public override ScriptOp LoadOperation(int offset)
{
Reader.BaseStream.Position = offset;
var opCodeIndex = Reader.ReadByte();
// 0x7B is the literal highest for Bo2
if (opCodeIndex > 0x7B)
{
return(null);
}
ScriptOp operation = new ScriptOp()
{
Metadata = ScriptOpMetadata.OperationInfo[opCodeIndex],
OpCodeOffset = (int)Reader.BaseStream.Position - 1,
};
// Use a type rather than large switch for each operation
// so we can easily fix bugs and adjust across multiple op codes
switch (operation.Metadata.OperandType)
{
case ScriptOperandType.None:
{
break;
}
case ScriptOperandType.Int8:
{
operation.Operands.Add(new ScriptOpOperand(Reader.ReadSByte()));
break;
}
case ScriptOperandType.UInt8:
{
if (operation.Metadata.OpCode == ScriptOpCode.GetNegByte)
{
operation.Operands.Add(new ScriptOpOperand(-Reader.ReadByte()));
}
else
{
operation.Operands.Add(new ScriptOpOperand(Reader.ReadByte()));
}
break;
}
case ScriptOperandType.Int16:
{
Reader.BaseStream.Position += Utility.ComputePadding((int)Reader.BaseStream.Position, 2);
operation.Operands.Add(new ScriptOpOperand(Reader.ReadInt16()));
break;
}
case ScriptOperandType.UInt16:
{
Reader.BaseStream.Position += Utility.ComputePadding((int)Reader.BaseStream.Position, 2);
if (operation.Metadata.OpCode == ScriptOpCode.GetNegUnsignedShort)
{
operation.Operands.Add(new ScriptOpOperand(-Reader.ReadUInt16()));
}
else
{
operation.Operands.Add(new ScriptOpOperand(Reader.ReadUInt16()));
}
break;
}
case ScriptOperandType.Int32:
{
Reader.BaseStream.Position += Utility.ComputePadding((int)Reader.BaseStream.Position, 4);
operation.Operands.Add(new ScriptOpOperand(Reader.ReadInt32()));
break;
}
case ScriptOperandType.UInt32:
{
Reader.BaseStream.Position += Utility.ComputePadding((int)Reader.BaseStream.Position, 4);
operation.Operands.Add(new ScriptOpOperand(Reader.ReadUInt32()));
break;
}
case ScriptOperandType.Hash:
{
Reader.BaseStream.Position += Utility.ComputePadding((int)Reader.BaseStream.Position, 4);
operation.Operands.Add(new ScriptOpOperand("\"" + GetHashValue(Reader.ReadUInt32(), "hash_") + "\""));
break;
}
case ScriptOperandType.Float:
{
Reader.BaseStream.Position += Utility.ComputePadding((int)Reader.BaseStream.Position, 4);
operation.Operands.Add(new ScriptOpOperand(Reader.ReadSingle()));
break;
}
case ScriptOperandType.Vector:
{
Reader.BaseStream.Position += Utility.ComputePadding((int)Reader.BaseStream.Position, 4);
operation.Operands.Add(new ScriptOpOperand(Reader.ReadSingle(), Reader.ReadSingle(), Reader.ReadSingle()));
break;
}
case ScriptOperandType.VectorFlags:
{
var flags = Reader.ReadByte();
// Set each flag, it's either 1.0, -1.0, or simply 0.0
operation.Operands.Add(new ScriptOpOperand(
string.Format("({0}, {1}, {2})",
(flags & 0x20) != 0 ? 1.0f : (flags & 0x10) != 0 ? -1.0f : 0.0f,
(flags & 0x08) != 0 ? 1.0f : (flags & 0x04) != 0 ? -1.0f : 0.0f,
(flags & 0x02) != 0 ? 1.0f : (flags & 0x01) != 0 ? -1.0f : 0.0f)));
break;
}
case ScriptOperandType.String:
{
// If it's anim animation, etc. we can just read at the location, but for strings
// we can just grab via pointer
switch (operation.Metadata.OpCode)
{
case ScriptOpCode.GetString:
Reader.BaseStream.Position += Utility.ComputePadding((int)Reader.BaseStream.Position, 2);
operation.Operands.Add(new ScriptOpOperand("\"" + GetString((int)Reader.BaseStream.Position).Value + "\""));
Reader.BaseStream.Position += 2;
break;
case ScriptOpCode.GetIString:
Reader.BaseStream.Position += Utility.ComputePadding((int)Reader.BaseStream.Position, 2);
operation.Operands.Add(new ScriptOpOperand("&\"" + GetString((int)Reader.BaseStream.Position).Value + "\""));
Reader.BaseStream.Position += 2;
break;
default:
Reader.BaseStream.Position += Utility.ComputePadding((int)Reader.BaseStream.Position, 4);
operation.Operands.Add(new ScriptOpOperand("%" + Reader.PeekNullTerminatedString(Reader.ReadInt32())));
break;
}
break;
