[feature] Show the last 5 commands in referee client

Author: g3force

cmd/ssl-ref-client/main.go

@@ -7,6 +7,7 @@ import (
 	"github.com/RoboCup-SSL/ssl-game-controller/pkg/refproto"
 	"github.com/golang/protobuf/proto"
 	"log"
+	"math"
 	"net"
 	"time"
 )
@@ -16,6 +17,8 @@ const maxDatagramSize = 8192
 var refereeAddress = flag.String("address", "224.5.23.1:10003", "The multicast address of ssl-game-controller, default: 224.5.23.1:10003")
 var fullScreen = flag.Bool("fullScreen", false, "Print the formatted message to the console, clearing the screen during print")
 
+var history []refproto.Referee_Command
+
 func main() {
 	flag.Parse()
 
@@ -49,10 +52,26 @@ func main() {
 			log.Println("Could not unmarshal referee message")
 			continue
 		}
+		if len(history) == 0 || *refMsg.Command != history[len(history)-1] {
+			history = append(history, *refMsg.Command)
+		}
 
 		if *fullScreen {
 			// clear screen, move cursor to upper left corner
 			fmt.Print("\033[H\033[2J")
+
+			// print last commands
+			fmt.Print("Last commands: ")
+			n := int(math.Min(float64(len(history)), 5.0))
+			for i := 0; i < n; i++ {
+				fmt.Print(history[len(history)-1-i])
+				if i != n-1 {
+					fmt.Print(",")
+				}
+			}
+			fmt.Println()
+			fmt.Println()
+
 			// print message formatted with line breaks
 			fmt.Print(proto.MarshalTextString(&refMsg))
 		} else {