68 lines
2.2 KiB
Lua
68 lines
2.2 KiB
Lua
 
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-- Patch: modules/slider.lua
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--
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-- The slider is genuinely generic: `modules/slider.lua` is a factory
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-- (`newSlider(params)`) and every quantity slider in the game comes from it.
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-- Four states use it:
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--
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-- craft -- how many items to process
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-- refine -- same
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-- trade -- how many to buy/sell
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-- ingame_wait -- how many turns to wait
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--
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-- So one wrapper on the factory narrates all four, with no per-state work. This
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-- is the same leverage as the console.print and inventoryCursorPopup patches.
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--
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-- NOTE: the options screens (config_menu / settings_menu) do NOT use this. They
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-- adjust values through config.increase / config.decrease instead, and are
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-- handled by accessibility/states/config_menu.lua.
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-- ORDERING: this replaces package.loaded, so it only affects requires that happen
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-- AFTER it runs. That is safe here because states are loaded lazily by states.lua
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-- (each `require("states/"..name)` happens on first switch), and these four are
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-- the only requirers. applyPatches() also runs before the self-test, which is the
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-- one thing that loads state files early.
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local speech = require("accessibility.speech")
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return function()
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local newSlider = require("modules.slider")
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if type(newSlider) ~= "function" then
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error("modules.slider is not a factory function -- game structure changed")
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end
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package.loaded["modules.slider"] = function(params)
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local slider = newSlider(params)
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local realSetValue = slider.setValue
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if not realSetValue then
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return slider
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end
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-- Announce only on an actual change. setValue is called during
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-- construction, on every frame of a mouse drag, and on each repeat of a
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-- held key -- speaking unconditionally would stutter badly.
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local lastSpoken = slider.currentValue
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slider.setValue = function(newValue, noFlip)
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local result = realSetValue(newValue, noFlip)
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pcall(function()
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local current = slider.currentValue
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if current == lastSpoken then
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return
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end
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lastSpoken = current
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-- Interrupt: the value is the answer to the key just pressed, and
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-- a backlog of intermediate numbers is worse than useless.
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speech.say(tostring(current), true)
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end)
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return result
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end
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return slider
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end
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end
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