chore: bump verssion to alpha-0.1.0

include/game/BaseGame.h

@@ -19,7 +19,7 @@ typedef std::map<std::uint8_t, Player> PlayerList;
 class Game {
 protected:
     World* m_World;
-    std::array<Team, 2> m_Teams = { Team{TeamColor::Red}, Team{TeamColor::Blue} };
+    TeamList m_Teams = { Team{TeamColor::Red}, Team{TeamColor::Blue} };
     GameState m_GameState = GameState::Lobby;
     PlayerList m_Players;
 public:
@@ -46,8 +46,10 @@ public:
     const PlayerList& getPlayers() const { return m_Players; }
     PlayerList& getPlayers() { return m_Players; }
 
-    const Player& getPlayerById(PlayerID id) const { return m_Players.find(id)->second; }
-    Player& getPlayerById(PlayerID id) { return m_Players.find(id)->second; }
+    const Player* getPlayerById(PlayerID id) const;
+    Player* getPlayerById(PlayerID id);
+
+    const TeamList& getTeams() const { return m_Teams; }
 
 };
 

include/game/Mobs.h

@@ -4,6 +4,8 @@
 #include "Types.h"
 #include "Team.h"
 
+#include "misc/ObjectNotifier.h"
+
 #include <vector>
 #include <memory>
 
@@ -12,6 +14,8 @@
 namespace td {
 namespace game {
 
+struct WalkableTile;
+
 enum class EffectType : std::uint8_t {
     Slowness = 0,
     Stun,
@@ -69,7 +73,7 @@ public:
 struct EffectDuration {
     EffectType type;
     float duration; // in seconds
-    const Tower* tower; // the tower that gived the effect
+    Tower* tower; // the tower that gived the effect
 };
 
 const MobStats* getMobStats(MobType type, std::uint8_t level);
@@ -86,22 +90,24 @@ private:
     Direction m_Direction;
     std::vector<EffectDuration> m_Effects;
     const Tower* m_LastDamage;   // the last tower that damaged the mob
-    bool m_HasReachedCastle; // if true, no need to walk anymore
 
     utils::Timer m_EffectFireTimer;
     utils::Timer m_EffectPoisonTimer;
     utils::Timer m_EffectHealTimer;
 
+    TeamCastle* m_CastleTarget;
+    utils::CooldownTimer m_AttackTimer;
+
 public:
     Mob(MobID id, MobLevel level, PlayerID sender) : m_Sender(sender), m_Level(level),
-        m_HasReachedCastle(false), m_EffectFireTimer(1000), m_EffectPoisonTimer(1000),
-        m_EffectHealTimer(1000) {
+        m_EffectFireTimer(1000), m_EffectPoisonTimer(1000),
+        m_EffectHealTimer(1000), m_CastleTarget(nullptr), m_AttackTimer(1000) {
 
     }
 
     virtual MobType getType() const = 0;
 
-    virtual void tick(std::uint64_t delta);
+    virtual void tick(std::uint64_t delta, World* world);
 
     virtual bool OnDeath(World* world) { return true; }
 
@@ -114,16 +120,16 @@ public:
     bool isDead() const { return m_Health <= 0; }
     bool isAlive() const { return m_Health > 0; }
     const Tower* getLastDamageTower() { return m_LastDamage; }
-    bool hasReachedEnemyCastle() { return m_HasReachedCastle; }
+    bool hasReachedEnemyCastle() { return m_CastleTarget != nullptr; }
 
     void damage(float dmg, const Tower* damager) { m_Health = std::max(0.0f, m_Health - dmg); m_LastDamage = damager; }
     void heal(float heal) { m_Health = std::min(static_cast<float>(getStats()->getMaxLife()), m_Health + heal); }
-    void setMobReachedCastle() { m_HasReachedCastle = true; } // used when mob is in front of the castle
+    void setMobReachedCastle(TeamCastle* castle) { m_CastleTarget = castle; } // used when mob is in front of the castle
 
     bool isImmuneTo(TowerType type);
 
     bool isImmuneTo(EffectType type);
-    void addEffect(EffectType type, float durationSec, const Tower* tower);
+    void addEffect(EffectType type, float durationSec, Tower* tower);
     bool hasEffect(EffectType type);
 
     float getTileX() { return getCenterX() - static_cast<float>(static_cast<std::int32_t>(getCenterX())); } // returns a float between 0 and 1 excluded
@@ -137,7 +143,13 @@ protected:
         setSize(getStats()->getSize().x, getStats()->getSize().y);
     }
 private:
-    void updateEffects(std::uint64_t delta);
+    void updateEffects(std::uint64_t delta, World* world);
+    void attackCastle(std::uint64_t delta, World* world);
+    void move(std::uint64_t delta, World* world);
+    void walk(std::uint64_t delta, World* world);
+    void moveBack(const TeamCastle& castle, World* world);
+    void changeDirection(const WalkableTile& tile, World* world);
+    bool isTouchingCastle(const TeamCastle& castle) const;
     EffectDuration& getEffect(EffectType type);
 };
 
@@ -218,6 +230,18 @@ MobPtr createMob(MobID id, MobType type, std::uint8_t level, PlayerID sender);
 std::string getMobName(MobType type);
 }
 
+class MobListener {
+public:
+    virtual void OnMobSpawn(Mob* mob) {}
+    virtual void OnMobDie(Mob* mob) {}
+
+    virtual void OnMobDamage(Mob* target, float damage, Tower* damager) {}
+
+    virtual void OnMobTouchCastle(Mob* damager, TeamCastle* enemyCastle) {}
+    virtual void OnMobCastleDamage(Mob* damager, TeamCastle* enemyCastle, float damage) {}
+};
+
+typedef utils::ObjectNotifier<MobListener> MobNotifier;
 
 } // namespace game
 } // namespace td

include/game/Team.h

@@ -23,7 +23,7 @@ class Spawn : public utils::shape::Rectangle {
 private:
     Direction m_Direction;
 public:
-    Spawn(){
+    Spawn() {
         setWidth(5);
         setHeight(5);
     }
@@ -33,19 +33,34 @@ public:
     void setDirection(Direction direction) { m_Direction = direction; }
 };
 
-struct TeamCastle : public utils::shape::Rectangle{
+class Team;
+
+class TeamCastle : public utils::shape::Rectangle {
 private:
+    const Team* m_Team;
     float m_Life;
 public:
-    TeamCastle() : m_Life(1000) {
+    static constexpr int CastleMaxLife = 1000;
+
+    TeamCastle(const Team* team) : m_Team(team), m_Life(CastleMaxLife) {
         setWidth(5);
         setHeight(5);
     }
 
+    TeamCastle() : TeamCastle(nullptr) {}
+
     float getLife() const { return m_Life; }
 
+    const Team* getTeam() const { return m_Team; }
+    void setTeam(const Team* team) { m_Team = team; }
+
     void setLife(float life) { m_Life = life; }
     void damage(float damage) { m_Life = std::max(0.0f, m_Life - damage); }
+
+    void setShape(utils::shape::Rectangle rect) {
+        setCenter(rect.getCenter());
+        setSize(rect.getSize());
+    }
 };
 
 class Team {
@@ -71,5 +86,7 @@ public:
     std::uint8_t getPlayerCount() const;
 };
 
+typedef std::array<Team, 2> TeamList;
+
 } // namespace game
 } // namespace td

include/game/Towers.h

@@ -164,6 +164,7 @@ public:
     ArcherTower(TowerID id, std::uint16_t x, std::uint16_t y, PlayerID builder) : LittleTower(id, getType(), x, y, builder) {}
 
     constexpr static float ExplosionRadius = 1.5f;
+    constexpr static float FireDurationSec = 10.0f;
 
     virtual TowerType getType() const { return TowerType::Archer; }
     virtual void tick(std::uint64_t delta, World* world);

include/game/World.h

@@ -10,8 +10,6 @@
 #include "Mobs.h"
 #include "Team.h"
 
-#include "misc/ObjectNotifier.h"
-
 namespace td {
 namespace game {
 typedef std::pair<std::int16_t, std::int16_t> ChunkCoord;
@@ -118,21 +116,20 @@ typedef std::vector<TowerPtr> TowerList;
 
 class WorldListener {
 public:
-    WorldListener(){}
+    WorldListener() {}
 
-    virtual void OnArcherTowerShot(MobPtr target, ArcherTower* shooter){}
+    virtual void OnTowerAdd(TowerPtr tower) {}
+    virtual void OnTowerRemove(TowerPtr tower) {}
 
