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Packets.c
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Packets.c
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// Copyright DarkNeutrino 2021
#include "Commands.h"
#include "Protocol.h"
#include "Structs.h"
#include <Compress.h>
#include <DataStream.h>
#include <Enums.h>
#include <Line.h>
#include <Queue.h>
#include <Types.h>
#include <ctype.h>
#include <enet/enet.h>
#include <libmapvxl/libmapvxl.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
void reorient_player(Server* server, uint8 playerID, Vector3f* orientation);
int validate_hit(Vector3f shooter, Vector3f orientation, Vector3f otherPos, float tolerance);
static unsigned long long get_nanos(void)
{
struct timespec ts;
clock_gettime(CLOCK_REALTIME, &ts);
return (unsigned long long) ts.tv_sec * 1000000000L + ts.tv_nsec;
}
long cast_ray(Server* server,
float x0,
float y0,
float z0,
float x1,
float y1,
float z1,
float length,
long* x,
long* y,
long* z);
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) && validate_hit(shotPos, shotOrien, hitPos, 5) &&
(cast_ray(
server, shotEyePos.x, shotEyePos.y, shotEyePos.z, shotOrien.x, shotOrien.y, shotOrien.z, distance, x, y, z) ==
0 ||
cast_ray(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)
{
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);
enet_peer_send(server->player[playerID].peer, 0, packet);
}
void SendMoveObject(Server* server, uint8 object, uint8 team, Vector3f pos)
{
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);
for (int player = 0; player < server->protocol.maxPlayers; ++player) {
if (isPastStateData(server, player)) {
enet_peer_send(server->player[player].peer, 0, packet);
}
}
}
void SendIntelCapture(Server* server, uint8 playerID, uint8 winning)
{
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;
for (int player = 0; player < server->protocol.maxPlayers; ++player) {
if (isPastStateData(server, player)) {
enet_peer_send(server->player[player].peer, 0, packet);
}
}
}
void SendIntelPickup(Server* server, uint8 playerID)
{
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;
for (int player = 0; player < server->protocol.maxPlayers; ++player) {
if (isPastStateData(server, player)) {
enet_peer_send(server->player[player].peer, 0, packet);
}
}
}
void SendIntelDrop(Server* server, uint8 playerID)
{
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, MAP_MAX_X / 2);
WriteFloat(&stream, MAP_MAX_Y / 2);
WriteFloat(&stream, (float) mapvxlFindTopBlock(&server->map.map, MAP_MAX_X / 2, MAP_MAX_Y / 2));
server->protocol.gameMode.intel[team].x = MAP_MAX_X / 2;
server->protocol.gameMode.intel[team].y = MAP_MAX_Y / 2;
server->protocol.gameMode.intel[team].z = mapvxlFindTopBlock(&server->map.map, MAP_MAX_X / 2, MAP_MAX_Y / 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);
for (int player = 0; player < server->protocol.maxPlayers; ++player) {
if (isPastStateData(server, player)) {
enet_peer_send(server->player[player].peer, 0, packet);
}
}
}
void SendGrenade(Server* server, uint8 playerID, float fuse, Vector3f position, Vector3f velocity)
{
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)
{
LOG_INFO("Player %s disconnected", server->player[playerID].name);
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");
}
}
}
}
void SendWeaponReload(Server* server, uint8 playerID, uint8 startAnimation, uint8 clip, uint8 reserve)
{
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)
{
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)
{
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)
{
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)
{
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);
for (int player = 0; player < server->protocol.maxPlayers; ++player) {
