Destiny Patch support

CMakeLists.txt

@@ -161,6 +161,8 @@ add_library(${PROJECT_NAME} OBJECT
 	src/game_config.h
 	src/game_config_game.cpp
 	src/game_config_game.h
+	src/game_destiny.cpp
+	src/game_destiny.h
 	src/game_dynrpg.cpp
 	src/game_dynrpg.h
 	src/game_enemy.cpp

Makefile.am

@@ -141,6 +141,8 @@ libeasyrpg_player_a_SOURCES = \
 	src/game_config.h \
 	src/game_config_game.cpp \
 	src/game_config_game.h \
+	src/game_destiny.cpp \
+	src/game_destiny.h \
 	src/game_dynrpg.cpp \
 	src/game_dynrpg.h \
 	src/game_enemy.cpp \
@@ -736,6 +738,7 @@ test_runner_SOURCES = \
 	tests/game_character_flash.cpp \
 	tests/game_character_move.cpp \
 	tests/game_character_moveto.cpp \
+	tests/game_destiny.cpp \
 	tests/game_enemy.cpp \
 	tests/game_event.cpp \
 	tests/game_player_input.cpp \

src/game_config_game.cpp

@@ -241,6 +241,7 @@ void Game_ConfigGame::PrintActivePatches() {
 	};
 
 	add_bool(patch_easyrpg);
+	add_bool(patch_destiny);
 	add_bool(patch_dynrpg);
 	add_bool(patch_common_this_event);
 	add_bool(patch_unlock_pics);

src/game_config_game.h

@@ -39,6 +39,7 @@ struct Game_ConfigGame {
 	StringConfigParam engine_str{ "Engine", "", "Game", "Engine", std::string() };
 	BoolConfigParam fake_resolution{ "Fake Metrics", "Makes games run on higher resolutions (with some success)", "Game", "FakeResolution", false };
 	BoolConfigParam patch_easyrpg{ "EasyRPG", "EasyRPG Engine Extensions", "Patch", "EasyRPG", false };
+	BoolConfigParam patch_destiny{ "Destiny Patch", "", "Patch", "Destiny", false };
 	BoolConfigParam patch_dynrpg{ "DynRPG", "", "Patch", "DynRPG", false };
 	ConfigParam<int> patch_maniac{ "Maniac Patch", "", "Patch", "Maniac", 0 };
 	BoolConfigParam patch_common_this_event{ "Common This Event", "Support \"This Event\" in Common Events", "Patch", "CommonThisEvent", false };

