boolean driveDone() {
int low, high;
switch (sourceZone) {
case RESIDENTIAL:
low = COMBASE;
high = NUCLEAR;
break;
case COMMERCIAL:
low = LHTHR;
high = PORT;
break;
case INDUSTRIAL:
low = LHTHR;
high = COMBASE;
break;
default:
throw new Error("unreachable");
}
if (mapY > 0) {
int tile = city.getTile(mapX, mapY - 1);
if (tile >= low && tile <= high) return true;
}
if (mapX + 1 < city.getWidth()) {
int tile = city.getTile(mapX + 1, mapY);
if (tile >= low && tile <= high) return true;
}
if (mapY + 1 < city.getHeight()) {
int tile = city.getTile(mapX, mapY + 1);
if (tile >= low && tile <= high) return true;
}
if (mapX > 0) {
int tile = city.getTile(mapX - 1, mapY);
if (tile >= low && tile <= high) return true;
}
return false;
}
