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graphics.py
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'''
Copyright (C) Ana Belen Sarabia Cobo <belensarabia@gmail.com>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
Version 3 as published by the Free Software Foundation
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
'''
import pygame
import game_config
import pieces
class Singleton(type):
_instances = {}
def __call__(self, *args, **kwargs):
if self not in self._instances:
self._instances[self] = super(Singleton, self).__call__(*args, **kwargs)
return self._instances[self]
class Graphics(object):
"""
Render functions
"""
__metaclass__ = Singleton
def __init__(self):
self.display_surf = pygame.display.set_mode((game_config.WINDOW_WIDTH,
game_config.WINDOW_HEIGHT))
def get_display_surf(self):
return self.display_surf
def clear_display_surf(self):
self.get_display_surf().fill(game_config.BLACK)
def update_display_surf(self):
pygame.display.update()
def make_text_obj(self, text, colour, font_size):
"""
Render a given text into a surface. Gets the surface its rectangle
"""
font = pygame.font.Font(None, font_size)
surf = font.render(text, True, colour)
return surf, surf.get_rect()
def box_to_pixel_coord(self, box_x, box_y, pixel_offset_x, pixel_offset_y):
"""
Gets the pixel from coordinates (x,y) and adds an offset
"""
return (pixel_offset_x + (box_x * game_config.BOX_SIZE_IN_PIXELS),
pixel_offset_y + (box_y * game_config.BOX_SIZE_IN_PIXELS))
def draw_box_with_empty_border(self, x, y, width, height, color, border_size=3):
"""
Draws a rectangular shape with empty border
"""
if color and width > 1 and height > 1:
pygame.draw.rect(self.get_display_surf(), color, (x + border_size, y + border_size, width - border_size, height - border_size))
def draw_rectangle(self, pos_x, pos_y, width, height, color=game_config.GRAY, border_size=5):
"""
Draws the rectangle of the title
"""
pygame.draw.rect(self.get_display_surf(),
color,
(pos_x,
pos_y,
width,
height),
border_size)
def draw_board(self, board):
"""
Draws the board
"""
self.draw_rectangle(game_config.BOARD_PIXEL_POSX,
game_config.BOARD_PIXEL_POSY,
game_config.BOARD_BOX_COUNT_X * game_config.BOX_SIZE_IN_PIXELS,
game_config.BOARD_BOX_COUNT_Y * game_config.BOX_SIZE_IN_PIXELS)
for column_x in range(board.get_width()):
for row_y in range(board.get_height()):
pixel_x, pixel_y = self.box_to_pixel_coord(column_x,
row_y,
game_config.BOARD_PIXEL_POSX,
game_config.BOARD_PIXEL_POSY)
self.draw_box_with_empty_border(pixel_x,
pixel_y,
game_config.BOX_SIZE_IN_PIXELS,
game_config.BOX_SIZE_IN_PIXELS,
board.get_cell(column_x, row_y))
def draw_score_level_next_piece(self, score, level, piece):
"""
Draw values of score and level info
"""
score_surf, score_rect = self.make_text_obj('Score: %04d' % score,
game_config.WHITE, game_config.FONT_SIZE_BASIC)
level_surf, level_rect = self.make_text_obj('Level: %03d' % level,
game_config.WHITE, game_config.FONT_SIZE_BASIC)
next_surf, next_rect = self.make_text_obj('Next: ',
game_config.WHITE, game_config.FONT_SIZE_BASIC)
score_rect.left = (game_config.WINDOW_WIDTH * 1.7 - score_rect.width) / 2
text_block_height = score_rect.height + level_rect.height + next_rect.height + pieces.Piece.TEMPLATE_HEIGHT + \
3 * game_config.TEXT_LINE_SPACING
score_rect.top = (game_config.WINDOW_HEIGHT - text_block_height) / 2
self.get_display_surf().blit(score_surf, score_rect)
level_rect.left = (game_config.WINDOW_WIDTH * 1.7 - level_rect.width) / 2
level_rect.top = score_rect.top + game_config.TEXT_LINE_SPACING
self.get_display_surf().blit(level_surf, level_rect)
next_rect.left = (game_config.WINDOW_WIDTH * 1.7 - next_rect.width) / 2
next_rect.top = level_rect.top + game_config.TEXT_LINE_SPACING
self.get_display_surf().blit(next_surf, next_rect)
self.draw_piece(piece, (game_config.WINDOW_WIDTH * 1.4 - pieces.Piece.TEMPLATE_WIDTH) / 2,
next_rect.top + pieces.Piece.TEMPLATE_HEIGHT)
def draw_piece(self, piece, offset_x, offset_y):
"""
Draws the piece in the board
"""
shape_to_draw = piece.get_template()
for x in range(pieces.Piece.TEMPLATE_WIDTH):
for y in range(pieces.Piece.TEMPLATE_HEIGHT):
if shape_to_draw[y][x]:
pixel_x, pixel_y = self.box_to_pixel_coord(piece.get_pos_x() + x, piece.get_pos_y() + y,
offset_x, offset_y)
self.draw_box_with_empty_border(pixel_x, pixel_y, game_config.BOX_SIZE_IN_PIXELS,
game_config.BOX_SIZE_IN_PIXELS, piece.color)
def draw_statistics(self, count_stats, type_font):
"""
Draws game statistics
"""
font = pygame.font.Font(None, type_font)
statictics_surf = font.render('Statistics: ', True, game_config.WHITE)
statistics_rect = statictics_surf.get_rect()
statistics_rect.left = (game_config.WINDOW_WIDTH * 0.2 - statistics_rect.width) / 2
text_block_height = statistics_rect.height + pieces.Piece.TEMPLATE_HEIGHT * 7 + game_config.TEXT_LINE_SPACING * 7
statistics_rect.top = (game_config.WINDOW_HEIGHT - text_block_height) / 2
self.get_display_surf().blit(statictics_surf, statistics_rect)
i = 1
for piece in pieces.PieceSelector.piece_types:
instance_p = piece(0, 0)
count_surf = font.render("%03d" % (count_stats.get(piece, 0)), True, game_config.WHITE)
count_rect = count_surf.get_rect()
text_block_width = pieces.Piece.TEMPLATE_WIDTH + count_rect.width + game_config.TEXT_LINE_HORIZONTAL_SPACING
self.draw_piece(instance_p, (game_config.WINDOW_WIDTH * 0.2 - text_block_width ) / 2,
statistics_rect.top + (game_config.TEXT_LINE_SPACING)*i)
count_rect.left = game_config.WINDOW_WIDTH * 0.2 - text_block_width + game_config.TEXT_LINE_HORIZONTAL_SPACING
count_rect.top = statistics_rect.top + (game_config.TEXT_LINE_SPACING)*i + 15
self.get_display_surf().blit(count_surf, count_rect)
i += 1