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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 "Events.h"
#include "ParseConvert.h"
#include "Protocol.h"
#include "Structs.h"
#include "Util/Uthash.h"
#include "Util/Compress.h"
#include "Util/DataStream.h"
#include "Util/Enums.h"
#include "Util/Line.h"
#include "Util/Log.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_t allowShot(server_t* server,
uint8_t playerID,
uint8_t hitPlayerID,
uint64_t timeNow,
float distance,
long* x,
long* y,
long* z,
vector3f_t shotPos,
vector3f_t shotOrien,
vector3f_t hitPos,
vector3f_t shotEyePos)
{
uint8_t ret = 0;
if (server->player[playerID].primary_fire &&
((server->player[playerID].item == 0 &&
diffIsOlderThen(timeNow, &server->player[playerID].timers.since_last_shot, NANO_IN_MILLI * 100)) ||
(server->player[playerID].item == 2 && server->player[playerID].weapon == 0 &&
diffIsOlderThen(timeNow, &server->player[playerID].timers.since_last_shot, NANO_IN_MILLI * 500)) ||
(server->player[playerID].item == 2 && server->player[playerID].weapon == 1 &&
diffIsOlderThen(timeNow, &server->player[playerID].timers.since_last_shot, NANO_IN_MILLI * 110)) ||
(server->player[playerID].item == 2 && server->player[playerID].weapon == 2 &&
diffIsOlderThen(timeNow, &server->player[playerID].timers.since_last_shot, NANO_IN_MILLI * 1000))) &&
server->player[playerID].alive && server->player[hitPlayerID].alive &&
(server->player[playerID].team != server->player[hitPlayerID].team ||
server->player[playerID].allow_team_killing) &&
(server->player[playerID].allow_killing && server->global_ak) &&
physics_validate_hit(shotPos, shotOrien, hitPos, 5) &&
(physics_cast_ray(
server, shotEyePos.x, shotEyePos.y, shotEyePos.z, shotOrien.x, shotOrien.y, shotOrien.z, distance, x, y, z) ==
0 ||
physics_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 send_restock(server_t* server, uint8_t playerID)
{
if (server->protocol.num_players == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 2, ENET_PACKET_FLAG_RELIABLE);
datastream_t stream = {packet->data, packet->dataLength, 0};
datastream_write_u8(&stream, PACKET_TYPE_RESTOCK);
datastream_write_u8(&stream, playerID);
if (enet_peer_send(server->player[playerID].peer, 0, packet) != 0) {
enet_packet_destroy(packet);
}
}
void send_move_object(server_t* server, uint8_t object, uint8_t team, vector3f_t pos)
{
if (server->protocol.num_players == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 15, ENET_PACKET_FLAG_RELIABLE);
datastream_t stream = {packet->data, packet->dataLength, 0};
datastream_write_u8(&stream, PACKET_TYPE_MOVE_OBJECT);
datastream_write_u8(&stream, object);
datastream_write_u8(&stream, team);
datastream_write_f(&stream, pos.x);
datastream_write_f(&stream, pos.y);
datastream_write_f(&stream, pos.z);
uint8_t sent = 0;
for (int player = 0; player < server->protocol.max_players; ++player) {
if (is_past_state_data(server, player)) {
if (enet_peer_send(server->player[player].peer, 0, packet) == 0) {
sent = 1;
}
}
}
if (sent == 0) {
enet_packet_destroy(packet);
}
}
void send_intel_capture(server_t* server, uint8_t playerID, uint8_t winning)
{
if (server->protocol.num_players == 0) {
return;
}
uint8_t team;
if (server->player[playerID].team == 0) {
team = 1;
} else {
team = 0;
}
if (server->player[playerID].has_intel == 0 || server->protocol.gamemode.intel_held[team] == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 3, ENET_PACKET_FLAG_RELIABLE);
datastream_t stream = {packet->data, packet->dataLength, 0};
datastream_write_u8(&stream, PACKET_TYPE_INTEL_CAPTURE);
datastream_write_u8(&stream, playerID);
datastream_write_u8(&stream, winning);
server->player[playerID].has_intel = 0;
