private void RemoveSpace(uint offset, uint amount)
{
// move the data
byte[] block = _owner.m_Overlay.ReadBlock(offset + amount, (uint)(_owner.m_Overlay.GetSize() - offset - amount));
_owner.m_Overlay.WriteBlock(offset, block);
_owner.m_Overlay.SetSize(_owner.m_Overlay.GetSize() - amount);
// update the pointers
for (int i = 0; i < _owner.m_PointerList.Count; i++)
{
LevelEditorForm.PointerReference ptrref = _owner.m_PointerList[i];
if (ptrref.m_ReferenceAddr >= (offset + amount))
{
ptrref.m_ReferenceAddr -= amount;
}
if (ptrref.m_PointerAddr >= (offset + amount))
{
ptrref.m_PointerAddr -= amount;
_owner.m_Overlay.WritePointer(ptrref.m_ReferenceAddr, ptrref.m_PointerAddr);
}
_owner.m_PointerList[i] = ptrref;
}
// update the objects 'n' all
UpdateObjectOffsets(offset + amount, (uint)-amount);
}
private void AddSpace(uint offset, uint amount)
{
if ((_owner.m_Overlay.GetSize() + amount) > NitroROM.LEVEL_OVERLAY_SIZE)
{
throw new Exception("This level has reached the level size limit. Cannot add more data.");
}
// move the data
byte[] block = _owner.m_Overlay.ReadBlock(offset, (uint)(_owner.m_Overlay.GetSize() - offset));
_owner.m_Overlay.WriteBlock(offset + amount, block);
// write zeroes in the newly created space
for (int i = 0; i < amount; i++)
{
_owner.m_Overlay.Write8((uint)(offset + i), 0);
}
// update the pointers
for (int i = 0; i < _owner.m_PointerList.Count; i++)
{
LevelEditorForm.PointerReference ptrref = _owner.m_PointerList[i];
if (ptrref.m_ReferenceAddr >= offset)
{
ptrref.m_ReferenceAddr += amount;
}
if (ptrref.m_PointerAddr >= offset)
{
ptrref.m_PointerAddr += amount;
_owner.m_Overlay.WritePointer(ptrref.m_ReferenceAddr, ptrref.m_PointerAddr);
}
_owner.m_PointerList[i] = ptrref;
}
// update the objects 'n' all
UpdateObjectOffsets(offset, amount);
}
