Example #1
0
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
Example #2
0
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
Example #3
0
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)