
                Vector2 vector = default(Vector2);
                for (int i = 0; i < array.Length; i++)
                {
                    Touch touch = array[i];
                    int num = -1;
                    if (touch.phase == TouchPhase.Began)
                    {
                        newTouchDetected = true;
                        _activeTouches = true;
                        if (fingerCount < fingers.Length && island.islandCamera.pixelRect.Contains(touch.position))
                        {
                            num = fingerCount;
                            fingers[num].id = touch.fingerId;
                            fingers[num].phase = FingerPhase.Began;
                            fingers[num].startPosition = touch.position;
                            fingers[num].startPositionTime = Time.realtimeSinceStartup;
                            fingers[num].previousPosition = touch.position;
                            fingers[num].previousPositionTime = Time.realtimeSinceStartup;
                            fingers[num].hasMoved = false;
                            fingers[num].velocityIndex = -1;
                            fingers[num].velocityCount = 0;
                            fingerCount++;
                        }
                    }
                    else if (touch.phase == TouchPhase.Ended || touch.phase == TouchPhase.Canceled)
                    {
                        num = IndexOfFingerID(touch.fingerId);
                        if (num >= 0)
                        {
                            fingers[num].phase = FingerPhase.Ended;
                        }
                    }
                    else
                    {
                        _activeTouches = true;
                        num = IndexOfFingerID(touch.fingerId);
                    }
                    if (num < 0)
                    {
                        continue;
                    }
                    fingers[num].lastSeenFrameIndex = currentFrameIndex;
                    fingers[num].currentPosition = touch.position;
                    fingers[num].currentPositionTime = Time.realtimeSinceStartup;
                    fingers[num].distance = (fingers[num].currentPosition - fingers[num].startPosition).magnitude;
                    if (!fingers[num].hasMoved && fingers[num].distance > 0.15f * island.dpi)
                    {
                        fingers[num].hasMoved = true;
                        if (fingers[num].phase == FingerPhase.Began)
                        {
                            fingers[num].phase = FingerPhase.Moved;
                        }
                    }
                    float num2 = fingers[num].currentPositionTime - fingers[num].previousPositionTime;
                    if (num2 > 0f)
                    {
                        vector.x = (fingers[num].currentPosition.x - fingers[num].previousPosition.x) / num2;
                        vector.y = (fingers[num].currentPosition.y - fingers[num].previousPosition.y) / num2;
                        fingers[num].velocityIndex = (fingers[num].velocityIndex + 1) % 5;
                        fingers[num].velocities[fingers[num].velocityIndex] = vector;
                        if (fingers[num].velocityCount < 5)
                        {
                            fingers[num].velocityCount++;
                        }
                    }
                }
            }
            if (!_hasTouch)
            {
                return;
            }
            for (int j = 0; j < fingerCount; j++)
            {
                if (fingers[j].id != int.MaxValue && currentFrameIndex - fingers[j].lastSeenFrameIndex > 0)
                {
                    fingers[j].phase = FingerPhase.Ended;
                }
            }
        }

        private void ProcessMouse()
        {
            _activeMouse = false;
            if (_activeTouches || newTouchDetected)
            {
                return;
            }
            int num = -1;
            if (Input.GetMouseButtonDown(0))
            {
                SingletonMonobehaviour<FPSLimiter>.Instance.PushUnlimitedFPSRequest(this);
                if (fingerCount < fingers.Length && island.islandCamera.pixelRect.Contains(UnityEngine.Input.mousePosition))
                {
                    _mouseSkewGauge++;
                    num = fingerCount;
                    fingers[num].id = int.MaxValue;
                    fingers[num].phase = FingerPhase.Began;
                    fingers[num].startPosition = UnityEngine.Input.mousePosition;
                    fingers[num].startPositionTime = Time.realtimeSinceStartup;
                    fingers[num].previousPosition = UnityEngine.Input.mousePosition;
                    fingers[num].previousPositionTime = Time.realtimeSinceStartup;
                    fingers[num].hasMoved = false;
                    fingers[num].velocityIndex = -1;
                    fingers[num].velocityCount = 0;
                    fingerCount++;
                    _activeMouse = true;
                }
            }
            if (Input.GetMouseButtonUp(0))
            {
                SingletonMonobehaviour<FPSLimiter>.Instance.PopUnlimitedFPSRequest(this);
                num = IndexOfFingerID(int.MaxValue);
                if (num >= 0)
                {
                    _mouseSkewGauge--;
                    fingers[num].phase = FingerPhase.Ended;
                }
                _activeMouse = false;
            }
            else if (Input.GetMouseButton(0))
            {
                num = IndexOfFingerID(int.MaxValue);
                _activeMouse = true;
            }
            else if (_mouseSkewGauge != 0)
            {
                _mouseSkewGauge = 0;
                num = IndexOfFingerID(int.MaxValue);
                if (num < 0)
                {
                    UnityEngine.Debug.LogError("fingerIndex of MouseFingerID < 0");
                }
                else
                {
                    fingers[num].phase = FingerPhase.Ended;
                }
            }
            Vector2 mouseScrollDelta = Input.mouseScrollDelta;
            float y = mouseScrollDelta.y;
            if (!Mathf.Approximately(0f, y))
            {
                Vector3 size = island.islandWorldBounds.size;
                float num2 = size.y * 0.5f;
                float num3 = island.islandCamera.orthographicSize / num2;
                float num4 = y * 1.5f * Time.unscaledDeltaTime;
                num3 -= num4;
                island.islandCamera.orthographicSize = num3 * num2;
                RestrictCameraToBounds();
            }
            if (num < 0)
            {
                return;
            }
            fingers[num].currentPosition = UnityEngine.Input.mousePosition;
            fingers[num].currentPositionTime = Time.realtimeSinceStartup;
            fingers[num].distance = (fingers[num].currentPosition - fingers[num].startPosition).magnitude;
            if (!fingers[num].hasMoved && fingers[num].distance >= 0.120000005f * island.dpi)
            {
                fingers[num].hasMoved = true;
                if (fingers[num].phase == FingerPhase.Began)
                {
                    fingers[num].phase = FingerPhase.Moved;
                }
            }
        }

