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cf1522d30335f656ac6c55f6024869e46ba24774
space-trading/src/server.c
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Tenari cf1522d303 tweaking balance a bit
2026-04-03 08:40:19 -05:00

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/*
* Code conventions:
* MyStructType
* myFunction()
* MyMacro()
* my_variable
* MY_CONSTANT
* */
#include <stdlib.h>
#include <sys/random.h>
#include <math.h>
#include "shared.h"
#include "base/impl.c"
#define NET_OUTGOING_MESSAGE_QUEUE_LEN (64)
#define NET_SERVER_MAX_CLIENTS (16)
#include "lib/network.c"
#include "lib/tui.c"
#include "string_chunk.c"
///// CONSTANTS
#define LEFT_ROOM_ENTITES_LEN (KB(1))
#define ROOM_MAP_COLLISIONS_LEN MAX_ROOMS/8
#define CLIENT_COMMAND_LIST_LEN 8
#define SERVER_MAX_HEAP_MEMORY MB(256)
#define GAME_THREAD_CONCURRENCY 2
#define GOAL_NETWORK_SEND_LOOPS_PER_S 8
#define GOAL_NETWORK_SEND_LOOP_US 1000000/GOAL_NETWORK_SEND_LOOPS_PER_S
#define GOAL_GAME_LOOPS_PER_S 24
#define GOAL_GAME_LOOP_US 1000000/GOAL_GAME_LOOPS_PER_S
#define CLIENT_TIMEOUT_FRAMES GOAL_GAME_LOOPS_PER_S*3
#define CHUNK_SIZE 64
#define ACCOUNT_LEN (16)
#define PARSED_CLIENT_COMMAND_THREAD_QUEUE_LEN 64
#define SYSTEM_MESSAGES_LEN 40
#define MAX_SYSTEM_MESSAGE_LEN 512
#define SBUFLEN (512)
///// TypeDefs
typedef enum Tab {
TabDebug,
TabMap,
Tab_Count,
} Tab;
typedef struct ParsedClientCommand {
CommandType type;
u8 byte;
u8 people;
u8 time_limit;
u16 sender_port;
u16 alt_port;
u32 sender_ip;
u32 alt_ip;
i32 socket_fd;
u32 qty;
CommodityType commodity;
StringChunkList name;
StringChunkList pass;
u64 id;
} ParsedClientCommand;
typedef struct ParsedClientCommandThreadQueue {
ParsedClientCommand items[PARSED_CLIENT_COMMAND_THREAD_QUEUE_LEN];
u32 head;
u32 tail;
u32 count;
Mutex mutex;
Cond not_empty;
Cond not_full;
} ParsedClientCommandThreadQueue;
typedef struct Account {
u8 destination_sys_idx;
bool changed;
u32 id; // the index in the array
String name;
String pw;
PlayerShip ship;
} Account;
typedef struct Client {
bool active;
bool needs_systems_init;
i32 socket_fd;
u64 account_id;
SocketAddress address;
CommandType commands[CLIENT_COMMAND_LIST_LEN];
} Client;
typedef struct ClientList {
u64 length;
u64 capacity;
Client* items;
} ClientList;
typedef struct State {
bool all_accounts_ready;
Tab tab;
u8 winner_id;
bool someone_won;
Mutex client_mutex;
Mutex mutex;
ClientList clients;
u64 next_eid;
Account accounts[ACCOUNT_LEN];
u64 frame;
Arena game_scratch;
StringArena string_arena;
String server_ip_address;
ParsedClientCommandThreadQueue* network_recv_queue;
OutgoingMessageQueue* network_send_queue;
StarSystem map[STAR_SYSTEM_COUNT];
} State;
///// Global Variables
global State state = { 0 };
global str TAB_STRS[Tab_Count] = {"Debug", "Map"};
global Arena permanent_arena = { 0 };
global bool debug_mode = false;
global bool should_quit = false;
global u8List system_messages[SYSTEM_MESSAGES_LEN] = {0};
global u8 system_message_index = 0;
///// functionImplementations()
fn void addSystemMessage(u8* msg) {
// save the message to our system_messages ring buffer
memset(system_messages[system_message_index].items, 0, SYSTEM_MESSAGES_LEN);
sprintf((char*)system_messages[system_message_index].items, "%s", msg);
system_messages[system_message_index].length = strlen((char*)system_messages[system_message_index].items);
system_message_index += 1;
if (system_message_index == SYSTEM_MESSAGES_LEN) {
system_message_index = 0;
}
}
fn void renderSystemMessages(Pixel* buf, Dim2 screen_dimensions, Box sys_msg_box) {
i32 printable_lines = sys_msg_box.height - 2;
if (printable_lines > SYSTEM_MESSAGES_LEN) {
printable_lines = SYSTEM_MESSAGES_LEN;
}
for (i32 i = 0; i < printable_lines; i++) {
i32 index = (system_message_index - 1 - i);
if (index < 0) {
index = SYSTEM_MESSAGES_LEN + index;
}
u32 y = sys_msg_box.y + (sys_msg_box.height - i) - 1;
u8List sys_msg = system_messages[index];
for (i32 j = 0; j < MAX_SYSTEM_MESSAGE_LEN && j < sys_msg_box.width-4; j++) {
u32 pos = (sys_msg_box.x + 2+j) + (screen_dimensions.width * y);
if (j < sys_msg.length) {
if (sys_msg.items[j] != '\n') {
buf[pos].bytes[0] = sys_msg.items[j];
}
}
}
}
}
fn ParsedClientCommandThreadQueue* newPCCThreadQueue(Arena* a) {
ParsedClientCommandThreadQueue* result = arenaAlloc(a, sizeof(ParsedClientCommandThreadQueue));
MemoryZero(result, (sizeof *result));
result->mutex = newMutex();
result->not_full = newCond();
result->not_empty = newCond();
return result;
}
fn void pccThreadSafeQueuePush(ParsedClientCommandThreadQueue* queue, ParsedClientCommand* msg) {
lockMutex(&queue->mutex); {
while (queue->count == PARSED_CLIENT_COMMAND_THREAD_QUEUE_LEN) {
waitForCondSignal(&queue->not_full, &queue->mutex);
}
MemoryCopy(&queue->items[queue->tail], msg, (sizeof *msg));
queue->tail = (queue->tail + 1) % PARSED_CLIENT_COMMAND_THREAD_QUEUE_LEN;
queue->count++;
signalCond(&queue->not_empty);
} unlockMutex(&queue->mutex);
}
fn ParsedClientCommand* pccThreadSafeNonblockingQueuePop(ParsedClientCommandThreadQueue* q, ParsedClientCommand* copy_target) {
// immediately returns NULL if there's nothing in the ThreadQueue
// copies the ParsedClientCommand into `copy_target` if there is something in the queue
// and marks it as popped from the queue
ParsedClientCommand* result = NULL;
lockMutex(&q->mutex); {
if (q->count > 0) {
result = &q->items[q->head];
MemoryCopy(copy_target, result, (sizeof *copy_target));
q->head = (q->head + 1) % PARSED_CLIENT_COMMAND_THREAD_QUEUE_LEN;
q->count--;
signalCond(&q->not_full);
}
} unlockMutex(&q->mutex);
return result;
}
fn Account* findAccountByName(String name) {
for (u32 i = 0; i < ACCOUNT_LEN; i++) {
if (stringsEq(&state.accounts[i].name, &name)) {
return &state.accounts[i];
}
}
return NULL;
}
fn void exitWithErrorMessage(ptr msg) {
printf("error: %s", msg);
exit(1);
}
fn u32 pushClient(ClientList* clients, SocketAddress addr, i32 socket_fd) {
Client new_client = {
.active = true,
.socket_fd = socket_fd,
.address = addr,
};
// first, try to overwrite an old dc'ed client
for (u32 i = 1; i < clients->length; i++) {
if (clients->items[i].active == false) {
clients->items[i] = new_client;
return i;
}
}
// if there are none, then add the client to the end of the list
assert(clients->capacity > clients->length);//TODO grow the list if we need to
clients->items[clients->length] = new_client;
u32 result = clients->length;
clients->length += 1;
return result;
}
fn bool deleteClientByAccountId(ClientList* clients, u64 id) {
bool succeeded = false;
Client blank_client = {0};
// i=1 because first client is null-client
for (u32 i = 1; i < clients->length && !succeeded; i++) {
if (clients->items[i].account_id == id) {
clients->items[i] = blank_client;
succeeded = true;
}
}
return succeeded;
}
fn u32 findClientHandle(ClientList* clients, SocketAddress address, i32 socket_fd) {
for (u32 i = 0; i < clients->length; i++) {
Client c = clients->items[i];
if (socketAddressEqual(address, c.address) && socket_fd == c.socket_fd) {
return i;
}
}
return 0;
}
fn StarSystem* findAccountsSystem(Account* a) {
for (u32 i = 0; i < STAR_SYSTEM_COUNT; i++) {
if (i == a->ship.system_idx) {
return &state.map[i];
}
}
return &state.map[0];
}
fn u32 starSystemPlanetCount(StarSystem* sys) {
u32 planet_count = 0;
for (u32 i = 0; i < MAX_PLANETS; i++) {
if (sys->planets[i].type != PlanetTypeNull) {
planet_count++;
}
}
return planet_count;
}
fn bool accountIsEmpty(Account* a) {
return a->id == 0 && a->name.length == 0;
}
fn bool shipIsNull(PlayerShip* ship) {
return ship->id == 0 && ship->base_cost == 0;
}
fn NetworkMessage makeMessageSystemPassengers(StarSystem* sys) {
NetworkMessage outgoing_message = { .use_socket = true };
u32 msg_i = 0;
outgoing_message.bytes[msg_i++] = (u8)MessageSystemPassengers;
outgoing_message.bytes[msg_i++] = (u8)sys->idx;
for (u32 i = 0; i < MAX_PASSENGER_JOB_OFFERS; i++) {
if (sys->offers[i].people) {
outgoing_message.bytes[msg_i++] = sys->offers[i].goal_system_idx;
outgoing_message.bytes[msg_i++] = sys->offers[i].people;
outgoing_message.bytes[msg_i++] = sys->offers[i].time_limit;
msg_i += writeU32ToBufferLE(outgoing_message.bytes + msg_i, sys->offers[i].offer);
