snake: 008be193a0a3 main.py

snake

view main.py @ 173:008be193a0a3

fixed not correct work of UI.restart() if whole game was made by steps

author	Alex Martynov
date	Fri, 24 Dec 2010 00:50:06 +0300
parents	4a3ae22734b0
children	55aeb245c503

line source

1 import Tkinter as tk

2 import tkFileDialog as tkfd

3 import engine

4 import snake

8 class UI(object):

9 """User Interface:

11 Atributes:

13 - 'root' - root Window game placed at

14 - 'engine' - engine of the game

15 - 'canvas' - Widget field is pictured at

16 - 'step_id' - current step of the game

17 - 'after_id' - identificator of runing game process

18 - 'step_legth' - length of the step (in ms)

19 - 'game_length' - number of the steps in one round of the game"""

20 def __init__ (self):

21 """Create Python Battle game window.

22 Initialyze engige of the game."""

23 self.root = tk.Tk()

24 self.root.title("Python Battle")

25 self.canvas = tk.Canvas(self.root, background = "black")

26 self.canvas.pack(side ="top", fill="both", expand="yes")

27 self.buttons_pack(self.root).pack(side ="bottom", fill="both", expand="no")

28 self.step_id = 0

29 self.engine = engine.Engine(self.canvas)

30 self.after_id = None

31 self.step_length = 150

32 self.game_length = 200

33 return

35 def buttons_pack(self, root):

36 """Packing the buttons in root frame.

37 Definition of button functions.

39 'Load' - ask for snake file load

40 'Run' - runs the game/next round. Next round starts with snakes survived in previous

41 'Step' - do the next dtep of the game

42 'End' - manual end of the game

43 'Restart" - restart the field with snakes of previous round"""

44 buttons = tk.Frame(root)

45 load_1 = tk.Button(buttons, text="Load 1", command=lambda: self.load(0))

46 load_1.grid(row=1, column=2, stick="news")

47 load_2 = tk.Button(buttons, text="Load 2", command=lambda: self.load(1))

48 load_2.grid(row=2, column=3, stick="news")

49 run_b = tk.Button(buttons, text="Run", command=lambda: self.start())

50 run_b.grid(row=2, column=2, stick="news")

51 restart_b = tk.Button(buttons, text="Restart", command=lambda: self.restart(survived="no"))

52 restart_b.grid(row=1, column=5, stick="news")

53 load_3 = tk.Button(buttons, text="Load 3", command=lambda: self.load(2))

54 load_3.grid(row=3, column=2, stick="news")

55 load_4 = tk.Button(buttons, text="Load 4", command=lambda: self.load(3))

56 load_4.grid(row=2, column=1, stick="news")

57 step_b = tk.Button(buttons, text="Step", command=lambda: self.step())

58 step_b.grid(row=2, column=5, stick="news")

59 end_b = tk.Button(buttons, text="End", command=lambda: self.end())

60 end_b.grid(row=3, column=5, stick="news")

61 for column in range(1, 6):

62 buttons.grid_columnconfigure(column, weight=1)

63 return buttons

65 def load (self, snake_number):

66 """Ask for snake file loading.

67 Initialyzing snake and draw it on the field.

68 Return field back to default (without snakes) after end of the game."""

69 if self.step_id == self.game_length + 666:

70 self.step_id = 0

71 self.engine.snakes = [None, None, None, None]

72 pass

73 if self.step_id == 0:

74 file = tkfd.askopenfile(title="Open file")

75 if file == None:

76 return

77 snake = self.engine.create_snake(snake_number)

78 snake.load(file)

79 pass

80 self.engine.refill()

81 self.engine.redraw()

82 return

84 def start (self):

85 """Init running of the game."""

86 if self.step_id == self.game_length + 666:

87 self.restart(survived="yes")

88 self.engine.psnakes = self.engine.snakes[:]

89 self.run()

91 def run (self):

92 """Run the game with 'step_length' ms step

93 After the end of the game - restarts it with snakes survived in

94 previous game"""

95 if self.step_id > self.game_length:

96 self.end()

97 return

98 if self.dead_snake_check() == False:

99 return

100 self.step_id = self.step_id+1

101 self.engine.step()

102 self.after_id = self.canvas.after(self.step_length, self.run)

103 return

104

105 def step (self):

106 """Do the next game step"""

107 if self.dead_snake_check() == False:

108 return

109 if self.step_id == 0:

110 self.engine.psnakes = self.engine.snakes[:]

111 if self.step_id <= self.game_length:

112 if self.after_id != None:

113 self.canvas.after_cancel(self.after_id)

114 pass

115 self.step_id = self.step_id+1

116 self.engine.step()

117 pass

118 else:

119 self.end()

120 pass

121 return

122

123 def dead_snake_check(self):

124 """Check the number of snakes alive.

125 End the game if alive snake number is less than two."""

126 dead_snakes = 0

127 for snake in self.engine.snakes:

128 if snake == None:

129 dead_snakes=dead_snakes+1

130 pass

131 if dead_snakes >= 3:

132 self.end()

133 return False

134

135 def restart(self, survived):

136 """"Restarts snakes positions after the end of the game

137

138 Options:

139 survived = "yes" - restarts next round only with snakes survived in previous round

140 survived = "no" - restart next roun with all snakes played in previous round"""

141 if survived == "yes":

142 snake_set = self.engine.snakes

143 else:

144 snake_set = self.engine.psnakes

145 self.step_id = 0

146 for i, snake in enumerate(snake_set):

147 if snake_set[i] != None:

148 self.engine.snakes[i] = snake

149 self.engine.create_snake(i, snake)

150 self.engine.refill()

151 self.engine.redraw()

152

153 def end (self):

154 """End the game and raise the window that tels about it."""

155 if self.after_id != None:

156 self.canvas.after_cancel(self.after_id)

157 pass

158 self.step_id = self.game_length + 666

159 root = tk.Tk()

160 end_label = tk.Label(root, text="End")

161 end_label.pack()

162 root.mainloop()

163 pass

164

165 if __name__ == "__main__":

166 snake_batle = UI()

167 snake_batle.root.mainloop()