added probe result type

robot.go

@@ -28,10 +28,15 @@ type Robot struct {
 	Collision      bool         `json:"collision"`
 	Hit            bool         `json:"hit"`
 	Probe          *v.Point2d   `json:"probe"`
-	ProbeResult    *v.Point2d  `json:"probe_result"`
+	ProbeResult    *ProbeResult `json:"probe_result"`
 	gameStats      *BotStats    `json:-`
 }
 
+type ProbeResult struct {
+	v.Point2d
+	Type string `json:"type"`
+}
+
 // This is the subset of data we send to players about robots
 // that are not theirs.
 type OtherRobot struct {
@@ -370,9 +375,15 @@ func (r *Robot) Tick(g *game) {
 
 	if r.Probe != nil && r.ProbeResult == nil {
 		probe_vector := r.Probe.Sub(r.Position)
-		coll, pos, _ := r.checkCollisions(g, probe_vector)
+		coll, pos, robo := r.checkCollisions(g, probe_vector)
 		if coll {
-			r.ProbeResult = pos
+			r.ProbeResult = &ProbeResult{
+				Point2d: *pos,
+				Type:    "obstacle",
+			}
+			if robo != nil {
+				r.ProbeResult.Type = "robot"
+			}
 		}
 	}
 }