Button Click zindex issue

10/09/2021 08:57
Title: button click zindex issue
Reproduction Rate: 100%
Blocker? No
Details: I am working on a windowing system in lua and found that when two buttons are on top of each other, the button on the bottom of the draw order gets the click instead of the button on top. If one of the buttons is clicked in an area that does not overlap, the clicks work as desired. This issue happens for both the click and repeat.
Steps to Reproduce: create two buttons that overlap and have them show different text when clicked. If the user clicks where two buttons overlap, the button that is drawn first (and further away from the user) will receive the click instead of the button that is on top and closer to the user. The button that is closer to the user should receive the click when clicking an area where two buttons overlap.
User Specs:
OS: Windows 10 (10.0.0) 64bit
CPU: Intel(R) Core(TM) i5-4590 CPU @ 3.30GHz (4) System RAM: 16295
GPU: NVIDIA GeForce GTX 1050 GPU RAM: 1977
SotA.QA.Win.64.1264.Date.10.06.21
Area: POT_forest_metropolis_02_template/Maiden's Blush
Area Display Name: Maiden's Blush
Loc: (-247.2, 44.0, -197.3)
Debug: UE9UX2ZvcmVzdF9tZXRyb3BvbGlzXzAyX3RlbXBsYXRlfE1haWRlbidzIEJsdXNofCgtMjQ3LjIwNiwgNDQuMDAxLCAtMTk3LjMyNCl8KDAsIC0wLjc2MywgMCwgLTAuNjQ3KXw5OS40MDYyfDEwfDQuNjc2NTA4

Code:

local tex = nil
local client_width = 0
local client_height = 0
function ShroudOnStart()
    tex = ShroudLoadTexture("tiny.png", true)
    client_width = ShroudGetScreenX()
    client_height = ShroudGetScreenY()
end
function ShroudOnConsoleInput(type, src, msg) end
function ShroudOnGUI()
    if ShroudButton(client_width/2 - 50 , client_height/2 - 100, 200, 200, tex, "Click me 1!", "Test 1") == true then
        ConsoleLog("Button 1 clicked!")
    end
    if ShroudButton(client_width/2 - 100 , client_height/2 - 100, 200, 200, tex, "Click me 2!", "Test 2") == true then
        ConsoleLog("Button 2 clicked!")
    end
end
function ShroudOnUpdate() end

 

just a little extra comment. it would be nice for it to work exactly as expected but if that is too difficult then having both clicks fire in the situation where they are overlapping would work as well. in that situation leave it to the Lua programmer to determine which click should be actually recognized. i already have this built-in to what i am working on and is how i discovered this issue.