Merge 21e0b2fc6f into 5a08031caf

3rdParty/sfml/CMakeLists.txt

@@ -0,0 +1,12 @@
+include(functions/FetchContent_ExcludeFromAll_backport)
+
+set(SFML_BUILD_WINDOW OFF)
+set(SFML_BUILD_GRAPHICS OFF)
+set(SFML_BUILD_AUDIO OFF)
+
+include(FetchContent)
+FetchContent_Declare_ExcludeFromAll(sfml
+    GIT_REPOSITORY https://github.com/SFML/SFML
+    GIT_TAG 016bea9491ccafc3529019fe1d403885a8b3a6ae
+)
+FetchContent_MakeAvailable_ExcludeFromAll(sfml)

CMake/Definitions.cmake

@@ -19,6 +19,7 @@ foreach(
   DEVILUTIONX_RESAMPLER_SDL
   DEVILUTIONX_PALETTE_TRANSPARENCY_BLACK_16_LUT
   SCREEN_READER_INTEGRATION
+  DAPI_SERVER
   UNPACKED_MPQS
   UNPACKED_SAVES
   DEVILUTIONX_WINDOWS_NO_WCHAR

CMake/Dependencies.cmake

@@ -340,3 +340,10 @@ if(GPERF)
   find_package(Gperftools REQUIRED)
   message("INFO: ${GPERFTOOLS_LIBRARIES}")
 endif()
+
+if(DAPI_SERVER)
+  find_package(SFML 3.0 COMPONENTS Network CONFIG QUIET)
+  if(NOT SFML_FOUND)
+    add_subdirectory(3rdParty/sfml)
+  endif()
+endif()

CMake/VcPkgManifestFeatures.cmake

@@ -12,6 +12,9 @@ endif()
 if(USE_GETTEXT_FROM_VCPKG)
   list(APPEND VCPKG_MANIFEST_FEATURES "translations")
 endif()
+if(DAPI_SERVER)
+  list(APPEND VCPKG_MANIFEST_FEATURES "dapi")
+endif()
 if(BUILD_TESTING)
   list(APPEND VCPKG_MANIFEST_FEATURES "tests")
 endif()

CMakeLists.txt

@@ -38,6 +38,8 @@ cmake_dependent_option(PACKET_ENCRYPTION "Encrypt network packets" ON "NOT NONET
 if(CMAKE_TOOLCHAIN_FILE MATCHES "vcpkg.cmake$")
   option(USE_GETTEXT_FROM_VCPKG "Add vcpkg dependency for gettext[tools] for compiling translations" OFF)
 endif()
+option(DAPI_SERVER "Build with DAPI server component for gameplay automation" OFF)
+mark_as_advanced(DAPI_SERVER)
 option(BUILD_TESTING "Build tests." ON)
 
 # These must be included after the options above but before the `project` call.

CMakeSettings.json

@@ -39,6 +39,28 @@
         }
       ]
     },
+    {
+      "name": "x64-Debug-DAPI",
+      "generator": "Ninja",
+      "configurationType": "Debug",
+      "buildRoot": "${workspaceRoot}\\build\\${name}",
+      "installRoot": "${env.USERPROFILE}\\CMakeBuilds\\${workspaceHash}\\install\\${name}",
+      "inheritEnvironments": [ "msvc_x64" ],
+      "intelliSenseMode": "windows-msvc-x64",
+      "enableClangTidyCodeAnalysis": true,
+      "variables": [
+        {
+          "name": "DISCORD_INTEGRATION",
+          "value": "False",
+          "type": "BOOL"
+        },
+        {
+          "name": "DAPI_SERVER",
+          "value": "True",
+          "type": "BOOL"
+        }
+      ]
+    },
     {
       "name": "x64-Debug-SDL1",
       "generator": "Ninja",
@@ -149,4 +171,4 @@
       ]
     }
   ]
-}
+}

Packaging/windows/CMakePresets.json

@@ -36,6 +36,10 @@
 				"DISABLE_LTO": {
 					"type": "BOOL",
 					"value": "ON"
+				},
+				"DAPI_SERVER": {
+					"type": "BOOL",
+					"value": "ON"
 				}
 			}
 		},

Source/CMakeLists.txt

@@ -872,6 +872,17 @@ if(DISCORD_INTEGRATION)
   )
 endif()
 
+if(DAPI_SERVER)
+  list(APPEND libdevilutionx_SRCS
+    dapi/Server.cpp
+    dapi/Backend/DAPIBackendCore/DAPIProtoClient.cpp
+    dapi/Backend/Messages/command.proto
+    dapi/Backend/Messages/data.proto
+    dapi/Backend/Messages/game.proto
+    dapi/Backend/Messages/init.proto
+    dapi/Backend/Messages/message.proto)
+endif()
+
 if(SCREEN_READER_INTEGRATION)
   list(APPEND libdevilutionx_SRCS
     utils/screen_reader.cpp
@@ -990,6 +1001,10 @@ if(DISCORD_INTEGRATION)
   target_link_libraries(libdevilutionx PRIVATE discord discord_game_sdk)
 endif()
 
+if(DAPI_SERVER)
+  target_link_libraries(libdevilutionx PRIVATE SFML::Network)
+endif()
+
 if(SCREEN_READER_INTEGRATION)
   if(WIN32)
     target_compile_definitions(libdevilutionx PRIVATE Tolk)
@@ -1048,3 +1063,28 @@ elseif(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
     target_link_libraries(libdevilutionx PUBLIC c++fs)
   endif()
 endif()
+
+if(DAPI_SERVER)
+  find_package(Protobuf REQUIRED)
+  
+  target_link_libraries(libdevilutionx PUBLIC protobuf::libprotobuf-lite)
+  find_package(absl REQUIRED)
+  set(PROTO_BINARY_DIR "${CMAKE_BINARY_DIR}/generated")
+  
+  file(MAKE_DIRECTORY ${PROTO_BINARY_DIR})
+  
+  target_include_directories(libdevilutionx PRIVATE ${Protobuf_INCLUDE_DIRS})
+  
+  # Generate the protobuf files into the 'generated' directory within the build tree
+  protobuf_generate(
+      TARGET libdevilutionx
+      IMPORT_DIRS "${CMAKE_CURRENT_SOURCE_DIR}/dapi/Backend/Messages"
+      PROTOC_OUT_DIR "${PROTO_BINARY_DIR}"
+  )
+  
+  # Make sure the generated protobuf files are correctly included in the build
+  target_include_directories(libdevilutionx PUBLIC "$<BUILD_INTERFACE:${PROTO_BINARY_DIR}>")
+  include_directories("${PROTO_BINARY_DIR}/dapi/Backend/Messages")
+  
+  target_include_directories(libdevilutionx PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}/dapi/Backend/DAPIBackendCore")
+endif()

Source/dapi/Backend/DAPIBackendCore/DAPIProtoClient.cpp

@@ -0,0 +1,214 @@
+#include <thread>
+
+#include "DAPIProtoClient.h"
+
+namespace DAPI {
+DAPIProtoClient::DAPIProtoClient()
+    : mt(static_cast<unsigned int>(std::chrono::system_clock::now().time_since_epoch().count()))
+{
+	udpbound = false;
+	connectionPort = 1025;
+}
+
+void DAPIProtoClient::checkForConnection()
+{
+	if (isConnected())
+		return;
+
+	sf::Packet packet;
+	udpSocket.setBlocking(false);
+	if (!udpbound) {
+		if (udpSocket.bind(1024, sf::IpAddress::Any) != sf::Socket::Status::Done)
+			return;
+		udpbound = true;
+	}
+
+	std::optional<sf::IpAddress> sender = sf::IpAddress::Any;
+	auto port = udpSocket.getLocalPort();
+	if (udpSocket.receive(packet, sender, port) != sf::Socket::Status::Done)
+		return;
+
+	auto size = packet.getDataSize();
+	std::unique_ptr<char[]> packetContents(new char[size]);
+	memcpy(packetContents.get(), packet.getData(), size);
+
+	auto currentMessage = std::make_unique<dapi::message::Message>();
+	currentMessage->ParseFromArray(packetContents.get(), static_cast<int>(size));
+
+	if (!currentMessage->has_initbroadcast())
+		return;
+
+	auto reply = std::make_unique<dapi::message::Message>();
+	auto initResponse = reply->mutable_initresponse();
+
+	initResponse->set_port(static_cast<int>(connectionPort));
+
+	packet.clear();
+	size = reply->ByteSizeLong();
+	std::unique_ptr<char[]> buffer(new char[size]);
+
+	reply->SerializeToArray(&buffer[0], static_cast<int>(size));
+	packet.append(buffer.get(), size);
+
+	udpSocket.send(packet, sender.value(), port);
+	udpSocket.unbind();
+	udpbound = false;
+
+	tcpListener.accept(tcpSocket);
+	return;
+}
+
+void DAPIProtoClient::lookForServer()
+{
+	if (isConnected())
+		return;
+
+	sf::Packet packet;
+	auto broadcastMessage = std::make_unique<dapi::message::Message>();
+	broadcastMessage->mutable_initbroadcast();
+
+	auto size = broadcastMessage->ByteSizeLong();
+	std::unique_ptr<char[]> buffer(new char[size]);
+
+	broadcastMessage->SerializeToArray(&buffer[0], size);
+	packet.append(buffer.get(), size);
+
+	std::optional<sf::IpAddress> server = sf::IpAddress::Broadcast;
+	unsigned short port = 1024;
+
+	udpSocket.send(packet, server.value(), port);
+	server = sf::IpAddress::Any;
+	udpSocket.setBlocking(false);
+	// Sleep to give backend a chance to send the packet.
+	{
+		using namespace std::chrono_literals;
+		std::this_thread::sleep_for(2s);
+	}
+	if (udpSocket.receive(packet, server, port) == sf::Socket::Status::Done) {
+		size = packet.getDataSize();
+		std::unique_ptr<char[]> replyBuffer(new char[size]);
+		memcpy(replyBuffer.get(), packet.getData(), size);
+
+		auto currentMessage = std::make_unique<dapi::message::Message>();
+		currentMessage->ParseFromArray(replyBuffer.get(), size);
+
+		if (!currentMessage->has_initresponse())
+			return;
+
+		connectionPort = static_cast<unsigned short>(currentMessage->initresponse().port());
+
+		tcpSocket.connect(server.value(), connectionPort);
+		if (!tcpSocket.getRemoteAddress().has_value())
+			fprintf(stderr, "%s", "Connection failed.\n");
+	}
+}
+
+void DAPIProtoClient::transmitMessages()
+{
+	// Check that we are connected to a game server.
+	if (!isConnected())
+		return;
+
+	std::unique_ptr<dapi::message::Message> currentMessage;
+	sf::Packet packet;
+	// Loop until the message queue is empty.
+	while (!messageQueue.empty()) {
+		packet.clear();
+		currentMessage = std::move(messageQueue.front());
+		messageQueue.pop_front();
+		auto size = currentMessage->ByteSizeLong();
+		if (size > 0) {
+			std::unique_ptr<char[]> buffer(new char[size]);
+			currentMessage->SerializeToArray(&buffer[0], size);
+			packet.append(buffer.get(), size);
+		}
+		if (tcpSocket.send(packet) != sf::Socket::Status::Done) {
+			// Error sending message.
+			fprintf(stderr, "Failed to send a Message. Disconnecting.\n");
+			disconnect();
+		}
+	}
+
+	// Finished with queue, send the EndOfQueue message.
+	currentMessage = std::make_unique<dapi::message::Message>();
+	currentMessage->mutable_endofqueue();
+	packet.clear();
+	auto size = currentMessage->ByteSizeLong();
+	std::unique_ptr<char[]> buffer(new char[size]);
+	currentMessage->SerializeToArray(&buffer[0], size);
+	packet.append(buffer.get(), size);
+	if (tcpSocket.send(packet) != sf::Socket::Status::Done) {
+		// Error sending EndOfQueue
+		fprintf(stderr, "Failed to send end of queue message. Disconnecting.\n");
+		disconnect();
+	}
+}
+
+void DAPIProtoClient::receiveMessages()
+{
+	// Check that we are connected to a game server or client.
+	if (!isConnected())
+		return;
+
+	std::unique_ptr<dapi::message::Message> currentMessage;
+	sf::Packet packet;
+	// Loop until the end of queue message is received.
+	while (true) {
+		packet.clear();
+		currentMessage = std::make_unique<dapi::message::Message>();
+		if (tcpSocket.receive(packet) != sf::Socket::Status::Done) {
+			fprintf(stderr, "Failed to receive message. Disconnecting.\n");
+			disconnect();
+			return;
+		}
+		auto size = packet.getDataSize();
+		std::unique_ptr<char[]> packetContents(new char[size]);
+		memcpy(packetContents.get(), packet.getData(), size);
+		currentMessage->ParseFromArray(packetContents.get(), packet.getDataSize());
+		if (currentMessage->has_endofqueue())
+			return;
+		messageQueue.push_back(std::move(currentMessage));
+	}
+}
+
+void DAPIProtoClient::disconnect()
+{
+	if (!isConnected())
+		return;
+	tcpSocket.disconnect();
+}
+
+void DAPIProtoClient::initListen()
+{
+	tcpListener.setBlocking(true);
+	while (tcpListener.listen(connectionPort) != sf::Socket::Status::Done)
+		connectionPort = static_cast<unsigned short>(getRandomInteger(1025, 49151));
+}
+
+void DAPIProtoClient::stopListen()
+{
+	tcpListener.close();
+}
+
+void DAPIProtoClient::queueMessage(std::unique_ptr<dapi::message::Message> newMessage)
+{
+	messageQueue.push_back(std::move(newMessage));
+}
+
+std::unique_ptr<dapi::message::Message> DAPIProtoClient::getNextMessage()
+{
+	auto nextMessage = std::move(messageQueue.front());
+	messageQueue.pop_front();
+	return nextMessage;
+}
+
+bool DAPIProtoClient::isConnected() const
+{
+	return tcpSocket.getRemoteAddress().has_value();
+}
+
+int DAPIProtoClient::messageQueueSize() const
+{
+	return messageQueue.size();
+}
+} // namespace DAPI