}
}
outgoing_message.bytes_len = msg_i;
return outgoing_message;
}
fn NetworkMessage makeMessageSystemCommodities(StarSystem* sys) {
NetworkMessage outgoing_message = { .use_socket = true };
u32 planet_count = starSystemPlanetCount(sys);
u32 msg_i = 0;
outgoing_message.bytes[msg_i++] = (u8)MessageSystemCommodities;
outgoing_message.bytes[msg_i++] = (u8)sys->idx;
outgoing_message.bytes[msg_i++] = (u8)planet_count;
for (u32 i = 0; i < planet_count; i++) {
for (u32 ii = 0; ii < Commodity_Count; ii++) {
msg_i += writeU32ToBufferLE(outgoing_message.bytes + msg_i, sys->planets[i].commodities[ii]);
}
}
outgoing_message.bytes_len = msg_i;
return outgoing_message;
}
fn void sendMessageTransactionResult(i32 socket_fd, SocketAddress addr, u32 qty, bool buying, u32 credits) {
NetworkMessage outgoing_message = { .address = addr, .use_socket = true, .socket_fd = socket_fd };
u32 msg_i = 0;
outgoing_message.bytes[msg_i++] = (u8)MessageTransactionResult;
outgoing_message.bytes[msg_i++] = buying;
msg_i += writeU32ToBufferLE(outgoing_message.bytes + msg_i, qty);
msg_i += writeU32ToBufferLE(outgoing_message.bytes + msg_i, credits);
outgoing_message.bytes_len = msg_i;
outgoingMessageQueuePush(state.network_send_queue, &outgoing_message);
addSystemMessage((u8*)"Message TransactionResult sent");
}
fn NetworkMessage makeMessagePlayerDetails(PlayerShip ship) {
NetworkMessage outgoing_message = {0};
u32 msg_i = 0;
outgoing_message.bytes[msg_i++] = (u8)MessagePlayerDetails;
outgoing_message.bytes[msg_i++] = ship.type;
outgoing_message.bytes[msg_i++] = ship.system_idx;
outgoing_message.bytes[msg_i++] = ship.ready_to_depart;
outgoing_message.bytes[msg_i++] = ship.drive_efficiency;
outgoing_message.bytes[msg_i++] = ship.life_support_efficiency;
msg_i += writeU16ToBufferLE(outgoing_message.bytes + msg_i, ship.vacuum_cargo_slots);
msg_i += writeU16ToBufferLE(outgoing_message.bytes + msg_i, ship.climate_cargo_slots);
msg_i += writeU16ToBufferLE(outgoing_message.bytes + msg_i, ship.passenger_berths);
msg_i += writeU16ToBufferLE(outgoing_message.bytes + msg_i, ship.passenger_amenities_flags);
msg_i += writeU16ToBufferLE(outgoing_message.bytes + msg_i, ship.smugglers_hold_cu_m);
msg_i += writeU32ToBufferLE(outgoing_message.bytes + msg_i, ship.remaining_mortgage);
msg_i += writeF32ToBufferLE(outgoing_message.bytes + msg_i, ship.interest_rate);
msg_i += writeU32ToBufferLE(outgoing_message.bytes + msg_i, ship.cu_m_fuel);
msg_i += writeU32ToBufferLE(outgoing_message.bytes + msg_i, ship.cu_m_o2);
msg_i += writeU32ToBufferLE(outgoing_message.bytes + msg_i, ship.credits);
msg_i += writeU64ToBufferLE(outgoing_message.bytes + msg_i, ship.id);
for (u32 i = 0; i < Commodity_Count; i++) {
msg_i += writeU32ToBufferLE(outgoing_message.bytes + msg_i, ship.commodities[i]);
}
for (u32 i = 0; i < MAX_PASSENGER_BERTHS; i++) {
outgoing_message.bytes[msg_i++] = ship.passengers[i].goal_system_idx;
outgoing_message.bytes[msg_i++] = ship.passengers[i].people;
outgoing_message.bytes[msg_i++] = ship.passengers[i].turns_remaining;
msg_i += writeU32ToBufferLE(outgoing_message.bytes + msg_i, ship.passengers[i].reward);
}
outgoing_message.bytes_len = msg_i;
return outgoing_message;
}
fn void sendMessageJobAcceptResult(i32 socket_fd, SocketAddress addr, bool result) {
NetworkMessage outgoing_message = { .address = addr, .use_socket = true, .socket_fd = socket_fd };
u32 msg_i = 0;
outgoing_message.bytes[msg_i++] = (u8)MessageJobAcceptResult;
outgoing_message.bytes[msg_i++] = result;
outgoing_message.bytes_len = msg_i;
outgoingMessageQueuePush(state.network_send_queue, &outgoing_message);
addSystemMessage((u8*)"MessageJobAcceptResult sent");
}
fn void sendMessagePayoffResult(i32 socket_fd, SocketAddress addr) {
NetworkMessage outgoing_message = { .address = addr, .use_socket = true, .socket_fd = socket_fd };
u32 msg_i = 0;
outgoing_message.bytes[msg_i++] = (u8)MessagePayoffResult;
outgoing_message.bytes_len = msg_i;
outgoingMessageQueuePush(state.network_send_queue, &outgoing_message);
addSystemMessage((u8*)"MessagePayoffResult sent");
}
fn void sendMessageStarPositions(i32 socket_fd, SocketAddress addr) {
NetworkMessage outgoing_message = { .use_socket = true, .address = addr, .socket_fd = socket_fd };
// tell the client about the map
u32 star_msg_size = 2+MAX_PLANETS;
outgoing_message.bytes_len = 1+(star_msg_size*STAR_SYSTEM_COUNT);
outgoing_message.bytes[0] = (u8)MessageStarPositions;
for (u32 i = 0; i < STAR_SYSTEM_COUNT; i++) {
outgoing_message.bytes[1+(i*star_msg_size)] = (u8)state.map[i].x;
outgoing_message.bytes[2+(i*star_msg_size)] = (u8)state.map[i].y;
for (u32 ii = 0; ii < MAX_PLANETS; ii++) {
outgoing_message.bytes[3+ii+(i*star_msg_size)] = state.map[i].planets[ii].type;
}
}
outgoingMessageQueuePush(state.network_send_queue, &outgoing_message);
char sbuf[SBUFLEN] = {0};
sprintf(sbuf, "MessageStarPositions sent socket=%d, message_len=%d", socket_fd, outgoing_message.bytes_len);
addSystemMessage((u8*)sbuf);
}
fn void sendMessagePlayerDetails(i32 socket_fd, PlayerShip ship, SocketAddress addr) {
NetworkMessage outgoing_message = makeMessagePlayerDetails(ship);
outgoing_message.address = addr;
outgoing_message.use_socket = true;
outgoing_message.socket_fd = socket_fd;
outgoingMessageQueuePush(state.network_send_queue, &outgoing_message);
char sbuf[SBUFLEN] = {0};
sprintf(sbuf, "MessagePlayerDetails sent socket=%d, message_len=%d", socket_fd, outgoing_message.bytes_len);
addSystemMessage((u8*)sbuf);
}
fn void sendMessageAuctionBidResult(i32 socket_fd, SocketAddress addr, AuctionBidResult result) {
NetworkMessage outgoing_message = { .address = addr, .use_socket = true, .socket_fd = socket_fd };
u32 msg_i = 0;
outgoing_message.bytes[msg_i++] = (u8)MessageAuctionBidResult;
outgoing_message.bytes[msg_i++] = result;
outgoing_message.bytes_len = msg_i;
outgoingMessageQueuePush(state.network_send_queue, &outgoing_message);
addSystemMessage((u8*)"Message AuctionBidResult sent");
}
fn void handleIncomingMessage(u8* message, u32 len, SocketAddress sender, i32 socket) {
char sbuf[SBUFLEN] = {0};
sprintf(sbuf, "%d: %s from %s:%d\n", len, COMMAND_TYPE_STRINGS[message[0]], inet_ntoa(sender.sin_addr), sender.sin_port);
addSystemMessage((u8*)sbuf);
u32 msg_idx = 0;
ParsedClientCommand parsed = {
.type = (CommandType)message[msg_idx++],
.socket_fd = socket,
.sender_ip = sender.sin_addr.s_addr,
.sender_port = sender.sin_port,
};
u8 temp_bytes[UDP_MAX_MESSAGE_LEN] = {0};
String temp_str = {
.bytes = (char*)temp_bytes,
.length = 0,
.capacity = 0,
};
switch (parsed.type) {
case CommandBuyAuction: break; // nothing to parse but the type
case CommandLogin: {
// parse the login command
parsed.alt_port = ~readU16FromBufferLE(message + msg_idx);
msg_idx += 2;
parsed.alt_ip = ~readI32FromBufferLE(message + msg_idx);
msg_idx += 4;
// parse the name
u8 name_len = message[msg_idx++];
MemoryZero(temp_bytes, UDP_MAX_MESSAGE_LEN);
temp_str.length = name_len;
temp_str.capacity = temp_str.length+1;
for (u32 j = 0; j < temp_str.length; j++) {
temp_str.bytes[j] = message[msg_idx+j];
}
parsed.name = allocStringChunkList(&state.string_arena, temp_str);
msg_idx += temp_str.length;
// parse the password
u32 pw_len = 0;
while (message[msg_idx+pw_len]) {
pw_len += 1;
}
MemoryZero(temp_bytes, UDP_MAX_MESSAGE_LEN);
temp_str.length = pw_len;
temp_str.capacity = temp_str.length+1;
for (u32 j = 0; j < temp_str.length; j++) {
temp_str.bytes[j] = message[msg_idx+j];
}
parsed.pass = allocStringChunkList(&state.string_arena, temp_str);
msg_idx += temp_str.length;
MemoryZero(sbuf, SBUFLEN);
sprintf(sbuf, "Logging in player: %s %d %s\n", COMMAND_TYPE_STRINGS[parsed.type], name_len, message + 7);
addSystemMessage((u8*)sbuf);
} break;
case CommandPayMortgage: {
parsed.id = readU64FromBufferLE(message + msg_idx);
MemoryZero(sbuf, SBUFLEN);
sprintf(sbuf, "paying off %lld", parsed.id);
addSystemMessage((u8*)sbuf);
} break;
case CommandSetDestination: {
parsed.byte = message[1]; // index of system in array
} break;
case CommandReadyStatus: {
parsed.byte = message[1]; // boolean ready_to_depart
} break;
case CommandTransact: {
addSystemMessage((u8*)"command transact received");
parsed.byte = message[1]; // buy?
