examples: Convert hex_snowflake to simple namespace

examples/hex_snowflake/hex_snowflake/cell.py

@@ -1,7 +1,7 @@
-from mesa import Agent
+import mesa
 
 
-class Cell(Agent):
+class Cell(mesa.Agent):
     """Represents a single ALIVE or DEAD cell in the simulation."""
 
     DEAD = 0

examples/hex_snowflake/hex_snowflake/model.py

@@ -1,11 +1,9 @@
-from mesa import Model
-from mesa.time import SimultaneousActivation
-from mesa.space import HexGrid
+import mesa
 
 from hex_snowflake.cell import Cell
 
 
-class HexSnowflake(Model):
+class HexSnowflake(mesa.Model):
     """
     Represents the hex grid of cells. The grid is represented by a 2-dimensional array of cells with adjacency rules specific to hexagons.
     """
@@ -21,10 +19,10 @@ def __init__(self, width=50, height=50):
         # computing their next state simultaneously.  This needs to
         # be done because each cell's next state depends on the current
         # state of all its neighbors -- before they've changed.
-        self.schedule = SimultaneousActivation(self)
+        self.schedule = mesa.time.SimultaneousActivation(self)
 
         # Use a hexagonal grid, where edges wrap around.
-        self.grid = HexGrid(width, height, torus=True)
+        self.grid = mesa.space.HexGrid(width, height, torus=True)
 
         # Place a dead cell at each location.
         for (contents, x, y) in self.grid.coord_iter():

examples/hex_snowflake/hex_snowflake/server.py

@@ -1,14 +1,13 @@
-from mesa.visualization.modules import CanvasHexGrid
-from mesa.visualization.ModularVisualization import ModularServer
+import mesa
 
 from hex_snowflake.portrayal import portrayCell
 from hex_snowflake.model import HexSnowflake
 
 width, height = 50, 50
 
 # Make a world that is 50x50, on a 500x500 display.
-canvas_element = CanvasHexGrid(portrayCell, width, height, 500, 500)
+canvas_element = mesa.visualization.CanvasHexGrid(portrayCell, width, height, 500, 500)
 
-server = ModularServer(
+server = mesa.visualization.ModularServer(
     HexSnowflake, [canvas_element], "Hex Snowflake", {"height": height, "width": width}
 )