【2D导航1】基于Navigation2D的简单寻路

参考

场景设置

extends Navigation2D
var start_point = Vector2()
var end_point = Vector2()
var path = []
func _input(event):
    if event is InputEventMouseButton and event.pressed:
        if event.button_index == BUTTON_LEFT:
            print('button pressed left')
            start_point = event.position
        elif event.button_index == BUTTON_RIGHT:
            print('button pressed right')
            end_point = event.position
func _process(delta):
    path = get_simple_path(start_point,end_point,false)
    update()
func _draw():
    for point in path:
        draw_circle(point,10,Color(1,1,1))
    draw_polyline(path,Color(1,0,0),3,true)

extends Navigation2D
var target_pos
var path = []
var speed = 500.0
var can_move = false
onready var player = $Sprite
func _input(event):
    if event is InputEventMouseButton and event.pressed:
        if event.button_index == BUTTON_LEFT:
            target_pos = event.position
            path = get_simple_path(player.position,target_pos,false)
            update()
            can_move = true
func _process(delta):
    if can_move:
        if path.size()>=2:
            var now_pos = player.position
            var dis = now_pos.distance_to(path[1])
            if dis > 5:
                player.position = now_pos.linear_interpolate(path[1],speed * delta/dis)
            else:
                player.position = path[1]
                path.remove(0)
        else:
            can_move = false
func _draw():
    for point in path:
        draw_circle(point,10,Color(1,1,1))
    draw_polyline(path,Color(1,0,0),3,true)

运行效果