parsed.qty = readU32FromBufferLE(message + 2);
parsed.commodity = message[6];
} break;
case CommandCreateCharacter: {
addSystemMessage((u8*)"command create character received");
parsed.byte = message[1];
} break;
case CommandAcceptPassengerJob: {
addSystemMessage((u8*)"command accept passenger job received\n");
parsed.byte = message[1];
parsed.people = message[2];
parsed.time_limit = message[3];
parsed.qty = readU32FromBufferLE(message + 4);
} break;
case CommandInvalid:
case CommandType_Count: {
dbg("invalid command type");
} break;
}
pccThreadSafeQueuePush(state.network_recv_queue, &parsed);
}
fn void removeClientBySocketFd(i32 socket_fd) {
Client blank_client = {0};
// i=1 because first client is null-client
for (u32 i = 1; i < state.clients.length; i++) {
if (state.clients.items[i].socket_fd == socket_fd) {
state.clients.items[i] = blank_client;
}
}
}
fn void* receiveNetworkUpdates(void* tcp_server) {
TCPServer server = *(TCPServer*)tcp_server;
char sbuf[SBUFLEN] = {0};
sprintf(sbuf, "receiveNetworkUpdates() sock=%d\n", server.socket_fd);
addSystemMessage((u8*)sbuf);
infiniteReadTCPServer(&server, &should_quit, handleIncomingMessage, removeClientBySocketFd, addSystemMessage);
return NULL;
}
fn void* sendNetworkUpdates(void* tcp_server) {
TCPServer server = *(TCPServer*)tcp_server;
ThreadContext tctx = {0};
tctxInit(&tctx);
i32 socket = server.socket_fd;
char sbuf[SBUFLEN] = {0};
u64 send_loop = 0;
while (!should_quit) {
send_loop += 1;
u64 loop_start = osTimeMicrosecondsNow();
// 1. clear out our "outgoingMessage" queue
{
NetworkMessage to_send = { 0 };
NetworkMessage* next_to_send = outgoingMessageNonblockingQueuePop(state.network_send_queue, &to_send);
u8List bytes_list = { 0 };
while (next_to_send != NULL) {
if (to_send.use_socket) {
char sbuf[SBUFLEN] = {0};
sprintf(sbuf, "sendTCPMessage() sock=%d msg=%s len=%d\n", to_send.socket_fd, MESSAGE_STRINGS[to_send.bytes[0]], to_send.bytes_len);
addSystemMessage((u8*)sbuf);
sendTCPMessage(to_send);
} else { // UDP
bytes_list.items = to_send.bytes;
bytes_list.length = to_send.bytes_len;
bytes_list.capacity = to_send.bytes_len;
sendUDPu8List(socket, &to_send.address, &bytes_list);
}
next_to_send = outgoingMessageNonblockingQueuePop(state.network_send_queue, &to_send);
}
}
lockMutex(&state.client_mutex); {
// WARNING the `i` starts at 1 here because state.clients.items[0] is a "null" Client
for (u32 i = 1; i < state.clients.length; i++) {
Client client = state.clients.items[i];
if (client.active == false) {
continue;
}
if (send_loop % 2 == 0) {
// send the client the current auction details for their current system
Account* account = &state.accounts[client.account_id];
if (!accountIsEmpty(account)) {
StarSystem curr = state.map[account->ship.system_idx];
NetworkMessage auction_msg = {
.use_socket = true,
.socket_fd = client.socket_fd,
.address = client.address,
};
u32 msgidx = 0;
auction_msg.bytes[msgidx++] = MessageAuctionDetails;
auction_msg.bytes[msgidx++] = curr.auction.type;
auction_msg.bytes[msgidx++] = curr.auction.qty;
msgidx += writeU32ToBufferLE((u8*)auction_msg.bytes + msgidx, curr.auction.price);
msgidx += writeU32ToBufferLE((u8*)auction_msg.bytes + msgidx, curr.auction.started_at);
msgidx += writeU32ToBufferLE((u8*)auction_msg.bytes + msgidx, curr.auction.finished_at);
auction_msg.bytes_len = msgidx;
sendTCPMessage(auction_msg);
}
}
// update all the changed systems
NetworkMessage msg_data;
for (u32 ii = 0; ii < STAR_SYSTEM_COUNT; ii++) {
if (state.map[ii].changed == true || client.needs_systems_init) {
// send commodities
msg_data = makeMessageSystemCommodities(&state.map[ii]);
msg_data.address = client.address;
msg_data.socket_fd = client.socket_fd;
msg_data.use_socket = true;
sendTCPMessage(msg_data);
// send passenger jobs
MemoryZero(sbuf, SBUFLEN);
sprintf(sbuf, "sending passenger jobs for %s\n", STAR_NAMES[ii]);
addSystemMessage((u8*)sbuf);
msg_data = makeMessageSystemPassengers(&state.map[ii]);
msg_data.address = client.address;
msg_data.socket_fd = client.socket_fd;
msg_data.use_socket = true;
sendTCPMessage(msg_data);
}
}
// update all the changed accounts
for (u32 ii = 0; ii < ACCOUNT_LEN; ii++) {
if (state.accounts[ii].changed == true) {
msg_data = makeMessagePlayerDetails(state.accounts[ii].ship);
msg_data.address = client.address;
msg_data.socket_fd = client.socket_fd;
msg_data.use_socket = true;
sendTCPMessage(msg_data);
}
}
state.clients.items[i].needs_systems_init = false;
}
} unlockMutex(&state.client_mutex);
lockMutex(&state.mutex); {
for (u32 i = 0; i < STAR_SYSTEM_COUNT; i++) {
state.map[i].changed = false;
}
for (u32 i = 0; i < ACCOUNT_LEN; i++) {
state.accounts[i].changed = false;
}
} unlockMutex(&state.mutex);
u32 loop_duration = osTimeMicrosecondsNow() - loop_start;
i32 remaining_time = GOAL_NETWORK_SEND_LOOP_US - loop_duration;
if (remaining_time > 0) {
osSleepMicroseconds(remaining_time);
}
}
return NULL;
}
fn void* gameLoop(void* params) {
LaneCtx* lane_ctx = (LaneCtx*)params;
ThreadContext tctx = {
.lane_ctx = *lane_ctx,
};
tctxInit(&tctx);
char sbuf[SBUFLEN] = {0};
sprintf(sbuf, "Lane %lld (%lld) of %lld starting.", lane_ctx->lane_idx, LaneIdx(), lane_ctx->lane_count);
addSystemMessage((u8*)sbuf);
NetworkMessage outgoing_message = { .use_socket = true };
u64 loop_start;
u64 last_burn = 0;
u64 last_hp_regen = 0;
Arena scratch_arena = {0};
arenaInit(&scratch_arena);
while (!should_quit) {
loop_start = osTimeMicrosecondsNow();
if (LaneIdx() == 0) { // narrow
state.frame += 1;
if (state.all_accounts_ready) {
state.all_accounts_ready = false;
}
// 1. process client messages
lockMutex(&state.client_mutex); lockMutex(&state.mutex); {
u32 msg_iters = 0;
SocketAddress sender = {0};
ParsedClientCommand msg = {0};
ParsedClientCommand* next_net_msg = pccThreadSafeNonblockingQueuePop(state.network_recv_queue, &msg);
while (next_net_msg != NULL) {
msg_iters += 0;
sender.sin_addr.s_addr = msg.sender_ip;
sender.sin_port = msg.sender_port;
// find which client it is
u32 client_handle = findClientHandle(&state.clients, sender, msg.socket_fd);
Client* client = &state.clients.items[client_handle];
switch (msg.type) {
case CommandBuyAuction: {
if (client_handle == 0) break;
Account* account = &state.accounts[client->account_id];
StarSystem* player_sys = &state.map[account->ship.system_idx];
bool is_auction_still_running = player_sys->auction.finished_at == 0;
if (is_auction_still_running) {
bool player_has_money_for_purchase = account->ship.credits >= player_sys->auction.price;
bool player_has_cargo_space_for_purchase = (account->ship.vacuum_cargo_slots - usedVacuumCargoSlots(account->ship)) >= player_sys->auction.qty;
if (player_has_cargo_space_for_purchase && player_has_money_for_purchase) {
player_sys->auction.finished_at = state.frame;
account->ship.credits -= player_sys->auction.price;
account->ship.commodities[player_sys->auction.type] += player_sys->auction.qty;
sendMessageAuctionBidResult(msg.socket_fd, sender, AuctionBidResultPurchased);
sendMessagePlayerDetails(msg.socket_fd, account->ship, sender);
} else if (!player_has_money_for_purchase) {
sendMessageAuctionBidResult(msg.socket_fd, sender, AuctionBidResultNotEnoughMoney);
} else {