-    virtual void OnArrowShot(MobPtr target, Tower* shooter){}
-    virtual void OnExplosion(utils::shape::Circle explosion, float centerDamage, Tower* shooter){}
+    virtual void OnArcherTowerShot(MobPtr target, ArcherTower* shooter) {}
 
-    virtual void OnMobDamage(MobPtr target, float damage, Tower* damager){}
-
-    virtual void OnMobDead(MobPtr mob){}
+    virtual void OnArrowShot(MobPtr target, bool fire, Tower* shooter) {}
+    virtual void OnExplosion(utils::shape::Circle explosion, float centerDamage, Tower* shooter) {}
 };
 
 typedef utils::ObjectNotifier<WorldListener> WorldNotifier;
 
-class World : public WorldNotifier, public WorldListener{
+class World : public WorldListener, public MobListener {
 protected:
     TowerTileColorPalette m_TowerPlacePalette;
     Color m_WalkablePalette;
@@ -149,6 +146,9 @@ protected:
     TowerList m_Towers;
 
     Game* m_Game;
+
+    WorldNotifier m_WorldNotifier;
+    MobNotifier m_MobNotifier;
 public:
     World(Game* game);
 
@@ -165,6 +165,7 @@ public:
     void spawnMobAt(MobID id, MobType type, std::uint8_t level, PlayerID sender, float x, float y, Direction dir);
 
     TowerPtr placeTowerAt(TowerID id, TowerType type, std::int32_t x, std::int32_t y, PlayerID builder);
+    TowerPtr removeTower(TowerID id);
 
     TilePtr getTile(std::int32_t x, std::int32_t y) const;
 
@@ -204,23 +205,30 @@ public:
     Team& getTeam(TeamColor team);
     const Team& getTeam(TeamColor team) const;
 
+    const TeamList& getTeams() const;
+
     const TowerList& getTowers() const { return m_Towers; };
     TowerPtr getTowerById(TowerID tower);
 
+    const Player* getPlayerById(PlayerID id) const;
+
+    WorldNotifier& getWorldNotifier() { return m_WorldNotifier; }
+    MobNotifier& getMobNotifier() { return m_MobNotifier; }
+
     // WorldListener
 
     virtual void OnArcherTowerShot(MobPtr target, ArcherTower* shooter);
 
-    virtual void OnArrowShot(MobPtr target, Tower* shooter);
+    virtual void OnArrowShot(MobPtr target, bool fire, Tower* shooter);
     virtual void OnExplosion(utils::shape::Circle explosion, float centerDamage, Tower* shooter);
 
-    virtual void OnMobDamage(MobPtr target, float damage, Tower* source);
+    // MobListener
+
+    virtual void OnMobDamage(Mob* target, float damage, Tower* source);
+    virtual void OnMobDie(Mob* mob);
+    virtual void OnMobCastleDamage(Mob* damager, TeamCastle* enemyCastle, float damage);
+
 private:
-    void moveMobs(std::uint64_t delta);
-    void moveMob(MobPtr mob, std::uint64_t delta);
-    void moveBackMob(MobPtr mob, const TeamCastle& castle);
-    void changeMobDirection(MobPtr mob, WalkableTilePtr tile);
-    bool isMobTouchingCastle(MobPtr mob, const TeamCastle& castle) const;
     void tickMobs(std::uint64_t delta);
     void cleanDeadMobs();
 };

include/game/client/Client.h

@@ -44,6 +44,7 @@ public:
     void sendMobs(const std::vector<protocol::MobSend>& mobSends);
     void placeTower(game::TowerType type, const glm::vec2& position);
     void upgradeTower(game::TowerID tower, game::TowerLevel level);
+    void removeTower(game::TowerID tower);
 };
 
 } // namespace client

include/game/client/ClientGame.h

@@ -37,6 +37,7 @@ public:
     Client* getClient() const { return m_Client; }
 
     render::Renderer* getRenderer() const { return m_Renderer; }
+    WorldClient& getWorld() { return m_WorldClient; }
 
     virtual void HandlePacket(const protocol::ConnexionInfoPacket* packet);
     virtual void HandlePacket(const protocol::PlayerJoinPacket* packet);
@@ -48,7 +49,7 @@ public:
     virtual void HandlePacket(const protocol::UpdateMoneyPacket* packet);
     virtual void HandlePacket(const protocol::DisconnectPacket* packet);
     virtual void HandlePacket(const protocol::WorldDataPacket* packet);
-    virtual void HandlePacket(const protocol::WorldAddTowerPacket* packet);
+
 };
 
 } // namespace client

include/game/client/WorldClient.h

@@ -14,12 +14,13 @@ private:
 public:
     WorldClient(ClientGame* game);
 
-    virtual void HandlePacket(const protocol::WorldBeginDataPacket* packet) override;
-    virtual void HandlePacket(const protocol::WorldDataPacket* packet) override;
-    virtual void HandlePacket(const protocol::SpawnMobPacket* packet) override;
-    virtual void HandlePacket(const protocol::UpgradeTowerPacket* packet) override;
+    virtual void HandlePacket(const protocol::WorldBeginDataPacket* packet);
+    virtual void HandlePacket(const protocol::WorldDataPacket* packet);
+    virtual void HandlePacket(const protocol::SpawnMobPacket* packet);
+    virtual void HandlePacket(const protocol::UpgradeTowerPacket* packet);
+    virtual void HandlePacket(const protocol::WorldAddTowerPacket* packet);
+    virtual void HandlePacket(const protocol::RemoveTowerPacket* packet);
 
-    virtual void OnArrowShot(game::MobPtr target, game::Tower* shooter) override;
 };
 
 } // namespace client   

include/game/server/ServerConnexion.h

@@ -40,6 +40,7 @@ public:
     virtual void HandlePacket(const protocol::PlaceTowerPacket* packet);
     virtual void HandlePacket(const protocol::SendMobsPacket* packet);
     virtual void HandlePacket(const protocol::UpgradeTowerPacket* packet);
+    virtual void HandlePacket(const protocol::RemoveTowerPacket* packet);
 
     std::uint8_t getID() const { return m_ID; }
     const game::Player* getPlayer() const { return m_Player; }

include/game/server/ServerWorld.h

@@ -14,12 +14,13 @@ private:
     game::TowerID m_CurrentTowerID;
     Server* m_Server;
 public:
+    static constexpr float MobSpawnBorder = 0.01f;
+
     ServerWorld(Server* server, ServerGame* game);
 
     void spawnMobs(game::MobType type, std::uint8_t level, game::PlayerID sender, std::uint8_t count);
     game::TowerPtr placeTowerAt(game::TowerType type, std::int32_t x, std::int32_t y, game::PlayerID builder);
 
-    virtual void OnArrowShot(game::MobPtr target, game::Tower* shooter) override;
 };
 
 } // namespace server  

include/misc/Shapes.h

@@ -47,6 +47,9 @@ public:
     void setCenterY(float y) { m_Center.setY(y); }
 
     void setSize(float width, float height) { setWidth(width); setHeight(height); }
+    void setSize(Point size) { setSize(size.getX(), size.getY()); }
+    Point getSize() { return { m_Width, m_Height }; }
+
     void setWidth(float width) { m_Width = width; }
     void setHeight(float height) { m_Height = height; }
 

include/misc/Time.h

@@ -53,7 +53,7 @@ public:
     std::uint64_t getInterval() const { return m_Interval; }
 };
 
-// utililty class to call function at regular period of time with a cooldown (used for towers)
+// utililty class to call function at regular period of time with a cooldown (used for towers and mobs )
 class CooldownTimer {
 private:
     std::uint64_t m_Cooldown; // in millis

include/protocol/PacketHandler.h

@@ -35,7 +35,7 @@ public:
     virtual void HandlePacket(const SpawnMobPacket* packet) {}
     virtual void HandlePacket(const PlaceTowerPacket* packet) {}
     virtual void HandlePacket(const WorldAddTowerPacket* packet) {}
-    virtual void HandlePacket(const WorldRemoveTowerPacket* packet) {}
+    virtual void HandlePacket(const RemoveTowerPacket* packet) {}
     virtual void HandlePacket(const SendMobsPacket* packet) {}
     virtual void HandlePacket(const UpgradeTowerPacket* packet) {}
 };

include/protocol/Protocol.h

@@ -33,12 +33,12 @@ enum class PacketType : std::uint8_t {
     UpdatePlayerTeam,
     ServerTps,
     WorldAddTower,
-    WorldRemoveTower,
 
     // client <--> server
     KeepAlive,
     Disconnect,
     UpgradeTower,
+    RemoveTower,
 };
 
 struct WorldHeader {
@@ -477,13 +477,13 @@ public:
     virtual PacketType getType() const { return PacketType::WorldAddTower; }
 };
 