        private void ProcessFingers()
        {
            Camera islandCamera = island.islandCamera;
            bool flag = false;
            for (int i = 0; i < fingerCount; i++)
            {
                if (fingers[i].phase == FingerPhase.Moved)
                {
                    switch (state)
                    {
                        case State.Idle:
                            CancelCameraAnimation();
                            state = State.Panning;
                            SingletonMonobehaviour<FPSLimiter>.Instance.PushUnlimitedFPSRequest(this);
                            panningFingerID = fingers[i].id;
                            if (island.grid != null && island.builder != null && island.builder.isBuilding)
                            {
                                GameObject closestGameObjectAt = GetClosestGameObjectAt(islandCamera.ScreenToWorldPoint(fingers[i].startPosition));
                                GridTile component;
                                if (closestGameObjectAt != null && (component = closestGameObjectAt.GetComponent<GridTile>()) != null && component == island.builder.currentTile)
                                {
                                    state = State.BuildingPanning;
                                    buildingPanningOffset = (Vector2)islandCamera.ScreenToWorldPoint(fingers[i].startPosition) - ((Vector2)component.grid.transform.position + component.element.Origin + new Vector2(0f, island.grid.elementSize.y * 0.5f));
                                }
                            }
                            break;
                        case State.Panning:
                            if (fingers[i].id != panningFingerID)
                            {
                                state = State.Pinching;
                                SingletonMonobehaviour<FPSLimiter>.Instance.PushUnlimitedFPSRequest(this);
                                pinchingFingerID = fingers[i].id;
                            }
                            break;
                    }
                }
                else
                {
                    if (fingers[i].phase != FingerPhase.Ended)
                    {
                        continue;
                    }
                    switch (state)
                    {
                        case State.Panning:
                        case State.BuildingPanning:
                            {
                                if (fingers[i].id != panningFingerID)
                                {
                                    break;
                                }
                                state = State.Idle;
                                panningFingerID = -1;
                                if (fingers[i].velocityCount <= 0)
                                {
                                    break;
                                }
                                Vector2 a = Vector2.zero;
                                int num = 0;
                                int velocityCount = fingers[i].velocityCount;
                                for (int j = num; j < velocityCount; j++)
                                {
                                    int num2 = fingers[i].velocityIndex - j;
                                    if (num2 < 0)
                                    {
                                        num2 += 5;
                                    }
                                    a += fingers[i].velocities[num2];
                                }
                                a /= velocityCount - num;
                                if (a.magnitude / island.dpi > 0.2f)
                                {
                                    cameraAnimation = CameraAnimation.Deceleration;
                                    cameraAnimationStart = Time.realtimeSinceStartup;
                                    cameraAnimationVelocity = -a;
                                }
                                else
                                {
                                    SingletonMonobehaviour<FPSLimiter>.Instance.PopUnlimitedFPSRequest(this);
                                }
                                break;
                            }
                        case State.Pinching:
                            if (fingers[i].id == panningFingerID)
                            {
                                state = State.Panning;
                                panningFingerID = pinchingFingerID;
                                pinchingFingerID = -1;
                            }
                            else if (fingers[i].id == pinchingFingerID)
                            {
                                state = State.Panning;
                                pinchingFingerID = -1;
                            }
                            break;
                    }
                    if (!fingers[i].hasMoved && !HandleTapAt(fingers[i].currentPosition))
                    {
                        flag = true;
                    }
                }
            }
            if (state == State.Panning || state == State.Pinching)
            {
                int num3 = IndexOfFingerID(panningFingerID);
                int num4 = (state != State.Pinching) ? (-1) : IndexOfFingerID(pinchingFingerID);
                Vector2 previousPosition = default(Vector2);
                Vector2 currentPosition = default(Vector2);
                if (state == State.Pinching)
                {
                    previousPosition.x = (fingers[num3].previousPosition.x + fingers[num4].previousPosition.x) * 0.5f;
                    previousPosition.y = (fingers[num3].previousPosition.y + fingers[num4].previousPosition.y) * 0.5f;
                    currentPosition.x = (fingers[num3].currentPosition.x + fingers[num4].currentPosition.x) * 0.5f;
                    currentPosition.y = (fingers[num3].currentPosition.y + fingers[num4].currentPosition.y) * 0.5f;
                }
                else
                {
                    previousPosition = fingers[num3].previousPosition;
                    currentPosition = fingers[num3].currentPosition;
                }
                Vector3 vector = default(Vector3);
                vector.x = (0f - (currentPosition.x - previousPosition.x)) / islandCamera.pixelRect.width * (islandCamera.orthographicSize * 2f * islandCamera.aspect);
                vector.y = (0f - (currentPosition.y - previousPosition.y)) / islandCamera.pixelRect.height * (islandCamera.orthographicSize * 2f);
                vector.z = 0f;
                islandCamera.transform.position += vector;
                if (state == State.Pinching)
                {
                    float magnitude = (fingers[num3].previousPosition - fingers[num4].previousPosition).magnitude;
                    float num5 = (fingers[num3].currentPosition - fingers[num4].currentPosition).magnitude;
                    float num6 = islandCamera.orthographicSize * (magnitude / num5) * 2f * island.pixelsPerUnit / islandCamera.pixelRect.height * island.dpi;
                    if (num6 < _minPixelsPerInch)
                    {
                        num5 = islandCamera.orthographicSize * 2f * magnitude * island.pixelsPerUnit * island.dpi / (_minPixelsPerInch * islandCamera.pixelRect.height);
                    }
                    else if (num6 > _maxPixelsPerInch)
                    {
                        num5 = islandCamera.orthographicSize * 2f * magnitude * island.pixelsPerUnit * island.dpi / (_maxPixelsPerInch * islandCamera.pixelRect.height);
                    }
                    islandCamera.orthographicSize *= magnitude / num5;
                    float x = currentPosition.x;
                    Vector2 center = islandCamera.pixelRect.center;
                    vector.x = (x - center.x) / islandCamera.pixelRect.width * (islandCamera.orthographicSize * 2f * islandCamera.aspect) * ((num5 - magnitude) / magnitude);
                    float y = currentPosition.y;
                    Vector2 center2 = islandCamera.pixelRect.center;
                    vector.y = (y - center2.y) / islandCamera.pixelRect.height * (islandCamera.orthographicSize * 2f) * ((num5 - magnitude) / magnitude);
                    vector.z = 0f;
                    islandCamera.transform.position += vector;
                }
                RestrictCameraToBounds();
            }
            else if (state == State.BuildingPanning)
            {
                int num7 = IndexOfFingerID(panningFingerID);
                GridIndex newIndex = island.grid.ConvertIslandCoordinateToGridIndex((Vector2)islandCamera.ScreenToWorldPoint(fingers[num7].currentPosition) - buildingPanningOffset);
                island.builder.UpdateBuild(newIndex);
            }
            else if (flag)
            {
                GameEvents.Invoke(new UnemiShouldCloseEvent(this));
            }
        }

