public bool PieceFits(GameObject piece, int[,] pieceValues)
{
PieceController p = piece.GetComponent <PieceController>();
//figure out where it's going to snap to on the grid
//find top left corner of piece sprite as vector3
Vector3 topLeftCorner = p.GetTopLeftCorner();
topLeftCorner = new Vector3(topLeftCorner.x, topLeftCorner.y + gridLength, topLeftCorner.z);
//SpriteRenderer sprite = piece.GetComponent<SpriteRenderer>();
//find x and y distance of that corner from top left corner of grid
//SpriteRenderer gridSprite = transform.gameObject.GetComponent<SpriteRenderer>();
float xdist = topLeftCorner.x - gridCorner.x;
float ydist = topLeftCorner.y - (gridCorner.y + gridLength + 2 * squareWidth); //THIS IS BAD
//produce vector3 corresponding to position relative to top left of grid
Vector3 relativePos = new Vector3(xdist, ydist, topLeftCorner.z);
//add half grid square length to x and y of vector for rounding purposes
relativePos = new Vector3(relativePos.x + squareWidth / 2, relativePos.y + squareWidth / 2, relativePos.z);
//while said vector x isn't negative:
//subtract grid square width and increment an int counter (starting at -1)
xcounter = -1;
while (relativePos.x >= 0)
{
relativePos = new Vector3(relativePos.x - squareWidth, relativePos.y, relativePos.z);
xcounter++;
}
ycounter = -1;
while (relativePos.y >= 0) //ditto y
{
relativePos = new Vector3(relativePos.x, relativePos.y - squareWidth, relativePos.z);
ycounter++;
}
//if either dimension is negative, return false
ycounter = GRID_SIZE - 2 - ycounter;
//Debug.Log (ycounter);
if (ycounter < 0 || xcounter < 0)
{
return(false);
}
//counters are now the grid coordinates, probably
//make sure its width/height actually fit
if (xcounter + pieceValues.GetLength(1) > GRID_SIZE)
{
return(false);
}
if (ycounter + pieceValues.GetLength(0) > GRID_SIZE)
{
return(false);
}
//Debug.Log("ycounter is " + ycounter + " and xcounter is " + xcounter);
//at this point we know it at least fits within the bounds of the grid
//compare each grid square
for (int i = 0; i < pieceValues.GetLength(0); i++)
{
for (int j = 0; j < pieceValues.GetLength(1); j++)
{
//Debug.Log("i is " + i + " and j is " + j);
Occupancy o = grid[ycounter + i, xcounter + j];
int shapecode = pieceValues[i, j];
//do some simple checks
if (shapecode == 0 || o.IsEmpty())
{
continue;
}
if (shapecode == 1 && !o.IsEmpty())
{
return(false);
}
if (shapecode != 0 && o.IsFull())
{
return(false);
}
//do more complicated stuff
if (shapecode == NORTHWEST_CODE && !(o.north == null && o.west == null))
{
return(false);
}
if (shapecode == NORTHEAST_CODE && !(o.north == null && o.east == null))
{
return(false);
}
if (shapecode == SOUTHEAST_CODE && !(o.south == null && o.east == null))
{
return(false);
}
if (shapecode == SOUTHWEST_CODE && !(o.south == null && o.west == null))
{
return(false);
}
}
}
//we've gone through and there've been no collisions
return(true);
}