/// <summary>
/// Updates all of the pointers in the script that point to an offset after the script.
/// </summary>
private void UpdatePointersAfterScript()
{
int delta = this.endOffset - this.endInternalOffset;
//
ScriptIterator it = new ScriptIterator(this);
while (!it.IsDone)
{
Command eac = it.Next();
int pointer;
if (eac.Opcode == 0x42 || eac.Opcode == 0x67 || eac.Opcode == 0xE9)
{
if (eac is EventCommand || eac.Opcode == 0xE9)
{
pointer = eac.ReadPointerSpecial(0);
if (pointer >= (this.endInternalOffset & 0xFFFF) && !eac.PointerChanged[0])
{
eac.WritePointerSpecial(0, (ushort)(pointer + delta));
eac.PointerChanged[0] = true;
}
pointer = eac.ReadPointerSpecial(1);
if (pointer >= (this.endInternalOffset & 0xFFFF) && !eac.PointerChanged[1])
{
eac.WritePointerSpecial(1, (ushort)(pointer + delta));
eac.PointerChanged[1] = true;
}
}
else
{
pointer = eac.ReadPointer();
if (pointer >= (this.endInternalOffset & 0xFFFF) && !eac.PointerChanged[0])
{
eac.WritePointer((ushort)(pointer + delta));
eac.PointerChanged[0] = true;
}
}
}
else
{
pointer = eac.ReadPointer();
if (pointer >= (this.endInternalOffset & 0xFFFF) && !eac.PointerChanged[0])
{
eac.WritePointer((ushort)(pointer + delta));
eac.PointerChanged[0] = true;
}
}
}
}
/// <summary>
/// Updates all of the pointers in the script pointing directly to a given command's offset.
/// </summary>
/// <param name="reference">The reference command in the script.</param>
private void UpdatePointersToCommand(Command reference)
{
ScriptIterator it = new ScriptIterator(this);
while (!it.IsDone)
{
Command eac = it.Next();
int pointer;
if (eac.Opcode == 0x42 || eac.Opcode == 0x67 || eac.Opcode == 0xE9)
{
if (eac is EventCommand || eac.Opcode == 0xE9)
{
pointer = eac.ReadPointerSpecial(0);
if (pointer == (reference.InternalOffset & 0xFFFF) && !eac.PointerChanged[0])
{
eac.WritePointerSpecial(0, (ushort)(reference.Offset & 0xFFFF));
eac.PointerChanged[0] = true;
}
pointer = eac.ReadPointerSpecial(1);
if (pointer == (reference.InternalOffset & 0xFFFF) && !eac.PointerChanged[1])
{
eac.WritePointerSpecial(1, (ushort)(reference.Offset & 0xFFFF));
eac.PointerChanged[1] = true;
}
}
else
{
pointer = eac.ReadPointer();
if (pointer == (reference.InternalOffset & 0xFFFF) && !eac.PointerChanged[0])
{
eac.WritePointer((ushort)(reference.Offset & 0xFFFF));
eac.PointerChanged[0] = true;
}
}
}
else
{
pointer = eac.ReadPointer();
if (pointer == (reference.InternalOffset & 0xFFFF) && !eac.PointerChanged[0])
{
eac.WritePointer((ushort)(reference.Offset & 0xFFFF));
eac.PointerChanged[0] = true;
}
}
}
}
/// <summary>
/// Updates this script's buffer data and all command offsets and pointers in this script.
/// </summary>
public void Refresh()
{
if (Commands == null)
{
return;
}
// First, write command properties to buffer
WriteToBuffer();
// Refresh offsets to exact values
int offset = BaseOffset;
foreach (var command in Commands)
{
command.Offset = offset;
offset += command.Length;
}
// Reset flags indicating pointers changed
var it = new ScriptIterator(this);
while (!it.IsDone)
{
var command = it.Next();
command.PointerChanged = new bool[256];
}
// Update all pointers to each command in this script
it = new ScriptIterator(this);
while (!it.IsDone)
{
var command = it.Next();
if (!IsUndoing && State.Instance.AutoPointerUpdate)
{
UpdatePointersToCommand(command);
}
command.InternalOffset = command.Offset;
}
// Update all pointers after this script
if (!IsUndoing && State.Instance.AutoPointerUpdate)
{
UpdatePointersAfterScript();
}
}
public void Refresh()
{
if (Commands == null)
{
return;
}
WriteToBuffer();
// refresh offsets
int offset = BaseOffset;
foreach (EventCommand esc in Commands)
{
esc.RefreshOffsets(offset);
offset += esc.Length;
}
// update internal pointers
Command eac;
ScriptIterator it = new ScriptIterator(this);
while (!it.IsDone)
{
eac = it.Next();
eac.PointerChanged = new bool[256];
}
// if undo/redo, pointers update by raw script change
if (!Undoing && State.Instance.AutoPointerUpdate)
{
UpdatePointersAfterScript();
}
it = new ScriptIterator(this);
while (!it.IsDone)
{
eac = it.Next();
if (!Undoing && State.Instance.AutoPointerUpdate)
{
UpdatePointersToCommand(eac);
}
eac.InternalOffset = eac.Offset;
}
}