private void OnMouseOver()
{
//if left or right click
if (Input.GetMouseButtonDown(0) || Input.GetMouseButtonDown(1))
{
RemovePathIndexes();
highlightColour = Input.GetMouseButtonDown(1) ? Color.red : Color.yellow; //red for delete, yellow for create
state |= eSquareState.highlighted;
startSquare = gridCoord;
endSquare = startSquare;
drawHorizontal = true;
drawPathIndexes.Add(GridUtilities.TwoToOne(startSquare));
}
else if (Input.GetMouseButton(0) || Input.GetMouseButton(1)) //left or right click down
{
//skip if same tile as last time
if (gridCoord == endSquare)
{
return;
}
bool prevDrawHor = drawHorizontal;
drawHorizontal = IsHorizontal(startSquare, gridCoord, drawHorizontal);
//If we've changed direction our whole list is wrong
if (prevDrawHor != drawHorizontal)
{
RemovePathIndexes();
int startIndex = GridUtilities.TwoToOne(startSquare);
int diff = drawHorizontal ? startSquare.x - gridCoord.x : startSquare.y - gridCoord.y;
int direction = diff < 0 ? 1 : -1;
int boxCount = Mathf.Abs(diff) + 1; //plus one to include starting box
int modifier = drawHorizontal ? 1 : Grid.width;
for (int i = 0; i < boxCount; ++i)
{
int index = startIndex + (modifier * i * direction);
drawPathIndexes.Add(index);
Grid.squares[index].state |= eSquareState.highlighted;
}
}
else
{
int diff = drawHorizontal ? startSquare.x - endSquare.x : startSquare.y - endSquare.y;
int direction = diff < 0 ? 1 : -1;
int newDiff = drawHorizontal ? endSquare.x - gridCoord.x : endSquare.y - gridCoord.y;
int newDir = newDiff < 0 ? 1 : -1;
int boxCount = Mathf.Abs(newDiff);
int modifier = drawHorizontal ? 1 : Grid.width;
for (int i = 0; i < boxCount; ++i)
{
if (newDir != direction && diff != 0)
{
if (drawPathIndexes.Count == 1)
{
direction *= -1;
continue;
}
int index = drawPathIndexes[drawPathIndexes.Count - 1];
Grid.squares[index].state &= ~eSquareState.highlighted;
drawPathIndexes.Remove(index);
}
else
{
int index = drawPathIndexes[drawPathIndexes.Count - 1] + (modifier * newDir);
Grid.squares[index].state |= eSquareState.highlighted;
drawPathIndexes.Add(index);
}
}
}
endSquare = gridCoord;
}
}
void OnMouseExit()
{
//while mouse is over tile it is selected
state &= ~eSquareState.selected;
}
void OnMouseEnter()
{
//tile is selected while mouse is over it.
state |= eSquareState.selected;
}
