Added empty lobby list text label and code to drive it's visibility (#567)

Author: pdeschain

Assets/BossRoom/Prefabs/UI/LobbyUI.prefab

@@ -2650,6 +2650,7 @@ RectTransform:
   m_LocalPosition: {x: 0, y: 0, z: 0}
   m_LocalScale: {x: 1, y: 1, z: 1}
   m_Children:
+  - {fileID: 5444621218174688333}
   - {fileID: 3902557823681792741}
   m_Father: {fileID: 5226752220064165541}
   m_RootOrder: 0
@@ -3164,6 +3165,140 @@ MonoBehaviour:
   m_FillOrigin: 0
   m_UseSpriteMesh: 0
   m_PixelsPerUnitMultiplier: 1
+--- !u!1 &5870055767430500199
+GameObject:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  serializedVersion: 6
+  m_Component:
+  - component: {fileID: 5444621218174688333}
+  - component: {fileID: 5318024624199095249}
+  - component: {fileID: 785373375347833033}
+  m_Layer: 5
+  m_Name: EmptyLobbyList (TMP)
+  m_TagString: Untagged
+  m_Icon: {fileID: 0}
+  m_NavMeshLayer: 0
+  m_StaticEditorFlags: 0
+  m_IsActive: 1
+--- !u!224 &5444621218174688333
+RectTransform:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 5870055767430500199}
+  m_LocalRotation: {x: -0, y: -0, z: -0, w: 1}
+  m_LocalPosition: {x: 0, y: 0, z: 0}
+  m_LocalScale: {x: 1, y: 1, z: 1}
+  m_Children: []
+  m_Father: {fileID: 9204749279882807884}
+  m_RootOrder: 0
+  m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
+  m_AnchorMin: {x: 0.5, y: 0.5}
+  m_AnchorMax: {x: 0.5, y: 0.5}
+  m_AnchoredPosition: {x: 0, y: -78}
+  m_SizeDelta: {x: 300, y: 50}
+  m_Pivot: {x: 0.5, y: 0.5}
+--- !u!222 &5318024624199095249
+CanvasRenderer:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 5870055767430500199}
+  m_CullTransparentMesh: 1
+--- !u!114 &785373375347833033
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 5870055767430500199}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: f4688fdb7df04437aeb418b961361dc5, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
+  m_Material: {fileID: 0}
+  m_Color: {r: 1, g: 1, b: 1, a: 1}
+  m_RaycastTarget: 0
+  m_RaycastPadding: {x: 0, y: 0, z: 0, w: 0}
+  m_Maskable: 1
+  m_OnCullStateChanged:
+    m_PersistentCalls:
+      m_Calls: []
+  m_text: no lobbies
+  m_isRightToLeft: 0
+  m_fontAsset: {fileID: 11400000, guid: 1a8c97d4cbe5134499b26527f8609c7e, type: 2}
+  m_sharedMaterial: {fileID: -466885322316925189, guid: 1a8c97d4cbe5134499b26527f8609c7e, type: 2}
+  m_fontSharedMaterials: []
+  m_fontMaterial: {fileID: 0}
+  m_fontMaterials: []
+  m_fontColor32:
+    serializedVersion: 2
+    rgba: 4294967295
+  m_fontColor: {r: 1, g: 1, b: 1, a: 1}
+  m_enableVertexGradient: 1
+  m_colorMode: 2
+  m_fontColorGradient:
+    topLeft: {r: 0.92156863, g: 1, b: 0.17254902, a: 1}
+    topRight: {r: 0.92156863, g: 1, b: 0.17254902, a: 1}
+    bottomLeft: {r: 1, g: 0.6666667, b: 0.078431375, a: 1}
+    bottomRight: {r: 1, g: 0.6666667, b: 0.078431375, a: 1}
+  m_fontColorGradientPreset: {fileID: 0}
+  m_spriteAsset: {fileID: 0}
+  m_tintAllSprites: 0
+  m_StyleSheet: {fileID: 0}
+  m_TextStyleHashCode: -1183493901
+  m_overrideHtmlColors: 1
+  m_faceColor:
+    serializedVersion: 2
+    rgba: 4294967295
+  m_fontSize: 34.3
+  m_fontSizeBase: 24
+  m_fontWeight: 400
+  m_enableAutoSizing: 1
+  m_fontSizeMin: 18
+  m_fontSizeMax: 34.3
+  m_fontStyle: 0
+  m_HorizontalAlignment: 2
