3D, 贴地运动

贴地运动，想要做好一款游戏，需要非常多的数学知识 

https://kidscancode.org/godot_recipes/4.x/3d/3d_align_surface/index.html

 

 

func align_with_y(xform, new_y):
　　xform.basis.y = new_y
　　xform.basis.x = -xform.basis.z.cross(new_y)
　　xform.basis = xform.basis.orthonormalized()
　　return xform

 

func _physics_process(delta):
　　velocity += gravity * delta
　　get_input(delta)
　　velocity = move_and_slide_with_snap(velocity, Vector3.DOWN*2, Vector3.UP, true)
　　var n = $RayCast.get_collision_normal()
　　var xform = align_with_y(global_transform, n)
　　global_transform = global_transform.interpolate_with(xform, 12 * delta)