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Add support for systems without mouse or keyboard #26

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Add support for systems without mouse or keyboard #26

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6 changes: 3 additions & 3 deletions baton.lua
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Original file line number Diff line number Diff line change
Expand Up @@ -66,19 +66,19 @@ local sourceFunction = {keyboardMouse = {}, joystick = {}}

-- checks whether a keyboard key is down or not
function sourceFunction.keyboardMouse.key(key)
return love.keyboard.isDown(key) and 1 or 0
return love.keyboard ~= nil and love.keyboard.isDown ~= nil and love.keyboard.isDown(key) and 1 or 0
end

-- checks whether a keyboard key is down or not,
-- but it takes a scancode as an input
function sourceFunction.keyboardMouse.sc(sc)
return love.keyboard.isScancodeDown(sc) and 1 or 0
return love.keyboard ~= nil and love.keyboard.isScancodeDown ~= nil and love.keyboard.isScancodeDown(sc) and 1 or 0
end

-- checks whether a mouse buttons is down or not.
-- note that baton doesn't detect mouse movement, just the buttons
function sourceFunction.keyboardMouse.mouse(button)
return love.mouse.isDown(tonumber(button)) and 1 or 0
return love.mouse ~= nil and love.mouse.isDown ~= nil and love.mouse.isDown(tonumber(button)) and 1 or 0
end

-- checks the position of a joystick axis
Expand Down