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#pragma once
// stolen from ttf2sdk: sqvm types
typedef float SQFloat;
typedef long SQInteger;
typedef unsigned long SQUnsignedInteger;
typedef char SQChar;
typedef SQUnsignedInteger SQBool;
enum SQRESULT : SQInteger
{
SQRESULT_ERROR = -1,
SQRESULT_NULL = 0,
SQRESULT_NOTNULL = 1,
};
typedef SQRESULT (*SQFunction)(void* sqvm);
struct CompileBufferState
{
const SQChar* buffer;
const SQChar* bufferPlusLength;
const SQChar* bufferAgain;
CompileBufferState(const std::string& code)
{
buffer = code.c_str();
bufferPlusLength = code.c_str() + code.size();
bufferAgain = code.c_str();
}
};
struct SQFuncRegistration
{
const char* squirrelFuncName;
const char* cppFuncName;
const char* helpText;
const char* returnValueType;
const char* argTypes;
int16_t somethingThatsZero;
int16_t padding1;
int32_t unknown1;
int64_t unknown2;
int32_t unknown3;
int32_t padding2;
int64_t unknown4;
int64_t unknown5;
int64_t unknown6;
int32_t unknown7;
int32_t padding3;
void* funcPtr;
SQFuncRegistration()
{
memset(this, 0, sizeof(SQFuncRegistration));
this->padding2 = 32;
}
};
enum class ScriptContext : int
{
SERVER,
CLIENT,
UI,
NONE
};
const char* GetContextName(ScriptContext context);
// core sqvm funcs
typedef int64_t (*RegisterSquirrelFuncType)(void* sqvm, SQFuncRegistration* funcReg, char unknown);
extern RegisterSquirrelFuncType ClientRegisterSquirrelFunc;
extern RegisterSquirrelFuncType ServerRegisterSquirrelFunc;
typedef SQRESULT (*sq_compilebufferType)(void* sqvm, CompileBufferState* compileBuffer, const char* file, int a1, ScriptContext a2);
typedef SQRESULT (*sq_callType)(void* sqvm, SQInteger s1, SQBool a2, SQBool a3);
// sq stack array funcs
typedef void (*sq_newarrayType)(void* sqvm, SQInteger stackpos);
typedef SQRESULT (*sq_arrayappendType)(void* sqvm, SQInteger stackpos);
// sq stack push funcs
typedef void (*sq_pushroottableType)(void* sqvm);
typedef void (*sq_pushstringType)(void* sqvm, const SQChar* str, SQInteger length);
typedef void (*sq_pushintegerType)(void* sqvm, SQInteger i);
typedef void (*sq_pushfloatType)(void* sqvm, SQFloat f);
typedef void (*sq_pushboolType)(void* sqvm, SQBool b);
typedef SQInteger (*sq_raiseerrorType)(void* sqvm, const SQChar* error);
// sq stack get funcs
typedef const SQChar* (*sq_getstringType)(void* sqvm, SQInteger stackpos);
typedef SQInteger (*sq_getintegerType)(void* sqvm, SQInteger stackpos);
typedef SQFloat (*sq_getfloatType)(void*, SQInteger stackpos);
typedef SQBool (*sq_getboolType)(void*, SQInteger stackpos);
typedef SQRESULT (*sq_getType)(void* sqvm, SQInteger stackpos);
template <ScriptContext context> class SquirrelManager
{
private:
std::vector<SQFuncRegistration*> m_funcRegistrations;
public:
void* sqvm;
void* sqvm2;
#pragma region SQVM funcs
sq_compilebufferType sq_compilebuffer;
sq_callType sq_call;
sq_newarrayType sq_newarray;
sq_arrayappendType sq_arrayappend;
sq_pushroottableType sq_pushroottable;
sq_pushstringType sq_pushstring;
sq_pushintegerType sq_pushinteger;
sq_pushfloatType sq_pushfloat;
sq_pushboolType sq_pushbool;
sq_raiseerrorType sq_raiseerror;
sq_getstringType sq_getstring;
sq_getintegerType sq_getinteger;
sq_getfloatType sq_getfloat;
sq_getboolType sq_getbool;
sq_getType sq_get;
#pragma endregion
public:
SquirrelManager() : sqvm(nullptr) {}
void VMCreated(void* newSqvm)
{
sqvm = newSqvm;
sqvm2 = *((void**)((char*)sqvm + 8)); // honestly not 100% sure on what this is, but alot of functions take it
for (SQFuncRegistration* funcReg : m_funcRegistrations)
{
spdlog::info("Registering {} function {}", GetContextName(context), funcReg->squirrelFuncName);
if (context == ScriptContext::CLIENT || context == ScriptContext::UI)
ClientRegisterSquirrelFunc(sqvm, funcReg, 1);
else
ServerRegisterSquirrelFunc(sqvm, funcReg, 1);
}
}
void VMDestroyed()
{
sqvm = nullptr;
}
void ExecuteCode(const char* code)
{
if (!sqvm)
{
spdlog::error("Cannot execute code, {} squirrel vm is not initialised", GetContextName(context));
return;
}
spdlog::info("Executing {} script code {} ", GetContextName(context), code);
std::string strCode(code);
CompileBufferState bufferState = CompileBufferState(strCode);
SQRESULT compileResult = sq_compilebuffer(sqvm2, &bufferState, "console", -1, context);
spdlog::info("sq_compilebuffer returned {}", compileResult);
if (compileResult >= 0)
{
sq_pushroottable(sqvm2);
SQRESULT callResult = sq_call(sqvm2, 1, false, false);
spdlog::info("sq_call returned {}", callResult);
}
}
int setupfunc(const char* funcname)
{
sq_pushroottable(sqvm2);
sq_pushstring(sqvm2, funcname, -1);
int result = sq_get(sqvm2, -2);
if (result != SQRESULT_ERROR)
sq_pushroottable(sqvm2);
return result;
}
void pusharg(int arg)
{
sq_pushinteger(sqvm2, arg);
}
void pusharg(const char* arg)
{
sq_pushstring(sqvm2, arg, -1);
}
void pusharg(float arg)
{
sq_pushfloat(sqvm2, arg);
}
void pusharg(bool arg)
{
sq_pushbool(sqvm2, arg);
}
int call(int args)
{
return sq_call(sqvm2, args + 1, false, false);
}
void AddFuncRegistration(std::string returnType, std::string name, std::string argTypes, std::string helpText, SQFunction func)
{
SQFuncRegistration* reg = new SQFuncRegistration;
reg->squirrelFuncName = new char[name.size() + 1];
strcpy((char*)reg->squirrelFuncName, name.c_str());
reg->cppFuncName = reg->squirrelFuncName;
reg->helpText = new char[helpText.size() + 1];
strcpy((char*)reg->helpText, helpText.c_str());
reg->returnValueType = new char[returnType.size() + 1];
strcpy((char*)reg->returnValueType, returnType.c_str());
reg->argTypes = new char[argTypes.size() + 1];
strcpy((char*)reg->argTypes, argTypes.c_str());
reg->funcPtr = func;
m_funcRegistrations.push_back(reg);
}
};
extern SquirrelManager<ScriptContext::CLIENT>* g_ClientSquirrelManager;
extern SquirrelManager<ScriptContext::SERVER>* g_ServerSquirrelManager;
extern SquirrelManager<ScriptContext::UI>* g_UISquirrelManager;
template <ScriptContext context> SquirrelManager<context>* GetSquirrelManager();
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