def evnt_hndlr(self, event):
if event.type == MOUSEBUTTONDOWN:
if event.button == 1:
wind = pvector.PVector(3, 0)
for m in self.movers:
m.applyForce(wind)
elif event.button == 3:
wind = pvector.PVector(-3, 0)
for m in self.movers:
m.applyForce(wind)
def __init__(self, screen_width, screen_height):
super(Snake, self).__init__()
self.base_acc = 0.3
self.max_velocity = 2
self.v_location = pvector.PVector(30, 200)
self.v_velocity = pvector.PVector(0, 0)
self.v_acceleration = pvector.PVector(self.base_acc, self.base_acc)
self.size = 3
self.time = math.pi
def __init__(self, x, y):
super(Mover, self).__init__()
self.location = pvector.PVector(x, y)
self.velocity = pvector.PVector(0, 0)
self.acceleration = pvector.PVector(0, 0)
self.mass = 1
self.max_velo = 40
self.do_limit = False
# The gravitational constant for attraction
self.G = 0.05
def update(self, delta):
gravity = pvector.PVector(0, .16)
for m in self.movers:
m.applyGravity(gravity)
for m in self.movers:
m.update()
def update(self, delta):
self.c.update()
gravity = pvector.PVector(0, .51)
for m in self.movers:
m.applyGravity(gravity)
m.applyFriction(1)
m.update()
def shoot(self):
m = mover.Mover(self.spawnpos.x, self.spawnpos.y)
init_velocity_mag = 20
init_velocity = pvector.PVector(init_velocity_mag,
math.radians(self.angle+90),
False)
m.velocity.add(init_velocity)
return m
def update(self):
self.time += math.pi / 20
sine = math.sin(self.time) / 2
v_sine = pvector.PVector(0, sine)
self.v_acceleration.set(self.base_acc, self.base_acc)
self.v_acceleration.add(v_sine)
print(self.v_acceleration)
# Apply acceleration to velocity and location. Also limit speed
self.v_velocity.add(self.v_acceleration)
self.v_velocity.limit(self.max_velocity)
self.v_location.add(self.v_velocity)
def update(self):
self.angle += self.change_angle
if self.angle > self.max_angle:
self.angle = self.max_angle
elif self.angle < self.min_angle:
self.angle = self.min_angle
# Calculate the spawn position of the next mover
spawn_x = self.width * math.cos(math.radians(-self.angle))
spawn_x += self.bottomleft[0]
spawn_y = self.width * math.sin(math.radians(-self.angle))
spawn_y += self.bottomleft[1]
self.spawnpos = pvector.PVector(spawn_x, spawn_y)
def __init__(self, bottomleft):
super(Canon, self).__init__()
self.bottomleft = bottomleft
# Fixed size of the canon
self.width = 75
self.height = 25
# Angle of the canon
self.angle = 45
self.max_angle = 80
self.min_angle = 10
self.change_angle = 0
# Initialize the image of the canon
self.image = pygame.Surface((self.width, self.height))
# Calculate the spawn position of the next mover
self.spawnpos = pvector.PVector(0, 0)