src/game_destiny.cpp

@@ -0,0 +1,343 @@
+/*
+ * This file is part of EasyRPG Player.
+ *
+ * EasyRPG Player is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * EasyRPG Player is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with EasyRPG Player. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+// Headers
+#include "game_destiny.h"
+#include "filefinder.h"
+
+#ifndef EMSCRIPTEN
+#include "exe_reader.h"
+#endif // !EMSCRIPTEN
+#include "output.h"
+
+using Destiny::InterpretFlag;
+using Destiny::MainFunctions::Interpreter;
+
+using lcf::ToString;
+using lcf::rpg::EventCommand;
+using lcf::rpg::SaveEventExecFrame;
+
+
+// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
+//				Game_Destiny implementations
+// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
+
+void Game_Destiny::Load()
+{
+	// Do not load Destiny whether player cannot find "Destiny.dll"
+	if (! FileFinder::Game().Exists(DESTINY_DLL))
+	{
+		return;
+	}
+
+	uint32_t dllVersion = 0;
+	uint32_t language = 0;
+	uint32_t gameVersion = 0;
+	uint32_t extra = 0;
+	uint32_t dwordSize = 0;
+	uint32_t floatSize = 0;
+	uint32_t stringSize = 0;
+
+#ifndef EMSCRIPTEN
+	Filesystem_Stream::InputStream exe = FileFinder::Game().OpenFile(EXE_NAME);
+
+	if (exe)
+	{
+		exe.seekg(0x00030689, std::ios_base::beg);
+		exe.read(reinterpret_cast<char*>(&stringSize), sizeof(uint32_t));
+		exe.seekg(1, std::ios_base::cur);
+		exe.read(reinterpret_cast<char*>(&floatSize), sizeof(uint32_t));
+		exe.seekg(1, std::ios_base::cur);
+		exe.read(reinterpret_cast<char*>(&dwordSize), sizeof(uint32_t));
+		exe.seekg(1, std::ios_base::cur);
+		exe.read(reinterpret_cast<char*>(&extra), sizeof(uint32_t));
+		exe.seekg(1, std::ios_base::cur);
+		exe.read(reinterpret_cast<char*>(&gameVersion), sizeof(uint32_t));
+		exe.seekg(1, std::ios_base::cur);
+		exe.read(reinterpret_cast<char*>(&language), sizeof(uint32_t));
+		exe.seekg(1, std::ios_base::cur);
+		exe.read(reinterpret_cast<char*>(&dllVersion), sizeof(uint32_t));
+		exe.seekg(1, std::ios_base::cur);
+	}
+#else
+	// TODO [XGB]: Find to manage Destiny initialization parameters on Emscripten
+	dllVersion = 0x20000;
+	language = Destiny::Language::ENGLISH;
+	gameVersion = 0x20000107;
+	extra = 0x01;
+	dwordSize = floatSize = stringSize = 0x64;
+#endif // !EMSCRIPTEN
+
+	Initialize(dllVersion, language, gameVersion, extra, dwordSize, floatSize, stringSize);
+}
+
+Game_Destiny::Game_Destiny()
+{
+	_dllVersion = {};
+	_gameVersion = {};
+	_language = Destiny::Language::DEUTSCH;
+	_extra = 0U;
+	_trueColor = 0U;
+	_decimalComma = false;
+	_rm2k3 = false;
+	_protect = false;
+}
+
+Game_Destiny::~Game_Destiny()
+{
+	Terminate();
+}
+
+void Game_Destiny::Initialize(
+	uint32_t dllVersion,
+	uint32_t language,
+	uint32_t gameVersion,
+	uint32_t extra,
+	uint32_t dwordSize,
+	uint32_t floatSize,
+	uint32_t stringSize
+)
+{
+	_dllVersion = Destiny::Version(dllVersion);
+	_gameVersion = Destiny::Version(gameVersion);
+	_language = language <= 1
+		? static_cast<Destiny::Language>(language)
+		: Destiny::Language::ENGLISH;
+	_extra = extra;
+	_decimalComma = _language == Destiny::Language::DEUTSCH;
+
+	EvaluateExtraFlags();
+	CheckVersionInfo();
+
+	// Init containers
+	_dwords.resize(dwordSize);
+	_floats.resize(floatSize);
+	_strings.resize(stringSize);
+
+	// TODO: Init File container
+	// TODO: Init ClientSocket container
+
+	// Debug
+	Output::Debug("[Destiny] Initialized");
+	Output::Debug("[Destiny] Language: {}", _decimalComma ? "Deutsch" : "English");
+	Output::Debug("[Destiny] DLL Version: {}", _dllVersion.toString());
+	Output::Debug("[Destiny] Dwords: {}", dwordSize);