-class WorldRemoveTowerPacket : public Packet {
+class RemoveTowerPacket : public Packet {
 private:
     game::TowerID m_TowerID;
 public:
-    WorldRemoveTowerPacket() {}
-    WorldRemoveTowerPacket(game::TowerID id) : m_TowerID(id) {}
-    virtual ~WorldRemoveTowerPacket() {}
+    RemoveTowerPacket() {}
+    RemoveTowerPacket(game::TowerID id) : m_TowerID(id) {}
+    virtual ~RemoveTowerPacket() {}
 
     virtual DataBuffer Serialize() const;
     virtual void Deserialize(DataBuffer& data);
@@ -491,7 +491,7 @@ public:
 
     game::TowerID getTowerID() const { return m_TowerID; }
 
-    virtual PacketType getType() const { return PacketType::WorldRemoveTower; }
+    virtual PacketType getType() const { return PacketType::RemoveTower; }
 };
 
 class UpgradeTowerPacket : public Packet {

include/render/VertexCache.h

@@ -12,15 +12,19 @@ namespace render {
 class VertexCache {
 
     typedef std::vector<float> Vector;
-    typedef std::pair<Vector::iterator, Vector::iterator> ElementsIndex;
-    typedef std::pair<ElementsIndex, ElementsIndex> DataIndex;
+
+    struct DataIndex {
+        Vector position;
+        Vector color;
+    };
 
 private:
-    Vector m_Positions;
-    Vector m_Colors;
+    std::size_t m_VertexCount;
     std::unordered_map<std::uint64_t, DataIndex> m_Indexes;
     std::unique_ptr<GL::VertexArray> m_VertexArray;
 public:
+    VertexCache() : m_VertexCount(0) {}
+
     void addData(std::uint64_t index, std::vector<float> positions, std::vector<float> colors);
     void removeData(std::uint64_t index);
     void clear();

include/render/WorldRenderer.h

@@ -7,6 +7,7 @@
 
 #include "render/gui/TowerPlacePopup.h"
 #include "render/gui/MobTooltip.h"
+#include "render/gui/CastleTooltip.h"
 
 #include "render/gui/imgui/imgui.h"
 
@@ -23,7 +24,7 @@ class ClientGame;
 
 namespace render {
 
-class WorldRenderer {
+class WorldRenderer : public game::WorldListener {
 private:
     client::ClientGame* m_Client;
     Renderer* m_Renderer;
@@ -40,15 +41,13 @@ private:
 
     std::unique_ptr<gui::TowerPlacePopup> m_TowerPlacePopup;
     std::unique_ptr<gui::MobTooltip> m_MobTooltip;
+    std::unique_ptr<gui::CastleTooltip> m_CastleTooltip;
 public:
     WorldRenderer(game::World* world, client::ClientGame* client);
     ~WorldRenderer();
 
     void loadModels();
 
-    void addTower(game::TowerPtr tower);
-    void removeTower(game::TowerPtr tower);
-
     static ImVec4 getImGuiTeamColor(game::TeamColor color);
 
     void update();
@@ -58,6 +57,11 @@ public:
 
     void moveCam(float relativeX, float relativeY, float aspectRatio);
     void changeZoom(float zoom);
+
+    // WorldListener
+
+    virtual void OnTowerAdd(game::TowerPtr tower);
+    virtual void OnTowerRemove(game::TowerPtr tower);
 private:
     void click();
     void renderWorld() const;
@@ -67,8 +71,12 @@ private:
     void renderPopups();
     void renderTowerUpgradePopup();
     void renderMobTooltip() const;
+    void renderCastleTooltip() const;
     void detectClick();
     void detectMobHovering() const;
+    void detectCastleHovering() const;
+    void renderTooltips() const;
+    void removeTower();
     glm::vec2 getCursorWorldPos() const;
     glm::vec2 getClickWorldPos() const;
 

include/render/gui/CastleTooltip.h

@@ -0,0 +1,27 @@
+#pragma once
+
+#include "GuiWidget.h"
+
+namespace td {
+
+namespace game {
+
+class TeamCastle;
+
+} // namespace game
+
+namespace gui {
+
+class CastleTooltip : public GuiWidget {
+private:
+    const game::TeamCastle* m_Castle;
+public:
+    CastleTooltip(client::Client* client);
+
+    virtual void render();
+
+    void setCastle(const game::TeamCastle* castle) { m_Castle = castle; }
+};
+
+} // namespace gui
+} // namespace td

include/updater/Updater.h

@@ -2,9 +2,7 @@
 
 #include "misc/DataBuffer.h"
 
-#include <ctime>
-
-#define TD_VERSION "alpha-0.0.3"
+#define TD_VERSION "alpha-0.1.0"
 
 namespace td {
 namespace utils {

src/TowerDefense.cpp

@@ -6,14 +6,26 @@
 // Description : Hello World in C++, Ansi-style
 //============================================================================
 
+#if !defined(NDEBUG) && !defined(_WIN32)
+#define BACKWARD_HAS_UNWIND 1
+#define BACKWARD_HAS_DW 1
+#endif
+
 #include "window/Display.h"
 #include "updater/Updater.h"
+#include "misc/Backward.hpp"
 
 #ifdef __ANDROID__
 extern "C"
 #endif
 
 int main(int argc, const char* args[]) {
+    #if !defined(NDEBUG)
+    // setup signal handling
+    backward::SignalHandling sh;
+    #endif
+
+    // remove the outdated binary
     td::utils::Updater::removeOldFile();
 
     Display::create();

src/game/BaseGame.cpp

@@ -17,5 +17,21 @@ void Game::tick(std::uint64_t delta) {
     }
 }
 
+Player* Game::getPlayerById(PlayerID id) {
+    auto it = m_Players.find(id);
+
+    if (it == m_Players.end()) return nullptr;
+
+    return &it->second;
+}
+
+const Player* Game::getPlayerById(PlayerID id) const {
+    auto it = m_Players.find(id);
+
+    if (it == m_Players.end()) return nullptr;
+
+    return &it->second;
+}
+
 } // namespace game 
 } // namespace td

src/game/Mobs.cpp

@@ -1,4 +1,6 @@
 #include "game/Mobs.h"
+#include "game/Player.h"
+#include "game/World.h"
 
 #include <map>
 #include <algorithm>
@@ -18,7 +20,7 @@ EffectDuration& Mob::getEffect(EffectType effectType) {
     return *std::find_if(m_Effects.begin(), m_Effects.end(), [&effectType](EffectDuration effect) { return effect.type == effectType;});
 }
 
-void Mob::addEffect(EffectType effectType, float durationSec, const Tower* tower) {
+void Mob::addEffect(EffectType effectType, float durationSec, Tower* tower) {
     if (isImmuneTo(effectType))
         return;
     if (hasEffect(effectType)) {
@@ -30,11 +32,176 @@ void Mob::addEffect(EffectType effectType, float durationSec, const Tower* tower
     }
 }
 
-void Mob::tick(std::uint64_t delta) {
-    updateEffects(delta);
+void Mob::attackCastle(std::uint64_t delta, World* world) {
+    if(!hasReachedEnemyCastle()) return;
+    
+    if (m_AttackTimer.update(delta)) {
+        world->getMobNotifier().notifyListeners(&MobListener::OnMobCastleDamage, this, m_CastleTarget, getStats()->getDamage());
+        m_AttackTimer.applyCooldown();
+    }
 }
 
