def target(self, enemy_tank, grid):
gz = constant.GRID_SIZE
tank = grid.get_object(self._object_id)
x,y = enemy_tank.position
enemy_hitbox = enemy_tank.hitbox
gx,gy = int(x/gz), int(y/gz)
t_angle = tank.angle
mna, mxa = math.inf,-math.inf
a1, a2 = None, None
for bullet_angle in self._2damap[gx][gy]:
trajectory = int(bullet_angle/10)
bounce = bullet_angle % 10
if not self._asafe[trajectory]: continue
l0 = self._amap[trajectory][bounce-1] if bounce !=0 else tank.position
l1 = self._amap[trajectory][bounce]
line = [l0,l1]
if (collision.line_square(line, enemy_hitbox)):
bullet_dir = math.atan2(l1[1]-l0[1],l1[0]-l0[0])
a_diff = VMath.angle_diff(bullet_dir, enemy_tank.angle)
a_diff = VMath.astc(a_diff)
if a_diff < mna:
a1 = trajectory
mna = a_diff
if a_diff > mxa:
a2 = trajectory
mxa = a_diff
if a1 is None and a2 is None: return False
if a1 == a2: return [a1]
else: return [a1,a2]
def _signed_distance(p1,p2,angle):
distance = round(VMath.distance(p1,p2), constant.PRECISION)
l_angle = math.atan2(p2[1]-p1[1],p2[0]-p1[0])
diff_angle = VMath.angle_diff(angle,l_angle)
if diff_angle > math.pi/2:
distance *= -1
return distance
def render_entity(self,
surface,
sprite,
entity,
time_step,
angle=None,
pivot=[0, 0]):
if isinstance(sprite, pygame.Surface): tile = sprite
else:
i, j = sprite
tile = self._sprite_sheet[i][j].copy().convert_alpha()
if not angle: a1, a2 = entity.old_angle, entity.angle
else: a1, a2 = angle[0], angle[1]
angle = a1 + VMath.angle_diff(a1, a2) * time_step
rot_tile = pygame.transform.rotate(tile, -math.degrees(angle))
center = rot_tile.get_width() / 2, rot_tile.get_height() / 2
x1, y1 = entity.position
x0, y0 = entity.old_position
entity_pos = x0 + (x1 - x0) * time_step, y0 + (y1 - y0) * time_step
pos = VMath.subtract(entity_pos, center)
# Account for pivot
pos = VMath.subtract(pos, VMath.rotate([pivot], angle)[0])
surface.blit(rot_tile, pos)