DataTable driven item database: read stats from table

SETUP: 1. Create struct FItemData: {Name(Name), Damage(float), Icon(Texture2D), Description(Text)}. 2. Create DataTable with row type FItemData. Add rows (Sword, Bow, Staff...). READ: GetDataTableRow(Table=DT_Items, RowName='Sword') → Row Found exec → BreakFItemData(OutRow) → use Damage, Name, etc. DYNAMIC READ (from variable): SetVariable(CurrentItemName='Bow') → GetDataTableRow(RowName=CurrentItemName) → same flow. LIST ALL: GetDataTableRowNames → ForEachLoop → GetDataTableRow per name → display. Key: GetDataTableRow exec outs are 'Row Found' and 'Row Not Found' (NOT 'then').

Map

A key→value lookup table (dictionary). Faster than searching an Array when you need to look up by key.

DataTable

A spreadsheet-like asset holding rows of a struct type. Great for item catalogs, dialogue lines, level configs.

string

string

Physics Body

A SceneComponent with simulate-physics enabled. Driven by forces, gravity, collisions instead of explicit transforms.

Inventory system with array of structs for items

Pattern: Struct S_InventoryItem(ItemName:String, Quantity:int, Icon:Texture2D, bStackable:bool). Variable Inventory(Array<S_InventoryItem>). AddItem: ForEachLoop(Inventory) → Branch(Element.ItemName == NewItem.Name AND bStackable) → True: SET Element.Quantity += Amount. If not found: Array_Add(NewItem). RemoveItem: Find index → Branch(Quantity > 1) → True: decrement. False: Array_Remove.

Less (float) — A < B

GetDataTableRow asks for a row that doesn't exist

Why: Your code looks up '{row}' in a DataTable, but no row with that name is present in the DataTable asset. Fix: Open the DataTable asset in Content Browser. Check the row names in the Row Editor panel. Either: (a) add the missing '{row}' row manually, or (b) update the lookup to use an existing row name, or (c) wire a Get All Row Names → ForEachLoop instead of hardcoding the name.

Health and damage system with ApplyDamage and EventAnyDamage

Dealing damage: Event → ApplyDamage(TargetActor, BaseDamage, InstigatorController, DamageCauser, DamageTypeClass). Receiving: EventAnyDamage → Damage output → Subtract_FloatFloat(CurrentHealth, Damage) → FClamp(Result, 0, MaxHealth) → SET CurrentHealth → Branch(CurrentHealth <= 0) → True: DestroyActor. Initialize CurrentHealth=MaxHealth in BeginPlay.

GetPlayerCharacter — get player character by index

UGameplayStatics::GetPlayerCharacter.