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#explosion class
import random, math
import pygame
from pygame.locals import *
import game, gfx
images = []
def load_game_resources():
global images
images = gfx.animstrip(gfx.load('smoke.png'))
if gfx.surface.get_bytesize()>1: #16 or 32bit
i = 1
for img in images:
img.set_alpha((1.8-math.log(i))*40, RLEACCEL)
i += 1
class Smoke:
def __init__(self, pos):
self.clocks = 0
self.rect = images[0].get_rect()
self.rect.center = pos
offset = random.randint(-7,7), random.randint(-7,7)
self.rect = self.rect.move(offset)
self.lastrect = self.rect
self.dead = 0
self.drift = random.randint(-1, 1), random.randint(-1, 1)
self.speed = random.randint(2, 4)
self.current = 0
self.life = random.randint(12, 20)
def erase(self, background):
r = background(self.rect)
if self.dead:
gfx.dirty(r.inflate(1, 2))
def draw(self, gfx):
frame = min(self.clocks // 5, 3)
img = images[frame]
r = gfx.surface.blit(img, self.rect)
gfx.dirty(r.inflate(1, 2))
def tick(self, speedadjust):
self.current += 1
if self.current >= self.speed:
self.current = 0
self.rect = self.rect.move(self.drift)
self.clocks += 1
if self.clocks >= self.life:
self.dead = 1
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