update xmake.lua

commit a8cbebc8d11d3621924b189a58a4f150d30324e9
Author: Simon Pribylski <sim16.prib@gmail.com>
Date:   Sat Feb 10 14:00:26 2024 +0100

    jsp

commit a00ae1f6d9db33efef5e276bfc7101a1d24cf7d8
Author: Simon Pribylski <sim16.prib@gmail.com>
Date:   Sat Feb 10 13:17:03 2024 +0100

    lol

commit d3dcaf3659251bb8fb0d4984ea188601a058757b
Author: Simon Pribylski <sim16.prib@gmail.com>
Date:   Sat Feb 10 13:02:12 2024 +0100

    zsdf

commit 8ce343ff361ba0618d09d488404ff15c7d19de66
Author: Simon Pribylski <sim16.prib@gmail.com>
Date:   Sat Feb 10 12:55:39 2024 +0100

    caca

commit 9f2a818ee57c751cb1283f12cfcc2c3617a3bd63
Author: Simon Pribylski <sim16.prib@gmail.com>
Date:   Sat Feb 10 12:38:20 2024 +0100

    remove run name

commit b618dc176980ef18ae9a04f43a8abef311ca4329
Author: Simon Pribylski <sim16.prib@gmail.com>
Date:   Sat Feb 10 12:20:35 2024 +0100

    change action name

commit 3092a403fdb2ded81d6f7558f621d0f8ac5dc1f5
Author: Simon Pribylski <sim16.prib@gmail.com>
Date:   Sat Feb 10 12:06:03 2024 +0100

    fix action typo

commit 0cd675ef6c42758bef182307cce55d74aa2959fe
Author: Simon Pribylski <sim16.prib@gmail.com>
Date:   Sat Feb 10 11:56:16 2024 +0100

    add action cache name

    Signed-off-by: Simon Pribylski <sim16.prib@gmail.com>

commit 4a6e6754f0a82a35fa4d6793321c7d27cb3e9f37
Author: Simon Pribylski <sim16.prib@gmail.com>
Date:   Sat Feb 10 11:28:48 2024 +0100

    remove ssl ignore

    Signed-off-by: Simon Pribylski <sim16.prib@gmail.com>

commit 1808ca96ec84390915ace0678bc824d92cc3d1b3
Author: Simon Pribylski <sim16.prib@gmail.com>
Date:   Mon Jan 1 13:29:10 2024 +0100

    change action name

commit 5a966bbe77463a93ab210cd4b6a122ab1d440486
Author: Simon Pribylski <sim16.prib@gmail.com>
Date:   Mon Jan 1 13:22:16 2024 +0100

    cpp standard global

commit 673d1457162dda9018712d0a19ac5b3954ad265f
Author: Simon Pribylski <sim16.prib@gmail.com>
Date:   Mon Jan 1 13:21:36 2024 +0100

    add glew dep

commit b64eb6dd3ef535183dd0620beeeaa99deb323c97
Author: Simon Pribylski <sim16.prib@gmail.com>
Date:   Mon Jan 1 13:16:23 2024 +0100

    confirm

commit 1bf8065179b74f3dd194e05739a064097bdc2ebd
Author: Simon Pribylski <sim16.prib@gmail.com>
Date:   Mon Jan 1 13:15:37 2024 +0100

    remove sudo

commit 2dc4ee69ebba3821916963a96621d6f8b59d4808
Author: Simon Pribylski <sim16.prib@gmail.com>
Date:   Mon Jan 1 13:09:55 2024 +0100

    install apt

commit 69574b9c5a5074c2fdf87dfc8c068d9c64f7704c
Author: Simon Pribylski <sim16.prib@gmail.com>
Date:   Mon Jan 1 10:31:11 2024 +0100

    add xmake cache

commit 4d7d04c6722ca8e94d10569f25ae582265866948
Author: Simon Pribylski <sim16.prib@gmail.com>
Date:   Mon Jan 1 01:21:45 2024 +0100

    aaaaaaaaaaaaaaaaaa

commit aa7dac26cd9900c676e4662fadb7832700a3363a
Author: Simon Pribylski <sim16.prib@gmail.com>
Date:   Mon Jan 1 01:13:08 2024 +0100

