cleanly close spectator if server dies

botspectate/main.go

@@ -47,7 +47,7 @@ func main() {
 
 	go func() {
 		if err := c.Play(); err != nil {
-			log.Fatal(err)
+			close(spectator.Die)
 		}
 	}()
 

spectator.go

@@ -22,6 +22,7 @@ type SimpleSpectator struct {
 	width, height float64
 	viewX, viewY  int
 	update        chan *server.Boardstate
+	Die           chan struct{}
 }
 
 // NewSimpleSpectator simply returns a populated, usable *SimplePlayer
@@ -30,6 +31,7 @@ func NewSimpleSpectator(width, height float64) *SimpleSpectator {
 		width:  width,
 		height: height,
 		update: make(chan *server.Boardstate),
+		Die:    make(chan struct{}),
 	}
 }
 
@@ -119,7 +121,7 @@ func (s *SimpleSpectator) Run() {
 						}
 					}
 					c := termbox.ColorWhite
-					if bot.Health < 0 {
+					if bot.Health <= 0 {
 						c = termbox.ColorBlack
 					}
 					termbox.SetCell(
@@ -169,6 +171,8 @@ func (s *SimpleSpectator) Run() {
 				if err != nil {
 					log.Fatal(err)
 				}
+			case <-s.Die:
+				return
 			}
 		}
 	}()