@Override
public int getVisibilityData(
final int x, final int y, final CellVisibilityData[] cellVisibilityData, final int index) {
assert this.checkGetVisibilityData(x, y, cellVisibilityData);
int numZ = 1;
final CellVisibilityData data = cellVisibilityData[index];
data.m_x = x;
data.m_y = y;
data.m_z = this.getZ(x, y);
data.m_height = (byte) Math.max(0, data.m_z);
data.m_hollow = false;
if (this.m_attachedBuilding.length != 0) {
for (final AbstractBuildingStruct building : this.m_attachedBuilding) {
final int result = building.getVisibilityData(x, y, cellVisibilityData, index + numZ);
if (result != -1) {
numZ += mergeSameAltitude(cellVisibilityData, index, index + numZ, result);
}
}
}
return numZ;
}