snake: engine.py annotate

snake

annotate engine.py @ 105:020c62119e6f

move_snake() edited

author	Alex Martynov <martiran@kodomo.fbb.msu.ru>
date	Mon, 20 Dec 2010 11:27:56 +0300
parents	30d062a2d532
children	b38281ca9b5c

rev	line source
martiran@12	1 import random as rnd
martiran@15	2 import Tkinter as tk
Alex@66	3 import snake
martiran@12	4
martiran@6	5 directions = [(0,1), (1,0), (0,-1), (-1,0)]
martiran@46	6 tm = [[0, -1], [1, 0]]
martiran@1	7
martiran@5	8 class Cell(object):
martiran@15	9 def __init__(self, x, y, canvas = None):
martiran@1	10 self.x = x
martiran@1	11 self.y = y
martiran@1	12 self.canvas = canvas
martiran@1	13 self.snake = None
martiran@28	14 self.type = 'empty'
martiran@1	15 return
martiran@6	16 def redraw(self):
martiran@54	17 field_size = min(self.canvas.winfo_height(), self.canvas.winfo_width())
Alex@102	18 offset = ((self.canvas.winfo_width() - field_size)/2.0, (self.canvas.winfo_height() - field_size)/2.0)
Alex@101	19 x0=offset[0] + self.x*field_size/21.0
Alex@101	20 y0=offset[1] + self.y*field_size/21.0
Alex@101	21 x1=offset[0] + (self.x+1)*field_size/21.0
Alex@101	22 y1=offset[1] + (self.y+1)*field_size/21.0
Alex@101	23 x2=offset[0] + (self.x+1/2.0)*field_size/21.0
martiran@15	24 if self.type == 'wall':
Alex@101	25 self.canvas.create_rectangle(x0, y0, x1, y1, fill="grey")
martiran@15	26 pass
martiran@15	27 elif self.type == 'empty':
Alex@101	28 self.canvas.create_rectangle(x0, y0, x1, y1, fill="black")
martiran@15	29 pass
martiran@15	30 elif self.type == 'body':
Alex@101	31 self.canvas.create_rectangle(x0, y0, x1, y1, fill=self.snake.color)
martiran@15	32 pass
martiran@15	33 elif self.type == 'head':
Alex@101	34 self.canvas.create_oval(x0, y0, x1, y1, fill=self.snake.color)
martiran@15	35 pass
martiran@15	36 elif self.type == 'tail':
Alex@101	37 self.canvas.create_polygon(x0, y0, x1, y0, x2, y1, fill=self.snake.color)
martiran@15	38 pass
martiran@15	39 return
martiran@6	40 def __eq__(self, pattern):
martiran@52	41 if pattern.type == 'any':
martiran@6	42 return True
martiran@52	43 if pattern.type != self.type:
martiran@6	44 return False
martiran@52	45 if pattern.snake_type == 'my' and pattern.snake != self.snake:
martiran@52	46 return False
martiran@52	47 elif pattern.snake_type == 'enemy' and pattern.snake == self.snake:
martiran@52	48 return False
martiran@52	49 return True
martiran@6	50 def clear(self):
martiran@1	51 self.snake = None
martiran@1	52 self.type = 'empty'
martiran@1	53 return
martiran@1	54
martiran@2	55
martiran@5	56 class Engine(object):
martiran@6	57 def __init__(self, canvas):
martiran@1	58 self.canvas = canvas
martiran@54	59 self.w = min(canvas.winfo_height(), canvas.winfo_width())
martiran@54	60 self.h = min(canvas.winfo_height(), canvas.winfo_width())
martiran@12	61 self.snakes = [None, None, None, None]
martiran@9	62 self.init_field()
martiran@9	63 return
martiran@9	64 def init_field (self):
martiran@9	65 self.field = {}
martiran@9	66 for x in range(21):
martiran@9	67 for y in range(21):
martiran@9	68 self.field[x, y] = Cell(x, y, self.canvas)
martiran@9	69 for y in range(21):
martiran@9	70 self.field[0, y].type = 'wall'
martiran@9	71 self.field[20, y].type = 'wall'
martiran@9	72 for x in range(1,20):
