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#include "pch.h"
#include "modmanager.h"
#include "convar.h"
#include "rapidjson/error/en.h"
#include "rapidjson/document.h"
#include <filesystem>
#include <fstream>
#include <string>
#include <sstream>
#include <vector>
ModManager* g_ModManager;
Mod::Mod(fs::path modDir, char* jsonBuf)
{
wasReadSuccessfully = false;
rapidjson::Document modJson;
modJson.Parse<rapidjson::ParseFlag::kParseCommentsFlag | rapidjson::ParseFlag::kParseTrailingCommasFlag>(jsonBuf);
// fail if parse error
if (modJson.HasParseError())
{
spdlog::error("Failed reading mod file {}: encountered parse error \"{}\" at offset {}", (modDir / "mod.json").string(), GetParseError_En(modJson.GetParseError()), modJson.GetErrorOffset());
return;
}
// fail if it's not a json obj (could be an array, string, etc)
if (!modJson.IsObject())
{
spdlog::error("Failed reading mod file {}: file is not a JSON object", (modDir / "mod.json").string());
return;
}
// basic mod info
// name is required
if (!modJson.HasMember("Name"))
{
spdlog::error("Failed reading mod file {}: missing required member \"Name\"", (modDir / "mod.json").string());
return;
}
Name = modJson["Name"].GetString();
if (modJson.HasMember("Description"))
Description = modJson["Description"].GetString();
else
Description = "";
if (modJson.HasMember("Version"))
Version = modJson["Version"].GetString();
else
{
Version = "0.0.0";
spdlog::warn("Mod file {} is missing a version, consider adding a version", (modDir / "mod.json").string());
}
if (modJson.HasMember("DownloadLink"))
DownloadLink = modJson["DownloadLink"].GetString();
else
DownloadLink = "";
if (modJson.HasMember("RequiredOnClient"))
RequiredOnClient = modJson["RequiredOnClient"].GetBool();
else
RequiredOnClient = false;
// mod convars
if (modJson.HasMember("ConVars") && modJson["ConVars"].IsArray())
{
for (auto& convarObj : modJson["ConVars"].GetArray())
{
if (!convarObj.IsObject() || !convarObj.HasMember("Name") || !convarObj.HasMember("DefaultValue"))
continue;
ModConVar* convar = new ModConVar;
convar->Name = convarObj["Name"].GetString();
convar->DefaultValue = convarObj["DefaultValue"].GetString();
if (convarObj.HasMember("HelpString"))
convar->HelpString = convarObj["HelpString"].GetString();
else
convar->HelpString = "";
// todo: could possibly parse FCVAR names here instead
if (convarObj.HasMember("Flags"))
convar->Flags = convarObj["Flags"].GetInt();
else
convar->Flags = FCVAR_NONE;
ConVars.push_back(convar);
}
}
// mod scripts
if (modJson.HasMember("Scripts") && modJson["Scripts"].IsArray())
{
for (auto& scriptObj : modJson["Scripts"].GetArray())
{
if (!scriptObj.IsObject() || !scriptObj.HasMember("Path") || !scriptObj.HasMember("RunOn"))
continue;
ModScript* script = new ModScript;
script->Path = scriptObj["Path"].GetString();
script->RsonRunOn = scriptObj["RunOn"].GetString();
// callbacks
for (auto iterator = scriptObj.MemberBegin(); iterator != scriptObj.MemberEnd(); iterator++)
{
if (!iterator->name.IsString() || !iterator->value.IsObject())
continue;
ModScriptCallback* callback = new ModScriptCallback;
callback->HookedCodeCallback = iterator->name.GetString();
if (iterator->value.HasMember("Before") && iterator->value["Before"].IsString())
callback->BeforeCallback = iterator->value["Before"].GetString();
if (iterator->value.HasMember("After") && iterator->value["After"].IsString())
callback->AfterCallback = iterator->value["After"].GetString();
script->Callbacks.push_back(callback);
}
Scripts.push_back(script);
}
}
wasReadSuccessfully = true;
}
ModManager::ModManager()
{
LoadMods();
}
void ModManager::LoadMods()
{
std::vector<fs::path> modDirs;
// get mod directories
for (fs::directory_entry dir : fs::directory_iterator(MOD_FOLDER_PATH))
if (fs::exists(dir.path() / "mod.json"))
modDirs.push_back(dir.path());
for (fs::path modDir : modDirs)
{
// read mod json file
std::ifstream jsonStream(modDir / "mod.json");
std::stringstream jsonStringStream;
// fail if no mod json
if (jsonStream.fail())
{
spdlog::warn("Mod {} has a directory but no mod.json", modDir.string());
continue;
}
while (jsonStream.peek() != EOF)
jsonStringStream << (char)jsonStream.get();
jsonStream.close();
Mod* mod = new Mod(modDir, (char*)jsonStringStream.str().c_str());
if (mod->wasReadSuccessfully)
{
spdlog::info("Loaded mod {} successfully", mod->Name);
loadedMods.push_back(mod);
}
else
{
spdlog::warn("Skipping loading mod file {}", (modDir / "mod.json").string());
delete mod;
}
}
for (Mod* mod : loadedMods)
{
for (ModConVar* convar : mod->ConVars)
if (g_CustomConvars.find(convar->Name) == g_CustomConvars.end()) // make sure convar isn't registered yet
RegisterConVar(convar->Name.c_str(), convar->DefaultValue.c_str(), convar->Flags, convar->HelpString.c_str());
}
}
void InitialiseModManager(HMODULE baseAddress)
{
g_ModManager = new ModManager();
}
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