Factorio Forums

Posted: **Sat Jan 11, 2025 12:56 am**

Related thread: viewtopic.php?f=23&t=87600

A bug arises if a slider is set to be from discrete values, set to a min, min + 1 range, and then set again to a larger min/max.

The initial "Not a bug" behavior seems sensible, but the new bug is that setting it back to discrete stepping doesn't work, and save-load stability.

Example code:
Step 1:

Code: Select all

/c
local player = game.player
local gui = player.gui
local center = gui.center
if center.f then
  center.f.destroy()
  return
end
local frame = center.add{type = "frame", name = "f"}
local style = frame.style
style.height = 200
style.width = 200
local slider = frame.add{type = "slider", name = "slider", minimum_value = 1, maximum_value = 10}

Slider discretely slides as intended.
Step 2:

Code: Select all

/c
local slider = game.player.gui.center.f.children[1]
slider.set_slider_minimum_maximum(4, 5)

The slider becomes a "small step" slider. If more changes are mod without saving, there is a hidden state, visible below. If the game is saved and loaded here, the discrete value step is ~~saved to the game~~ probably assigned on load, as if it were set through code.

Step 3:

Code: Select all

/c
local slider = game.player.gui.center.f.children[1]
slider.set_slider_minimum_maximum(1, 10)

The slider is at small steps, which may be expected. However, this is not save-load stable, and the slider switches to discrete stepping after loading.

Optional 4:

Code: Select all

/c
local slider = game.player.gui.center.f.children[1]
slider.set_slider_discrete_values(true)
slider.set_slider_value_step(1)

When the slider is doing small-steps, it won't switch back to discrete stepping.

Documented for posterity, I am not personally affected by this.

Factorio Forums

[2.0.28] discrete steps on a modded slider don't re-gain control

[2.0.28] discrete steps on a modded slider don't re-gain control