抢凳子：音乐一停见真章

fx-chairs

local MusicalChairs = {}
local KEY = { RUSH_SPD = 260 }

local guests, chairs = {}, {}
local round = 0

function MC.Knock()
    if SL:GetValue("phase") ~= "circle" then return end
    SL:SetValue("phase", "rush")
    SL:PlaySfx("music_stop")
    -- 全员锁定最近空凳: 先到先得
    for _, g in ipairs(guests) do
        if g.alive then
            local best, bd = nil, 1e9
            for _, c in ipairs(chairs) do
                if not c.taken then
                    local d = math.sqrt((c.x - g.x) ^ 2 + (c.y - g.y) ^ 2)
                    if d < bd then bd = d; best = c end
                end
            end
            if best then
                g.targetX, g.targetY = best.x, best.y
                best.taken = true          -- 凳子预锁定
            else
                g.out = true               -- 没抢到凳的out
            end
        end
    end
end

function MC.Tick(dt)
    if SL:GetValue("phase") ~= "rush" then return end
    local settled, alive = 0, 0
    for _, g in ipairs(guests) do
        if g.alive then
            alive = alive + 1
            if g.out or g.seated then
                if g.out then settled = settled + 1 end
            else
                local dx = g.targetX - g.x
                local dy = g.targetY - g.y
                local d = math.sqrt(dx * dx + dy * dy)
                if d < 6 then
                    g.seated = true
                    settled = settled + 1
                else
                    g.x = g.x + dx / d * KEY.RUSH_SPD * dt
                    g.y = g.y + dy / d * KEY.RUSH_SPD * dt
                end
            end
        end
    end
    if settled >= alive then
        MC.Eliminate()
    end
end

function MC.Eliminate()
    for _, g in ipairs(guests) do
        if g.alive and g.out then
            g.alive = false
            SL:PlayFxAt("player_out", g.x, g.y)
        end
    end
    round = round + 1
    local alive = 0
    for _, g in ipairs(guests) do if g.alive then alive = alive + 1 end end
    if alive <= 1 then
        SL:ShowSystemTips("冠军诞生!")
        SL:SetValue("phase", "over")
    else
        SL:ScheduleOnce(function()
            MC.Rebuild()
            SL:SetValue("phase", "circle")
        end, 1.2)
    end
end

return MC