1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
#player ship class
import pygame
from pygame.locals import *
import game, gfx, math
from random import randint
import gameinit
class Stars:
def __init__(self):
stars = []
scrwide, scrhigh = gfx.rect.size
self.maxstars = 200
for x in range(self.maxstars):
val = randint(1, 3)
color = val*40+45, val*35+45, val*45+45
speed = -val, val/2
rect = Rect(randint(0, scrwide), randint(0, scrhigh), 1, 1)
stars.append([rect, speed, color])
half = self.maxstars / 2
self.stars = stars[:half], stars[half:]
self.numstars = 20
self.dead = 0
self.odd = 0
def recalc_num_stars(self, fps):
if isinstance(game.handler, gameinit.GameInit):
#don't change stars while loading resources
return
change = int((fps - 40.0) * 1.8)
change = min(change, 15) #limit how quickly they can be added
numstars = self.numstars + change
numstars = max(min(numstars, self.maxstars/2), 0)
if numstars < self.numstars:
DIRTY, BGD = gfx.dirty, self.last_background
for rect, vel, col in self.stars[self.odd][numstars:self.numstars]:
DIRTY(BGD(rect))
self.numstars = numstars
#print 'STAR:', numstars, fps
def erase_tick_draw(self, background, gfx):
R, B = gfx.rect.bottomright
FILL, DIRTY = gfx.surface.fill, gfx.dirty
for s in self.stars[self.odd][:self.numstars]:
DIRTY(background(s[0]))
self.odd = not self.odd
for rect, (xvel, yvel), col in self.stars[self.odd][:self.numstars]:
rect.left = (rect.left + xvel) % R
rect.top = (rect.top + yvel) % B
DIRTY(FILL(col, rect))
self.last_background = background
|
