-- manage clicks, since tic-80 only returns a "pressed" state

Input = {
    --- @type boolean
    lclick_prev_state = false,
    --- @type 'none'|'pressed'|'released'
    lclick_state = "none"
}

function Input.update_mouse(self)
    local x, y, left = mouse()
    -- left btn down
    if left then
        -- was not pressed before
        if not self.lclick_prev_state then
            self.lclick_state = "pressed"
            self.lclick_prev_state = true

            -- was already pressed
        elseif self.lclick_prev_state then
            self.lclick_state = "none"
        end
        -- left btn up
    elseif not left then
        if self.lclick_prev_state then
            self.lclick_state = "released"
            self.lclick_prev_state = false
        elseif not self.lclick_prev_state then
            self.lclick_state = "none"
        end
    end
end

function Input.mouse_pressed(self)
    return self.lclick_state == "pressed"
end

function Input.mouse_released(self)
    return self.lclick_state == "released"
end