2 files changed, 40 insertions, 2 deletions

diff --git a/src/play.c b/src/play.c
index c15a26f..5c51cbf 100644
--- a/src/play.c
+++ b/src/play.c
@@ -39,6 +39,7 @@ typedef struct play_t {
 	unsigned		ticks_paused:1;
 	unsigned		update_needed:1;
 	unsigned		has_audio:1;
+	unsigned		pointer_owned:1;
 	const play_ops_t	**ops;
 	int			n_ops;
 	int			context;
@@ -196,7 +197,7 @@ void play_context_enter(play_t *play, int context)
 /* return context pointer of specified context,
  * a negative context requests the current context.
  */
-void * play_context(play_t *play, int context)
+void * play_context(const play_t *play, int context)
 {
 	assert(play);
 
@@ -285,6 +286,40 @@ int play_ticks_elapsed(play_t *play, play_ticks_t timer, unsigned duration)
 }
 
 
+void play_pointer_own(play_t *play)
+{
+	assert(play);
+
+	if (play->pointer_owned)
+		return;
+
+	SDL_SetRelativeMouseMode(SDL_TRUE);
+
+	play->pointer_owned = 1;
+}
+
+
+void play_pointer_disown(play_t *play)
+{
+	assert(play);
+
+	if (!play->pointer_owned)
+		return;
+
+	SDL_SetRelativeMouseMode(SDL_FALSE);
+
+	play->pointer_owned = 0;
+}
+
+
+int play_pointer_owned(const play_t *play)
+{
+	assert(play);
+
+	return !!play->pointer_owned;
+}
+
+
 void play_quit(play_t *play)
 {
 	SDL_Event	ev = { .type = SDL_QUIT };
diff --git a/src/play.h b/src/play.h
index 98581c8..1d4ec6b 100644
--- a/src/play.h
+++ b/src/play.h
@@ -63,11 +63,14 @@ void play_music_set(play_t *play, unsigned flags, const char *fmt, ...);
 void play_music_pause(play_t *play);
 void play_music_resume(play_t *play);
 void play_context_enter(play_t *play, int context);
-void * play_context(play_t *play, int context);
+void * play_context(const play_t *play, int context);
 unsigned play_ticks(play_t *play, play_ticks_t timer);
 unsigned play_ticks_reset(play_t *play, play_ticks_t timer);
 void play_ticks_pause(play_t *play);
 int play_ticks_elapsed(play_t *play, play_ticks_t timer, unsigned duration);
+void play_pointer_own(play_t *play);
+void play_pointer_disown(play_t *play);
+int play_pointer_owned(const play_t *play);
 void play_quit(play_t *play);
 
 #endif