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Packets.c
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Packets.c
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// Copyright DarkNeutrino 2021
#include "../Extern/libmapvxl/libmapvxl.h"
#include "Commands.h"
#include "ParseConvert.h"
#include "Protocol.h"
#include "Structs.h"
#include "Util/Compress.h"
#include "Util/DataStream.h"
#include "Util/Enums.h"
#include "Util/Line.h"
#include "Util/Physics.h"
#include "Util/Queue.h"
#include "Util/Types.h"
#include "Util/Utlist.h"
#include <ctype.h>
#include <enet/enet.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#ifdef _WIN32
#define strlcat(dst, src, siz) strcat_s(dst, siz, src)
#else
#include <bsd/string.h>
#endif
inline static uint8 allowShot(Server* server,
uint8 playerID,
uint8 hitPlayerID,
uint64 timeNow,
float distance,
long* x,
long* y,
long* z,
Vector3f shotPos,
Vector3f shotOrien,
Vector3f hitPos,
Vector3f shotEyePos)
{
uint8 ret = 0;
if (server->player[playerID].primary_fire &&
((server->player[playerID].item == 0 &&
diffIsOlderThen(timeNow, &server->player[playerID].timers.sinceLastShot, NANO_IN_MILLI * 100)) ||
(server->player[playerID].item == 2 && server->player[playerID].weapon == 0 &&
diffIsOlderThen(timeNow, &server->player[playerID].timers.sinceLastShot, NANO_IN_MILLI * 500)) ||
(server->player[playerID].item == 2 && server->player[playerID].weapon == 1 &&
diffIsOlderThen(timeNow, &server->player[playerID].timers.sinceLastShot, NANO_IN_MILLI * 110)) ||
(server->player[playerID].item == 2 && server->player[playerID].weapon == 2 &&
diffIsOlderThen(timeNow, &server->player[playerID].timers.sinceLastShot, NANO_IN_MILLI * 1000))) &&
server->player[playerID].alive && server->player[hitPlayerID].alive &&
(server->player[playerID].team != server->player[hitPlayerID].team ||
server->player[playerID].allowTeamKilling) &&
(server->player[playerID].allowKilling && server->globalAK) && validateHit(shotPos, shotOrien, hitPos, 5) &&
(castRay(
server, shotEyePos.x, shotEyePos.y, shotEyePos.z, shotOrien.x, shotOrien.y, shotOrien.z, distance, x, y, z) ==
0 ||
castRay(server,
shotEyePos.x,
shotEyePos.y,
shotEyePos.z - 1,
shotOrien.x,
shotOrien.y,
shotOrien.z,
distance,
x,
y,
z) == 0))
{
ret = 1;
}
return ret;
}
void sendRestock(Server* server, uint8 playerID)
{
if (server->protocol.numPlayers == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 2, ENET_PACKET_FLAG_RELIABLE);
DataStream stream = {packet->data, packet->dataLength, 0};
WriteByte(&stream, PACKET_TYPE_RESTOCK);
WriteByte(&stream, playerID);
if (enet_peer_send(server->player[playerID].peer, 0, packet) != 0) {
enet_packet_destroy(packet);
}
}
void sendMoveObject(Server* server, uint8 object, uint8 team, Vector3f pos)
{
if (server->protocol.numPlayers == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 15, ENET_PACKET_FLAG_RELIABLE);
DataStream stream = {packet->data, packet->dataLength, 0};
WriteByte(&stream, PACKET_TYPE_MOVE_OBJECT);
WriteByte(&stream, object);
WriteByte(&stream, team);
WriteFloat(&stream, pos.x);
WriteFloat(&stream, pos.y);
WriteFloat(&stream, pos.z);
uint8 sent = 0;
for (int player = 0; player < server->protocol.maxPlayers; ++player) {
if (isPastStateData(server, player)) {
if (enet_peer_send(server->player[player].peer, 0, packet) == 0) {
sent = 1;
}
}
}
if (sent == 0) {
enet_packet_destroy(packet);
}
}
void sendIntelCapture(Server* server, uint8 playerID, uint8 winning)
{
if (server->protocol.numPlayers == 0) {
return;
}
uint8 team;
if (server->player[playerID].team == 0) {
team = 1;
} else {
team = 0;
}
if (server->player[playerID].hasIntel == 0 || server->protocol.gameMode.intelHeld[team] == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 3, ENET_PACKET_FLAG_RELIABLE);
DataStream stream = {packet->data, packet->dataLength, 0};
WriteByte(&stream, PACKET_TYPE_INTEL_CAPTURE);
WriteByte(&stream, playerID);
WriteByte(&stream, winning);
server->player[playerID].hasIntel = 0;
server->protocol.gameMode.intelHeld[team] = 0;
uint8 sent = 0;
for (int player = 0; player < server->protocol.maxPlayers; ++player) {
