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#+AUTHOR: bdunahu
#+TITLE: PlayersCollection.py
#+DESCRIPTION: methods for handling and querying snake objects
import pygame as pg
from random import randint
from collections import namedtuple
from enum import Enum
class Direction(Enum):
UP = 0
RIGHT = 1
DOWN = 2
LEFT = 3
Point = namedtuple('Point', 'x, y')
YELLOW = (255,255,0)
RED = (255,0,0)
PURPLE = (204,51,255)
WHITE = (255,255,255)
PLAYER_COLOR = [YELLOW, RED, PURPLE, WHITE]
WINDOW_WIDTH = 640
WINDOW_HEIGHT = 480
GAME_UNITS = 40
DISPLAY = None
class Players():
def __init__(self, snake_size, num_players, display, window_width=640, window_height=480, game_units=40):
''' define array list of new Snake objects '''
global WINDOW_WIDTH
global WINDOW_HEIGHT
global GAME_UNITS
global DISPLAY
WINDOW_WIDTH = window_width
WINDOW_HEIGHT = window_height
GAME_UNITS = game_units
DISPLAY = display
self._index = 0
self.num_players = num_players
self.players = [Snake(snake_size, player_id)
for player_id in range(num_players)]
def __iter__(self):
return iter(self.players)
def __getitem__(self, index):
return self.players[index]
def full_reset(self):
''' reset every snake position '''
# map(lambda player:player.reset(), self.players)
for player in self.players:
player.reset()
def move_all(self):
''' move all snakes '''
# map(lambda player:player.move(), self.players)
for player in self.players:
player.move()
def reward_killer(self, player):
''' split play length up against killing snakes '''
killer = self._point_lookup(player.head)
if not killer == None and not killer == player:
rewards = player.score.curr_score + player.size
killer.deficit += rewards
killer.score.curr_score += rewards
killer.score.total_score += rewards
def _point_lookup(self, head):
for player in self.players:
if head in player.snake:
return player
return None
def draw(self):
''' draw all snakes '''
# map(lambda player:player.draw(), self.players)
for player in self.players:
player.draw()
class Snake():
def __init__(self, initial_size, player_id):
''' define initial size (length), direction, and position '''
self.player_id = player_id
self.size = initial_size
self.direction = None
self.head = None
self.snake = []
self.score = Score(self.player_id)
self.deficit = 0 # for how many moves does this snake need to grow?
def reset(self):
self.score.reset()
self.deficit = 0
self.direction = Direction.RIGHT.value
x = randint(0, (WINDOW_WIDTH-GAME_UNITS )//GAME_UNITS )*GAME_UNITS
y = randint(0, (WINDOW_HEIGHT-GAME_UNITS )//GAME_UNITS )*GAME_UNITS
self.head = Point(x,y)
self.snake = [self.head]
for seg in range(self.size-1):
self.snake.append(Point(self.head.x-(seg*GAME_UNITS), self.head.y))
def move(self):
''' update snake coordinates by inserting new head '''
x = self.head.x
y = self.head.y
if self.direction == Direction.RIGHT.value:
x += GAME_UNITS
if self.direction == Direction.LEFT.value:
x -= GAME_UNITS
if self.direction == Direction.DOWN.value:
y += GAME_UNITS
if self.direction == Direction.UP.value:
y -= GAME_UNITS
self.head = Point(x, y)
self.snake.insert(0,self.head)
def in_wall(self):
return True if (self.head.x > WINDOW_WIDTH - GAME_UNITS or
self.head.x < 0 or
self.head.y > WINDOW_HEIGHT - GAME_UNITS or
self.head.y < 0) else False
def draw(self):
''' draw rectangle(s) directly on field '''
for seg in self.snake: # see explanation in engine.org
pg.draw.rect(DISPLAY, PLAYER_COLOR[self.player_id], pg.Rect(seg.x, seg.y,
GAME_UNITS, GAME_UNITS))
self.score.draw()
class Score():
def __init__(self, player_id):
''' initialize score counter '''
self.player_id = player_id
self.font = pg.font.SysFont("monospace", 16)
self.curr_score = 0
self.total_score = 0
self.deaths = 0
self.kills = 0
def scored(self):
self.curr_score += 1
self.total_score += 1
def reset(self):
self.curr_score = 0
def draw(self):
''' draw score on top left '''
score_surf = self.font.render(f'Current: {self.curr_score} Total: {self.total_score}', True, PLAYER_COLOR[self.player_id])
DISPLAY.blit(score_surf, (0, 0+24*self.player_id))
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