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""" display.display - Routines to init and display graphics on screen """
import os
import pygame
from .scaling import Scaling
from .static import CGA_COLORS
DEBUG = os.getenv("DEBUG")
def gen_backdrop(color, color2):
""" generates backdrop with 50% dithering """
srfc = pygame.Surface((320, 240))
for x in range(320):
for y in range(240):
srfc.set_at((x,y),color if (x+y)%2 else color2)
return srfc
class Display():
"""display.Display - Handles graphics. Init, clear, draw, borders... """
def __init__(self):
pygame.display.init()
mode_info = pygame.display.Info()
self.screen = pygame.display.set_mode(
(mode_info.current_w, mode_info.current_h),
pygame.FULLSCREEN | pygame.SCALED,
vsync = 1 )
Scaling.update_scaling(self.screen.get_size())
self.backdrop = pygame.transform.scale_by(
gen_backdrop(CGA_COLORS[1], CGA_COLORS[8]),
1_000 * Scaling.factor)
if DEBUG:
print(
"DISPLAY: \n"
f" {Scaling.active = }\n"
f" {Scaling.borders = }\n"
f" {Scaling.factor = }\n")
def __del__(self):
pygame.display.quit()
def update(self, groups = None):
""" Updates the screen: clear, blit gropus and flip """
self.screen.blit(self.backdrop, (Scaling.left,Scaling.top))
for group in groups:
group.draw(self.screen)
self.screen.fill(0, rect=Scaling.borders[0])
self.screen.fill(0, rect=Scaling.borders[1])
pygame.display.flip()
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