The code from where I based my script.
The code I have has the these 2 problems:
The visual area for the player to see what unit are going to be selected doesn't work as intended, if I start dragging from left to right, and down, the selection area is drawn inverted. If I try to do the same but inverting the movement the selection area is drawn correctly.
The selection area and the units I want to select are not selected, or just selects just one, might have something to do with the problem above.
Something I have tried is the code alone in another scene, this baffles me because it works as intended, it doesn't have any one of the problem above!
The code:
extends Node2D
var dragging = false # are we currently dragging?
var selected_units = [] # array of selected units
var drag_start = Vector2.ZERO # location where the drag begian
var select_rect = RectangleShape2D.new()
const blue = Color(0.59, 0.86, 1.0,0.4)
var drag_end = Vector2.ZERO
var selected = 0
func _unhandled_input(event):
if event is InputEventMouseButton and event.button_index == BUTTON_LEFT:
# When the mouse button is pressed, then the dragging starts
if event.pressed:
if selected_units.size() == 0:
dragging = true
drag_start = event.position
else:
for unit in selected_units:
unit.collider._set_selected(false)
selected_units = []
dragging = true
drag_start = event.position
elif dragging:
dragging = false
drag_end = event.position
update()
drag_end = event.position
select_rect.extents = (drag_end - drag_start) / 2
var space = get_world_2d().direct_space_state
var query = Physics2DShapeQueryParameters.new()
query.collide_with_bodies = true
query.set_shape(select_rect)
query.transform = Transform2D(0, (drag_end + drag_start)/2)
selected_units = space.intersect_shape(query)
selected = selected_units.size()
for unit in selected_units:
unit.collider._set_selected(true)
if event is InputEventMouseMotion and dragging:
update()
func _draw():
if dragging:
draw_rect(Rect2(drag_start, get_global_mouse_position() - drag_start),
blue, true)
Not sure why is that happening, now I think this is the line where the problem lies:
query.transform = Transform2D(0, (drag_end + drag_start)/2)
Since it's not inverting the area where we are trying to get the units selected. not sure if did I missed something to configure elsewhere? why my code fails when it's in the main scene of my game but not on the test scene?
