retry on error

src/main.c

@@ -117,12 +117,13 @@ GLuint initOverlayTexture() {
 	return textureid;
 }
 
-void attach() {
+bool attach() {
 	TrackedDeviceIndex_t index;
 	index = oSystem->GetTrackedDeviceIndexForControllerRole( ETrackedControllerRole_TrackedControllerRole_LeftHand );
 
 	if( index == k_unTrackedDeviceIndexInvalid || index == k_unTrackedDeviceIndex_Hmd ) {
 		printf( "Couldn't find your controller to attach our overlay to (%d)\n", index );
+		return false;
 	} else {
 		// We have a ETrackedControllerRole_TrackedControllerRole_LeftHand.  Associate it.
 		EVROverlayError err;
@@ -146,22 +147,30 @@ void attach() {
 		// Notify the terminal that this was associated.
 		printf( "Successfully associated your clock to the tracked device (%d %d %08x).\n",
 				err, index, overlayID );
+		return true;
 	}
 }
 
 int main() {
-	if(initVR()) return 1;
-
 	CNFGSetup( "CHAC", -WIDTH, -HEIGHT );
 
+	while(initVR()) {
+		OGUSleep( (int)( 1000000 ) );
+	}
+
 	oOverlay->ShowOverlay( overlayID );
 	GLuint texture = initOverlayTexture();
 
-	//associate with controller
+	bool isAttached = false;
-	attach();
 	
 	CNFGBGColor = 0x00000000; //Background
 	while(1) {
+		if(!isAttached) {
+			isAttached = attach();
+			OGUSleep( (int)( 1000000 ) ); //wait one sec
+			continue;
+		}
+
 		CNFGClearFrame();
 
 		//Change color to white.