Add console command to offer a company for sale

src/company_cmd.cpp

@@ -943,6 +943,18 @@ CommandCost CmdCompanyCtrl(TileIndex tile, DoCommandFlag flags, uint32 p1, uint3
 			break;
 		}
 
+		case CCA_SALE: {
+			Company *c = Company::GetIfValid(company_id);
+			if (c == nullptr) return CMD_ERROR;
+
+			if (!(flags & DC_EXEC)) return CommandCost();
+
+			c->bankrupt_value = CalculateCompanyValue(c, false);
+			c->bankrupt_asked = 1 << c->index; // Don't ask the owner
+			c->bankrupt_timeout = 0;
+			break;
+		}
+
 		default: return CMD_ERROR;
 	}
 

src/company_type.h

@@ -65,6 +65,7 @@ enum CompanyCtrlAction {
 	CCA_NEW,    ///< Create a new company.
 	CCA_NEW_AI, ///< Create a new AI company.
 	CCA_DELETE, ///< Delete a company.
+	CCA_SALE,   ///< Offer a company for sale.
 
 	CCA_END,    ///< Sentinel for end.
 };

src/console_cmds.cpp

@@ -962,6 +962,30 @@ DEF_CONSOLE_CMD(ConResetCompany)
 	return true;
 }
 
+DEF_CONSOLE_CMD(ConOfferCompanySale)
+{
+	if (argc == 0) {
+		IConsoleHelp("Offer a company for sale. Usage: 'offer_company_sale <company-id>'");
+		IConsoleHelp("For company-id's, see the list of companies from the dropdown menu. Company 1 is 1, etc.");
+		return true;
+	}
+
+	if (argc != 2) return false;
+
+	CompanyID index = (CompanyID)(atoi(argv[1]) - 1);
+
+	/* Check valid range */
+	if (!Company::IsValidID(index)) {
+		IConsolePrintF(CC_ERROR, "Company does not exist. Company-id must be between 1 and %d.", MAX_COMPANIES);
+		return true;
+	}
+
+	DoCommandP(0, CCA_SALE | index << 16, 0, CMD_COMPANY_CTRL);
+	IConsolePrint(CC_DEFAULT, "Company offered for sale.");
+
+	return true;
+}
+
 DEF_CONSOLE_CMD(ConNetworkClients)
 {
 	if (argc == 0) {
@@ -3447,6 +3471,7 @@ void IConsoleStdLibRegister()
 	IConsole::CmdRegister("move",                    ConMoveClient,       ConHookServerOnly);
 	IConsole::CmdRegister("reset_company",           ConResetCompany,     ConHookServerOnly);
 	IConsole::AliasRegister("clean_company",         "reset_company %A");
+	IConsole::CmdRegister("offer_company_sale",      ConOfferCompanySale, ConHookServerOrNoNetwork);
 	IConsole::CmdRegister("client_name",             ConClientNickChange, ConHookServerOnly);
 	IConsole::CmdRegister("kick",                    ConKick,             ConHookServerOnly);
 	IConsole::CmdRegister("ban",                     ConBan,              ConHookServerOnly);