server->protocol.gamemode.intel_held[team] = 0;
uint8_t sent = 0;
for (int player = 0; player < server->protocol.max_players; ++player) {
if (is_past_state_data(server, player)) {
if (enet_peer_send(server->player[player].peer, 0, packet) == 0) {
sent = 1;
}
}
}
if (sent == 0) {
enet_packet_destroy(packet);
}
}
void send_intel_pickup(server_t* server, uint8_t playerID)
{
if (server->protocol.num_players == 0) {
return;
}
uint8_t team;
if (server->player[playerID].team == 0) {
team = 1;
} else {
team = 0;
}
if (server->player[playerID].has_intel == 1 || server->protocol.gamemode.intel_held[team] == 1) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 2, ENET_PACKET_FLAG_RELIABLE);
datastream_t stream = {packet->data, packet->dataLength, 0};
datastream_write_u8(&stream, PACKET_TYPE_INTEL_PICKUP);
datastream_write_u8(&stream, playerID);
server->player[playerID].has_intel = 1;
server->protocol.gamemode.player_intel_team[server->player[playerID].team] = playerID;
server->protocol.gamemode.intel_held[team] = 1;
uint8_t sent = 0;
for (int player = 0; player < server->protocol.max_players; ++player) {
if (is_past_state_data(server, player)) {
if (enet_peer_send(server->player[player].peer, 0, packet) == 0) {
sent = 1;
}
}
}
if (sent == 0) {
enet_packet_destroy(packet);
}
}
void send_intel_drop(server_t* server, uint8_t playerID)
{
if (server->protocol.num_players == 0) {
return;
}
uint8_t team;
if (server->player[playerID].team == 0) {
team = 1;
} else {
team = 0;
}
if (server->player[playerID].has_intel == 0 || server->protocol.gamemode.intel_held[team] == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 14, ENET_PACKET_FLAG_RELIABLE);
datastream_t stream = {packet->data, packet->dataLength, 0};
datastream_write_u8(&stream, PACKET_TYPE_INTEL_DROP);
datastream_write_u8(&stream, playerID);
if (server->protocol.current_gamemode == GAME_MODE_BABEL) {
datastream_write_f(&stream, (float) server->s_map.map.size_x / 2);
datastream_write_f(&stream, (float) server->s_map.map.size_y / 2);
datastream_write_f(
&stream,
(float) mapvxl_find_top_block(&server->s_map.map, server->s_map.map.size_x / 2, server->s_map.map.size_y / 2));
server->protocol.gamemode.intel[team].x = (float) server->s_map.map.size_x / 2;
server->protocol.gamemode.intel[team].y = (float) server->s_map.map.size_y / 2;
server->protocol.gamemode.intel[team].z =
mapvxl_find_top_block(&server->s_map.map, server->s_map.map.size_x / 2, server->s_map.map.size_y / 2);
server->protocol.gamemode.intel[server->player[playerID].team] = server->protocol.gamemode.intel[team];
send_move_object(
server, server->player[playerID].team, server->player[playerID].team, server->protocol.gamemode.intel[team]);
} else {
datastream_write_f(&stream, server->player[playerID].movement.position.x);
datastream_write_f(&stream, server->player[playerID].movement.position.y);
datastream_write_f(&stream,
(float) mapvxl_find_top_block(&server->s_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 = mapvxl_find_top_block(
&server->s_map.map, server->player[playerID].movement.position.x, server->player[playerID].movement.position.y);
}
server->player[playerID].has_intel = 0;
server->protocol.gamemode.player_intel_team[server->player[playerID].team] = 32;
server->protocol.gamemode.intel_held[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_t sent = 0;
for (int player = 0; player < server->protocol.max_players; ++player) {
if (is_past_state_data(server, player)) {
if (enet_peer_send(server->player[player].peer, 0, packet) == 0) {
sent = 1;
}
}
}
if (sent == 0) {
enet_packet_destroy(packet);
}
}
void send_grenade(server_t* server, uint8_t playerID, float fuse, vector3f_t position, vector3f_t velocity)
