Fixed up before doing the upgrade to SFML 3.0

Makefile

@@ -0,0 +1,27 @@
+all: build
+
+reset:
+	powershell -executionpolicy bypass .\scripts\reset_build.ps1
+
+build:
+	meson compile -j 4 -C builddir
+
+release_build:
+	meson --wipe builddir -Db_ndebug=true --buildtype release
+	meson compile -j 4 -C builddir
+
+debug_build:
+	meson setup --wipe builddir -Db_ndebug=true --buildtype debugoptimized
+	meson compile -j 4 -C builddir
+
+run: build
+	./builddir/sfmldemo.exe
+
+debug: build
+	gdb --nx -x .gdbinit --ex run --args builddir/runtests.exe
+
+debug_run: build
+	gdb --nx -x .gdbinit --batch --ex run --ex bt --ex q --args builddir/sfmldemo.exe
+
+clean:
+	meson compile --clean -C builddir

dbc.cpp

@@ -0,0 +1,47 @@
+#include "dbc.hpp"
+#include <iostream>
+
+void dbc::log(const string &message, const std::source_location location) {
+  std::cout << '[' << location.file_name() << ':'
+     << location.line() << "|"
+     << location.function_name() << "] "
+     << message << std::endl;
+}
+
+void dbc::sentinel(const string &message, const std::source_location location) {
+  string err = fmt::format("[SENTINEL!] {}", message);
+  dbc::log(err, location);
+  throw dbc::SentinelError{err};
+}
+
+void dbc::pre(const string &message, bool test, const std::source_location location) {
+  if(!test) {
+    string err = fmt::format("[PRE!] {}", message);
+    dbc::log(err, location);
+    throw dbc::PreCondError{err};
+  }
+}
+
+void dbc::pre(const string &message, std::function<bool()> tester, const std::source_location location) {
+  dbc::pre(message, tester(), location);
+}
+
+void dbc::post(const string &message, bool test, const std::source_location location) {
+  if(!test) {
+    string err = fmt::format("[POST!] {}", message);
+    dbc::log(err, location);
+    throw dbc::PostCondError{err};
+  }
+}
+
+void dbc::post(const string &message, std::function<bool()> tester, const std::source_location location) {
+  dbc::post(message, tester(), location);
+}
+
+void dbc::check(bool test, const string &message, const std::source_location location) {
+  if(!test) {
+    string err = fmt::format("[CHECK!] {}\n", message);
+    dbc::log(err, location);
+    throw dbc::CheckError{err};
+  }
+}

dbc.hpp

@@ -0,0 +1,50 @@
+#pragma once
+
+#include <string>
+#include <fmt/core.h>
+#include <functional>
+#include <source_location>
+
+using std::string;
+
+namespace dbc {
+  class Error {
+    public:
+      const string message;
+      Error(string m) : message{m} {}
+      Error(const char *m) : message{m} {}
+  };
+
+  class CheckError : public Error {};
+  class SentinelError : public Error {};
+  class PreCondError : public Error {};
+  class PostCondError : public Error {};
+
+  void log(const string &message,
+      const std::source_location location =
+      std::source_location::current());
+
+  [[noreturn]] void sentinel(const string &message,
+      const std::source_location location =
+      std::source_location::current());
+
+  void pre(const string &message, bool test,
+      const std::source_location location =
+      std::source_location::current());
+
+  void pre(const string &message, std::function<bool()> tester,
+      const std::source_location location =
+      std::source_location::current());
+
+  void post(const string &message, bool test,
+      const std::source_location location =
+      std::source_location::current());
+
+  void post(const string &message, std::function<bool()> tester,
+      const std::source_location location =
+      std::source_location::current());
+
+  void check(bool test, const string &message,
+      const std::source_location location =
+      std::source_location::current());
+}

