// Extend the Basic grid to allow for handling full rows.

public class TetrisGrid extends BasicTetrisGrid

{

public TetrisGrid()

{

super();

}

public int checkForFullRows()

{

int fullRowCounter, numberOfFullRows = 0;

for(int y = 19; y >= 0; y--) // Start from last row

{

fullRowCounter=0;

for(int x = 0; x < 10; x++)

if(TetrisGrid[x][y] != GraphicsController.BLACK)

{

fullRowCounter++; // Count number of non-black squares in a row

}

if(fullRowCounter == 10) // Row is full

{

numberOfFullRows++;

for(int j = y; j > 0; j--)

for(int x = 0; x < 10; x++)

TetrisGrid[x][j] = TetrisGrid[x][j-1]; // Move upper rows down

for(int x = 0; x < 10; x++)

TetrisGrid[x][0] = GraphicsController.BLACK; // Set upper row to black (no row above it to move down)

}

}

return numberOfFullRows;

}

public void setColour(int x, int y, int colour)

{

TetrisGrid[x][y] = colour;

}

public int getColour(int x, int y)

{

return TetrisGrid[x][y];

}

public boolean isFull()

{

for(int x = 0; x < 10; x++)

if(TetrisGrid[x][0] != GraphicsController.BLACK)

return true;

return false;

}

public boolean canSpawnNewShape(TetrisDrawableObject shape) // Checks whether a new shape can be spawned. Used so that the last shape that spawns doesn't overlap an existing shape in the upper rows of the grid.

{

TetrisFileLoadingDrawableObject currentShape = shape.getCurrentShape();

for(int x = 0; x < currentShape.getWidth(); x++)

for(int y = 0; y < currentShape.getHeight(); y++)

if(currentShape.getColour(x, y) != GraphicsController.BLACK) // If the non-black squares of the shape to be spawned overlap another shape in the grid, return false

if(TetrisGrid[x + currentShape.getCoordX()][y + currentShape.getCoordY()] != GraphicsController.BLACK)

return false;

return true;

}

}