-void Mob::updateEffects(std::uint64_t delta) {
+void Mob::walk(std::uint64_t delta, World* world) {
+    float mobWalkSpeed = getStats()->getMovementSpeed();
+
+    float walkAmount = mobWalkSpeed * ((float)delta / 1000.0f);
+
+    if (hasEffect(EffectType::Slowness))
+        walkAmount *= 0.70; // walk 30% slower
+
+    switch (getDirection()) {
+    case Direction::NegativeX: {
+        setCenterX(getCenterX() - walkAmount);
+        break;
+    }
+    case Direction::PositiveX: {
+        setCenterX(getCenterX() + walkAmount);
+        break;
+    }
+    case Direction::NegativeY: {
+        setCenterY(getCenterY() - walkAmount);
+        break;
+    }
+    case Direction::PositiveY: {
+        setCenterY(getCenterY() + walkAmount);
+        break;
+    }
+    }
+}
+
+void Mob::move(std::uint64_t delta, World* world) {
+    TilePtr tile = world->getTile(getCenter().getX(), getCenter().getY());
+
+    if (tile != nullptr && tile->getType() == TileType::Walk) {
+        WalkableTilePtr walkTile = std::static_pointer_cast<WalkableTile>(tile);
+        changeDirection(*walkTile, world);
+    }
+
+    if (hasReachedEnemyCastle()) return;
+
+    walk(delta, world);
+
+    TeamColor mobTeam = world->getPlayerById(getSender())->getTeamColor();
+
+    TeamCastle* enemyCastle = nullptr;
+
+    if (mobTeam == TeamColor::Red) {
+        enemyCastle = &world->getBlueTeam().getCastle();
+    } else if (mobTeam == TeamColor::Blue) {
+        enemyCastle = &world->getRedTeam().getCastle();
+    }
+
+    if (isTouchingCastle(*enemyCastle)) {
+        moveBack(*enemyCastle, world);
+        setMobReachedCastle(enemyCastle);
+
+        world->getMobNotifier().notifyListeners(&MobListener::OnMobTouchCastle, this, enemyCastle);
+    }
+}
+
+void Mob::moveBack(const TeamCastle& enemyCastle, World* world) {
+    switch (getDirection()) {
+    case Direction::NegativeX: {
+        setCenterX(enemyCastle.getBottomRight().getX() + getWidth() / 2.0f);
+        break;
+    }
+    case Direction::PositiveX: {
+        setCenterX(enemyCastle.getTopLeft().getX() - getWidth() / 2.0f);
+        break;
+    }
+    case Direction::NegativeY: {
+        setCenterY(enemyCastle.getBottomRight().getY() + getHeight() / 2.0f);
+        break;
+    }
+    case Direction::PositiveY: {
+        setCenterY(enemyCastle.getTopLeft().getY() - getHeight() / 2.0f);
+        break;
+    }
+    }
+}
+
+void Mob::changeDirection(const WalkableTile& tile, World* world) {
+    if (getDirection() == tile.direction) return;
+
+    float tileX = static_cast<float>(static_cast<std::int32_t>(getCenterX()));
+    float tileY = static_cast<float>(static_cast<std::int32_t>(getCenterY()));
+
+    switch (getDirection()) {
+
+    case Direction::PositiveY: {
+        if (tile.direction == Direction::NegativeX) {
+            if (getTileY() > getTileX()) {
+                setCenterY(tileY + getTileX());
+                setDirection(tile.direction);
+            }
+        } else { // tile->direction = Direction::PositiveX
+            if (getTileY() > 1 - getTileX()) {
+                setCenterY(tileY + (1 - getTileX()));
+                setDirection(tile.direction);
+            }
+        }
+        return;
+    }
+
+    case Direction::NegativeY: {
+        if (tile.direction == Direction::PositiveX) {
+            if (getTileY() < getTileX()) {
+                setCenterY(tileY + getTileX());
+                setDirection(tile.direction);
+            }
+        } else { // tile.direction = Direction::NegativeX
+            if (getTileY() < 1 - getTileX()) {
+                setCenterY(tileY + (1 - getTileX()));
+                setDirection(tile.direction);
+            }
+        }
+        return;
+    }
+
+    case Direction::PositiveX: {
+        if (tile.direction == Direction::NegativeY) {
+            if (getTileX() > getTileY()) {
+                setCenterX(tileX + getTileY());
+                setDirection(tile.direction);
+            }
+        } else { // tile.direction = Direction::PositiveY
+            if (getTileX() > 1 - getTileY()) {
+                setCenterX(tileX + (1 - getTileY()));
+                setDirection(tile.direction);
+            }
+        }
+        return;
+    }
+
+    case Direction::NegativeX: {
+        if (tile.direction == Direction::PositiveY) {
+            if (getTileX() < getTileY()) {
+                setCenterX(tileX + getTileY());
+                setDirection(tile.direction);
+            }
+        } else { // tile.direction = Direction::NegativeY
+            if (getTileX() < 1 - getTileY()) {
+                setCenterX(tileX + (1 - getTileY()));
+                setDirection(tile.direction);
+            }
+        }
+        return;
+    }
+
+    }
+}
+
+bool Mob::isTouchingCastle(const TeamCastle& enemyCastle) const {
+    return enemyCastle.collidesWith(*this);
+}
+
+void Mob::tick(std::uint64_t delta, World* world) {
+    updateEffects(delta, world);
+    move(delta, world);
+    attackCastle(delta, world);
+}
+
+void Mob::updateEffects(std::uint64_t delta, World* world) {
     float deltaSec = (float)delta / 1000.0f;
     for (std::size_t i = 0; i < m_Effects.size(); i++) {
         EffectDuration& effect = m_Effects[i];
@@ -63,12 +230,12 @@ void Mob::updateEffects(std::uint64_t delta) {
     }
     if (hasEffect(EffectType::Fire)) {
         if (m_EffectFireTimer.update(delta)) {
-            damage(3, getEffect(EffectType::Fire).tower);
+            world->getMobNotifier().notifyListeners(&MobListener::OnMobDamage, this, 3.0f, getEffect(EffectType::Fire).tower);
         }
     }
     if (hasEffect(EffectType::Poison)) {
         if (m_EffectPoisonTimer.update(delta)) {
-            damage(1, getEffect(EffectType::Poison).tower);
+            world->getMobNotifier().notifyListeners(&MobListener::OnMobDamage, this, 1.0f, getEffect(EffectType::Poison).tower);
         }
     }
     if (hasEffect(EffectType::Heal)) {

src/game/Team.cpp

@@ -5,7 +5,7 @@
 namespace td {
 namespace game {
 
-Team::Team(TeamColor color) : m_Color(color) {}
+Team::Team(TeamColor color) : m_Color(color), m_TeamCastle(this) {}
 
 void Team::addPlayer(Player* newPlayer) {
     m_Players.push_back(newPlayer);

src/game/Towers.cpp

@@ -213,7 +213,7 @@ void ArcherTower::tick(std::uint64_t delta, World* world) {
         std::uint8_t arrows = explosiveArrows ? 2 : getLevel().getLevel();
         for (MobPtr mob : world->getMobList()) {
             if (isMobInRange(mob)) {
-                world->notifyListeners(&WorldListener::OnArcherTowerShot, mob, this);
+                world->getWorldNotifier().notifyListeners(&WorldListener::OnArcherTowerShot, mob, this);
                 m_Timer.applyCooldown();
                 arrowsShot++;
                 if (arrowsShot >= arrows)
@@ -229,8 +229,8 @@ void IceTower::tick(std::uint64_t delta, World* world) {
         for (MobPtr mob : world->getMobList()) {
             if (isMobInRange(mob)) {
                 mob->addEffect(EffectType::Slowness, 1, this);    // slowness for 1s every second
-                if(damage > 0)
-                    world->notifyListeners(&WorldListener::OnMobDamage, mob, damage, this);
+                if (damage > 0)
+                    world->getMobNotifier().notifyListeners(&MobListener::OnMobDamage, mob.get(), damage, this);
                 m_Timer.applyCooldown();
             }
         }
@@ -253,7 +253,7 @@ void PoisonTower::tick(std::uint64_t delta, World* world) {
         for (MobPtr mob : world->getMobList()) {
             if (isMobInRange(mob)) {
                 if (getLevel().getPath() == TowerPath::Bottom) {
-                    world->notifyListeners(&WorldListener::OnMobDamage, mob, getStats()->getDamage(), this);
+                    world->getMobNotifier().notifyListeners(&MobListener::OnMobDamage, mob.get(), getStats()->getDamage(), this);
                 } else {
                     float durationSec;
                     switch (getLevel().getLevel()) {

src/game/World.cpp

@@ -13,7 +13,8 @@ namespace td {
 namespace game {
 
 World::World(Game* game) : m_Game(game) {
-    bindListener(this);
+    getWorldNotifier().bindListener(this);
+    getMobNotifier().bindListener(this);
 }
 
 TilePtr World::getTile(std::int32_t x, std::int32_t y) const {
@@ -43,7 +44,10 @@ bool World::loadMap(const protocol::WorldBeginDataPacket* worldHeader) {
     m_SpawnColorPalette = worldHeader->getSpawnPalette();
 
     getRedTeam().getCastle() = worldHeader->getRedCastle();
+    getRedTeam().getCastle().setTeam(&getRedTeam());
+
     getBlueTeam().getCastle() = worldHeader->getBlueCastle();
+    getBlueTeam().getCastle().setTeam(&getBlueTeam());
 
     m_TilePalette = worldHeader->getTilePalette();
 
@@ -101,7 +105,6 @@ bool World::saveMap(const std::string& fileName) const {
 }
 
 void World::tick(std::uint64_t delta) {
-    moveMobs(delta);
     tickMobs(delta);
     for (TowerPtr tower : m_Towers) {
         tower->tick(delta, this);
@@ -114,6 +117,7 @@ void World::spawnMobAt(MobID id, MobType type, std::uint8_t level, PlayerID send
     mob->setCenter({ x, y });
     mob->setDirection(dir);
     m_Mobs.push_back(mob);
+    getMobNotifier().notifyListeners(&MobListener::OnMobSpawn, mob.get());
 }
 
