#include "GameState.hpp"
#include "Event.hpp"
#include <iomanip>
GameState::GameState(std::shared_ptr<NetworkClient> networkClient) : nc(networkClient) {
Front = glm::vec3(0.0f, 0.0f, -1.0f);
this->SetPosition(glm::vec3(0.0f, 0.0f, 3.0f));
this->WorldUp = glm::vec3(0.0f, 1.0f, 0.0f);
}
void GameState::Update(float deltaTime) {
if (g_IsGameStarted) {
std::chrono::steady_clock clock;
static auto timeOfPreviousSendedPacket(clock.now());
auto delta = clock.now() - timeOfPreviousSendedPacket;
using namespace std::chrono_literals;
if (delta >= 50ms) {
auto packetToSend = std::make_shared<PacketPlayerPositionAndLookSB>(g_PlayerX, g_PlayerY, g_PlayerZ,
g_PlayerYaw,
g_PlayerPitch, g_OnGround);
nc->SendPacket(packetToSend);
timeOfPreviousSendedPacket = clock.now();
}
const float gravity = -9.8f;
g_PlayerVelocityY += gravity * deltaTime;
bool isCollides = world.isPlayerCollides(g_PlayerX, g_PlayerY + g_PlayerVelocityY * deltaTime,
g_PlayerZ);
if (!isCollides) {
g_PlayerY += g_PlayerVelocityY * deltaTime;
g_OnGround = false;
} else {
g_PlayerVelocityY = 0;
if (g_OnGround == false) {
auto updatePacket = std::make_shared<PacketPlayerPosition>(g_PlayerX, g_PlayerY, g_PlayerZ, true);
nc->SendPacket(updatePacket);
}
g_OnGround = true;
}
isCollides = world.isPlayerCollides(g_PlayerX + g_PlayerVelocityX * deltaTime, g_PlayerY,
g_PlayerZ + g_PlayerVelocityZ * deltaTime);
if (!isCollides) {
g_PlayerX += g_PlayerVelocityX * deltaTime;
g_PlayerZ += g_PlayerVelocityZ * deltaTime;
}
const float AirResistance = 10.0f;
glm::vec3 vel(g_PlayerVelocityX, 0, g_PlayerVelocityZ);
glm::vec3 resistForce = -vel * AirResistance * deltaTime;
vel += resistForce;
g_PlayerVelocityX = vel.x;
g_PlayerVelocityZ = vel.z;
world.UpdatePhysics(deltaTime);
}
}
void GameState::UpdatePacket()
{
//Packet handling
auto ptr = nc->ReceivePacket();
while (ptr) {
switch ((PacketNamePlayCB)ptr->GetPacketId()) {
case SpawnObject: {
auto packet = std::static_pointer_cast<PacketSpawnObject>(ptr);
Entity entity = CreateObject(static_cast<ObjectType>(packet->Type));
entity.entityId = packet->EntityId;
entity.pos = VectorF(packet->X, packet->Y, packet->Z);
entity.uuid = packet->ObjectUuid;
entity.vel = Entity::DecodeVelocity(packet->VelocityX, packet->VelocityY, packet->VelocityZ);
entity.yaw = packet->Yaw / 256.0;
entity.pitch = packet->Pitch / 256.0;
entity.renderColor = glm::vec3(0,1,0);
world.AddEntity(entity);
EventAgregator::PushEvent(EventType::EntityChanged, EntityChangedData{ entity.entityId });
break;
}
case SpawnExperienceOrb:
break;
case SpawnGlobalEntity:
break;
case SpawnMob: {
auto packet = std::static_pointer_cast<PacketSpawnObject>(ptr);
Entity entity;
entity.entityId = packet->EntityId;
entity.pos = VectorF(packet->X, packet->Y, packet->Z);
entity.uuid = packet->ObjectUuid;
entity.vel = Entity::DecodeVelocity(packet->VelocityX, packet->VelocityY, packet->VelocityZ);
entity.yaw = packet->Yaw / 256.0;
entity.pitch = packet->Pitch / 256.0;
entity.renderColor = glm::vec3(0,0,1);
world.AddEntity(entity);
EventAgregator::PushEvent(EventType::EntityChanged, EntityChangedData{ entity.entityId });
break;
}
case SpawnPainting:
break;
case SpawnPlayer: {
auto packet = std::static_pointer_cast<PacketSpawnPlayer>(ptr);
Entity entity;
entity.entityId = packet->EntityId;
entity.pos = VectorF(packet->X, packet->Y, packet->Z);
entity.uuid = packet->PlayerUuid;