}
case ScriptOperandType.VariableName:
{
Reader.BaseStream.Position += Utility.ComputePadding((int)Reader.BaseStream.Position, 2);
operation.Operands.Add(new ScriptOpOperand(Reader.PeekNullTerminatedString(Reader.ReadUInt16())));
break;
}
case ScriptOperandType.FunctionPointer:
{
Reader.BaseStream.Position += Utility.ComputePadding((int)Reader.BaseStream.Position, 4);
operation.Operands.Add(new ScriptOpOperand(Reader.PeekNullTerminatedString(Reader.ReadInt32())));
break;
}
case ScriptOperandType.Call:
{
// Skip param count, it isn't stored here until in memory
Reader.BaseStream.Position += 1;
try
{
Reader.BaseStream.Position += Utility.ComputePadding((int)Reader.BaseStream.Position, 4);
operation.Operands.Add(new ScriptOpOperand(Reader.PeekNullTerminatedString(Reader.ReadInt32())));
}
catch
{
return(null);
}
break;
}
case ScriptOperandType.VariableList:
{
var varCount = Reader.ReadByte();
for (int i = 0; i < varCount; i++)
{
Reader.BaseStream.Position += Utility.ComputePadding((int)Reader.BaseStream.Position, 2);
operation.Operands.Add(new ScriptOpOperand(Reader.PeekNullTerminatedString(Reader.ReadUInt16())));
}
break;
}
case ScriptOperandType.SwitchEnd:
{
var switches = LoadEndSwitch();
foreach (var switchBlock in switches)
{
operation.Operands.Add(new ScriptOpOperand(switchBlock));
}
break;
}
default:
{
throw new ArgumentException("Invalid Op Type", "OpType");
}
}
operation.OpCodeSize = (int)Reader.BaseStream.Position - offset;
return(operation);
}
public override ScriptOp LoadOperation(int offset)
{
Reader.BaseStream.Position = offset;
var opCodeIndex = Reader.ReadUInt16();
ScriptOp operation;
// This is literally close to how Black Ops 3 handles it
// as in, the value is literally an index
if ((opCodeIndex & 0x2000) == 0)
{
if (opCodeIndex > 0x4000)
{
return(null);
}
var opCode = OpCodeTable[opCodeIndex];
if (opCode == ScriptOpCode.Invalid)
{
return(null);
}
operation = new ScriptOp()
{
Metadata = ScriptOpMetadata.OperationInfo[(int)opCode],
OpCodeOffset = (int)Reader.BaseStream.Position - 2,
};
}
else
{
throw new ArgumentException("Invalid Op Code");
}
// Use a type rather than large switch for each operation
// so we can easily fix bugs and adjust across multiple op codes
// Like Black Ops 2 all are aligned to different values
switch (operation.Metadata.OperandType)
{
case ScriptOperandType.None:
{
break;
}
case ScriptOperandType.Int8:
{
operation.Operands.Add(new ScriptOpOperand(Reader.ReadSByte()));
break;
}
case ScriptOperandType.UInt8:
{
if (operation.Metadata.OpCode == ScriptOpCode.GetNegByte)
{
operation.Operands.Add(new ScriptOpOperand(-Reader.ReadByte()));
}
else
{
operation.Operands.Add(new ScriptOpOperand(Reader.ReadByte()));
}
break;
}
case ScriptOperandType.Int16:
{
Reader.BaseStream.Position += Utility.ComputePadding((int)Reader.BaseStream.Position, 2);
operation.Operands.Add(new ScriptOpOperand(Reader.ReadInt16()));
break;
}
case ScriptOperandType.UInt16:
{
Reader.BaseStream.Position += Utility.ComputePadding((int)Reader.BaseStream.Position, 2);
if (operation.Metadata.OpCode == ScriptOpCode.GetNegUnsignedShort)
{
operation.Operands.Add(new ScriptOpOperand(-Reader.ReadUInt16()));
}
else
{
operation.Operands.Add(new ScriptOpOperand(Reader.ReadUInt16()));
}
break;
}
case ScriptOperandType.Int32:
{
Reader.BaseStream.Position += Utility.ComputePadding((int)Reader.BaseStream.Position, 4);
operation.Operands.Add(new ScriptOpOperand(Reader.ReadInt32()));
break;
}
case ScriptOperandType.UInt32:
{
Reader.BaseStream.Position += Utility.ComputePadding((int)Reader.BaseStream.Position, 4);
operation.Operands.Add(new ScriptOpOperand(Reader.ReadUInt32()));
break;
}
case ScriptOperandType.Hash:
{
Reader.BaseStream.Position += Utility.ComputePadding((int)Reader.BaseStream.Position, 4);
operation.Operands.Add(new ScriptOpOperand("\"" + GetHashValue(Reader.ReadUInt32(), "hash_") + "\""));