Source/dapi/Backend/DAPIBackendCore/DAPIProtoClient.h

@@ -0,0 +1,45 @@
+#pragma once
+
+#include <deque>
+#include <random>
+
+#include <SFML/Network.hpp>
+
+#include "message.pb.h"
+
+namespace DAPI {
+struct DAPIProtoClient {
+	DAPIProtoClient();
+
+	void checkForConnection();
+	void lookForServer();
+	void transmitMessages();
+	void receiveMessages();
+	void disconnect();
+	void initListen();
+	void stopListen();
+
+	void queueMessage(std::unique_ptr<dapi::message::Message> newMessage);
+	std::unique_ptr<dapi::message::Message> getNextMessage();
+
+	bool isConnected() const;
+	int messageQueueSize() const;
+
+private:
+	sf::UdpSocket udpSocket;
+	sf::TcpSocket tcpSocket;
+	sf::TcpListener tcpListener;
+	sf::SocketSelector socketSelector;
+	std::deque<std::unique_ptr<dapi::message::Message>> messageQueue;
+	std::mt19937 mt;
+
+	int getRandomInteger(int min, int max)
+	{
+		std::uniform_int_distribution<int> randomNumber(min, max);
+		return randomNumber(mt);
+	}
+
+	unsigned short connectionPort;
+	bool udpbound;
+};
+} // namespace DAPI

Source/dapi/Backend/Messages/command.proto

@@ -0,0 +1,185 @@
+syntax = "proto3";
+option optimize_for = LITE_RUNTIME;
+
+package dapi.commands;
+
+message SetFPS {
+	uint32 FPS = 1;
+}
+
+message CancelQText {
+
+}
+
+message Move {
+	uint32 type = 1;
+	uint32 targetX = 2;
+	uint32 targetY = 3;
+}
+
+message Talk {
+	uint32 targetX = 1;
+	uint32 targetY = 2;
+}
+
+message SelectStoreOption {
+	uint32 option = 1;
+}
+
+message BuyItem {
+	uint32 ID = 1;
+}
+
+message SellItem {
+	uint32 ID = 1;
+}
+
+message RechargeItem {
+	uint32 ID = 1;
+}
+
+message RepairItem {
+	uint32 ID = 1;
+}
+
+message AttackMonster {
+	uint32 index = 1;
+}
+
+message AttackXY {
+	sint32 x = 1;
+	sint32 y = 2;
+}
+
+message OperateObject {
+	uint32 index = 1;
+}
+
+message UseBeltItem {
+	uint32 slot = 1;
+}
+
+message ToggleCharacterSheet {
+
+}
+
+message IncreaseStat {
+	uint32 stat = 1;
+}
+
+message GetItem {
+	uint32 ID = 1;
+}
+
+message SetSpell {
+	sint32 spellID = 1;
+	sint32 spellType = 2;
+}
+
+message CastMonster  {
+	uint32 index = 1;
+}
+
+message CastXY {
+	sint32 x = 1;
+	sint32 y = 2;
+}
+
+message ToggleInventory {
+
+}
+
+message PutInCursor {
+	uint32 ID = 1;
+}
+
+message PutCursorItem {
+	sint32 target = 1;
+}
+
+message DropCursorItem {
+
+}
+
+message UseItem {
+	uint32 ID = 1;
+}
+
+message IdentifyStoreItem {
+	uint32 ID = 1;
+}
+
+message DisarmTrap {
+	uint32 index = 1;
+}
+
+message SkillRepair {
+	uint32 ID = 1;
+}
+
+message SkillRecharge {
+	uint32 ID = 1;
+}
+
+message ToggleMenu {
+
+}
+
+message SaveGame {
+
+}
+
+message Quit {
+
+}
+
+message ClearCursor {
+
+}
+
+message IdentifyItem {
+	uint32 ID = 1;
+}
+
+message SendChat {
+	string message = 1;
+}
+
+message Command {
+	oneof command {
+		Move move = 1;
+		Talk talk = 2;
+		SelectStoreOption option = 3;
+		BuyItem buyItem = 4;
+		SellItem sellItem = 5;
+		RechargeItem rechargeItem = 6;
+		RepairItem repairItem = 7;
+		AttackMonster attackMonster = 8;
+		AttackXY attackXY = 9;
+		OperateObject operateObject = 10;
+		UseBeltItem useBeltItem = 11;
+		ToggleCharacterSheet toggleCharacterSheet = 12;
+		IncreaseStat increaseStat = 13;
+		GetItem getItem = 14;
+		SetSpell setSpell = 15;
+		CastMonster castMonster = 16;
+		CastXY castXY = 17;
+		ToggleInventory toggleInventory = 18;
+		PutInCursor putInCursor = 19;
+		PutCursorItem putCursorItem = 20;
+		DropCursorItem dropCursorItem = 21;
+		UseItem useItem = 22;
+		IdentifyStoreItem identifyStoreItem = 23;
+		CancelQText cancelQText = 24;
+		SetFPS setFPS = 25;
+		DisarmTrap disarmTrap = 26;
+		SkillRepair skillRepair = 27;
+		SkillRecharge skillRecharge = 28;
+		ToggleMenu toggleMenu = 29;
+		SaveGame saveGame = 30;
+		Quit quit = 31;
+		ClearCursor clearCursor = 32;
+		IdentifyItem identifyItem = 33;
+		SendChat sendChat = 34;
+	}
+}

Source/dapi/Backend/Messages/data.proto

@@ -0,0 +1,179 @@
+syntax = "proto3";
+option optimize_for = LITE_RUNTIME;
+
+package dapi.data;
+
+message QuestData {
+	uint32 id = 1;
+	uint32 state = 2;
+}
+
+message PortalData {
+	uint32 x = 1;
+	uint32 y = 2;
+	uint32 player = 3;
+}
+
+message MissileData {
+	sint32 type = 1;
+	uint32 x = 2;
+	uint32 y = 3;
+	sint32 xvel = 4;
+	sint32 yvel = 5;
+	sint32 sx = 6;
+	sint32 sy = 7;
+}
+
+message ObjectData {
+	uint32 x = 1;
+	uint32 y = 2;
+	sint32 type = 3;
+	sint32 shrineType = 4;
+	bool solid = 5;
+	sint32 doorState = 6;
+	bool selectable = 7;
+	uint32 index = 8;
+	bool trapped = 9;
+}
+
+message MonsterData {
+	uint32 index = 1;
+	sint32 x = 2;
+	sint32 y = 3;
+	sint32 futx = 4;
+	sint32 futy = 5;
+	string name = 6;
+	sint32 type = 7;
+	sint32 kills = 8;
+	sint32 mode = 9;
+	bool unique = 10;
+}
+
+message TriggerData {
+	uint32 lvl = 1;
+	sint32 x = 2;
+	sint32 y = 3;
+	sint32 type = 4;
+}
+
+message TileData {
+	sint32 type = 1;
+	bool solid = 2;
+	sint32 x = 3;
+	sint32 y = 4;
+	bool stopMissile = 5;
+}
+
+message TownerData {
+	uint32 ID = 1;
+	uint32 _ttype = 2;
+	sint32 _tx = 3;
+	sint32 _ty = 4;
+	string _tName = 5;
+}
+
+message ItemData {
+	uint32 ID = 1;
+	sint32 _itype = 2;
+	sint32 _ix = 3;
+	sint32 _iy = 4;
+
+	bool _iIdentified = 5;
+	uint32 _iMagical = 6;
+	string _iName = 7;
+	string _iIName = 8;
+	uint32 _iClass = 9;
+	sint32 _iCurs = 10;
+	sint32 _iValue = 11;
+	sint32 _iMinDam = 12;
+	sint32 _iMaxDam = 13;
+	sint32 _iAC = 14;
+	sint32 _iFlags = 15;
+	sint32 _iMiscId = 16;
+	sint32 _iSpell = 17;
+	sint32 _iCharges = 18;
+	sint32 _iMaxCharges = 19;
+	sint32 _iDurability = 20;
+	sint32 _iMaxDur = 21;
+	sint32 _iPLDam = 22;
+    sint32 _iPLToHit = 23;
+    sint32 _iPLAC = 24;
+    sint32 _iPLStr = 25;
+    sint32 _iPLMag = 26;
+    sint32 _iPLDex = 27;
+    sint32 _iPLVit = 28;
+    sint32 _iPLFR = 29;
+    sint32 _iPLLR = 30;
+    sint32 _iPLMR = 31;
+    sint32 _iPLMana = 32;
+    sint32 _iPLHP = 33;
+    sint32 _iPLDamMod = 34;
+    sint32 _iPLGetHit = 35;
+    sint32 _iPLLight = 36;
+    sint32 _iSplLvlAdd = 37;
+	sint32 _iFMinDam = 38;
+    sint32 _iFMaxDam = 39;
+    sint32 _iLMinDam = 40;
+    sint32 _iLMaxDam = 41;
+	sint32 _iPrePower = 42;
+	sint32 _iSufPower = 43;
+	sint32 _iMinStr = 44;
+	sint32 _iMinMag = 45;
+	sint32 _iMinDex = 46;
+	bool _iStatFlag = 47;
+	sint32 IDidx = 48;
+}
+
+message PlayerData {
+	sint32 _pmode = 1;
+	sint32 pnum = 2;
+	sint32 plrlevel = 3;
+	sint32 _px = 4;
+	sint32 _py = 5;
+	sint32 _pfutx = 6;
+	sint32 _pfuty = 7;
+	sint32 _pdir = 8;
+	sint32 _pRSpell = 9;
+	uint32 _pRsplType = 10;
+	repeated uint32 _pSplLvl = 11;
+	uint64 _pMemSpells = 12;
+	uint64 _pAblSpells = 13;
+	uint64 _pScrlSpells = 14;
+	string _pName = 15;
+	uint32 _pClass = 16;
+	uint32 _pStrength = 17;
+	uint32 _pBaseStr = 18;
+	uint32 _pMagic = 19;
+	uint32 _pBaseMag = 20;
+	uint32 _pDexterity = 21;
+	uint32 _pBaseDex = 22;
+	uint32 _pVitality = 23;
+	uint32 _pBaseVit = 24;
+	uint32 _pStatPts = 25;
+	uint32 _pDamageMod = 26;
+	uint32 _pHitPoints = 27;
+	uint32 _pMaxHP = 28;
+	sint32 _pMana = 29;
+	uint32 _pMaxMana = 30;
+	uint32 _pLevel = 31;
+	uint32 _pExperience = 32;
+	uint32 _pArmorClass = 33;
+	uint32 _pMagResist = 34;
+	uint32 _pFireResist = 35;
+	uint32 _pLightResist = 36;
+	uint32 _pGold = 37;
+	repeated sint32 InvBody = 38;
+	repeated sint32 InvList = 39;
+	repeated sint32 InvGrid = 40;
+	repeated sint32 SpdList = 41;
+	sint32 HoldItem = 42;
+	uint32 _pIAC = 43;
+	uint32 _pIMinDam = 44;
+	uint32 _pIMaxDam = 45;
+	uint32 _pIBonusDam = 46;
+	uint32 _pIBonusToHit = 47;
+	uint32 _pIBonusAC = 48;
+	uint32 _pIBonusDamMod = 49;
+	int32 _pISplLvlAdd = 50;
+	bool pManaShield = 51;
+}