+  m_VerticalAlignment: 512
+  m_textAlignment: 65535
+  m_characterSpacing: 0
+  m_wordSpacing: 0
+  m_lineSpacing: 0
+  m_lineSpacingMax: 0
+  m_paragraphSpacing: 0
+  m_charWidthMaxAdj: 0
+  m_enableWordWrapping: 1
+  m_wordWrappingRatios: 0.4
+  m_overflowMode: 0
+  m_linkedTextComponent: {fileID: 0}
+  parentLinkedComponent: {fileID: 0}
+  m_enableKerning: 1
+  m_enableExtraPadding: 0
+  checkPaddingRequired: 0
+  m_isRichText: 1
+  m_parseCtrlCharacters: 1
+  m_isOrthographic: 1
+  m_isCullingEnabled: 0
+  m_horizontalMapping: 0
+  m_verticalMapping: 0
+  m_uvLineOffset: 0
+  m_geometrySortingOrder: 0
+  m_IsTextObjectScaleStatic: 0
+  m_VertexBufferAutoSizeReduction: 1
+  m_useMaxVisibleDescender: 1
+  m_pageToDisplay: 1
+  m_margin: {x: 0, y: 0, z: 0, w: 0}
+  m_isUsingLegacyAnimationComponent: 0
+  m_isVolumetricText: 0
+  m_hasFontAssetChanged: 0
+  m_baseMaterial: {fileID: 0}
+  m_maskOffset: {x: 0, y: 0, z: 0, w: 0}
 --- !u!1 &5892968726015345847
 GameObject:
   m_ObjectHideFlags: 0
@@ -4056,6 +4191,7 @@ MonoBehaviour:
   m_LobbyListItemPrototype: {fileID: 6844302749700945984}
   m_JoinCodeField: {fileID: 8248007993983070476}
   m_CanvasGroup: {fileID: 5782144806807453527}
+  m_EmptyLobbyListLabel: {fileID: 785373375347833033}
 --- !u!225 &5782144806807453527
 CanvasGroup:
   m_ObjectHideFlags: 0
@@ -4162,7 +4298,7 @@ MonoBehaviour:
   m_faceColor:
     serializedVersion: 2
     rgba: 4294967295
-  m_fontSize: 33
+  m_fontSize: 20.3
   m_fontSizeBase: 36
   m_fontWeight: 400
   m_enableAutoSizing: 1
@@ -4324,7 +4460,7 @@ MonoBehaviour:
   m_TargetGraphic: {fileID: 6773627913577560496}
   m_HandleRect: {fileID: 2234904744820987572}
   m_Direction: 2
-  m_Value: 1
+  m_Value: 0
   m_Size: 1
   m_NumberOfSteps: 0
   m_OnValueChanged:
@@ -4361,7 +4497,7 @@ RectTransform:
   m_Children:
   - {fileID: 3632019498769524828}
   m_Father: {fileID: 9204749279882807884}
-  m_RootOrder: 0
+  m_RootOrder: 1
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
   m_AnchorMin: {x: 0, y: 1}
   m_AnchorMax: {x: 1, y: 1}
@@ -4969,7 +5105,7 @@ MonoBehaviour:
   m_faceColor:
     serializedVersion: 2
     rgba: 4294967295
-  m_fontSize: 33
+  m_fontSize: 20.3
   m_fontSizeBase: 36
   m_fontWeight: 400
   m_enableAutoSizing: 1

Assets/BossRoom/Scripts/Client/UI/Lobby/LobbyJoiningUI.cs

@@ -15,6 +15,8 @@ public class LobbyJoiningUI : MonoBehaviour
         [SerializeField] LobbyListItemUI m_LobbyListItemPrototype;
         [SerializeField] InputField m_JoinCodeField;
         [SerializeField] CanvasGroup m_CanvasGroup;
+        [SerializeField] Graphic m_EmptyLobbyListLabel;
+
         IInstanceResolver m_Container;
         LobbyUIMediator m_LobbyUIMediator;
         UpdateRunner m_UpdateRunner;
@@ -80,6 +82,15 @@ void UpdateUI(LobbyListFetchedMessage message)
                 var localLobby = message.LocalLobbies[i];
                 m_LobbyListItems[i].SetData(localLobby);
             }
+
+            if (message.LocalLobbies.Count == 0)
+            {
+                m_EmptyLobbyListLabel.enabled = true;
+            }
+            else
+            {
+                m_EmptyLobbyListLabel.enabled = false;
+            }
         }
 
         void EnsureNumberOfActiveUISlots(int requiredNumber)