Add EmptyReload InfoType for digital display

CREDITS.md

@@ -932,5 +932,7 @@ This page lists all the individual contributions to the project by their author.
 - **Chang_zhi**:
   - Interop export interface for accessing scenario local/global variables
   - Add `ClampToScreen` tag for `BannerType` to control whether banner position is clamped to the visible area
+- **Nuke**:
+  - Reload speed adjustment on promotion
+  - New `InfoType=EmptyReload` for digital display
 - **obsidianus** - Automatic conversion based on health
-- **Nuke** - Reload speed adjustment on promotion

docs/User-Interface.md

@@ -120,6 +120,9 @@ The game first takes the absolute value of the difference between the actual cre
       - 1 - primary factory,
       - 2 - secondary factory.
       <br><br>
+    - `InfoType=EmptyReload` displays the empty reload timer while the Techno has no ammo left, and 0 otherwise.
+      If `EmptyReload` is not positive, the effective duration falls back to `Reload`.
+      <br><br>
   - `Anchor.Horizontal` and `Anchor.Vertical` set the anchor point from which the display is drawn (depending on `Align`) relative to unit's center/selection box. For buildings, `Anchor.Building` is used instead.
     - `Offset` and `Offset.ShieldDelta` (the latter applied when a shield is active) can be used to further modify the position.
   - By default, values are displayed in `current/maximum` format (i.e. `20/40`).
@@ -153,7 +156,7 @@ DigitalDisplay.Health.FakeAtDisguise=true      ; boolean
 
 [SOMEDIGITALDISPLAYTYPE]                       ; DigitalDisplayType
 ; Generic
-InfoType=Health                                ; Displayed value enumeration (Health|Shield|Ammo|Mindcontrol|Spawns|Passengers|Tiberium|Experience|Occupants|GattlingStage|ROF|Reload|SpawnTimer|GattlingTimer|ProduceCash|PassengerKill|AutoDeath|SuperWeapon|IronCurtain|TemporalLife|FactoryProcess)
+InfoType=Health                                ; Displayed value enumeration (Health|Shield|Ammo|Mindcontrol|Spawns|Passengers|Tiberium|Experience|Occupants|GattlingStage|ROF|Reload|SpawnTimer|GattlingTimer|ProduceCash|PassengerKill|AutoDeath|SuperWeapon|IronCurtain|TemporalLife|FactoryProcess|EmptyReload)
 InfoIndex=                                     ; integer
 Offset=0,0                                     ; integers - horizontal, vertical
 Offset.ShieldDelta=                            ; integers - horizontal, vertical

docs/Whats-New.md

@@ -419,6 +419,7 @@ HideShakeEffects=false           ; boolean
 :open:
 
 #### New:
+- [New `InfoType=EmptyReload` for digital display](User-Interface.md#digital-display) (by NukeAtty)
 - [Allow using waypoints, area guard and attack move with aircraft](Fixed-or-Improved-Logics.md#extended-aircraft-missions) (by CrimRecya)
 - [Enhanced Straight trajectory](New-or-Enhanced-Logics.md#straight-trajectory) (by CrimRecya)
 - [Enable building production queue](User-Interface.md#building-production-queue) (by CrimRecya)

src/Ext/Techno/Body.Visuals.cpp

@@ -624,6 +624,18 @@ void TechnoExt::GetValuesForDisplay(TechnoClass* pThis, TechnoTypeClass* pType,
 		maxValue = timer.TimeLeft ? timer.TimeLeft : ((pThis->Ammo || pType->EmptyReload <= 0) ? pType->Reload : pType->EmptyReload);
 		break;
 	}
+	case DisplayInfoType::EmptyReload:
+	{
+		if (pType->Ammo <= 0)
+			return;
+
+		const auto& timer = pThis->ReloadTimer;
+		value = (pThis->Ammo == 0) ? timer.GetTimeLeft() : 0;
+		maxValue = timer.TimeLeft
+			? timer.TimeLeft
+			: (pType->EmptyReload > 0 ? pType->EmptyReload : pType->Reload);
+		break;
+	}
 	case DisplayInfoType::SpawnTimer:
 	{
 		const auto pSpawnManager = pThis->SpawnManager;

src/Utilities/Enum.h

@@ -331,7 +331,8 @@ enum class DisplayInfoType : BYTE
 	SuperWeapon = 17,
 	IronCurtain = 18,
 	TemporalLife = 19,
-	FactoryProcess = 20
+	FactoryProcess = 20,
+	EmptyReload = 21
 };
 
 enum class DisplayShowType : unsigned char

src/Utilities/TemplateDef.h

@@ -1553,6 +1553,10 @@ if(_strcmpi(parser.value(), #name) == 0){ value = __uuidof(name ## LocomotionCla
 			{
 				value = DisplayInfoType::Reload;
 			}
+			else if (_strcmpi(str, "emptyreload") == 0)
+			{
+				value = DisplayInfoType::EmptyReload;
+			}
 			else if (_strcmpi(str, "spawntimer") == 0)
 			{
 				value = DisplayInfoType::SpawnTimer;