if (isPastStateData(server, player)) {
enet_peer_send(server->player[player].peer, 0, packet);
}
}
}
void SendBlockAction(Server* server, uint8 playerID, uint8 actionType, int X, int Y, int Z)
{
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);
for (int player = 0; player < server->protocol.maxPlayers; ++player) {
if (isPastStateData(server, player)) {
enet_peer_send(server->player[player].peer, 0, packet);
}
}
}
void SendStateData(Server* server, uint8 playerID)
{
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;
}
}
void SendInputData(Server* server, uint8 playerID)
{
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 sendKillPacket(Server* server,
uint8 killerID,
uint8 playerID,
uint8 killReason,
uint8 respawnTime,
uint8 makeInvisible)
{
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
for (int player = 0; player < server->protocol.maxPlayers; ++player) {
uint8 isPast = isPastStateData(server, player);
if ((makeInvisible && player != playerID && isPast) || (isPast && !makeInvisible)) {
enet_peer_send(server->player[player].peer, 0, packet);
}
}
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 sendHP(Server* server,
uint8 playerID,
uint8 hitPlayerID,
long HPChange,
uint8 typeOfDamage,
uint8 killReason,
uint8 respawnTime,
uint8 isGrenade,
Vector3f position)
{
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;
sendKillPacket(server, playerID, hitPlayerID, killReason, respawnTime, 0);
}
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);
}
enet_peer_send(server->player[hitPlayerID].peer, 0, packet);
}
}
}
void SendPlayerState(Server* server, uint8 playerID, uint8 otherID)
{
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");
}
}
void SendVersionRequest(Server* server, uint8 playerID)
{
ENetPacket* packet = enet_packet_create(NULL, 1, ENET_PACKET_FLAG_RELIABLE);
DataStream stream = {packet->data, packet->dataLength, 0};
WriteByte(&stream, PACKET_TYPE_VERSION_REQUEST);
enet_peer_send(server->player[playerID].peer, 0, packet);
}
void SendMapStart(Server* server, uint8 playerID)
{
LOG_STATUS("Sending map info");
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;
// map
uint8* out = (uint8*) malloc(1024 * 1024 * 10); // TODO: Make me dynamic based on changes to map
mapvxlWriteMap(&server->map.map, out);
server->map.compressedMap = CompressData(out, server->map.mapSize, DEFAULT_COMPRESSOR_CHUNK_SIZE);
server->player[playerID].queues = server->map.compressedMap;
free(out);
}
}
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_STATUS("Loading chunks done");
} 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 SendRespawnState(Server* server, uint8 playerID, uint8 otherID)
{
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");
}
}
void SendRespawn(Server* server, uint8 playerID)
{
for (uint8 i = 0; i < server->protocol.maxPlayers; ++i) {
if (isPastJoinScreen(server, i)) {
SendRespawnState(server, i, playerID);
}
}
server->player[playerID].state = STATE_READY;
}
void handleAndSendMessage(ENetEvent event, DataStream* data, Server* server, uint8 player)
{
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);
}
LOG_INFO("Player %s (%ld) to %d said: %s",
server->player[player].name,
(long) server->player[player].peer->data,
meantfor,
message);
message[length] = '\0';
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);
uint8 sent = 0;
if (message[0] == '/') {
handleCommands(server, player, message);
} else {
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;
}
}
}
}
free(message);
if (sent == 0) {
enet_packet_destroy(packet);
}
}
void SendWorldUpdate(Server* server, uint8 playerID)
{
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 = (get_nanos() - 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);
