diff options
| -rw-r--r-- | engines/sword25/input/inputengine.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/engines/sword25/input/inputengine.cpp b/engines/sword25/input/inputengine.cpp index a85096bc2f..0226458f5f 100644 --- a/engines/sword25/input/inputengine.cpp +++ b/engines/sword25/input/inputengine.cpp @@ -87,7 +87,14 @@ bool InputEngine::init() { void InputEngine::update() { Common::Event event; + + // We keep two sets of keyboard states: The current one, and that of + // the previous frame. This allows us to detect which keys changed + // state. Also, by keeping a single central keystate array, we + // ensure that all script queries for key state during a single + // frame get the same consistent replies. _currentState ^= 1; + memcpy(_keyboardState[_currentState], _keyboardState[_currentState ^ 1], sizeof(_keyboardState[0])); // Loop through processing any pending events bool handleEvents = true; |