Fix bug in race results (maybe)

derby/derby.go

@@ -186,7 +186,6 @@ func (dc *DerbyClock) readLoop() {
 			if len(buffer) >= 3 && string(buffer[len(buffer)-3:]) == "C\r\n" {
 				dc.mu.Lock()
 				dc.status = StatusRunning
-				dc.results = nil
 				dc.mu.Unlock()
 
 				// Send race start event
@@ -204,14 +203,6 @@ func (dc *DerbyClock) readLoop() {
 				// Try to extract a result from the buffer
 				result := dc.tryExtractResult(buffer)
 				if result != nil {
-					dc.mu.Lock()
-					// Add result to our stored results
-					dc.results = append(dc.results, result)
-
-					// Determine finish place based on how many results we have
-					result.FinishPlace = len(dc.results)
-					dc.mu.Unlock()
-
 					// Send lane finish event
 					dc.eventChan <- Event{
 						Type:   EventLaneFinish,
@@ -282,11 +273,24 @@ func (dc *DerbyClock) tryExtractResult(buffer []byte) *Result {
 						continue
 					}
 
+					finishPlace := 0
+
+					switch finishChar {
+					case "!":
+						finishPlace = 1
+					case "\"":
+						finishPlace = 2
+					case "#":
+						finishPlace = 3
+					case "$":
+						finishPlace = 4
+					}
+
 					// Create and return the result
 					return &Result{
 						Lane:         lane,
 						Time:         timeVal,
-						FinishPlace:  0, // Will be set by the caller
+						FinishPlace:  finishPlace,
 						FinishSymbol: finishChar,
 					}
 				}

examples/main.go

@@ -47,6 +47,7 @@ func main() {
 
 	// Process events from the clock
 	go func() {
+		raceResults := make([]*derby.Result, 0)
 		for event := range clock.Events() {
 			switch event.Type {
 			case derby.EventRaceStart:
@@ -56,14 +57,16 @@ func main() {
 				result := event.Result
 				fmt.Printf("🚗 Lane %d finished in place %d with time %.4f seconds\n",
 					result.Lane, result.FinishPlace, result.Time)
+				raceResults = append(raceResults, result)
 
 			case derby.EventRaceComplete:
 				fmt.Println("\n🏆 Race complete! Final results:")
-				for _, result := range clock.Results() {
+				for _, result := range raceResults {
 					fmt.Printf("Place %d: Lane %d - %.4f seconds\n",
 						result.FinishPlace, result.Lane, result.Time)
 				}
 				fmt.Println("\nEnter command (r/f/q/?):")
+				raceResults = nil
 			}
 		}
 	}()