}
}
enet_peer_send(server->player[playerID].peer, 0, packet);
}
void SendPositionPacket(Server* server, uint8 playerID, float x, float y, float z)
{
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);
enet_peer_send(server->player[playerID].peer, 0, 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);
}
uint64 timeNow = get_nanos();
if (!diffIsOlderThen(timeNow, &server->player[playerID].timers.sinceLastGrenadeThrown, NANO_IN_MILLI * 1000)) {
return;
}
if (server->player[playerID].grenades > 0) {
for (int i = 0; i < 3; ++i) {
if (server->player[playerID].grenade[i].sent == 0) {
server->player[playerID].grenade[i].fuse = ReadFloat(data);
server->player[playerID].grenade[i].position.x = ReadFloat(data);
server->player[playerID].grenade[i].position.y = ReadFloat(data);
server->player[playerID].grenade[i].position.z = ReadFloat(data);
float velX = ReadFloat(data), velY = ReadFloat(data), velZ = ReadFloat(data);
if (server->player[playerID].sprinting) {
return;
}
float length = sqrt((velX * velX) + (velY * velY) + (velZ * velZ));
if (length > 2)
return;
float normLength = 1 / length;
server->player[playerID].grenade[i].velocity.x = velX * normLength;
server->player[playerID].grenade[i].velocity.y = velY * normLength;
server->player[playerID].grenade[i].velocity.z = velZ * normLength;
Vector3f posZ1 = server->player[playerID].grenade[i].position;
posZ1.z += 1;
Vector3f posZ2 = server->player[playerID].grenade[i].position;
posZ2.z += 2;
if (vecfValidPos(server->player[playerID].grenade[i].position) ||
(vecfValidPos(posZ1) && server->player[playerID].movement.position.z < 0) ||
(vecfValidPos(posZ2) && server->player[playerID].movement.position.z < 0))
{
SendGrenade(server,
playerID,
server->player[playerID].grenade[i].fuse,
server->player[playerID].grenade[i].position,
server->player[playerID].grenade[i].velocity);
server->player[playerID].grenade[i].sent = 1;
server->player[playerID].grenade[i].timeSinceSent = get_nanos();
}
break;
}
}
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) {
return; // Sprinting and hitting somebody is impossible
}
uint64 timeNow = get_nanos();
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:
{
sendKillPacket(server, playerID, hitPlayerID, 1, 5, 0);
break;
}
case HIT_TYPE_TORSO:
{
sendHP(server, playerID, hitPlayerID, 49, 1, 0, 5, 0, shotPos);
break;
}
case HIT_TYPE_ARMS:
{
sendHP(server, playerID, hitPlayerID, 33, 1, 0, 5, 0, shotPos);
break;
}
case HIT_TYPE_LEGS:
{
sendHP(server, playerID, hitPlayerID, 33, 1, 0, 5, 0, shotPos);
break;
}
case HIT_TYPE_MELEE:
// Empty so we dont have errors :)
break;
}
break;
}
case WEAPON_SMG:
{
switch (hitType) {
case HIT_TYPE_HEAD:
{
sendHP(server, playerID, hitPlayerID, 75, 1, 1, 5, 0, shotPos);
break;
}
case HIT_TYPE_TORSO:
{
sendHP(server, playerID, hitPlayerID, 29, 1, 0, 5, 0, shotPos);
break;
}
case HIT_TYPE_ARMS:
{
sendHP(server, playerID, hitPlayerID, 18, 1, 0, 5, 0, shotPos);
break;
}
case HIT_TYPE_LEGS:
{
sendHP(server, playerID, hitPlayerID, 18, 1, 0, 5, 0, shotPos);
break;
}
case HIT_TYPE_MELEE:
// Empty so we dont have errors :)
break;
}
break;
}
case WEAPON_SHOTGUN:
{
switch (hitType) {
case HIT_TYPE_HEAD:
{
sendHP(server, playerID, hitPlayerID, 37, 1, 1, 5, 0, shotPos);
break;
}
case HIT_TYPE_TORSO:
{
sendHP(server, playerID, hitPlayerID, 27, 1, 0, 5, 0, shotPos);
break;
}
case HIT_TYPE_ARMS:
{
sendHP(server, playerID, hitPlayerID, 16, 1, 0, 5, 0, shotPos);
break;
}
case HIT_TYPE_LEGS:
{
sendHP(server, playerID, hitPlayerID, 16, 1, 0, 5, 0, shotPos);
break;
}
case HIT_TYPE_MELEE:
// Empty so we dont have errors :)
break;
}
break;
}
}
if (hitType == HIT_TYPE_MELEE) {
sendHP(server, playerID, hitPlayerID, 80, 1, 2, 5, 0, shotPos);