if (isPastStateData(server, player)) {
if (enet_peer_send(server->player[player].peer, 0, packet) == 0) {
sent = 1;
}
}
}
if (sent == 0) {
enet_packet_destroy(packet);
}
}
void sendIntelPickup(Server* server, uint8 playerID)
{
if (server->protocol.numPlayers == 0) {
return;
}
uint8 team;
if (server->player[playerID].team == 0) {
team = 1;
} else {
team = 0;
}
if (server->player[playerID].hasIntel == 1 || server->protocol.gameMode.intelHeld[team] == 1) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 2, ENET_PACKET_FLAG_RELIABLE);
DataStream stream = {packet->data, packet->dataLength, 0};
WriteByte(&stream, PACKET_TYPE_INTEL_PICKUP);
WriteByte(&stream, playerID);
server->player[playerID].hasIntel = 1;
server->protocol.gameMode.playerIntelTeam[server->player[playerID].team] = playerID;
server->protocol.gameMode.intelHeld[team] = 1;
uint8 sent = 0;
for (int player = 0; player < server->protocol.maxPlayers; ++player) {
if (isPastStateData(server, player)) {
if (enet_peer_send(server->player[player].peer, 0, packet) == 0) {
sent = 1;
}
}
}
if (sent == 0) {
enet_packet_destroy(packet);
}
}
void sendIntelDrop(Server* server, uint8 playerID)
{
if (server->protocol.numPlayers == 0) {
return;
}
uint8 team;
if (server->player[playerID].team == 0) {
team = 1;
} else {
team = 0;
}
if (server->player[playerID].hasIntel == 0 || server->protocol.gameMode.intelHeld[team] == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 14, ENET_PACKET_FLAG_RELIABLE);
DataStream stream = {packet->data, packet->dataLength, 0};
WriteByte(&stream, PACKET_TYPE_INTEL_DROP);
WriteByte(&stream, playerID);
if (server->protocol.currentGameMode == GAME_MODE_BABEL) {
WriteFloat(&stream, (float) server->map.map.MAP_X_MAX / 2);
WriteFloat(&stream, (float) server->map.map.MAP_Y_MAX / 2);
WriteFloat(
&stream,
(float) mapvxlFindTopBlock(&server->map.map, server->map.map.MAP_X_MAX / 2, server->map.map.MAP_Y_MAX / 2));
server->protocol.gameMode.intel[team].x = (float) server->map.map.MAP_X_MAX / 2;
server->protocol.gameMode.intel[team].y = (float) server->map.map.MAP_Y_MAX / 2;
server->protocol.gameMode.intel[team].z =
mapvxlFindTopBlock(&server->map.map, server->map.map.MAP_X_MAX / 2, server->map.map.MAP_Y_MAX / 2);
server->protocol.gameMode.intel[server->player[playerID].team] = server->protocol.gameMode.intel[team];
sendMoveObject(
server, server->player[playerID].team, server->player[playerID].team, server->protocol.gameMode.intel[team]);
} else {
WriteFloat(&stream, server->player[playerID].movement.position.x);
WriteFloat(&stream, server->player[playerID].movement.position.y);
WriteFloat(&stream,
(float) mapvxlFindTopBlock(&server->map.map,
server->player[playerID].movement.position.x,
server->player[playerID].movement.position.y));
server->protocol.gameMode.intel[team].x = (int) server->player[playerID].movement.position.x;
server->protocol.gameMode.intel[team].y = (int) server->player[playerID].movement.position.y;
server->protocol.gameMode.intel[team].z = mapvxlFindTopBlock(
&server->map.map, server->player[playerID].movement.position.x, server->player[playerID].movement.position.y);
}
server->player[playerID].hasIntel = 0;
server->protocol.gameMode.playerIntelTeam[server->player[playerID].team] = 32;
server->protocol.gameMode.intelHeld[team] = 0;
LOG_INFO("Dropping intel at X: %d, Y: %d, Z: %d",
(int) server->protocol.gameMode.intel[team].x,
(int) server->protocol.gameMode.intel[team].y,
(int) server->protocol.gameMode.intel[team].z);
uint8 sent = 0;
for (int player = 0; player < server->protocol.maxPlayers; ++player) {
if (isPastStateData(server, player)) {
if (enet_peer_send(server->player[player].peer, 0, packet) == 0) {
sent = 1;
}
}
}
if (sent == 0) {
enet_packet_destroy(packet);
}
}
void sendGrenade(Server* server, uint8 playerID, float fuse, Vector3f position, Vector3f velocity)
{
if (server->protocol.numPlayers == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 30, ENET_PACKET_FLAG_RELIABLE);
DataStream stream = {packet->data, packet->dataLength, 0};
WriteByte(&stream, PACKET_TYPE_GRENADE_PACKET);
