snake: 378227a79ebc engine.py

snake

view engine.py @ 93:378227a79ebc

added redraw() after field creation

author	Alex Martynov
date	Mon, 20 Dec 2010 01:57:18 +0300
parents	5d7d9c19b6c2
children	61be18bf77a2

line source

1 import random as rnd

2 import Tkinter as tk

3 import snake

5 directions = [(0,1), (1,0), (0,-1), (-1,0)]

6 tm = [[0, -1], [1, 0]]

8 class Cell(object):

9 def __init__(self, x, y, canvas = None):

10 self.x = x

11 self.y = y

12 self.canvas = canvas

13 self.snake = None

14 self.type = 'empty'

15 return

16 def redraw(self):

17 field_size = min(self.canvas.winfo_height(), self.canvas.winfo_width())

18 offset = (self.canvas.winfo_width() - field_size, self.canvas.winfo_height() - field_size)

19 if self.type == 'wall':

20 self.canvas.create_rectangle(offset[0], offset[1], offset[0] + self.x*field_size/21.0, offset[1] + self.y*field_size/21.0, fill="grey")

21 pass

22 elif self.type == 'empty':

23 self.canvas.create_rectangle(offset[0], offset[1], offset[0] + self.x*field_size/21.0, offset[1] + self.y*field_size/21.0, fill="black")

24 pass

25 elif self.type == 'body':

26 self.canvas.create_rectangle(offset[0], offset[1], offset[0] + self.x*field_size/21.0, offset[1] + self.y*field_size/21.0, fill=self.snake.color)

27 pass

28 elif self.type == 'head':

29 self.canvas.create_oval(offset[0], offset[1], offset[0] + self.x*field_size/21.0, offset[1] + self.y*field_size/21.0, fill=self.snake.color)

30 pass

31 elif self.type == 'tail':

32 self.canvas.create_polygon(offset[0], offset[1], offset[0] + self.x*field_size/21.0, offset[1], offset[0] + self.x*field_size/(2*21.0), offset[1] + self.y*field_size/21.0, fill=self.snake.color)

33 pass

34 return

35 def __eq__(self, pattern):

36 if pattern.type == 'any':

37 return True

38 if pattern.type != self.type:

39 return False

40 if pattern.snake_type == 'my' and pattern.snake != self.snake:

41 return False

42 elif pattern.snake_type == 'enemy' and pattern.snake == self.snake:

43 return False

44 return True

45 def clear(self):

46 self.snake = None

47 self.type = 'empty'

48 return

51 class Engine(object):

52 def __init__(self, canvas):

53 self.canvas = canvas

54 self.w = min(canvas.winfo_height(), canvas.winfo_width())

55 self.h = min(canvas.winfo_height(), canvas.winfo_width())

56 self.snakes = [None, None, None, None]

57 self.init_field()

58 return

59 def init_field (self):

60 self.field = {}

61 for x in range(21):

62 for y in range(21):

63 self.field[x, y] = Cell(x, y, self.canvas)

64 for y in range(21):

65 self.field[0, y].type = 'wall'

66 self.field[20, y].type = 'wall'

67 for x in range(1,20):

68 self.field[x, 0].type = 'wall'

69 self.field[x, 20].type = 'wall'

70 self.redraw()

71 return

72 def step(self):

73 for i, snake in enumerate(self.snakes):

74 if len(snake.cells) == 0:

75 self.snakes[i] = None

76 if snake == None:

77 pass

78 else:

79 self.legal_moves(snake)

80 self.move_snake(snake)

81 self.refill()

82 self.redraw()

83 return

84 def move_snake(self, snake):

85 applied_dir = None

86 for rule in snake.rules:

87 if applied_dir != None:

88 choose_dir = []

89 for direction in snake.legal_dir:

90 rule.direction = direction

91 if rule.applies() == True:

92 choose_dir.append(direction)

93 pass

94 pass

95 if len(choose_move) != 0:

96 applied_dir = choose_dir[int(rnd.random()*len(choose_dir))]

97 pass

98 else:

99 dir_cell = self.field[snake.cells[0].y + applied_dir[0], snake.cells[0].x + applied_dir[1]]

100 self.move_do()

101 break

102 if applied_dir == None:

103 applied_dir = snake.legal_dir[int(rnd.random()*len(snake.legal_dir))]

104 dir_cell = self.field[snake.cells[0].y + applied_dir[0], snake.cells[0].x + applied_dir[1]]

105 self.move_do()

106 pass

107 return

108 def move_do(self, snake, dir_cell):

109 if dir_cell.type == 'empty':

110 snake.cells.insert(0,dir_cell)

111 del snake.cells[-1]

112 pass

113 elif (dir_cell.type == 'tail' and dir_cell.snake != snake):

114 snake.cells.insert(0,dir_cell)

115 del dir_cell.snake.cells[-1]

116 pass

117

118 def create_snake(self, snake_number):

119 cells_id = []

120 for y in range(10):

121 cells_id.append((10, y+1))

122 for rot_num in range(snake_number - 1):

123 for i, cell in enumerate(cells_id):

124 cells_id[i] = ((tm[0][0]*(cell[0]-10) + tm[0][1]*(cell[1]-10))+10,(tm[1][0]*(cell[0]-10) + tm[1][1]*(cell[1]-10))+10)

125 cells = []

126 for cell in cells_id:

127 cells.append(self.field[cell])

128 color_dic = {

129 1:'blue',

130 2:'green',

131 3:'yellow',

132 4:'red',}

133 self.snakes[snake_number-1] = snake.Snake(cells, color_dic[snake_number])

134 return self.snakes[snake_number-1]

135 def refill(self):

136 for x in range(1,20):

137 for y in range(1,20):

138 self.field[x, y].type = 'empty'

139 self.field[x, y].snake = None

140 pass

141 for snake in self.snakes:

142 if snake == None:

143 pass

144 else:

145 snake.fill()

146 pass

147 return

148 def redraw(self):

149 self.canvas.delete(all)

150 for cell_coord in self.field:

151 self.field[cell_coord].redraw()

152 return

153 def legal_moves(self, snake):

154 snake.legal_dir = []

155 for direction in directions:

156 dir_cell = self.field[snake.cells[0].y + direction[0], snake.cells[0].x + direction[1]]

157 if (dir_cell.type == 'empty' or (dir_cell.type == 'tail' and dir_cell.snake != snake)):

158 snake.legal_dir.append(direction)

159 rnd.shuffle(snake.legal_dir)

160 return

161