Merge pull request 'Merge new features' (#23) from dev into main

Reviewed-on: #23

.vscode/c_cpp_properties.json

@@ -1,11 +1,13 @@
 {
-    "configurations": [
-        {
-            "name": "Blitz",
-            "cppStandard": "c++17",
-            "includePath": ["include"],
-            "compileCommands": ".vscode/compile_commands.json"
-        }
-    ],
-    "version": 4
+  "configurations": [
+    {
+      "name": "Blitz",
+      "cppStandard": "c++17",
+      "includePath": [
+        "include"
+      ],
+      "compileCommands": ".vscode/compile_commands.json"
+    }
+  ],
+  "version": 4
 }

.vscode/launch.json

@@ -2,6 +2,13 @@
     // Xmake debug
     "version": "0.2.0",
     "configurations": [
+        {
+            "type": "xmake",
+            "request": "launch",
+            "name": "debug intersects test",
+            "target": "test_intersects",
+            "cwd": "",
+        },
         {
             "type": "xmake",
             "request": "launch",

include/blitz/game/Listeners.h

@@ -1,6 +1,6 @@
 #pragma once
 
-#include "blitz/common/Vector.h"
+#include "blitz/maths/Vector.h"
 
 namespace blitz {
 namespace game {

include/blitz/game/Player.h

@@ -1,13 +1,20 @@
 #pragma once
 
 #include "blitz/common/Defines.h"
-#include "blitz/common/Vector.h"
+#include "blitz/maths/Vector.h"
 #include <cstdint>
 #include <string>
 
 namespace blitz {
 namespace game {
 
+struct PlayerStats {
+	std::uint16_t m_Deaths;
+	std::uint16_t m_Kills;
+	std::uint32_t m_ShootCount;
+	std::uint32_t m_ShootSuccessCount;
+};
+
 class Player {
   private:
 	PlayerID m_ID;
@@ -16,9 +23,12 @@ class Player {
 	Vec3f m_Velocity;
 	float m_Yaw;
 	float m_Pitch;
+	float m_HP;
+	bool m_IsBot;
+	PlayerStats m_Stats{};
 
   public:
-	Player(PlayerID id) : m_ID(id), m_Yaw(0), m_Pitch(0) {}
+	Player(PlayerID id) : m_ID(id), m_Yaw(0), m_Pitch(0), m_IsBot(false) {}
 
 	PlayerID GetID() const {
 		return m_ID;
@@ -75,6 +85,26 @@ class Player {
 	void AddPitch(float dPitch) {
 		m_Pitch += dPitch;
 	}
+
+	float GetHP() const {
+		return m_HP;
+	}
+
+	void SetHP(float hp) {
+		m_HP = hp;
+	}
+
+	bool IsBot() const {
+		return m_IsBot;
+	}
+
+	void SetBot() {
+		m_IsBot = true;
+	}
+
+	PlayerStats& GetStats() {
+		return m_Stats;
+	}
 };
 
 

include/blitz/maths/Maths.h

@@ -1,6 +1,6 @@
 #pragma once
 
-#include "blitz/common/Vector.h"
+#include "blitz/maths/Vector.h"
 #include <cmath>
 
 namespace blitz {
@@ -8,6 +8,22 @@ namespace maths {
 
 static constexpr float PI = 3.141592653f;
 
+template <typename T>
+/**
+ * @brief returns the amount of overlap between the ranges [a1 ; b1] and [a2 ; b2]
+*/
+T RangesOverlap(T& a1, T& b1, T& a2, T& b2) {
+	return std::min(std::max(a1, b1), std::max(a2, b2)) - std::max(std::min(a1, b1), std::min(a2, b2));
+}
+
+template <typename T>
+/**
+ * @brief returns whether the ranges [a1 ; b1] and [a2 ; b2] overlap
+*/
+bool RangesOverlapping(T& a1, T& b1, T& a2, T& b2) {
+	return RangesOverlap(a1, a2, b1, b2) >= 0;
+}
+
 //////////////////////////////////////////////////////////////////
 // 							Vectors								//
 //////////////////////////////////////////////////////////////////
@@ -55,6 +71,100 @@ T Distance(const Vec3<T>& vect, const Vec3<T>& other) {
 	return Length(vect - other);
 }
 
