public static void InitViewportControl(DragReceiver drag_)
{
_drag = drag_;
_drag.WhenDragBegin = d => {
_focusOverride = _dragFocusOverride;
_dragInertiaValue = 0;
CameraSystem.WorldPosition = MainCamera.transform.position;
};
_drag.WhenDrag = (d, offset, pos) => {
var targetX = CameraSystem.X + offset.x * UnitPerPixel;
var targetY = CameraSystem.Y + offset.y * UnitPerPixel;
if (PositionLimit != null)
{
(targetX, targetY) = PositionLimit.Limit(targetX, targetY);
}
MainCamera.transform.position = CameraSystem.SystemToWorld(
targetX,
targetY,
CameraSystem.Z);
OnDrag.Invoke(offset, new Vector3(targetX, targetY, CameraSystem.Z));
};
_drag.WhenDragEnd = (d, delta) => {
_focusOverride = false;
_dragInertiaValue = delta.magnitude;
_dragInertiaDelta = delta / _dragInertiaValue;
CameraSystem.WorldPosition = MainCamera.transform.position;
};
_drag.WhenPinch = (d, start, distance) => {
var diff = (distance - start) * zoomSetting.dragFactor * zoomSetting.range * _screenHeightInverse;
TargetZoom(_zoomTarget - diff);
};
ViewportControl(true);
}
public void Init(Vector2 extent, Vector2 center)
{
ViewEnv.ViewportLimit = this;
limit = new PositionLimit();
borderCenter = center;
borderExtent = extent;
ViewEnv.PositionLimit = limit;
OnZoom(ViewEnv.Zoom);
}
public static void TryLimitPosition()
{
if (PositionLimit is null)
{
return;
}
(CameraSystem.X, CameraSystem.Y) = PositionLimit.Limit(CameraSystem.X, CameraSystem.Y);
MainCamera.transform.position = CameraSystem.WorldPosition;
}
private void Update(float deltaTime)
{
CheckScreenSize();
if (_fadeMessage != null)
{
foreach (var m in _fadeMessage)
{
m.Fade(deltaTime);
}
}
if (Focus != null && !_focusOverride)
{
var focus = CameraSystem.WorldToSystemXY(Focus.position) + FocusOffset;
var dir = focus - CameraSystem.PositionXY;
var dist = dir.magnitude;
var move = _focusStep * deltaTime;
if (move >= dist)
{
CameraSystem.PositionXY = focus;
if (_focusOnce)
{
Focus = null;
}
}
else
{
CameraSystem.PositionXY += dir / dist * Mathf.Lerp(0.5f, 2f, dist) * _focusStep * deltaTime;
}
MainCamera.transform.position = CameraSystem.WorldPosition;
}
if (_dragInertia && _dragInertiaValue > _dragInertiaThreshold)
{
_dragInertiaValue *= _dragInertiaDamping;
var inertia = _dragInertiaValue * _dragInertiaDelta * UnitPerPixel;
var targetX = CameraSystem.X - inertia.x;
var targetY = CameraSystem.Y - inertia.y;
if (PositionLimit != null)
{
(targetX, targetY) = PositionLimit.Limit(targetX, targetY);
}
MoveToSystemPos(new Vector2(targetX, targetY));
}
if (PositionLimit != null && PositionLimit.Unstable && !Input.anyKey)
{
(CameraSystem.X, CameraSystem.Y) = PositionLimit.ElasticPull();
MainCamera.transform.position = CameraSystem.WorldPosition;
}
if (_zoomTarget != Zoom)
{
if (_zoomTransitTime > 0)
{
_zoomTransitTime -= deltaTime;
ZoomValue(Mathf.SmoothStep(_zoomTarget, _zoomStart, _zoomTransitTime / _zoomTransitDuration));
}
else
{
ZoomValue(_zoomTarget);
}
}
Vector2 mp = Input.mousePosition;
if (mp.x < 0 || mp.y < 0 || mp.x > Screen.width || mp.y > Screen.height)
{
return;
}
if (Input.GetMouseButtonDown(0))
{
ClickVisual?.EmitAt(UICamera.ScreenToWorldPoint(mp), UIViewScale);
}
if (_drag != null && _drag.interactable && Input.mouseScrollDelta.y != 0)
{
_zoomTransitTime = 0;
TargetZoom(_zoomTarget - Input.mouseScrollDelta.y * zoomSetting.scrollStep);
}
}