godot/demos/2d/navpoly/navigation.gd

64 lines
1.1 KiB
GDScript

extends Navigation2D
# member variables here, example:
# var a=2
# var b="textvar"
var begin=Vector2()
var end=Vector2()
var path=[]
const SPEED=200.0
func _process(delta):
if (path.size()>1):
var to_walk = delta*SPEED
while(to_walk>0 and path.size()>=2):
var pfrom = path[path.size()-1]
var pto = path[path.size()-2]
var d = pfrom.distance_to(pto)
if (d<=to_walk):
path.remove(path.size()-1)
to_walk-=d
else:
path[path.size()-1] = pfrom.linear_interpolate(pto,to_walk/d)
to_walk=0
var atpos = path[path.size()-1]
get_node("agent").set_pos(atpos)
if (path.size()<2):
path=[]
set_process(false)
else:
set_process(false)
func _update_path():
var p = get_simple_path(begin,end,true)
path=Array(p) # Vector2array to complex to use, convert to regular array
path.invert()
set_process(true)
func _input(ev):
if (ev.type==InputEvent.MOUSE_BUTTON and ev.pressed and ev.button_index==1):
begin=get_node("agent").get_pos()
#mouse to local navigatio cooards
end=ev.pos - get_pos()
_update_path()
func _ready():
# Initialization here
set_process_input(true)
pass