Improvements to stationary unit logic

Author: Starkku

CREDITS.md

@@ -161,7 +161,7 @@ This page lists all the individual contributions to the project by their author.
   - Warhead shield penetration & breaking
   - Strafing aircraft weapon customization
   - Vehicle `DeployFire` fixes/improvements
-  - Stationary VehicleTypes
+  - Stationary units
   - Burst logic improvements
   - TechnoType auto-firing weapons
   - Secondary weapon fallback customization

Phobos.vcxproj

@@ -166,7 +166,7 @@
     <ClCompile Include="src\Ext\TerrainType\Hooks.cpp" />
     <ClCompile Include="src\Ext\TerrainType\Hooks.Passable.cpp" />
     <ClCompile Include="src\Ext\Unit\Hooks.DeployFire.cpp" />
-    <ClCompile Include="src\Ext\Unit\Hooks.DisallowMoving.cpp" />
+    <ClCompile Include="src\Ext\Techno\Hooks.DisallowMoving.cpp" />
     <ClCompile Include="src\Ext\Unit\Hooks.DeploysInto.cpp" />
     <ClCompile Include="src\Ext\Unit\Hooks.Jumpjet.cpp" />
     <ClCompile Include="src\Ext\WarheadType\Detonate.cpp" />

docs/Fixed-or-Improved-Logics.md

@@ -250,7 +250,6 @@ This page describes all ingame logics that are fixed or improved in Phobos witho
 - Fixed the bug that Locomotor warhead won't stop working when firer (except for vehicle) stop firing.
 - Fixed the bug that hover vehicle will sink if destroyed on bridge.
 - Fixed the fact that when the selected unit is in a rearmed state, it can unconditionally use attack mouse on the target.
-- When `Speed=0` or the TechnoTypes cell cannot move due to `MovementRestrictedTo`, vehicles cannot attack targets beyond the weapon's range. `Area Guard` and `Hunt` missions will also become ineffective.
 - Fixed an issue that barrel anim data will be incorrectly overwritten by turret anim data if the techno's section exists in the map file.
 - Fixed pathfinding crashes (EIP 0x42A525, 0x42C507, 0x42C554) that happened on bigger maps due to too small pathfinding node buffer.
 - `IsSimpleDeployer` `BalloonHover=true` units with `DeployToLand=false` are no longer forced to land when hovering.
@@ -1811,6 +1810,14 @@ In `rulesmd.ini`:
 RadarInvisibleToHouse=               ; Affected House Enumeration (none|owner/self|allies/ally|team|enemies/enemy|all), default to enemy if RadarInvisible=true, none otherwise
 ```
 
+### Stationary units
+
+- Infantry & vehicles with `Speed=0` or those that are prevented from moving on their cell by `MovementRestrictedTo` are now truly stationary will not attempt to move if issued movement commands. Should not be used on trainable/buildable units as they become stuck in factory. Following behaviours apply:
+  - Cannot retaliate if target is beyond their weapon range.
+  - Cannot acquire units outside their weapon range on `Area Guard` mission.
+  - `Hunt` mission is reassigned to `Guard`.
+  - Units rendered stationary by speed multipliers instead of intrinsic properties of TechnoType will respond to cursor actions e.g assigning destination but will not move while the multiplier is in effect.
+
 ### Subterranean unit travel height and speed
 
 - It is now possible to control the height at which units with subterranean (Tunnel) `Locomotor` travel, globally or per TechnoType.
@@ -2238,10 +2245,6 @@ SinkSpeed=5                ; integer, leptons per frame
 Sinkable.SquidGrab=true    ; boolean
 ```
 
-### Stationary vehicles
-
-- Setting VehicleType `Speed` to 0 now makes game treat them as stationary, behaving in very similar manner to deployed vehicles with `IsSimpleDeployer` set to true. Should not be used on buildable vehicles, as they won't be able to exit factories.
-
 ### Turret recoil
 
 - Now you can use `TurretRecoil` to control units' turret/barrel recoil effect when firing.

docs/New-or-Enhanced-Logics.md

@@ -2270,7 +2270,7 @@ JumpjetTilt.SidewaysSpeedFactor=1.0     ; floating point value
 ### Turret Response
 
 - When the vehicle loses its target, you can customize whether to align the turret direction with the vehicle body.
-  - When `Speed=0` or TechnoTypes cells cannot move due to `MovementRestrictedTo`, the default value is no; in other cases, it is yes.
+  - If VehicleType has `Speed=0` or `MovementRestrictedTo` prevents it from moving on the cell, the default value is no; in other cases, it is yes.
 