}
}
}
static void receiveOrientationData(Server* server, uint8 playerID, DataStream* data)
{
float x, y, z;
x = ReadFloat(data);
y = ReadFloat(data);
z = ReadFloat(data);
float length = 1 / sqrt((x * x) + (y * y) + (z * z));
// Normalize the vectors as soon as we get them
server->player[playerID].movement.forwardOrientation.x = x * length;
server->player[playerID].movement.forwardOrientation.y = y * length;
server->player[playerID].movement.forwardOrientation.z = z * length;
reorient_player(server, playerID, &server->player[playerID].movement.forwardOrientation);
}
static void receiveInputData(Server* server, uint8 playerID, DataStream* data)
{
uint8 bits[8];
uint8 mask = 1;
uint8 ID;
ID = ReadByte(data);
if (playerID != ID) {
LOG_WARNING("Assigned ID: %d doesnt match sent ID: %d in Input packet", playerID, ID);
} else if (server->player[playerID].state == STATE_READY) {
server->player[playerID].input = ReadByte(data);
for (int i = 0; i < 8; i++) {
bits[i] = (server->player[playerID].input >> i) & mask;
}
server->player[playerID].movForward = bits[0];
server->player[playerID].movBackwards = bits[1];
server->player[playerID].movLeft = bits[2];
server->player[playerID].movRight = bits[3];
server->player[playerID].jumping = bits[4];
server->player[playerID].crouching = bits[5];
server->player[playerID].sneaking = bits[6];
server->player[playerID].sprinting = bits[7];
SendInputData(server, playerID);
}
}
static void receivePositionData(Server* server, uint8 playerID, DataStream* data)
{
float x, y, z;
x = ReadFloat(data);
y = ReadFloat(data);
z = ReadFloat(data);
#ifdef DEBUG
LOG_DEBUG("Player: %d, Our X: %f, Y: %f, Z: %f Actual X: %f, Y: %f, Z: %f",
playerID,
server->player[playerID].movement.position.x,
server->player[playerID].movement.position.y,
server->player[playerID].movement.position.z,
x,
y,
z);
LOG_DEBUG("Player: %d, Z solid: %d, Z+1 solid: %d, Z+2 solid: %d, Z: %d, Z+1: %d, Z+2: %d, Crouching: %d",
playerID,
mapvxlIsSolid(&server->map.map, (int) x, (int) y, (int) z),
mapvxlIsSolid(&server->map.map, (int) x, (int) y, (int) z + 1),
mapvxlIsSolid(&server->map.map, (int) x, (int) y, (int) z + 2),
(int) z,
(int) z + 1,
(int) z + 2,
server->player[playerID].crouching);
#endif
if (validPlayerPos(server, playerID, x, y, z)) {
server->player[playerID].movement.position.x = x;
server->player[playerID].movement.position.y = y;
server->player[playerID].movement.position.z = z;
server->player[playerID].movement.prevLegitPos = server->player[playerID].movement.position;
} else {
char message[31];
snprintf(message, 31, "Player #%d may be noclipping!", playerID);
LOG_WARNING("Player #%d may be noclipping!", playerID);
sendMessageToStaff(server, message);
if (validPlayerPos(server,
playerID,
server->player[playerID].movement.prevLegitPos.x,
server->player[playerID].movement.prevLegitPos.y,
server->player[playerID].movement.prevLegitPos.z) == 0)
{
if (getPlayerUnstuck(server, playerID) == 0) {
SetPlayerRespawnPoint(server, playerID);
sendServerNotice(
server, playerID, "Server could not find a free position to get you unstuck. Reseting to spawn");
char message[102];
snprintf(
message,
102,
"Could not find legit position for player #%d to get them unstuck. Resetting to spawn. Go check them!",
playerID);
LOG_WARNING(
"Could not find legit position for player #%d to get them unstuck. Resetting to spawn. Go check them!",
playerID);
sendMessageToStaff(server, message);
server->player[playerID].movement.prevLegitPos = server->player[playerID].movement.position;
}
}
SendPositionPacket(server,
playerID,
server->player[playerID].movement.prevLegitPos.x,
server->player[playerID].movement.prevLegitPos.y,
server->player[playerID].movement.prevLegitPos.z);
}
}