接元宝：篮子一斜全泡汤

tray.x = tray.x + (lowest.x - tray.x) * math.min(1, dt * 5.5)

fx-catching

local Catching = {}
local KEY = { CATCH_Y = 0, TRAY_H = 96 }

function Catching.Step(dt)
    local trayX = SL:GetValue("trayX")
    local ingots = SL:GetValue("ingots")
    -- 追最低的
    local low, ly = nil, -1
    for _, g in ipairs(ingots) do
        if g.y > ly then ly = g.y; low = g end
    end
    if low then
        local k = math.min(1, dt * 5.5)
        SL:SetValue("trayX", trayX + (low.x - trayX) * k)
    end
    -- 接取判定: 托盘口高度带 + 横向重叠
    for i = #ingots, 1, -1 do
        local g = ingots[i]
        g.y = g.y + g.vy * dt
        if g.y > SL:GetValue("catchLine") and g.y < SL:GetValue("catchLine") + 22
           and math.abs(g.x - SL:GetValue("trayX")) < 56 then
            table.remove(ingots, i)
            local combo = SL:GetValue("combo") + 1
            SL:SetValue("combo", combo)
            SL:SetValue("caught", SL:GetValue("caught") + 1)
            SL:PlayBurst(g.x, SL:GetValue("catchLine"), "gold_spark", 6)
            SL:ShowTipAbove(g.x, "x" .. combo)
            SL:PlaySfx("catch", math.min(6, combo % 7))
        elseif g.y > SL:GetValue("height") + 14 then
            table.remove(ingots, i)
            SL:SetValue("combo", 0)
            SL:SetValue("misses", SL:GetValue("misses") + 1)
        end
    end
end

return Catching