地图编辑器「墙」全链路增强

经验 1：子编辑器"连续操作" vs "一次性操作"——提交后别清空激活态

lua
-- 墙体拖拽编辑.lua CommitWall 末尾
self:ResetDrag()
-- 保持 selectedItem 和 tool 不变，允许连续拖拽放置；右键由 Cancel 退出
self:RequestRebuild(context)
return true

经验 2：onClick 的 event 没有 StopPropagation（二次踩坑，必须入清单）

lua
-- 属性面板.lua 删除按钮
onClick = function(widget, event)
    if event and event.StopPropagation then   -- ✅ 存在性检查
        event:StopPropagation()
    end
    self.removeSelectedWall(context)           -- 守卫之后才能执行
end,
-- ❌ 错误写法：self:StopClickPropagation(widget, event) 在 onClick 里会崩

经验 3：拼接可能为 nil 的字段前先兜底

lua
-- 地图编辑模式.lua SelectWall
local ownerText = segment.roomId or "自由墙"
editorState_.status = (segment.isDoor and "已选中门：" or "已选中墙体：")
    .. ownerText .. " / " .. tostring(segment.side)

经验 4：自由墙删除走"整条 wallId"，房间墙不可逐段删

lua
-- 校园主地图.lua
function M.RemoveFreeWall(wallId)
    if not wallId or wallId == "" then return false end
    local walls = map.walls or {}
    for i = #walls, 1, -1 do
        if walls[i].id == wallId then
            table.remove(walls, i)
            return true
        end
    end
    return false
end

lua
-- 地图编辑模式.lua RemoveSelectedWall
local segment = editorState_.selectedWall
if not segment then ... return end
if segment.roomId then                       -- 房间墙：拒绝逐段删
    editorState_.status = "该墙体属于房间 " .. segment.roomId
        .. "，随房间整体生成。如需移除，请关闭房间的“启用墙体”。"
    return
end
if MapData.RemoveFreeWall(segment.wallId) then  -- 自由墙：整条删
    editorState_.selectedKind = nil
    editorState_.selectedWall = nil
    context.store.MarkDirty("mapEditorWallDelete")
end

经验 5：框选擦除子编辑器——照抄 FloorAreaEditor/WallDragEditor 契约

lua
-- 墙体框选擦除.lua 关键片段
function WallEraseEditor:IsActive() return self.editorState.tool == "erase_wall" end

function WallEraseEditor:HitTestFreeWalls(left, top, right, bottom)
    local hits = {}
    for i = 1, #(self.mapData.data.walls or {}) do
        local w = self.mapData.data.walls[i]
        if not w.broken then
            local x0, x1 = math.min(w.ax,w.bx), math.max(w.ax,w.bx)
            local y0, y1 = math.min(w.ay,w.by), math.max(w.ay,w.by)
            if not (x1 < left or x0 > right or y1 < top or y0 > bottom) then  -- AABB 相交
                hits[#hits + 1] = w.id
            end
        end
    end
    return hits
end

function WallEraseEditor:Commit(context)
    local left, top, right, bottom = self:GetRect()
    if not left then self:ResetDrag(); return false end
    local hits = self:HitTestFreeWalls(left, top, right, bottom)
    local count = 0
    for i = 1, #hits do
        if self.mapData.RemoveFreeWall(hits[i]) then count = count + 1 end
    end
    self:ResetDrag()               -- 保持 erase_wall 激活，可连续框选
    self:RequestRebuild(context)
    return true
end

1. require + 模块级 wallEraseEditor_ = nil
2. SelectPaletteItem 加 item.tool == "erase_wall" 路由
3. CreateCanvasWall 的 HandleClick 加 erase_wall 守卫（避免单段点击抢事件）
4. mapSurface onPointerDown：右键 Cancel 链 + 左键 HandlePointerDown
5. onPointerMove / onPointerUp / onPointerCancel 各加一行
6. mapSurface onClick 加 erase_wall 守卫
7. Create 实例化 + CreateMapCanvas 加 CreatePreview()

经验 6：编辑器能画 ≠ 运行时能画——两页渲染必须对齐

lua
-- 校园地图.lua 自由墙整条渲染（zIndex=2 压在地面上、物件/人物下；pointerEvents=none 不挡点击）
local function CreateFreeWallView(wall)
    if not wall or wall.broken then return nil end
    local x0, x1 = math.min(wall.ax, wall.bx), math.max(wall.ax, wall.bx)
    local y0, y1 = math.min(wall.ay, wall.by), math.max(wall.ay, wall.by)
    local style = wall.style or "普通墙"
    local color = style == "围墙" and {110,88,60,255}
        or style == "栅栏" and {120,150,95,230}
        or style == "破损墙" and {120,95,80,200}
        or {94,96,89,255}
    return UI.Panel {
        position = "absolute", left = x0*5, top = y0*5,
        width = math.max(5,(x1-x0+1)*5), height = math.max(5,(y1-y0+1)*5),
        backgroundColor = color, pointerEvents = "none", zIndex = 2,
    }
end
-- CreateMapView 内，地面之后、物件之前：
for i = 1, #(data.walls or {}) do
    local v = CreateFreeWallView(data.walls[i])
    if v then campusChildren[#campusChildren + 1] = v end
end

改动文件清单