entity.yaw = packet->Yaw / 256.0;
entity.pitch = packet->Pitch / 256.0;
entity.renderColor = glm::vec3(1, 0, 0);
entity.height = 1.8;
entity.width = 0.6;
world.AddEntity(entity);
EventAgregator::PushEvent(EventType::EntityChanged, EntityChangedData{ entity.entityId });
break;
}
case AnimationCB:
break;
case Statistics:
break;
case BlockBreakAnimation:
break;
case UpdateBlockEntity:
break;
case BlockAction:
break;
case BlockChange: {
auto packet = std::static_pointer_cast<PacketBlockChange>(ptr);
world.ParseChunkData(packet);
break;
}
case BossBar:
break;
case ServerDifficulty:
break;
case TabCompleteCB:
break;
case ChatMessageCB:
break;
case MultiBlockChange: {
auto packet = std::static_pointer_cast<PacketMultiBlockChange>(ptr);
world.ParseChunkData(packet);
break;
}
case ConfirmTransactionCB: {
auto packet = std::static_pointer_cast<PacketConfirmTransactionCB>(ptr);
if (packet->WindowId == 0) {
try {
playerInventory.ConfirmTransaction(*packet);
} catch (std::exception &e) {
EventAgregator::PushEvent(EventType::Disconnect, DisconnectData{ "Transaction failed" });
}
}
break;
}
case CloseWindowCB:
break;
case OpenWindow: {
auto packet = std::static_pointer_cast<PacketOpenWindow>(ptr);
LOG(INFO) << "Open new window " << packet->WindowTitle << ": " << packet->WindowId;
break;
}
case WindowItems: {
auto packet = std::static_pointer_cast<PacketWindowItems>(ptr);
if (packet->WindowId == 0) {
playerInventory.WindowId = 0;
playerInventory.slots = packet->SlotData;
}
break;
}
case WindowProperty:
break;
case SetSlot: {
auto packet = std::static_pointer_cast<PacketSetSlot>(ptr);
if (packet->WindowId == 0) {
playerInventory.slots[packet->Slot] = packet->SlotData;
}
break;
}
case SetCooldown:
break;
case PluginMessageCB:
break;
case NamedSoundEffect:
break;
case DisconnectPlay: {
auto packet = std::static_pointer_cast<PacketDisconnectPlay>(ptr);
LOG(INFO) << "Disconnect reason: " << packet->Reason;
EventAgregator::PushEvent(EventType::Disconnect, DisconnectData{ packet->Reason });
break;
}
case EntityStatus:
break;
case Explosion:
break;
case UnloadChunk: {
auto packet = std::static_pointer_cast<PacketUnloadChunk>(ptr);
world.ParseChunkData(packet);
break;
}
case ChangeGameState:
break;
case KeepAliveCB:
LOG(WARNING) << "Receive KeepAlive packet in GameState handler";
break;
case ChunkData: {
auto packet = std::static_pointer_cast<PacketChunkData>(ptr);
world.ParseChunkData(packet);
break;
}
case Effect:
break;
case Particle:
break;
case JoinGame: {
auto packet = std::static_pointer_cast<PacketJoinGame>(ptr);
g_PlayerEid = packet->EntityId;
g_Gamemode = (packet->Gamemode & 0b11111011);
g_Dimension = packet->Dimension;
g_Difficulty = packet->Difficulty;
g_MaxPlayers = packet->MaxPlayers;
g_LevelType = packet->LevelType;
g_ReducedDebugInfo = packet->ReducedDebugInfo;
LOG(INFO) << "Gamemode is " << g_Gamemode << ", Difficulty is " << (int)g_Difficulty
<< ", Level Type is " << g_LevelType;
EventAgregator::PushEvent(EventType::PlayerConnected, PlayerConnectedData{ gs });
break;
}
case Map:
break;
case EntityRelativeMove: {
auto packet = std::static_pointer_cast<PacketEntityRelativeMove>(ptr);
Entity& entity = world.GetEntity(packet->EntityId);
entity.pos = entity.pos + Entity::DecodeDeltaPos(packet->DeltaX, packet->DeltaY, packet->DeltaZ);
if (entity.entityId != 0)
LOG(INFO) << "M: " << packet->EntityId;
