fix: mouseEvent accepts eventUsed but never checks or returns it

[TheCodingDad-TisonK]

Problem

The incomeMouseHandler in src/main.lua accepts eventUsed in its signature but does not check it before processing and does not return it.

Current code (src/main.lua ~line 81):

function incomeMouseHandler:mouseEvent(posX, posY, isDown, isUp, button, eventUsed)
    if im and im.incomeHUD then
        im.incomeHUD:onMouseEvent(posX, posY, isDown, isUp, button)
    end
end

The parameter is declared but silently ignored. This means:

1. Events already consumed by a vehicle camera or another listener still trigger HUD processing
2. When the HUD does consume an event, the flag is never passed back to the engine

Impact

In vehicles, the camera system consumes RMB events before mod listeners run. With no eventUsed guard, the income HUD can respond to those already-consumed events, potentially entering edit mode with a stale cursor position.

Fix

function incomeMouseHandler:mouseEvent(posX, posY, isDown, isUp, button, eventUsed)
    if not eventUsed and im and im.incomeHUD then
        eventUsed = im.incomeHUD:onMouseEvent(posX, posY, isDown, isUp, button, eventUsed) or eventUsed
    end
    return eventUsed
end

IncomeHUD:onMouseEvent also needs to accept eventUsed and return true when it consumes an event, false otherwise.

Use Input.MOUSE_BUTTON_RIGHT (= 3) and Input.MOUSE_BUTTON_LEFT (= 1) constants — confirmed in LUADOC.

Reference

Fixed in FS25_SoilFertilizer commit d5b8f31 (issue TheCodingDad-TisonK/FS25_SoilFertilizer#130).

[github-actions]

Hey @TheCodingDad-TisonK, thanks for opening this issue! 👋

@TheCodingDad-TisonK has been notified and will take a look as soon as possible.

While you wait, please double-check the following:

• You are running the latest version of Income Mod (visible in the mod manager)
• Your issue includes relevant lines from log.txt
  • Log location: Documents/My Games/FarmingSimulator2025/log.txt
  • Search for [Income Mod] — paste the relevant section in your issue
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