martiran@9	73 self.field[x, 0].type = 'wall'
martiran@9	74 self.field[x, 20].type = 'wall'
Alex@103	75 self.refill()
Alex@93	76 self.redraw()
martiran@1	77 return
martiran@6	78 def step(self):
Alex@62	79 for i, snake in enumerate(self.snakes):
Alex@103	80 if snake != None:
Alex@103	81 if len(snake.cells) == 0:
Alex@103	82 self.snakes[i] = None
Alex@103	83 continue
Alex@66	84 self.legal_moves(snake)
martiran@12	85 self.move_snake(snake)
martiran@12	86 self.refill()
martiran@9	87 self.redraw()
martiran@9	88 return
martiran@9	89 def move_snake(self, snake):
martiran@105	90 head = snake.cells[0]
martiran@12	91 for rule in snake.rules:
martiran@105	92 for direction in snake.legal_dir:
martiran@105	93 rule.rotate(direction)
martiran@105	94 if rule.applies(self.field, head.x, head.y) == True:
martiran@105	95 self.move_do(snake, direction)
martiran@105	96 return
martiran@105	97 if snake.legal_dir != []:
Alex@99	98 self.move_do(snake, snake.legal_dir[0])
martiran@12	99 pass
martiran@14	100 return
Alex@94	101 def move_do(self, snake, applied_dir):
Alex@94	102 dir_cell = self.field[snake.cells[0].y + applied_dir[0], snake.cells[0].x + applied_dir[1]]
Alex@90	103 if dir_cell.type == 'empty':
Alex@90	104 snake.cells.insert(0,dir_cell)
Alex@90	105 del snake.cells[-1]
Alex@90	106 pass
Alex@90	107 elif (dir_cell.type == 'tail' and dir_cell.snake != snake):
Alex@90	108 snake.cells.insert(0,dir_cell)
Alex@90	109 del dir_cell.snake.cells[-1]
Alex@90	110 pass
Alex@90	111
martiran@6	112 def create_snake(self, snake_number):
martiran@46	113 cells_id = []
martiran@46	114 for y in range(10):
martiran@56	115 cells_id.append((10, y+1))
martiran@46	116 for rot_num in range(snake_number - 1):
Alex@62	117 for i, cell in enumerate(cells_id):
Alex@82	118 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)
martiran@46	119 cells = []
martiran@46	120 for cell in cells_id:
Alex@60	121 cells.append(self.field[cell])
martiran@46	122 color_dic = {
martiran@46	123 1:'blue',
martiran@46	124 2:'green',
martiran@46	125 3:'yellow',
martiran@46	126 4:'red',}
martiran@46	127 self.snakes[snake_number-1] = snake.Snake(cells, color_dic[snake_number])
Alex@77	128 return self.snakes[snake_number-1]
martiran@6	129 def refill(self):
martiran@12	130 for x in range(1,20):
martiran@12	131 for y in range(1,20):
martiran@12	132 self.field[x, y].type = 'empty'
martiran@31	133 self.field[x, y].snake = None
martiran@12	134 pass
martiran@12	135 for snake in self.snakes:
martiran@12	136 if snake == None:
martiran@12	137 pass
martiran@12	138 else:
martiran@31	139 snake.fill()
martiran@12	140 pass
martiran@14	141 return
martiran@9	142 def redraw(self):
martiran@16	143 self.canvas.delete(all)
martiran@32	144 for cell_coord in self.field:
martiran@32	145 self.field[cell_coord].redraw()
martiran@15	146 return
martiran@6	147 def legal_moves(self, snake):
martiran@6	148 snake.legal_dir = []
martiran@6	149 for direction in directions:
martiran@17	150 dir_cell = self.field[snake.cells[0].y + direction[0], snake.cells[0].x + direction[1]]
martiran@12	151 if (dir_cell.type == 'empty' or (dir_cell.type == 'tail' and dir_cell.snake != snake)):
martiran@6	152 snake.legal_dir.append(direction)
Alex@90	153 rnd.shuffle(snake.legal_dir)
martiran@6	154 return
martiran@6	155