break;
}
case EntityLookAndRelativeMove: {
auto packet = std::static_pointer_cast<PacketEntityLookAndRelativeMove>(ptr);
Entity& entity = world.GetEntity(packet->EntityId);
entity.pos = entity.pos + Entity::DecodeDeltaPos(packet->DeltaX, packet->DeltaY, packet->DeltaZ);
entity.pitch = packet->Pitch / 256.0;
entity.yaw = packet->Yaw / 256.0;
break;
}
case EntityLook: {
auto packet = std::static_pointer_cast<PacketEntityLook>(ptr);
Entity& entity = world.GetEntity(packet->EntityId);
entity.pitch = packet->Pitch / 256.0;
entity.yaw = packet->Yaw / 256.0;
//LOG(INFO) << "L: " << packet->EntityId;
break;
}
case EntityCB:
break;
case VehicleMove:
break;
case OpenSignEditor:
break;
case PlayerAbilitiesCB:
break;
case CombatEvent:
break;
case PlayerListItem:
break;
case PlayerPositionAndLookCB: {
auto packet = std::static_pointer_cast<PacketPlayerPositionAndLookCB>(ptr);
if ((packet->Flags & 0x10) != 0) {
g_PlayerPitch += packet->Pitch;
}
else {
g_PlayerPitch = packet->Pitch;
};
if ((packet->Flags & 0x08) != 0) {
g_PlayerYaw += packet->Yaw;
}
else {
g_PlayerYaw = packet->Yaw;
}
if ((packet->Flags & 0x01) != 0) {
g_PlayerX += packet->X;
}
else {
g_PlayerX = packet->X;
}
if ((packet->Flags & 0x02) != 0) {
g_PlayerY += packet->Y;
}
else {
g_PlayerY = packet->Y;
}
if ((packet->Flags & 0x04) != 0) {
g_PlayerZ += packet->Z;
}
else {
g_PlayerZ = packet->Z;
}
EventAgregator::PushEvent(EventType::PlayerPosChanged, PlayerPosChangedData{ VectorF(g_PlayerX,g_PlayerY,g_PlayerZ) });
LOG(INFO) << "PlayerPos is " << g_PlayerX << ", " << g_PlayerY << ", " << g_PlayerZ << "\t\tAngle: "
<< g_PlayerYaw << "," << g_PlayerPitch;
if (!g_IsGameStarted) {
LOG(INFO) << "Game is started";
EventAgregator::PushEvent(EventType::RemoveLoadingScreen, RemoveLoadingScreenData{});
}
g_IsGameStarted = true;
auto packetResponse = std::make_shared<PacketTeleportConfirm>(packet->TeleportId);
auto packetPerformRespawn = std::make_shared<PacketClientStatus>(0);
nc->SendPacket(packetResponse);
nc->SendPacket(packetPerformRespawn);
break;
}
case UseBed:
break;
case UnlockRecipes:
break;
case DestroyEntities: {
auto packet = std::static_pointer_cast<PacketDestroyEntities>(ptr);
for (unsigned int entityId : packet->EntityIds) {
world.DeleteEntity(entityId);
}
break;
}
case RemoveEntityEffect:
break;
case ResourcePackSend:
break;
case Respawn:
break;
case EntityHeadLook:
break;
case SelectAdvancementTab:
break;
case WorldBorder:
break;
case Camera:
break;
case HeldItemChangeCB:
break;
case DisplayScoreboard:
break;
case EntityMetadata:
break;
case AttachEntity:
break;
case EntityVelocity: {
auto packet = std::static_pointer_cast<PacketEntityVelocity>(ptr);
Entity& entity = world.GetEntity(packet->EntityId);
entity.vel = Entity::DecodeVelocity(packet->VelocityX, packet->VelocityY, packet->VelocityZ);
break;
}
case EntityEquipment:
break;
case SetExperience:
break;
case UpdateHealth: {
auto packet = std::static_pointer_cast<PacketUpdateHealth>(ptr);
g_PlayerHealth = packet->Health;
if (g_PlayerHealth <= 0) {
LOG(INFO) << "Player is dead. Respawning...";
auto packetPerformRespawn = std::make_shared<PacketClientStatus>(0);
nc->SendPacket(packetPerformRespawn);
}
break;
}
case ScoreboardObjective:
break;
case SetPassengers:
break;
case Teams:
break;
case UpdateScore:
break;
case SpawnPosition: {
auto packet = std::static_pointer_cast<PacketSpawnPosition>(ptr);