Source/dapi/Backend/Messages/game.proto

@@ -0,0 +1,40 @@
+syntax = "proto3";
+option optimize_for = LITE_RUNTIME;
+import "data.proto";
+
+package dapi.game;
+
+message FrameUpdate {
+	uint32 player = 1;
+	sint32 stextflag = 2;
+	sint32 pauseMode = 3;
+	bool menuOpen = 4;
+	uint32 cursor = 5;
+	bool chrflag = 6;
+	bool invflag = 7;
+	bool qtextflag = 8;
+	string qtext = 9;
+	uint32 currlevel = 10;
+	bool setlevel = 11;
+	uint32 fps = 12;
+	uint32 gameMode = 13;
+	uint32 gnDifficulty = 14;
+	uint32 connectedTo = 15;
+	uint32 stashGold = 16;
+	
+	repeated dapi.data.TileData dPiece = 17;
+	repeated dapi.data.PlayerData playerData = 18;
+	repeated dapi.data.ItemData itemData = 19;
+	repeated uint32 groundItemID = 20;
+	repeated dapi.data.TownerData townerData = 21;
+	repeated uint32 storeOption = 22;
+	repeated uint32 storeItems = 23;
+	repeated uint32 stashItems = 24;
+	repeated dapi.data.TriggerData triggerData = 25;
+	repeated dapi.data.MonsterData monsterData = 26;
+	repeated dapi.data.ObjectData objectData = 27;
+	repeated dapi.data.MissileData missileData = 28;
+	repeated dapi.data.PortalData portalData = 29;
+	repeated dapi.data.QuestData questData = 30;
+	repeated string chatMessages = 31;
+}

Source/dapi/Backend/Messages/init.proto

@@ -0,0 +1,12 @@
+syntax = "proto3";
+option optimize_for = LITE_RUNTIME;
+
+package dapi.init;
+
+message ClientBroadcast {
+
+}
+
+message ServerResponse {
+	uint32 port = 1;
+}

Source/dapi/Backend/Messages/message.proto

@@ -0,0 +1,26 @@
+syntax = "proto3";
+option optimize_for = LITE_RUNTIME;
+import "init.proto";
+import "game.proto";
+import "command.proto";
+
+package dapi.message;
+
+// Empty message to intidate end of queue
+message EndofQueue {
+
+}
+
+// Wrapper used to distinguish which message is which
+message Message{
+	oneof msg {
+		dapi.init.ClientBroadcast initBroadcast = 1;
+		dapi.init.ServerResponse initResponse = 2;
+		
+		dapi.game.FrameUpdate frameUpdate = 3;
+
+		dapi.commands.Command command = 4;
+
+		EndofQueue endOfQueue = 5;
+	}
+}

Source/dapi/GameData.h

@@ -0,0 +1,47 @@
+#pragma once
+
+#include <map>
+#include <vector>
+
+#include "Item.h"
+#include "Player.h"
+#include "Towner.h"
+#include "Trigger.h"
+
+namespace DAPI {
+enum struct StoreOption {
+	TALK,
+	IDENTIFYANITEM,
+	EXIT,
+	HEAL,
+	BUYITEMS,
+	WIRTPEEK,
+	BUYBASIC,
+	BUYPREMIUM,
+	SELL,
+	REPAIR,
+	RECHARGE,
+	BACK,
+	ACCESSSTORAGE
+};
+
+struct GameData {
+	bool menuOpen;
+	int pcurs;
+	bool chrflag;
+	bool invflag;
+	bool qtextflag;
+	int currlevel;
+	int stashGold;
+	size_t lastLogSize;
+
+	std::map<int, PlayerData> playerList;
+	std::vector<ItemData> itemList;
+	std::vector<int> groundItems;
+	std::vector<int> stashItems;
+	std::map<int, TownerData> townerList;
+	std::vector<StoreOption> storeList;
+	std::vector<int> storeItems;
+	std::vector<TriggerData> triggerList;
+};
+} // namespace DAPI

Source/dapi/Item.h

@@ -0,0 +1,71 @@
+#pragma once
+
+#include "../items.h"
+
+namespace DAPI {
+struct ItemData {
+	bool compare(devilution::Item &item)
+	{
+		return item._iSeed == _iSeed && item._iCreateInfo == _iCreateInfo && item.IDidx == IDidx;
+	}
+
+	int ID;
+
+	uint32_t _iSeed;
+	int _iCreateInfo;
+	int _itype;
+	int _ix;
+	int _iy;
+
+	uint32_t _iIdentified;
+	char _iMagical;
+	char _iName[64];
+	char _iIName[64];
+	char _iClass;
+	int _iCurs;
+	int _ivalue;
+	int _iMinDam;
+	int _iMaxDam;
+	int _iAC;
+	int _iFlags;
+	int _iMiscId;
+	int _iSpell;
+
+	int _iCharges;
+	int _iMaxCharges;
+
+	int _iDurability;
+	int _iMaxDur;
+
+	int _iPLDam;
+	int _iPLToHit;
+	int _iPLAC;
+	int _iPLStr;
+	int _iPLMag;
+	int _iPLDex;
+	int _iPLVit;
+	int _iPLFR;
+	int _iPLLR;
+	int _iPLMR;
+	int _iPLMana;
+	int _iPLHP;
+	int _iPLDamMod;
+	int _iPLGetHit;
+	int _iPLLight;
+	char _iSplLvlAdd;
+
+	int _iFMinDam;
+	int _iFMaxDam;
+	int _iLMinDam;
+	int _iLMaxDam;
+
+	char _iPrePower;
+	char _iSufPower;
+
+	char _iMinStr;
+	char _iMinMag;
+	char _iMinDex;
+	uint32_t _iStatFlag;
+	int IDidx;
+};
+} // namespace DAPI

Source/dapi/Player.h

@@ -0,0 +1,75 @@
+#pragma once
+#include "Item.h"
+#include <map>
+
+namespace DAPI {
+const int NUM_INVLOC = 7;
+const int MAXINV = 40;
+const int MAXSPD = 8;
+
+struct PlayerData {
+	int _pmode;
+	int pnum;
+	int plrlevel;
+	int _px;
+	int _py;
+	int _pfutx;
+	int _pfuty;
+	int _pdir;
+
+	int _pRSpell;
+	char _pRSplType;
+
+	char _pSplLvl[64];
+	uint64_t _pMemSpells;
+	uint64_t _pAblSpells;
+	uint64_t _pScrlSpells;
+
+	char _pName[32];
+	char _pClass;
+
+	int _pStrength;
+	int _pBaseStr;
+	int _pMagic;
+	int _pBaseMag;
+	int _pDexterity;
+	int _pBaseDex;
+	int _pVitality;
+	int _pBaseVit;
+
+	int _pStatPts;
+
+	int _pDamageMod;
+
+	int _pHitPoints;
+	int _pMaxHP;
+	int _pMana;
+	int _pMaxMana;
+	char _pLevel;
+	int _pExperience;
+
+	char _pArmorClass;
+
+	char _pMagResist;
+	char _pFireResist;
+	char _pLightResist;
+
+	int _pGold;
+
+	std::map<int, int> InvBody;
+	int InvList[MAXINV];
+	int InvGrid[MAXINV];
+	std::map<int, int> SpdList;
+	int HoldItem;
+
+	int _pIMinDam;
+	int _pIMaxDam;
+	int _pIBonusDam;
+	int _pIAC;
+	int _pIBonusToHit;
+	int _pIBonusAC;
+	int _pIBonusDamMod;
+	char _pISplLvlAdd;
+	bool pManaShield;
+};
+} // namespace DAPI

