Layers and Maps - Android Games Practical Programming by Example - page 70

this . notInMarix = getNotInMatrix(mapMatrix);;

}

//Returns a 2D array of int[][] that represents an impassable path matrix
public int [][] getNotInMatrix( int [][] mapMatrix){
int [][] result = new int [ MAP_ROWS ][ MAP_COLS ];

for ( int i=0;i<result. length ;i++){
for ( int j=0;j<result[i]. length ;j++){
result[i][j] = getBlock (mapMatrix[i][j]);

}

}
return result;

}

//Returns a drawable map matrix based on the map data
//specified in mapMatrix
public static MyDrawable [][] getMyDrawableMatrix( int [][] mapMatrix){
MyDrawable [][] result = new MyDraw-

able[ MAP_ROWS ][ MAP_COLS ];
for ( int i=0;i< MAP_ROWS ;i++){
for ( int j=0;j< MAP_COLS ;j++){
if (mapMatrix[i][j]>0){
result[i][j]
= new MyDrawable(mapMatrix[i][j], TILE_SIZE );
}

}

}
return result;

}

}
All layers of map are encapsulated in the LayerList class, which provides a method to re-
trieve the impassable path matrix for all layers of the specified stage.