{
if (server->protocol.num_players == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 30, ENET_PACKET_FLAG_RELIABLE);
datastream_t stream = {packet->data, packet->dataLength, 0};
datastream_write_u8(&stream, PACKET_TYPE_GRENADE_PACKET);
datastream_write_u8(&stream, playerID);
datastream_write_f(&stream, fuse);
datastream_write_f(&stream, position.x);
datastream_write_f(&stream, position.y);
datastream_write_f(&stream, position.z);
datastream_write_f(&stream, velocity.x);
datastream_write_f(&stream, velocity.y);
datastream_write_f(&stream, velocity.z);
if (SendPacketExceptSender(server, packet, playerID) == 0) {
enet_packet_destroy(packet);
}
}
void send_player_left(server_t* server, uint8_t playerID)
{
char ipString[17];
format_ip_to_str(ipString, server->player[playerID].ip);
LOG_INFO("Player %s (%s, #%hhu) disconnected", server->player[playerID].name, ipString, playerID);
PlayerDisconnectRun(playerID);
if (server->protocol.num_players == 0) {
return;
}
for (uint8_t i = 0; i < server->protocol.max_players; ++i) {
if (i != playerID && is_past_state_data(server, i)) {
ENetPacket* packet = enet_packet_create(NULL, 2, ENET_PACKET_FLAG_RELIABLE);
datastream_t stream = {packet->data, packet->dataLength, 0};
datastream_write_u8(&stream, PACKET_TYPE_PLAYER_LEFT);
datastream_write_u8(&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 send_weapon_reload(server_t* server, uint8_t playerID, uint8_t startAnimation, uint8_t clip, uint8_t reserve)
{
if (server->protocol.num_players == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 4, ENET_PACKET_FLAG_RELIABLE);
datastream_t stream = {packet->data, packet->dataLength, 0};
datastream_write_u8(&stream, PACKET_TYPE_WEAPON_RELOAD);
datastream_write_u8(&stream, playerID);
if (startAnimation) {
datastream_write_u8(&stream, clip);
datastream_write_u8(&stream, reserve);
} else {
datastream_write_u8(&stream, server->player[playerID].weapon_clip);
datastream_write_u8(&stream, server->player[playerID].weapon_reserve);
}
if (startAnimation) {
uint8_t sendSucc = 0;
for (int player = 0; player < server->protocol.max_players; ++player) {
if (is_past_state_data(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 (is_past_join_screen(server, playerID)) {
if (enet_peer_send(server->player[playerID].peer, 0, packet) != 0) {
enet_packet_destroy(packet);
}
}
}
}
void send_weapon_input(server_t* server, uint8_t playerID, uint8_t wInput)
{
if (server->protocol.num_players == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 3, ENET_PACKET_FLAG_RELIABLE);
datastream_t stream = {packet->data, packet->dataLength, 0};
datastream_write_u8(&stream, PACKET_TYPE_WEAPON_INPUT);
datastream_write_u8(&stream, playerID);
if (server->player[playerID].sprinting) {
wInput = 0;
}
datastream_write_u8(&stream, wInput);
if (SendPacketExceptSender(server, packet, playerID) == 0) {
enet_packet_destroy(packet);
}
}
void send_set_color(server_t* server, uint8_t playerID, uint8_t R, uint8_t G, uint8_t B)
{
if (server->protocol.num_players == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 5, ENET_PACKET_FLAG_RELIABLE);
datastream_t stream = {packet->data, packet->dataLength, 0};
datastream_write_u8(&stream, PACKET_TYPE_SET_COLOR);
datastream_write_u8(&stream, playerID);
datastream_write_u8(&stream, B);
datastream_write_u8(&stream, G);
datastream_write_u8(&stream, R);
if (SendPacketExceptSender(server, packet, playerID) == 0) {
enet_packet_destroy(packet);
}
}
void send_set_color_to_player(server_t* server, uint8_t playerID, uint8_t sendToID, uint8_t R, uint8_t G, uint8_t B)
{
if (server->protocol.num_players == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 5, ENET_PACKET_FLAG_RELIABLE);
