Layers and Maps - Android Games Practical Programming by Example - page 71

//Stores all layers of map
public class LayerList{
public ArrayList<Layer> layerList = new ArrayList<Layer>();
//Static method, returns a LayerList containing a list of all layers
public static LayerList getLayerListByStage( int stage){
Layer layer;
LayerList list= new LayerList();
//Reads map details from GameData and adds them to LayerList
for ( int i=0;i<GameData. mapData [stage]. length ;i++){
layer = new Layer(GameData. mapData [stage][i]);
list. layerList .add(layer);
}
return list;
}
//Returns the impassable path matrix for all layers
public int [][] getTotalNotInMatrix(){
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++){
for (Layer layer: layerList ){
result[i][j] =
result[i][j]|layer. notInMarix [i][j];
}
}
}
return result;
}
}