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Content from color import Color import math import bhi160 import display import utime import urandom import buttons disp = display.open() particle_size = 5 width = int(160 / particle_size) height = int(80 / particle_size) num_particles = 250 / particle_size bounce_factor = 0.3 accelerometer = bhi160.BHI160Accelerometer() particles = [] grid = [[False for i in range(height)] for j in range(width)] class Particle: def __init__(self, loc): global grid self.col = Color.from_hsv(urandom.randrange(0,365), 0.75, 1.0) self.loc = list(float(i) for i in loc) self.v = [0.0, 0.0] grid[loc[0]][loc[1]] = True def draw(self): disp.rect(int(self.loc[0]*particle_size), int(self.loc[1]*particle_size), int(self.loc[0]*particle_size + (particle_size-1)), int(self.loc[1]*particle_size + (particle_size-1)), col=self.col) def update(self, a): self.v[0] += a.x self.v[1] -= a.y # y axis reversed def move(self): if self.v[0] > 0 and occupied([self.loc[0]+1, self.loc[1]]): if occupied([self.loc[0]-1, self.loc[1]]): self.v[0] = 0 else: self.v[0] *= -bounce_factor return if self.v[0] < 0 and occupied([self.loc[0]-1, self.loc[1]]): if occupied([self.loc[0]+1, self.loc[1]]): self.v[0] = 0 else: self.v[0] *= -bounce_factor return if self.v[1] > 0 and occupied([self.loc[0], self.loc[1]+1]): if occupied([self.loc[1], self.loc[1]-1]): self.v[1] = 0 else: self.v[1] *= -bounce_factor return if self.v[1] < 0 and occupied([self.loc[0], self.loc[1]-1]): if occupied([self.loc[1], self.loc[1]+1]): self.v[1] = 0 else: self.v[1] *= -bounce_factor return grid[int(self.loc[0])][int(self.loc[1])] = False self.loc[0] += self.v[0] self.loc[1] += self.v[1] if self.loc[0] > width-1: self.loc[0] = float(width-1) if self.loc[0] < 0: self.loc[0] = 0 if self.loc[1] > height-1: self.loc[1] = float(height-1) if self.loc[1] < 0: self.loc[1] = 0 grid[int(self.loc[0])][int(self.loc[1])] = True # self.col[1] / 2 # self.col[1] += (math.fabs(self.v[0]) + math.fabs(self.v[1]))/4 # if self.col[1] < 0.25: # self.col[1] = 0.25 def occupied(loc): if loc[0] < 0 or loc[0] >= width: return True if loc[1] < 0 or loc[1] >= height: return True return grid[int(loc[0])][int(loc[1])] for i in range(num_particles): loc = [urandom.randrange(0,width), urandom.randrange(0,height)] while occupied(loc): loc = [urandom.randrange(0,width), urandom.randrange(0,height)] particles.append(Particle(loc)) counter = 0 disp.clear([0,0,0]) disp.print("<-bounce+>", posx=10, posy=60, fg=[0,255,255]) disp.update() utime.sleep(3) while True: if counter % 4 == 0: samples = accelerometer.read() if len(samples) > 0: disp.clear() for part in particles: if counter % 4 == 0: part.update(samples[0]) part.move() part.draw() disp.line(0, 79, int(160*bounce_factor), 79, col=[0,255,255]) disp.update() counter += 1 v = buttons.read(buttons.BOTTOM_LEFT) if v == 0: l_button_pressed = False if not l_button_pressed and v & buttons.BOTTOM_LEFT != 0: l_button_pressed = True bounce_factor -= 0.1 if bounce_factor < 0.0: bounce_factor = 0.0 v = buttons.read(buttons.BOTTOM_RIGHT) if v == 0: r_button_pressed = False if not r_button_pressed and v & buttons.BOTTOM_RIGHT != 0: r_button_pressed = True bounce_factor += 0.1 if bounce_factor > 1.0: bounce_factor = 1.0