+// it seems that `std::{min, max}`'s behavior conflicts with that of `cmath`'s `f{min, max}[f]`
+// Why? Like I fucking know dude
+
+
+template <typename T>
+T ReduceMin(const Vec3<T>& vect) {
+	return std::min(std::min(vect.x, vect.y), vect.z);
+}
+
+template <typename T>
+T ReduceMax(const Vec3<T>& vect) {
+	return std::max(std::max(vect.x, vect.y), vect.z);
+}
+
+/**
+ * @brief returns the (signed) minimal coordinate of the vector
+ *
+ * @param v
+ * @return constexpr T
+ */
+template <>
+inline float ReduceMin<float>(const Vec3f& v) {
+	return std::fminf(std::fminf(v.x, v.y), v.z);
+}
+
+/**
+ * @brief returns the (signed) maximal coordinate of the vector
+ *
+ * @param v
+ * @return constexpr T
+ */
+template <>
+inline float ReduceMax<float>(const Vec3f& v) {
+	return std::fmaxf(std::fmaxf(v.x, v.y), v.z);
+}
+
+/**
+ * @brief returns the (signed) minimal coordinate of the vector
+ *
+ * @param v
+ * @return constexpr T
+ */
+template <>
+inline double ReduceMin<double>(const Vec3d& v) {
+	return std::fmin(std::fmin(v.x, v.y), v.z);
+}
+
+/**
+ * @brief returns the (signed) maximal coordinate of the vector
+ *
+ * @param v
+ * @return constexpr T
+ */
+template <>
+inline double ReduceMax<double>(const Vec3d& v) {
+	return std::fmax(std::fmax(v.x, v.y), v.z);
+}
+
+/**
+ * @brief returns the coordinate-wise minimum of the given vectors,
+ * where a coordinate in the returned vector is NAN iff any of the two compared ones are NAN
+ *
+ * @tparam T
+ * @param self
+ * @param other
+ * @return constexpr Vec3f
+ */
+template <typename T>
+constexpr Vec3<T> Min(const Vec3<T>& self, const Vec3<T>& other) {
+	return {
+		std::min(self.x, other.x),
+		std::min(self.y, other.y),
+		std::min(self.z, other.z),
+	};
+}
+
+/**
+ * @brief returns the coordinate-wise maximum of the given vectors,
+ * where a coordinate in the returned vector is NAN iff any of the two compared ones are NAN
+ *
+ * @tparam T
+ * @param self
+ * @param other
+ * @return constexpr Vec3f
+ */
+template <typename T>
+constexpr Vec3<T> Max(const Vec3<T>& self, const Vec3<T>& other) {
+	return {
+		std::max(self.x, other.x),
+		std::max(self.y, other.y),
+		std::max(self.z, other.z),
+	};
+}
+
 //////////////////////////////////////////////////////////////////
 // 						    Matricies							//
 //////////////////////////////////////////////////////////////////

include/blitz/maths/Physics.h

@@ -0,0 +1,30 @@
+#pragma once
+
+#include "blitz/maths/Vector.h"
+
+namespace blitz {
+namespace maths {
+
+struct Ray {
+	Vec3f origin;
+	Vec3f direction;
+};
+
+struct AABB {
+	Vec3f from;
+	Vec3f to;
+};
+
+inline AABB operator+(const AABB& aabb, const Vec3f& offset) {
+	AABB result = aabb;
+	result.from += offset;
+	result.to += offset;
+	return result;
+}
+
+float Distance(const Ray& ray, const AABB& aabb);
+
+bool Intersects(const Ray& ray, const AABB& aabb);
+
+}  // namespace maths
+}  // namespace blitz

include/blitz/maths/Vector.h

@@ -1,5 +1,7 @@
 #pragma once
 
+#include <algorithm>
+#include <cmath>
 #include <cstddef>
 
 namespace blitz {
@@ -23,10 +25,6 @@ struct Vec2 {
 	constexpr Vec2(T X = 0, T Y = 0) : x(X), y(Y) {}
 };
 
-
-
-
-
 template <typename T>
 struct Vec3 {
 	union {
@@ -47,10 +45,6 @@ struct Vec3 {
 	constexpr Vec3(T X = 0, T Y = 0, T Z = 0) : x(X), y(Y), z(Z) {}
 };
 
-
-
-
-
 template <typename T>
 struct Vec4 {
 	union {
@@ -77,10 +71,6 @@ struct Vec4 {
 	constexpr Vec4(T X = 0, T Y = 0, T Z = 0, T W = 0) : x(X), y(Y), z(Z), w(W) {}
 };
 
-
-
-
-
 using Vec2uc = Vec2<unsigned char>;
 using Vec2i = Vec2<int>;
 using Vec2u = Vec2<unsigned int>;
@@ -178,7 +168,7 @@ Vec3<T>& operator+=(Vec3<T>& vect, const Vec3<T>& other) {
 
 template <typename T>
 constexpr Vec3<T> operator-(const Vec3<T>& vect, const Vec3<T>& other) {
-	return vect + (-other);
+	return {vect.x - other.x, vect.y - other.y, vect.z - other.z};
 }
 
 template <typename T>
@@ -197,9 +187,44 @@ constexpr Vec3<T> operator*(T mult, const Vec3<T>& vect) {
 	return vect * mult;
 }
 