 TowerPtr World::placeTowerAt(TowerID id, TowerType type, std::int32_t x, std::int32_t y, PlayerID builder) {
@@ -122,163 +126,20 @@ TowerPtr World::placeTowerAt(TowerID id, TowerType type, std::int32_t x, std::in
     return tower;
 }
 
+TowerPtr World::removeTower(TowerID towerId) {
+    auto it = std::find_if(m_Towers.begin(), m_Towers.end(), [towerId](TowerPtr tower) { return tower->getID() == towerId;});
+    if (it == m_Towers.end()) return nullptr;
+
+    TowerPtr tower = *it;
+
+    m_Towers.erase(it);
+
+    return tower;
+}
+
 void World::tickMobs(std::uint64_t delta) {
     for (MobPtr mob : m_Mobs) {
-        mob->tick(delta);
-    }
-}
-
-void World::changeMobDirection(MobPtr mob, WalkableTilePtr tile) {
-    if (mob->getDirection() == tile->direction) return;
-
-    float tileX = static_cast<float>(static_cast<std::int32_t>(mob->getCenterX()));
-    float tileY = static_cast<float>(static_cast<std::int32_t>(mob->getCenterY()));
-
-    switch (mob->getDirection()) {
-
-    case Direction::PositiveY: {
-        if (tile->direction == Direction::NegativeX) {
-            if (mob->getTileY() > mob->getTileX()) {
-                mob->setCenterY(tileY + mob->getTileX());
-                mob->setDirection(tile->direction);
-            }
-        } else { // tile->direction = Direction::PositiveX
-            if (mob->getTileY() > 1 - mob->getTileX()) {
-                mob->setCenterY(tileY + (1 - mob->getTileX()));
-                mob->setDirection(tile->direction);
-            }
-        }
-        return;
-    }
-
-    case Direction::NegativeY: {
-        if (tile->direction == Direction::PositiveX) {
-            if (mob->getTileY() < mob->getTileX()) {
-                mob->setCenterY(tileY + mob->getTileX());
-                mob->setDirection(tile->direction);
-            }
-        } else { // tile->direction = Direction::NegativeX
-            if (mob->getTileY() < 1 - mob->getTileX()) {
-                mob->setCenterY(tileY + (1 - mob->getTileX()));
-                mob->setDirection(tile->direction);
-            }
-        }
-        return;
-    }
-
-    case Direction::PositiveX: {
-        if (tile->direction == Direction::NegativeY) {
-            if (mob->getTileX() > mob->getTileY()) {
-                mob->setCenterX(tileX + mob->getTileY());
-                mob->setDirection(tile->direction);
-            }
-        } else { // tile->direction = Direction::PositiveY
-            if (mob->getTileX() > 1 - mob->getTileY()) {
-                mob->setCenterX(tileX + (1 - mob->getTileY()));
-                mob->setDirection(tile->direction);
-            }
-        }
-        return;
-    }
-
-    case Direction::NegativeX: {
-        if (tile->direction == Direction::PositiveY) {
-            if (mob->getTileX() < mob->getTileY()) {
-                mob->setCenterX(tileX + mob->getTileY());
-                mob->setDirection(tile->direction);
-            }
-        } else { // tile->direction = Direction::NegativeY
-            if (mob->getTileX() < 1 - mob->getTileY()) {
-                mob->setCenterX(tileX + (1 - mob->getTileY()));
-                mob->setDirection(tile->direction);
-            }
-        }
-        return;
-    }
-
-    }
-}
-
-void World::moveMobs(std::uint64_t delta) {
-    for (MobPtr mob : m_Mobs) {
-        TilePtr tile = getTile(mob->getCenter().getX(), mob->getCenter().getY());
-
-        if (tile != nullptr && tile->getType() == TileType::Walk) {
-            WalkableTilePtr walkTile = std::static_pointer_cast<WalkableTile>(tile);
-            changeMobDirection(mob, walkTile);
-        }
-
-        if (mob->hasReachedEnemyCastle()) continue;
-
-        moveMob(mob, delta);
-
-        TeamColor mobTeam = m_Game->getPlayerById(mob->getSender()).getTeamColor();
-
-        const TeamCastle* enemyCastle = nullptr;
-
-        if (mobTeam == TeamColor::Red) {
-            enemyCastle = &getBlueTeam().getCastle();
-        } else if (mobTeam == TeamColor::Blue) {
-            enemyCastle = &getRedTeam().getCastle();
-        }
-
-        if (isMobTouchingCastle(mob, *enemyCastle)) {
-            moveBackMob(mob, *enemyCastle);
-            mob->setMobReachedCastle();
-        }
-    }
-}
-
-void World::moveMob(MobPtr mob, std::uint64_t delta) {
-    float mobWalkSpeed = mob->getStats()->getMovementSpeed();
-
-    float walkAmount = mobWalkSpeed * ((float)delta / 1000.0f);
-
-    if (mob->hasEffect(EffectType::Slowness))
-        walkAmount *= 0.70; // walk 30% slower
-
-    switch (mob->getDirection()) {
-    case Direction::NegativeX: {
-        mob->setCenterX(mob->getCenterX() - walkAmount);
-        break;
-    }
-    case Direction::PositiveX: {
-        mob->setCenterX(mob->getCenterX() + walkAmount);
-        break;
-    }
-    case Direction::NegativeY: {
-        mob->setCenterY(mob->getCenterY() - walkAmount);
-        break;
-    }
-    case Direction::PositiveY: {
-        mob->setCenterY(mob->getCenterY() + walkAmount);
-        break;
-    }
-    }
-}
-
-bool World::isMobTouchingCastle(MobPtr mob, const TeamCastle& enemyCastle) const {
-    return enemyCastle.collidesWith(*mob);
-}
-
-void World::moveBackMob(MobPtr mob, const TeamCastle& enemyCastle) {
-    switch (mob->getDirection()) {
-    case Direction::NegativeX: {
-        mob->setCenterX(enemyCastle.getBottomRight().getX() + mob->getWidth() / 2.0f);
-        break;
-    }
-    case Direction::PositiveX: {
-        mob->setCenterX(enemyCastle.getTopLeft().getX() - mob->getWidth() / 2.0f);
-        break;
-    }
-    case Direction::NegativeY: {
-        mob->setCenterY(enemyCastle.getBottomRight().getY() + mob->getHeight() / 2.0f);
-        break;
-    }
-    case Direction::PositiveY: {
-        mob->setCenterY(enemyCastle.getTopLeft().getY() - mob->getHeight() / 2.0f);
-        break;
-    }
+        mob->tick(delta, this);
     }
 }
 
@@ -357,22 +218,25 @@ bool World::CanPlaceBigTower(const glm::vec2& worldPos, PlayerID playerID) const
     return false;
 }
 
+void World::OnMobDie(Mob* mob) {
+    if (mob->OnDeath(this)) { // check if the mob is actually dead (slimes ...)
+        //reward players
+        Player* sender = m_Game->getPlayerById(mob->getSender());
+        sender->addExp(mob->getStats()->getExpReward());
+
+        Player* killer = m_Game->getPlayerById(mob->getLastDamageTower()->getBuilder());
+        killer->addGold(mob->getStats()->getMoneyCost());
+    }
+}
+
 void World::cleanDeadMobs() {
+    // safely remove mobs when unused
     for (std::size_t i = 0; i < m_Mobs.size(); i++) {
         MobPtr mob = m_Mobs[i];
         if (mob->isDead()) {
-            if (mob->OnDeath(this)) {
-                //reward players
-                Player& sender = m_Game->getPlayerById(mob->getSender());
-                sender.addExp(mob->getStats()->getExpReward());
-
-                Player& killer = m_Game->getPlayerById(mob->getLastDamageTower()->getBuilder());
-                killer.addGold(mob->getStats()->getMoneyCost());
-
             m_Mobs.erase(m_Mobs.begin() + i);
         }
     }
-    }
 }
 