Source/dapi/Server.h

@@ -0,0 +1,361 @@
+#pragma once
+
+#include <fstream>
+#include <memory>
+#include <sstream>
+
+#include "Backend/DAPIBackendCore/DAPIProtoClient.h"
+#include "GameData.h"
+
+#include "control.h"
+#include "cursor.h"
+#include "diablo.h"
+#include "engine/random.hpp"
+#include "gamemenu.h"
+#include "gmenu.h"
+#include "inv.h"
+#include "levels/gendung.h"
+#include "minitext.h"
+#include "missiles.h"
+#include "msg.h"
+#include "multi.h"
+#include "objects.h"
+#include "player.h"
+#include "portal.h"
+#include "qol/chatlog.h"
+#include "spelldat.h"
+#include "stores.h"
+#include "towners.h"
+
+namespace DAPI {
+enum struct CommandType {
+	STAND,
+	WALKXY,
+	ACK_PLRINFO,
+	ADDSTR,
+	ADDMAG,
+	ADDDEX,
+	ADDVIT,
+	SBSPELL,
+	GETITEM,
+	AGETITEM,
+	PUTITEM,
+	RESPAWNITEM,
+	ATTACKXY,
+	RATTACKXY,
+	SPELLXY,
+	TSPELLXY,
+	OPOBJXY,
+	DISARMXY,
+	ATTACKID,
+	ATTACKPID,
+	RATTACKID,
+	RATTACKPID,
+	SPELLID,
+	SPELLPID,
+	TSPELLID,
+	TSPELLPID,
+	RESURRECT,
+	OPOBJT,
+	KNOCKBACK,
+	TALKXY,
+	NEWLVL,
+	WARP,
+	CHEAT_EXPERIENCE,
+	CHEAT_SPELL_LEVEL,
+	DEBUG,
+	SYNCDATA,
+	MONSTDEATH,
+	MONSTDAMAGE,
+	PLRDEAD,
+	REQUESTGITEM,
+	REQUESTAGITEM,
+	GOTOGETITEM,
+	GOTOAGETITEM,
+	OPENDOOR,
+	CLOSEDOOR,
+	OPERATEOBJ,
+	PLROPOBJ,
+	BREAKOBJ,
+	CHANGEPLRITEMS,
+	DELPLRITEMS,
+	PLRDAMAGE,
+	PLRLEVEL,
+	DROPITEM,
+	PLAYER_JOINLEVEL,
+	SEND_PLRINFO,
+	SATTACKXY,
+	ACTIVATEPORTAL,
+	DEACTIVATEPORTAL,
+	DLEVEL_0,
+	DLEVEL_1,
+	DLEVEL_2,
+	DLEVEL_3,
+	DLEVEL_4,
+	DLEVEL_5,
+	DLEVEL_6,
+	DLEVEL_7,
+	DLEVEL_8,
+	DLEVEL_9,
+	DLEVEL_10,
+	DLEVEL_11,
+	DLEVEL_12,
+	DLEVEL_13,
+	DLEVEL_14,
+	DLEVEL_15,
+	DLEVEL_16,
+	DLEVEL_JUNK,
+	DLEVEL_END,
+	HEALOTHER,
+	STRING,
+	SETSTR,
+	SETMAG,
+	SETDEX,
+	SETVIT,
+	RETOWN,
+	SPELLXYD,
+	ITEMEXTRA,
+	SYNCPUTITEM,
+	KILLGOLEM,
+	SYNCQUEST,
+	ENDSHIELD,
+	AWAKEGOLEM,
+	NOVA,
+	SETSHIELD,
+	REMSHIELD,
+	FAKE_SETID,
+	FAKE_DROPID,
+	TOGGLECHARACTER,
+	SETSPELL,
+	TOGGLEINVENTORY,
+	PUTINCURSOR,
+	PUTCURSORITEM,
+	IDENTIFYSTOREITEM,
+	NUM_CMDS,
+};
+
+enum struct EquipSlot {
+	HEAD = 0,
+	RIGHTRING = 1,
+	LEFTRING = 2,
+	AMULET = 3,
+	LEFTHAND = 4,
+	RIGHTHAND = 5,
+	BODY = 6,
+	INV1 = 7,
+	INV2 = 8,
+	INV3 = 9,
+	INV4 = 10,
+	INV5 = 11,
+	INV6 = 12,
+	INV7 = 13,
+	INV8 = 14,
+	INV9 = 15,
+	INV10 = 16,
+	INV11 = 17,
+	INV12 = 18,
+	INV13 = 19,
+	INV14 = 20,
+	INV15 = 21,
+	INV16 = 22,
+	INV17 = 23,
+	INV18 = 24,
+	INV19 = 25,
+	INV20 = 26,
+	INV21 = 27,
+	INV22 = 28,
+	INV23 = 29,
+	INV24 = 30,
+	INV25 = 31,
+	INV26 = 32,
+	INV27 = 33,
+	INV28 = 34,
+	INV29 = 35,
+	INV30 = 36,
+	INV31 = 37,
+	INV32 = 38,
+	INV33 = 39,
+	INV34 = 40,
+	INV35 = 41,
+	INV36 = 42,
+	INV37 = 43,
+	INV38 = 44,
+	INV39 = 45,
+	INV40 = 46,
+	BELT1 = 47,
+	BELT2 = 48,
+	BELT3 = 49,
+	BELT4 = 50,
+	BELT5 = 51,
+	BELT6 = 52,
+	BELT7 = 53,
+	BELT8 = 54,
+	STASH1 = 55,
+	STASH2 = 56,
+	STASH3 = 57,
+	STASH4 = 58,
+	STASH5 = 59,
+	STASH6 = 60,
+	STASH7 = 61,
+	STASH8 = 62,
+	STASH9 = 63,
+	STASH10 = 64,
+	STASH11 = 65,
+	STASH12 = 66,
+	STASH13 = 67,
+	STASH14 = 68,
+	STASH15 = 69,
+	STASH16 = 70,
+	STASH17 = 71,
+	STASH18 = 72,
+	STASH19 = 73,
+	STASH20 = 74,
+	STASH21 = 75,
+	STASH22 = 76,
+	STASH23 = 77,
+	STASH24 = 78,
+	STASH25 = 79,
+	STASH26 = 80,
+	STASH27 = 81,
+	STASH28 = 82,
+	STASH29 = 83,
+	STASH30 = 84,
+	STASH31 = 85,
+	STASH32 = 86,
+	STASH33 = 87,
+	STASH34 = 88,
+	STASH35 = 89,
+	STASH36 = 90,
+	STASH37 = 91,
+	STASH38 = 92,
+	STASH39 = 93,
+	STASH40 = 94,
+	STASH41 = 95,
+	STASH42 = 96,
+	STASH43 = 97,
+	STASH44 = 98,
+	STASH45 = 99,
+	STASH46 = 100,
+	STASH47 = 101,
+	STASH48 = 102,
+	STASH49 = 103,
+	STASH50 = 104,
+	STASH51 = 105,
+	STASH52 = 106,
+	STASH53 = 107,
+	STASH54 = 108,
+	STASH55 = 109,
+	STASH56 = 110,
+	STASH57 = 111,
+	STASH58 = 112,
+	STASH59 = 113,
+	STASH60 = 114,
+	STASH61 = 115,
+	STASH62 = 116,
+	STASH63 = 117,
+	STASH64 = 118,
+	STASH65 = 119,
+	STASH66 = 120,
+	STASH67 = 121,
+	STASH68 = 122,
+	STASH69 = 123,
+	STASH70 = 124,
+	STASH71 = 125,
+	STASH72 = 126,
+	STASH73 = 127,
+	STASH74 = 128,
+	STASH75 = 129,
+	STASH76 = 130,
+	STASH77 = 131,
+	STASH78 = 132,
+	STASH79 = 133,
+	STASH80 = 134,
+	STASH81 = 135,
+	STASH82 = 136,
+	STASH83 = 137,
+	STASH84 = 138,
+	STASH85 = 139,
+	STASH86 = 140,
+	STASH87 = 141,
+	STASH88 = 142,
+	STASH89 = 143,
+	STASH90 = 144,
+	STASH91 = 145,
+	STASH92 = 146,
+	STASH93 = 147,
+	STASH94 = 148,
+	STASH95 = 149,
+	STASH96 = 150,
+	STASH97 = 151,
+	STASH98 = 152,
+	STASH99 = 153,
+	STASH100 = 154
+};
+
+enum struct Backend {
+	Vanilla109,
+	DevilutionX
+};
+
+struct Server {
+	Server();
+
+	Server(const Server &other) = delete;
+	Server(Server &&other) = delete;
+
+	void update();
+	bool isConnected() const;
+
+	int FPS;
+	std::ofstream output;
+
+private:
+	void processMessages();
+	void checkForConnections();
+	void updateGameData();
+	bool isOnScreen(int x, int y);
+	bool OKToAct();
+	void move(int x, int y);
+	void talk(int x, int y);
+	void selectStoreOption(StoreOption option);
+	void buyItem(int itemID);
+	void sellItem(int itemID);
+	void rechargeItem(int itemID);
+	void repairItem(int itemID);
+	void attackMonster(int index);
+	void attackXY(int x, int y);
+	void operateObject(int index);
+	void useBeltItem(int slot);
+	void toggleCharacterScreen();
+	void increaseStat(CommandType commandType);
+	void getItem(int itemID);
+	void setSpell(int spellID, devilution::SpellType spellType);
+	void castSpell(int index);
+	void toggleInventory();
+	void putInCursor(size_t itemID);
+	void putCursorItem(int location);
+	void dropCursorItem();
+	void useItem(size_t itemID);
+	void identifyStoreItem(int itemID);
+	void castSpell(int x, int y);
+	void cancelQText();
+	void setFPS(int newFPS);
+	void disarmTrap(int index);
+	void skillRepair(int itemID);
+	void skillRecharge(int itemID);
+	void toggleMenu();
+	void saveGame();
+	void quit();
+	void clearCursor();
+	void identifyItem(int itemID);
+	void sendChat(std::string message);
+
+	bool listening = false;
+
+	std::unique_ptr<GameData> data;
+
+	std::map<std::pair<int, int>, bool> panelScreenCheck;
+
+	DAPIProtoClient protoClient;
+};
+} // namespace DAPI

Source/dapi/Towner.h

@@ -0,0 +1,14 @@
+#pragma once
+
+#include "../towners.h"
+
+namespace DAPI {
+
+struct TownerData {
+	int ID;
+	devilution::_talker_id _ttype;
+	int _tx;
+	int _ty;
+	char _tName[32];
+};
+} // namespace DAPI

Source/dapi/Trigger.h

@@ -0,0 +1,14 @@
+#pragma once
+#include "../levels/trigs.h"
+
+namespace DAPI {
+struct TriggerData {
+	bool compare(devilution::TriggerStruct &other) { return (other._tlvl == lvl && other._tmsg == type && other.position.x == x && other.position.y == y); }
+
+	int ID;
+	int x;
+	int y;
+	int lvl;
+	int type;
+};
+} // namespace DAPI

Source/diablo.cpp

@@ -122,6 +122,10 @@
 #include "controls/touch/renderers.h"
 #endif
 
+#ifdef DAPI_SERVER
+#include "dapi/Server.h"
+#endif
+
 #ifdef __vita__
 #include "platform/vita/touch.h"
 #endif
@@ -146,6 +150,10 @@ clicktype sgbMouseDown;
 uint16_t gnTickDelay = 50;
 char gszProductName[64] = "DevilutionX vUnknown";
 
+#ifdef DAPI_SERVER
+DAPI::Server dapiServer;
+#endif
+
 #ifdef _DEBUG
 bool DebugDisableNetworkTimeout = false;
 std::vector<std::string> DebugCmdsFromCommandLine;
@@ -313,23 +321,6 @@ void LeftMouseCmd(bool bShift)
 	}
 }
 