sendMessageAuctionBidResult(msg.socket_fd, sender, AuctionBidResultNotEnoughCargoSpace);
}
} else {
sendMessageAuctionBidResult(msg.socket_fd, sender, AuctionBidResultAuctionAlreadyFinished);
}
} break;
case CommandAcceptPassengerJob: {
if (client_handle == 0) break;
// move the offer out of the system and INTO the PlayerShip
Account* account = &state.accounts[client->account_id];
StarSystem* player_sys = &state.map[account->ship.system_idx];
PassengerJobOffer pjo = {
.goal_system_idx = msg.byte,
.people = msg.people,
.time_limit = msg.time_limit,
.offer = msg.qty,
};
// find the matching job, and IF the ship has room,
// "accept" it by clearing it from the system list and adding it to the ship
bool succeeded = false;
for (u32 i = 0; i < MAX_PASSENGER_JOB_OFFERS; i++) {
if (passengerJobEq(player_sys->offers[i], pjo)) {
if (shipAvailablePassengerBerths(account->ship) > 0) {
for (u32 ii = 0; ii < MAX_PASSENGER_BERTHS; ii++) {
if (account->ship.passengers[ii].people == 0) {
account->ship.passengers[ii].people = pjo.people;
account->ship.passengers[ii].goal_system_idx = pjo.goal_system_idx;
account->ship.passengers[ii].turns_remaining = pjo.time_limit;
account->ship.passengers[ii].reward = pjo.offer;
account->changed = true;
MemoryZero(&player_sys->offers[i], sizeof(PassengerJobOffer));
player_sys->changed = true;
succeeded = true;
sendMessageJobAcceptResult(client->socket_fd, sender, succeeded);
// end both for loops "break break;"
ii = MAX_PASSENGER_BERTHS;
i = MAX_PASSENGER_JOB_OFFERS;
break;
}
}
}
}
}
if (!succeeded) {
sendMessageJobAcceptResult(client->socket_fd, sender, succeeded);
}
} break;
case CommandPayMortgage: {
if (client_handle == 0) break;
Account* account = &state.accounts[client->account_id];
u32 amount_to_pay = msg.id;
if (amount_to_pay > account->ship.credits) {
amount_to_pay = account->ship.credits;
}
if (amount_to_pay > account->ship.remaining_mortgage) {
amount_to_pay = account->ship.remaining_mortgage;
}
account->ship.credits -= amount_to_pay;
account->ship.remaining_mortgage -= amount_to_pay;
account->changed = true;
sendMessagePayoffResult(client->socket_fd, sender);
} break;
case CommandSetDestination: {
if (client_handle == 0) break;
Account* account = &state.accounts[client->account_id];
account->destination_sys_idx = msg.byte;
account->changed = true;
} break;
case CommandReadyStatus: {
if (client_handle == 0) break;
Account* account = &state.accounts[client->account_id];
account->ship.ready_to_depart = msg.byte;
account->changed = true;
state.all_accounts_ready = true;
for (u32 i = 0; i < ACCOUNT_LEN; i++) {
if (!accountIsEmpty(&state.accounts[i])) {
if (state.accounts[i].ship.ready_to_depart == false) {
state.all_accounts_ready = false;
}
}
}
} break;
case CommandTransact: {
if (client_handle == 0) break;
MemoryZero(sbuf, SBUFLEN);
sprintf(sbuf, "Transact for client_handle=%d, on #%lld", client_handle, state.frame);
addSystemMessage((u8*)sbuf);
bool is_buying_from_system = msg.byte;
Account* account = &state.accounts[client->account_id];
StarSystem* sys = findAccountsSystem(account);
u32 total_available = sys->planets[0].commodities[msg.commodity] + sys->planets[1].commodities[msg.commodity] + sys->planets[2].commodities[msg.commodity];
u32 qty_traded = 0;
u32 credit_value = 0;
if (is_buying_from_system) {
u32 ship_space = account->ship.cu_m_fuel - account->ship.commodities[CommodityHydrogenFuel];
if (msg.commodity == CommodityOxygen) {
ship_space = account->ship.cu_m_o2 - account->ship.commodities[CommodityOxygen];
} else if (COMMODITIES[msg.commodity].unit == StorageUnitContainer) {
ship_space = account->ship.vacuum_cargo_slots - usedVacuumCargoSlots(account->ship);
}
for (u32 amount_to_buy = Min(msg.qty, total_available); amount_to_buy > 0; amount_to_buy--, total_available--, ship_space--) {
u32 price = priceForCommodity(msg.commodity, total_available, false);
if (price > account->ship.credits || ship_space == 0) {
amount_to_buy = 0;
break;
}
credit_value += price;
account->ship.credits -= price;
account->ship.commodities[msg.commodity] += 1;
qty_traded += 1;
if (sys->planets[0].commodities[msg.commodity]) {
sys->planets[0].commodities[msg.commodity] -= 1;
} else if (sys->planets[1].commodities[msg.commodity]) {
sys->planets[1].commodities[msg.commodity] -= 1;
} else if (sys->planets[2].commodities[msg.commodity]) {
sys->planets[2].commodities[msg.commodity] -= 1;
}
}
} else {
// selling to system logic
qty_traded = Min(msg.qty, account->ship.commodities[msg.commodity]);
u32 planet_count = starSystemPlanetCount(sys);
for (
u32 amount_to_sell = qty_traded;
amount_to_sell > 0;
amount_to_sell--, total_available++
) {
u32 price = priceForCommodity(msg.commodity, total_available, true);
credit_value += price;
account->ship.credits += price;
account->ship.commodities[msg.commodity] -= 1;
u8 planet_idx = rand() % planet_count;
sys->planets[planet_idx].commodities[msg.commodity] += 1;
}
}
sys->changed = true;
account->changed = true;
sendMessagePlayerDetails(client->socket_fd, account->ship, sender);
sendMessageTransactionResult(client->socket_fd, sender, qty_traded, is_buying_from_system, credit_value);
} break;
case CommandLogin: {
if (client_handle == 0) {
client_handle = pushClient(&state.clients, sender, msg.socket_fd);
client = &state.clients.items[client_handle];
MemoryZero(sbuf, SBUFLEN);
sprintf(sbuf, "pushed new client handle = %d\n", client_handle);
addSystemMessage((u8*)sbuf);
}
/*
struct in_addr ipaddr;
ipaddr.s_addr = htonl(msg.alt_ip);
printf("client #%d: SENDER=%s:%d\n", client_handle, inet_ntoa(sender.sin_addr), ntohs(sender.sin_port));
printf(" LAN=%s:%d %d vs %d vs %d\n", inet_ntoa(ipaddr), msg.alt_port, msg.alt_ip, htonl(msg.alt_ip), sender.sin_addr.s_addr);
*/
String name = stringChunkToString(&permanent_arena, msg.name);
releaseStringChunkList(&state.string_arena, &msg.name);
String pw = stringChunkToString(&permanent_arena, msg.pass);
releaseStringChunkList(&state.string_arena, &msg.pass);
Account* existing_account = findAccountByName(name);
MemoryZero(sbuf, SBUFLEN);
sprintf(sbuf, "name(%d): %s pw(%d): %s acct?: %d\n", name.length, name.bytes, pw.length, pw.bytes, existing_account != NULL);
addSystemMessage((u8*)sbuf);
if (existing_account) {
addSystemMessage((u8*)" existing account\n");
bool pw_matches = stringsEq(&pw, &existing_account->pw);
arenaDealloc(&permanent_arena, pw.capacity);
arenaDealloc(&permanent_arena, name.capacity);
if (pw_matches) {
addSystemMessage((u8*)" pw matched\n");
existing_account->changed = true;
sendMessageStarPositions(client->socket_fd, sender);
} else {
// tell the client they did a bad pw
outgoing_message.bytes[0] = (u8)MessageBadPw;
outgoing_message.bytes_len = 1;
outgoing_message.address = sender;
outgoing_message.socket_fd = client->socket_fd;
outgoingMessageQueuePush(state.network_send_queue, &outgoing_message);
addSystemMessage((u8*)"MessageBadPw sent\n");
break;
}
} else {
for (u32 i = 0; i < ACCOUNT_LEN; i++) {
if (accountIsEmpty(&state.accounts[i])) {
existing_account = &state.accounts[i];
existing_account->id = i;
break;
}
}
MemoryZero(sbuf, SBUFLEN);
sprintf(sbuf, "new account id=%d\n", existing_account->id);
addSystemMessage((u8*)sbuf);
