def _bounce_one(a1, a2):
# Bounces a1
dir_angle = vectors.angle(a2.pos, a1.pos)
vel_angle = vectors.angle(a1.velocity)
# If they are head on then we want to swivel them a little
if vectors.bound_angle(dir_angle[0] + 180) == vel_angle[0]:
dir_angle[0] = vectors.bound_angle(dir_angle[0] + 40)
# Keep trying distances further and further apart until they're
# not going to be overlapping any more
overlapping = True
dist = vectors.total_velocity(a1.velocity)
a2_rect = (a2.pos[0], a2.pos[1], a2.size[0], a2.size[1])
while overlapping:
new_pos = vectors.add_vectors(a1.pos,
vectors.move_to_vector(dir_angle, dist))
new_rect = (new_pos[0], new_pos[1], a1.size[0], a1.size[1])
if not geometry.rect_collision(new_rect, a2_rect, True):
overlapping = False
dist += 1
# Add a bit to be safe
new_pos = vectors.add_vectors(
a1.pos,
vectors.move_to_vector(dir_angle,
dist + vectors.total_velocity(a1.velocity)))
a1.pos = new_pos
def _bounce_one(a1, a2):
# Bounces a1
dir_angle = vectors.angle(a2.pos, a1.pos)
vel_angle = vectors.angle(a1.velocity)
# If they are head on then we want to swivel them a little
if vectors.bound_angle(dir_angle[0]+180) == vel_angle[0]:
dir_angle[0] = vectors.bound_angle(dir_angle[0] + 40)
# Keep trying distances further and further apart until they're
# not going to be overlapping any more
overlapping = True
dist = vectors.total_velocity(a1.velocity)
a2_rect = (a2.pos[0], a2.pos[1], a2.size[0], a2.size[1])
while overlapping:
new_pos = vectors.add_vectors(a1.pos, vectors.move_to_vector(
dir_angle, dist
))
new_rect = (new_pos[0], new_pos[1], a1.size[0], a1.size[1])
if not geometry.rect_collision(new_rect, a2_rect, True):
overlapping = False
dist += 1
# Add a bit to be safe
new_pos = vectors.add_vectors(a1.pos, vectors.move_to_vector(
dir_angle, dist + vectors.total_velocity(a1.velocity)
))
a1.pos = new_pos
def test_possible_collision(actors, new_rect, convert=True):
"""
Used to test if a potential actor will collide with anything else
returns True if there will be a collision
"""
for a in actors:
if geometry.rect_collision(a.rect, new_rect, convert):
return True
return False
def _will_collide(a1, a2, target=None):
"""Answers if a2 will collide with a1's movement target"""
if not target:
target = a1.current_action()[1]
target_rect = pygame.Rect((0, 0, a1.rect.width, a1.rect.height))
target_rect.left = target[0] - a1.rect.width / 2
target_rect.top = target[1] - a1.rect.height / 2
return geometry.rect_collision(target_rect, a2.rect, convert=True)
def _will_collide(a1, a2, target=None):
"""Answers if a2 will collide with a1's movement target"""
if not target:
target = a1.current_action()[1]
target_rect = pygame.Rect((0, 0, a1.rect.width, a1.rect.height))
target_rect.left = target[0] - a1.rect.width/2
target_rect.top = target[1] - a1.rect.height/2
return geometry.rect_collision(target_rect, a2.rect, convert=True)
def get_collisions(actors):
collisions = []
collided = set()
for i, a in enumerate(actors):
for j, b in enumerate(actors):
if j in collided: continue
if i == j: continue
if geometry.rect_collision(a.rect, b.rect, True):
collisions.append((a,b))
collided.add(i)
return collisions
def _bounce_both(a1, a2):
# These are the angles directly away from each other
angle1 = vectors.angle(a2.pos, a1.pos)
angle2 = vectors.angle(a1.pos, a2.pos)
vel_angle1 = vectors.angle(a1.velocity)
vel_angle2 = vectors.angle(a2.velocity)
# If they are head on then we want to swivel them a little
if vel_angle1[0] == angle2[0] and vel_angle2[0] == angle1[0]:
angle1[0] = vectors.bound_angle(angle1[0] + 20)