+template <typename T>
+constexpr Vec3<T> operator*=(const Vec3<T>& vect, T mult) {
+	vect = vect * mult;
+	return vect;
+}
 
+template <typename T>
+constexpr Vec3<T> operator*=(T mult, const Vec3<T>& vect) {
+	vect = vect * mult;
+	return vect;
+}
 
+template <typename T>
+constexpr Vec3<T> operator*(const Vec3<T>& vect, const Vec3<T>& other) {
+	return {vect.x * other.x, vect.y * other.y, vect.z * other.z};
+}
 
+template <typename T>
+Vec3<T>& operator*=(Vec3<T>& vect, const Vec3<T>& other) {
+	vect = vect * other;
+	return vect;
+}
+
+template <typename T>
+constexpr Vec3<T> operator/(const Vec3<T>& vect, const Vec3<T>& other) {
+	return {vect.x / other.x, vect.y / other.y, vect.z / other.z};
+}
+
+template <typename T>
+Vec3<T>& operator/=(Vec3<T>& vect, const Vec3<T>& other) {
+	vect = vect / other;
+	return vect;
+}
+
+template <typename T>
+constexpr bool operator<(const Vec3<T>& vec3, const Vec3<T>& other) {
+	return vec3.x < other.x && vec3.y < other.y && vec3.z < other.z;
+}
 
 // Vec4
 
@@ -245,10 +270,6 @@ constexpr Vec4<T> operator*(T mult, const Vec4<T>& vect) {
 	return vect * mult;
 }
 
-
-
-
-
 //////////////////////////////////////////////////////////////////
 // 							Matrix								//
 //////////////////////////////////////////////////////////////////
@@ -279,26 +300,18 @@ struct Mat4 {
 	}
 
 	T at(std::size_t row, std::size_t column) const {
-		return operator[](row* MATRIX_SIZE + column);
+		return operator[](row * MATRIX_SIZE + column);
 	}
 
 	T& at(std::size_t row, std::size_t column) {
-		return operator[](row* MATRIX_SIZE + column);
+		return operator[](row * MATRIX_SIZE + column);
 	}
 };
 
-
-
-
-
 typedef Mat4<float> Mat4f;
 typedef Mat4<int> Mat4i;
 typedef Mat4<double> Mat4d;
 
-
-
-
-
 template <typename T>
 bool operator==(const Mat4<T>& mat, const Mat4<T>& other) {
 	return mat.x0 == other.x0 && mat.y0 == other.y0 && mat.z0 == other.z0 && mat.w0 == other.w0 && mat.x1 == other.x1 &&
@@ -306,5 +319,4 @@ bool operator==(const Mat4<T>& mat, const Mat4<T>& other) {
 		   mat.z2 == other.z2 && mat.w2 == other.w2 && mat.x3 == other.x3 && mat.y3 == other.y3 && mat.z3 == other.z3 &&
 		   mat.w3 == other.w3;
 }
-
 }  // namespace blitz

include/blitz/misc/PrettyLog.h

@@ -1,6 +1,6 @@
 #pragma once
 
-#include "blitz/common/Vector.h"
+#include "blitz/maths/Vector.h"
 #include <string>
 
 namespace blitz {

include/blitz/protocol/PacketHandler.h

@@ -31,6 +31,7 @@ class PacketHandler {
 	virtual void HandlePacket(const PlayerPositionAndRotationPacket* packet) {}
 	virtual void HandlePacket(const PlayerShootPacket* packet) {}
 	virtual void HandlePacket(const ServerTpsPacket* packet) {}
+	virtual void HandlePacket(const UpdateHealthPacket* packet) {}
 };
 
 }  // namespace protocol

include/blitz/protocol/Packets.h

@@ -8,4 +8,5 @@
 #include "packets/PlayerLoginPacket.h"
 #include "packets/PlayerPositionAndRotationPacket.h"
 #include "packets/PlayerShootPacket.h"
-#include "packets/ServerTpsPacket.h"
+#include "packets/ServerTpsPacket.h"
+#include "packets/UpdateHealthPacket.h"

include/blitz/protocol/PacketsForward.h

@@ -14,6 +14,7 @@ class PlayerLoginPacket;
 class PlayerPositionAndRotationPacket;
 class PlayerShootPacket;
 class ServerTpsPacket;
+class UpdateHealthPacket;
 
 }  // namespace protocol
 }  // namespace blitz

include/blitz/protocol/Protocol.h

@@ -20,6 +20,7 @@ enum class PacketType : std::uint8_t {
 	// client --> server
 
 	PlayerLogin = 0, /**< Corresponds to PlayerLoginPacket */
+	UpdateHealth,	 /**< Corresponds to UpdateHealthPacket */
 
