From f0a98cc4bd0a4cb23b7841fcaee247c519c911b1 Mon Sep 17 00:00:00 2001
From: adepierre <24371370+adepierre@users.noreply.github.com>
Date: Wed, 9 Oct 2024 12:38:37 +0200
Subject: [PATCH] Add a 60 FPS max limit (fix #14)

---
 ficsit-companion/src/main.cpp | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/ficsit-companion/src/main.cpp b/ficsit-companion/src/main.cpp
index 59f64d3..90637a2 100644
--- a/ficsit-companion/src/main.cpp
+++ b/ficsit-companion/src/main.cpp
@@ -1,3 +1,8 @@
+#include <chrono>
+#if !defined(__EMSCRIPTEN__)
+#include <thread>
+#endif
+
 #include <imgui.h>
 #include <backends/imgui_impl_sdl2.h>
 #include <backends/imgui_impl_opengl3.h>
@@ -107,6 +112,9 @@ bool Render(SDL_Window* window, App* app)
         }
     }
 
+    const std::chrono::steady_clock::time_point start = std::chrono::steady_clock::now();
+    const std::chrono::steady_clock::time_point end = start + std::chrono::milliseconds(16);
+
     // Init imgui frame
     ImGui_ImplOpenGL3_NewFrame();
     ImGui_ImplSDL2_NewFrame();
@@ -137,6 +145,15 @@ bool Render(SDL_Window* window, App* app)
     ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
     SDL_GL_SwapWindow(window);
 
+#if !defined(__EMSCRIPTEN__)
+    std::this_thread::sleep_until(end);
+#else
+    while (std::chrono::steady_clock::now() < end)
+    {
+        emscripten_sleep(1);
+    }
+#endif
+
     return true;
 }