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128 lines
4.6 KiB
128 lines
4.6 KiB
namespace VRTK.Examples
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{
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using UnityEngine;
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using UnityEngine.UI;
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public class PanelMenuSaucerGrid : MonoBehaviour
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{
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public GridLayoutGroup gridLayoutGroup;
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public MeshRenderer changeObject;
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public VRTK_PanelMenuItemController panelMenuController;
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public Color[] colours = new Color[0];
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protected int currentIndex = 0;
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protected readonly Color colorDefault = Color.white;
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protected readonly Color colorSelected = Color.green;
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protected readonly float colorAlpha = 0.25f;
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protected enum Direction
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{
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None,
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Up,
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Down,
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Left,
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Right
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}
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protected virtual void OnEnable()
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{
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if (panelMenuController != null)
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{
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panelMenuController.PanelMenuItemSwipeTop += PanelMenuItemSwipeTop;
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panelMenuController.PanelMenuItemSwipeBottom += PanelMenuItemSwipeBottom;
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panelMenuController.PanelMenuItemSwipeLeft += PanelMenuItemSwipeLeft;
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panelMenuController.PanelMenuItemSwipeRight += PanelMenuItemSwipeRight;
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panelMenuController.PanelMenuItemTriggerPressed += PanelMenuItemTriggerPressed;
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}
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SetGridLayoutItemSelectedState(currentIndex);
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}
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protected virtual void PanelMenuItemTriggerPressed(object sender, PanelMenuItemControllerEventArgs e)
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{
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if (currentIndex < colours.Length && changeObject != null)
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{
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changeObject.material.color = colours[currentIndex];
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}
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}
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protected virtual void PanelMenuItemSwipeRight(object sender, PanelMenuItemControllerEventArgs e)
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{
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MoveSelectGridLayoutItem(Direction.Right);
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}
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protected virtual void PanelMenuItemSwipeLeft(object sender, PanelMenuItemControllerEventArgs e)
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{
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MoveSelectGridLayoutItem(Direction.Left);
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}
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protected virtual void PanelMenuItemSwipeBottom(object sender, PanelMenuItemControllerEventArgs e)
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{
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MoveSelectGridLayoutItem(Direction.Down);
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}
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protected virtual void PanelMenuItemSwipeTop(object sender, PanelMenuItemControllerEventArgs e)
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{
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MoveSelectGridLayoutItem(Direction.Up);
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}
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protected virtual void SetGridLayoutItemSelectedState(int index)
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{
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foreach (Transform childTransform in gridLayoutGroup.transform)
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{
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GameObject child = childTransform.gameObject;
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if (child != null)
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{
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Color color = colorDefault;
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color.a = colorAlpha;
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child.GetComponent<Image>().color = color;
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}
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}
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Transform selected = gridLayoutGroup.transform.GetChild(index);
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if (selected != null)
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{
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Color color = colorSelected;
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color.a = colorAlpha;
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selected.GetComponent<Image>().color = color;
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}
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}
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protected virtual bool MoveSelectGridLayoutItem(Direction direction)
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{
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int newIndex = FindNextItemBasedOnMoveDirection(direction);
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if (newIndex != currentIndex)
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{
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SetGridLayoutItemSelectedState(newIndex);
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currentIndex = newIndex;
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}
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return true;
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}
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protected virtual int FindNextItemBasedOnMoveDirection(Direction direction)
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{
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float width = gridLayoutGroup.preferredWidth;
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float cellWidth = gridLayoutGroup.cellSize.x;
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float spacing = gridLayoutGroup.spacing.x;
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int cellsAccross = (int)Mathf.Floor(width / (cellWidth + (spacing / 2))); // quick / dirty
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int childCount = gridLayoutGroup.transform.childCount;
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switch (direction)
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{
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case Direction.Up:
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int nextUp = currentIndex - cellsAccross;
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return (nextUp >= 0) ? nextUp : currentIndex;
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case Direction.Down:
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int nextDown = currentIndex + cellsAccross;
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return (nextDown < childCount) ? nextDown : currentIndex;
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case Direction.Left:
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int nextLeft = currentIndex - 1;
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return (nextLeft >= 0) ? nextLeft : currentIndex;
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case Direction.Right:
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int nextRight = currentIndex + 1;
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return (nextRight < childCount) ? nextRight : currentIndex;
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default:
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return currentIndex;
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}
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}
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}
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}
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