    fiiiiiiiiiiiiiix xmake root

commit 3604b44d04f492254911a0508e8555aca61b4d26
Author: Simon Pribylski <sim16.prib@gmail.com>
Date:   Mon Jan 1 01:05:43 2024 +0100

    fix xmake root

commit cfcb8d4df46c6febeca47dff2f0447048b8f68ad
Author: Simon Pribylski <sim16.prib@gmail.com>
Date:   Mon Jan 1 01:03:56 2024 +0100

    run xmake as root

commit dbef2d27138ccce1124cc1979867baf15e897a7f
Author: Simon Pribylski <sim16.prib@gmail.com>
Date:   Mon Jan 1 00:54:54 2024 +0100

    xmake action

commit 42196398ced1e7f38c0234d82dc7cd65ef7aeb6d
Author: Simon Pribylski <sim16.prib@gmail.com>
Date:   Mon Jan 1 00:53:29 2024 +0100

    xmake

commit 51256d8c15066120c2df3a72063856a0a47f8b59
Author: Simon Pribylski <sim16.prib@gmail.com>
Date:   Mon Jan 1 00:47:35 2024 +0100

    Fix Linux.yaml

    add cert

commit 9c024fa8eb92765aff3fb195ce7c8c10a1b49d0b
Author: Simon Pribylski <sim16.prib@gmail.com>
Date:   Sun Dec 31 22:34:54 2023 +0100

    Add Linux actions

.gitea/workflows/linux.yaml

@@ -0,0 +1,46 @@
+name: Linux arm64
+run-name: Build And Test
+
+on: [push]
+
+jobs:
+  Build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Install deps
+        run : |
+          apt update
+          apt install -y libsdl2-dev libglew-dev                    
+
+      - name: Check out repository code
+        uses: actions/checkout@v3
+
+      - name: Prepare XMake
+        uses: xmake-io/github-action-setup-xmake@v1
+        with:
+          xmake-version: latest
+          actions-cache-folder: '.xmake-cache'
+          actions-cache-key: 'xmake-ubuntu'
+
+      - name: Calc deps hash
+        uses: seepine/hash-files@v1
+        id: get-hash
+        with: 
+          patterns: |
+            **/xmake.lua
+            **/xmake/*.lua                        
+
+      - name: Packages cache
+        uses: actions/cache@v4
+        with:
+          path: ~/.xmake
+          key: ${{ runner.os }}-${{ steps.get-hash.outputs.hash }}
+
+      - name: XMake config
+        run: xmake f -p linux -y --root
+
+      - name: Build
+        run: xmake --root
+
+      - name: Test
+        run: xmake test --root     

README.md

@@ -0,0 +1,18 @@
+# TowerDefense
+
+Unmaintained multiplayer tower defense game prototype
+(OpenGL + TCP)
+
+## Screenshots 🖼
+
+[[screenshots/game.png]]
+
+## Build ⚙️
+```
+xmake
+```
+
+## Run 🏃
+```
+xmake run
+```

include/client/game/WorldClient.h

@@ -20,6 +20,7 @@ public:
 	virtual void HandlePacket(const protocol::SpawnMobPacket* packet) override;
 	virtual void HandlePacket(const protocol::UpgradeTowerPacket* packet) override;
 	virtual void HandlePacket(const protocol::WorldAddTowerPacket* packet) override;
+	virtual void HandlePacket(const protocol::RemoveMobPacket* packet) override;
 	virtual void HandlePacket(const protocol::RemoveTowerPacket* packet) override;
 	virtual void HandlePacket(const protocol::UpdateMobStatesPacket* packet) override;
 	virtual void HandlePacket(const protocol::UpdateCastleLifePacket* packet) override;

include/client/updater/Updater.h

@@ -2,7 +2,7 @@
 
 #include "td/misc/DataBuffer.h"
 
