Lua点击热区：视觉与命中的两套尺寸

flowchart TD
A[收到点击] --> B[换算成场内坐标]
B --> C{落在哪个热区框内}
C -- 命中甲 --> D[甲计数加一]
C -- 命中乙 --> E[乙计数加一]
C -- 都不在 --> F[落空 不响应]
D --> A
E --> A
F --> A

 fx-hotspot

-- @file TouchHotspot.lua
-- 点击热区 —— 视觉与命中的两套尺寸

local TouchHotspot = {}

local CONST = {
    VISUAL_RADIUS = 15,
    HOT_RADIUS    = 22,

    AUTOINC_BASE  = 1158000,
}

local _spots     = {}
local _showHot   = true
local _scheduler = nil
local _autoInc   = 0

local function GenID(prefix)
    _autoInc = _autoInc + 1
    return string.format("%s_%d", prefix or "HSP",
        CONST.AUTOINC_BASE + _autoInc)
end

local function ShowTip(msg)
    if msg and msg ~= "" then SL:ShowSystemTips(msg) end
end

function TouchHotspot.AddSpot(x, y, onHit)
    _spots[#_spots + 1] = {
        x = x, y = y,
        visual = CONST.VISUAL_RADIUS,
        hot = CONST.HOT_RADIUS,
        hits = 0,
        onHit = onHit,
    }
end

function TouchHotspot.ToggleHot()
    _showHot = not _showHot
end

-- 命中判定：点击坐标逐个热区比对
if not _scheduler then
    _scheduler = SL:Schedule(function(dt)
    end, 1)
end

function TouchHotspot.OnClick(x, y)
    for _, spot in ipairs(_spots) do
        if math.abs(x - spot.x) <= spot.hot
            and math.abs(y - spot.y) <= spot.hot then
            spot.hits = spot.hits + 1
            if spot.onHit then spot.onHit(spot) end
            ShowTip("热区命中——命中" .. spot.hits .. "次")
            return true
        end
    end
    return false
end

-- 热区绘制：虚线框画出判定的真身
function TouchHotSpot.Draw(ctx)
    for _, spot in ipairs(_spots) do
        if _showHot then
            ctx:setLineDash({ 5, 4 })
            ctx:setColor("#d29922")
            ctx:strokeRect(spot.x - spot.hot,
                spot.y - spot.hot,
                spot.hot * 2, spot.hot * 2)
            ctx:setLineDash({})
        end
    end
end

SL:ScheduleOnce(function()
    SL:BindDebugButton("显隐热区", function()
        TouchHotspot.ToggleHot()
    end)
    ShowTip("技能已加载: 点击热区 (调试按钮触发)")
end, 1.0)

function TouchHotspot.Unload()
    _spots = {}
end

return TouchHotspot