 TowerPtr World::getTower(const glm::vec2& position) const {
@@ -399,15 +263,20 @@ TowerPtr World::getTowerById(TowerID towerID) {
 }
 
 void World::OnArcherTowerShot(MobPtr target, ArcherTower* shooter) {
-    bool explosiveArrows = shooter->getLevel().getPath() == TowerPath::Bottom;
-    notifyListeners(&WorldListener::OnArrowShot, target, shooter);
+    bool fireArrows = shooter->getLevel().getPath() == TowerPath::Bottom;
+    bool explosiveArrows = shooter->getLevel().getLevel() == 4 && fireArrows;
+
+    getWorldNotifier().notifyListeners(&WorldListener::OnArrowShot, target, fireArrows, shooter);
     if (explosiveArrows) {
-        notifyListeners(&WorldListener::OnExplosion, utils::shape::Circle{ target->getCenterX(), target->getCenterY(), ArcherTower::ExplosionRadius }, shooter->getStats()->getDamage(), shooter);
+        getWorldNotifier().notifyListeners(&WorldListener::OnExplosion, utils::shape::Circle{ target->getCenterX(), target->getCenterY(), ArcherTower::ExplosionRadius }, shooter->getStats()->getDamage(), shooter);
     }
 }
 
-void World::OnArrowShot(MobPtr target, Tower* shooter) {
-    notifyListeners(&WorldListener::OnMobDamage, target, shooter->getStats()->getDamage(), shooter);
+void World::OnArrowShot(MobPtr target, bool fireArrow, Tower* shooter) {
+    getMobNotifier().notifyListeners(&MobListener::OnMobDamage, target.get(), shooter->getStats()->getDamage(), shooter);
+    if (fireArrow) {
+        target->addEffect(EffectType::Fire, ArcherTower::FireDurationSec, shooter);
+    }
 }
 
 void World::OnExplosion(utils::shape::Circle explosion, float centerDamage, Tower* shooter) {
@@ -415,15 +284,22 @@ void World::OnExplosion(utils::shape::Circle explosion, float centerDamage, Towe
         if (mob->isAlive() && mob->collidesWith(explosion)) {
             // linear distance damage reduction
             float explosionDamage = mob->distance(explosion) / explosion.getRadius() * centerDamage;
-            notifyListeners(&WorldListener::OnMobDamage, mob, explosionDamage, shooter);
+            getMobNotifier().notifyListeners(&MobListener::OnMobDamage, mob.get(), explosionDamage, shooter);
         }
     }
 }
 
-void World::OnMobDamage(MobPtr target, float damage, Tower* source) {
+void World::OnMobCastleDamage(Mob* damager, TeamCastle* enemyCastle, float damage) {
+    enemyCastle->damage(damage);
+    if (enemyCastle->getLife() <= 0) {
+        // TODO: a team has won
+    }
+}
+
+void World::OnMobDamage(Mob* target, float damage, Tower* source) {
     target->damage(damage, source);
     if (target->isDead()) {
-        notifyListeners(&WorldListener::OnMobDead, target);
+        getMobNotifier().notifyListeners(&MobListener::OnMobDie, target);
     }
 }
 
@@ -451,5 +327,13 @@ const Team& World::getTeam(TeamColor team) const {
     return m_Game->getTeam(team);
 }
 
+const Player* World::getPlayerById(PlayerID id) const {
+    return m_Game->getPlayerById(id);
+}
+
+const TeamList& World::getTeams() const {
+    return m_Game->getTeams();
+}
+
 } // namespace game
 } // namespace td

src/game/client/Client.cpp

@@ -64,5 +64,10 @@ void Client::upgradeTower(game::TowerID tower, game::TowerLevel level) {
     m_Connexion.sendPacket(&packet);
 }
 
+void Client::removeTower(game::TowerID tower) {
+    protocol::RemoveTowerPacket packet(tower);
+    m_Connexion.sendPacket(&packet);
+}
+
 } // namespace client
 } // namespace td

src/game/client/ClientGame.cpp

@@ -1,10 +1,7 @@
 #include "game/client/ClientGame.h"
 #include "protocol/PacketDispatcher.h"
-//#include "game/Team.h"
 #include "game/client/Client.h"
 
-#include <iostream>
-
 namespace td {
 namespace client {
 
@@ -21,7 +18,6 @@ m_WorldRenderer(&m_WorldClient, this) {
     GetDispatcher()->RegisterHandler(protocol::PacketType::UpdateMoney, this);
     GetDispatcher()->RegisterHandler(protocol::PacketType::Disconnect, this);
     GetDispatcher()->RegisterHandler(protocol::PacketType::WorldData, this);
-    GetDispatcher()->RegisterHandler(protocol::PacketType::WorldAddTower, this);
 }
 
 ClientGame::~ClientGame() {
@@ -112,9 +108,5 @@ void ClientGame::renderWorld() {
     }
 }
 
-void ClientGame::HandlePacket(const protocol::WorldAddTowerPacket* packet) {
-    m_WorldRenderer.addTower(m_WorldClient.placeTowerAt(packet->getTowerID(), packet->getTowerType(), packet->getTowerX(), packet->getTowerY(), packet->getBuilder()));
-}
-
 } // namespace client
 } // namespace td

src/game/client/WorldClient.cpp

@@ -7,10 +7,12 @@ namespace td {
 namespace client {
 
 WorldClient::WorldClient(ClientGame* game) : game::World(game), protocol::PacketHandler(game->GetDispatcher()), m_Game(game) {
+    GetDispatcher()->RegisterHandler(protocol::PacketType::WorldAddTower, this);
     GetDispatcher()->RegisterHandler(protocol::PacketType::WorldBeginData, this);
     GetDispatcher()->RegisterHandler(protocol::PacketType::WorldData, this);
     GetDispatcher()->RegisterHandler(protocol::PacketType::SpawnMob, this);
     GetDispatcher()->RegisterHandler(protocol::PacketType::UpgradeTower, this);
+    GetDispatcher()->RegisterHandler(protocol::PacketType::RemoveTower, this);
 }
 
 void WorldClient::HandlePacket(const protocol::WorldBeginDataPacket* packet) {
@@ -32,8 +34,18 @@ void WorldClient::HandlePacket(const protocol::UpgradeTowerPacket* packet) {
     tower->upgrade(packet->getTowerLevel().getLevel(), packet->getTowerLevel().getPath());
 }
 
-void WorldClient::OnArrowShot(game::MobPtr target, game::Tower* tower) {
-    World::OnArrowShot(target, tower);
+void WorldClient::HandlePacket(const protocol::WorldAddTowerPacket* packet) {
+    game::TowerPtr newTower = placeTowerAt(packet->getTowerID(), packet->getTowerType(), packet->getTowerX(), packet->getTowerY(), packet->getBuilder());
+
+    getWorldNotifier().notifyListeners(&WorldListener::OnTowerAdd, newTower);
+}
+
+void WorldClient::HandlePacket(const protocol::RemoveTowerPacket* packet) {
+    game::TowerPtr tower = removeTower(packet->getTowerID());
+
+    if (tower != nullptr) {
+        getWorldNotifier().notifyListeners(&WorldListener::OnTowerRemove, tower);
+    }
 }
 
 } // namespace client

src/game/server/ServerConnexion.cpp

@@ -41,6 +41,7 @@ void ServerConnexion::registerHandlers() {
     GetDispatcher()->RegisterHandler(protocol::PacketType::PlaceTower, this);
     GetDispatcher()->RegisterHandler(protocol::PacketType::SendMobs, this);
     GetDispatcher()->RegisterHandler(protocol::PacketType::UpgradeTower, this);
+    GetDispatcher()->RegisterHandler(protocol::PacketType::RemoveTower, this);
 }
 
 bool ServerConnexion::updateSocket() {
@@ -159,6 +160,8 @@ void ServerConnexion::HandlePacket(const protocol::PlaceTowerPacket* packet) {
 
     game::TowerPtr tower = world->placeTowerAt(towerType, packet->getTowerX(), packet->getTowerY(), m_ID);
 
+    world->getWorldNotifier().notifyListeners(&game::WorldListener::OnTowerAdd, tower);
+
     protocol::WorldAddTowerPacket addTowerPacket(tower->getID(), packet->getTowerX(), packet->getTowerY(), packet->getTowerType(), m_ID);
     m_Server->broadcastPacket(&addTowerPacket);
 }
@@ -179,6 +182,12 @@ void ServerConnexion::HandlePacket(const protocol::UpgradeTowerPacket* packet) {
     m_Server->broadcastPacket(packet);
 }
 
+void ServerConnexion::HandlePacket(const protocol::RemoveTowerPacket* packet) {
+    //TODO: verify the packet
+
+    m_Server->broadcastPacket(packet);
+}
+
 ServerConnexion::~ServerConnexion() {
     if (GetDispatcher() != nullptr)
         GetDispatcher()->UnregisterHandler(this);

src/game/server/ServerWorld.cpp

@@ -22,17 +22,23 @@ void ServerWorld::spawnMobs(game::MobType type, std::uint8_t level, game::Player
             enemyMobSpawn = &getTeam(game::TeamColor::Red).getSpawn();
         }
 
