From 2c16800454ddc76e32a28411f1c2013798043f7e Mon Sep 17 00:00:00 2001
From: Jonathan G Rennison <j.g.rennison@gmail.com>
Date: Sun, 28 Jan 2018 17:26:35 +0000
Subject: [PATCH] Add debug console command to show cargo packet deferred
 payment stats

---
 src/cargopacket.cpp  | 25 +++++++++++++++++++++++++
 src/console_cmds.cpp | 15 +++++++++++++++
 2 files changed, 40 insertions(+)

diff --git a/src/cargopacket.cpp b/src/cargopacket.cpp
index 3b23fd4f58..6e42993ddb 100644
--- a/src/cargopacket.cpp
+++ b/src/cargopacket.cpp
@@ -18,6 +18,8 @@
 #include "order_type.h"
 #include "company_func.h"
 #include "core/backup_type.hpp"
+#include "string_func.h"
+#include "strings_func.h"
 #include "3rdparty/cpp-btree/btree_map.h"
 
 #include "safeguards.h"
@@ -71,6 +73,29 @@ inline void IterateCargoPacketDeferredPayments(CargoPacketID index, bool erase_r
 	}
 }
 
+void DumpCargoPacketDeferredPaymentStats(char *buffer, const char *last)
+{
+	Money payments[256][4] = {};
+	for (auto &it : _cargo_packet_deferred_payments) {
+		payments[GB(it.first, 24, 8)][GB(it.first, 22, 2)] += it.second;
+	}
+	for (uint i = 0; i < 256; i++) {
+		for (uint j = 0; j < 4; j++) {
+			if (payments[i][j] != 0) {
+				SetDParam(0, i);
+				buffer = GetString(buffer, STR_COMPANY_NAME, last);
+				buffer += seprintf(buffer, last, " (");
+				buffer = GetString(buffer, STR_REPLACE_VEHICLE_TRAIN + j, last);
+				buffer += seprintf(buffer, last, "): ");
+				SetDParam(0, payments[i][j]);
+				buffer = GetString(buffer, STR_JUST_CURRENCY_LONG, last);
+				buffer += seprintf(buffer, last, "\n");
+			}
+		}
+	}
+	buffer += seprintf(buffer, last, "Deferred payment count: %u\n", (uint) _cargo_packet_deferred_payments.size());
+}
+
 /**
  * Create a new packet for savegame loading.
  */
diff --git a/src/console_cmds.cpp b/src/console_cmds.cpp
index 3b65224de8..772cafd056 100644
--- a/src/console_cmds.cpp
+++ b/src/console_cmds.cpp
@@ -1882,6 +1882,20 @@ DEF_CONSOLE_CMD(ConNewGRFReload)
 	return true;
 }
 
+DEF_CONSOLE_CMD(ConDumpCpdpStats)
+{
+	if (argc == 0) {
+		IConsoleHelp("Dump cargo packet deferred payment stats.");
+		return true;
+	}
+
+	extern void DumpCargoPacketDeferredPaymentStats(char *buffer, const char *last);
+	char buffer[32768];
+	DumpCargoPacketDeferredPaymentStats(buffer, lastof(buffer));
+	PrintLineByLine(buffer);
+	return true;
+}
+
 #ifdef _DEBUG
 /******************
  *  debug commands
@@ -2025,6 +2039,7 @@ void IConsoleStdLibRegister()
 #ifdef _DEBUG
 	IConsoleDebugLibRegister();
 #endif
+	IConsoleCmdRegister("dump_cpdp_stats", ConDumpCpdpStats);
 
 	/* NewGRF development stuff */
 	IConsoleCmdRegister("reload_newgrfs",  ConNewGRFReload, ConHookNewGRFDeveloperTool);