+	Output::Debug("[Destiny] Floats: {}", floatSize);
+	Output::Debug("[Destiny] Strings: {}", stringSize);
+	Output::Debug("[Destiny] RPG Maker version: {}", _rm2k3 ? 2003 : 2000);
+}
+
+void Game_Destiny::Terminate()
+{
+	_dwords.clear();
+	_floats.clear();
+	_strings.clear();
+
+	// TODO [XGB]: Clear File container
+	// TODO [XGB]: Clear ClientSocket container
+}
+
+bool Game_Destiny::Main(SaveEventExecFrame& frame)
+{
+	const char* script;
+	InterpretFlag flag;
+
+	script = _interpreter.MakeString(frame);
+	flag = InterpretFlag::IF_EXIT;
+
+	_interpreter.CleanUpData();
+	_interpreter.LoadInterpretStack();
+
+	while (! _interpreter.IsEndOfScript())
+	{
+		if (_interpreter.IsEndOfLine())
+		{
+			_interpreter.ScriptNextChar();
+		}
+
+		flag = _interpreter.Interpret();
+		if (flag == InterpretFlag::IF_EXIT)
+		{
+			break;
+		}
+	}
+
+	Output::Debug("DestinyScript Code:\n{}", script);
+	_interpreter.FreeString();
+
+	return true;
+}
+
+void Game_Destiny::EvaluateExtraFlags()
+{
+	_trueColor = (_extra & Destiny::DF_TRUECOLOR) << 9;
+	_protect = _extra & Destiny::DF_PROTECT;
+}
+
+void Game_Destiny::CheckVersionInfo()
+{
+	uint32_t gameVersionMajor;
+
+	gameVersionMajor = _gameVersion.major;
+
+	if (! (gameVersionMajor == 0x2000 || gameVersionMajor == 0x2003))
+	{
+		Output::Error("[Destiny]: {} is not a valid version", gameVersionMajor);
+	}
+
+	_rm2k3 = gameVersionMajor == 0x2003;
+}
+
+
+// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
+//			MainFunctions / Interpreter
+// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
+
+Interpreter::Interpreter()
+{
+	CleanUpData();
+	_scriptPtr = nullptr;
+}
+
+const char* Interpreter::MakeString(SaveEventExecFrame& frame)
+{
+	std::string code;
+
+	int32_t& current = frame.current_command;
+	const std::vector<EventCommand>& cmdList = frame.commands;
+	std::vector<EventCommand>::const_iterator it = cmdList.begin() + current++;
+
+	code = ToString((*it++).string);
+
+	while (it != cmdList.cend() && it->code == static_cast<int32_t>(EventCommand::Code::Comment_2))
+	{
+		code += '\n';
+		code += ToString((*it++).string);
+		++current;
+	}
+
+	_destinyScript = code;
+	return _scriptPtr = _destinyScript.data();
+}
+
+void Interpreter::FreeString()
+{
+	_destinyScript = "";
+	_scriptPtr = _destinyScript.data();
+}
+
+void Interpreter::SkipWhiteSpace()
+{
+	while (IsWhiteSpace(*_scriptPtr))
+	{
+		++_scriptPtr;
+	}
+}
+
+const size_t Interpreter::GetWordLen()
+{
+	char* endPtr = _scriptPtr;
+
+	while (IsWordChar(*endPtr))
+	{
+		++endPtr;
+	}
+
+	return endPtr - _scriptPtr;
+}
+
+const InterpretFlag Interpreter::Interpret()
+{
+	char* code;
+	//uint8_t flags[4];
+	InterpretFlag returnType;
+
+	size_t wordLen;
+
+	code = nullptr;
+	returnType = IF_COMMAND;
+
+	SkipSpace();
+	wordLen = GetWordLen();
+
+	return IF_EXIT;
+}
+
+void Interpreter::LoadInterpretStack()
+{
+	//
+}
+
+void Interpreter::SkipSpace()
+{
+	bool finished = false;
+	char next = '\0';
+
+	while (! finished)
+	{
+		if (! IsWhiteSpace(*++_scriptPtr))
+		{
+			if (*_scriptPtr == '/')
+			{
+				next = *(_scriptPtr + 1);
+
+				if (next == '/')
+				{
+					finished = LineComment();
+				}
+				else if (next == '*')
+				{
+					finished = BlockComment();
+				}
+			}
+			else
+			{
+				finished = true;
+			}
+		}
+	}
+}
+
+const bool Interpreter::LineComment()
+{
+	_scriptPtr += 2;
+
+	while (*(++_scriptPtr))
+	{
+		if (*_scriptPtr == 0x0A)
+		{
+			return false;
+		}
+	}
+
+	return true;
+}
+
+const bool Interpreter::BlockComment()
+{
+	_scriptPtr += 2;
+
+	while (*(++_scriptPtr))
+	{
+		if (*_scriptPtr == '*' && *(++_scriptPtr) == '/')
+		{
+			return false;
+		}
+	}
+
+	return true;
+}