-        std::int32_t spawnCenterX = enemyMobSpawn->getCenterX();
-        std::int32_t spawnCenterY = enemyMobSpawn->getCenterY();
+        float spawnWidth = enemyMobSpawn->getWidth();
+        float spawnHeight = enemyMobSpawn->getHeight();
 
-        std::int32_t minSpawnY = spawnCenterY - 2;
-        std::int32_t maxSpawnY = spawnCenterY + 2;
+        float spawnCenterX = enemyMobSpawn->getCenterX();
+        float spawnCenterY = enemyMobSpawn->getCenterY();
 
-        std::int32_t minSpawnX = spawnCenterX - 2;
-        std::int32_t maxSpawnX = spawnCenterX + 2;
+        auto mobStats = getMobStats(type, level);
+        auto mobSize = mobStats->getSize();
 
-        float mobX = utils::getRandomReal<float>(minSpawnX, maxSpawnX);
-        float mobY = utils::getRandomReal<float>(minSpawnY, maxSpawnY);
+        float minSpawnX = spawnCenterX - spawnWidth / 2.0f + mobSize.x / 2.0f;
+        float maxSpawnX = spawnCenterX + spawnWidth / 2.0f - mobSize.x / 2.0f;
+
+        float minSpawnY = spawnCenterY - spawnHeight / 2.0f + mobSize.y / 2.0f;
+        float maxSpawnY = spawnCenterY + spawnHeight / 2.0f - mobSize.y / 2.0f;
+
+        float mobX = utils::getRandomReal<float>(minSpawnX + MobSpawnBorder, maxSpawnX - MobSpawnBorder);
+        float mobY = utils::getRandomReal<float>(minSpawnY + MobSpawnBorder, maxSpawnY - MobSpawnBorder);
 
         spawnMobAt(m_CurrentMobID, type, level, sender, mobX, mobY, enemyMobSpawn->getDirection());
 
@@ -49,9 +55,5 @@ game::TowerPtr ServerWorld::placeTowerAt(game::TowerType type, std::int32_t x, s
     return tower;
 }
 
-void ServerWorld::OnArrowShot(game::MobPtr target, game::Tower* shooter) {
-    World::OnArrowShot(target, shooter);
-}
-
 } // namespace server
 } // namespace td

src/protocol/PacketFactory.cpp

@@ -28,7 +28,7 @@ static std::map<PacketType, PacketCreator> packets = {
     {PacketType::SpawnMob,          []() -> PacketPtr {return std::make_unique<SpawnMobPacket>(); } },
     {PacketType::PlaceTower,        []() -> PacketPtr {return std::make_unique<PlaceTowerPacket>(); } },
     {PacketType::WorldAddTower,     []() -> PacketPtr {return std::make_unique<WorldAddTowerPacket>(); } },
-    {PacketType::WorldRemoveTower,  []() -> PacketPtr {return std::make_unique<WorldRemoveTowerPacket>(); } },
+    {PacketType::RemoveTower,       []() -> PacketPtr {return std::make_unique<RemoveTowerPacket>(); } },
     {PacketType::SendMobs,          []() -> PacketPtr {return std::make_unique<SendMobsPacket>(); } },
     {PacketType::UpgradeTower,      []() -> PacketPtr {return std::make_unique<UpgradeTowerPacket>(); } },
 };

src/protocol/Protocol.cpp

@@ -94,11 +94,11 @@ DataBuffer WorldBeginDataPacket::SerializeCustom() const {
     const game::Spawn& redSpawn = m_Header.m_RedSpawn, blueSpawn = m_Header.m_BlueSpawn;
     const game::TeamCastle& redCastle = m_Header.m_RedCastle, blueCastle = m_Header.m_BlueCastle;
 
-    data << redSpawn << redCastle;
-    data << blueSpawn << blueCastle;
+    data << redSpawn << static_cast<utils::shape::Rectangle>(redCastle);
+    data << blueSpawn << static_cast<utils::shape::Rectangle>(blueCastle);
 
     // tile palette
-    data << m_Header.m_TilePalette.size();
+    data << static_cast<std::uint64_t>(m_Header.m_TilePalette.size());
 
     for (game::TilePtr tile : m_Header.m_TilePalette) {
         data << tile;
@@ -126,11 +126,11 @@ DataBuffer WorldBeginDataPacket::Serialize() const {
     const game::Spawn& redSpawn = m_Header.m_World->getRedTeam().getSpawn(), blueSpawn = m_Header.m_World->getBlueTeam().getSpawn();
     const game::TeamCastle& redCastle = m_Header.m_World->getRedTeam().getCastle(), blueCastle = m_Header.m_World->getBlueTeam().getCastle();
 
-    data << redSpawn << redCastle;
-    data << blueSpawn << blueCastle;
+    data << redSpawn << static_cast<utils::shape::Rectangle>(redCastle);
+    data << blueSpawn << static_cast<utils::shape::Rectangle>(blueCastle);
 
     // tile palette
-    data << m_Header.m_World->getTilePalette().size();
+    data << static_cast<std::uint64_t>(m_Header.m_World->getTilePalette().size());
 
     for (game::TilePtr tile : m_Header.m_World->getTilePalette()) {
         data << tile;
@@ -155,8 +155,13 @@ void WorldBeginDataPacket::Deserialize(DataBuffer& data) {
 
     data.SetReadOffset(data.GetReadOffset() + decoPalletteSizeByte);
 
-    data >> m_Header.m_RedSpawn >> m_Header.m_RedCastle;
-    data >> m_Header.m_BlueSpawn >> m_Header.m_BlueCastle;
+    utils::shape::Rectangle redCastle, blueCastle;
+
+    data >> m_Header.m_RedSpawn >> redCastle;
+    data >> m_Header.m_BlueSpawn >> blueCastle;
+
+    m_Header.m_RedCastle.setShape(redCastle);
+    m_Header.m_BlueCastle.setShape(blueCastle);
 
     std::uint64_t tilePaletteSize;
     data >> tilePaletteSize;
@@ -485,13 +490,13 @@ void WorldAddTowerPacket::Deserialize(DataBuffer& data) {
     data >> m_TowerID >> m_TowerX >> m_TowerY >> m_TowerType >> m_Builder;
 }
 
-DataBuffer WorldRemoveTowerPacket::Serialize() const {
+DataBuffer RemoveTowerPacket::Serialize() const {
     DataBuffer data;
     data << getID() << m_TowerID;
     return data;
 }
 
-void WorldRemoveTowerPacket::Deserialize(DataBuffer& data) {
+void RemoveTowerPacket::Deserialize(DataBuffer& data) {
     data >> m_TowerID;
 }
 
@@ -543,7 +548,7 @@ REGISTER_DISPATCH_CLASS(ServerTpsPacket);
 REGISTER_DISPATCH_CLASS(SpawnMobPacket);
 REGISTER_DISPATCH_CLASS(PlaceTowerPacket);
 REGISTER_DISPATCH_CLASS(WorldAddTowerPacket);
-REGISTER_DISPATCH_CLASS(WorldRemoveTowerPacket);
+REGISTER_DISPATCH_CLASS(RemoveTowerPacket);
 REGISTER_DISPATCH_CLASS(SendMobsPacket);
 REGISTER_DISPATCH_CLASS(UpgradeTowerPacket);
 

src/render/VertexCache.cpp

@@ -5,46 +5,43 @@ namespace td {
 namespace render {
 
 void VertexCache::addData(std::uint64_t index, std::vector<float> positions, std::vector<float> colors) {
-    ElementsIndex positionsIndexes;
-    positionsIndexes.first = m_Positions.end();
-    m_Positions.insert(m_Positions.end(), positions.begin(), positions.end());
-    positionsIndexes.second = m_Positions.end() - 1;
-
-    ElementsIndex colorsIndexes;
-    colorsIndexes.first = m_Colors.end();
-    m_Colors.insert(m_Colors.end(), colors.begin(), colors.end());
-    colorsIndexes.second = m_Colors.end() - 1;
-
-    m_Indexes.insert({ index, {positionsIndexes, colorsIndexes} });
+    m_Indexes.insert({ index, {positions, colors} });
+    m_VertexCount += colors.size(); // one color per vertex
 }
 
 void VertexCache::removeData(std::uint64_t index) {
     auto it = m_Indexes.find(index);
     if (it != m_Indexes.end()) {
-        DataIndex indexes = it->second;
-        ElementsIndex positionsIndexes = indexes.first;
-        ElementsIndex colorsIndexes = indexes.second;
-
-        m_Positions.erase(positionsIndexes.first, positionsIndexes.second);
-        m_Colors.erase(colorsIndexes.first, colorsIndexes.second);
-
         m_Indexes.erase(it);
+        m_VertexCount -= it->second.color.size(); // one color per vertex
     }
 }
 
 void VertexCache::clear() {
-    m_Positions.clear();
-    m_Colors.clear();
     m_Indexes.clear();
+    m_VertexCount = 0;
 }
 
 void VertexCache::updateVertexArray() {
-    m_VertexArray = std::make_unique<GL::VertexArray>(m_Colors.size()); // one color per vertex
+    m_VertexArray = std::make_unique<GL::VertexArray>(m_VertexCount); // one color per vertex
 