-bool TryOpenDungeonWithMouse()
-{
-	if (leveltype != DTYPE_TOWN)
-		return false;
-
-	const Item &holdItem = MyPlayer->HoldItem;
-	if (holdItem.IDidx == IDI_RUNEBOMB && OpensHive(cursPosition))
-		OpenHive();
-	else if (holdItem.IDidx == IDI_MAPOFDOOM && OpensGrave(cursPosition))
-		OpenGrave();
-	else
-		return false;
-
-	NewCursor(CURSOR_HAND);
-	return true;
-}
-
 void LeftMouseDown(uint16_t modState)
 {
 	LastPlayerAction = PlayerActionType::None;
@@ -1511,8 +1502,15 @@ void UpdateMonsterLights()
 void GameLogic()
 {
 	if (!ProcessInput()) {
+#ifdef DAPI_SERVER
+		if (gmenu_is_active())
+			dapiServer.update(); // For game menu commands
+#endif
 		return;
 	}
+#ifdef DAPI_SERVER
+	dapiServer.update();
+#endif
 	if (gbProcessPlayers) {
 		gGameLogicStep = GameLogicStep::ProcessPlayers;
 		ProcessPlayers();
@@ -3495,4 +3493,21 @@ void PrintScreen(SDL_Keycode vkey)
 	ReleaseKey(vkey);
 }
 
+bool TryOpenDungeonWithMouse()
+{
+	if (leveltype != DTYPE_TOWN)
+		return false;
+
+	const Item &holdItem = MyPlayer->HoldItem;
+	if (holdItem.IDidx == IDI_RUNEBOMB && OpensHive(cursPosition))
+		OpenHive();
+	else if (holdItem.IDidx == IDI_MAPOFDOOM && OpensGrave(cursPosition))
+		OpenGrave();
+	else
+		return false;
+
+	NewCursor(CURSOR_HAND);
+	return true;
+}
+
 } // namespace devilution

Source/diablo.h

@@ -102,6 +102,7 @@ void DisableInputEventHandler(const SDL_Event &event, uint16_t modState);
 tl::expected<void, std::string> LoadGameLevel(bool firstflag, lvl_entry lvldir);
 bool IsDiabloAlive(bool playSFX);
 void PrintScreen(SDL_Keycode vkey);
+bool TryOpenDungeonWithMouse();
 
 /**
  * @param bStartup Process additional ticks before returning

Source/inv.cpp

@@ -558,68 +558,6 @@ item_equip_type GetItemEquipType(const Player &player, int slot, item_equip_type
 	return ILOC_UNEQUIPABLE;
 }
 
-void CheckInvPaste(Player &player, Point cursorPosition)
-{
-	const Size itemSize = GetInventorySize(player.HoldItem);
-
-	const int slot = FindTargetSlotUnderItemCursor(cursorPosition, itemSize);
-	if (slot == NUM_XY_SLOTS)
-		return;
-
-	const item_equip_type desiredLocation = player.GetItemLocation(player.HoldItem);
-	const item_equip_type location = GetItemEquipType(player, slot, desiredLocation);
-
-	if (location == ILOC_BELT) {
-		if (!CanBePlacedOnBelt(player, player.HoldItem)) return;
-	} else if (location != ILOC_UNEQUIPABLE) {
-		if (desiredLocation != location) return;
-	}
-
-	if (IsNoneOf(location, ILOC_UNEQUIPABLE, ILOC_BELT)) {
-		if (!player.CanUseItem(player.HoldItem)) {
-			player.Say(HeroSpeech::ICantUseThisYet);
-			return;
-		}
-		if (player._pmode > PM_WALK_SIDEWAYS)
-			return;
-	}
-
-	if (&player == MyPlayer) {
-		PlaySFX(ItemInvSnds[ItemCAnimTbl[player.HoldItem._iCurs]]);
-	}
-
-	// Select the parameters that go into
-	// ChangeEquipment and add it to post switch
-	switch (location) {
-	case ILOC_HELM:
-	case ILOC_RING:
-	case ILOC_AMULET:
-	case ILOC_ARMOR:
-		ChangeBodyEquipment(player, slot, location);
-		break;
-	case ILOC_ONEHAND:
-		ChangeEquippedItem(player, slot);
-		break;
-	case ILOC_TWOHAND:
-		ChangeTwoHandItem(player);
-		break;
-	case ILOC_UNEQUIPABLE:
-		if (!ChangeInvItem(player, slot, itemSize)) return;
-		break;
-	case ILOC_BELT:
-		ChangeBeltItem(player, slot);
-		break;
-	case ILOC_NONE:
-	case ILOC_INVALID:
-		break;
-	}
-
-	CalcPlrInv(player, true);
-	if (&player == MyPlayer) {
-		NewCursor(player.HoldItem);
-	}
-}
-
 inv_body_loc MapSlotToInvBodyLoc(inv_xy_slot slot)
 {
 	assert(slot <= SLOTXY_CHEST);
@@ -746,283 +684,74 @@ bool CouldFitItemInInventory(const Player &player, const Item &item, int itemInd
 	return static_cast<bool>(FindSlotForItem(player, GetInventorySize(item), itemIndexToIgnore));
 }
 
-void CheckInvCut(Player &player, Point cursorPosition, bool automaticMove, bool dropItem)
+void TryCombineNaKrulNotes(Player &player, Item &noteItem)
 {
-	if (player._pmode > PM_WALK_SIDEWAYS) {
+	const int idx = noteItem.IDidx;
+	const _item_indexes notes[] = { IDI_NOTE1, IDI_NOTE2, IDI_NOTE3 };
+
+	if (IsNoneOf(idx, IDI_NOTE1, IDI_NOTE2, IDI_NOTE3)) {
 		return;
 	}
 
-	CloseGoldDrop();
+	for (const _item_indexes note : notes) {
+		if (idx != note && !HasInventoryItemWithId(player, note)) {
+			return; // the player doesn't have all notes
+		}
+	}
 
-	std::optional<inv_xy_slot> maybeSlot = FindSlotUnderCursor(cursorPosition);
+	MyPlayer->Say(HeroSpeech::JustWhatIWasLookingFor, 10);
 
-	if (!maybeSlot) {
-		// not on an inventory slot rectangle
-		return;
+	for (const _item_indexes note : notes) {
+		if (idx != note) {
+			RemoveInventoryItemById(player, note);
+		}
 	}
 
-	const inv_xy_slot r = *maybeSlot;
+	const Point position = noteItem.position; // copy the position to restore it after re-initialising the item
+	noteItem = {};
+	GetItemAttrs(noteItem, IDI_FULLNOTE, 16);
+	SetupItem(noteItem);
+	noteItem.position = position; // this ensures CleanupItem removes the entry in the dropped items lookup table
+}
 
-	Item &holdItem = player.HoldItem;
-	holdItem.clear();
+void CheckQuestItem(Player &player, Item &questItem)
+{
+	const Player &myPlayer = *MyPlayer;
 
-	bool attemptedMove = false;
-	bool automaticallyMoved = false;
-	SfxID successSound = SfxID::None;
-	HeroSpeech failedSpeech = HeroSpeech::ICantDoThat; // Default message if the player attempts to automove an item that can't go anywhere else
+	if (Quests[Q_BLIND]._qactive == QUEST_ACTIVE
+	    && (questItem.IDidx == IDI_OPTAMULET
+	        || (Quests[Q_BLIND].IsAvailable() && questItem.position == (SetPiece.position.megaToWorld() + Displacement { 5, 5 })))) {
+		Quests[Q_BLIND]._qactive = QUEST_DONE;
+		NetSendCmdQuest(true, Quests[Q_BLIND]);
+	}
 
-	if (r >= SLOTXY_HEAD && r <= SLOTXY_CHEST) {
-		const inv_body_loc invloc = MapSlotToInvBodyLoc(r);
-		if (!player.InvBody[invloc].isEmpty()) {
-			if (automaticMove) {
-				attemptedMove = true;
-				automaticallyMoved = AutoPlaceItemInInventory(player, player.InvBody[invloc]);
-				if (automaticallyMoved) {
-					successSound = ItemInvSnds[ItemCAnimTbl[player.InvBody[invloc]._iCurs]];
-					RemoveEquipment(player, invloc, false);
-				} else {
-					failedSpeech = HeroSpeech::IHaveNoRoom;
-				}
-			} else {
-				holdItem = player.InvBody[invloc];
-				RemoveEquipment(player, invloc, false);
-			}
-		}
+	if (questItem.IDidx == IDI_MUSHROOM && Quests[Q_MUSHROOM]._qactive == QUEST_ACTIVE && Quests[Q_MUSHROOM]._qvar1 == QS_MUSHSPAWNED) {
+		player.Say(HeroSpeech::NowThatsOneBigMushroom, 10); // BUGFIX: Voice for this quest might be wrong in MP
+		Quests[Q_MUSHROOM]._qvar1 = QS_MUSHPICKED;
+		NetSendCmdQuest(true, Quests[Q_MUSHROOM]);
 	}
 
-	if (r >= SLOTXY_INV_FIRST && r <= SLOTXY_INV_LAST) {
-		const unsigned ig = r - SLOTXY_INV_FIRST;
-		const int iv = std::abs(player.InvGrid[ig]) - 1;
-		if (iv >= 0) {
-			if (automaticMove) {
-				attemptedMove = true;
-				if (CanBePlacedOnBelt(player, player.InvList[iv])) {
-					automaticallyMoved = AutoPlaceItemInBelt(player, player.InvList[iv], true, &player == MyPlayer);
-					if (automaticallyMoved) {
-						successSound = SfxID::GrabItem;
-						player.RemoveInvItem(iv, false);
-					} else {
-						failedSpeech = HeroSpeech::IHaveNoRoom;
-					}
-				} else if (CanEquip(player.InvList[iv])) {
-					failedSpeech = HeroSpeech::IHaveNoRoom; // Default to saying "I have no room" if auto-equip fails
+	if (questItem.IDidx == IDI_ANVIL && Quests[Q_ANVIL]._qactive != QUEST_NOTAVAIL) {
+		if (Quests[Q_ANVIL]._qactive == QUEST_INIT) {
+			Quests[Q_ANVIL]._qactive = QUEST_ACTIVE;
+			NetSendCmdQuest(true, Quests[Q_ANVIL]);
+		}
+		if (Quests[Q_ANVIL]._qlog) {
+			myPlayer.Say(HeroSpeech::INeedToGetThisToGriswold, 10);
+		}
+	}
 
