public void WriteSourceBlock(BinaryWriter writer, int roomVersion)
{
byte[] buffer = AGSStringUtils.GetASCIIBytes(SourceCode);
//NOTE(adm244): not a bug, it encrypts by decrypting
buffer = AGSEncryption.DecryptAvisBuffer(buffer);
writer.Write((Int32)buffer.Length);
writer.Write((byte[])buffer);
}
public void ReadSourceBlock(BinaryReader reader, int roomVersion)
{
int length = reader.ReadInt32();
byte[] buffer = reader.ReadBytes(length);
//NOTE(adm244): not a bug, it decrypts by encrypting
buffer = AGSEncryption.EncryptAvisBuffer(buffer);
SourceCode = AGSStringUtils.ConvertToString(buffer);
}
public static string ReadEncryptedCString(this BinaryReader reader)
{
Int32 length = reader.ReadInt32();
if ((length <= 0) || (length > AGSStringUtils.MaxCStringLength))
{
throw new IndexOutOfRangeException();
}
//NOTE(adm244): ASCII ReadChars is not reliable in this case since it replaces bytes > 0x7F
// https://referencesource.microsoft.com/#mscorlib/system/text/asciiencoding.cs,879
byte[] buffer = reader.ReadBytes(length);
return(AGSEncryption.DecryptAvis(buffer));
}
private byte[] EncryptRoomPassword(byte[] buffer, int roomVersion)
{
if (roomVersion < 9)
{
byte[] bufferEncrypted = new byte[buffer.Length];
for (int i = 0; i < bufferEncrypted.Length; ++i)
{
bufferEncrypted[i] = (byte)(buffer[i] - (byte)60);
}
return(bufferEncrypted);
}
//NOTE(adm244): not a bug, it encrypts by decrypting
return(AGSEncryption.DecryptAvisBuffer(buffer));
}
private CLibFile[] ReadCLibPre10(BinaryReader reader, int version)
{
CLibFile[] files = new CLibFile[1];
files[0] = new CLibFile();
files[0].Filename = RootFilename;
byte salt = reader.ReadByte();
byte reserved = reader.ReadByte();
Int16 assetsCount = reader.ReadInt16();
AGSCLibAsset[] assets = new AGSCLibAsset[assetsCount];
//TODO(adm244): figure out how it's used in pre 6, ignored for now
byte[] password = reader.ReadBytes(13);
for (int i = 0; i < assets.Length; ++i)
{
assets[i] = new AGSCLibAsset();
string filename = reader.ReadFixedCString(13);
assets[i].Filename = AGSEncryption.DecryptSalt(filename, salt);
}
for (int i = 0; i < assetsCount; ++i)
{
assets[i].Size = reader.ReadInt32();
}
//TODO(adm244): read "flags and ratio", skipping for now
reader.BaseStream.Seek(assetsCount * sizeof(Int16), SeekOrigin.Current);
assets[0].Offset = reader.BaseStream.Position;
for (int i = 1; i < assets.Length; ++i)
{
assets[i].Offset = assets[i - 1].Offset + assets[i - 1].Size;
}
return(BuildAssetsLists(assets, ref files));
}
public void LoadFromStream(BinaryReader r)
{
// verify signature
char[] dta_sig = r.ReadChars(DTA_SIGNATURE.Length);
string dta_sig_string = new string(dta_sig);
Debug.Assert(DTA_SIGNATURE == dta_sig_string);
// parse dta header
Int32 dta_version = r.ReadInt32();
Int32 strlen = r.ReadInt32();
string engine_version = r.ReadFixedCString(strlen);
// parse capability strings
if (dta_version >= 48) // 3.4.1
{
Int32 capabilities_count = r.ReadInt32();
for (int i = 0; i < capabilities_count; ++i)
{
string capability = r.ReadString();
}
}
// parse game setup struct base
AGSAlignedStream ar = new AGSAlignedStream(r);
setup.LoadFromStream(ar, dta_version);
if (dta_version > 32) // 3.x
{
// parse save game info
save_guid = r.ReadChars(40);
save_extension = r.ReadChars(20);
save_folder = r.ReadChars(50);
}
// parse font info
if (dta_version < 50) // 3.5
{
font_flags = r.ReadBytes(setup.fonts_count);
font_outlines = r.ReadBytes(setup.fonts_count);
if (dta_version >= 48) // 3.4.1
{
for (int i = 0; i < setup.fonts_count; ++i)
{
Int32 font_offset_y = r.ReadInt32();
if (dta_version >= 49) // 3.4.1_2
{
Int32 font_linespacing = r.ReadInt32();
}
}
}
}
else
{
for (int i = 0; i < setup.fonts_count; ++i)
{
Int32 flags = r.ReadInt32();
Int32 sizePt = r.ReadInt32();
Int32 outline = r.ReadInt32();
Int32 yOffset = r.ReadInt32();
Int32 lineSpacing = Math.Max(0, r.ReadInt32());
}
}
// parse sprite flags
Int32 sprites_count_max = 6000;
if (dta_version >= 24) // pre 2.5.6
{
sprites_count_max = r.ReadInt32();
}
sprite_flags = r.ReadBytes(sprites_count_max);
// parse inventory items info
inventoryItems = new AGSInventoryItem[setup.inventory_items_count];
AGSAlignedStream ar1 = new AGSAlignedStream(r);
for (int i = 0; i < setup.inventory_items_count; ++i)
{
inventoryItems[i] = new AGSInventoryItem();
inventoryItems[i].LoadFromStream(ar1);
//NOTE(adm244): reset aligned stream??