 	// client <-- server
 

include/blitz/protocol/packets/ChatPacket.h

@@ -1,6 +1,6 @@
 #pragma once
 
-#include "blitz/common/Vector.h"
+#include "blitz/maths/Vector.h"
 #include "blitz/protocol/Protocol.h"
 #include <vector>
 

include/blitz/protocol/packets/PlayerPositionAndRotationPacket.h

@@ -1,7 +1,7 @@
 #pragma once
 
 #include "blitz/common/Defines.h"
-#include "blitz/common/Vector.h"
+#include "blitz/maths/Vector.h"
 #include "blitz/protocol/Protocol.h"
 
 namespace blitz {

include/blitz/protocol/packets/UpdateHealthPacket.h

@@ -0,0 +1,31 @@
+#pragma once
+
+#include "blitz/protocol/Protocol.h"
+
+namespace blitz {
+namespace protocol {
+
+class UpdateHealthPacket : public Packet {
+  private:
+	float m_NewHealth;
+
+  public:
+	UpdateHealthPacket() {}
+	UpdateHealthPacket(float newHealth) : m_NewHealth(newHealth) {}
+	virtual ~UpdateHealthPacket() {}
+
+	virtual DataBuffer Serialize(bool packetID = true) const;
+	virtual void Deserialize(DataBuffer& data);
+	virtual void Dispatch(PacketHandler* handler) const;
+
+	std::uint8_t GetNewHealth() const {
+		return m_NewHealth;
+	}
+
+	virtual PacketType GetType() const {
+		return PacketType::UpdateHealth;
+	}
+};
+
+}  // namespace protocol
+}  // namespace blitz

include/client/game/ClientGame.h

@@ -24,6 +24,7 @@ class ClientGame : public game::Game, public protocol::PacketHandler {
 	virtual void HandlePacket(const protocol::PlayerListPacket* packet) override;
 	virtual void HandlePacket(const protocol::PlayerPositionAndRotationPacket* packet) override;
 	virtual void HandlePacket(const protocol::PlayerShootPacket* packet) override;
+	virtual void HandlePacket(const protocol::UpdateHealthPacket* packet) override;
 
   private:
 	void RegisterHandlers();

include/client/render/BulletRenderer.h

@@ -1,6 +1,6 @@
 #pragma once
 
-#include "blitz/common/Vector.h"
+#include "blitz/maths/Vector.h"
 #include "client/render/loader/ModelLoader.h"
 #include <memory>
 #include <vector>

include/client/render/Camera.h

@@ -1,7 +1,7 @@
 #pragma once
 
-#include "blitz/common/Vector.h"
 #include "blitz/game/Player.h"
+#include "blitz/maths/Vector.h"
 #include <cstdint>
 
 namespace blitz {

include/client/render/shader/ShaderProgram.h

@@ -1,6 +1,6 @@
 #pragma once
 
-#include "blitz/common/Vector.h"
+#include "blitz/maths/Vector.h"
 #include "client/render/OpenGL.h"
 #include <string>
 

include/server/game/ServerGame.h

@@ -17,6 +17,8 @@ class ServerGame : public game::Game {
 	ServerGame(Server* server);
 	virtual ~ServerGame();
 
+	void CheckShoot(game::PlayerID player, Vec3f position, float yaw, float pitch);
+
 	void AddPlayer(game::PlayerID player, const std::string& name) override;
 	void RemovePlayer(game::PlayerID player) override;
 
@@ -24,6 +26,8 @@ class ServerGame : public game::Game {
 
   private:
 	void SendPlayerPositions();
+	void DamagePlayer(game::Player& player, game::Player& shooter);
+	void UpdateHP(game::Player& player, float newHP);
 };
 
 }  // namespace server

src/blitz/game/Game.cpp

@@ -22,8 +22,11 @@ const Player* Game::GetPlayerById(PlayerID id) const {
 }
 
 void Game::AddPlayer(PlayerID player, const std::string& name) {
+	static float MAX_HP = 100;
+
 	game::Player newPlayer{player};
 	newPlayer.SetName(name);
+	newPlayer.SetHP(MAX_HP);
 
 	GetPlayers().insert({player, newPlayer});
 }

src/blitz/maths/Maths.cpp

@@ -1,4 +1,4 @@
-#include "blitz/misc/Maths.h"
+#include "blitz/maths/Maths.h"
 