-					/*
-					 * If the player shift-clicks an item in the inventory we want to swap it with whatever item may be
-					 * equipped in the target slot. Lifting the item to the hand unconditionally would be ideal, except
-					 * we don't want to leave the item on the hand if the equip attempt failed. We would end up
-					 * generating wasteful network messages if we did the lift first. Instead we work out whatever slot
-					 * needs to be unequipped (if any):
-					 */
-					int invloc = NUM_INVLOC;
-					switch (player.GetItemLocation(player.InvList[iv])) {
-					case ILOC_ARMOR:
-						invloc = INVLOC_CHEST;
-						break;
-					case ILOC_HELM:
-						invloc = INVLOC_HEAD;
-						break;
-					case ILOC_AMULET:
-						invloc = INVLOC_AMULET;
-						break;
-					case ILOC_ONEHAND:
-						if (!player.InvBody[INVLOC_HAND_LEFT].isEmpty()
-						    && (player.InvList[iv]._iClass == player.InvBody[INVLOC_HAND_LEFT]._iClass
-						        || player.GetItemLocation(player.InvBody[INVLOC_HAND_LEFT]) == ILOC_TWOHAND)) {
-							// The left hand is not empty and we're either trying to equip the same type of item or
-							// it's holding a two handed weapon, so it must be unequipped
-							invloc = INVLOC_HAND_LEFT;
-						} else if (!player.InvBody[INVLOC_HAND_RIGHT].isEmpty() && player.InvList[iv]._iClass == player.InvBody[INVLOC_HAND_RIGHT]._iClass) {
-							// The right hand is not empty and we're trying to equip the same type of item, so we need
-							// to unequip that item
-							invloc = INVLOC_HAND_RIGHT;
-						}
-						// otherwise one hand is empty (and we can let the auto-equip code put the target item into
-						// that hand) or we're playing a bard with two swords equipped and we're trying to auto-equip
-						// a shield (in which case the attempt will fail).
-						break;
-					case ILOC_TWOHAND:
-						// Moving a two-hand item from inventory to InvBody requires emptying both hands.
-						if (player.InvBody[INVLOC_HAND_RIGHT].isEmpty()) {
-							// If the right hand is empty then we can simply try equipping this item in the left hand,
-							// we'll let the common code take care of unequipping anything held there.
-							invloc = INVLOC_HAND_LEFT;
-						} else if (player.InvBody[INVLOC_HAND_LEFT].isEmpty()) {
-							// We have an item in the right hand but nothing in the left, so let the common code
-							// take care of unequipping whatever is held in the right hand. The auto-equip code
-							// picks the most appropriate location for the item type (which in this case will be
-							// the left hand), invloc isn't used there.
-							invloc = INVLOC_HAND_RIGHT;
-						} else {
-							// Both hands are holding items, we must unequip one of the items and check that there's
-							// space for the other before trying to auto-equip
-							inv_body_loc mainHand = INVLOC_HAND_LEFT;
-							inv_body_loc offHand = INVLOC_HAND_RIGHT;
-							if (!AutoPlaceItemInInventory(player, player.InvBody[offHand])) {
-								// No space to move right hand item to inventory, can we move the left instead?
-								std::swap(mainHand, offHand);
-								if (!AutoPlaceItemInInventory(player, player.InvBody[offHand])) {
-									break;
-								}
-							}
-							if (!CouldFitItemInInventory(player, player.InvBody[mainHand], iv)) {
-								// No space for the main hand item. Move the other item back to the off hand and abort.
-								player.InvBody[offHand] = player.InvList[player._pNumInv - 1];
-								player.RemoveInvItem(player._pNumInv - 1, false);
-								break;
-							}
-							RemoveEquipment(player, offHand, false);
-							invloc = mainHand;
-						}
-						break;
-					default:
-						// If the player is trying to equip a ring we want to say "I can't do that" if they don't already have a ring slot free.
-						failedSpeech = HeroSpeech::ICantDoThat;
-						break;
-					}
-					// Then empty the identified InvBody slot (invloc) and hand over to AutoEquip
-					if (invloc != NUM_INVLOC
-					    && !player.InvBody[invloc].isEmpty()
-					    && CouldFitItemInInventory(player, player.InvBody[invloc], iv)) {
-						holdItem = player.InvBody[invloc].pop();
-					}
-					automaticallyMoved = AutoEquip(player, player.InvList[iv], true, &player == MyPlayer);
-					if (automaticallyMoved) {
-						successSound = ItemInvSnds[ItemCAnimTbl[player.InvList[iv]._iCurs]];
-						player.RemoveInvItem(iv, false);
+	if (questItem.IDidx == IDI_GLDNELIX && Quests[Q_VEIL]._qactive != QUEST_NOTAVAIL) {
+		myPlayer.Say(HeroSpeech::INeedToGetThisToLachdanan, 30);
+	}
 
-						// If we're holding an item at this point we just lifted it from a body slot to make room for the original item, so we need to put it into the inv
-						if (!holdItem.isEmpty() && AutoPlaceItemInInventory(player, holdItem)) {
-							holdItem.clear();
-						} // there should never be a situation where holdItem is not empty but we fail to place it into the inventory given the checks earlier... leave it on the hand in this case.
-					} else if (!holdItem.isEmpty()) {
-						// We somehow failed to equip the item in the slot we already checked should hold it? Better put this item back...
-						player.InvBody[invloc] = holdItem.pop();
-					}
-				}
-			} else {
-				holdItem = player.InvList[iv];
-				player.RemoveInvItem(iv, false);
-			}
-		}
-	}
-
-	if (r >= SLOTXY_BELT_FIRST) {
-		const Item &beltItem = player.SpdList[r - SLOTXY_BELT_FIRST];
-		if (!beltItem.isEmpty()) {
-			if (automaticMove) {
-				attemptedMove = true;
-				automaticallyMoved = AutoPlaceItemInInventory(player, beltItem);
-				if (automaticallyMoved) {
-					successSound = SfxID::GrabItem;
-					player.RemoveSpdBarItem(r - SLOTXY_BELT_FIRST);
-				} else {
-					failedSpeech = HeroSpeech::IHaveNoRoom;
-				}
-			} else {
-				holdItem = beltItem;
-				player.RemoveSpdBarItem(r - SLOTXY_BELT_FIRST);
-			}
-		}
-	}
-
-	if (!holdItem.isEmpty()) {
-		if (holdItem._itype == ItemType::Gold) {
-			player._pGold = CalculateGold(player);
-		}
-
-		CalcPlrInv(player, true);
-		holdItem._iStatFlag = player.CanUseItem(holdItem);
-
-		if (&player == MyPlayer) {
-			PlaySFX(SfxID::GrabItem);
-			NewCursor(holdItem);
-		}
-		if (dropItem) {
-			TryDropItem();
-		}
-	} else if (automaticMove) {
-		if (automaticallyMoved) {
-			CalcPlrInv(player, true);
-		}
-		if (attemptedMove && &player == MyPlayer) {
-			if (automaticallyMoved) {
-				PlaySFX(successSound);
-			} else {
-				player.SaySpecific(failedSpeech);
-			}
-		}
-	}
-}
-
-void TryCombineNaKrulNotes(Player &player, Item &noteItem)
-{
-	const int idx = noteItem.IDidx;
-	const _item_indexes notes[] = { IDI_NOTE1, IDI_NOTE2, IDI_NOTE3 };
-
-	if (IsNoneOf(idx, IDI_NOTE1, IDI_NOTE2, IDI_NOTE3)) {
-		return;
-	}
-
-	for (const _item_indexes note : notes) {
-		if (idx != note && !HasInventoryItemWithId(player, note)) {
-			return; // the player doesn't have all notes
-		}
-	}
-
-	MyPlayer->Say(HeroSpeech::JustWhatIWasLookingFor, 10);
-
-	for (const _item_indexes note : notes) {
-		if (idx != note) {
-			RemoveInventoryItemById(player, note);
-		}
-	}
-
-	const Point position = noteItem.position; // copy the position to restore it after re-initialising the item
-	noteItem = {};
-	GetItemAttrs(noteItem, IDI_FULLNOTE, 16);
-	SetupItem(noteItem);
-	noteItem.position = position; // this ensures CleanupItem removes the entry in the dropped items lookup table
-}
-
-void CheckQuestItem(Player &player, Item &questItem)
-{
-	const Player &myPlayer = *MyPlayer;
-
-	if (Quests[Q_BLIND]._qactive == QUEST_ACTIVE
-	    && (questItem.IDidx == IDI_OPTAMULET
-	        || (Quests[Q_BLIND].IsAvailable() && questItem.position == (SetPiece.position.megaToWorld() + Displacement { 5, 5 })))) {
-		Quests[Q_BLIND]._qactive = QUEST_DONE;
-		NetSendCmdQuest(true, Quests[Q_BLIND]);
-	}
-
-	if (questItem.IDidx == IDI_MUSHROOM && Quests[Q_MUSHROOM]._qactive == QUEST_ACTIVE && Quests[Q_MUSHROOM]._qvar1 == QS_MUSHSPAWNED) {
-		player.Say(HeroSpeech::NowThatsOneBigMushroom, 10); // BUGFIX: Voice for this quest might be wrong in MP
-		Quests[Q_MUSHROOM]._qvar1 = QS_MUSHPICKED;
-		NetSendCmdQuest(true, Quests[Q_MUSHROOM]);
-	}
-
-	if (questItem.IDidx == IDI_ANVIL && Quests[Q_ANVIL]._qactive != QUEST_NOTAVAIL) {
-		if (Quests[Q_ANVIL]._qactive == QUEST_INIT) {
-			Quests[Q_ANVIL]._qactive = QUEST_ACTIVE;
-			NetSendCmdQuest(true, Quests[Q_ANVIL]);
-		}
-		if (Quests[Q_ANVIL]._qlog) {
-			myPlayer.Say(HeroSpeech::INeedToGetThisToGriswold, 10);
-		}
-	}
-
-	if (questItem.IDidx == IDI_GLDNELIX && Quests[Q_VEIL]._qactive != QUEST_NOTAVAIL) {
-		myPlayer.Say(HeroSpeech::INeedToGetThisToLachdanan, 30);
-	}
-
-	if (questItem.IDidx == IDI_ROCK && Quests[Q_ROCK]._qactive != QUEST_NOTAVAIL) {
-		if (Quests[Q_ROCK]._qactive == QUEST_INIT) {
-			Quests[Q_ROCK]._qactive = QUEST_ACTIVE;
-			NetSendCmdQuest(true, Quests[Q_ROCK]);
-		}
-		if (Quests[Q_ROCK]._qlog) {
-			myPlayer.Say(HeroSpeech::ThisMustBeWhatGriswoldWanted, 10);
+	if (questItem.IDidx == IDI_ROCK && Quests[Q_ROCK]._qactive != QUEST_NOTAVAIL) {
+		if (Quests[Q_ROCK]._qactive == QUEST_INIT) {
+			Quests[Q_ROCK]._qactive = QUEST_ACTIVE;
+			NetSendCmdQuest(true, Quests[Q_ROCK]);
+		}
+		if (Quests[Q_ROCK]._qlog) {
+			myPlayer.Say(HeroSpeech::ThisMustBeWhatGriswoldWanted, 10);
 		}
 	}
 
@@ -2276,4 +2005,275 @@ Size GetInventorySize(const Item &item)
 	return { size.width / InventorySlotSizeInPixels.width, size.height / InventorySlotSizeInPixels.height };
 }
 
