From db41186ef83fe5def23e3eacfbcea9248adf700e Mon Sep 17 00:00:00 2001
From: Javier Sancho <jsf@jsancho.org>
Date: Sat, 11 Apr 2020 13:08:38 +0200
Subject: [PATCH] set-animation-speed!

---
 src/animated-mesh.cpp | 27 +++++++++++++++++++++++++++
 src/animated-mesh.h   |  5 +++++
 2 files changed, 32 insertions(+)

diff --git a/src/animated-mesh.cpp b/src/animated-mesh.cpp
index 9f461a2..327deb0 100644
--- a/src/animated-mesh.cpp
+++ b/src/animated-mesh.cpp
@@ -21,7 +21,10 @@
 
 #include <irrlicht/irrlicht.h>
 #include <libguile.h>
+
 #include "animated-mesh.h"
+#include "animated-mesh-scene-node.h"
+#include "gsubr.h"
 #include "wrapped.h"
 
 extern "C" {
@@ -30,10 +33,34 @@ extern "C" {
   init_animated_mesh (void)
   {
     init_animated_mesh_type ();
+    DEFINE_GSUBR ("set-animation-speed!", 2, 0, 0, irr_scene_setAnimationSpeed);
   }
 
   DEFINE_WRAPPED_TYPE (irr::scene::IAnimatedMesh*, "animated-mesh",
                        init_animated_mesh_type, animated_mesh_p,
                        wrap_animated_mesh, unwrap_animated_mesh);
 
+  SCM
+  irr_scene_setAnimationSpeed (SCM wrapped_obj,
+                               SCM frames_per_second)
+  {
+#define SET_ANIMATION_SPEED(OBJ) OBJ->setAnimationSpeed (scm_to_double (frames_per_second));
+
+    if (animated_mesh_p (wrapped_obj))
+      {
+        SET_ANIMATION_SPEED (unwrap_animated_mesh (wrapped_obj));
+      }
+    else if (animated_mesh_scene_node_p (wrapped_obj))
+      {
+        SET_ANIMATION_SPEED (unwrap_animated_mesh_scene_node (wrapped_obj));
+      }
+    else
+      {
+        scm_error (scm_arg_type_key, NULL, "Cannot set animation speed to object: ~S",
+                   scm_list_1 (wrapped_obj), scm_list_1 (wrapped_obj));
+      }
+
+    return SCM_UNSPECIFIED;
+  }
+
 }
diff --git a/src/animated-mesh.h b/src/animated-mesh.h
index f063b39..4798c31 100644
--- a/src/animated-mesh.h
+++ b/src/animated-mesh.h
@@ -33,6 +33,11 @@ extern "C" {
 
   DECLARE_WRAPPED_TYPE (irr::scene::IAnimatedMesh*, init_animated_mesh_type,
                         animated_mesh_p, wrap_animated_mesh, unwrap_animated_mesh);
+
+  SCM
+  irr_scene_setAnimationSpeed (SCM wrapped_obj,
+                               SCM frames_per_second);
+
 }
 
 #endif
-- 
2.39.2