 #include <cassert>
 

src/blitz/maths/Physics.cpp

@@ -0,0 +1,68 @@
+#include "blitz/maths/Physics.h"
+#include "blitz/maths/Maths.h"
+
+#include <cmath>
+
+namespace blitz {
+namespace maths {
+
+/**
+* @brief Returns `true` if the half-line `ray` _strictly_ intersects with `aabb`,
+*  and `false` if it _strictly_ doesn't intersect.
+*  Note that if it only intersects with corners, edges, or sides of the box, 
+*  or if any coordinate in `ray` is `NAN` or `inf` or if any coordinate in
+*  `aabb` is `NAN` the result is unspecified.
+ * */
+float Distance(const Ray& ray, const AABB& aabb) {
+
+	// This function calculates smallest interval I = ] a, b [, for strictly positive a and b
+	// such that for all t in I, for all l, r, o, d corresponding
+	// coordinates in aabb.from, aabb.to, ray.origin, ray.direction, respectively
+	//
+	//	min(l, r) < o + t * d < max(l, r)
+	// 
+	// and returns true if it's non-empty i.e. a < b 
+
+	// m = min(l, r), M = max(l, r)
+	// m < o + t * d < M
+	Vec3f l = Min(aabb.from, aabb.to);
+	Vec3f r = Max(aabb.to, aabb.from);
+
+	// m - o < t * d < M - o
+	l -= ray.origin;
+	r -= ray.origin;
+
+	// (m - o) / d < t < (M - o) / d
+	l /= ray.direction;
+	r /= ray.direction;
+
+	// but if d is negative the inequality is flipped
+	Vec3f u = Min(l, r);
+	r = Max(l, r);
+	l = u;
+
+	float tmin = ReduceMax(l);
+	float tmax = ReduceMin(r);
+
+	// Since Min propagates NANs and ReduceMin doesn't, and since NAN !< <any float>
+	// the inequality becomes ignored for coordinates where a NAN is involved
+	// (as a result of 0.0 / 0.0). If all coordinates are NAN, this means
+	// that the box is reduced to a point and the ray has direction 0,
+	// in which case this returns -1
+	if (tmax >= 0.0f && tmin <= tmax) {
+		return std::fmaxf(tmin, 0.0f);
+	}
+
+	return -1.0f;
+}
+
+bool Intersects(const AABB& aabb1, const AABB& aabb2) {
+	return false;
+}
+
+bool Intersects(const Ray& ray, const AABB& aabb) {
+	return Distance(ray, aabb) >= 0.0f;
+}
+
+}  // namespace maths
+}  // namespace blitz

src/blitz/misc/Easing.cpp

@@ -1,6 +1,6 @@
 #include "blitz/misc/Easing.h"
 
-#include "blitz/misc/Maths.h"
+#include "blitz/maths/Maths.h"
 
 namespace blitz {
 namespace utils {

src/blitz/protocol/PacketFactory.cpp

@@ -14,6 +14,7 @@ typedef std::unique_ptr<Packet> PacketPtr;
 
 static std::array<PacketPtr, static_cast<std::size_t>(PacketType::PACKET_COUNT)> Packets = {
 	std::make_unique<PlayerLoginPacket>(),
+	std::make_unique<UpdateHealthPacket>(),
 	std::make_unique<ConnexionInfoPacket>(),
 	std::make_unique<PlayerJoinPacket>(),
 	std::make_unique<PlayerLeavePacket>(),

src/blitz/protocol/Protocol.cpp

@@ -25,6 +25,7 @@ REGISTER_DISPATCH_CLASS(ServerTpsPacket)
 REGISTER_DISPATCH_CLASS(ChatPacket)
 REGISTER_DISPATCH_CLASS(PlayerPositionAndRotationPacket)
 REGISTER_DISPATCH_CLASS(PlayerShootPacket);
+REGISTER_DISPATCH_CLASS(UpdateHealthPacket);
 
 }  // namespace protocol
 }  // namespace blitz

src/blitz/protocol/packets/ChatPacket.cpp

@@ -1,6 +1,6 @@
 #include "blitz/protocol/packets/ChatPacket.h"
 
-#include "blitz/common/Vector.h"
+#include "blitz/maths/Vector.h"
 #include "blitz/misc/Log.h"
 #include <map>
 #include <sstream>

src/blitz/protocol/packets/UpdateHealthPacket.cpp

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

src/client/display/PlayerController.cpp

@@ -1,8 +1,8 @@
 #include "client/display/PlayerController.h"
 
 #include "blitz/game/Player.h"
+#include "blitz/maths/Maths.h"
 #include "blitz/misc/Log.h"
-#include "blitz/misc/Maths.h"
 #include "client/Client.h"
 #include "client/display/InputManager.h"
 #include "imgui.h"

src/client/game/ClientGame.cpp

@@ -1,12 +1,14 @@
 #include "client/game/ClientGame.h"
 