-#define TD_VERSION "alpha-0.3.0"
+#define TD_VERSION "alpha-0.4.0"
 
 namespace td {
 namespace utils {

include/server/game/ServerGame.h

@@ -35,6 +35,7 @@ public:
 	virtual void OnGameClose() override;
 
 	virtual void OnPlayerJoin(game::PlayerID id) override;
+	virtual void OnPlayerLeave(game::PlayerID id) override;
 private:
 	void BalanceTeams();
 	void InitPlayerStats();

include/td/game/Mobs.h

@@ -99,7 +99,7 @@ private:
 	utils::CooldownTimer m_AttackTimer;
 
 public:
-	Mob(MobID id, MobLevel level, PlayerID sender) : m_Sender(sender), m_Level(level),
+	Mob(MobID id, MobLevel level, PlayerID sender) : m_ID(id), m_Sender(sender), m_Level(level),
 		m_HitCooldown(0), m_EffectFireTimer(1000), m_EffectPoisonTimer(1000),
 		m_EffectHealTimer(1000), m_CastleTarget(nullptr), m_AttackTimer(1000) {
 

include/td/game/World.h

@@ -174,6 +174,7 @@ public:
 	void Reset();  // clear mobs and towers
 
 	void SpawnMobAt(MobID id, MobType type, std::uint8_t level, PlayerID sender, float x, float y, Direction dir);
+	MobPtr RemoveMob(MobID id);
 
 	TowerPtr PlaceTowerAt(TowerID id, TowerType type, std::int32_t x, std::int32_t y, PlayerID builder);
 	TowerPtr RemoveTower(TowerID id);
@@ -219,7 +220,9 @@ public:
 
 	const TeamList& GetTeams() const;
 
+	TowerList& GetTowers() { return m_Towers; }
 	const TowerList& GetTowers() const { return m_Towers; }
+
 	TowerPtr GetTowerById(TowerID tower);
 
 	const Player* GetPlayerById(PlayerID id) const;

include/td/misc/DataBuffer.h

@@ -5,6 +5,7 @@
 #include <cstring>
 #include <cassert>
 #include <string>
+#include <cstdint>
 
 namespace td {
 

include/td/network/IPAddress.h

@@ -4,6 +4,7 @@
 #include <string>
 #include <iosfwd>
 #include <vector>
+#include <cstdint>
 
 namespace td {
 namespace network {

include/td/protocol/PacketHandler.h

@@ -27,6 +27,7 @@ public:
 	virtual void HandlePacket(const PlayerLeavePacket* packet) {}
 	virtual void HandlePacket(const PlayerListPacket* packet) {}
 	virtual void HandlePacket(const PlayerLoginPacket* packet) {}
+	virtual void HandlePacket(const RemoveMobPacket* packet) {}
 	virtual void HandlePacket(const RemoveTowerPacket* packet) {}
 	virtual void HandlePacket(const SelectTeamPacket* packet) {}
 	virtual void HandlePacket(const SendMobsPacket* packet) {}

include/td/protocol/Packets.h

@@ -8,6 +8,7 @@
 #include "packets/PlayerLeavePacket.h"
 #include "packets/PlayerListPacket.h"
 #include "packets/PlayerLoginPacket.h"
+#include "packets/RemoveMobPacket.h"
 #include "packets/RemoveTowerPacket.h"
 #include "packets/SelectTeamPacket.h"
 #include "packets/SendMobsPacket.h"

include/td/protocol/PacketsForward.h

@@ -29,6 +29,7 @@ class UpdateCastleLifePacket;
 class UpdateMobStatesPacket;
 class PlayerBuyItemPacket;
 class PlayerBuyMobUpgradePacket;
+class RemoveMobPacket;
 
 } // namespace protocol
 } // namespace td

include/td/protocol/Protocol.h

@@ -13,7 +13,6 @@ enum class PacketType : std::uint8_t {
 	// client --> server
 	PlayerLogin = 0,
 	SelectTeam,
-	SpawnMob,
 	SendMobs,
 	PlaceTower,
 
@@ -33,6 +32,8 @@ enum class PacketType : std::uint8_t {
 	WorldAddTower,
 	UpdateMobStates,
 	UpdateCastleLife,
+	SpawnMob,
+	RemoveMob,
 