existing_account->name = name;
existing_account->pw = pw;
}
client->account_id = existing_account->id;
if (!shipIsNull(&existing_account->ship)) {
// tell the client their account id
outgoing_message.bytes[0] = (u8)MessageCharacterId;
writeU64ToBufferLE(outgoing_message.bytes + 1, existing_account->ship.id);
outgoing_message.bytes_len = 9;
outgoing_message.address = sender;
outgoing_message.socket_fd = client->socket_fd;
outgoingMessageQueuePush(state.network_send_queue, &outgoing_message);
addSystemMessage((u8*)"MessageCharacterId sent\n");
} else {
// tell the client they made a new account
outgoing_message.bytes[0] = (u8)MessageNewAccountCreated;
outgoing_message.bytes_len = 1;
outgoing_message.address = sender;
outgoing_message.socket_fd = client->socket_fd;
outgoingMessageQueuePush(state.network_send_queue, &outgoing_message);
addSystemMessage((u8*)"MessageNewAccountCreated sent\n");
}
client->needs_systems_init = true;
MemoryZero(sbuf, SBUFLEN);
sprintf(sbuf, "client_handle=%d, acct_id=%d\n", client_handle, existing_account->id);
addSystemMessage((u8*)sbuf);
} break;
case CommandCreateCharacter: {
if (client_handle == 0) break;
Account* account = &state.accounts[client->account_id];
MemoryZero(sbuf, SBUFLEN);
sprintf(sbuf, "creating character for account id=%d, %s\n", account->id, SHIP_TYPE_STRINGS[msg.byte]);
addSystemMessage((u8*)sbuf);
if (shipIsNull(&account->ship)) {
ShipTemplate template = SHIPS[msg.byte];
PlayerShip player_ship = {
.type = msg.byte,
.drive_efficiency = template.drive_efficiency,
.life_support_efficiency = template.life_support_efficiency,
.vacuum_cargo_slots = template.vacuum_cargo_slots,
.climate_cargo_slots = template.climate_cargo_slots,
.passenger_berths = template.passenger_berths,
.passenger_amenities_flags = template.passenger_amenities_flags,
.smugglers_hold_cu_m = template.smugglers_hold_cu_m,
.base_cost = template.base_cost,
.remaining_mortgage = template.base_cost - STARTING_DOWN_PAYMENT,
.interest_rate = calcInterestRate(template.base_cost, STARTING_DOWN_PAYMENT),
.credits = 2000.0,
.cu_m_fuel = template.cu_m_fuel,
.cu_m_o2 = template.cu_m_o2,
.id = account->id,
};
player_ship.commodities[CommodityHydrogenFuel] = player_ship.cu_m_fuel;
player_ship.commodities[CommodityOxygen] = player_ship.cu_m_o2;
account->ship = player_ship;
MemoryZero(sbuf, SBUFLEN);
sprintf(sbuf, "ship_type=%s, client_handle=%d, acct_id=%d\n", SHIP_TYPE_STRINGS[msg.byte], client_handle, account->id);
addSystemMessage((u8*)sbuf);
u32 starting_system_idx = rand() % STAR_SYSTEM_COUNT;
StarSystem starting_system = state.map[starting_system_idx];
account->ship.system_idx = starting_system_idx;
// tell the client their account id
outgoing_message.address = sender;
outgoing_message.socket_fd = client->socket_fd;
outgoing_message.bytes_len = 9;
outgoing_message.bytes[0] = (u8)MessageCharacterId;
writeU64ToBufferLE(outgoing_message.bytes + 1, account->ship.id);
outgoingMessageQueuePush(state.network_send_queue, &outgoing_message);
addSystemMessage((u8*)"MessageCharacterId sent\n");
sendMessagePlayerDetails(client->socket_fd, account->ship, sender);
sendMessageStarPositions(client->socket_fd, sender);
outgoing_message = makeMessageSystemCommodities(&starting_system);
outgoing_message.address = sender;
outgoing_message.socket_fd = client->socket_fd;
outgoingMessageQueuePush(state.network_send_queue, &outgoing_message);
MemoryZero(sbuf, SBUFLEN);
sprintf(sbuf, "%s sent\n", MESSAGE_STRINGS[outgoing_message.bytes[0]]);
addSystemMessage((u8*)sbuf);
} else {
addSystemMessage((u8*)"client tried to create a character when he already has one.");
}
} break;
case CommandType_Count:
case CommandInvalid:
dbg("invalid message from queue");
break;
}
next_net_msg = pccThreadSafeNonblockingQueuePop(state.network_recv_queue, &msg);
msg_iters++;
}
if (state.all_accounts_ready) {
for (u32 i = 1; i < NET_SERVER_MAX_CLIENTS; i++) {
if (state.clients.items[i].active) {
outgoing_message.address = state.clients.items[i].address;
outgoing_message.socket_fd = state.clients.items[i].socket_fd;
outgoing_message.bytes_len = 1;
outgoing_message.bytes[0] = (u8)MessageTurnTick;
outgoingMessageQueuePush(state.network_send_queue, &outgoing_message);
}
}
}
if (state.someone_won) {
for (u32 i = 1; i < NET_SERVER_MAX_CLIENTS; i++) {
if (state.clients.items[i].active) {
outgoing_message.address = state.clients.items[i].address;
outgoing_message.socket_fd = state.clients.items[i].socket_fd;
outgoing_message.bytes_len = 2;
outgoing_message.bytes[0] = (u8)MessageGameOver;
outgoing_message.bytes[1] = state.winner_id;
outgoingMessageQueuePush(state.network_send_queue, &outgoing_message);
}
}
}
} unlockMutex(&state.mutex); unlockMutex(&state.client_mutex);
}
if (state.someone_won) {
return NULL;
}
LaneSync();
u32 player_count = 0;
for (u32 i = 0; i < ACCOUNT_LEN; i++) {
if (!accountIsEmpty(&state.accounts[i])) {
player_count += 1;
}
}
// tick all the star systems (auctions)
if (player_count > 0) { // don't bother until there's actually a player
StarSystem* sys = NULL;
Range1u64 sys_range = LaneRange(STAR_SYSTEM_COUNT);
for (u32 i = sys_range.min; i < sys_range.max; i++) {
sys = &state.map[i];
// tick the auction price
u32 grace_period_ends_at = sys->auction.started_at + (GOAL_GAME_LOOPS_PER_S * 3);
bool is_auction_still_running = sys->auction.finished_at == 0;
bool is_auction_grace_period_finished = state.frame > grace_period_ends_at;
if (is_auction_still_running && is_auction_grace_period_finished) {
f32 initial_price = COMMODITIES[sys->auction.type].price * AUCTION_PRICE_START_MULTIPLE;
f32 t_sec = ((f32)state.frame - (f32)grace_period_ends_at) / (f32)GOAL_GAME_LOOPS_PER_S;
// t is in minutes
f32 t = t_sec / 60;
f32 decay = -0.65 * t;
f32 floor_price = COMMODITIES[sys->auction.type].price * 0.9;
sys->auction.price = Max((initial_price * pow(EULERS_E, decay)), floor_price);
}
}
}
// 2. tick non-user entities
if (state.all_accounts_ready) {
addSystemMessage((u8*)"NEW TURN: ticking all_accounts_ready");
// tick all the star systems
StarSystem* sys = NULL;
Range1u64 sys_range = LaneRange(STAR_SYSTEM_COUNT);
for (u32 i = sys_range.min; i < sys_range.max; i++) {
sys = &state.map[i];
sys->changed = true;
// 1. consume and produce commodities
for (u32 ii = 0; ii < Commodity_Count; ii++) {
for (u32 iii = 0; iii < MAX_PLANETS; iii++) {
if (sys->planets[iii].type != PlanetTypeNull) {
if (sys->planets[iii].commodities[ii] > COMMODITIES[ii].consumption) {
sys->planets[iii].commodities[ii] -= COMMODITIES[ii].consumption;
} else {
sys->planets[iii].commodities[ii] = 0;
}
sys->planets[iii].commodities[ii] += sys->planets[iii].production[ii];
}
}
}
// 2. potentially create a new passenger job
u32 planet_divisor = ((MAX_PLANETS - starSystemPlanetCount(sys))+1);
u32 max_passenger_job_count = 1 + ((MAX_PASSENGER_JOB_OFFERS-1) / planet_divisor);
for (u32 ii = 0; ii < max_passenger_job_count; ii++) {
if (sys->offers[ii].people == 0) {
// TODO choose a system further away
sys->offers[ii].goal_system_idx = (i+1+(rand() % 6)) % STAR_SYSTEM_COUNT;
sys->offers[ii].people = 1 + (rand() % (MAX_PASSENGER_JOB_PEOPLE - 1));
sys->offers[ii].time_limit = 3 + (rand() % 5);
