幸运套圈：扔出去的圈圈会说话

fx-ringtoss

local RingToss = {}
local CONST = { MSG_ID = 12240, KEY = "RingToss", LEFT_MAX = 5, GRAVITY = 500 }

function RingToss.OnToss(myID)
    if (RingToss._left or 0) <= 0 then
        SL:ShowSystemTips("圈用完了, 点重摆")
        return
    end
    RingToss._left = (RingToss._left or CONST.LEFT_MAX) - 1

    local r = {
        x = 120, y = 210,
        vx = 150 + math.random() * 60,                 -- 横向初速带扰动
        vy = -260,                                      -- 上抛分量
        spinning = true
    }
    table.insert(RingToss._rings, r)
    SL:SendLuaNetMsg(CONST.MSG_ID, 0, 0, 0,
        SL:JsonEncode({ key = CONST.KEY, op = 1, actorID = myID }))
end

function RingToss:UpdateRings(dt)
    for _, r in ipairs(self._rings) do
        if not r.landed then
            r.vy = r.vy + CONST.GRAVITY * dt            -- 重力累加
            r.x = r.x + r.vx * dt
            r.y = r.y + r.vy * dt
            if r.y >= GROUND_Y and r.vy > 0 then        -- 落地判定
                r.landed = true
                for pi, prize in ipairs(self._prizes) do
                    if math.abs(r.x - prize.x) < RING_RADIUS then
                        self:WinPrize(pi)               -- 套中!
                        break
                    end
                end
            end
        end
    end
end

return RingToss