diff options
| -rw-r--r-- | engines/zvision/render_manager.cpp | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/engines/zvision/render_manager.cpp b/engines/zvision/render_manager.cpp index a2ae7e8b28..31b54b4a15 100644 --- a/engines/zvision/render_manager.cpp +++ b/engines/zvision/render_manager.cpp @@ -60,22 +60,21 @@ RenderManager::~RenderManager() { void RenderManager::update(uint deltaTimeInMillis) { // An inverse velocity of 0 would be infinitely fast, so we'll let 0 mean no velocity. - if (_backgroundInverseVelocity == 0) - return; + if (_backgroundInverseVelocity != 0) { + _accumulatedVelocityMilliseconds += deltaTimeInMillis; - _accumulatedVelocityMilliseconds += deltaTimeInMillis; + int absVelocity = abs(_backgroundInverseVelocity); - int absVelocity = abs(_backgroundInverseVelocity); + int numberOfSteps = 0; + while (_accumulatedVelocityMilliseconds >= absVelocity) { + _accumulatedVelocityMilliseconds -= absVelocity; + numberOfSteps++; + } - int numberOfSteps = 0; - while (_accumulatedVelocityMilliseconds >= absVelocity) { - _accumulatedVelocityMilliseconds -= absVelocity; - numberOfSteps++; + // Choose the direction of movement using the sign of the velocity + moveBackground(_backgroundInverseVelocity < 0 ? -numberOfSteps : numberOfSteps); } - // Choose the direction of movement using the sign of the velocity - moveBackground(_backgroundInverseVelocity < 0 ? -numberOfSteps : numberOfSteps); - // Warp the entire backbuffer _renderTable.mutateImage((uint16 *)_backbuffer.getBasePtr(0, 0), _warpedBackbuffer, _workingWidth, _workingHeight); |