angle2[0] = vectors.bound_angle(angle2[0] + 20)
# Keep trying distances further and further apart until they're
# not going to be overlapping any more
overlapping = True
dist_multiplier = 0.1
while overlapping:
dist_multiplier += 0.1
new_pos1 = vectors.add_vectors(
a1.pos,
vectors.move_to_vector(angle1,
max(a1.size) * dist_multiplier))
new_pos2 = vectors.add_vectors(
a2.pos,
vectors.move_to_vector(angle2,
max(a2.size) * dist_multiplier))
new_rect1 = (new_pos1[0], new_pos1[1], a1.size[0], a1.size[1])
new_rect2 = (new_pos2[0], new_pos2[1], a2.size[0], a2.size[1])
if not geometry.rect_collision(new_rect1, new_rect2):
overlapping = False
a1.pos = new_pos1
a2.pos = new_pos2
def _bounce_both(a1, a2):
# These are the angles directly away from each other
angle1 = vectors.angle(a2.pos, a1.pos)
angle2 = vectors.angle(a1.pos, a2.pos)
vel_angle1 = vectors.angle(a1.velocity)
vel_angle2 = vectors.angle(a2.velocity)
# If they are head on then we want to swivel them a little
if vel_angle1[0] == angle2[0] and vel_angle2[0] == angle1[0]:
angle1[0] = vectors.bound_angle(angle1[0] + 20)
angle2[0] = vectors.bound_angle(angle2[0] + 20)
# Keep trying distances further and further apart until they're
# not going to be overlapping any more
overlapping = True
dist_multiplier = 0.1
while overlapping:
dist_multiplier += 0.1
new_pos1 = vectors.add_vectors(a1.pos, vectors.move_to_vector(
angle1, max(a1.size) * dist_multiplier
))
new_pos2 = vectors.add_vectors(a2.pos, vectors.move_to_vector(
angle2, max(a2.size) * dist_multiplier
))
new_rect1 = (new_pos1[0], new_pos1[1], a1.size[0], a1.size[1])
new_rect2 = (new_pos2[0], new_pos2[1], a2.size[0], a2.size[1])
if not geometry.rect_collision(new_rect1, new_rect2):
overlapping = False
a1.pos = new_pos1
a2.pos = new_pos2
def test_rectangle_collision(self):
vals = (
# R1 is up and to the left of R2
((5, 5, 15, 15), (10, 10, 20, 20), True),
((2, 2, 8, 8), (10, 10, 20, 20), False),
# R1 is up of R2
((10, 5, 20, 15), (10, 10, 20, 20), True),
((10, 2, 20, 8), (10, 10, 20, 20), False),
# R1 is up and to the right of R2
((15, 5, 25, 15), (10, 10, 20, 20), True),
((15, 2, 25, 8), (10, 10, 20, 20), False),
# R1 is left of R2
((5, 10, 15, 20), (10, 10, 20, 20), True),
((2, 10, 8, 20), (10, 10, 20, 20), False),
# R1 is right of R2
((15, 10, 25, 20), (10, 10, 20, 20), True),
((25, 10, 30, 20), (10, 10, 20, 20), False),
# R1 is down and to the left of R2
((5, 15, 15, 25), (10, 10, 20, 20), True),
((2, 15, 8, 25), (10, 10, 20, 20), False),
# R1 is down of R2
((10, 15, 20, 25), (10, 10, 20, 20), True),
((10, 22, 20, 28), (10, 10, 20, 20), False),
# R1 is down and to the right of R2
((15, 15, 25, 25), (10, 10, 20, 20), True),
((22, 15, 28, 25), (10, 10, 20, 20), False),
# Overlapping
((15, 15, 25, 25), (15, 15, 25, 25), True),# Exact same size
((279, 779, 279+41, 779+41), (279, 779, 279+41, 779+41), True),# Exact same size
((394, 79, 435, 435), (317, 79, 358, 120), False),
((10, 10, 30, 30), (15, 15, 25, 25), True),# R1 is bigger
((15, 15, 25, 25), (10, 10, 30, 30), True),# R2 is bigger
# Different types
((5, 15, 15, 25), pygame.Rect(10, 10, 20, 20), True),
((2, 15, 8, 25), pygame.Rect(10, 10, 20, 20), False),
)
for r1, r2, expected in vals:
# We want to make sure that it'll work for inputs regardless of order
try:
self.assertEqual(expected, geometry.rect_collision(r1, r2))
except Exception as e:
print("Failed on first pass of %s, %s" % (str(r1), str(r2)))
raise
try:
self.assertEqual(expected, geometry.rect_collision(r2, r1))
except Exception as e:
print("Failed on second pass of %s, %s" % (str(r1), str(r2)))
raise