Allow other vehicles to attempt to move above the target like BalloonHover=yes

CREDITS.md

@@ -648,6 +648,7 @@ This page lists all the individual contributions to the project by their author.
   - Fix an issue where the vanilla script ignores jumpjets
   - CellSpread in cylinder shape
   - CellSpread damage check if victim is in air or on floor
+  - Allow other vehicles to attempt to move above the target like `BalloonHover=yes`
 - **solar-III (凤九歌)**
   - Target scanning delay customization (documentation)
   - Skip target scanning function calling for unarmed technos (documentation)

docs/Fixed-or-Improved-Logics.md

@@ -1941,6 +1941,18 @@ In `rulesmd.ini`:
 Harvester.CanGuardArea=no          ; boolean
 ```
 
+### Allow other vehicles to attempt to move above the target like `BalloonHover=yes`
+
+- In vanilla, vehicles with `BalloonHover=yes` and a weapon with projectile with `Vertical=yes` will attempt to move above the target.
+- Now you can make other vehicles do the same without `BalloonHover=yes`.
+  - A weapon with projectile with `Vertical=yes` is still needed.
+
+In `rulesmd.ini`:
+```ini
+[SOMEVEHICLE]                        ; VehicleType
+CanGoAboveTarget=false               ; boolean
+```
+
 ### Bunker entering check dehardcode
 
 - In vanilla, vehicles entering tank bunkers are subject to a series of hardcoding restrictions, including having to have turrets, having to have weapons, and not having Hover speed types. Now you can skip these restrictions.

docs/Whats-New.md

@@ -466,6 +466,7 @@ New:
 - [Customize type selection for IFV](Fixed-or-Improved-Logics.md#customize-type-selection-for-ifv) (by NetsuNegi)
 - CellSpread in cylinder shape (by TaranDahl)
 - CellSpread damage check if victim is in air or on floor (by TaranDahl)
+- Allow other vehicles to attempt to move above the target like `BalloonHover=yes` (by TaranDahl)
 
 Vanilla fixes:
 - Fixed sidebar not updating queued unit numbers when adding or removing units when the production is on hold (by CrimRecya)

src/Ext/TechnoType/Body.cpp

@@ -1035,6 +1035,8 @@ void TechnoTypeExt::ExtData::LoadFromINIFile(CCINIClass* const pINI)
 		Debug::Log("[Developer warning][%s] Ammo.AutoConvertMinimumAmount is greater than Ammo.AutoConvertMaximumAmount, resulting in no conversion.\n", pSection);
 
 	this->InfantryAutoDeploy.Read(exINI, pSection, "InfantryAutoDeploy");
+
+	this->CanGoAboveTarget.Read(exINI, pSection, "CanGoAboveTarget");
 
 	// Ares 0.2
 	this->RadarJamRadius.Read(exINI, pSection, "RadarJamRadius");
@@ -1698,6 +1700,8 @@ void TechnoTypeExt::ExtData::Serialize(T& Stm)
 		.Process(this->InfantryAutoDeploy)
 
 		.Process(this->TurretResponse)
+
+		.Process(this->CanGoAboveTarget)
 		;
 }
 void TechnoTypeExt::ExtData::LoadFromStream(PhobosStreamReader& Stm)

src/Ext/TechnoType/Body.h

@@ -445,6 +445,8 @@ class TechnoTypeExt
 
 		Nullable<bool> TurretResponse;
 
+		Valueable<bool> CanGoAboveTarget;
+
 		ExtData(TechnoTypeClass* OwnerObject) : Extension<TechnoTypeClass>(OwnerObject)
 			, HealthBar_Hide { false }
 			, HealthBar_HidePips { false }
@@ -840,6 +842,8 @@ class TechnoTypeExt
 			, InfantryAutoDeploy {}
 
 			, TurretResponse {}
+
+			, CanGoAboveTarget { false }
 		{ }
 
 		virtual ~ExtData() = default;

src/Ext/Unit/Hooks.Firing.cpp

@@ -160,3 +160,12 @@ DEFINE_HOOK(0x741A96, UnitClass_SetDestination_ResetFiringFrame, 0x6)
 
 	return 0;
 }
+
+DEFINE_HOOK(0x74159F, UnitClass_ApproachTarget_GoAboveTarget, 0x6)
+{
+	GET(UnitClass* const, pThis, ESI);
+	auto pType = pThis->Type;
+	auto pTypeExt = TechnoTypeExt::ExtMap.Find(pType);
+	R->AL(pType->BalloonHover || pTypeExt->CanGoAboveTarget);
+	return R->Origin() + 0x6;
+}