g_SpawnPosition = packet->Location;
LOG(INFO) << "Spawn position is " << g_SpawnPosition.x << " " << g_SpawnPosition.y << " " << g_SpawnPosition.z;
break;
}
case TimeUpdate: {
auto packet = std::static_pointer_cast<PacketTimeUpdate>(ptr);
WorldAge = packet->WorldAge;
TimeOfDay = packet->TimeOfDay;
break;
}
case Title:
break;
case SoundEffect:
break;
case PlayerListHeaderAndFooter:
break;
case CollectItem:
break;
case EntityTeleport: {
auto packet = std::static_pointer_cast<PacketEntityTeleport>(ptr);
Entity& entity = world.GetEntity(packet->EntityId);
entity.pos = VectorF(packet->X, packet->Y, packet->Z);
entity.pitch = packet->Pitch / 256.0;
entity.yaw = packet->Yaw / 256.0;
break;
}
case Advancements:
break;
case EntityProperties:
break;
case EntityEffect:
break;
}
ptr = nc->ReceivePacket();
}
while (!playerInventory.pendingTransactions.empty()) {
nc->SendPacket(std::make_shared<PacketClickWindow>(playerInventory.pendingTransactions.front()));
playerInventory.pendingTransactions.pop();
}
}
void GameState::HandleMovement(GameState::Direction direction, float deltaTime) {
if (!g_IsGameStarted)
return;
const float PlayerSpeed = 40.0;
float velocity = PlayerSpeed * deltaTime;
glm::vec3 vel(g_PlayerVelocityX, g_PlayerVelocityY, g_PlayerVelocityZ);
glm::vec3 front(cos(glm::radians(this->Yaw())) * cos(glm::radians(this->Pitch())), 0,
sin(glm::radians(this->Yaw())) * cos(glm::radians(this->Pitch())));
front = glm::normalize(front);
glm::vec3 right = glm::normalize(glm::cross(front, this->WorldUp));
switch (direction) {
case FORWARD:
vel += front * velocity;
break;
case BACKWARD:
vel -= front * velocity;
break;
case RIGHT:
vel += right * velocity;
break;
case LEFT:
vel -= right * velocity;
break;
case JUMP:
if (g_OnGround) {
vel.y += 5;
g_OnGround = false;
}
break;
}
g_PlayerVelocityX = vel.x;
g_PlayerVelocityY = vel.y;
g_PlayerVelocityZ = vel.z;
}
void GameState::HandleRotation(double yaw, double pitch) {
if (!g_IsGameStarted)
return;
this->SetYaw(Yaw() + yaw);
this->SetPitch(Pitch() + pitch);
if (this->Pitch() > 89.0f)
this->SetPitch(89.0f);
if (this->Pitch() < -89.0f)
this->SetPitch(-89.0f);
this->updateCameraVectors();
auto updatePacket = std::make_shared<PacketPlayerLook>(g_PlayerYaw, g_PlayerPitch, g_OnGround);
nc->SendPacket(updatePacket);
}
glm::mat4 GameState::GetViewMatrix() {
updateCameraVectors();
auto pos = this->Position();
pos.y += 1.62;
return glm::lookAt(pos, pos + this->Front, this->Up);
}
void GameState::updateCameraVectors() {
glm::vec3 front;
front.x = cos(glm::radians(this->Yaw())) * cos(glm::radians(this->Pitch()));
front.y = sin(glm::radians(this->Pitch()));
front.z = sin(glm::radians(this->Yaw())) * cos(glm::radians(this->Pitch()));
this->Front = glm::normalize(front);
this->Right = glm::normalize(glm::cross(this->Front, this->WorldUp));
this->Up = glm::normalize(glm::cross(this->Right, this->Front));
}
float GameState::Yaw() {
return g_PlayerYaw + 90;
}
float GameState::Pitch() {
return -g_PlayerPitch;
}
void GameState::SetYaw(float yaw) {
g_PlayerYaw = yaw - 90;
}
void GameState::SetPitch(float pitch) {
g_PlayerPitch = -pitch;
}
glm::vec3 GameState::Position() {
return glm::vec3(g_PlayerX, g_PlayerY, g_PlayerZ);
}
void GameState::SetPosition(glm::vec3 Position) {
g_PlayerX = Position.x;
g_PlayerY = Position.y;
g_PlayerZ = Position.z;
}