WriteByte(&stream, playerID);
WriteFloat(&stream, fuse);
WriteFloat(&stream, position.x);
WriteFloat(&stream, position.y);
WriteFloat(&stream, position.z);
WriteFloat(&stream, velocity.x);
WriteFloat(&stream, velocity.y);
WriteFloat(&stream, velocity.z);
if (SendPacketExceptSender(server, packet, playerID) == 0) {
enet_packet_destroy(packet);
}
}
void sendPlayerLeft(Server* server, uint8 playerID)
{
char ipString[17];
formatIPToString(ipString, server->player[playerID].ipStruct);
LOG_INFO("Player %s (%s, #%hhu) disconnected", server->player[playerID].name, ipString, playerID);
if (server->protocol.numPlayers == 0) {
return;
}
for (uint8 i = 0; i < server->protocol.maxPlayers; ++i) {
if (i != playerID && isPastStateData(server, i)) {
ENetPacket* packet = enet_packet_create(NULL, 2, ENET_PACKET_FLAG_RELIABLE);
DataStream stream = {packet->data, packet->dataLength, 0};
WriteByte(&stream, PACKET_TYPE_PLAYER_LEFT);
WriteByte(&stream, playerID);
if (enet_peer_send(server->player[i].peer, 0, packet) != 0) {
LOG_WARNING("Failed to send player left event");
enet_packet_destroy(packet);
}
}
}
}
void sendWeaponReload(Server* server, uint8 playerID, uint8 startAnimation, uint8 clip, uint8 reserve)
{
if (server->protocol.numPlayers == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 4, ENET_PACKET_FLAG_RELIABLE);
DataStream stream = {packet->data, packet->dataLength, 0};
WriteByte(&stream, PACKET_TYPE_WEAPON_RELOAD);
WriteByte(&stream, playerID);
if (startAnimation) {
WriteByte(&stream, clip);
WriteByte(&stream, reserve);
} else {
WriteByte(&stream, server->player[playerID].weaponClip);
WriteByte(&stream, server->player[playerID].weaponReserve);
}
if (startAnimation) {
uint8 sendSucc = 0;
for (int player = 0; player < server->protocol.maxPlayers; ++player) {
if (isPastStateData(server, player) && player != playerID) {
if (enet_peer_send(server->player[player].peer, 0, packet) == 0) {
sendSucc = 1;
}
}
}
if (sendSucc == 0) {
enet_packet_destroy(packet);
}
} else {
if (isPastJoinScreen(server, playerID)) {
if (enet_peer_send(server->player[playerID].peer, 0, packet) != 0) {
enet_packet_destroy(packet);
}
}
}
}
void sendWeaponInput(Server* server, uint8 playerID, uint8 wInput)
{
if (server->protocol.numPlayers == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 3, ENET_PACKET_FLAG_RELIABLE);
DataStream stream = {packet->data, packet->dataLength, 0};
WriteByte(&stream, PACKET_TYPE_WEAPON_INPUT);
WriteByte(&stream, playerID);
if (server->player[playerID].sprinting) {
wInput = 0;
}
WriteByte(&stream, wInput);
if (SendPacketExceptSender(server, packet, playerID) == 0) {
enet_packet_destroy(packet);
}
}
void sendSetColor(Server* server, uint8 playerID, uint8 R, uint8 G, uint8 B)
{
if (server->protocol.numPlayers == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 5, ENET_PACKET_FLAG_RELIABLE);
DataStream stream = {packet->data, packet->dataLength, 0};
WriteByte(&stream, PACKET_TYPE_SET_COLOR);
WriteByte(&stream, playerID);
WriteByte(&stream, B);
WriteByte(&stream, G);
WriteByte(&stream, R);
if (SendPacketExceptSender(server, packet, playerID) == 0) {
enet_packet_destroy(packet);
}
}
void sendSetTool(Server* server, uint8 playerID, uint8 tool)
{
if (server->protocol.numPlayers == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 3, ENET_PACKET_FLAG_RELIABLE);
DataStream stream = {packet->data, packet->dataLength, 0};
WriteByte(&stream, PACKET_TYPE_SET_TOOL);
WriteByte(&stream, playerID);
WriteByte(&stream, tool);
if (SendPacketExceptSender(server, packet, playerID) == 0) {
enet_packet_destroy(packet);
}
}
void sendBlockLine(Server* server, uint8 playerID, Vector3i start, Vector3i end)
{
if (server->protocol.numPlayers == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 26, ENET_PACKET_FLAG_RELIABLE);
DataStream stream = {packet->data, packet->dataLength, 0};
WriteByte(&stream, PACKET_TYPE_BLOCK_LINE);
WriteByte(&stream, playerID);
WriteInt(&stream, start.x);
WriteInt(&stream, start.y);
WriteInt(&stream, start.z);
WriteInt(&stream, end.x);
WriteInt(&stream, end.y);
WriteInt(&stream, end.z);
