refactor: Refactor ground.py to improve rendering accuracy

src/agent_parts/limb.py

@@ -36,4 +36,4 @@ def render(self, screen):
         # Convert pymunk Vec2d vertices to pygame coordinates
         vertices = [(int(v.x), int(v.y)) for v in vertices]
         # Draw the polygon onto the screen
-        pygame.draw.polygon(surface=screen, color=(0, 255, 0), vertices=vertices, width=0)
+        pygame.draw.polygon(surface=screen, color=(0, 255, 0), points=vertices, width=0)

src/agent_parts/motorjoint.py

@@ -19,7 +19,6 @@ def render(self, screen, body_a, body_b):
         """Render the motor joint as a small red circle between the two bodies."""
         # Get the positions of the two bodies
         pos_a_world = body_a.local_to_world(self.pivot.anchor_a)
-<<<<<<< Updated upstream
         # Draw a line connecting the two bodies
         pygame.draw.circle(
             screen, 
@@ -31,7 +30,3 @@ def render(self, screen, body_a, body_b):
     def get_angle(self):
         """Get the angle of the motor joint."""
         return self.pivot.angle
-=======
-        # Draw a circle connecting the two bodies
-        pygame.draw.circle(surface=screen, color=(255, 0, 0), center=(int(pos_a_world.x), int(pos_a_world.y)), radius=3)
->>>>>>> Stashed changes