 #include "blitz/misc/Log.h"
+#include "blitz/misc/Random.h"
 #include "blitz/protocol/PacketDispatcher.h"
 #include "blitz/protocol/packets/PlayerJoinPacket.h"
 #include "blitz/protocol/packets/PlayerLeavePacket.h"
 #include "blitz/protocol/packets/PlayerListPacket.h"
 #include "blitz/protocol/packets/PlayerPositionAndRotationPacket.h"
 #include "blitz/protocol/packets/PlayerShootPacket.h"
+#include "blitz/protocol/packets/UpdateHealthPacket.h"
 #include "client/Client.h"
 
 namespace blitz {
@@ -27,6 +29,7 @@ void ClientGame::RegisterHandlers() {
 	GetDispatcher()->RegisterHandler(protocol::PacketType::PlayerList, this);
 	GetDispatcher()->RegisterHandler(protocol::PacketType::PlayerPositionAndRotation, this);
 	GetDispatcher()->RegisterHandler(protocol::PacketType::PlayerShoot, this);
+	GetDispatcher()->RegisterHandler(protocol::PacketType::UpdateHealth, this);
 }
 
 void ClientGame::HandlePacket(const protocol::PlayerJoinPacket* packet) {
@@ -48,6 +51,17 @@ void ClientGame::HandlePacket(const protocol::PlayerListPacket* packet) {
 	}
 }
 
+void ClientGame::HandlePacket(const protocol::UpdateHealthPacket* packet) {
+	game::Player* player = m_Client->GetGame()->GetPlayerById(m_Client->GetPlayerID());
+	player->SetHP(packet->GetNewHealth());
+
+	// we are dead
+	if (player->GetHP() <= 0.0f) {
+		player->SetPosition({utils::GetRandomReal(-10.0f, 10.0f), 0, utils::GetRandomReal(-10.0f, 10.0f)});
+	}
+}
+
+
 void ClientGame::HandlePacket(const protocol::PlayerShootPacket* packet) {
 	m_Client->NotifyListeners(
 		&GuiListener::OnPlayerShoot, packet->GetPlayer(), packet->GetPosition(), packet->GetYaw(), packet->GetPitch());

src/client/gui/Hud.cpp

@@ -1,8 +1,9 @@
 #include "client/gui/Hud.h"
 
+#include "client/Client.h"
+#include "client/game/ClientGame.h"
 #include "client/gui/GuiWidget.h"
 #include "client/render/loader/TextureLoader.h"
-#include <client/Client.h>
 #include <imgui.h>
 
 namespace blitz {
@@ -37,28 +38,16 @@ void Hud::Draw(const char* title, bool* p_open) {
 	ImGui::Image(reinterpret_cast<ImTextureID>(m_JP), jpSize);
 
 	ImGui::SameLine(0.0f, paddingHeight);
-	// ImGui::EndGroup();
 
-	// ImGui::SetCursorPosX(pvBarPos.x);
-	// ImGui::SetCursorPosY(pvBarPos.y);
 	ImGui::BeginGroup();
 	{
-		// Animate a simple progress bar
-		static float progress = 0.0f, progress_dir = 1.0f;
-		progress += progress_dir * 0.4f * ImGui::GetIO().DeltaTime;
-		if (progress >= +1.0f) {
-			progress = +1.0f;
-			progress_dir *= -1.0f;
-		}
-		if (progress <= 0.0f) {
-			progress = 0.0f;
-			progress_dir *= -1.0f;
-		}
-		int pv = static_cast<int>(progress * 100);
+		game::Player* player = m_Client->GetGame()->GetPlayerById(m_Client->GetPlayerID());
 
-		ImGui::Text("PV : %i", pv);
-		// ImGui::Dummy();
-		ImGui::ProgressBar(progress, progressSize, "");
+		if (player) {
+			ImGui::Text("PV : %.0f", player->GetHP());
+
+			ImGui::ProgressBar(static_cast<float>(player->GetHP() / 100.0f), progressSize, "");
+		}
 	}
 	ImGui::EndGroup();
 	ImGui::EndGroup();

src/client/render/BulletRenderer.cpp

@@ -1,7 +1,7 @@
 #include "client/render/BulletRenderer.h"
 
+#include "blitz/maths/Maths.h"
 #include "blitz/misc/Log.h"
-#include "blitz/misc/Maths.h"
 #include "blitz/misc/Test.h"
 #include "client/render/Camera.h"
 #include "client/render/OpenGL.h"

src/client/render/Camera.cpp

@@ -1,7 +1,7 @@
 #include "client/render/Camera.h"
 
 #include "blitz/game/Player.h"
-#include "blitz/misc/Maths.h"
+#include "blitz/maths/Maths.h"
 #include "imgui.h"
 
 namespace blitz {

src/client/render/MainRenderer.cpp

@@ -1,9 +1,9 @@
 #include "client/render/MainRenderer.h"
 