-    GL::VertexBuffer positionsBuffer(m_Positions, 2);
+    Vector positions;
+    positions.reserve(m_VertexCount * 2);
+
+    Vector colors;
+    colors.reserve(m_VertexCount);
+
+    for (auto it = m_Indexes.begin(); it != m_Indexes.end(); it++) {
+        const DataIndex& data = it->second;
+
+        positions.insert(positions.end(), data.position.begin(), data.position.end());
+        colors.insert(colors.end(), data.color.begin(), data.color.end());
+    }
+
+    GL::VertexBuffer positionsBuffer(positions, 2);
     positionsBuffer.addVertexAttribPointer(0, 2, 0);
 
-    GL::VertexBuffer colorsBuffer(m_Colors, 1);
+    GL::VertexBuffer colorsBuffer(colors, 1);
     colorsBuffer.addVertexAttribPointer(1, 1, 0);
 
     m_VertexArray->bind();

src/render/WorldRenderer.cpp

@@ -37,6 +37,8 @@ WorldRenderer::WorldRenderer(game::World* world, client::ClientGame* client) : m
     m_Renderer->setCamMovement({});
     m_TowerPlacePopup = std::make_unique<gui::TowerPlacePopup>(m_Client->getClient());
     m_MobTooltip = std::make_unique<gui::MobTooltip>(m_Client->getClient());
+    m_CastleTooltip = std::make_unique<gui::CastleTooltip>(m_Client->getClient());
+    m_Client->getWorld().getWorldNotifier().bindListener(this);
 }
 
 void WorldRenderer::updateCursorPos() {
@@ -64,6 +66,18 @@ void WorldRenderer::update() {
             m_PopupOpened = false;
         }
     }
+
+    if (ImGui::IsMouseDoubleClicked(1)) removeTower();
+}
+
+void WorldRenderer::removeTower() {
+    glm::vec2 cursorPos = getCursorWorldPos();
+
+    game::TowerPtr clickedTower = m_World->getTower(cursorPos);
+
+    if (clickedTower != nullptr) {
+        m_Client->getClient()->removeTower(clickedTower->getID());
+    }
 }
 
 void WorldRenderer::renderWorld() const {
@@ -106,7 +120,7 @@ void WorldRenderer::render() {
     renderMobs();
     renderTowers();
     renderTileSelect();
-    renderMobTooltip();
+    renderTooltips();
     renderPopups();
     detectClick();
 }
@@ -115,6 +129,11 @@ WorldRenderer::~WorldRenderer() {
 
 }
 
+void WorldRenderer::renderTooltips() const {
+    renderMobTooltip();
+    renderCastleTooltip();
+}
+
 void WorldRenderer::moveCam(float relativeX, float relativeY, float aspectRatio) {
     if (m_WorldVao == nullptr)
         return;
@@ -232,10 +251,17 @@ void WorldRenderer::renderMobTooltip() const {
     m_MobTooltip->render();
 }
 
+void WorldRenderer::renderCastleTooltip() const {
+    if (ImGui::IsAnyItemHovered()) return;
+
+    detectCastleHovering();
+    m_CastleTooltip->render();
+}
+
 void WorldRenderer::detectMobHovering() const {
     glm::vec2 cursorWorldPos = getCursorWorldPos();
     for (game::MobPtr mob : m_World->getMobList()) {
-        if(mob->collidesWith({cursorWorldPos.x, cursorWorldPos.y})){
+        if (mob->collidesWith({ cursorWorldPos.x, cursorWorldPos.y })) {
             m_MobTooltip->setMob(mob.get());
             return;
         }
@@ -243,13 +269,24 @@ void WorldRenderer::detectMobHovering() const {
     m_MobTooltip->setMob(nullptr);
 }
 
-void WorldRenderer::addTower(game::TowerPtr tower) {
-    const WorldLoader::RenderData& renderData = WorldLoader::loadTowerModel(tower);
+void WorldRenderer::detectCastleHovering() const {
+    glm::vec2 cursorWorldPos = getCursorWorldPos();
+    for (const game::Team& team : m_World->getTeams()) {
+        if (team.getCastle().collidesWith({ cursorWorldPos.x, cursorWorldPos.y })) {
+            m_CastleTooltip->setCastle(&team.getCastle());
+            return;
+        }
+    }
+    m_CastleTooltip->setCastle(nullptr);
+}
+
+void WorldRenderer::OnTowerAdd(game::TowerPtr tower) {
+    WorldLoader::RenderData renderData = WorldLoader::loadTowerModel(tower);
     m_TowersCache.addData(tower->getID(), renderData.positions, renderData.colors);
     m_TowersCache.updateVertexArray();
 }
 
-void WorldRenderer::removeTower(game::TowerPtr tower) {
+void WorldRenderer::OnTowerRemove(game::TowerPtr tower) {
     m_TowersCache.removeData(tower->getID());
     m_TowersCache.updateVertexArray();
 }

src/render/gui/CastleTooltip.cpp

@@ -0,0 +1,27 @@
+#include "render/gui/CastleTooltip.h"
+#include "render/gui/imgui/imgui.h"
+
+#include "render/WorldRenderer.h"
+
+#include "game/client/Client.h"
+
+namespace td {
+namespace gui {
+
+CastleTooltip::CastleTooltip(client::Client* client) : GuiWidget(client) {
+
+}
+
+void CastleTooltip::render() {
+    if (m_Castle == nullptr) return;
+
+    ImGui::BeginTooltip();
+    ImGui::PushStyleColor(ImGuiCol_Text, render::WorldRenderer::getImGuiTeamColor(m_Castle->getTeam()->getColor()));
+    ImGui::Text("Castle : ");
+    ImGui::PopStyleColor();
+    ImGui::Text("\tCastle HP : %i/%i", static_cast<int>(m_Castle->getLife()), game::TeamCastle::CastleMaxLife);
+    ImGui::EndTooltip();
+}
+
+} // namespace gui
+} // namespace td

src/render/gui/MobTooltip.cpp

@@ -17,12 +17,14 @@ MobTooltip::MobTooltip(client::Client* client) : GuiWidget(client) {
 void MobTooltip::render() {
     if (m_Mob == nullptr) return;
 
-    const game::Player& sender = getClient()->getGame().getPlayerById(m_Mob->getSender());
+    // TODO: add sender null check
+
+    const game::Player* sender = getClient()->getGame().getPlayerById(m_Mob->getSender());
     ImGui::BeginTooltip();
     ImGui::Text("Sender :");
     ImGui::SameLine();
-    ImGui::PushStyleColor(ImGuiCol_Text, render::WorldRenderer::getImGuiTeamColor(sender.getTeamColor()));
-    ImGui::Text("%s", sender.getName().c_str());
+    ImGui::PushStyleColor(ImGuiCol_Text, render::WorldRenderer::getImGuiTeamColor(sender->getTeamColor()));
+    ImGui::Text("%s", sender->getName().c_str());
     ImGui::PopStyleColor();
     ImGui::Text("Mob HP : %.1f/%i", m_Mob->getHealth(), m_Mob->getStats()->getMaxLife());
     ImGui::Text("Mob Type : %s", game::MobFactory::getMobName(m_Mob->getType()).c_str());

xmake.lua

@@ -35,6 +35,12 @@ target("TowerDefense")
         end
 
     else
+        if is_os("linux") then
+            add_links("dw")
+        end
+        if is_os("windows") then
+            add_links("dbghelp", "psapi", "kernel32", "msvcr90")
+        end
         add_cxflags("-pedantic -Wall -Wextra -Wcast-align -Wcast-qual -Wctor-dtor-privacy -Wdisabled-optimization -Wformat=2 -Winit-self -Wlogical-op -Wmissing-declarations -Wmissing-include-dirs -Wnoexcept -Wold-style-cast -Woverloaded-virtual -Wredundant-decls -Wshadow -Wsign-conversion -Wsign-promo -Wstrict-null-sentinel -Wstrict-overflow=5 -Wswitch-default -Wundef -Wno-unused")
     end