// TODO compute based on distance between people and time_limit
sys->offers[ii].offer = 1000 + (rand() % MAX_PASSENGER_JOB_PRICE);
break;
} else { //increase the offer amount each turn
sys->offers[ii].offer = (u32)((f32)sys->offers[ii].offer * 1.05);
}
}
// 3. reset the auction
MemoryZero(&sys->auction, sizeof(Auction));
sys->auction.started_at = state.frame;
sys->auction.type = AUCTION_COMMODITY_CUTOFF + (rand() % (Commodity_Count - AUCTION_COMMODITY_CUTOFF));
sys->auction.price = COMMODITIES[sys->auction.type].price * AUCTION_PRICE_START_MULTIPLE;
sys->auction.qty = COMMODITIES[sys->auction.type].consumption;
}
Range1u64 ship_range = LaneRange(player_count);
for (u32 i = ship_range.min; i < ship_range.max; i++) {
Account* acct = &state.accounts[i];
// move all the players
StarSystem dest = state.map[acct->destination_sys_idx];
StarSystem current = state.map[acct->ship.system_idx];
Pos2 dest_pos = {dest.x, dest.y};
Pos2 curr_pos = {current.x, current.y};
u32 projected_fuel_cost = fuelCostForTravel(acct->ship.drive_efficiency, curr_pos, dest_pos);
bool have_enough_fuel = projected_fuel_cost <= acct->ship.commodities[CommodityHydrogenFuel];
u32 projected_oxygen_cost = oxyCostForTravel(&acct->ship, curr_pos, dest_pos);
bool have_enough_oxy = projected_oxygen_cost <= acct->ship.commodities[CommodityOxygen];
if (have_enough_fuel || have_enough_oxy) {
// remove the fuel they used on the journey
acct->ship.commodities[CommodityHydrogenFuel] -= projected_fuel_cost;
// remove the oxygen they used on the journey
acct->ship.commodities[CommodityOxygen] -= projected_oxygen_cost;
// set the pos to be the system they had as destination
acct->ship.system_idx = acct->destination_sys_idx;
}
acct->ship.ready_to_depart = false;
acct->changed = true;
// increase the mortgage from interest
if (!shipIsNull(&acct->ship)) {
if (acct->ship.remaining_mortgage > 0) {
f64 compounding = ((f64)acct->ship.remaining_mortgage) * (f64)(acct->ship.interest_rate / 100.0);
acct->ship.remaining_mortgage += (u32)compounding;
}
}
// check for the completion of a passenger job (MUST COME AFTER acct->ship.system_idx is updated)
for (u32 ii = 0; ii < MAX_PASSENGER_BERTHS; ii++) {
Passenger* job = &acct->ship.passengers[ii];
bool is_valid_job = job->people > 0;
bool is_at_job_destination = job->goal_system_idx == acct->ship.system_idx;
if (is_valid_job) {
if (is_at_job_destination) {
acct->ship.credits += job->reward;
MemoryZero(sbuf, SBUFLEN);
sprintf(sbuf, "%d credits awarded to %s for finishing passenger job\n", job->reward, acct->name.bytes);
addSystemMessage((u8*)sbuf);
MemoryZero(job, sizeof(Passenger));
MemoryZero(sbuf, SBUFLEN);
sprintf(sbuf, "%s FINISHED a passenger job!\n", acct->name.bytes);
addSystemMessage((u8*)sbuf);
// send a job completion message?
for (u32 i = 1; i < state.clients.length; i++) {
if (state.clients.items[i].active && state.clients.items[i].account_id == acct->id) {
outgoing_message.address = state.clients.items[i].address;
outgoing_message.socket_fd = state.clients.items[i].socket_fd;
outgoing_message.bytes_len = 2;
outgoing_message.bytes[0] = (u8)MessageJobComplete;
outgoing_message.bytes[1] = true;
outgoingMessageQueuePush(state.network_send_queue, &outgoing_message);
MemoryZero(sbuf, SBUFLEN);
sprintf(sbuf, "sent MessageJobComplete to %s\n", acct->name.bytes);
addSystemMessage((u8*)sbuf);
break;
}
}
} else {
job->turns_remaining -= 1;
if (job->turns_remaining == 0) {
// they failed the job
MemoryZero(job, sizeof(Passenger));
MemoryZero(sbuf, SBUFLEN);
sprintf(sbuf, "%s failed a passenger job\n", acct->name.bytes);
addSystemMessage((u8*)sbuf);
// send a job failed message?
for (u32 i = 1; i < state.clients.length; i++) {
if (state.clients.items[i].active && state.clients.items[i].account_id == acct->id) {
outgoing_message.address = state.clients.items[i].address;
outgoing_message.socket_fd = state.clients.items[i].socket_fd;
outgoing_message.bytes_len = 2;
outgoing_message.bytes[0] = (u8)MessageJobComplete;
outgoing_message.bytes[1] = false;
outgoingMessageQueuePush(state.network_send_queue, &outgoing_message);
MemoryZero(sbuf, SBUFLEN);
sprintf(sbuf, "sent MessageJobComplete to %s\n", acct->name.bytes);
addSystemMessage((u8*)sbuf);
break;
}
}
}
}
}
}
}
}
// look for a winner
Range1u64 ship_range = LaneRange(player_count);
for (u32 i = ship_range.min; i < ship_range.max; i++) {
Account* acct = &state.accounts[i];
if (!shipIsNull(&acct->ship)) {
if (acct->ship.remaining_mortgage == 0) {
state.winner_id = acct->id;
state.someone_won = true;
MemoryZero(sbuf, SBUFLEN);
sprintf(sbuf, "%s WON!!! %d\n", acct->name.bytes, i);
addSystemMessage((u8*)sbuf);
acct->changed = true;
break;
}
}
}
// 3. scratch cleanup
arenaClear(&scratch_arena);
// 4. loop timing
u32 loop_duration = osTimeMicrosecondsNow() - loop_start;
i32 remaining_time = GOAL_GAME_LOOP_US - loop_duration;
if (remaining_time > 0) {
osSleepMicroseconds(remaining_time);
}
}
return NULL;
}
fn void setHighProductionCommodity(Planet* p, CommodityType t) {
p->commodities[t] = (COMMODITIES[t].qty / 2) + (rand() % COMMODITIES[t].qty);
p->production[t] = COMMODITIES[t].consumption + (rand() % COMMODITIES[t].consumption);
if (t == CommodityHydrogenFuel || t == CommodityOxygen) {
p->commodities[t] = COMMODITIES[t].qty;
}
}
fn void setLowProductionCommodity(Planet* p, CommodityType t) {
p->commodities[t] = rand() % (COMMODITIES[t].qty / 2);
p->production[t] = rand() % (COMMODITIES[t].consumption / 2);
if (t == CommodityHydrogenFuel || t == CommodityOxygen) {
p->commodities[t] = COMMODITIES[t].qty / 2;
}
}
fn bool updateAndRender(TuiState* tui, void* s, u8* input_buffer, u64 loop_count) {
State* state = (State*) s;
Dim2 screen_dimensions = tui->screen_dimensions;
if (screen_dimensions.height > MAX_SCREEN_HEIGHT || screen_dimensions.width > MAX_SCREEN_WIDTH) {
printf("\033[2J\033[%d;%df Your screen is too damn big. Shrink it to %dx%d max, bro... geez", 1,1, MAX_SCREEN_WIDTH, MAX_SCREEN_HEIGHT);
fflush(stdout);
return should_quit;
}
char sbuf[SBUFLEN] = {0};
// operate on screen-based input+state
bool user_pressed_tab = input_buffer[0] == ASCII_TAB && input_buffer[1] == 0;
bool user_pressed_shift_tab = input_buffer[0] == '\x1b' && input_buffer[1] == '[' && input_buffer[2] == 'Z';
bool user_pressed_space = input_buffer[0] == ' ' && input_buffer[1] == 0;
bool user_pressed_esc = input_buffer[0] == ASCII_ESCAPE && input_buffer[1] == 0;
bool user_pressed_a_number = input_buffer[0] >= '0' && input_buffer[0] <= '9' && input_buffer[1] == 0;
bool user_pressed_up = input_buffer[0] == 27 && input_buffer[1] == 91 && input_buffer[2] == 65;
bool user_pressed_down = input_buffer[0] == 27 && input_buffer[1] == 91 && input_buffer[2] == 66;
bool user_pressed_left = input_buffer[0] == 27 && input_buffer[1] == 91 && input_buffer[2] == 68;
bool user_pressed_right = input_buffer[0] == 27 && input_buffer[1] == 91 && input_buffer[2] == 67;
bool user_pressed_backspace = input_buffer[0] == ASCII_BACKSPACE || input_buffer[0] == ASCII_DEL;
bool user_pressed_enter = input_buffer[0] == ASCII_RETURN || input_buffer[0] == ASCII_LINE_FEED;
if (user_pressed_tab || user_pressed_shift_tab) {
state->tab = state->tab == TabDebug ? TabMap : TabDebug;
}
