api/joy: prevent idempotent keypressed passed to receiver

1 files changed, 3 insertions, 1 deletions

diff --git a/opentrack/win32-joystick.cpp b/opentrack/win32-joystick.cpp
index f4bfba76..73e27f80 100644
--- a/opentrack/win32-joystick.cpp
+++ b/opentrack/win32-joystick.cpp
@@ -169,7 +169,7 @@ bool win32_joy_ctx::joy::poll(fn f)
     
     for (int i = 0; i < 128; i++)
     {
-        const bool state = !!(js.rgbButtons[i] & 0x80);
+        const bool state = !!(js.rgbButtons[i] & 0x80) && js.rgbButtons[i] != js_old.rgbButtons[i];
         if (state != pressed[i])
         {
             f(guid, i, state);
@@ -178,6 +178,8 @@ bool win32_joy_ctx::joy::poll(fn f)
         pressed[i] = state;
     }
     
+    js_old = js;
+    
     return true;
 }