uint8 sent = 0;
for (int player = 0; player < server->protocol.maxPlayers; ++player) {
if (isPastStateData(server, player)) {
if (enet_peer_send(server->player[player].peer, 0, packet) == 0) {
sent = 1;
}
}
}
if (sent == 0) {
enet_packet_destroy(packet);
}
}
void sendBlockAction(Server* server, uint8 playerID, uint8 actionType, int X, int Y, int Z)
{
if (server->protocol.numPlayers == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 15, ENET_PACKET_FLAG_RELIABLE);
DataStream stream = {packet->data, packet->dataLength, 0};
WriteByte(&stream, PACKET_TYPE_BLOCK_ACTION);
WriteByte(&stream, playerID);
WriteByte(&stream, actionType);
WriteInt(&stream, X);
WriteInt(&stream, Y);
WriteInt(&stream, Z);
uint8 sent = 0;
for (int player = 0; player < server->protocol.maxPlayers; ++player) {
if (isPastStateData(server, player)) {
if (enet_peer_send(server->player[player].peer, 0, packet) == 0) {
sent = 1;
}
}
}
if (sent == 0) {
enet_packet_destroy(packet);
}
}
void sendStateData(Server* server, uint8 playerID)
{
if (server->protocol.numPlayers == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 104, ENET_PACKET_FLAG_RELIABLE);
DataStream stream = {packet->data, packet->dataLength, 0};
WriteByte(&stream, PACKET_TYPE_STATE_DATA);
WriteByte(&stream, playerID);
WriteColor3i(&stream, server->protocol.colorFog);
WriteColor3i(&stream, server->protocol.colorTeam[0]);
WriteColor3i(&stream, server->protocol.colorTeam[1]);
WriteArray(&stream, server->protocol.nameTeam[0], 10);
WriteArray(&stream, server->protocol.nameTeam[1], 10);
if (server->protocol.currentGameMode == 0 || server->protocol.currentGameMode == 1) {
WriteByte(&stream, server->protocol.currentGameMode);
} else {
WriteByte(&stream, 0);
}
// MODE CTF:
WriteByte(&stream, server->protocol.gameMode.score[0]); // SCORE TEAM A
WriteByte(&stream, server->protocol.gameMode.score[1]); // SCORE TEAM B
WriteByte(&stream, server->protocol.gameMode.scoreLimit); // SCORE LIMIT
server->protocol.gameMode.intelFlags = 0;
if (server->protocol.gameMode.intelHeld[0]) {
server->protocol.gameMode.intelFlags = INTEL_TEAM_B;
} else if (server->protocol.gameMode.intelHeld[1]) {
server->protocol.gameMode.intelFlags = INTEL_TEAM_A;
} else if (server->protocol.gameMode.intelHeld[0] && server->protocol.gameMode.intelHeld[1]) {
server->protocol.gameMode.intelFlags = INTEL_TEAM_BOTH;
}
WriteByte(&stream, server->protocol.gameMode.intelFlags); // INTEL FLAGS
if ((server->protocol.gameMode.intelFlags & 1) == 0) {
WriteByte(&stream, server->protocol.gameMode.playerIntelTeam[1]);
for (int i = 0; i < 11; ++i) {
WriteByte(&stream, 255);
}
} else {
WriteVector3f(&stream, server->protocol.gameMode.intel[0]);
}
if ((server->protocol.gameMode.intelFlags & 2) == 0) {
WriteByte(&stream, server->protocol.gameMode.playerIntelTeam[0]);
for (int i = 0; i < 11; ++i) {
WriteByte(&stream, 255);
}
} else {
WriteVector3f(&stream, server->protocol.gameMode.intel[1]);
}
WriteVector3f(&stream, server->protocol.gameMode.base[0]);
WriteVector3f(&stream, server->protocol.gameMode.base[1]);
if (enet_peer_send(server->player[playerID].peer, 0, packet) == 0) {
server->player[playerID].state = STATE_PICK_SCREEN;
} else {
enet_packet_destroy(packet);
}
}
void sendInputData(Server* server, uint8 playerID)
{
if (server->protocol.numPlayers == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 3, ENET_PACKET_FLAG_RELIABLE);
DataStream stream = {packet->data, packet->dataLength, 0};
WriteByte(&stream, PACKET_TYPE_INPUT_DATA);
WriteByte(&stream, playerID);
WriteByte(&stream, server->player[playerID].input);
if (SendPacketExceptSenderDistCheck(server, packet, playerID) == 0) {
enet_packet_destroy(packet);
}
}
void sendKillActionPacket(Server* server,
uint8 killerID,
uint8 playerID,
uint8 killReason,
uint8 respawnTime,
uint8 makeInvisible)
{
if (server->protocol.numPlayers == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 5, ENET_PACKET_FLAG_RELIABLE);
DataStream stream = {packet->data, packet->dataLength, 0};
WriteByte(&stream, PACKET_TYPE_KILL_ACTION);
WriteByte(&stream, playerID); // Player that died.
