Hi,
With Python and pygame I used to do something like the following:
if self.move_target and self.position != self.move_target:
# find angle
angle = math.atan2(self.move_target[1] - self.position[1], self.move_target[0] - self.position[0])
turn_angle = -angle * 180 / math.pi
self.turn_ship(turn_angle-90)
# calculate correct velocity for x and y
vel_x = int(round(self.current_speed * math.cos(angle)))
vel_y = int(round(self.current_speed * math.sin(angle)))
distance_x = self.move_target[0] - self.position[0]
distance_y = self.move_target[0] - self.position[0]
if abs(distance_x) < abs(vel_x) and abs(distance_y) < abs(vel_y):
vel_x = distance_x
vel_y = distance_y
# change ship position, move sprite by (vel_x, vel_y)
self.set_new_position(vel_x, vel_y)
Of course, it has some bugs, but I can't reproduce the same algorithm with Godot, sometimes it moves chaotically, probably because of bad math. On the other hand, I found, that it should be much easier with Godot, something like the following:
func set_move_target(target):
target_pos = target
func move_to_target(delta):
rotation = -(target_pos.angle() * rotation_speed * delta)
velocity = Vector2(speed, 0).rotated(rotation)
return move_and_slide(velocity)
func _process(delta):
if Input.is_mouse_button_pressed(BUTTON_LEFT):
set_move_target(get_local_mouse_position())
if target_pos:
move_to_target(delta)
But it moves even worse! It turns and moves into some random directions! What's wrong with my calculations and how to make it move correctly?
