/
runtimescriptvalue.cpp
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/
runtimescriptvalue.cpp
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//=============================================================================
//
// Adventure Game Studio (AGS)
//
// Copyright (C) 1999-2011 Chris Jones and 2011-2024 various contributors
// The full list of copyright holders can be found in the Copyright.txt
// file, which is part of this source code distribution.
//
// The AGS source code is provided under the Artistic License 2.0.
// A copy of this license can be found in the file License.txt and at
// https://opensource.org/license/artistic-2-0/
//
//=============================================================================
#include "script/runtimescriptvalue.h"
#include <string.h> // for memcpy()
#include "ac/dynobj/cc_scriptobject.h"
#include "util/memory.h"
using namespace AGS::Common;
//
// NOTE to future optimizers: I am using 'this' ptr here to better
// distinguish Runtime Values.
//
uint8_t RuntimeScriptValue::ReadByte() const
{
switch (this->Type)
{
case kScValStackPtr:
case kScValGlobalVar:
if (RValue->Type == kScValData)
{
return *(uint8_t*)(GetRValuePtrWithOffset());
}
else
{
return static_cast<uint8_t>(RValue->IValue);
}
case kScValStaticArray:
case kScValScriptObject:
return this->ObjMgr->ReadInt8(this->Ptr, this->IValue);
default:
return *((uint8_t*)this->GetPtrWithOffset());
}
}
int16_t RuntimeScriptValue::ReadInt16() const
{
switch (this->Type)
{
case kScValStackPtr:
if (RValue->Type == kScValData)
{
return *(int16_t*)(GetRValuePtrWithOffset());
}
else
{
return static_cast<int16_t>(RValue->IValue);
}
case kScValGlobalVar:
if (RValue->Type == kScValData)
{
return Memory::ReadInt16LE(GetRValuePtrWithOffset());
}
else
{
return static_cast<int16_t>(RValue->IValue);
}
case kScValStaticArray:
case kScValScriptObject:
return this->ObjMgr->ReadInt16(this->Ptr, this->IValue);
default:
return *((int16_t*)this->GetPtrWithOffset());
}
}
int32_t RuntimeScriptValue::ReadInt32() const
{
switch (this->Type)
{
case kScValStackPtr:
if (RValue->Type == kScValData)
{
return *(int32_t*)(GetRValuePtrWithOffset());
}
else
{
return static_cast<int32_t>(RValue->IValue);
}
case kScValGlobalVar:
if (RValue->Type == kScValData)
{
return Memory::ReadInt32LE(GetRValuePtrWithOffset());
}
else
{
return static_cast<uint32_t>(RValue->IValue);
}
case kScValStaticArray:
case kScValScriptObject:
return this->ObjMgr->ReadInt32(this->Ptr, this->IValue);
default:
return *((int32_t*)this->GetPtrWithOffset());
}
}
void RuntimeScriptValue::WriteByte(uint8_t val)
{
switch (this->Type)
{
case kScValStackPtr:
case kScValGlobalVar:
if (RValue->Type == kScValData)
{
*(uint8_t*)(GetRValuePtrWithOffset()) = val;
}
else
{
RValue->SetUInt8(val); // set RValue as int
}
break;
case kScValStaticArray:
case kScValScriptObject:
this->ObjMgr->WriteInt8(this->Ptr, this->IValue, val);
break;
default:
*((uint8_t*)this->GetPtrWithOffset()) = val;
break;
}
}
void RuntimeScriptValue::WriteInt16(int16_t val)
{
switch (this->Type)
{
case kScValStackPtr:
if (RValue->Type == kScValData)
{
*(int16_t*)(GetRValuePtrWithOffset()) = val;
}
else
{
RValue->SetInt16(val); // set RValue as int
}
break;
case kScValGlobalVar:
if (RValue->Type == kScValData)
{
Memory::WriteInt16LE(GetRValuePtrWithOffset(), val);
}
else
{
RValue->SetInt16(val); // set RValue as int
}
break;
case kScValStaticArray:
case kScValScriptObject:
this->ObjMgr->WriteInt16(this->Ptr, this->IValue, val);
break;
default:
*((int16_t*)this->GetPtrWithOffset()) = val;
break;
}
}
void RuntimeScriptValue::WriteInt32(int32_t val)
{
switch (this->Type)
{
case kScValStackPtr:
if (RValue->Type == kScValData)
{
*(int32_t*)(GetRValuePtrWithOffset()) = val;
}
else
{
RValue->SetInt32(val); // set RValue as int
}
break;
case kScValGlobalVar:
if (RValue->Type == kScValData)
{
Memory::WriteInt32LE(GetRValuePtrWithOffset(), val);
}
else
{
RValue->SetInt32(val); // set RValue as int
}
break;
case kScValStaticArray:
case kScValScriptObject:
this->ObjMgr->WriteInt32(this->Ptr, this->IValue, val);
break;
default:
*((int32_t*)this->GetPtrWithOffset()) = val;
break;
}
}
RuntimeScriptValue &RuntimeScriptValue::DirectPtr()
{
if (Type == kScValGlobalVar || Type == kScValStackPtr)
{
int ival = IValue;
*this = *RValue;
IValue += ival;
}
if (Ptr)
{
if (Type == kScValScriptObject)
Ptr = ObjMgr->GetFieldPtr(Ptr, IValue);
else
Ptr = PtrU8 + IValue;
IValue = 0;
}
return *this;
}
RuntimeScriptValue &RuntimeScriptValue::DirectPtrObj()
{
if (Type == kScValGlobalVar || Type == kScValStackPtr)
*this = *RValue;
return *this;
}
void *RuntimeScriptValue::GetDirectPtr() const
{
const RuntimeScriptValue *temp_val = this;
int ival = temp_val->IValue;
if (temp_val->Type == kScValGlobalVar || temp_val->Type == kScValStackPtr)
{
temp_val = temp_val->RValue;
ival += temp_val->IValue;
}
if (temp_val->Type == kScValScriptObject)
return temp_val->ObjMgr->GetFieldPtr(temp_val->Ptr, ival);
else
return temp_val->PtrU8 + ival;
}