WriteByte(&stream, killerID); // Player that killed.
WriteByte(&stream, killReason); // Killing reason (1 is headshot)
WriteByte(&stream, respawnTime); // Time before respawn happens
uint8 sent = 0;
for (int player = 0; player < server->protocol.maxPlayers; ++player) {
uint8 isPast = isPastStateData(server, player);
if ((makeInvisible && player != playerID && isPast) || (isPast && !makeInvisible)) {
if (enet_peer_send(server->player[player].peer, 0, packet) == 0) {
sent = 1;
}
}
}
if (sent == 0) {
enet_packet_destroy(packet);
return; // Do not kill the player since sending the packet failed
}
if (!makeInvisible && server->player[playerID].isInvisible == 0) {
if (killerID != playerID) {
server->player[killerID].kills++;
}
server->player[playerID].deaths++;
server->player[playerID].alive = 0;
server->player[playerID].respawnTime = respawnTime;
server->player[playerID].timers.startOfRespawnWait = time(NULL);
server->player[playerID].state = STATE_WAITING_FOR_RESPAWN;
switch (server->player[playerID].weapon) {
case 0:
server->player[playerID].weaponReserve = 50;
server->player[playerID].weaponClip = 10;
server->player[playerID].defaultClip = RIFLE_DEFAULT_CLIP;
server->player[playerID].defaultReserve = RIFLE_DEFAULT_RESERVE;
break;
case 1:
server->player[playerID].weaponReserve = 120;
server->player[playerID].weaponClip = 30;
server->player[playerID].defaultClip = SMG_DEFAULT_CLIP;
server->player[playerID].defaultReserve = SMG_DEFAULT_RESERVE;
break;
case 2:
server->player[playerID].weaponReserve = 48;
server->player[playerID].weaponClip = 6;
server->player[playerID].defaultClip = SHOTGUN_DEFAULT_CLIP;
server->player[playerID].defaultReserve = SHOTGUN_DEFAULT_RESERVE;
break;
}
}
if (server->player[playerID].hasIntel) {
sendIntelDrop(server, playerID);
}
}
void sendSetHP(Server* server,
uint8 playerID,
uint8 hitPlayerID,
long HPChange,
uint8 typeOfDamage,
uint8 killReason,
uint8 respawnTime,
uint8 isGrenade,
Vector3f position)
{
if (server->protocol.numPlayers == 0 || server->player[hitPlayerID].team == TEAM_SPECTATOR ||
(!server->player[playerID].allowTeamKilling &&
server->player[playerID].team == server->player[hitPlayerID].team && playerID != hitPlayerID))
{
return;
}
if ((server->player[playerID].allowKilling && server->globalAK && server->player[playerID].allowKilling &&
server->player[playerID].alive) ||
typeOfDamage == 0)
{
if (HPChange > server->player[hitPlayerID].HP) {
HPChange = server->player[hitPlayerID].HP;
}
server->player[hitPlayerID].HP -= HPChange;
if (server->player[hitPlayerID].HP < 0) // We should NEVER return true here. If we do stuff is really broken
server->player[hitPlayerID].HP = 0;
else if (server->player[hitPlayerID].HP > 100) // Same as above
server->player[hitPlayerID].HP = 100;
if (server->player[hitPlayerID].HP == 0) {
server->player[hitPlayerID].alive = 0;
sendKillActionPacket(server, playerID, hitPlayerID, killReason, respawnTime, 0);
return;
}
else if (server->player[hitPlayerID].HP > 0 && server->player[hitPlayerID].HP < 100)
{
ENetPacket* packet = enet_packet_create(NULL, 15, ENET_PACKET_FLAG_RELIABLE);
DataStream stream = {packet->data, packet->dataLength, 0};
WriteByte(&stream, PACKET_TYPE_SET_HP);
WriteByte(&stream, server->player[hitPlayerID].HP);
WriteByte(&stream, typeOfDamage);
if (typeOfDamage != 0 && isGrenade == 0) {
WriteFloat(&stream, server->player[playerID].movement.position.x);
WriteFloat(&stream, server->player[playerID].movement.position.y);
WriteFloat(&stream, server->player[playerID].movement.position.z);
} else if (typeOfDamage != 0 && isGrenade == 1) {
WriteFloat(&stream, position.x);
WriteFloat(&stream, position.y);
WriteFloat(&stream, position.z);
} else {
WriteFloat(&stream, 0);
WriteFloat(&stream, 0);
WriteFloat(&stream, 0);
}
if (enet_peer_send(server->player[hitPlayerID].peer, 0, packet) != 0) {
enet_packet_destroy(packet);
}
}
}
}
void sendExistingPlayer(Server* server, uint8 playerID, uint8 otherID)
{
