def move_torpedo(self, torpedo_id, dx, dy):
coords = self.canvas.coords(torpedo_id)
if self.check_underwater(torpedo_id):
self.canvas.move(torpedo_id, dx, dy)
# detect if torpedo hit ship
overlapping_objects = set(
self.canvas.find_overlapping(*self.canvas.coords(torpedo_id)))
ships = set(self.canvas.find_withtag("ship"))
overlapping_ships = overlapping_objects & ships
if overlapping_ships:
self.out_queue.put("hit %d" % overlapping_ships.pop())
torpedo_center = graphics_helpers.circle_center_from_bbox(
5, coords)
self.canvas.delete(torpedo_id)
kaboom = self.canvas.create_image(torpedo_center[0],
torpedo_center[1],
image=self.explosion)
self.root.after(500, self.canvas.delete, kaboom)
self.root.after(50, self.move_torpedo, *[torpedo_id, dx, dy])
else:
# if torpedo left the sea, delete it
self.canvas.delete(torpedo_id)
def torpedo_deltas(self, torpedo_coords, dest_coords): torpedo_center = graphics_helpers.circle_center_from_bbox(5, torpedo_coords) # get difference of destination coordinates from center coordinates tx, ty = [float(dest_coords[0]-torpedo_center[0]), float(dest_coords[1]-torpedo_center[1])] # dx, dy and desired speed form a right triangle return graphics_helpers.deltas_for_speed(7, tx, ty)
def torpedo_deltas(self, torpedo_coords, dest_coords):
torpedo_center = graphics_helpers.circle_center_from_bbox(
5, torpedo_coords)
# get difference of destination coordinates from center coordinates
tx, ty = [
float(dest_coords[0] - torpedo_center[0]),
float(dest_coords[1] - torpedo_center[1])
]
# dx, dy and desired speed form a right triangle
return graphics_helpers.deltas_for_speed(7, tx, ty)
def move_torpedo(self, torpedo_id, dx, dy):
coords = self.canvas.coords(torpedo_id)
if self.check_underwater(torpedo_id):
self.canvas.move(torpedo_id, dx, dy)
# detect if torpedo hit ship
overlapping_objects = set(self.canvas.find_overlapping(*self.canvas.coords(torpedo_id)))
ships = set(self.canvas.find_withtag("ship"))
overlapping_ships = overlapping_objects & ships
if overlapping_ships:
self.out_queue.put("hit %d" % overlapping_ships.pop())
torpedo_center = graphics_helpers.circle_center_from_bbox(5, coords)
self.canvas.delete(torpedo_id)
kaboom = self.canvas.create_image(torpedo_center[0], torpedo_center[1], image=self.explosion)
self.root.after(500, self.canvas.delete, kaboom)
self.root.after(50, self.move_torpedo, *[torpedo_id, dx, dy])
else:
# if torpedo left the sea, delete it
self.canvas.delete(torpedo_id)
