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

CREDITS.md

@@ -662,6 +662,7 @@ This page lists all the individual contributions to the project by their author.
   - Toggle per-target warhead effects apply timing
   - Extra range for chasing and pre-firing
   - Fix an issue that rockets do not consider the destination altitude during climbing
+  - 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

@@ -1974,6 +1974,18 @@ Harvester.CanGuardArea=false                ; boolean
 Harvester.CanGuardArea.RequireTarget=false  ; 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

@@ -480,6 +480,7 @@ New:
 - Allow techno type considered as other type when recruiting techno for teams (by NetsuNegi)
 - Map Action [`511` Undeploy Building to Waypoint](AI-Scripting-and-Mapping.md#undeploy-building-to-waypoint), [`609` Set Radar Mode](AI-Scripting-and-Mapping.md#set-radar-mode), [`610` Set house's `TeamDelays` value](AI-Scripting-and-Mapping.md#set-house-s-teamdelays-value) (by FlyStar)
 - Fixed an issue that rockets do not consider the destination altitude during climbing (by TaranDahl)
+- [Allow other vehicles to attempt to move above the target like `BalloonHover=yes`](Fixed-or-Improved-Logics.md#allow-other-vehicles-to-attempt-to-move-above-the-target-like-balloonhoveryes) (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

@@ -1115,6 +1115,8 @@ void TechnoTypeExt::ExtData::LoadFromINIFile(CCINIClass* const pINI)
 
 	this->TeamMember_ConsideredAs.Read(exINI, pSection, "TeamMember.ConsideredAs");
 
+	this->CanGoAboveTarget.Read(exINI, pSection, "CanGoAboveTarget");
+
 	// Ares 0.2
 	this->RadarJamRadius.Read(exINI, pSection, "RadarJamRadius");
 
@@ -1790,6 +1792,8 @@ void TechnoTypeExt::ExtData::Serialize(T& Stm)
 		.Process(this->TeamMember_ConsideredAs)
 
 		.Process(this->TurretResponse)
+
+		.Process(this->CanGoAboveTarget)
 		;
 }
 void TechnoTypeExt::ExtData::LoadFromStream(PhobosStreamReader& Stm)

src/Ext/TechnoType/Body.h

@@ -455,6 +455,8 @@ class TechnoTypeExt
 
 		Nullable<bool> TurretResponse;
 
+		Valueable<bool> CanGoAboveTarget;
+
 		ExtData(TechnoTypeClass* OwnerObject) : Extension<TechnoTypeClass>(OwnerObject)
 			, HealthBar_Hide { false }
 			, HealthBar_HidePips { false }
@@ -860,6 +862,8 @@ class TechnoTypeExt
 			, TeamMember_ConsideredAs {}
 
 			, 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;
+}