 	// client <--> server
 	KeepAlive,

include/td/protocol/packets/RemoveMobPacket.h

@@ -0,0 +1,27 @@
+#pragma once
+
+#include "td/protocol/Protocol.h"
+#include "td/game/BaseGame.h"
+
+namespace td {
+namespace protocol {
+
+class RemoveMobPacket : public Packet {
+private:
+	game::MobID m_MobID;
+public:
+	RemoveMobPacket() {}
+	RemoveMobPacket(game::MobID id) : m_MobID(id) {}
+	virtual ~RemoveMobPacket() {}
+
+	virtual DataBuffer Serialize(bool packetID = true) const;
+	virtual void Deserialize(DataBuffer& data);
+	virtual void Dispatch(PacketHandler* handler) const;
+
+	game::MobID GetMobID() const { return m_MobID; }
+
+	virtual PacketType GetType() const { return PacketType::RemoveMob; }
+};
+
+} // namespace protocol
+} // namespace td

src/client/game/WorldClient.cpp

@@ -8,6 +8,7 @@
 #include "td/protocol/packets/WorldDataPacket.h"
 #include "td/protocol/packets/SpawnMobPacket.h"
 #include "td/protocol/packets/UpgradeTowerPacket.h"
+#include "td/protocol/packets/RemoveMobPacket.h"
 #include "td/protocol/packets/RemoveTowerPacket.h"
 #include "td/protocol/packets/UpdateCastleLifePacket.h"
 #include "td/protocol/packets/UpdateMobStatesPacket.h"
@@ -21,6 +22,7 @@ WorldClient::WorldClient(ClientGame* game) : game::World(game), protocol::Packet
 	GetDispatcher()->RegisterHandler(protocol::PacketType::WorldData, this);
 	GetDispatcher()->RegisterHandler(protocol::PacketType::SpawnMob, this);
 	GetDispatcher()->RegisterHandler(protocol::PacketType::UpgradeTower, this);
+	GetDispatcher()->RegisterHandler(protocol::PacketType::RemoveMob, this);
 	GetDispatcher()->RegisterHandler(protocol::PacketType::RemoveTower, this);
 	GetDispatcher()->RegisterHandler(protocol::PacketType::UpdateCastleLife, this);
 	GetDispatcher()->RegisterHandler(protocol::PacketType::UpdateMobStates, this);
@@ -50,7 +52,9 @@ void WorldClient::HandlePacket(const protocol::SpawnMobPacket* packet) {
 
 void WorldClient::HandlePacket(const protocol::UpgradeTowerPacket* packet) {
 	game::TowerPtr tower = GetTowerById(packet->GetTowerID());
-	if (tower == nullptr) return; // this should not happen but who knows ?
+
+	SAFE_CHECK(tower);
+
 	tower->Upgrade(packet->GetTowerLevel().GetLevel(), packet->GetTowerLevel().GetPath());
 }
 
@@ -63,9 +67,17 @@ void WorldClient::HandlePacket(const protocol::WorldAddTowerPacket* packet) {
 void WorldClient::HandlePacket(const protocol::RemoveTowerPacket* packet) {
 	game::TowerPtr tower = RemoveTower(packet->GetTowerID());
 
-	if (tower != nullptr) {
-		GetWorldNotifier().NotifyListeners(&WorldListener::OnTowerRemove, tower);
-	}
+	SAFE_CHECK(tower);
+
+	GetWorldNotifier().NotifyListeners(&WorldListener::OnTowerRemove, tower);
+}
+
+void WorldClient::HandlePacket(const protocol::RemoveMobPacket* packet) {
+	game::MobPtr mob = RemoveMob(packet->GetMobID());
+
+	SAFE_CHECK(mob);
+
+	//GetWorldNotifier().NotifyListeners(&MobListener::OnMobDie, mob.get());
 }
 
 void WorldClient::HandlePacket(const protocol::UpdateMobStatesPacket* packet) {

src/client/render/Renderer.cpp

@@ -6,6 +6,7 @@
  */
 
 #include <stdio.h>
+#include <algorithm>
 
 #include "client/render/Renderer.h"
 #include "client/render/GL.h"

src/server/Server.cpp

@@ -163,12 +163,16 @@ void Server::BroadcastPacket(const protocol::Packet* packet) {
 }
 
 void Server::RemoveConnexion(std::uint8_t connexionID) {
-	std::string playerName = GetGame().GetPlayerById(connexionID)->GetName();
+	m_Connections.erase(connexionID);
+	
+	td::game::Player* player = GetGame().GetPlayerById(connexionID);
+	SAFE_CHECK(player);
+
+	std::string playerName = player->GetName();
 	
