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basic auction process works, but I still need to restrict the purchase/sale of these commodities on the Market tab

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Tenari
2026-03-26 07:28:10 -05:00
parent 4aece817b6
commit c9f33d9b0e
3 changed files with 121 additions and 20 deletions
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src/server.c
+36 -2
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@@ -419,6 +419,16 @@ fn void sendMessagePlayerDetails(PlayerShip ship, SocketAddress addr) {
addSystemMessage((u8*)"MessagePlayerDetails sent");
}
fn void sendMessageAuctionBidResult(SocketAddress addr, AuctionBidResult result) {
UDPMessage outgoing_message = {.address = addr};
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) {
dbg("%d: %s from %s:%d\n", len, command_type_strings[message[0]], inet_ntoa(sender.sin_addr), sender.sin_port);
char sbuf[SBUFLEN] = {0};
@@ -435,6 +445,7 @@ fn void handleIncomingMessage(u8* message, u32 len, SocketAddress sender, i32 so
.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);
@@ -690,6 +701,29 @@ fn void* gameLoop(void* params) {
u32 client_handle = findClientHandleBySocketAddress(&state.clients, sender);
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(sender, AuctionBidResultPurchased);
sendMessagePlayerDetails(account->ship, sender);
} else if (!player_has_money_for_purchase) {
sendMessageAuctionBidResult(sender, AuctionBidResultNotEnoughMoney);
} else {
sendMessageAuctionBidResult(sender, AuctionBidResultNotEnoughCargoSpace);
}
} else {
sendMessageAuctionBidResult(sender, AuctionBidResultAuctionAlreadyFinished);
}
} break;
case CommandAcceptPassengerJob: {
if (client_handle == 0) break;
// move the offer out of the system and INTO the PlayerShip
@@ -937,7 +971,7 @@ fn void* gameLoop(void* params) {
.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,
.credits = 20000.0,
.cu_m_fuel = template.cu_m_fuel,
.cu_m_o2 = template.cu_m_o2,
.id = account->id,
@@ -1039,7 +1073,7 @@ fn void* gameLoop(void* params) {
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 = -0.30 * t;
f32 decay = -0.50 * t;
f32 floor_price = COMMODITIES[sys->auction.type].price * 0.9;
sys->auction.price = Max((initial_price * pow(EULERS_E, decay)), floor_price);
}