+void CheckInvCut(Player &player, Point cursorPosition, bool automaticMove, bool dropItem)
+{
+	if (player._pmode > PM_WALK_SIDEWAYS) {
+		return;
+	}
+
+	CloseGoldDrop();
+
+	std::optional<inv_xy_slot> maybeSlot = FindSlotUnderCursor(cursorPosition);
+
+	if (!maybeSlot) {
+		// not on an inventory slot rectangle
+		return;
+	}
+
+	inv_xy_slot r = *maybeSlot;
+
+	Item &holdItem = player.HoldItem;
+	holdItem.clear();
+
+	bool attemptedMove = false;
+	bool automaticallyMoved = false;
+	SfxID successSound = SfxID::None;
+	HeroSpeech failedSpeech = HeroSpeech::ICantDoThat; // Default message if the player attempts to automove an item that can't go anywhere else
+
+	if (r >= SLOTXY_HEAD && r <= SLOTXY_CHEST) {
+		inv_body_loc invloc = MapSlotToInvBodyLoc(r);
+		if (!player.InvBody[invloc].isEmpty()) {
+			if (automaticMove) {
+				attemptedMove = true;
+				automaticallyMoved = AutoPlaceItemInInventory(player, player.InvBody[invloc]);
+				if (automaticallyMoved) {
+					successSound = ItemInvSnds[ItemCAnimTbl[player.InvBody[invloc]._iCurs]];
+					RemoveEquipment(player, invloc, false);
+				} else {
+					failedSpeech = HeroSpeech::IHaveNoRoom;
+				}
+			} else {
+				holdItem = player.InvBody[invloc];
+				RemoveEquipment(player, invloc, false);
+			}
+		}
+	}
+
+	if (r >= SLOTXY_INV_FIRST && r <= SLOTXY_INV_LAST) {
+		unsigned ig = r - SLOTXY_INV_FIRST;
+		int iv = std::abs(player.InvGrid[ig]) - 1;
+		if (iv >= 0) {
+			if (automaticMove) {
+				attemptedMove = true;
+				if (CanBePlacedOnBelt(player, player.InvList[iv])) {
+					automaticallyMoved = AutoPlaceItemInBelt(player, player.InvList[iv], true, &player == MyPlayer);
+					if (automaticallyMoved) {
+						successSound = SfxID::GrabItem;
+						player.RemoveInvItem(iv, false);
+					} else {
+						failedSpeech = HeroSpeech::IHaveNoRoom;
+					}
+				} else if (CanEquip(player.InvList[iv])) {
+					failedSpeech = HeroSpeech::IHaveNoRoom; // Default to saying "I have no room" if auto-equip fails
+
+					/*
+					 * If the player shift-clicks an item in the inventory we want to swap it with whatever item may be
+					 * equipped in the target slot. Lifting the item to the hand unconditionally would be ideal, except
+					 * we don't want to leave the item on the hand if the equip attempt failed. We would end up
+					 * generating wasteful network messages if we did the lift first. Instead we work out whatever slot
+					 * needs to be unequipped (if any):
+					 */
+					int invloc = NUM_INVLOC;
+					switch (player.GetItemLocation(player.InvList[iv])) {
+					case ILOC_ARMOR:
+						invloc = INVLOC_CHEST;
+						break;
+					case ILOC_HELM:
+						invloc = INVLOC_HEAD;
+						break;
+					case ILOC_AMULET:
+						invloc = INVLOC_AMULET;
+						break;
+					case ILOC_ONEHAND:
+						if (!player.InvBody[INVLOC_HAND_LEFT].isEmpty()
+						    && (player.InvList[iv]._iClass == player.InvBody[INVLOC_HAND_LEFT]._iClass
+						        || player.GetItemLocation(player.InvBody[INVLOC_HAND_LEFT]) == ILOC_TWOHAND)) {
+							// The left hand is not empty and we're either trying to equip the same type of item or
+							// it's holding a two handed weapon, so it must be unequipped
+							invloc = INVLOC_HAND_LEFT;
+						} else if (!player.InvBody[INVLOC_HAND_RIGHT].isEmpty() && player.InvList[iv]._iClass == player.InvBody[INVLOC_HAND_RIGHT]._iClass) {
+							// The right hand is not empty and we're trying to equip the same type of item, so we need
+							// to unequip that item
+							invloc = INVLOC_HAND_RIGHT;
+						}
+						// otherwise one hand is empty (and we can let the auto-equip code put the target item into
+						// that hand) or we're playing a bard with two swords equipped and we're trying to auto-equip
+						// a shield (in which case the attempt will fail).
+						break;
+					case ILOC_TWOHAND:
+						// Moving a two-hand item from inventory to InvBody requires emptying both hands.
+						if (player.InvBody[INVLOC_HAND_RIGHT].isEmpty()) {
+							// If the right hand is empty then we can simply try equipping this item in the left hand,
+							// we'll let the common code take care of unequipping anything held there.
+							invloc = INVLOC_HAND_LEFT;
+						} else if (player.InvBody[INVLOC_HAND_LEFT].isEmpty()) {
+							// We have an item in the right hand but nothing in the left, so let the common code
+							// take care of unequipping whatever is held in the right hand. The auto-equip code
+							// picks the most appropriate location for the item type (which in this case will be
+							// the left hand), invloc isn't used there.
+							invloc = INVLOC_HAND_RIGHT;
+						} else {
+							// Both hands are holding items, we must unequip one of the items and check that there's
+							// space for the other before trying to auto-equip
+							inv_body_loc mainHand = INVLOC_HAND_LEFT;
+							inv_body_loc offHand = INVLOC_HAND_RIGHT;
+							if (!AutoPlaceItemInInventory(player, player.InvBody[offHand])) {
+								// No space to move right hand item to inventory, can we move the left instead?
+								std::swap(mainHand, offHand);
+								if (!AutoPlaceItemInInventory(player, player.InvBody[offHand])) {
+									break;
+								}
+							}
+							if (!CouldFitItemInInventory(player, player.InvBody[mainHand], iv)) {
+								// No space for the main hand item. Move the other item back to the off hand and abort.
+								player.InvBody[offHand] = player.InvList[player._pNumInv - 1];
+								player.RemoveInvItem(player._pNumInv - 1, false);
+								break;
+							}
+							RemoveEquipment(player, offHand, false);
+							invloc = mainHand;
+						}
+						break;
+					default:
+						// If the player is trying to equip a ring we want to say "I can't do that" if they don't already have a ring slot free.
+						failedSpeech = HeroSpeech::ICantDoThat;
+						break;
+					}
+					// Then empty the identified InvBody slot (invloc) and hand over to AutoEquip
+					if (invloc != NUM_INVLOC
+					    && !player.InvBody[invloc].isEmpty()
+					    && CouldFitItemInInventory(player, player.InvBody[invloc], iv)) {
+						holdItem = player.InvBody[invloc].pop();
+					}
+					automaticallyMoved = AutoEquip(player, player.InvList[iv], true, &player == MyPlayer);
+					if (automaticallyMoved) {
+						successSound = ItemInvSnds[ItemCAnimTbl[player.InvList[iv]._iCurs]];
+						player.RemoveInvItem(iv, false);
+
+						// If we're holding an item at this point we just lifted it from a body slot to make room for the original item, so we need to put it into the inv
+						if (!holdItem.isEmpty() && AutoPlaceItemInInventory(player, holdItem)) {
+							holdItem.clear();
+						} // there should never be a situation where holdItem is not empty but we fail to place it into the inventory given the checks earlier... leave it on the hand in this case.
+					} else if (!holdItem.isEmpty()) {
+						// We somehow failed to equip the item in the slot we already checked should hold it? Better put this item back...
+						player.InvBody[invloc] = holdItem.pop();
+					}
+				}
+			} else {
+				holdItem = player.InvList[iv];
+				player.RemoveInvItem(iv, false);
+			}
+		}
+	}
+
+	if (r >= SLOTXY_BELT_FIRST) {
+		Item &beltItem = player.SpdList[r - SLOTXY_BELT_FIRST];
+		if (!beltItem.isEmpty()) {
+			if (automaticMove) {
+				attemptedMove = true;
+				automaticallyMoved = AutoPlaceItemInInventory(player, beltItem);
+				if (automaticallyMoved) {
+					successSound = SfxID::GrabItem;
+					player.RemoveSpdBarItem(r - SLOTXY_BELT_FIRST);
+				} else {
+					failedSpeech = HeroSpeech::IHaveNoRoom;
+				}
+			} else {
+				holdItem = beltItem;
+				player.RemoveSpdBarItem(r - SLOTXY_BELT_FIRST);
+			}
+		}
+	}
+
+	if (!holdItem.isEmpty()) {
+		if (holdItem._itype == ItemType::Gold) {
+			player._pGold = CalculateGold(player);
+		}
+
+		CalcPlrInv(player, true);
+		holdItem._iStatFlag = player.CanUseItem(holdItem);
+
+		if (&player == MyPlayer) {
+			PlaySFX(SfxID::GrabItem);
+			NewCursor(holdItem);
+		}
+		if (dropItem) {
+			TryDropItem();
+		}
+	} else if (automaticMove) {
+		if (automaticallyMoved) {
+			CalcPlrInv(player, true);
+		}
+		if (attemptedMove && &player == MyPlayer) {
+			if (automaticallyMoved) {
+				PlaySFX(successSound);
+			} else {
+				player.SaySpecific(failedSpeech);
+			}
+		}
+	}
+}
+
+void CheckInvPaste(Player &player, Point cursorPosition)
+{
+	const Size itemSize = GetInventorySize(player.HoldItem);
+
+	const int slot = FindTargetSlotUnderItemCursor(cursorPosition, itemSize);
+	if (slot == NUM_XY_SLOTS)
+		return;
+
+	const item_equip_type desiredLocation = player.GetItemLocation(player.HoldItem);
+	const item_equip_type location = GetItemEquipType(player, slot, desiredLocation);
+
+	if (location == ILOC_BELT) {
+		if (!CanBePlacedOnBelt(player, player.HoldItem)) return;
+	} else if (location != ILOC_UNEQUIPABLE) {
+		if (desiredLocation != location) return;
+	}
+
+	if (IsNoneOf(location, ILOC_UNEQUIPABLE, ILOC_BELT)) {
+		if (!player.CanUseItem(player.HoldItem)) {
+			player.Say(HeroSpeech::ICantUseThisYet);
+			return;
+		}
+		if (player._pmode > PM_WALK_SIDEWAYS)
+			return;
+	}
+
+	if (&player == MyPlayer) {
+		PlaySFX(ItemInvSnds[ItemCAnimTbl[player.HoldItem._iCurs]]);
+	}
+
+	// Select the parameters that go into
+	// ChangeEquipment and add it to post switch
+	switch (location) {
+	case ILOC_HELM:
+	case ILOC_RING:
+	case ILOC_AMULET:
+	case ILOC_ARMOR:
+		ChangeBodyEquipment(player, slot, location);
+		break;
+	case ILOC_ONEHAND:
+		ChangeEquippedItem(player, slot);
+		break;
+	case ILOC_TWOHAND:
+		ChangeTwoHandItem(player);
+		break;
+	case ILOC_UNEQUIPABLE:
+		if (!ChangeInvItem(player, slot, itemSize)) return;
+		break;
+	case ILOC_BELT:
+		ChangeBeltItem(player, slot);
+		break;
+	case ILOC_NONE:
+	case ILOC_INVALID:
+		break;
+	}
+
+	CalcPlrInv(player, true);
+	if (&player == MyPlayer) {
+		NewCursor(player.HoldItem);
+	}
+}
+
 } // namespace devilution

Source/inv.h

@@ -389,6 +389,10 @@ inline bool RemoveInventoryOrBeltItemById(Player &player, _item_indexes id)
  */
 void ConsumeScroll(Player &player);
 
+void CheckInvCut(Player &player, Point cursorPosition, bool automaticMove, bool dropItem);
+
+void CheckInvPaste(Player &player, Point cursorPosition);
+
 /* data */
 
 } // namespace devilution

Source/minitext.cpp

@@ -26,6 +26,8 @@ namespace devilution {
 
 bool qtextflag;
 
+std::vector<std::string> TextLines;
+
 namespace {
 
 /** Vertical speed of the scrolling text in ms/px */
@@ -38,8 +40,6 @@ OptionalOwnedClxSpriteList pTextBoxCels;
 /** Pixels for a line of text and the empty space under it. */
 const int LineHeight = 38;
 