// show what ip to connect to
renderStrToBuffer(tui->frame_buffer, screen_dimensions.width - 18, 1, state->server_ip_address.bytes, screen_dimensions);
if (input_buffer[0] == 'q' || user_pressed_esc) {
should_quit = true;
}
if (state->someone_won) {
for (u32 i = 0; i < ACCOUNT_LEN; i++) {
Account* acct = &state->accounts[i];
if (!shipIsNull(&acct->ship)) {
if (acct->ship.remaining_mortgage == 0) {
MemoryZero(sbuf, SBUFLEN);
sprintf(sbuf, "%s WON!!!", acct->name.bytes);
renderStrToBuffer(tui->frame_buffer, (screen_dimensions.width-strlen(sbuf)) /2, 10, sbuf, screen_dimensions);
return should_quit;
}
}
}
}
// draw the tabs box
u32 tabs_y = 0;
u32 box_y = tabs_y + 2;
Box box = {
.x = 1,
.y = box_y,
.width = screen_dimensions.width - 3,
.height = screen_dimensions.height - box_y - 2,
};
drawAnsiBox(tui->frame_buffer, box, screen_dimensions, true);
u32 tx = 2;
// draw the actual tabs
for (u32 i = 0; i < Tab_Count; i++) {
u32 tab_len = strlen(TAB_STRS[i]);
Box b = { .x = tx, .y = tabs_y, .width = tab_len+1, .height = 1 };
drawAnsiBox(tui->frame_buffer, b, screen_dimensions, state->tab == i);
renderStrToBuffer(tui->frame_buffer, tx+1, tabs_y+ 1, TAB_STRS[i], screen_dimensions);
tx += (tab_len + 3);
}
switch (state->tab) {
case TabDebug: {
renderSystemMessages(tui->frame_buffer, tui->screen_dimensions, box);
} break;
case TabMap: {
u8 COLORS[] = {ANSI_HIGHLIGHT_RED, ANSI_HIGHLIGHT_BLUE, ANSI_HIGHLIGHT_YELLOW, ANSI_HIGHLIGHT_GREEN, ANSI_WHITE};
u32 xw = 4;
u32 yh = 2;
if (box.width <= MAP_WIDTH*xw) {
renderStrToBuffer(tui->frame_buffer, box.x+2, box.y+2, "Your screen needs to be wider...", screen_dimensions);
break;
}
if (box.height < MAP_HEIGHT*yh) {
renderStrToBuffer(tui->frame_buffer, box.x+2, box.y+2, "Your screen needs to be taller...", screen_dimensions);
break;
}
// render the damn map
u32 x_off = box.x+((box.width - MAP_WIDTH*xw)/2);
u32 y_off = box.y+1;
for (u32 i = 0; i < MAP_WIDTH*xw; i++) {
for (u32 ii = 0; ii < MAP_HEIGHT*yh; ii++) {
u32 sysx = i / xw;
u32 sysy = ii / yh;
u32 bufpos = XYToPos(x_off+i, y_off+ii, screen_dimensions.width);
tui->frame_buffer[bufpos].bytes[0] = ' ';
tui->frame_buffer[bufpos].foreground = ANSI_WHITE;
tui->frame_buffer[bufpos].background = ANSI_BLACK;
// try to colorize the map cell if a player is on it
for (u32 iii = 0; iii < ACCOUNT_LEN; iii++) {
Account* acct = &state->accounts[iii];
if (acct->name.length > 0) {
StarSystem sys = state->map[acct->ship.system_idx];
if (sys.x == sysx && sys.y == sysy) {
Box current_key = { .height = yh, .width = xw, .x = x_off+i, .y = y_off+ii };
colorizeBox(tui, current_key, COLORS[iii], 0, ' ');
}
}
}
}
}
for (u32 i = 0; i < STAR_SYSTEM_COUNT; i++) {
StarSystem sys = state->map[i];
u32 sysx = x_off + xw*sys.x;
u32 sysy = y_off + yh*sys.y;
// clear the render-grid for this "tile" position
for (u32 ii = 0; ii < xw; ii++) {
for (u32 iii = 0; iii < yh; iii++) {
u32 bufpos = XYToPos(sysx+ii, sysy+iii, screen_dimensions.width);
tui->frame_buffer[bufpos].bytes[0] = 0;
}
}
renderUtf8CodePoint(tui, sysx, sysy, "⭐");
renderUtf8CodePoint(
tui,
sysx +2,
sysy,
strForPlanet(sys.planets[0].type)
);
renderUtf8CodePoint(
tui,
sysx,
sysy +1,
strForPlanet(sys.planets[1].type)
);
renderUtf8CodePoint(
tui,
sysx +2,
sysy +1,
strForPlanet(sys.planets[2].type)
);
renderStrToBuffer(tui->frame_buffer, sysx-((strlen(STAR_NAMES[i])-4)/2), sysy-1, STAR_NAMES[i], screen_dimensions);
}
// TODO fix the background bleed from previous line
// map key
y_off += 1+(MAP_HEIGHT*yh);
x_off = box.x + 3;
for (u32 i = 0; i < ACCOUNT_LEN; i++, x_off += 18) {
Account* acct = &state->accounts[i];
if (acct->name.length > 0) {
Box current_key = { .height = yh, .width = xw, .x = x_off, .y = y_off };
colorizeBox(tui, current_key, COLORS[i], 0, ' ');
renderStrToBuffer(tui->frame_buffer, x_off+5, y_off, acct->name.bytes, screen_dimensions);
MemoryZero(sbuf, SBUFLEN);
sprintf(sbuf, "$%d", acct->ship.remaining_mortgage);
renderStrToBuffer(tui->frame_buffer, x_off+5, y_off+1, sbuf, screen_dimensions);
}
}
} break;
case Tab_Count: {} break;
}
return should_quit;
}
// THE SERVER
i32 main(i32 argc, ptr argv[]) {
osInit();
// multi-thread architecture:
// - the gameLoop() which just inifinite loops every "tick" and processes user input and updates gameworld state
// - this is N "lanes" as described https://www.rfleury.com/p/multi-core-by-default
// such that we can split room-work among all the various cores on our machine
// - one is the sendNetworkUpdates() infinite loop, which sends a UDP snapshot-or-delta update to each connected client N/sec
// - one is the receiveNetworkUpdates() infinte loop, which waits for new UDP messages from clients
// 1. initialize gameworld, and spin off infinite game-loop thread
// 2. spin off sendNetworkUpdates() infinite loop thread
// 3. infinitely wait for incoming UDP messages and process them (usually by just dropping user-commands into the relevant block of shared memory)
// 1. initialize gameworld, and spin off infinite game-loop thread
arenaInit(&permanent_arena);
arenaInit(&state.game_scratch);
arenaInit(&state.string_arena.a);
state.string_arena.mutex = newMutex();
state.client_mutex = newMutex();
state.mutex = newMutex();
state.network_recv_queue = newPCCThreadQueue(&permanent_arena);
state.network_send_queue = newOutgoingMessageQueue(&permanent_arena);
// alloc the global hashmap of rooms
// init + alloc clients
state.clients.capacity = NET_SERVER_MAX_CLIENTS;
state.clients.length = 1; // making entry 0 to be a "null" client
state.clients.items = (Client*)arenaAllocArray(&permanent_arena, Client, NET_SERVER_MAX_CLIENTS);
for (i32 i = 0; i < SYSTEM_MESSAGES_LEN; i++) {
system_messages[i].capacity = MAX_SYSTEM_MESSAGE_LEN;
system_messages[i].length = 0;
system_messages[i].items = arenaAllocArraySized(&permanent_arena, sizeof(u8), MAX_SYSTEM_MESSAGE_LEN);
}
state.server_ip_address.bytes = arenaAllocArraySized(&permanent_arena, sizeof(u8), 16);
state.server_ip_address.capacity = 16;
{
struct ifaddrs* ifaddr, *ifa;
getifaddrs(&ifaddr);
for (ifa = ifaddr; ifa; ifa = ifa->ifa_next) {
if (!ifa->ifa_addr || ifa->ifa_addr->sa_family != AF_INET) continue;
if (strcmp(ifa->ifa_name, "en0") != 0) continue;
inet_ntop(AF_INET, &((struct sockaddr_in*)ifa->ifa_addr)->sin_addr, state.server_ip_address.bytes, 16);
}
freeifaddrs(ifaddr);
}
// GAME LOGIC SETUP
// set position of all star systems
state.map[0].x = 3;
state.map[0].y = 4;
state.map[1].x = 13;
state.map[1].y = 2;
state.map[2].x = 22;
state.map[2].y = 3;
state.map[3].x = 25;
state.map[3].y = 8;
state.map[4].x = 17;
state.map[4].y = 9;
state.map[5].x = 6;
state.map[5].y = 7;
for (u32 i = 0; i < STAR_SYSTEM_COUNT; i++) {
state.map[i].idx = i;
state.map[i].name = STAR_NAMES[i];
if (state.map[i].x == 0 && state.map[i].y == 0) {
state.map[i].x = rand() % MAP_WIDTH;
state.map[i].y = rand() % MAP_HEIGHT;
}
// ensure all the star systems are "spaced out" a bit
bool conflicting_pos = false;
for (u32 ii = 0; ii < i; ii++) {
bool same_pos = state.map[ii].x == state.map[i].x && state.map[ii].y == state.map[i].y;
bool north_pos = state.map[ii].x == state.map[i].x && state.map[ii].y == state.map[i].y+1;
