bandwidth reduction, filtering explosions and sending objects as [4]int

robot.go

@@ -181,7 +181,7 @@ func (r *Robot) checkCollisions(g *game, move_vector v.Vector2d) (bool, v.Point2
 			if bot.Id == r.Id {
 				continue
 			}
-			player_rect := v.RectFromPoint(bot.Position, 3)
+			player_rect := v.RectFromPoint(bot.Position, 5)
 			collision, _, pos := v.RectIntersection(player_rect, r.Position, move_vector)
 			if collision {
 				return collision, pos, bot
@@ -352,6 +352,17 @@ func (r *Robot) scan(g *game) {
 		}
 	}
 
+	for splo := range g.splosions {
+		dist := v.Distance(splo.Position, r.Position)
+		if dist < float32(r.Stats.ScannerRadius+int(r.ScanCounter)) {
+			s := Scanner{
+				Id:   splo.Id,
+				Type: "explosion",
+			}
+			r.Scanners = append(r.Scanners, s)
+		}
+	}
+
 }
 
 func (r *Robot) fire(projectiles map[*Projectile]bool, turn int) *Projectile {