if (server->protocol.numPlayers == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 28, ENET_PACKET_FLAG_RELIABLE);
DataStream stream = {packet->data, packet->dataLength, 0};
WriteByte(&stream, PACKET_TYPE_EXISTING_PLAYER);
WriteByte(&stream, otherID); // ID
WriteByte(&stream, server->player[otherID].team); // TEAM
WriteByte(&stream, server->player[otherID].weapon); // WEAPON
WriteByte(&stream, server->player[otherID].item); // HELD ITEM
WriteInt(&stream, server->player[otherID].kills); // KILLS
WriteColor3i(&stream, server->player[otherID].color); // COLOR
WriteArray(&stream, server->player[otherID].name, 16); // NAME
if (enet_peer_send(server->player[playerID].peer, 0, packet) != 0) {
LOG_WARNING("Failed to send player state");
enet_packet_destroy(packet);
}
}
void sendVersionRequest(Server* server, uint8 playerID)
{
if (server->protocol.numPlayers == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 1, ENET_PACKET_FLAG_RELIABLE);
DataStream stream = {packet->data, packet->dataLength, 0};
WriteByte(&stream, PACKET_TYPE_VERSION_REQUEST);
if (enet_peer_send(server->player[playerID].peer, 0, packet) != 0) {
enet_packet_destroy(packet);
}
}
void sendMapStart(Server* server, uint8 playerID)
{
if (server->protocol.numPlayers == 0) {
return;
}
LOG_INFO("Sending map info to %s (#%hhu)", server->player[playerID].name, playerID);
ENetPacket* packet = enet_packet_create(NULL, 5, ENET_PACKET_FLAG_RELIABLE);
DataStream stream = {packet->data, packet->dataLength, 0};
WriteByte(&stream, PACKET_TYPE_MAP_START);
WriteInt(&stream, server->map.compressedSize);
if (enet_peer_send(server->player[playerID].peer, 0, packet) == 0) {
server->player[playerID].state = STATE_LOADING_CHUNKS;
// The biggest possible VXL size given the XYZ size
uint8* map = (uint8*) calloc(
server->map.map.MAP_X_MAX * server->map.map.MAP_Y_MAX * (server->map.map.MAP_Z_MAX / 2), sizeof(uint8));
// Write map to out
server->map.mapSize = mapvxlWriteMap(&server->map.map, map);
// Resize the map to the exact VXL memory size for given XYZ coordinate size
uint8* old_map;
old_map = (uint8*) realloc(map, server->map.mapSize);
if (!old_map) {
free(map);
return;
}
map = old_map;
server->map.compressedMap = CompressData(map, server->map.mapSize, DEFAULT_COMPRESSOR_CHUNK_SIZE);
server->player[playerID].queues = server->map.compressedMap;
free(map);
}
}
void sendMapChunks(Server* server, uint8 playerID)
{
if (server->player[playerID].queues == NULL) {
while (server->map.compressedMap) {
server->map.compressedMap = Pop(server->map.compressedMap);
}
sendVersionRequest(server, playerID);
server->player[playerID].state = STATE_JOINING;
LOG_INFO("Finished sending map to %s (#%hhu)", server->player[playerID].name, playerID);
} else {
ENetPacket* packet =
enet_packet_create(NULL, server->player[playerID].queues->length + 1, ENET_PACKET_FLAG_RELIABLE);
DataStream stream = {packet->data, packet->dataLength, 0};
WriteByte(&stream, PACKET_TYPE_MAP_CHUNK);
WriteArray(&stream, server->player[playerID].queues->block, server->player[playerID].queues->length);
if (enet_peer_send(server->player[playerID].peer, 0, packet) == 0) {
server->player[playerID].queues = server->player[playerID].queues->next;
}
}
}
void sendCreatePlayer(Server* server, uint8 playerID, uint8 otherID)
{
if (server->protocol.numPlayers == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 32, ENET_PACKET_FLAG_RELIABLE);
DataStream stream = {packet->data, packet->dataLength, 0};
WriteByte(&stream, PACKET_TYPE_CREATE_PLAYER);
WriteByte(&stream, otherID); // ID
WriteByte(&stream, server->player[otherID].weapon); // WEAPON
WriteByte(&stream, server->player[otherID].team); // TEAM
WriteVector3f(&stream, server->player[otherID].movement.position); // X Y Z
WriteArray(&stream, server->player[otherID].name, 16); // NAME
if (enet_peer_send(server->player[playerID].peer, 0, packet) != 0) {
LOG_WARNING("Failed to send player state");
enet_packet_destroy(packet);
}
}
void SendRespawn(Server* server, uint8 playerID)
{
