void OnSceneGUI(SceneView sceneView)
{
int numberX, numberY;
float lineSizeX, lineSizeY;
Vector3 initialPos, refSize, selObjPos, selObjSize;
EditorObject selectedObject;
mousePosition = Event.current.mousePosition;
if (sceneView != null)
{
mousePosition.y = sceneView.camera.pixelHeight - mousePosition.y;
mousePosition = sceneView.camera.ScreenToWorldPoint(mousePosition);
mousePosition.y = -mousePosition.y;
//cameraSize = sceneView.camera.ScreenToWorldPoint(new Vector3(sceneView.camera.pixelRect.width, sceneView.camera.pixelRect.height));
mouseConvPos = Helper.ConvertVectorToGrid(mousePosition, gridX, gridY);
mouseConvPos = new Vector3(mouseConvPos.x * gridX, -(mouseConvPos.y + 1) * gridY);
mouseGridPos = Helper.ConvertVectorToGrid(mousePosition, gridX, gridY);
//TODO: we have to adapt this to the size of the camera
lineSizeX = 40;
lineSizeY = 30;
numberX = Mathf.RoundToInt(lineSizeX / gridX) % 2 == 0 ? Mathf.RoundToInt(lineSizeX / gridX) : Mathf.RoundToInt(lineSizeX / gridX) + 1;
numberY = Mathf.RoundToInt(lineSizeY / gridY) % 2 == 0 ? Mathf.RoundToInt(lineSizeY / gridY) : Mathf.RoundToInt(lineSizeY / gridY) + 1;
initialPos = -new Vector2(gridX * numberX, gridY * numberY) / 2 + new Vector2(Helper.ConvertVectorToGrid(sceneView.pivot, gridX, gridY).x *gridX, Helper.ConvertVectorToGrid(sceneView.pivot, gridX, gridY).y *gridY);
//Grid
if (showGrid)
{
//Vertical Lines
for (int i = 0; i <= numberX; i++)
{
Handles.color = gridColor;
Handles.DrawLine(initialPos + new Vector3(i * gridX, 0), initialPos + new Vector3(i * gridX, gridX * numberY));
}
//Horizontal lines
for (int j = 0; j <= numberY; j++)
{
Handles.color = gridColor;
Handles.DrawLine(initialPos + new Vector3(0, j * gridY), initialPos + new Vector3(gridY * numberX, j * gridY));
}
}
//Draw Cursor
Handles.color = cursorColor;
Handles.DrawLine(mouseConvPos, mouseConvPos + new Vector3(gridX, 0)); //Top
Handles.DrawLine(mouseConvPos + new Vector3(gridX, 0), mouseConvPos + new Vector3(gridX, gridY)); //Right
Handles.DrawLine(mouseConvPos + new Vector3(gridX, gridY), mouseConvPos + new Vector3(0, gridY)); //Down
Handles.DrawLine(mouseConvPos + new Vector3(0, gridY), mouseConvPos); //Left
//Draw selected objects
if (selectedObjects != null)
{
foreach (EditorObject obj in selectedObjects)
{
selObjPos = obj.reference.transform.position;
selObjSize = obj.reference.GetComponent <SpriteRenderer>().bounds.size;
Handles.color = selectColor;
Handles.DrawLine(selObjPos + new Vector3(-selObjSize.x, selObjSize.y) / 2, selObjPos + new Vector3(-selObjSize.x, selObjSize.y) / 2 + new Vector3(selObjSize.x, 0)); //Top
Handles.DrawLine(selObjPos + new Vector3(-selObjSize.x, selObjSize.y) / 2 + new Vector3(selObjSize.x, 0), selObjPos + new Vector3(-selObjSize.x, selObjSize.y) / 2 + new Vector3(selObjSize.x, -selObjSize.y)); //Right
Handles.DrawLine(selObjPos + new Vector3(-selObjSize.x, selObjSize.y) / 2 + new Vector3(selObjSize.x, -selObjSize.y), selObjPos + new Vector3(-selObjSize.x, -selObjSize.y) / 2); //Down
Handles.DrawLine(selObjPos + new Vector3(-selObjSize.x, -selObjSize.y) / 2, selObjPos + new Vector3(-selObjSize.x, selObjSize.y) / 2); //Left
}
}
Event e = Event.current;
int controlID = GUIUtility.GetControlID(FocusType.Passive);
switch (e.GetTypeForControl(controlID))
{
case EventType.MouseDown:
if (e.button == 0)
{
GUIUtility.hotControl = controlID;
if (cursorState == CursorState.Add)
{
AddObject();
}
if (cursorState == CursorState.Remove)
{
RemoveObject();
}
if (cursorState == CursorState.Drag)
{
DragObject();
}
//Selected Object (priority to the selected layer)
selectedObject = FindMouseOverObject(selectedLayer);
if (selectedObject == null)
{
foreach (Layer l in layers)
{
selectedObject = FindMouseOverObject(l);
if (selectedObject != null)
{
break;
}
}
}
//If it's only one element;
if (!e.shift)
{
selectedObjects.Clear();
}
if (selectedObject != null)
{
//Boundings
if (!e.shift)
{
selectedObject.HighlightTileBoundings();
}
if (selectedObjects.Contains(selectedObject))
{
selectedObjects.Remove(selectedObject);
}
else
{
selectedObjects.Add(selectedObject);
}
}
e.Use();
}
break;
case EventType.MouseUp:
if (e.button == 0)
{
GUIUtility.hotControl = 0;
if (cursorState == CursorState.Drag && dragObject != null)
{
dragObject = null;
}
e.Use();
}
break;
case EventType.MouseDrag:
if (e.button == 0)
{
GUIUtility.hotControl = controlID;
if (cursorState == CursorState.Add)
{
AddObject();
}
if (cursorState == CursorState.Remove)
{
RemoveObject();
}
if (cursorState == CursorState.Drag && dragObject != null)
{
dragObject.reference.transform.position = GetObjSnappedPosition(dragObject.reference);
dragObject.i = (int)mouseGridPos.x;
dragObject.j = (int)mouseGridPos.y;
}
e.Use();
}
break;
case EventType.KeyDown:
//Shortcut for removing
if (e.keyCode == KeyCode.R)
{
cursorState = CursorState.Remove;
UnityEditorInternal.InternalEditorUtility.RepaintAllViews();
}
//Shortcut for selecting
if (e.keyCode == KeyCode.S)
{
cursorState = CursorState.Drag;
UnityEditorInternal.InternalEditorUtility.RepaintAllViews();
}
break;
}
Handles.EndGUI();
}
}
/// <summary>
/// Add a new element
/// </summary>
/// <param name="e">A game object (prefab)</param>
public void AddSceneElement(EditorObject e)
{
sceneElements.Add(e);
e.reference.transform.parent = container.gameObject.transform;
}