QWMatrix is now QMatrix

t14/cannon.cpp

@@ -258,9 +258,9 @@ QRect CannonField::barrierRect() const
 
 bool CannonField::barrelHit( const QPoint &p ) const
 {
-    QWMatrix mtx;
+    QMatrix mtx;
     mtx.translate( 0, height() - 1 );
     mtx.rotate( -ang );
-    mtx = mtx.invert();
+    mtx = mtx.inverted();
     return barrel_rect.contains( mtx.map(p) );
 }