 	GetGame().RemovePlayer(connexionID);
-	m_Connections.erase(connexionID);
 	m_Lobby.OnPlayerLeave(connexionID);
-	
+
 	utils::LOG(utils::format("\t[%s] left !", playerName.c_str()));
 	
 	OnPlayerLeave(connexionID);
@@ -176,13 +180,10 @@ void Server::RemoveConnexion(std::uint8_t connexionID) {
 
 void Server::OnPlayerJoin(std::uint8_t id) {
 	m_Lobby.OnPlayerJoin(id);
-
-	GetPlayers().insert({ id, game::Player{id} });
 }
 
 void Server::OnPlayerLeave(std::uint8_t id) {
-	protocol::PlayerLeavePacket packet(id);
-	BroadcastPacket(&packet);
+	GetGame().NotifyListeners(&game::GameListener::OnPlayerLeave, id);
 
 	if (GetPlayers().empty() && m_Game.GetGameState() != game::GameState::Lobby) {
 		utils::LOG("All players left. Go back to lobby ...");

src/server/ServerConnexion.cpp

@@ -13,6 +13,7 @@
 #include "td/protocol/packets/RemoveTowerPacket.h"
 #include "td/protocol/packets/SelectTeamPacket.h"
 #include "td/protocol/packets/SendMobsPacket.h"
+#include "td/protocol/packets/SpawnMobPacket.h"
 #include "td/protocol/packets/UpdatePlayerTeamPacket.h"
 #include "td/protocol/packets/UpdateGameStatePacket.h"
 #include "td/protocol/packets/UpgradeTowerPacket.h"
@@ -92,62 +93,94 @@ void ServerConnexion::SendKeepAlive() {
 }
 
 void ServerConnexion::HandlePacket(const protocol::PlayerLoginPacket* packet) {
-	if (m_Player->GetName().empty() && !packet->GetPlayerName().empty()) {
-		m_Player->SetName(packet->GetPlayerName());
 
-		utils::LOG(utils::format("\t[%s] joined !", m_Player->GetName().c_str()));
+	if (m_Server->GetGame().GetGameState() != game::GameState::Lobby) {
+		protocol::DisconnectPacket packet("Cannot join during game");
+		SendPacket(&packet);
 
-		protocol::PlayerJoinPacket joinPacket(m_ID, m_Player->GetName());
-		m_Server->BroadcastPacket(&joinPacket);
+		CloseConnection();
+		return;
+	}
+	
+	SAFE_CHECK(!packet->GetPlayerName().empty());
 
-		std::map<std::uint8_t, protocol::PlayerInfo> playerNames;
-		for (const auto& pair : m_Server->GetPlayers()) {
-			const game::Player& player = pair.second;
-			if (!player.GetName().empty()) {
-				protocol::PlayerInfo playerInfo;
-				playerInfo.name = player.GetName();
-				playerInfo.team = player.GetTeamColor();
-				playerNames.insert({ player.GetID(), playerInfo });
-			}
+	if (!m_Player) {  // player does not exist yet
+		auto playerPos = m_Server->GetPlayers().insert({ m_ID, game::Player{m_ID} });
+		m_Player = &playerPos.first->second;
+	}
+
+	SAFE_CHECK(m_Player->GetName().empty());
+
+	m_Player->SetName(packet->GetPlayerName());
+
+	utils::LOG(utils::format("\t[%s] joined !", m_Player->GetName().c_str()));
+
+	protocol::PlayerJoinPacket joinPacket(m_ID, m_Player->GetName());
+	m_Server->BroadcastPacket(&joinPacket);
+
+	std::map<std::uint8_t, protocol::PlayerInfo> playerNames;
+	for (const auto& pair : m_Server->GetPlayers()) {
+		const game::Player& player = pair.second;
+		if (!player.GetName().empty()) {
+			protocol::PlayerInfo playerInfo;
+			playerInfo.name = player.GetName();
+			playerInfo.team = player.GetTeamColor();
+			playerNames.insert({ player.GetID(), playerInfo });
 		}
+	}
 