-std::vector<std::string> TextLines;
-
 void LoadText(std::string_view text)
 {
 	TextLines.clear();

Source/minitext.h

@@ -13,6 +13,8 @@ namespace devilution {
 /** Specify if the quest dialog window is being shown */
 extern bool qtextflag;
 
+extern std::vector<std::string> TextLines;
+
 /**
  * @brief Free the resources used by the quest dialog window
  */

Source/portal.cpp

@@ -16,11 +16,6 @@ namespace devilution {
 /** In-game state of portals. */
 Portal Portals[MAXPORTAL];
 
-namespace {
-
-/** Current portal number (a portal array index). */
-size_t portalindex;
-
 /** Coordinate of each player's portal in town. */
 Point PortalTownPosition[MAXPORTAL] = {
 	{ 57, 40 },
@@ -29,6 +24,11 @@ Point PortalTownPosition[MAXPORTAL] = {
 	{ 63, 40 },
 };
 
+namespace {
+
+/** Current portal number (a portal array index). */
+size_t portalindex;
+
 } // namespace
 
 void InitPortals()

Source/portal.h

@@ -25,6 +25,8 @@ struct Portal {
 
 extern Portal Portals[MAXPORTAL];
 
+extern Point PortalTownPosition[MAXPORTAL];
+
 void InitPortals();
 void SetPortalStats(int i, bool o, Point position, int lvl, dungeon_type lvltype, bool isSetLevel);
 void AddPortalMissile(const Player &player, Point position, bool sync);

Source/qol/chatlog.cpp

@@ -28,23 +28,13 @@
 
 namespace devilution {
 
-namespace {
-
-struct ColoredText {
-	std::string text;
-	UiFlags color;
-};
+std::vector<MultiColoredText> ChatLogLines;
+unsigned int MessageCounter = 0;
 
-struct MultiColoredText {
-	std::string text;
-	std::vector<ColoredText> colors;
-};
+namespace {
 
 bool UnreadFlag = false;
 size_t SkipLines;
-unsigned int MessageCounter = 0;
-
-std::vector<MultiColoredText> ChatLogLines;
 
 constexpr int PaddingTop = 32;
 constexpr int PaddingLeft = 32;

Source/qol/chatlog.h

@@ -11,7 +11,19 @@
 
 namespace devilution {
 
+struct ColoredText {
+	std::string text;
+	UiFlags color;
+};
+
+struct MultiColoredText {
+	std::string text;
+	std::vector<ColoredText> colors;
+};
+
 extern bool ChatLogFlag;
+extern std::vector<MultiColoredText> ChatLogLines;
+extern unsigned int MessageCounter;
 
 void ToggleChatLog();
 void AddMessageToChatLog(std::string_view message, Player *player = nullptr, UiFlags flags = UiFlags::ColorWhite);

Source/stores.cpp

@@ -54,65 +54,39 @@ StaticVector<Item, NumWitchItemsHf> WitchItems;
 int BoyItemLevel;
 Item BoyItem;
 
-namespace {
+/** Text lines */
+STextStruct TextLine[NumStoreLines];
 
 /** The current towner being interacted with */
 _talker_id TownerId;
 
-/** Is the current dialog full size */
-bool IsTextFullSize;
-
-/** Number of text lines in the current dialog */
-int NumTextLines;
 /** Remember currently selected text line from TextLine while displaying a dialog */
 int OldTextLine;
+
+/** Remember current store while displaying a dialog */
+TalkID OldActiveStore;
+
+/** Remember last scroll position */
+int OldScrollPos;
+/** Scroll position */
+int ScrollPos;
+
 /** Currently selected text line from TextLine */
 int CurrentTextLine;
 
-struct STextStruct {
-	enum Type : uint8_t {
-		Label,
-		Divider,
-		Selectable,
-	};
-
-	std::string text;
-	int _sval;
-	int y;
-	UiFlags flags;
-	Type type;
-	uint8_t _sx;
-	uint8_t _syoff;
-	int cursId;
-	bool cursIndent;
-
-	[[nodiscard]] bool isDivider() const
-	{
-		return type == Divider;
-	}
-	[[nodiscard]] bool isSelectable() const
-	{
-		return type == Selectable;
-	}
+namespace {
 
-	[[nodiscard]] bool hasText() const
-	{
-		return !text.empty();
-	}
-};
+/** Is the current dialog full size */
+bool IsTextFullSize;
 
-/** Text lines */
-STextStruct TextLine[NumStoreLines];
+/** Number of text lines in the current dialog */
+int NumTextLines;
 
 /** Whether to render the player's gold amount in the top left */
 bool RenderGold;
 
 /** Does the current panel have a scrollbar */
 bool HasScrollbar;
-/** Remember last scroll position */
-int OldScrollPos;
-/** Scroll position */
-int ScrollPos;
 /** Next scroll position */
 int NextScrollPos;
 /** Previous scroll position */
@@ -122,9 +96,6 @@ int8_t CountdownScrollUp;
 /** Countdown for the push state of the scroll down button */
 int8_t CountdownScrollDown;
 
-/** Remember current store while displaying a dialog */
-TalkID OldActiveStore;
-
 /** Temporary item used to hold the item being traded */
 Item TempItem;
 
@@ -337,25 +308,6 @@ void PrintStoreItem(const Item &item, int l, UiFlags flags, bool cursIndent = fa
 	AddSText(40, l++, productLine, flags, false, -1, cursIndent);
 }
 
-bool StoreAutoPlace(Item &item, bool persistItem)
-{
-	Player &player = *MyPlayer;
-
-	if (AutoEquipEnabled(player, item) && AutoEquip(player, item, persistItem, true)) {
-		return true;
-	}
-
-	if (AutoPlaceItemInBelt(player, item, persistItem, true)) {
-		return true;
-	}
-
-	if (persistItem) {
-		return AutoPlaceItemInInventory(player, item, true);
-	}
-
-	return CanFitItemInInventory(player, item);
-}
-
 void ScrollVendorStore(std::span<Item> itemData, int storeLimit, int idx, int selling = true)
 {
 	ClearSText(5, 21);
@@ -400,17 +352,6 @@ void ScrollSmithBuy(int idx)
 	ScrollVendorStore(SmithItems, static_cast<int>(SmithItems.size()), idx);
 }
 
-uint32_t TotalPlayerGold()
-{
-	return MyPlayer->_pGold + Stash.gold;
-}
-
-// TODO: Change `_iIvalue` to be unsigned instead of passing `int` here.
-bool PlayerCanAfford(int price)
-{
-	return TotalPlayerGold() >= static_cast<uint32_t>(price);
-}
-
 void StartSmithBuy()
 {
 	IsTextFullSize = true;
@@ -1365,20 +1306,6 @@ void SmithPremiumBuyEnter()
 	StartStore(TalkID::Confirm);
 }
 
-bool StoreGoldFit(Item &item)
-{
-	const int cost = item._iIvalue;
-
-	const Size itemSize = GetInventorySize(item);
-	const int itemRoomForGold = itemSize.width * itemSize.height * MaxGold;
-
-	if (cost <= itemRoomForGold) {
-		return true;
-	}
-
-	return cost <= itemRoomForGold + RoomForGold();
-}
-
 /**
  * @brief Sells an item from the player's inventory or belt.
  */
@@ -2740,4 +2667,48 @@ bool IsPlayerInStore()
 	return ActiveStore != TalkID::None;
 }
 
+uint32_t TotalPlayerGold()
+{
+	return MyPlayer->_pGold + Stash.gold;
+}
+
+// TODO: Change `_iIvalue` to be unsigned instead of passing `int` here.
+bool PlayerCanAfford(int price)
+{
+	return TotalPlayerGold() >= static_cast<uint32_t>(price);
+}
+
+bool StoreAutoPlace(Item &item, bool persistItem)
+{
+	Player &player = *MyPlayer;
+
+	if (AutoEquipEnabled(player, item) && AutoEquip(player, item, persistItem, true)) {
+		return true;
+	}
+
+	if (AutoPlaceItemInBelt(player, item, persistItem, true)) {
+		return true;
+	}
+
+	if (persistItem) {
+		return AutoPlaceItemInInventory(player, item, true);
+	}
+
+	return CanFitItemInInventory(player, item);
+}
+
+bool StoreGoldFit(Item &item)
+{
+	int cost = item._iIvalue;
+
+	Size itemSize = GetInventorySize(item);
+	int itemRoomForGold = itemSize.width * itemSize.height * MaxGold;
+
+	if (cost <= itemRoomForGold) {
+		return true;
+	}
+
+	return cost <= itemRoomForGold + RoomForGold();
+}
+
 } // namespace devilution

Source/stores.h

@@ -13,6 +13,7 @@
 #include "engine/clx_sprite.hpp"
 #include "engine/surface.hpp"
 #include "game_mode.hpp"
+#include "towners.h"
 #include "utils/attributes.h"
 #include "utils/static_vector.hpp"
 
@@ -35,6 +36,41 @@ constexpr int NumWitchPinnedItems = 3;
 
 constexpr int NumStoreLines = 104;
 
+struct STextStruct {
+	enum Type : uint8_t {
+		Label,
+		Divider,
+		Selectable,
+	};
+
+	std::string text;
+	int _sval;
+	int y;
+	UiFlags flags;
+	Type type;
+	uint8_t _sx;
+	uint8_t _syoff;
+	int cursId;
+	bool cursIndent;
+
+	[[nodiscard]] bool isDivider() const
+	{
+		return type == Divider;
+	}
+	[[nodiscard]] bool isSelectable() const
+	{
+		return type == Selectable;
+	}
+
+	[[nodiscard]] bool hasText() const
+	{
+		return !text.empty();
+	}
+};
+
+/** Text lines */
+extern STextStruct TextLine[NumStoreLines];
+
 enum class TalkID : uint8_t {
 	None,
 	Smith,
@@ -92,6 +128,23 @@ extern int BoyItemLevel;
 /** Current item sold by Wirt */
 extern Item BoyItem;
 
+/** The current towner being interacted with */
+extern _talker_id TownerId;
+
+/** Remember currently selected text line from TextLine while displaying a dialog */
+extern int OldTextLine;
+
+/** Remember current store while displaying a dialog */
+extern TalkID OldActiveStore;
+
+/** Remember last scroll position */
+extern int OldScrollPos;
+/** Scroll position */
+extern int ScrollPos;
+
+/** Currently selected text line from TextLine */
+extern int CurrentTextLine;
+
 void AddStoreHoldRepair(Item *itm, int8_t i);
 
 /** Clears premium items sold by Griswold and Wirt. */
@@ -118,5 +171,9 @@ void StoreEnter();
 void CheckStoreBtn();
 void ReleaseStoreBtn();
 bool IsPlayerInStore();
+uint32_t TotalPlayerGold();
+bool PlayerCanAfford(int price);
+bool StoreAutoPlace(Item &item, bool persistItem);
+bool StoreGoldFit(Item &item);
 
 } // namespace devilution

vcpkg.json

@@ -30,6 +30,10 @@
 				}
 			]
 		},
+		"dapi": {
+			"description": "Build DAPI server for gameplay automation",
+			"dependencies": [ "protobuf", "sfml" ]
+		},
 		"tests": {
 			"description": "Build tests",
 			"dependencies": [ "gtest", "benchmark" ]