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import os
import pygame
from display import Scaling, INTERNAL_WIDTH, INTERNAL_HEIGHT
from stats import Stats
DEBUG = os.getenv("DEBUG")
class FieldSprite(pygame.sprite.Sprite):
def __init__(self, area: tuple):
super().__init__()
self.color = (0,255,0,255)
self.dead = False
self.area = area
self.rect = Scaling.area_to_rect(self.area)
self.image = pygame.Surface(self.rect.size, pygame.SRCALPHA)
self.image.fill(self.color)
def update(self, dt = 0):
if dt and self.dead:
self.color = (
self.color[0],
self.color[1],
self.color[2],
self.color[3] - dt/4)
if self.color[3] <= 0:
self.kill()
else:
self.image.fill(self.color)
class SliceSprite(FieldSprite):
def __init__(self, area: tuple ):
super().__init__(area)
self.color = (255,255,0,255)
self.image.fill(self.color)
self.dead = True
class Field(pygame.sprite.LayeredUpdates):
initial_area = (320_000, 220_000)
def __init__(self):
super().__init__()
self.add(FieldSprite( (0, 0, *__class__.initial_area) ))
self.area_full = __class__.initial_area[0] * __class__.initial_area[1]
def calculate_current_area(self):
return sum( s.area[2]*s.area[3] for s in self.active_sprites() )
def update_stats(self):
""" calculates remaining area and remaining percentage """
Stats.percent = 100 * self.calculate_current_area() / self.area_full
if DEBUG:
print(f"FIELD: {Stats.percent}")
def slice(
self,
pos: tuple,
direction: bool,
thickness: int) -> pygame.Rect:
""" Slice one area into two areas """
# Slicing hits the area?
for overlap in self.get_sprites_at(Scaling.scale_to_display(pos)):
if not overlap.dead:
break
else:
return None
# Save the area information and remove the sprite
ax, ay, aw, ah = overlap.area
overlap.remove(self)
# create new areas if there is any space
if direction:
x1 = ax
x2 = pos[0] - thickness
x3 = pos[0] + thickness
x4 = ax + aw
if x2 > x1:
self.add(FieldSprite( (x1, ay, x2-x1, ah) ))
if x4 > x3:
self.add(FieldSprite( (x3, ay, x4-x3, ah) ))
self.add(SliceSprite( (x2, ay, x3-x2, ah) ))
return Scaling.area_to_rect((x2, ay, x3-x2, ah))
y1 = ay
y2 = pos[1] - thickness
y3 = pos[1] + thickness
y4 = ay + ah
if y2 > y1:
self.add(FieldSprite( (ax, y1, aw, y2-y1) ))
if y4 > y3:
self.add(FieldSprite( (ax, y3, aw, y4-y3) ))
self.add(SliceSprite( (ax, y2, aw, y3-y2) ))
return Scaling.area_to_rect((ax, y2, aw, y3-y2))
def active_sprites(self):
""" Returns all sprites that are not dead """
return [s for s in self.sprites() if not s.dead]
def kill_if_not_colliding(self, sprites):
""" If there is empty fields that are not yet dead kill them """
for field in self.active_sprites():
for enemy in sprites:
if enemy.rect.colliderect(field.rect):
break
else:
field.dead = True
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