-		protocol::PlayerListPacket listPacket(playerNames);
-		SendPacket(&listPacket);
+	protocol::PlayerListPacket listPacket(playerNames);
+	SendPacket(&listPacket);
 
-		protocol::UpdateGameStatePacket statePacket(m_Server->GetGame().GetGameState());
-		SendPacket(&statePacket);
+	protocol::UpdateGameStatePacket statePacket(m_Server->GetGame().GetGameState());
+	SendPacket(&statePacket);
 
-		m_Server->GetGame().NotifyListeners(&game::GameListener::OnPlayerJoin, m_ID);
-		
-		protocol::WorldBeginDataPacket headerDataPacket(m_Server->GetGame().GetWorld());
-		protocol::WorldDataPacket dataPacket(m_Server->GetGame().GetWorld());
-		SendPacket(&headerDataPacket);
-		SendPacket(&dataPacket);
+	m_Server->GetGame().NotifyListeners(&game::GameListener::OnPlayerJoin, m_ID);
+
+	protocol::WorldBeginDataPacket headerDataPacket(m_Server->GetGame().GetWorld());
+	protocol::WorldDataPacket dataPacket(m_Server->GetGame().GetWorld());
+	SendPacket(&headerDataPacket);
+	SendPacket(&dataPacket);
+
+	// place towers
+	for (auto tower : m_Server->GetGame().GetWorld()->GetTowers()) {
+		protocol::WorldAddTowerPacket packet(tower->GetID(), static_cast<std::int32_t>(tower->GetCenterX() - 0.5f), 
+			static_cast<std::int32_t>(tower->GetCenterY() - 0.5f), tower->GetType(), tower->GetBuilder());
+		SendPacket(&packet);
+	}
+
+	// spawn mobs
+	for (auto mob : m_Server->GetGame().GetWorld()->GetMobList()) {
+		protocol::SpawnMobPacket packet(mob->GetMobID(), mob->GetType(), mob->GetLevel(), mob->GetSender(),
+			mob->GetCenterX(), mob->GetCenterY(), mob->GetDirection());
+		SendPacket(&packet);
+		// TODO : update health
 	}
 }
 
 void ServerConnexion::HandlePacket(const protocol::SelectTeamPacket* packet) {
 	SAFE_CHECK(m_Server->GetGame().GetGameState() == game::GameState::Lobby);
+	SAFE_CHECK(static_cast<std::int8_t>(packet->GetSelectedTeam()) >= -1 ||
+		static_cast<std::int8_t>(packet->GetSelectedTeam()) <= 1);
 
-	if (static_cast<std::int8_t>(packet->GetSelectedTeam()) >= -1 || static_cast<std::int8_t>(packet->GetSelectedTeam()) <= 1) {
-		if (m_Player->GetTeamColor() == game::TeamColor::None) { // join a team
-			m_Server->GetGame().GetTeam(packet->GetSelectedTeam()).AddPlayer(m_Player);
-		} else if (packet->GetSelectedTeam() == game::TeamColor::None) { // leave a team
-			m_Server->GetGame().GetTeam(m_Player->GetTeamColor()).RemovePlayer(m_Player);
-			m_Player->SetTeamColor(game::TeamColor::None);
-		} else { // change team
-			m_Server->GetGame().GetTeam(m_Player->GetTeamColor()).RemovePlayer(m_Player);
-			m_Server->GetGame().GetTeam(packet->GetSelectedTeam()).AddPlayer(m_Player);
-		}
-		m_Player->SetTeamColor(packet->GetSelectedTeam());
-		protocol::UpdatePlayerTeamPacket updateTeamPacket(m_ID, packet->GetSelectedTeam());
-		m_Server->BroadcastPacket(&updateTeamPacket);
+	if (m_Player->GetTeamColor() == game::TeamColor::None) { // join a team
+		m_Server->GetGame().GetTeam(packet->GetSelectedTeam()).AddPlayer(m_Player);
+	} else if (packet->GetSelectedTeam() == game::TeamColor::None) { // leave a team
+		m_Server->GetGame().GetTeam(m_Player->GetTeamColor()).RemovePlayer(m_Player);
+		m_Player->SetTeamColor(game::TeamColor::None);
+	} else { // change team
+		m_Server->GetGame().GetTeam(m_Player->GetTeamColor()).RemovePlayer(m_Player);
+		m_Server->GetGame().GetTeam(packet->GetSelectedTeam()).AddPlayer(m_Player);
 	}
+	m_Player->SetTeamColor(packet->GetSelectedTeam());
+	protocol::UpdatePlayerTeamPacket updateTeamPacket(m_ID, packet->GetSelectedTeam());
+	m_Server->BroadcastPacket(&updateTeamPacket);
 }
 
