bugfix(supply): Implement proportional supply bonus scaling

Signed-off-by: tintinhamans <5984296+tintinhamans@users.noreply.github.com>

Author: tintinhamans

GeneralsMD/Code/GameEngine/Include/GameLogic/Module/SupplyTruckAIUpdate.h

@@ -161,6 +161,8 @@ class SupplyTruckAIInterface
 	// who look this up by name.
 public:
 	virtual Int getNumberBoxes() const = 0;
+	// TheSuperHackers @refactor arcticdolphin 09/03/2026 Expose MaxBoxes for proportional supply bonus.
+	virtual Int getMaxBoxes() const = 0;
 	virtual Bool loseOneBox() = 0;
 	virtual Bool gainOneBox( Int remainingStock ) = 0;
 
@@ -197,6 +199,8 @@ class SupplyTruckAIUpdate : public AIUpdateInterface, public SupplyTruckAIInterf
 	virtual const SupplyTruckAIInterface* getSupplyTruckAIInterface() const {return this;}
 
 	virtual Int getNumberBoxes() const { return m_numberBoxes; }
+	// TheSuperHackers @refactor arcticdolphin 09/03/2026 Expose MaxBoxes for proportional supply bonus.
+	virtual Int getMaxBoxes() const { return getSupplyTruckAIUpdateModuleData()->m_maxBoxesData; }
 	virtual Bool loseOneBox();
 	virtual Bool gainOneBox( Int remainingStock );
 

GeneralsMD/Code/GameEngine/Include/GameLogic/Module/WorkerAIUpdate.h

@@ -180,6 +180,8 @@ class WorkerAIUpdate : public AIUpdateInterface, public DozerAIInterface, public
 
 // Supply truck stuff
 	virtual Int getNumberBoxes() const { return m_numberBoxes; }
+	// TheSuperHackers @refactor arcticdolphin 09/03/2026 Expose MaxBoxes for proportional supply bonus.
+	virtual Int getMaxBoxes() const { return getWorkerAIUpdateModuleData()->m_maxBoxesData; }
 	virtual Bool loseOneBox();
 	virtual Bool gainOneBox( Int remainingStock );
 

GeneralsMD/Code/GameEngine/Source/GameLogic/Object/Update/DockUpdate/SupplyCenterDockUpdate.cpp

@@ -95,12 +95,25 @@ Bool SupplyCenterDockUpdate::action( Object* docker, Object *drone )
 		return FALSE;
 
 	UnsignedInt value = 0;
+#if !RETAIL_COMPATIBLE_CRC
+	// TheSuperHackers @refactor arcticdolphin 09/03/2026 Snapshot box count before unload loop.
+	Int deliveredBoxes = supplyTruckAI->getNumberBoxes();
+#endif
 	Player *ownerPlayer = getObject()->getControllingPlayer();
 	while( supplyTruckAI->loseOneBox() )
 		value += ownerPlayer->getSupplyBoxValue();
 
 	// Add money boost from upgrades that give extra money
+#if !RETAIL_COMPATIBLE_CRC
+	// TheSuperHackers @bugfix arcticdolphin 09/03/2026 Scale supply bonus proportionally to delivered boxes.
+	Int upgradedSupplyBoost = supplyTruckAI->getUpgradedSupplyBoost();
+	if( upgradedSupplyBoost > 0 && deliveredBoxes > 0 )
+	{
+		value += upgradedSupplyBoost * deliveredBoxes / supplyTruckAI->getMaxBoxes(); // Intentional integer truncation.
+	}
+#else
 	value += supplyTruckAI->getUpgradedSupplyBoost();
+#endif
 
 	if( value > 0)
 	{