From 3d7a2f7cbc69bcfb5b04d343cb15c3027721b2e7 Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Sun, 16 Jun 2024 12:28:42 +0100
Subject: Integrate ImGUI main calls

---
 ui/mainApplication.cpp |  7 +++++++
 ui/window.cpp          | 11 +++++++++++
 2 files changed, 18 insertions(+)

diff --git a/ui/mainApplication.cpp b/ui/mainApplication.cpp
index 08f49a4..d843ef1 100644
--- a/ui/mainApplication.cpp
+++ b/ui/mainApplication.cpp
@@ -1,6 +1,10 @@
 #include "mainApplication.h"
 #include "game/gamestate.h"
 #include "game/worldobject.h"
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wold-style-cast"
+#include "backends/imgui_impl_sdl2.h"
+#pragma GCC diagnostic pop
 
 void
 MainApplication::mainLoop()
@@ -16,6 +20,8 @@ MainApplication::mainLoop()
 		}
 		windows.apply(&Window::tick, t_passed);
 		windows.apply(&Window::refresh);
+		ImGui::UpdatePlatformWindows();
+		ImGui::RenderPlatformWindowsDefault();
 
 		t_start = t_end;
 	}
@@ -29,6 +35,7 @@ MainApplication::processInputs()
 			isRunning = false;
 			return;
 		}
+		ImGui_ImplSDL2_ProcessEvent(&e);
 		windows.applyOne(&Window::handleInput, e);
 	}
 }
diff --git a/ui/window.cpp b/ui/window.cpp
index 8ceaf49..732e9ef 100644
--- a/ui/window.cpp
+++ b/ui/window.cpp
@@ -1,6 +1,11 @@
 #include "window.h"
 #include <glad/gl.h>
 #include <glm/glm.hpp>
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wold-style-cast"
+#include "backends/imgui_impl_opengl3.h"
+#include "backends/imgui_impl_sdl2.h"
+#pragma GCC diagnostic pop
 
 Window::Window(size_t width, size_t height, const std::string & title, Uint32 flags) :
 	size {static_cast<int>(width), static_cast<int>(height)},
@@ -48,9 +53,15 @@ Window::refresh() const
 	SDL_GL_MakeCurrent(m_window, glContext);
 	clear(0.0F, 0.0F, 0.0F, 1.0F);
 
+	ImGui_ImplOpenGL3_NewFrame();
+	ImGui_ImplSDL2_NewFrame();
+	ImGui::NewFrame();
 	if (content) {
 		content->render();
+		// Render UI stuff here
 	}
+	ImGui::Render();
+	ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
 
 	swapBuffers();
 }
-- 
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