 In `rulesmd.ini`:
 ```ini

docs/Whats-New.md

@@ -542,6 +542,7 @@ New:
 - Allow jumpjet climbing ignore building height (by TaranDahl)
 - [Allow draw SuperWeapon timer as percentage](User-Interface.md#allow-draw-superweapon-timer-as-percentage) (by NetsuNegi)
 - Customize particle system of parasite logic (by NetsuNegi)
+- [Improvements to stationary unit logic](Fixed-or-Improved-Logics.md#stationary-units) (by Starkku)
 
 Vanilla fixes:
 - Fixed sidebar not updating queued unit numbers when adding or removing units when the production is on hold (by CrimRecya)

src/Ext/Script/Mission.Attack.cpp

@@ -235,15 +235,11 @@ void ScriptExt::Mission_Attack(TeamClass* pTeam, int calcThreatMode, bool repeat
 							continue;
 						}
 
-						const auto whatAmI = pFoot->WhatAmI();
-
-						// If the vehicle cannot be moved, perhaps it is better this way.
-						if (whatAmI == AbstractType::Unit
-							&& TechnoExt::CannotMove(static_cast<UnitClass*>(pFoot))
-							&& !pFoot->IsCloseEnough(pSelectedTarget, pFoot->SelectWeapon(pSelectedTarget)))
-						{
+						// If the unit cannot be moved, perhaps it is better this way.
+						if (TechnoExt::CannotMove(pFoot, true) && !pFoot->IsCloseEnough(pSelectedTarget, pFoot->SelectWeapon(pSelectedTarget)))
 							continue;
-						}
+
+						const auto whatAmI = pFoot->WhatAmI();
 
 						// Aircraft hack. I hate how this game auto-manages the aircraft missions.
 						if (whatAmI == AbstractType::Aircraft

src/Ext/Techno/Body.cpp

@@ -747,28 +747,34 @@ bool TechnoExt::IsHealthInThreshold(TechnoClass* pObject, double min, double max
 	return (hp > 0 ? hp > min : hp >= min) && hp <= max;
 }
 
-bool TechnoExt::CannotMove(UnitClass* pThis)
+bool TechnoExt::CannotMove(FootClass* pThis, bool checkSpeedMultiplier)
 {
-	const auto pType = pThis->Type;
+	const auto pType = pThis->GetTechnoType();
 
 	if (pType->Speed == 0)
 		return true;
 
-	const auto movementRestrictedTo = pType->MovementRestrictedTo;
-
-	if (movementRestrictedTo == LandType::None)
-		return false;
+	if (checkSpeedMultiplier && TechnoExt::GetCurrentSpeedMultiplier(pThis) <= 0.0)
+		return true;
 
 	auto landType = pThis->GetCell()->LandType;
 
-	if (landType == LandType::Tunnel)
+	if (landType == LandType::Tunnel && pType->Locomotor != LocomotionClass::CLSIDs::Jumpjet)
 		return false;
 
-	if (pThis->OnBridge && (landType == LandType::Water || landType == LandType::Beach))
-		landType = LandType::Road;
+	if (pThis->WhatAmI() == AbstractType::Unit)
+	{
+		const auto movementRestrictedTo = static_cast<UnitTypeClass*>(pType)->MovementRestrictedTo;
 
-	if (movementRestrictedTo != landType)
-		return true;
+		if (movementRestrictedTo == LandType::None)
+			return false;
+
+		if (!pThis->OnBridge && (landType == LandType::Water || landType == LandType::Beach))
+			landType = LandType::Road;
+
+		if (movementRestrictedTo != landType)
+			return true;
+	}
 
 	return false;
 }

src/Ext/Techno/Body.h

@@ -289,7 +289,7 @@ class TechnoExt
 	static bool IsVeterancyInThreshold(TechnoClass* pObject, double min, double max);
 	static UnitTypeClass* GetUnitTypeExtra(UnitClass* pUnit, TechnoTypeExt::ExtData* pData);
 	static AircraftTypeClass* GetAircraftTypeExtra(AircraftClass* pAircraft);
-	static bool CannotMove(UnitClass* pThis);
+	static bool CannotMove(FootClass* pThis, bool checkSpeedMultiplier);
 	static bool HasAmmoToDeploy(TechnoClass* pThis);
 	static void HandleOnDeployAmmoChange(TechnoClass* pThis, int maxAmmoOverride = -1);
 	static bool SimpleDeployerAllowedToDeploy(UnitClass* pThis, bool defaultValue, bool alwaysCheckLandTypes);