snake: 55aeb245c503 main.py

snake

view main.py @ 174:55aeb245c503

fixed bug of lost previous snakes memory, while turning from run mode to step and back fixes #19

author	Alex Martynov
date	Fri, 24 Dec 2010 00:58:36 +0300
parents	008be193a0a3
children	fde515c7a4c8

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 if self.step_id == 0:

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

90 self.run()

92 def run (self):

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

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

95 previous game"""

96 if self.step_id > self.game_length:

97 self.end()

98 return

99 if self.dead_snake_check() == False:

100 return

101 self.step_id = self.step_id+1

102 self.engine.step()

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

104 return

105

106 def step (self):

107 """Do the next game step"""

108 if self.dead_snake_check() == False:

109 return

110 if self.step_id == 0:

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

112 if self.step_id <= self.game_length:

113 if self.after_id != None:

114 self.canvas.after_cancel(self.after_id)

115 pass

116 self.step_id = self.step_id+1

117 self.engine.step()

118 pass

119 else:

120 self.end()

121 pass

122 return

123

124 def dead_snake_check(self):

125 """Check the number of snakes alive.

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

127 dead_snakes = 0

128 for snake in self.engine.snakes:

129 if snake == None:

130 dead_snakes=dead_snakes+1

131 pass

132 if dead_snakes >= 3:

133 self.end()

134 return False

135

136 def restart(self, survived):

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

138

139 Options:

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

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

142 if survived == "yes":

143 snake_set = self.engine.snakes

144 else:

145 snake_set = self.engine.psnakes

146 self.step_id = 0

147 for i, snake in enumerate(snake_set):

148 if snake_set[i] != None:

149 self.engine.snakes[i] = snake

150 self.engine.create_snake(i, snake)

151 self.engine.refill()

152 self.engine.redraw()

153

154 def end (self):

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

156 if self.after_id != None:

157 self.canvas.after_cancel(self.after_id)

158 pass

159 self.step_id = self.game_length + 666

160 root = tk.Tk()

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

162 end_label.pack()

163 root.mainloop()

164 pass

165

166 if __name__ == "__main__":

167 snake_batle = UI()

168 snake_batle.root.mainloop()