datastream_t stream = {packet->data, packet->dataLength, 0};
datastream_write_u8(&stream, PACKET_TYPE_SET_COLOR);
datastream_write_u8(&stream, playerID);
datastream_write_u8(&stream, B);
datastream_write_u8(&stream, G);
datastream_write_u8(&stream, R);
if (enet_peer_send(server->player[sendToID].peer, 0, packet) != 0) {
enet_packet_destroy(packet);
}
}
void send_set_tool(server_t* server, uint8_t playerID, uint8_t tool)
{
if (server->protocol.num_players == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 3, ENET_PACKET_FLAG_RELIABLE);
datastream_t stream = {packet->data, packet->dataLength, 0};
datastream_write_u8(&stream, PACKET_TYPE_SET_TOOL);
datastream_write_u8(&stream, playerID);
datastream_write_u8(&stream, tool);
if (SendPacketExceptSender(server, packet, playerID) == 0) {
enet_packet_destroy(packet);
}
}
void send_block_line(server_t* server, uint8_t playerID, vector3i_t start, vector3i_t end)
{
if (server->protocol.num_players == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 26, ENET_PACKET_FLAG_RELIABLE);
datastream_t stream = {packet->data, packet->dataLength, 0};
datastream_write_u8(&stream, PACKET_TYPE_BLOCK_LINE);
datastream_write_u8(&stream, playerID);
datastream_write_u32(&stream, start.x);
datastream_write_u32(&stream, start.y);
datastream_write_u32(&stream, start.z);
datastream_write_u32(&stream, end.x);
datastream_write_u32(&stream, end.y);
datastream_write_u32(&stream, end.z);
uint8_t sent = 0;
for (int player = 0; player < server->protocol.max_players; ++player) {
if (is_past_state_data(server, player)) {
if (enet_peer_send(server->player[player].peer, 0, packet) == 0) {
sent = 1;
}
} else if (server->player[player].state == STATE_STARTING_MAP ||
server->player[player].state == STATE_LOADING_CHUNKS) {
block_node_t* node = (block_node_t*) malloc(sizeof(*node));
node->position.x = start.x;
node->position.y = start.y;
node->position.z = start.z;
node->position_end.x = end.x;
node->position_end.y = end.y;
node->position_end.z = end.z;
node->color = server->player[playerID].color;
node->type = 10;
node->sender_id = playerID;
LL_APPEND(server->player[player].blockBuffer, node);
}
}
if (sent == 0) {
enet_packet_destroy(packet);
}
}
void block_line_to_player(server_t* server, uint8_t playerID, uint8_t sendToID, vector3i_t start, vector3i_t end)
{
if (server->protocol.num_players == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 26, ENET_PACKET_FLAG_RELIABLE);
datastream_t stream = {packet->data, packet->dataLength, 0};
datastream_write_u8(&stream, PACKET_TYPE_BLOCK_LINE);
datastream_write_u8(&stream, playerID);
datastream_write_u32(&stream, start.x);
datastream_write_u32(&stream, start.y);
datastream_write_u32(&stream, start.z);
datastream_write_u32(&stream, end.x);
datastream_write_u32(&stream, end.y);
datastream_write_u32(&stream, end.z);
uint8_t sent = 0;
if (enet_peer_send(server->player[sendToID].peer, 0, packet) == 0) {
sent = 1;
}
if (sent == 0) {
enet_packet_destroy(packet);
}
}
void send_block_action(server_t* server, uint8_t playerID, uint8_t actionType, int X, int Y, int Z)
{
if (server->protocol.num_players == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 15, ENET_PACKET_FLAG_RELIABLE);
datastream_t stream = {packet->data, packet->dataLength, 0};
datastream_write_u8(&stream, PACKET_TYPE_BLOCK_ACTION);
datastream_write_u8(&stream, playerID);
datastream_write_u8(&stream, actionType);
datastream_write_u32(&stream, X);
datastream_write_u32(&stream, Y);
datastream_write_u32(&stream, Z);
uint8_t sent = 0;
for (int player = 0; player < server->protocol.max_players; ++player) {
if (is_past_state_data(server, player)) {
if (enet_peer_send(server->player[player].peer, 0, packet) == 0) {
