Here is a video showing it, followed by the code.
import pygame, random, math
def radians(degrees):
return degrees*math.pi/180
class Particle:
def __init__(self, xy, radius, speed, angle, colour, surface):
self.x = xy[0]
self.y = xy[1]
self.speed = speed
self.angle = angle
self.radius = 3
self.surface = surface
self.colour = colour
self.rect = pygame.draw.circle(surface,(255,255,0),
(int(round(self.x,0)),
int(round(self.y,0))),
self.radius)
def move(self):
""" Update speed and position based on speed, angle """
# for constant change in position values.
self.x += math.sin(self.angle) * self.speed
self.y -= math.cos(self.angle) * self.speed
# pygame.rect likes int arguments for x and y
self.rect.x = int(round(self.x))
self.rect.y = int(round(self.y))
def draw(self):
""" Draw the particle on screen"""
pygame.draw.circle(self.surface,self.colour,self.rect.center,self.radius)
def bounce(self):
""" Tests whether a particle has hit the boundary of the environment """
if self.x > self.surface.get_width() - self.radius: # right
self.x = 2*(self.surface.get_width() - self.radius) - self.x
self.angle = - self.angle
elif self.x < self.radius: # left
self.x = 2*self.radius - self.x
self.angle = - self.angle
if self.y > self.surface.get_height() - self.radius: # bottom
self.y = 2*(self.surface.get_height() - self.radius) - self.y
self.angle = math.pi - self.angle
elif self.y < self.radius: # top
self.y = 2*self.radius - self.y
self.angle = math.pi - self.angle
def rnd():
r = random.randrange(0,255)
g = random.randrange(0,255)
b = random.randrange(0,255)
return r,g,b
def main():
xmax = 640 #width of window
ymax = 480 #height of window
white = (0, 0, 0)
black = (200,0,100)
grey = (255,255,128)
pygame.init()
screen = pygame.display.set_mode((0,0))
clock = pygame.time.Clock()
particles = []
for i in range(1000):
if i % 2:
colour = rnd()
else:
colour = rnd()
# for readability
x = random.randint(0, xmax)
y = random.randint(0, ymax)
speed = random.randint(0,20)*0.1
angle = random.randint(0,360)
radius = 3
particles.append( Particle((x, y), radius, speed, angle, colour, screen) )
done = False
while not done:
for event in pygame.event.get():
if event.type == pygame.QUIT:
done = True
break
elif event.type == pygame.KEYDOWN:
if event.key == pygame.K_ESCAPE:
done = True
break
if done:
break
screen.fill(white)
for p in particles:
p.move()
p.bounce()
p.draw()
clock.tick(40)
pygame.display.flip()
pygame.quit()
if __name__ == "__main__":
main()
Flames
A sort of flame
import pygame,random
from pygame.locals import *
xmax = 1000 #width of window
ymax = 600 #height of window
class Particle():
def __init__(self, startx, starty, col, pause):
self.x = startx
self.y = starty
self.col = col
self.sx = startx
self.sy = starty
self.pause = pause
self.radius = random.randrange(2,6)
def move(self):
if self.pause==0:
if self.y < 0:
self.x=self.sx
self.y=self.sy
else:
self.y-=1
self.x+=random.randint(-2, 2)
else:
self.pause-=1
A = 100
black = (255,255,255)
gray = (255,255,0)
B = 380
def main():
pygame.init()
screen = pygame.display.set_mode((xmax,ymax))
white = (255, 255, 255)
black = (255,0,0)
grey = (255,255,0)
clock=pygame.time.Clock()
particles = []
for part in range(1, A):
if part % 2 > 0: col = black
else: col = gray
particles.append(Particle(515, B, col, round(B*part/A)))
exitflag = False
while not exitflag:
for event in pygame.event.get():
if event.type == QUIT:
exitflag = True
elif event.type == KEYDOWN:
if event.key == K_ESCAPE:
exitflag = True
#screen.fill(black)
for p in particles:
p.move()
pygame.draw.circle(screen, p.col, (p.x, p.y), p.radius)
if random.random() > 0.5:
if p.radius > 0:
p.radius -= .1
else:
if p.radius < 6:
p.radius += .1
pygame.display.flip()
clock.tick(50)
pygame.quit()
if __name__ == "__main__":
main()
Twitter: @pythonprogrammi - python_pygame
Videos
Speech recognition gamePygame's Platform Game
