I did something similar in Jacqueline White, bad trouble in the Red Desert, see a test movie at the link below.
horsejumping
The horse has 3 modes, running, ducking and jumping. Collision is determined from the x position for the horse compared to the amarillo and the vulture and what mode the horse is in. If the amarillo is within a certain range and the horse is not jumping there is a collision. The same thing with the vulture except that the safe mode then is ducking.
horsejumping
The horse has 3 modes, running, ducking and jumping. Collision is determined from the x position for the horse compared to the amarillo and the vulture and what mode the horse is in. If the amarillo is within a certain range and the horse is not jumping there is a collision. The same thing with the vulture except that the safe mode then is ducking.