sent = 1;
}
} else if (server->player[player].state == STATE_STARTING_MAP ||
server->player[player].state == STATE_LOADING_CHUNKS) {
block_node_t* node = (block_node_t*) malloc(sizeof(*node));
node->position.x = X;
node->position.y = Y;
node->position.z = Z;
node->color = server->player[playerID].color;
node->type = actionType;
node->sender_id = playerID;
LL_APPEND(server->player[player].blockBuffer, node);
}
}
if (sent == 0) {
enet_packet_destroy(packet);
}
}
void send_block_action_to_player(server_t* server,
uint8_t playerID,
uint8_t sendToID,
uint8_t actionType,
int X,
int Y,
int Z)
{
if (server->protocol.num_players == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 15, ENET_PACKET_FLAG_RELIABLE);
datastream_t stream = {packet->data, packet->dataLength, 0};
datastream_write_u8(&stream, PACKET_TYPE_BLOCK_ACTION);
datastream_write_u8(&stream, playerID);
datastream_write_u8(&stream, actionType);
datastream_write_u32(&stream, X);
datastream_write_u32(&stream, Y);
datastream_write_u32(&stream, Z);
uint8_t sent = 0;
if (enet_peer_send(server->player[sendToID].peer, 0, packet) == 0) {
sent = 1;
}
if (sent == 0) {
enet_packet_destroy(packet);
}
}
void send_state_data(server_t* server, uint8_t playerID)
{
if (server->protocol.num_players == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 104, ENET_PACKET_FLAG_RELIABLE);
datastream_t stream = {packet->data, packet->dataLength, 0};
datastream_write_u8(&stream, PACKET_TYPE_STATE_DATA);
datastream_write_u8(&stream, playerID);
datastream_write_color_rgb(&stream, server->protocol.color_fog);
datastream_write_color_rgb(&stream, server->protocol.color_team[0]);
datastream_write_color_rgb(&stream, server->protocol.color_team[1]);
datastream_write_array(&stream, server->protocol.name_team[0], 10);
datastream_write_array(&stream, server->protocol.name_team[1], 10);
if (server->protocol.current_gamemode == 0 || server->protocol.current_gamemode == 1) {
datastream_write_u8(&stream, server->protocol.current_gamemode);
} else {
datastream_write_u8(&stream, 0);
}
// MODE CTF:
datastream_write_u8(&stream, server->protocol.gamemode.score[0]); // SCORE TEAM A
datastream_write_u8(&stream, server->protocol.gamemode.score[1]); // SCORE TEAM B
datastream_write_u8(&stream, server->protocol.gamemode.score_limit); // SCORE LIMIT
server->protocol.gamemode.intel_flags = 0;
if (server->protocol.gamemode.intel_held[0]) {
server->protocol.gamemode.intel_flags = INTEL_TEAM_B;
} else if (server->protocol.gamemode.intel_held[1]) {
server->protocol.gamemode.intel_flags = INTEL_TEAM_A;
} else if (server->protocol.gamemode.intel_held[0] && server->protocol.gamemode.intel_held[1]) {
server->protocol.gamemode.intel_flags = INTEL_TEAM_BOTH;
}
datastream_write_u8(&stream, server->protocol.gamemode.intel_flags); // INTEL FLAGS
if ((server->protocol.gamemode.intel_flags & 1) == 0) {
datastream_write_u8(&stream, server->protocol.gamemode.player_intel_team[1]);
for (int i = 0; i < 11; ++i) {
datastream_write_u8(&stream, 255);
}
} else {
datastream_write_vector3f(&stream, server->protocol.gamemode.intel[0]);
}
if ((server->protocol.gamemode.intel_flags & 2) == 0) {
datastream_write_u8(&stream, server->protocol.gamemode.player_intel_team[0]);
for (int i = 0; i < 11; ++i) {
datastream_write_u8(&stream, 255);
}
} else {
datastream_write_vector3f(&stream, server->protocol.gamemode.intel[1]);
}
datastream_write_vector3f(&stream, server->protocol.gamemode.base[0]);
datastream_write_vector3f(&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 send_input_data(server_t* server, uint8_t playerID)
{
if (server->protocol.num_players == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 3, ENET_PACKET_FLAG_RELIABLE);