 void ServerConnexion::HandlePacket(const protocol::KeepAlivePacket* packet) {
-	if (packet->GetAliveID() == m_KeepAlive.keepAliveID)
-		m_KeepAlive.recievedResponse = true;
+	SAFE_CHECK(packet->GetAliveID() == m_KeepAlive.keepAliveID);
+
+	m_KeepAlive.recievedResponse = true;
 }
 
 void ServerConnexion::HandlePacket(const protocol::DisconnectPacket* packet) {
@@ -156,7 +189,6 @@ void ServerConnexion::HandlePacket(const protocol::DisconnectPacket* packet) {
 
 void ServerConnexion::SetServer(Server* server) {
 	m_Server = server;
-	m_Player = &m_Server->GetPlayers().at(m_ID);
 	InitConnection();
 	SendKeepAlive();
 }
@@ -209,8 +241,9 @@ void ServerConnexion::HandlePacket(const protocol::RemoveTowerPacket* packet) {
 }
 
 ServerConnexion::~ServerConnexion() {
-	if (GetDispatcher() != nullptr)
-		GetDispatcher()->UnregisterHandler(this);
+	SAFE_CHECK(GetDispatcher() != nullptr);
+	
+	GetDispatcher()->UnregisterHandler(this);
 }
 
 } // namespace server

src/server/game/ServerGame.cpp

@@ -2,6 +2,9 @@
 #include "server/Server.h"
 
 #include "td/protocol/packets/DisconnectPacket.h"
+#include "td/protocol/packets/PlayerLeavePacket.h"
+#include "td/protocol/packets/RemoveMobPacket.h"
+#include "td/protocol/packets/RemoveTowerPacket.h"
 #include "td/protocol/packets/UpdatePlayerTeamPacket.h"
 #include "td/protocol/packets/UpdateGameStatePacket.h"
 #include "td/protocol/packets/UpdateMoneyPacket.h"
@@ -134,10 +137,41 @@ void ServerGame::OnGameClose() {
 	m_Server->Restart();
 }
 
-void ServerGame::OnPlayerJoin(game::PlayerID id){
+void ServerGame::OnPlayerJoin(game::PlayerID id) {
 	if (m_GameState == game::GameState::Game)
 		BalanceTeams();
 }
 
+void ServerGame::OnPlayerLeave(game::PlayerID playerId) {
+	// temporary fix
+	
+	auto& mobList = GetWorld()->GetMobList();
+	for(std::size_t i = 0; i < mobList.size(); i++) {
+		auto mob = mobList.at(i);
+
+		if(mob->GetSender() == playerId) {
+			protocol::RemoveMobPacket packet(mob->GetMobID());
+			m_Server->BroadcastPacket(&packet);
+
+			mobList.erase(mobList.begin() + i);
+		}
+	}
+
+	auto& towerList = GetWorld()->GetTowers();
+	for(std::size_t i = 0; i < towerList.size(); i++) {
+		auto tower = towerList.at(i);
+
+		if(tower->GetBuilder() == playerId) {
+			protocol::RemoveTowerPacket packet(tower->GetID());
+			m_Server->BroadcastPacket(&packet);
+
+			towerList.erase(towerList.begin() + i);
+		}
+	}
+
+	protocol::PlayerLeavePacket packet(playerId);
+	m_Server->BroadcastPacket(&packet);
+}
+
 } // namespace game
 } // namespace td

src/td/game/World.cpp

@@ -123,6 +123,17 @@ void World::SpawnMobAt(MobID id, MobType type, std::uint8_t level, PlayerID send
 	GetMobNotifier().NotifyListeners(&MobListener::OnMobSpawn, mob.get());
 }
 
