初始化提交

Content/Lua/UI/GameUIHud.lua

@@ -0,0 +1,77 @@
+local Hud = {}
+local ESlateVisibility = import("ESlateVisibility")
+local WidgetBlueprintLibrary = import("WidgetBlueprintLibrary")
+local GameplayStatics = import("GameplayStatics")
+local BusyActorManagerSubSystem = import("BusyActorManagerSubSystem")
+
+
+local function ProcessSuspendShowRequests(hud)
+    for _, request in pairs(hud.suspend_show_requests) do
+        hud:CreateAndShowWidget(request[1], request[2])
+    end
+end
+
+
+
+function Hud:ctor()
+    self.layer = nil
+    self.suspend_show_requests = {}
+    self.widget_pool = {}
+end
+
+function Hud:ReceiveBeginPlay()
+    print("Hud:ReceiveBeginPlay")
+
+    if self.layer == nil then
+        self.layer = self:GetOrCreateWidget("UILayer")
+    end
+    if self.layer ~= nil then
+        self.layer:SetVisibility(ESlateVisibility.SelfHitTestInvisible)
+        self.layer:AddToViewport(0)
+        self:CreateAndShowWidget("MainUI", {})
+        ProcessSuspendShowRequests(self)
+    end
+end
+
+function Hud:ReceiveEndPlay()
+    print("Hud:ReceiveEndPlay")
+end
+
+
+function Hud:GetOrCreateWidget(widget_name)
+    local exist_widget = self.widget_pool[widget_name]
+    if exist_widget ~= nil and exist_widget.bSingletonInstance then
+        return exist_widget
+    end
+    local cls = self.UIClassMapping:Get(widget_name)
+    local pc = GameplayStatics.GetPlayerController(self, 0)
+    local widget = WidgetBlueprintLibrary.Create(self, cls, pc)
+    self.widget_pool[widget_name] = widget
+    return widget  -- TODO 这里如果非单例widget，会被覆盖
+end
+
+function Hud:GetFirstCachedWidget(widget_name)
+    return self.widget_pool[widget_name]
+end
+
+function Hud:CreateAndShowWidget(widget_name, args)
+    if not self.layer then
+        table.insert(self.suspend_show_requests, {widget_name, args})
+        return
+    end
+    local widget = self:GetOrCreateWidget(widget_name)
+    if not widget then return end
+    self.layer:ShowWidget(widget, args)
+end
+
+function Hud:CloseWidget(widget)
+    self.layer:CloseWidget(widget)
+end
+
+function Hud:HideWidgetByName(widget_name)
+    self.layer:HideWidget(self.widget_pool[widget_name])
+end
+
+
+
+return Class(nil, nil, Hud)