diff --git a/visualizer.py b/visualizer.py
index dcb6a7c..d4ace48 100644
--- a/visualizer.py
+++ b/visualizer.py
@@ -39,27 +39,27 @@ class Visualizer:
 
             self.screen.fill((0, 0, 0))
 
-            pos = self.positions[self.idx]
-            x, y, z = self._transform_coordinates(pos)
-            if self.prev_z < 0 and z < 0:
-                self.drawn_lines.append((self.prev_x, self.prev_y, x, y))
-            elif z > 0:
-                self.travel_moves.append((self.prev_x, self.prev_y, x, y))
+            if self.idx < len(self.positions):
+                pos = self.positions[self.idx]
+                x, y, z = self._transform_coordinates(pos)
+                if self.prev_z < 0 and z < 0:
+                    self.drawn_lines.append((self.prev_x, self.prev_y, x, y))
+                elif z > 0:
+                    self.travel_moves.append((self.prev_x, self.prev_y, x, y))
+                self.prev_x, self.prev_y, self.prev_z = x, y, z
+                # Draw the current position
+                pygame.draw.circle(self.screen, (255, 0, 0), (int(x), int(y)), 5)
+                self.idx += 1
+
             # Draw travel moves
             for travel_move in self.travel_moves:
                 x1, y1, x2, y2 = travel_move
-                # Draw a line from the previous position to the current position
                 pygame.draw.line(self.screen, (0, 0, 255), (int(x1), int(y1)), (int(x2), int(y2)), 2)
+
+            # Draw drawn lines
             for drawn_line in self.drawn_lines:
                 x1, y1, x2, y2 = drawn_line
-                # Draw a line from the previous position to the current position
                 pygame.draw.line(self.screen, (255, 255, 255), (int(x1), int(y1)), (int(x2), int(y2)), 2)
-            self.prev_x, self.prev_y, self.prev_z = x, y, z
-            # Draw the current position
-            pygame.draw.circle(self.screen, (255, 0, 0), (int(x), int(y)), 5)
-            self.idx += 1
-            if self.idx >= len(self.positions):
-                running = False
 
             pygame.display.flip()
-            self.clock.tick(10)
\ No newline at end of file
+            self.clock.tick(60)
\ No newline at end of file