+MobPtr World::RemoveMob(MobID mobId) {
+	auto it = std::find_if(m_Mobs.begin(), m_Mobs.end(), [mobId](MobPtr mob) { return mob->GetMobID() == mobId;});
+	if (it == m_Mobs.end()) return nullptr;
+
+	MobPtr mob = *it;
+
+	m_Mobs.erase(it);
+
+	return mob;
+}
+
 TowerPtr World::PlaceTowerAt(TowerID id, TowerType type, std::int32_t x, std::int32_t y, PlayerID builder) {
 	TowerPtr tower = TowerFactory::CreateTower(type, id, x, y, builder);
 	m_Towers.push_back(tower);

src/td/protocol/PacketFactory.cpp

@@ -36,6 +36,7 @@ static std::map<PacketType, PacketCreator> packets = {
 	{PacketType::UpdateMobStates,       []() -> PacketPtr {return std::make_unique<UpdateMobStatesPacket>(); } },
 	{PacketType::PlayerBuyItem,         []() -> PacketPtr {return std::make_unique<PlayerBuyItemPacket>(); } },
 	{PacketType::PlayerBuyMobUpgrade,   []() -> PacketPtr {return std::make_unique<PlayerBuyMobUpgradePacket>(); } },
+	{PacketType::RemoveMob,           	[]() -> PacketPtr {return std::make_unique<RemoveMobPacket>(); } },
 };
 
 PacketPtr CreatePacket(PacketType type, DataBuffer& buffer) {

src/td/protocol/Protocol.cpp

@@ -39,6 +39,7 @@ REGISTER_DISPATCH_CLASS(UpdateCastleLifePacket)
 REGISTER_DISPATCH_CLASS(UpdateMobStatesPacket)
 REGISTER_DISPATCH_CLASS(PlayerBuyItemPacket)
 REGISTER_DISPATCH_CLASS(PlayerBuyMobUpgradePacket)
+REGISTER_DISPATCH_CLASS(RemoveMobPacket)
 
 } // namespace protocol
 } // namespace td

src/td/protocol/packets/RemoveMobPacket.cpp

@@ -0,0 +1,19 @@
+#include "td/protocol/packets/RemoveMobPacket.h"
+
+namespace td {
+namespace protocol {
+
+DataBuffer RemoveMobPacket::Serialize(bool packetID) const {
+	DataBuffer data;
+
+	WritePacketID(data, packetID);
+	data << m_MobID;
+	return data;
+}
+
+void RemoveMobPacket::Deserialize(DataBuffer& data) {
+	data >> m_MobID;
+}
+
+} // namespace protocol
+} // namespace td

xmake.lua

@@ -1,8 +1,9 @@
 add_rules("mode.debug", "mode.release")
 
 add_defines("TD_IMPL_OPENGL_LOADER_GLEW")
-add_requires("libsdl >= 2", "zlib", "glew")
+add_requires("libsdl2", "zlib", "glew")
 
+set_languages("c++17")
 
 target("TowerDefenseData")
     set_kind("static")
@@ -10,8 +11,6 @@ target("TowerDefenseData")
     add_includedirs("include")
     add_files("src/td/**.cpp")
 
-    set_languages("c++17")
-
     add_packages("zlib")
     
     add_links("pthread")
@@ -21,18 +20,7 @@ target("TowerDefenseData")
         add_links("ws2_32") -- link network stuff
     end
 
-    if is_mode("release") then
-        -- mark symbols visibility as hidden
-        set_symbols("hidden")
-        
-        -- strip all symbols
-        add_ldflags("-s")
-
-        set_warnings("all", "error")
-
-        set_optimize("fastest")
-
-    else -- debug stuff
+    if is_mode("debug") then
         if is_os("linux") then
             add_links("dw")
         end
@@ -75,7 +63,7 @@ target("TowerDefenseClient")
     add_files("src/ClientMain.cpp", "src/client/**.cpp")
     add_includedirs("include")
 
-    add_packages("libsdl", "glew", "opengl")
+    add_packages("libsdl2", "glew", "opengl")
 
     -- run windows program with wine on linux
     if is_host("linux") and is_os("windows") then