Major update of all demo programs to use new PEP8 bindings, etc

DemoPrograms old/Demo_Graph_pymunk_2D_Graphics.py

@@ -0,0 +1,77 @@
+import PySimpleGUIWeb as sg
+# import PySimpleGUI as sg
+import pymunk
+import random
+import socket
+
+"""
+    Demo that shows integrating PySimpleGUI with the pymunk library.  This combination
+    of PySimpleGUI and pymunk could be used to build games.
+    Note this exact same demo runs with PySimpleGUIWeb by changing the import statement
+"""
+
+class Ball():
+    def __init__(self, x, y, r, *args, **kwargs):
+        mass = 10
+        self.body = pymunk.Body(mass,
+                                pymunk.moment_for_circle(mass, 0, r, (0, 0)))  # Create a Body with mass and moment
+        self.body.position = x, y
+        self.shape = pymunk.Circle(self.body, r, offset=(0, 0))  # Create a box shape and attach to body
+        self.shape.elasticity = 0.99999
+        self.shape.friction = 0.8
+        self.gui_circle_figure = None
+
+class Playfield():
+    def __init__(self):
+        self.space = pymunk.Space()
+        self.space.gravity = 0, 200
+        self.add_wall((0, 400), (600, 400))  # ground
+        self.add_wall((0, 0), (0, 600))  # Left side
+        self.add_wall((600, 0), (600, 400))  # right side
+
+    def add_wall(self, pt_from, pt_to):
+        body =  pymunk.Body(body_type=pymunk.Body.STATIC)
+        ground_shape = pymunk.Segment(body, pt_from, pt_to, 0.0)
+        ground_shape.friction = 0.8
+        ground_shape.elasticity = .99
+        self.space.add(ground_shape)
+
+    def add_balls(self):
+        self.arena_balls = []
+        for i in range(1, 200):
+            x = random.randint(0, 600)
+            y = random.randint(0, 400)
+            r = random.randint(1, 10)
+            ball = Ball(x, y, r)
+            self.arena_balls.append(ball)
+            area.space.add(ball.body, ball.shape)
+            ball.gui_circle_figure = graph_elem.DrawCircle((x, y), r, fill_color='black', line_color='red')
+
+
+# -------------------  Build and show the GUI Window -------------------
+graph_elem = sg.Graph((600, 400), (0, 400), (600, 0), enable_events=True, key='_GRAPH_', background_color='lightblue')
+
+layout = [[sg.Text('Ball Test'), sg.T('My IP {}'.format(socket.gethostbyname(socket.gethostname())))],
+          [graph_elem],
+          # [sg.Up(), sg.Down()],
+          [sg.B('Kick'), sg.Button('Exit')]]
+
+window = sg.Window('Window Title', layout, ).Finalize()
+
+area = Playfield()
+area.add_balls()
+
+# ------------------- GUI Event Loop -------------------
+while True:  # Event Loop
+    event, values = window.Read(timeout=0)
+    # print(event, values)
+    if event in (None, 'Exit'):
+        break
+    area.space.step(0.02)
+
+    for ball in area.arena_balls:
+        if event == 'Kick':
+            ball.body.position = ball.body.position[0], ball.body.position[1]-random.randint(1,200)
+        graph_elem.RelocateFigure(ball.gui_circle_figure, ball.body.position[0], ball.body.position[1])
+
+window.Close()