From 36f75f89a03c41842a7ffd5e84aeabae8f801c9e Mon Sep 17 00:00:00 2001
From: ZehMatt <m.moninger.h@gmail.com>
Date: Fri, 19 Jan 2018 08:26:28 +0100
Subject: [PATCH] Add "simulate" command.

---
 src/openrct2/cmdline/CommandLine.hpp      |  1 +
 src/openrct2/cmdline/RootCommands.cpp     |  2 +-
 src/openrct2/cmdline/SimulateCommands.cpp | 75 +++++++++++++++++++++++
 3 files changed, 77 insertions(+), 1 deletion(-)
 create mode 100644 src/openrct2/cmdline/SimulateCommands.cpp

diff --git a/src/openrct2/cmdline/CommandLine.hpp b/src/openrct2/cmdline/CommandLine.hpp
index 322565678d..6d7797086e 100644
--- a/src/openrct2/cmdline/CommandLine.hpp
+++ b/src/openrct2/cmdline/CommandLine.hpp
@@ -117,6 +117,7 @@ namespace CommandLine
     extern const CommandLineCommand ScreenshotCommands[];
     extern const CommandLineCommand SpriteCommands[];
     extern const CommandLineCommand BenchGfxCommands[];
+    extern const CommandLineCommand SimulateCommands[];
 
     extern const CommandLineExample RootExamples[];
 
diff --git a/src/openrct2/cmdline/RootCommands.cpp b/src/openrct2/cmdline/RootCommands.cpp
index 29d509b5fa..5b866ef2c8 100644
--- a/src/openrct2/cmdline/RootCommands.cpp
+++ b/src/openrct2/cmdline/RootCommands.cpp
@@ -138,7 +138,7 @@ const CommandLineCommand CommandLine::RootCommands[]
     DefineSubCommand("screenshot", CommandLine::ScreenshotCommands),
     DefineSubCommand("sprite",     CommandLine::SpriteCommands    ),
     DefineSubCommand("benchgfx",   CommandLine::BenchGfxCommands  ),
-
+    DefineSubCommand("simulate",   CommandLine::SimulateCommands  ),
     CommandTableEnd
 };
 
diff --git a/src/openrct2/cmdline/SimulateCommands.cpp b/src/openrct2/cmdline/SimulateCommands.cpp
new file mode 100644
index 0000000000..55eacedd3f
--- /dev/null
+++ b/src/openrct2/cmdline/SimulateCommands.cpp
@@ -0,0 +1,75 @@
+/*****************************************************************************
+ * Copyright (c) 2014-2018 OpenRCT2 developers
+ *
+ * For a complete list of all authors, please refer to contributors.md
+ * Interested in contributing? Visit https://github.com/OpenRCT2/OpenRCT2
+ *
+ * OpenRCT2 is licensed under the GNU General Public License version 3.
+ *****************************************************************************/
+
+#include "../Context.h"
+#include "../Game.h"
+#include "../GameState.h"
+#include "../OpenRCT2.h"
+#include "../core/Console.hpp"
+#include "../network/network.h"
+#include "../platform/platform.h"
+#include "../world/Sprite.h"
+#include "CommandLine.hpp"
+
+#include <cstdlib>
+#include <memory>
+
+using namespace OpenRCT2;
+
+static exitcode_t HandleSimulate(CommandLineArgEnumerator* argEnumerator);
+
+const CommandLineCommand CommandLine::SimulateCommands[]{ // Main commands
+                                                          DefineCommand("", "<ticks>", nullptr, HandleSimulate), CommandTableEnd
+};
+
+static exitcode_t HandleSimulate(CommandLineArgEnumerator* argEnumerator)
+{
+    const char** argv = (const char**)argEnumerator->GetArguments() + argEnumerator->GetIndex();
+    int32_t argc = argEnumerator->GetCount() - argEnumerator->GetIndex();
+
+    if (argc < 2)
+    {
+        Console::Error::WriteLine("Missing arguments <sv6-file> <ticks>.");
+        return EXITCODE_FAIL;
+    }
+
+    core_init();
+
+    const char* inputPath = argv[0];
+    uint32_t ticks = atol(argv[1]);
+
+    gOpenRCT2Headless = true;
+
+#ifndef DISABLE_NETWORK
+    gNetworkStart = NETWORK_MODE_SERVER;
+#endif
+
+    std::unique_ptr<IContext> context(CreateContext());
+    if (context->Initialise())
+    {
+        if (!context->LoadParkFromFile(inputPath))
+        {
+            return EXITCODE_FAIL;
+        }
+
+        Console::WriteLine("Running %d ticks...", ticks);
+        for (uint32_t i = 0; i < ticks; i++)
+        {
+            context->GetGameState()->UpdateLogic();
+        }
+        Console::WriteLine("Completed: %s", sprite_checksum());
+    }
+    else
+    {
+        Console::Error::WriteLine("Context initialization failed.");
+        return EXITCODE_FAIL;
+    }
+
+    return EXITCODE_OK;
+}