adjusting some function names

deleting doorbell image after countdown

animation.go

@@ -80,10 +80,10 @@ func NewAnimation(sz image.Point, mqMessages chan mqtt.Message) *Animation {
 	}
 }
 
-func appendImage(img string, a *Animation) {
+func loadImage(imgType string, img string, a *Animation) {
 	baseImage, _ := b64.StdEncoding.DecodeString(img)
 	bigImage, _, _ := image.Decode(bytes.NewReader(baseImage))
-	a.images["doorbell"] = imaging.Resize(bigImage, 64, 64, imaging.Lanczos)
+	a.images[imgType] = imaging.Resize(bigImage, 64, 64, imaging.Lanczos)
 }
 
 // what happens each frame, at an interval of 50 milliseconds
@@ -99,7 +99,7 @@ func (a *Animation) Next() (image.Image, <-chan time.Time, error) {
 			a.countDown -= 50
 		} else {
 			//a.image = a.image[:len(a.image)-1]
-			//delete(a.images, "doorbell")
+			delete(a.images, "doorbell")
 			a.countDown = 5000
 		}
 	}
@@ -109,7 +109,7 @@ func (a *Animation) Next() (image.Image, <-chan time.Time, error) {
 		json.Unmarshal([]byte(string(msg.Payload())), &incoming)
 		fmt.Println(incoming.Type)
 		if incoming.Type == "doorbell" {
-			go appendImage(incoming.Image, a)
+			go loadImage(incoming.Type, incoming.Image, a)
 		} else {
 			a.ctx.DrawString(a.msg, 5, 9)
 		}