swing - Java Tetris - weird row clearing issue -

i’m encountering couple weird things clearing rows in tetris...

if set board’s width , height same (10 , 10):

board = new board(10, 10, 35); 

which determined by:

public board(int w, int h, int ts) {     width = w;     height = h;     tilesize = ts;     grid = new tile[width][height]; ... }  public int getwidth() {        return width * tilesize;  }  public int getheight() {        return height * tilesize; } 

row clearing seems work fine (although, i’m not sure why there hidden row beneath it… shouldn’t fit jframe?):

but if set width , height differently (here it’s 10 , 12), rows won’t clear.

board = new board(10, 12, 35); 

row clearing:

public void checkbottomfull() {     system.out.println(grid.length);     int lines = 0;     for(int row = grid.length-1; row >= 0; row--) {         while (isfull(row)) {                    lines++;             clearrow(row);            }     } }  public boolean isfull(int row) {     (int col = 0; col <= grid[row].length-1; col++) {         while(grid[col][row] == null) {              return false;         }     }     return true; }  public void clearrow(int rowtoclear) {      for(int row = rowtoclear; row > 0; row--) {          for(int col = 0; col < grid[row].length; col++) {             grid[col][row] = grid[col][row-1];          }      } } 

any thoughts why having equal dimensions allows rows clear? why should matter?

thanks!

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i think found issue, when tried resolve it, throws error.

before, had checkbottomfull() looping through grid.length-1, equal 10 ( for(int row = grid.length-1; row >= 0; row--) {) put height (rows) 12 gameboard = new board(10, 12, 35);, should looping through 12 rows, not 10. , should looping through 10 columns per row...

so hardcoded rows @ 12 , columns @ 10 below...

//loop through rows (12 rows) public void checkbottomfull() {     system.out.println(grid.length);     for(int row = 12; row > 0; row--) {         while (isfull(row)) {                    clearrow(row);            }     } } //loop through columns in row (10 columns) public boolean isfull(int row) {     system.out.println(grid[row].length);     (int col = 0; col <= 10; col++) {         if(grid[col][row] == null) {              return false;         }     }     return true; } 

but it's throwing indexoutofbounds exception...

no idea why

one thing notice this:

for (int col = 0; col <= grid[row].length-1; col++) {     while(grid[col][row] == null) { 

you've got grid[row] grid[col][row]. leads me think should either grid[col] or grid[row][col]`