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Flappybird Pitch Animation #73

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Flappybird Pitch Animation #73

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bb73d56
Apply tilt, roughly tied to gravity and flapping
dreac0nic Jan 19, 2022
0ce3474
Draw the image from its rect
dreac0nic Jan 19, 2022
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10 changes: 9 additions & 1 deletion ple/games/flappybird/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -30,9 +30,13 @@ def __init__(self,

# all in terms of y
self.vel = 0
self.tilt = 0.0
self.FLAP_POWER = 9 * self.scale
self.MAX_DROP_SPEED = 10.0
self.GRAVITY = 1.0 * self.scale
self.TILT_FLAP = 30.0
self.TILT_FALLING = -70.0
self.TILT_SPEED = 120.0

self.rng = rng

Expand All @@ -50,6 +54,7 @@ def init(self, init_pos, color):
self.game_tick = 0
self.pos_x = init_pos[0]
self.pos_y = init_pos[1]
self.tilt = 0.0

def _oscillateStartPos(self):
offset = 8 * np.sin(self.rng.rand() * np.pi)
Expand All @@ -58,6 +63,7 @@ def _oscillateStartPos(self):
def flap(self):
if self.pos_y > -2.0 * self.image.get_height():
self.vel = 0.0
self.tilt = self.TILT_FLAP
self.flapped = True

def update(self, dt):
Expand All @@ -76,6 +82,7 @@ def update(self, dt):

if self.vel < self.MAX_DROP_SPEED and self.thrust_time == 0.0:
self.vel += self.GRAVITY
self.tilt = max(self.tilt - self.TILT_SPEED*dt, self.TILT_FALLING)

# the whole point is to spread this out over the same time it takes in
# 30fps.
Expand All @@ -90,7 +97,8 @@ def update(self, dt):
self.rect.center = (self.pos_x, self.pos_y)

def draw(self, screen):
screen.blit(self.image, self.rect.center)
rotated_image = pygame.transform.rotate(self.image, self.tilt)
screen.blit(rotated_image, self.rect)


class Pipe(pygame.sprite.Sprite):
Expand Down