snake: 0f7df983d610 main.py

snake

view main.py @ 168:0f7df983d610

fixed bag of unlimited run added screen

author	Alex Martynov
date	Thu, 23 Dec 2010 20:31:09 +0300
parents	36756bd7e7ed
children	4eec473f445b

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."""

38 buttons = tk.Frame(root)

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

55 for column in range(1, 6):

56 buttons.grid_columnconfigure(column, weight=1)

57 return buttons

59 def load (self, snake_number):

60 """Ask for snake file loading.

61 Initialyzing snake and draw it on the field.

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

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

64 self.step_id = 0

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

66 pass

67 if self.step_id == 0:

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

69 if file == None:

70 return

71 snake = self.engine.create_snake(snake_number)

72 snake.load(file)

73 pass

74 self.engine.refill()

75 self.engine.redraw()

76 return

78 def start (self):

79 """Init running of the game."""

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

81 self.restart(survived="yes")

82 if self.dead_snake_check() == False:

83 return

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

85 self.run()

87 def run (self):

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

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

90 previous game"""

91 if self.step_id > self.game_length:

92 self.end()

93 return

94 self.step_id = self.step_id+1

95 self.engine.step()

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

97 return

99 def step (self):

100 """Do the next game step"""

101 if self.dead_snake_check() == False:

102 return

103 if self.step_id <= self.game_length:

104 if self.after_id != None:

105 self.canvas.after_cancel(self.after_id)

106 pass

107 self.step_id = self.step_id+1

108 self.engine.step()

109 pass

110 else:

111 self.end()

112 pass

113 return

114

115 def dead_snake_check(self):

116 """Check the number of snakes alive.

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

118 dead_snakes = 0

119 for snake in self.engine.snakes:

120 if snake == None:

121 dead_snakes=dead_snakes+1

122 pass

123 if dead_snakes >= 3:

124 self.end()

125 return False

126

127 def restart(self, survived):

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

129

130 Options:

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

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

133 if survived == "yes":

134 snake_set = self.engine.snakes

135 else:

136 snake_set = self.engine.psnakes

137 self.step_id = 0

138 for i, snake in enumerate(snake_set):

139 if snake_set[i] != None:

140 self.engine.snakes[i] = snake

141 self.engine.create_snake(i, snake)

142 self.engine.refill()

143 self.engine.redraw()

144

145 def end (self):

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

147 if self.after_id != None:

148 self.canvas.after_cancel(self.after_id)

149 pass

150 self.step_id = self.game_length + 666

151 root = tk.Tk()

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

153 end_label.pack()

154 root.mainloop()

155 pass

156

157 if __name__ == "__main__":

158 snake_batle = UI()

159 snake_batle.root.mainloop()