main.cpp

@@ -1,5 +1,3 @@
-#include "imgui.h"
-#include "imgui-SFML.h"
 #define _USE_MATH_DEFINES
 #include <math.h>
 #include <fmt/core.h>
@@ -10,27 +8,11 @@
 #include <SFML/System.hpp>
 #include <SFML/Audio.hpp>
 #include <SFML/Window/Event.hpp>
-
-void ImGui_setup(sf::RenderWindow &window) {
-  ImGui::SFML::Init(window);
-}
-
-void ImGui_update(sf::RenderWindow &window, sf::Clock &deltaClock, sf::Time &tick) {
-  ImGui::SFML::Update(window, deltaClock.restart());
-  // ImGui::ShowDemoWindow();
-  ImGui::Begin("Clock");
-  sf::Vector2u size = window.getSize();
-  ImGui::SetWindowPos(ImVec2(size.x - 150, 0));
-  ImGui::SetWindowSize(ImVec2(150, 50));
-  std::string msg = fmt::format("Time: {}\n", tick.asSeconds());
-  ImGui::Button(msg.c_str());
-  ImGui::End();
-}
+#include "dbc.hpp"
 
 void Window_update(sf::RenderWindow &window, sf::Sprite &player) {
     window.clear();
     window.draw(player);
-    ImGui::SFML::Render(window);
     window.display();
 }
 
@@ -73,10 +55,7 @@ void Handle_events(sf::RenderWindow &window, BoxTest &box, sf::Sound &click) {
 
   // is this a main event loop
   while (window.pollEvent(event)) {
-    ImGui::SFML::ProcessEvent(window, event);
-
     switch(event.type) {
-
       case sf::Event::Closed:
         fmt::print("Exiting...\n");
         window.close();
@@ -107,6 +86,8 @@ void Handle_events(sf::RenderWindow &window, BoxTest &box, sf::Sound &click) {
           click.play();
         }
         break;
+      default:
+        return; // just here to shutup warnings
     }
   }
 }
@@ -126,7 +107,6 @@ sf::Time Update_entities(sf::RenderWindow &window, b2World &world, sf::Clock &cl
   player.setPosition(position.x * 100.0f, winSize.y - position.y * 100.0f);
   player.setRotation(angle * 180.0f / M_PI);
 
-  ImGui_update(window, deltaClock, tick);
   Window_update(window, player);
 
   return nextTick;
@@ -154,10 +134,9 @@ int main() {
   sf::ContextSettings settings;
   settings.antialiasingLevel = 8;
 
-  sf::RenderWindow window(sf::VideoMode(1920, 1080), "Simple Game Demo", sf::Style::Default, settings);
+  sf::RenderWindow window(sf::VideoMode(1280, 720), "Simple Game Demo", sf::Style::Default, settings);
   window.setFramerateLimit(60);
   window.setVerticalSyncEnabled(true);
-  ImGui_setup(window);
 
   sf::SoundBuffer buffer;
   if(!buffer.loadFromFile("click.mp3")) {
@@ -183,6 +162,4 @@ int main() {
     // preparing for refactoring this into a class or struct for everything
     tick = Update_entities(window, world, clock, deltaClock, tick, box, player);
   }
-
-  ImGui::SFML::Shutdown();
 }

meson.build

@@ -3,12 +3,17 @@ project('sfmldemo', 'cpp',
 
 dependencies = [
   dependency('sfml'),
-  dependency('imgui-sfml'),
-  dependency('fmt'),
+  subproject('fmt').get_variable('fmt_dep'),
   dependency('box2d'),
 ]
 
-executable('sfmldemo', 'main.cpp',
+source = [
+  'dbc.cpp',
+  'main.cpp'
+]
+
+executable('sfmldemo',
+  source,
   win_subsystem: 'windows',
   cpp_args: '-DFMT_HEADER_ONLY',
   dependencies: dependencies)

scripts/reset_build.ps1

@@ -3,5 +3,5 @@ rm -recurse -force .\subprojects\,.\builddir\
 mkdir subprojects
 mv .\packagecache .\subprojects\
 mkdir builddir
-cp wraps\*.wrap subprojects
-meson setup -Ddefault_library=static builddir
+cp wraps\*.wrap subprojects\
+meson setup --default-library=static --prefer-static  builddir

scripts/reset_build.sh

@@ -1,10 +1,10 @@
 #!/usr/bin/env bash
-set -ex
 
-mv ./subprojects/packagecache .
-rm -rf ./subprojects ./builddir
+mv -f ./subprojects/packagecache .
+rm -rf subprojects builddir
 mkdir subprojects
-mv ./packagecache ./subprojects
+mv -f packagecache ./subprojects/ && true
 mkdir builddir
 cp wraps/*.wrap subprojects/
-meson setup builddir
+# on OSX you can't do this with static
+meson setup --default-library=static --prefer-static  builddir