BGE: Flipping vsync constants so VSYNC_ON is 0.

This will make transitions from older versions of Blender easier since VSYNC_ON
will be the default. This could have been changed in a do_version, but the vsync
code has yet to see an official release, so I figured this would be a bit nicer.
Also, this makes VSYNC_ON the default for new scenes as well.

1 files changed, 2 insertions, 2 deletions

diff --git a/source/gameengine/Ketsji/KX_PythonInit.cpp b/source/gameengine/Ketsji/KX_PythonInit.cpp
index ae9cbbb2656..efda1c5301b 100644
--- a/source/gameengine/Ketsji/KX_PythonInit.cpp
+++ b/source/gameengine/Ketsji/KX_PythonInit.cpp
@@ -1378,14 +1378,14 @@ static PyObject *gPySetVsync(PyObject *, PyObject *args)
 	if (!PyArg_ParseTuple(args, "i:setVsync", &interval))
 		return NULL;
 
-	if (interval < VSYNC_OFF || interval > VSYNC_ADAPTIVE) {
+	if (interval < 0 || interval > VSYNC_ADAPTIVE) {
 		PyErr_SetString(PyExc_ValueError, "Rasterizer.setVsync(value): value must be VSYNC_OFF, VSYNC_ON, or VSYNC_ADAPTIVE");
 		return NULL;
 	}
 
 	if (interval == VSYNC_ADAPTIVE)
 		interval = -1;
-	gp_Canvas->SetSwapInterval(interval);
+	gp_Canvas->SetSwapInterval(!interval); // VSYNC_OFF == 1, VSYNC_ON == 0, so this works
 	Py_RETURN_NONE;
 }