datastream_t stream = {packet->data, packet->dataLength, 0};
datastream_write_u8(&stream, PACKET_TYPE_INPUT_DATA);
datastream_write_u8(&stream, playerID);
datastream_write_u8(&stream, server->player[playerID].input);
if (SendPacketExceptSenderDistCheck(server, packet, playerID) == 0) {
enet_packet_destroy(packet);
}
}
void send_kill_action_packet(server_t* server,
uint8_t killerID,
uint8_t playerID,
uint8_t killReason,
uint8_t respawnTime,
uint8_t makeInvisible)
{
if (server->protocol.num_players == 0) {
return;
}
if (server->player[playerID].alive == 0) {
return; // Cant kill player if they are dead
}
ENetPacket* packet = enet_packet_create(NULL, 5, ENET_PACKET_FLAG_RELIABLE);
datastream_t stream = {packet->data, packet->dataLength, 0};
datastream_write_u8(&stream, PACKET_TYPE_KILL_ACTION);
datastream_write_u8(&stream, playerID); // Player that died.
datastream_write_u8(&stream, killerID); // Player that killed.
datastream_write_u8(&stream, killReason); // Killing reason (1 is headshot)
datastream_write_u8(&stream, respawnTime); // Time before respawn happens
uint8_t sent = 0;
for (int player = 0; player < server->protocol.max_players; ++player) {
uint8_t isPast = is_past_state_data(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].is_invisible == 0) {
if (killerID != playerID) {
server->player[killerID].kills++;
}
server->player[playerID].deaths++;
server->player[playerID].alive = 0;
server->player[playerID].respawn_time = respawnTime;
server->player[playerID].timers.start_of_respawn_wait = time(NULL);
server->player[playerID].state = STATE_WAITING_FOR_RESPAWN;
switch (server->player[playerID].weapon) {
case 0:
server->player[playerID].weapon_reserve = 50;
server->player[playerID].weapon_clip = 10;
server->player[playerID].default_clip = RIFLE_DEFAULT_CLIP;
server->player[playerID].default_reserve = RIFLE_DEFAULT_RESERVE;
break;
case 1:
server->player[playerID].weapon_reserve = 120;
server->player[playerID].weapon_clip = 30;
server->player[playerID].default_clip = SMG_DEFAULT_CLIP;
server->player[playerID].default_reserve = SMG_DEFAULT_RESERVE;
break;
case 2:
server->player[playerID].weapon_reserve = 48;
server->player[playerID].weapon_clip = 6;
server->player[playerID].default_clip = SHOTGUN_DEFAULT_CLIP;
server->player[playerID].default_reserve = SHOTGUN_DEFAULT_RESERVE;
break;
}
}
if (server->player[playerID].has_intel) {
send_intel_drop(server, playerID);
}
}
void send_set_hp(server_t* server,
uint8_t playerID,
uint8_t hitPlayerID,
long HPChange,
uint8_t typeOfDamage,
uint8_t killReason,
uint8_t respawnTime,
uint8_t isGrenade,
vector3f_t position)
{
if (server->protocol.num_players == 0 || server->player[hitPlayerID].team == TEAM_SPECTATOR ||
(!server->player[playerID].allow_team_killing &&
server->player[playerID].team == server->player[hitPlayerID].team && playerID != hitPlayerID))
{
return;
}
if ((server->player[playerID].allow_killing && server->global_ak && server->player[playerID].allow_killing &&
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) {
send_kill_action_packet(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_t stream = {packet->data, packet->dataLength, 0};
datastream_write_u8(&stream, PACKET_TYPE_SET_HP);
datastream_write_u8(&stream, server->player[hitPlayerID].hp);
datastream_write_u8(&stream, typeOfDamage);
if (typeOfDamage != 0 && isGrenade == 0) {
datastream_write_f(&stream, server->player[playerID].movement.position.x);
datastream_write_f(&stream, server->player[playerID].movement.position.y);
datastream_write_f(&stream, server->player[playerID].movement.position.z);
} else if (typeOfDamage != 0 && isGrenade == 1) {
