From e3b7978afe8f8968242919e6e93c9a637233801a Mon Sep 17 00:00:00 2001
From: Javier Sancho <jsf@jsancho.org>
Date: Sat, 21 Mar 2020 20:18:58 +0100
Subject: [PATCH 1/1] is-window-active? yield

---
 src/device.cpp | 20 +++++++++++++++++++-
 src/device.h   |  6 ++++++
 2 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/src/device.cpp b/src/device.cpp
index 3b5b9b9..41d6193 100644
--- a/src/device.cpp
+++ b/src/device.cpp
@@ -35,9 +35,12 @@ extern "C" {
   {
     init_device_type ();
     scm_c_define_gsubr ("create-device", 0, 0, 1, (scm_t_subr)irr_createDevice);
+    scm_c_define_gsubr ("is-window-active?", 1, 0, 0, (scm_t_subr)irr_isWindowActive);
     scm_c_define_gsubr ("run", 1, 0, 0, (scm_t_subr)irr_run);
     scm_c_define_gsubr ("set-window-caption!", 2, 0, 0, (scm_t_subr)irr_setWindowCaption);
-    scm_c_export ("create-device", "run", "set-window-caption!", NULL);
+    scm_c_define_gsubr ("yield", 1, 0, 0, (scm_t_subr)irr_yield);
+    scm_c_export ("create-device", "is-window-active?", "run",
+                  "set-window-caption!", "yield", NULL);
   }
 
   DEFINE_WRAPPED_TYPE (irr::IrrlichtDevice*, "device",
@@ -76,6 +79,13 @@ extern "C" {
     return wrap_device (device);
   }
 
+  SCM
+  irr_isWindowActive (SCM wrapped_device)
+  {
+    irr::IrrlichtDevice* device = unwrap_device (wrapped_device);
+    return scm_from_bool (device->isWindowActive ());
+  }
+
   SCM
   irr_run (SCM wrapped_device)
   {
@@ -92,4 +102,12 @@ extern "C" {
     return SCM_UNSPECIFIED;
   }
 
+  SCM
+  irr_yield (SCM wrapped_device)
+  {
+    irr::IrrlichtDevice* device = unwrap_device (wrapped_device);
+    device->yield ();
+    return SCM_UNSPECIFIED;
+  }
+
 }
diff --git a/src/device.h b/src/device.h
index 31195c6..ec5875a 100644
--- a/src/device.h
+++ b/src/device.h
@@ -37,6 +37,9 @@ extern "C" {
   SCM
   irr_createDevice (SCM rest);
 
+  SCM
+  irr_isWindowActive (SCM wrapped_device);
+
   SCM
   irr_run (SCM wrapped_device);
 
@@ -44,6 +47,9 @@ extern "C" {
   irr_setWindowCaption (SCM wrapped_device,
                         SCM text);
 
+  SCM
+  irr_yield (SCM wrapped_device);
+
 }
 
 #endif
-- 
2.39.5