for (uint8 i = 0; i < server->protocol.maxPlayers; ++i) {
if (isPastJoinScreen(server, i)) {
sendCreatePlayer(server, i, playerID);
}
}
server->player[playerID].state = STATE_READY;
}
void handleAndSendMessage(ENetEvent event, DataStream* data, Server* server, uint8 player)
{
if (server->protocol.numPlayers == 0) {
return;
}
uint32 packetSize = event.packet->dataLength + 1;
uint8 ID = ReadByte(data);
int meantfor = ReadByte(data);
uint32 length = DataLeft(data);
char* message = calloc(length + 1, sizeof(char));
ReadArray(data, message, length);
if (player != ID) {
LOG_WARNING("Assigned ID: %d doesnt match sent ID: %d in message packet", player, ID);
}
uint8 resetTime = 1;
if (!diffIsOlderThenDontUpdate(
getNanos(), server->player[player].timers.sinceLastMessageForSpam, (uint64) NANO_IN_MILLI * 2000) &&
!server->player[player].muted && server->player[player].permLevel <= 1)
{
server->player[player].spamCounter++;
if (server->player[player].spamCounter >= 5) {
sendMessageToStaff(
server, "WARNING: Player %s (#%d) is trying to spam. Muting.", server->player[player].name, player);
sendServerNotice(server,
player,
0,
"SERVER: You have been muted for excessive spam. If you feel like this is a mistake "
"contact staff via /admin command");
server->player[player].muted = 1;
server->player[player].spamCounter = 0;
}
resetTime = 0;
}
if (resetTime) {
server->player[player].timers.sinceLastMessageForSpam = getNanos();
server->player[player].spamCounter = 0;
}
if (!diffIsOlderThen(getNanos(), &server->player[player].timers.sinceLastMessage, (uint64) NANO_IN_MILLI * 400) &&
server->player[player].permLevel <= 1)
{
sendServerNotice(
server, player, 0, "WARNING: You sent last message too fast and thus was not sent out to players");
return;
}
message[length] = '\0';
char meantFor[7];
switch (meantfor) {
case 0:
snprintf(meantFor, 7, "Global");
break;
case 1:
snprintf(meantFor, 5, "Team");
break;
case 2:
snprintf(meantFor, 7, "System");
break;
}
LOG_INFO("Player %s (#%hhu) (%s) said: %s", server->player[player].name, player, meantFor, message);
uint8 sent = 0;
if (message[0] == '/') {
handleCommands(server, player, message, 0);
} else {
if (!server->player[player].muted) {
ENetPacket* packet = enet_packet_create(NULL, packetSize, ENET_PACKET_FLAG_RELIABLE);
DataStream stream = {packet->data, packet->dataLength, 0};
WriteByte(&stream, PACKET_TYPE_CHAT_MESSAGE);
WriteByte(&stream, player);
WriteByte(&stream, meantfor);
WriteArray(&stream, message, length);
for (int playerID = 0; playerID < server->protocol.maxPlayers; ++playerID) {
if (isPastJoinScreen(server, playerID) && !server->player[player].muted &&
((server->player[playerID].team == server->player[player].team && meantfor == 1) || meantfor == 0))
{
if (enet_peer_send(server->player[playerID].peer, 0, packet) == 0) {
sent = 1;
}
}
}
if (sent == 0) {
enet_packet_destroy(packet);
}
}
}
free(message);
}
void SendWorldUpdate(Server* server, uint8 playerID)
{
if (server->protocol.numPlayers == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 1 + (32 * 24), 0);
DataStream stream = {packet->data, packet->dataLength, 0};
WriteByte(&stream, PACKET_TYPE_WORLD_UPDATE);
for (uint8 j = 0; j < server->protocol.maxPlayers; ++j) {
if (playerToPlayerVisible(server, playerID, j) && server->player[j].isInvisible == 0) {
/*float dt = (getNanos() - server->globalTimers.lastUpdateTime) / 1000000000.f;
Vector3f position = {server->player[j].movement.velocity.x * dt + server->player[j].movement.position.x,
server->player[j].movement.velocity.y * dt + server->player[j].movement.position.y,
server->player[j].movement.velocity.z * dt + server->player[j].movement.position.z};
WriteVector3f(&stream, position);*/
WriteVector3f(&stream, server->player[j].movement.position);
WriteVector3f(&stream, server->player[j].movement.forwardOrientation);
} else {
Vector3f empty;
empty.x = 0;
empty.y = 0;
empty.z = 0;
WriteVector3f(&stream, empty);
WriteVector3f(&stream, empty);
}
}
if (enet_peer_send(server->player[playerID].peer, 0, packet) != 0) {