datastream_write_f(&stream, position.x);
datastream_write_f(&stream, position.y);
datastream_write_f(&stream, position.z);
} else {
datastream_write_f(&stream, 0);
datastream_write_f(&stream, 0);
datastream_write_f(&stream, 0);
}
if (enet_peer_send(server->player[hitPlayerID].peer, 0, packet) != 0) {
enet_packet_destroy(packet);
}
}
}
}
void send_existing_player(server_t* server, uint8_t playerID, uint8_t otherID)
{
if (server->protocol.num_players == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 28, ENET_PACKET_FLAG_RELIABLE);
datastream_t stream = {packet->data, packet->dataLength, 0};
datastream_write_u8(&stream, PACKET_TYPE_EXISTING_PLAYER);
datastream_write_u8(&stream, otherID); // ID
datastream_write_u8(&stream, server->player[otherID].team); // TEAM
datastream_write_u8(&stream, server->player[otherID].weapon); // WEAPON
datastream_write_u8(&stream, server->player[otherID].item); // HELD ITEM
datastream_write_u32(&stream, server->player[otherID].kills); // KILLS
datastream_write_color_rgb(&stream, server->player[otherID].color); // COLOR
datastream_write_array(&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_t* server, uint8_t playerID)
{
if (server->protocol.num_players == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 1, ENET_PACKET_FLAG_RELIABLE);
datastream_t stream = {packet->data, packet->dataLength, 0};
datastream_write_u8(&stream, PACKET_TYPE_VERSION_REQUEST);
if (enet_peer_send(server->player[playerID].peer, 0, packet) != 0) {
enet_packet_destroy(packet);
}
}
void send_map_start(server_t* server, uint8_t playerID)
{
if (server->protocol.num_players == 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_t stream = {packet->data, packet->dataLength, 0};
datastream_write_u8(&stream, PACKET_TYPE_MAP_START);
datastream_write_u32(&stream, server->s_map.compressed_size);
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_t* map = (uint8_t*) calloc(
server->s_map.map.size_x * server->s_map.map.size_y * (server->s_map.map.size_z / 2), sizeof(uint8_t));
// Write map to out
server->s_map.map_size = mapvxl_write(&server->s_map.map, map);
// Resize the map to the exact VXL memory size for given XYZ coordinate size
uint8_t* old_map;
old_map = (uint8_t*) realloc(map, server->s_map.map_size);
if (!old_map) {
free(map);
return;
}
map = old_map;
server->s_map.compressed_map = compress_queue(map, server->s_map.map_size, DEFAULT_COMPRESS_CHUNK_SIZE);
server->player[playerID].queues = server->s_map.compressed_map;
free(map);
}
}
void send_map_chunks(server_t* server, uint8_t playerID)
{
if (server->player[playerID].queues == NULL) {
while (server->s_map.compressed_map) {
server->s_map.compressed_map = queue_pop(server->s_map.compressed_map);
}
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_t stream = {packet->data, packet->dataLength, 0};
datastream_write_u8(&stream, PACKET_TYPE_MAP_CHUNK);
datastream_write_array(
&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 send_create_player(server_t* server, uint8_t playerID, uint8_t otherID)
{
if (server->protocol.num_players == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 32, ENET_PACKET_FLAG_RELIABLE);
datastream_t stream = {packet->data, packet->dataLength, 0};
datastream_write_u8(&stream, PACKET_TYPE_CREATE_PLAYER);
datastream_write_u8(&stream, otherID); // ID
datastream_write_u8(&stream, server->player[otherID].weapon); // WEAPON
datastream_write_u8(&stream, server->player[otherID].team); // TEAM
datastream_write_vector3f(&stream, server->player[otherID].movement.position); // X Y Z
datastream_write_array(&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 send_respawn(server_t* server, uint8_t playerID)
{
