feat: deletion restrictions

Deleting an item now follows the item's DeletionRestrictions row (ItemComponent.delResIndex), as the client's LWOInventoryComponent_Common::CanRemoveFromInventory (0x00ce0d20) and CheckDeletionRestrictionIndex (0x00c94c20) do: an item the player is driving or riding can't be deleted, an operator can delete anything, and otherwise the row decides:
- LOTS_INCLUDED: only while the player has another item of any of the LOTs (the last rocket can't be deleted)
- LOTS_EXCLUDED: only while the player has other items of all of the LOTs
- ANY_RESTRICTION / ALL_RESTRICTIONS: any / all of the listed rows allow it (a row that names itself again allows it)
- ZONE: only in the listed zones
- ALWAYS_RESTRICTED: never
A missing, unrestricted or bad row (no valid ids, unknown check type) allows it. The client checks first and shows the row's failure reason; the server checks again and ignores a client's forceDeletion.

Refs issue 960

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/dGameTests/dComponentsTests/CMakeLists.txt

@@ -1,4 +1,5 @@
 set(DCOMPONENTS_TESTS
+	"DeletionRestrictionTests.cpp"
 	"DestroyableComponentTests.cpp"
 	"PetComponentTests.cpp"
 	"SimplePhysicsComponentTests.cpp"

tests/dGameTests/dComponentsTests/DeletionRestrictionTests.cpp

@@ -0,0 +1,84 @@
+#include "GameDependencies.h"
+
+#include "CDClientManager.h"
+#include "CDComponentsRegistryTable.h"
+#include "CDDeletionRestrictionsTable.h"
+#include "Entity.h"
+#include "eDeletionRestrictionsCheckType.h"
+#include "InventoryComponent.h"
+
+#include <gtest/gtest.h>
+
+// DeletionRestrictions rows as the client's LWOInventoryComponent_Common::CheckDeletionRestrictionIndex (0x00c94c20)
+// reads them. The test zone is map 1.
+class DeletionRestrictionTests : public GameDependenciesTest {
+protected:
+	std::unique_ptr<Entity> entity;
+	InventoryComponent* inventory{};
+
+	void SetUp() override {
+		SetUpDependencies();
+		CDClientManager::GetEntriesMutable<CDComponentsRegistryTable>().insert_or_assign(static_cast<uint64_t>(info.lot), 0);
+		entity = std::make_unique<Entity>(1, info);
+		inventory = entity->AddComponent<InventoryComponent>(-1);
+
+		using enum eDeletionRestrictionsCheckType;
+		Row(1, true, ALWAYS_RESTRICTED, {});
+		Row(2, false, ALWAYS_RESTRICTED, {});
+		Row(3, true, ZONE, { 1, 1100 });
+		Row(4, true, ZONE, { 1000 });
+		Row(5, true, ANY_RESTRICTION, { 1, 3 });
+		Row(6, true, ALL_RESTRICTIONS, { 1, 3 });
+		Row(7, true, ALL_RESTRICTIONS, { 3, 7 });
+		Row(8, true, ZONE, {});
+		Row(9, true, LOTS_INCLUDED, { 6416 });
+		Row(10, true, MAX, { 1 });
+	}
+
+	void TearDown() override {
+		CDClientManager::GetEntriesMutable<CDDeletionRestrictionsTable>().clear();
+		entity.reset();
+		TearDownDependencies();
+	}
+
+	static void Row(const uint32_t id, const bool restricted, const eDeletionRestrictionsCheckType checkType, const std::vector<uint32_t>& ids) {
+		CDClientManager::GetEntriesMutable<CDDeletionRestrictionsTable>().insert_or_assign(id, CDDeletionRestriction{ id, restricted, ids, checkType });
+	}
+
+	bool Allows(const uint32_t row) const {
+		std::set<uint32_t> checked;
+		return inventory->CheckDeletionRestriction(1234, row, checked);
+	}
+};
+
+TEST_F(DeletionRestrictionTests, AlwaysRestrictedOnlyWhenRestricted) {
+	EXPECT_FALSE(Allows(1));
+	EXPECT_TRUE(Allows(2));
+}
+
+TEST_F(DeletionRestrictionTests, ZoneAllowsOnlyInTheListedZones) {
+	EXPECT_TRUE(Allows(3));
+	EXPECT_FALSE(Allows(4));
+}
+
+TEST_F(DeletionRestrictionTests, AnyAndAllCombineOtherRows) {
+	EXPECT_TRUE(Allows(5));  // always restricted OR in zone 1
+	EXPECT_FALSE(Allows(6)); // always restricted AND in zone 1
+}
+
+TEST_F(DeletionRestrictionTests, ARowThatNamesItselfDoesNotLoop) {
+	EXPECT_TRUE(Allows(7));
+}
+
+TEST_F(DeletionRestrictionTests, MissingRowsAndBadRowsAllowIt) {
+	EXPECT_TRUE(Allows(99));
+	EXPECT_TRUE(Allows(8));  // no valid ids
+	EXPECT_TRUE(Allows(10)); // unknown check type
+}
+
+TEST_F(DeletionRestrictionTests, LotsIncludedNeedsAnotherItemOfThoseLots) {
+	// The player has no other rocket
+	EXPECT_FALSE(Allows(9));
+	EXPECT_FALSE(inventory->HasOtherItemsOfLots({ 6416 }, 1234, true));
+	EXPECT_FALSE(inventory->HasOtherItemsOfLots({ 6416, 4713 }, 1234, false));
+}