add '--script', '--version' command line arguments

src/ServerMainloop.cpp

@@ -1,4 +1,4 @@
-#include "TestMainloop.hpp"
+#include "ServerMainloop.hpp"
 
 #include "logic/scripting/scripting.hpp"
 #include "logic/LevelController.hpp"
@@ -6,22 +6,27 @@
 #include "debug/Logger.hpp"
 #include "world/Level.hpp"
 #include "world/World.hpp"
+#include "util/platform.hpp"
 #include "engine.hpp"
 
+#include <chrono>
+
+using namespace std::chrono;
+
 static debug::Logger logger("mainloop");
 
 inline constexpr int TPS = 20;
 
-TestMainloop::TestMainloop(Engine& engine) : engine(engine) {
+ServerMainloop::ServerMainloop(Engine& engine) : engine(engine) {
 }
 
-TestMainloop::~TestMainloop() = default;
+ServerMainloop::~ServerMainloop() = default;
 
-void TestMainloop::run() {
+void ServerMainloop::run() {
     const auto& coreParams = engine.getCoreParameters();
     auto& time = engine.getTime();
 
-    if (coreParams.testFile.empty()) {
+    if (coreParams.scriptFile.empty()) {
         logger.info() << "nothing to do";
         return;
     }
@@ -29,21 +34,34 @@ void TestMainloop::run() {
         setLevel(std::move(level));
     });
 
-    logger.info() << "starting test " << coreParams.testFile;
+    logger.info() << "starting test " << coreParams.scriptFile;
-    auto process = scripting::start_coroutine(coreParams.testFile);
+    auto process = scripting::start_coroutine(coreParams.scriptFile);
+
+    double targetDelta = 1.0f / static_cast<float>(TPS);
+    double delta = targetDelta;
+    auto begin = steady_clock::now();
     while (process->isActive()) {
-        time.step(1.0f / static_cast<float>(TPS));
+        time.step(delta);
         process->update();
         if (controller) {
             float delta = time.getDelta();
             controller->getLevel()->getWorld()->updateTimers(delta);
             controller->update(glm::min(delta, 0.2f), false);
         }
+
+        if (!coreParams.testMode) {
+            auto end = steady_clock::now();
+            platform::sleep(targetDelta * 1000 - 
+                duration_cast<microseconds>(end - begin).count() / 1000);
+            end = steady_clock::now();
+            delta = duration_cast<microseconds>(end - begin).count() / 1e6;
+            begin = end;
+        }
     }
     logger.info() << "test finished";
 }
 
-void TestMainloop::setLevel(std::unique_ptr<Level> level) {
+void ServerMainloop::setLevel(std::unique_ptr<Level> level) {
     if (level == nullptr) {
         controller->onWorldQuit();
         engine.getPaths()->setCurrentWorldFolder(fs::path());

src/ServerMainloop.hpp

@@ -6,12 +6,12 @@ class Level;
 class LevelController;
 class Engine;
 
-class TestMainloop {
+class ServerMainloop {
     Engine& engine;
     std::unique_ptr<LevelController> controller;
 public:
-    TestMainloop(Engine& engine);
+    ServerMainloop(Engine& engine);
-    ~TestMainloop();
+    ~ServerMainloop();
 
     void run();
 

src/engine.cpp

@@ -36,7 +36,7 @@
 #include "window/Window.hpp"
 #include "world/Level.hpp"
 #include "Mainloop.hpp"
-#include "TestMainloop.hpp"
+#include "ServerMainloop.hpp"
 
 #include <iostream>
 #include <assert.h>
@@ -173,7 +173,7 @@ void Engine::saveScreenshot() {
 
 void Engine::run() {
     if (params.headless) {
-        TestMainloop(*this).run();
+        ServerMainloop(*this).run();
     } else {
         Mainloop(*this).run();
     }

src/engine.hpp

@@ -48,9 +48,10 @@ public:
 
 struct CoreParameters {
     bool headless = false;
+    bool testMode = false;
     std::filesystem::path resFolder {"res"};
     std::filesystem::path userFolder {"."};
-    std::filesystem::path testFile;
+    std::filesystem::path scriptFile;
 };
 
 class Engine : public util::ObjectsKeeper {

src/logic/scripting/lua/lua_engine.cpp

@@ -121,7 +121,7 @@ void lua::initialize(const EnginePaths& paths, const CoreParameters& params) {
     main_thread = create_state(
         paths, params.headless ? StateType::TEST : StateType::BASE
     );
-    lua::pushstring(main_thread, params.testFile.stem().u8string());
+    lua::pushstring(main_thread, params.scriptFile.stem().u8string());
     lua::setglobal(main_thread, "__VC_TEST_NAME");
 }
 

src/util/command_line.cpp

@@ -19,19 +19,30 @@ static bool perform_keyword(
         auto token = reader.next();
         params.userFolder = fs::u8path(token);
     } else if (keyword == "--help" || keyword == "-h") {
-        std::cout << "VoxelEngine command-line arguments:\n";
+        std::cout << "VoxelCore v" << ENGINE_VERSION_STRING << "\n\n";
+        std::cout << "command-line arguments:\n";
         std::cout << " --help - show help\n";
+        std::cout << " --version - print engine version\n";
         std::cout << " --res <path> - set resources directory\n";
         std::cout << " --dir <path> - set userfiles directory\n";
         std::cout << " --headless - run in headless mode\n";
         std::cout << " --test <path> - test script file\n";
+        std::cout << " --script <path> - main script file\n";
         std::cout << std::endl;
         return false;
+    } else if (keyword == "--version") {
+        std::cout << ENGINE_VERSION_STRING << std::endl;
+        return false;
     } else if (keyword == "--headless") {
         params.headless = true;
     } else if (keyword == "--test") {
         auto token = reader.next();
-        params.testFile = fs::u8path(token);
+        params.testMode = true;
+        params.scriptFile = fs::u8path(token);
+    } else if (keyword == "--script") {
+        auto token = reader.next();
+        params.testMode = false;
+        params.scriptFile = fs::u8path(token);
     } else {
         throw std::runtime_error("unknown argument " + keyword);
     }

src/world/Level.hpp

@@ -27,7 +27,6 @@ public:
     
     std::unique_ptr<GlobalChunks> chunks;
     std::unique_ptr<Inventories> inventories;
-
     std::unique_ptr<PhysicsSolver> physics;
     std::unique_ptr<LevelEvents> events;
     std::unique_ptr<Entities> entities;