+#include "blitz/maths/Maths.h"
 #include "blitz/misc/Easing.h"
 #include "blitz/misc/Format.h"
 #include "blitz/misc/Log.h"
-#include "blitz/misc/Maths.h"
 #include "blitz/misc/Test.h"
 #include "blitz/misc/Time.h"
 #include "client/Client.h"

src/server/Server.cpp

@@ -170,6 +170,7 @@ void Server::AddBot() {
 	// set the bot at a random location to be able to see several of them
 	game::Player* botPlayer = m_Game.GetPlayerById(botID);
 	botPlayer->SetPosition({utils::GetRandomReal(-10.0f, 10.0f), 0.0f, utils::GetRandomReal(-10.0f, 10.0f)});
+	botPlayer->SetBot();
 }
 
 }  // namespace server

src/server/ServerConnexion.cpp

@@ -134,6 +134,8 @@ void ServerConnexion::HandlePacket(const protocol::PlayerPositionAndRotationPack
 void ServerConnexion::HandlePacket(const protocol::PlayerShootPacket* packet) {
 	protocol::PlayerShootPacket broadcastShoot(packet->GetPosition(), packet->GetYaw(), packet->GetPitch(), m_Player->GetID());
 	m_Server->BroadcastPacket(&broadcastShoot);
+
+	m_Server->GetGame().CheckShoot(m_Player->GetID(), packet->GetPosition(), packet->GetYaw(), packet->GetPitch());
 }
 
 void ServerConnexion::Start() {

src/server/game/ServerGame.cpp

@@ -1,11 +1,15 @@
 #include "server/game/ServerGame.h"
 
+#include "blitz/maths/Physics.h"
 #include "blitz/misc/Format.h"
 #include "blitz/misc/Log.h"
+#include "blitz/misc/Random.h"
 #include "blitz/protocol/packets/ChatPacket.h"
 #include "blitz/protocol/packets/PlayerJoinPacket.h"
 #include "blitz/protocol/packets/PlayerPositionAndRotationPacket.h"
+#include "blitz/protocol/packets/UpdateHealthPacket.h"
 #include "server/Server.h"
+#include <cmath>
 
 namespace blitz {
 namespace server {
@@ -27,6 +31,33 @@ void ServerGame::SendPlayerPositions() {
 	}
 }
 
+void ServerGame::CheckShoot(game::PlayerID shooter, Vec3f position, float yaw, float pitch) {
+	maths::Ray shootRay;
+	shootRay.origin = position + Vec3f{0.0, 1.75, 0.0};
+	shootRay.direction = {
+		std::cos(yaw) * std::cos(pitch),
+		std::sin(pitch),
+		std::sin(yaw) * std::cos(pitch),
+	};
+
+	static const maths::AABB playerStaticAABB = {Vec3f{-0.5f, 0.0f, -0.5f}, Vec3f{0.5f, 1.8f, 0.5f}};
+
+	bool shootLanded = false;
+
+	game::Player* shooterPlayer = GetPlayerById(shooter);
+
+	for (auto& [playerId, player] : GetPlayers()) {
+		if (playerId != shooter && maths::Intersects(shootRay, playerStaticAABB + player.GetPosition())) {
+			DamagePlayer(player, *shooterPlayer);
+			shootLanded = true;
+		}
+	}
+
+	shooterPlayer->GetStats().m_ShootCount++;
+	if (shootLanded)
+		shooterPlayer->GetStats().m_ShootSuccessCount++;
+}
+
 void ServerGame::AddPlayer(game::PlayerID player, const std::string& name) {
 	Game::AddPlayer(player, name);
 
@@ -43,5 +74,30 @@ void ServerGame::RemovePlayer(game::PlayerID player) {
 	Game::RemovePlayer(player);
 }
 
+void ServerGame::DamagePlayer(game::Player& player, game::Player& shooter) {
+	static float MAX_HP = 100;
+	static float GUN_DAMAGE = 50;
+
+	UpdateHP(player, player.GetHP() - GUN_DAMAGE);
+
+	// player is dead
+	if (player.GetHP() <= 0.0f) {
+		UpdateHP(player, MAX_HP);
+		player.GetStats().m_Deaths++;
+		shooter.GetStats().m_Kills++;
+		player.SetPosition({utils::GetRandomReal(-10.0f, 10.0f), 0.0f, utils::GetRandomReal(-10.0f, 10.0f)});
+	}
+}
+
+void ServerGame::UpdateHP(game::Player& player, float newHP) {
+	player.SetHP(newHP);
+
+	if (player.IsBot())
+		return;
+
+	protocol::UpdateHealthPacket packet(player.GetHP());
+	m_Server->GetConnexions().at(player.GetID())->SendPacket(&packet);
+}
+
 }  // namespace server
 }  // namespace blitz