break;
}
case ScriptOperandType.Float:
{
Reader.BaseStream.Position += Utility.ComputePadding((int)Reader.BaseStream.Position, 4);
operation.Operands.Add(new ScriptOpOperand(Reader.ReadSingle()));
break;
}
case ScriptOperandType.Vector:
{
Reader.BaseStream.Position += Utility.ComputePadding((int)Reader.BaseStream.Position, 4);
operation.Operands.Add(new ScriptOpOperand(Reader.ReadSingle()));
break;
}
case ScriptOperandType.VectorFlags:
{
var flags = Reader.ReadByte();
// Set each flag, it's either 1.0, -1.0, or simply 0.0
operation.Operands.Add(new ScriptOpOperand(
string.Format("({0}, {1}, {2})",
(flags & 0x20) != 0 ? 1.0f : (flags & 0x10) != 0 ? -1.0f : 0.0f,
(flags & 0x08) != 0 ? 1.0f : (flags & 0x04) != 0 ? -1.0f : 0.0f,
(flags & 0x02) != 0 ? 1.0f : (flags & 0x01) != 0 ? -1.0f : 0.0f)));
break;
}
case ScriptOperandType.String:
{
// If it's anim animation, etc. we can just read at the location, but for strings
// we can just grab via pointer
switch (operation.Metadata.OpCode)
{
case ScriptOpCode.GetString:
Reader.BaseStream.Position += Utility.ComputePadding((int)Reader.BaseStream.Position, 4);
operation.Operands.Add(new ScriptOpOperand("\"" + GetString((int)Reader.BaseStream.Position)?.Value + "\""));
Reader.BaseStream.Position += 4;
break;
case ScriptOpCode.GetIString:
Reader.BaseStream.Position += Utility.ComputePadding((int)Reader.BaseStream.Position, 4);
operation.Operands.Add(new ScriptOpOperand("&\"" + GetString((int)Reader.BaseStream.Position)?.Value + "\""));
Reader.BaseStream.Position += 4;
break;
case ScriptOpCode.GetAnimation:
Reader.BaseStream.Position += Utility.ComputePadding((int)Reader.BaseStream.Position, 8);
operation.Operands.Add(new ScriptOpOperand("%" + Reader.PeekNullTerminatedString(Reader.ReadInt32())));
Reader.BaseStream.Position += 4;
break;
}
break;
}
case ScriptOperandType.VariableName:
{
Reader.BaseStream.Position += Utility.ComputePadding((int)Reader.BaseStream.Position, 4);
var name = GetHashValue(Reader.ReadUInt32(), "var_");
operation.Operands.Add(new ScriptOpOperand(name));
break;
}
case ScriptOperandType.FunctionPointer:
{
Reader.BaseStream.Position += Utility.ComputePadding((int)Reader.BaseStream.Position, 8);
operation.Operands.Add(new ScriptOpOperand("&" + GetHashValue(Reader.ReadUInt32(), "function_")));
Reader.BaseStream.Position += 4;
break;
}
case ScriptOperandType.Call:
{
if (operation.Metadata.OpCode == ScriptOpCode.ClassFunctionCall)
{
var paramterCount = Reader.ReadByte();
Reader.BaseStream.Position += Utility.ComputePadding((int)Reader.BaseStream.Position, 4);
operation.Operands.Add(new ScriptOpOperand(GetHashValue(Reader.ReadUInt32(), "function_")));
operation.Operands.Add(new ScriptOpOperand(paramterCount));
}
else
{
// Skip param count, it isn't stored here until in memory
Reader.BaseStream.Position += 1;
Reader.BaseStream.Position += Utility.ComputePadding((int)Reader.BaseStream.Position, 8);
operation.Operands.Add(new ScriptOpOperand(GetHashValue(Reader.ReadUInt32(), "function_")));
Reader.BaseStream.Position += 4;
}
break;
}
case ScriptOperandType.VariableList:
{
var varCount = Reader.ReadByte();
for (int i = 0; i < varCount; i++)
{
Reader.BaseStream.Position += Utility.ComputePadding((int)Reader.BaseStream.Position, 4);
operation.Operands.Add(new ScriptOpOperand(GetHashValue(Reader.ReadUInt32(), "var_")));
Reader.BaseStream.Position += 1;
}
break;
}
case ScriptOperandType.SwitchEnd:
{
var switches = LoadEndSwitch();
foreach (var switchBlock in switches)
{
operation.Operands.Add(new ScriptOpOperand(switchBlock));
}
break;
}
default:
{
throw new ArgumentException("Invalid Op Type", "OpType");
}
}
// Ensure we're at the next op, all operations are aligned to 2 bytes
Reader.BaseStream.Position += Utility.ComputePadding((int)Reader.BaseStream.Position, 2);
operation.OpCodeSize = (int)Reader.BaseStream.Position - offset;
return(operation);
}