}
// parse cursors info
AGSAlignedStream ar2 = new AGSAlignedStream(r);
cursors = new AGSCursorInfo[setup.cursors_count];
for (int i = 0; i < cursors.Length; ++i)
{
cursors[i] = new AGSCursorInfo();
cursors[i].LoadFromStream(ar2);
}
characters = new AGSCharacter[setup.characters_count];
if (dta_version > 32) // 3.x
{
// parse characters interaction scripts
for (int i = 0; i < characters.Length; ++i)
{
characters[i] = new AGSCharacter();
characters[i].interactions.LoadFromStream(r);
}
// parse inventory items interaction scripts
for (int i = 1; i < inventoryItems.Length; ++i)
{
//inventoryItems[i] = new AGSInventoryItem();
inventoryItems[i].interactions.LoadFromStream(r);
}
}
else // 2.72 and older
{
for (int i = 0; i < characters.Length; ++i)
{
characters[i] = new AGSCharacter();
characters[i].interactions_old.LoadFromStream(r);
}
for (int i = 0; i < inventoryItems.Length; ++i)
{
//inventoryItems[i] = new AGSInventoryItem();
inventoryItems[i].interactions_old.LoadFromStream(r);
}
Int32 globalvars_count = r.ReadInt32();
globalvars = new AGSInteractionVariable[globalvars_count];
for (int i = 0; i < globalvars.Length; ++i)
{
globalvars[i] = new AGSInteractionVariable();
globalvars[i].LoadFromStream(r);
}
}
// parse dictionary
if (setup.load_dictionary != 0)
{
dictionary.LoadFromStream(r);
}
// parse global script
globalScript.ReadFromStream(r);
// parse dialog script
if (dta_version > 37) // 3.1.0
{
dialogScript.ReadFromStream(r);
}
// parse other scripts
if (dta_version >= 31) // 2.7.0
{
Int32 modules_count = r.ReadInt32();
scriptModules = new AGSScript[modules_count];
for (int i = 0; i < scriptModules.Length; ++i)
{
scriptModules[i] = new AGSScript();
scriptModules[i].ReadFromStream(r);
}
}
// parse views
if (dta_version > 32) // 3.x
{
views = new AGSView[setup.views_count];
for (int i = 0; i < views.Length; ++i)
{
views[i] = new AGSView();
views[i].LoadFromStream(r);
}
}
else // 2.7.2 and older
{
views272 = new AGSView272[setup.views_count];
for (int i = 0; i < views272.Length; ++i)
{
views272[i] = new AGSView272();
views272[i].LoadFromStream(r);
}
}
// parse characters
AGSAlignedStream ar3 = new AGSAlignedStream(r);
for (int i = 0; i < characters.Length; ++i)
{
characters[i].LoadFromStream(ar3);
ar.Reset();
}
if (dta_version >= 21) // 2.54
{
//TODO(adm244): real parsing
r.BaseStream.Seek(20 * 50, SeekOrigin.Current);
}
ParseGlobalMessages(r, dta_version);
ParseDialogs(r);
if (dta_version <= 37) // 3.0 and older
{
for (int i = 0; i < dialogs.Length; ++i)
{
dialogs[i].old_dialog_code = r.ReadBytes(dialogs[i].code_size);
Int32 scriptSize = r.ReadInt32();
byte[] encodedStr = r.ReadBytes(scriptSize);
dialogs[i].old_dialog_script = AGSEncryption.DecryptAvis(encodedStr);
}
if (dta_version <= 25) // 2.60 and older
{
while (true)
{
uint mark = r.ReadUInt32();
r.BaseStream.Seek(-sizeof(UInt32), SeekOrigin.Current);
if (mark == GUI_SIGNATURE)
{
break;
}
string dialogString = r.ReadCString();
oldDialogStrings.Add(dialogString);