enet_packet_destroy(packet);
}
}
void SendPositionPacket(Server* server, uint8 playerID, float x, float y, float z)
{
if (server->protocol.numPlayers == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 13, ENET_PACKET_FLAG_RELIABLE);
DataStream stream = {packet->data, packet->dataLength, 0};
WriteByte(&stream, PACKET_TYPE_POSITION_DATA);
WriteFloat(&stream, x);
WriteFloat(&stream, y);
WriteFloat(&stream, z);
if (enet_peer_send(server->player[playerID].peer, 0, packet) != 0) {
enet_packet_destroy(packet);
}
}
static void receiveGrenadePacket(Server* server, uint8 playerID, DataStream* data)
{
uint8 ID = ReadByte(data);
if (playerID != ID) {
LOG_WARNING("Assigned ID: %d doesnt match sent ID: %d in grenade packet", playerID, ID);
}
if (server->player[playerID].primary_fire && server->player[playerID].item == 1) {
sendServerNotice(server, playerID, 0, "InstaSuicideNade detected. Grenade ineffective");
sendMessageToStaff(
server, 0, "Player %s (#%hhu) tried to use InstaSpadeNade", server->player[playerID].name, playerID);
return;
}
uint64 timeNow = getNanos();
if (!diffIsOlderThen(timeNow, &server->player[playerID].timers.sinceLastGrenadeThrown, NANO_IN_MILLI * 500) ||
!diffIsOlderThen(timeNow, &server->player[playerID].timers.sincePossibleSpadenade, (long) NANO_IN_MILLI * 1000))
{
return;
}
Grenade* grenade = malloc(sizeof(Grenade));
if (server->player[playerID].grenades > 0) {
grenade->fuse = ReadFloat(data);
grenade->position.x = ReadFloat(data);
grenade->position.y = ReadFloat(data);
grenade->position.z = ReadFloat(data);
float velX = ReadFloat(data), velY = ReadFloat(data), velZ = ReadFloat(data);
if (server->player[playerID].sprinting) {
free(grenade);
return;
}
float length = sqrt((velX * velX) + (velY * velY) + (velZ * velZ));
if (length == 0) {
length = 1; // In case we get 000 velocity without this normalization would produce -nan
}
if (length > 1.f) { // Normalize if we get velocity vector that has length > 1
float normLength = 1 / length;
grenade->velocity.x = velX * normLength;
grenade->velocity.y = velY * normLength;
grenade->velocity.z = velZ * normLength;
} else {
grenade->velocity.x = velX;
grenade->velocity.y = velY;
grenade->velocity.z = velZ;
}
Vector3f posZ1 = grenade->position;
posZ1.z += 1;
Vector3f posZ2 = grenade->position;
posZ2.z += 2;
if (vecfValidPos(server, grenade->position) ||
(vecfValidPos(server, posZ1) && server->player[playerID].movement.position.z < 0) ||
(vecfValidPos(server, posZ2) && server->player[playerID].movement.position.z < 0))
{
sendGrenade(server, playerID, grenade->fuse, grenade->position, grenade->velocity);
grenade->sent = 1;
grenade->timeSinceSent = getNanos();
}
DL_APPEND(server->player[playerID].grenade, grenade);
server->player[playerID].grenades--;
}
}
// hitPlayerID is the player that got shot
// playerID is the player who fired.
static void receiveHitPacket(Server* server, uint8 playerID, DataStream* data)
{
uint8 hitPlayerID = ReadByte(data);
Hit hitType = ReadByte(data);
Vector3f shotPos = server->player[playerID].movement.position;
Vector3f shotEyePos = server->player[playerID].movement.eyePos;
Vector3f hitPos = server->player[hitPlayerID].movement.position;
Vector3f shotOrien = server->player[playerID].movement.forwardOrientation;
float distance = DistanceIn2D(shotPos, hitPos);
long x = 0, y = 0, z = 0;
if (server->player[playerID].sprinting ||
(server->player[playerID].item == 2 && server->player[playerID].weaponClip <= 0))
{
return; // Sprinting and hitting somebody is impossible
}
uint64 timeNow = getNanos();
if (allowShot(server, playerID, hitPlayerID, timeNow, distance, &x, &y, &z, shotPos, shotOrien, hitPos, shotEyePos))
{
switch (server->player[playerID].weapon) {
case WEAPON_RIFLE:
{
switch (hitType) {
case HIT_TYPE_HEAD:
{
sendKillActionPacket(server, playerID, hitPlayerID, 1, 5, 0);
break;
}
case HIT_TYPE_TORSO:
{
sendSetHP(server, playerID, hitPlayerID, 49, 1, 0, 5, 0, shotPos);
break;
}
case HIT_TYPE_ARMS:
{