added force_exit for emscripten

Author: nesbox

cmake/sokol.cmake

@@ -96,7 +96,7 @@ if(BUILD_SOKOL)
     elseif(EMSCRIPTEN)
         add_executable(tic80 ${TIC80_SRC})
 
-        set(LINK_FLAGS "-s EXPORT_ES6=1 -s ALLOW_MEMORY_GROWTH=1 -s FETCH=1 -s DEFAULT_LIBRARY_FUNCS_TO_INCLUDE=['$dynCall','$writeArrayToMemory'] -s EXPORTED_RUNTIME_METHODS=['FS'] -s EXPORTED_FUNCTIONS=['_main','_free']")
+        set(LINK_FLAGS "-s EXPORT_ES6=1 -s ALLOW_MEMORY_GROWTH=1 -s FETCH=1 -s DEFAULT_LIBRARY_FUNCS_TO_INCLUDE=['$dynCall','$writeArrayToMemory'] -s EXPORTED_RUNTIME_METHODS=['FS'] -s EXPORTED_FUNCTIONS=['_main','_free','_force_exit']")
 
         if(BUILD_SOKOL_WEBGPU)
             set_target_properties(tic80 PROPERTIES LINK_FLAGS "${LINK_FLAGS} --use-port=emdawnwebgpu")

src/studio/studio.c

@@ -2773,9 +2773,23 @@ void studio_keymapchanged(Studio* studio, tic_kbdlayout kbdlayout)
     studio->config->data.options.kbdlayout = kbdlayout;
 }
 
+#if defined(__TIC_EMSCRIPTEN__)
+static bool forceExitFlag = false;
+
+void force_exit()
+{
+    forceExitFlag = true;
+}
+
+#endif
+
 bool studio_alive(Studio* studio)
 {
-    return !studio->quit;
+    return !studio->quit
+#if defined(__TIC_EMSCRIPTEN__)
+        && !forceExitFlag
+#endif
+    ;
 }
 
 #if defined(TIC_MODULE_EXT)