for (uint8_t i = 0; i < server->protocol.max_players; ++i) {
if (is_past_join_screen(server, i)) {
send_create_player(server, i, playerID);
}
}
server->player[playerID].state = STATE_READY;
}
void receive_handle_send_message(server_t* server, uint8_t player, datastream_t* data)
{
if (server->protocol.num_players == 0) {
return;
}
uint32_t packetSize = data->length;
LOG_STATUS("%d %d", packetSize, data->length);
uint8_t ID = datastream_read_u8(data);
int meantfor = datastream_read_u8(data);
uint32_t length = datastream_left(data);
if (length > 2048) {
length = 2048; // Lets limit messages to 2048 characters
}
char* message =
calloc(length + 1, sizeof(char)); // Allocated 1 more byte in the case that client sent us non null ending string
datastream_read_array(data, message, length);
if (message[length - 1] != '\0') {
message[length] = '\0';
length++;
packetSize = length + 3;
}
if (player != ID) {
LOG_WARNING("Assigned ID: %d doesnt match sent ID: %d in message packet", player, ID);
}
uint8_t resetTime = 1;
if (!diffIsOlderThenDontUpdate(
get_nanos(), server->player[player].timers.since_last_message_from_spam, (uint64_t) NANO_IN_MILLI * 2000) &&
!server->player[player].muted && server->player[player].permissions <= 1)
{
server->player[player].spam_counter++;
if (server->player[player].spam_counter >= 5) {
sendMessageToStaff(
server, "WARNING: Player %s (#%d) is trying to spam. Muting.", server->player[player].name, player);
send_server_notice(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].spam_counter = 0;
}
resetTime = 0;
}
if (resetTime) {
server->player[player].timers.since_last_message_from_spam = get_nanos();
server->player[player].spam_counter = 0;
}
if (!diffIsOlderThen(
get_nanos(), &server->player[player].timers.since_last_message, (uint64_t) NANO_IN_MILLI * 400) &&
server->player[player].permissions <= 1)
{
send_server_notice(
server, player, 0, "WARNING: You sent last message too fast and thus was not sent out to players");
return;
}
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_t sent = 0;
if (message[0] == '/') {
command_handle(server, player, message, 0);
} else {
if (!server->player[player].muted) {
ENetPacket* packet = enet_packet_create(NULL, packetSize, ENET_PACKET_FLAG_RELIABLE);
datastream_t stream = {packet->data, packet->dataLength, 0};
datastream_write_u8(&stream, PACKET_TYPE_CHAT_MESSAGE);
datastream_write_u8(&stream, player);
datastream_write_u8(&stream, meantfor);
datastream_write_array(&stream, message, length);
for (int playerID = 0; playerID < server->protocol.max_players; ++playerID) {
if (is_past_join_screen(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 send_world_update(server_t* server, uint8_t playerID)
{
if (server->protocol.num_players == 0) {
return;
}
ENetPacket* packet = enet_packet_create(NULL, 1 + (32 * 24), 0);
datastream_t stream = {packet->data, packet->dataLength, 0};
datastream_write_u8(&stream, PACKET_TYPE_WORLD_UPDATE);
for (uint8_t j = 0; j < server->protocol.max_players; ++j) {
if (playerToPlayerVisible(server, playerID, j) && server->player[j].is_invisible == 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);*/
datastream_write_vector3f(&stream, server->player[j].movement.position);
datastream_write_vector3f(&stream, server->player[j].movement.forward_orientation);
} else {
vector3f_t empty;
empty.x = 0;
empty.y = 0;
empty.z = 0;
datastream_write_vector3f(&stream, empty);
datastream_write_vector3f(&stream, empty);
}
}
if (enet_peer_send(server->player[playerID].peer, 0, packet) != 0) {
enet_packet_destroy(packet);
}
}
void send_position_packet(server_t* server, uint8_t playerID, float x, float y, float z)
{
if (server->protocol.num_players == 0) {
return;