bool south_pos = state.map[ii].x == state.map[i].x && state.map[ii].y+1 == state.map[i].y;
bool west_pos = state.map[ii].x == state.map[i].x+1 && state.map[ii].y == state.map[i].y;
bool east_pos = state.map[ii].x+1 == state.map[i].x && state.map[ii].y == state.map[i].y;
if (same_pos || north_pos || south_pos || west_pos || east_pos) {
conflicting_pos = true;
}
}
if (conflicting_pos) {
i--; // re-do the position calc
}
}
// now, build out the commodity info and passenger jobs for the systems
char sbuf[SBUFLEN] = {0};
for (u32 i = 0; i < STAR_SYSTEM_COUNT; i++) {
// setup the auction
state.map[i].auction.started_at = state.frame;
state.map[i].auction.type = AUCTION_COMMODITY_CUTOFF + (rand() % (Commodity_Count - AUCTION_COMMODITY_CUTOFF));
state.map[i].auction.price = COMMODITIES[state.map[i].auction.type].price * AUCTION_PRICE_START_MULTIPLE;
state.map[i].auction.qty = COMMODITIES[state.map[i].auction.type].consumption;
// setup the planets
u32 planet_count = rand() % MAX_PLANETS + 1;
switch (i) {
case 0:
addSystemMessage((u8*)"Vega Earth Gas");
planet_count = 2;
state.map[i].planets[0].type = PlanetTypeEarth;
state.map[i].planets[1].type = PlanetTypeGas;
break;
case 1:
addSystemMessage((u8*)"Aldebara Earth Earth Asteroid");
planet_count = 3;
state.map[i].planets[0].type = PlanetTypeEarth;
state.map[i].planets[1].type = PlanetTypeEarth;
state.map[i].planets[2].type = PlanetTypeAsteroid;
break;
case 2:
addSystemMessage((u8*)"Mining Colony 17 Asteroid");
planet_count = 1;
state.map[i].planets[0].type = PlanetTypeAsteroid;
break;
case 3:
planet_count = 2;
state.map[i].planets[0].type = PlanetTypeGas;
state.map[i].planets[1].type = PlanetTypeMoon;
break;
case 4:
planet_count = 3;
state.map[i].planets[0].type = PlanetTypeStation;
state.map[i].planets[1].type = PlanetTypeAsteroid;
state.map[i].planets[2].type = PlanetTypeAsteroid;
break;
case 5:
planet_count = 2;
state.map[i].planets[0].type = PlanetTypeStation;
state.map[i].planets[1].type = PlanetTypeMoon;
break;
default:
break;
}
for (u32 ii = 0; ii < planet_count; ii++) {
Planet* p = &state.map[i].planets[ii];
if (p->type == PlanetTypeNull) {
addSystemMessage((u8*)"random planet type");
p->type = 1+(PlanetType)(rand() % (PlanetType_Count -1));
}
// default commodity + production roll
for (u32 iii = 0; iii < Commodity_Count; iii++) {
p->commodities[iii] = (COMMODITIES[iii].qty / 5) + (rand() % COMMODITIES[iii].qty);
p->production[iii] = 1 + (rand() % COMMODITIES[iii].consumption);
}
// everyone starts with "a lot" of fuel and o2
p->commodities[CommodityHydrogenFuel] = COMMODITIES[CommodityHydrogenFuel].qty;
p->commodities[CommodityOxygen] = COMMODITIES[CommodityOxygen].qty;
// now, override for the "specialty" of the planet
switch (p->type) {
case PlanetTypeEarth: {
setHighProductionCommodity(p, CommodityWater);
setHighProductionCommodity(p, CommodityFood);
setLowProductionCommodity(p, CommodityHydrogenFuel);
setLowProductionCommodity(p, CommodityOre);
setLowProductionCommodity(p, CommodityMetals);
} break;
case PlanetTypeGas: {
// a lot of fuel and chemicals
setHighProductionCommodity(p, CommodityHydrogenFuel);
setHighProductionCommodity(p, CommodityOxygen);
setHighProductionCommodity(p, CommodityWater);
setHighProductionCommodity(p, CommodityPlastics);
setLowProductionCommodity(p, CommodityOre);
setLowProductionCommodity(p, CommodityMetals);
setLowProductionCommodity(p, CommodityRawTextiles);
setLowProductionCommodity(p, CommodityGlass);
setLowProductionCommodity(p, CommodityHandTools);
} break;
case PlanetTypeMoon: {
// a lot of manufactured goods
setHighProductionCommodity(p, CommodityElectronics);
setHighProductionCommodity(p, CommodityGlass);
setLowProductionCommodity(p, CommodityOre);
setLowProductionCommodity(p, CommodityHydrogenFuel);
setLowProductionCommodity(p, CommodityOxygen);
setLowProductionCommodity(p, CommodityWater);
setLowProductionCommodity(p, CommodityFood);
} break;
case PlanetTypeAsteroid: {
// a lot of raw metals
setHighProductionCommodity(p, CommodityOre);
setHighProductionCommodity(p, CommodityMetals);
setHighProductionCommodity(p, CommoditySemiConductors);
setLowProductionCommodity(p, CommodityHydrogenFuel);
setLowProductionCommodity(p, CommodityOxygen);
setLowProductionCommodity(p, CommodityWater);
setLowProductionCommodity(p, CommodityFood);
setLowProductionCommodity(p, CommodityElectronics);
setLowProductionCommodity(p, CommodityPlastics);
setLowProductionCommodity(p, CommodityHandTools);
} break;
case PlanetTypeStation: {
// a lot of ??? drugs?
setHighProductionCommodity(p, CommodityElectronics);
setHighProductionCommodity(p, CommodityPlastics);
setHighProductionCommodity(p, CommodityHandTools);
setLowProductionCommodity(p, CommodityHydrogenFuel);
setLowProductionCommodity(p, CommodityOxygen);
setLowProductionCommodity(p, CommodityWater);
setLowProductionCommodity(p, CommodityFood);
} break;
case PlanetTypeNull:
case PlanetType_Count:
break;
}
}
MemoryZero(sbuf, SBUFLEN);
sprintf(
sbuf,
"%s: fuel: %d o2: %d",
STAR_NAMES[i],
state.map[i].planets[0].commodities[CommodityHydrogenFuel] +
state.map[i].planets[1].commodities[CommodityHydrogenFuel] +
state.map[i].planets[2].commodities[CommodityHydrogenFuel],
state.map[i].planets[0].commodities[CommodityOxygen] +
state.map[i].planets[1].commodities[CommodityOxygen] +
state.map[i].planets[2].commodities[CommodityOxygen]
);
addSystemMessage((u8*)sbuf);
u32 planet_divisor = ((MAX_PLANETS - planet_count)+1);
u32 offer_count = 1 + (rand() % (MAX_PASSENGER_JOB_OFFERS / planet_divisor));
for (u32 ii = 0; ii < offer_count; ii++) {
// TODO choose a system further away
state.map[i].offers[ii].goal_system_idx = (i+1+(rand() % 6)) % STAR_SYSTEM_COUNT;
state.map[i].offers[ii].people = 1 + (rand() % (MAX_PASSENGER_JOB_PEOPLE - 1));
state.map[i].offers[ii].time_limit = 1 + (rand() % 3);
// TODO compute based on distance between people and time_limit
state.map[i].offers[ii].offer = 1000 + (rand() % MAX_PASSENGER_JOB_PRICE);
}
}
// 2. spin off sendNetworkUpdates() infinite loop thread
TCPServer server = createTCPServer(SERVER_PORT);
if (!server.ready) {
exitWithErrorMessage("Couldn't start the server");
}
Thread send_thread = spawnThread(&sendNetworkUpdates, &server);
// 3. infinitely wait for incoming UDP messages and process them (usually by just dropping user-commands into the relevant block of shared memory)
Thread recv_thread = spawnThread(&receiveNetworkUpdates, &server);
u64 lane_broadcast_val = 0;
Barrier barrier = osBarrierAlloc(GAME_THREAD_CONCURRENCY);
LaneCtx lane_ctxs[GAME_THREAD_CONCURRENCY] = {0};
Thread game_threads[GAME_THREAD_CONCURRENCY] = {0};
for (u32 i = 0; i < GAME_THREAD_CONCURRENCY; i++) {
lane_ctxs[i].lane_idx = i;
lane_ctxs[i].lane_count = GAME_THREAD_CONCURRENCY;
lane_ctxs[i].barrier = barrier;
lane_ctxs[i].broadcast_memory = &lane_broadcast_val;
game_threads[i] = spawnThread(&gameLoop, &lane_ctxs[i]);
}
infiniteUILoop(
MAX_SCREEN_WIDTH,
MAX_SCREEN_HEIGHT,
GOAL_GAME_LOOP_US,
&state,
updateAndRender
);
for (u32 i = 0; i < GAME_THREAD_CONCURRENCY; i++) {
osThreadJoin(game_threads[i], MAX_u64);
}
osThreadJoin(recv_thread, MAX_u64);
osThreadJoin(send_thread, MAX_u64);
return 0;
}
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