test/test_intersects.cpp

@@ -0,0 +1,105 @@
+#include "blitz/misc/Test.h"
+
+#include "blitz/maths/Physics.h"
+#include "blitz/misc/Log.h"
+#include "blitz/misc/Format.h"
+#include <iostream>
+#include <ostream>
+#include <limits>
+
+using namespace blitz;
+using namespace maths;
+
+#define let auto // sexy boiiii
+
+static void test_left() {
+    let box = AABB { {-1.0f, -1.0f, -1.0f}, {1.0f, 1.0f, 1.0f} };
+    let ray = Ray { {-2.0f, 0.0f, 0.0f}, {1.0f, 0.0f, 0.0f} };
+
+    blitz_test_assert(Intersects(ray, box));
+}
+
+static void test_right() {
+    let box = AABB { {-1.0f, -1.0f, -1.0f}, {1.0f, 1.0f, 1.0f} };
+    let ray = Ray { {2.0f, 0.0f, 0.0f}, {-1.0f, 0.0f, 0.0f} };
+
+    blitz_test_assert(Intersects(ray, box));
+}
+
+static void test_forward() {
+    let box = AABB { {-1.0f, -1.0f, -1.0f}, {1.0f, 1.0f, 1.0f} };
+    let ray = Ray { {0.0f, 2.0f, 0.0f}, {0.0f, -1.0f, 0.0f} };
+
+    blitz_test_assert(Intersects(ray, box));
+}
+
+static void test_backward() {
+    let box = AABB { {-1.0f, -1.0f, -1.0f}, {1.0f, 1.0f, 1.0f} };
+    let ray = Ray { {0.0f, -2.0f, 0.0f}, {0.0f, 1.0f, 0.0f} };
+
+    blitz_test_assert(Intersects(ray, box));
+}
+
+static void test_above() {
+    let box = AABB { {-1.0f, -1.0f, -1.0f}, {1.0f, 1.0f, 1.0f} };
+    let ray = Ray { {0.0f, 0.0f, 2.0f}, {0.0f, 0.0f, -1.0f} };
+
+    blitz_test_assert(Intersects(ray, box));
+}
+
+static void test_below() {
+    let box = AABB { {-1.0f, -1.0f, -1.0f}, {1.0f, 1.0f, 1.0f} };
+    let ray = Ray { {0.0f, 0.0f, -2.0f}, {0.0f, 0.0f, 1.0f} };
+
+    blitz_test_assert(Intersects(ray, box));
+}
+
+static void test_shifted() {
+    let box = AABB { {-1.0f, -1.0f, -1.0f}, {1.0f, 1.0f, 1.0f} };
+    let ray = Ray { {-3.0f, 0.0f, 100.0f}, {1.0f, 0.0f, 0.0f} };
+
+    blitz_test_assert(!Intersects(ray, box));
+}
+
+static void test_corner_inside() {
+    let box = AABB { {0.0f, 0.0f, 0.0f}, {1.0f, 1.0f, 1.0f} };
+    let ray = Ray { {0.0f, 0.0f, 0.0f}, {0.5f, 0.5f, 0.5f} };
+
+    blitz_test_assert(Intersects(ray, box));
+}
+
+static void test_corner_inside_weird() {
+    let box = AABB { {0.0f, 0.0f, 0.0f}, {1.0f, 1.0f, 1.0f} };
+    let ray = Ray { {0.0f, 0.0f, 0.0f}, {1.0f, 1.0f, 1.0f} };
+
+    blitz_test_assert(Intersects(ray, box));
+}
+
+static void test_corner_inside_opposite_big() {
+    let box = AABB { {0.0f, 0.0f, 0.0f}, {1.0f, 1.0f, 1.0f} };
+    let ray = Ray { {0.0f, 0.0f, 0.0f}, {1.5f, 1.5f, 1.5f} };
+
+    blitz_test_assert(Intersects(ray, box));
+}
+
+static void test_corner_inside_opposite_weird() {
+    let box = AABB { {0.0f, 0.0f, 0.0f}, {1.0f, 1.0f, 1.0f} };
+    let ray = Ray { {0.4f, 0.4f, 0.4f}, {-1.0f, -1.0f, -1.0f} };
+
+    blitz_test_assert(Intersects(ray, box));
+}
+
+int main(int argc, const char* args[]) {
+    test_left();
+    test_right();
+    test_forward();
+    test_backward();
+    test_below();
+    test_above();
+    test_shifted();
+    test_corner_inside();
+    test_corner_inside_weird();
+    test_corner_inside_opposite_big();
+    test_corner_inside_opposite_weird();
+    return BLITZ_TEST_SUCCESSFUL;
+}

test/test_vector.cpp

@@ -1,6 +1,6 @@
 #include "blitz/misc/Test.h"
 
-#include "blitz/common/Vector.h"
+#include "blitz/maths/Vector.h"
 
 using namespace blitz;