        private void EndFingers()
        {
            int num = 0;
            while (num < fingerCount)
            {
                if (fingers[num].phase == FingerPhase.Ended)
                {
                    for (int i = num; i < fingerCount - 1; i++)
                    {
                        fingers[i] = fingers[i + 1];
                    }
                    fingers[fingerCount - 1].id = -1;
                    fingerCount--;
                }
                else
                {
                    fingers[num].previousPosition = fingers[num].currentPosition;
                    fingers[num].previousPositionTime = fingers[num].currentPositionTime;
                    num++;
                }
            }
        }

        private int IndexOfFingerID(int id)
        {
            for (int i = 0; i < fingers.Length; i++)
            {
                if (fingers[i].id == id)
                {
                    return i;
                }
            }
            return -1;
        }

        private void UpdateMinMaxPerInch()
        {
            Vector3 extents = island.islandBounds.extents;
            float x = extents.x;
            Vector3 extents2 = island.islandBounds.extents;
            float num = x / extents2.y;
            float num2 = island.islandCamera.pixelRect.width / island.islandCamera.pixelRect.height;
            float num3;
            if (num > num2)
            {
                Vector3 extents3 = island.islandBounds.extents;
                num3 = extents3.y;
            }
            else
            {
                Vector3 extents4 = island.islandBounds.extents;
                num3 = extents4.x / num2;
            }
            float num4 = num3 * _maxOrthographicSizeFactor;
            _maxPixelsPerInch = num4 * 2f * island.pixelsPerUnit / island.islandCamera.pixelRect.height * island.dpi;
            _minPixelsPerInch = _maxPixelsPerInch * 0.5f;
        }
    }
}