}
}
else
{
while (true)
{
Int32 length = r.ReadInt32();
if ((UInt32)length == GUI_SIGNATURE)
{
r.BaseStream.Seek(-sizeof(UInt32), SeekOrigin.Current);
break;
}
byte[] encodedStr = r.ReadBytes(length);
oldDialogStrings.Add(AGSEncryption.DecryptAvis(encodedStr));
}
}
}
int gui_version = ParseGUIs(r);
ParseGUIControls(r, gui_version);
if (dta_version >= 25) // 2.60+
{
ParsePlugins(r);
ParseCustomProperties(r);
ParseObjectsScriptNames(r, dta_version);
}
if (dta_version >= 41) // 3.2.0+
{
audioStorage = new AGSAudioStorage();
audioStorage.LoadFromStream(r);
}
if (dta_version >= 36) // 2.8 ???
{
ParseRoomsDebugInfo(r);
}
}
//private CLibFile[] ReadCLib20(BinaryReader reader)
//{
// //NOTE(adm244): assuming asset files are stored sequentially
// Int32 filesCount = reader.ReadInt32();
// CLibFile[] files = new CLibFile[filesCount];
// for (int i = 0; i < files.Length; ++i)
// files[i].Filename = reader.ReadCString(50);
//
// Int32 assetsCount = reader.ReadInt32();
// AGSCLibAsset[] assets = new AGSCLibAsset[assetsCount];
//
// for (int i = 0; i < assets.Length; ++i)
// {
// Int16 length = reader.ReadInt16();
// length /= 5;
//
// byte[] jibzler = reader.ReadBytes(length);
// assets[i].Filename = AGSEncryption.DecryptJibzle(jibzler);
// }
//
// for (int i = 0; i < assets.Length; ++i)
// assets[i].Offset = reader.ReadInt32();
//
// for (int i = 0; i < assets.Length; ++i)
// assets[i].Size = reader.ReadInt32();
//
// for (int i = 0; i < assets.Length; ++i)
// assets[i].AssetFileIndex = reader.ReadByte();
//
// return BuildAssetsLists(assets, ref files);
//}
private CLibFile[] ReadCLibPre21(BinaryReader reader, int version)
{
Int32 filesCount = reader.ReadInt32();
CLibFile[] files = new CLibFile[filesCount];
for (int i = 0; i < files.Length; ++i)
{
files[i] = new CLibFile();
if (version == 20)
{
files[i].Filename = reader.ReadCString(50);
}
else
{
files[i].Filename = reader.ReadFixedCString(20);
}
}
Int32 asset_count = reader.ReadInt32();
AGSCLibAsset[] assets = new AGSCLibAsset[asset_count];
for (int i = 0; i < assets.Length; ++i)
{
assets[i] = new AGSCLibAsset();
if (version == 20)
{
Int16 length = reader.ReadInt16();
length /= 5;
byte[] jibzler = reader.ReadBytes(length);
assets[i].Filename = AGSEncryption.DecryptJibzle(jibzler);
}
else if (version >= 11)
{
byte[] jibzler = reader.ReadBytes(25);
assets[i].Filename = AGSEncryption.DecryptJibzle(jibzler);
}
else
{
assets[i].Filename = reader.ReadFixedCString(25);
}
}
for (int i = 0; i < assets.Length; ++i)
{
assets[i].Offset = reader.ReadInt32();
}
for (int i = 0; i < assets.Length; ++i)
{
assets[i].Size = reader.ReadInt32();
}
for (int i = 0; i < assets.Length; ++i)
{
assets[i].AssetFileIndex = reader.ReadByte();
}
return(BuildAssetsLists(assets, ref files));
}
public static void WriteEncryptedCString(this BinaryWriter writer, string text)
{
byte[] buffer = AGSEncryption.EncryptAvis(text);
writer.Write((Int32)buffer.Length);
writer.Write((byte[])buffer);
}
