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The Attribute System example project is included to demonstrate the practical use of UMAS in both Blueprint and Data-Driven workflows. It is intentionally simple, clean, and easy to extend.

Everything is located under: 
Content/AttributeSystem/

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📁 Folder Structure

Here is the exact structure from your project: 
AttributeSystem/
 ├── Blueprints/
 │    ├── Examples/
 │    │    └── BP_TestBoxes.uasset
 │    ├── GM_Sandbox_Attributes.uasset
 │    └── PC_Sandbox_Attributes.uasset
 │
 ├── CBP_SandboxCharacter_Attrubutes.uasset
 │
 ├── CurveTables/
 │    ├── CT_AttributeAmounts.uasset
 │    ├── CT_AttributeCost.uasset
 │    ├── CT_AttributeCost_B.uasset
 │
 ├── Data/
 │    ├── DA_Agility.uasset
 │    ├── DA_CurrentHealth.uasset
 │    ├── DA_CurrentHunger.uasset
 │    ├── DA_CurrentStamina.uasset
 │    ├── ... many more Attribute Definitions ...
 │    ├── DE_HealthBuff.uasset
 │
 ├── IMC_Sandbox_Attributes.uasset
 │
 ├── LevelLinks/
 │    └── LL_Strength.uasset
 │
 ├── Map/
 │    └── DemoMap_Attributes.umap
 │
 └── UI/
      ├── Textures/
      │    ├── Icon_MinusSign.uasset
      │    └── Icon_PlusSign.uasset
      ├── WBP_AttributeAmount.uasset
      ├── WBP_AttributeAmountMax.uasset
      ├── WBP_AttributeBar.uasset
      ├── WBP_AttributePanel.uasset
      ├── WBP_HealthBar.uasset
      └── WBP_HUD.uasset

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🧩 Folder-by-Folder Explanation

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📘 Blueprints /

This folder contains all Blueprint logic for the example project.

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Key files:

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GM_Sandbox_Attributes

Example GameMode enabling the attribute sandbox functionality.

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PC_Sandbox_Attributes

PlayerController handling input and UI toggles.

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Examples/BP_TestBoxes

A set of interactable boxes used in the demo map to show:
  • Increase Attribute
  • Decrease Attribute
  • Apply Buff
  • Apply Effect
  • Show event-driven UI updates
These are the “test stations” players walk up to in the demo.

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CBP_SandboxCharacter_Attrubutes.uasset

The main example character.
Demonstrates:
  • AttributeManagerComponent setup
  • Profile assignment
  • Damage / healing
  • Attribute event binding
  • Integration with HUD
This is the most important example asset.

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📈 CurveTables /

UMAS uses curves to demonstrate:
  • Attribute amount progression
  • Attribute cost scaling
  • Multiple versions of cost curves
Included:
  • CT_AttributeAmounts
  • CT_AttributeCost
  • CT_AttributeCost_B
These drive the example leveling + cost demonstrations.

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📦 Data /

This is the heart of the example project:
The Attribute Definitions & Effects.

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Attribute Definitions

Every attribute is a separate .uasset:
  • Agility
  • Health
  • Hunger
  • Stamina
  • Strength
  • Defense
  • Etc.
These files demonstrate:
  • Base / max values
  • Regen settings
  • Progression setups
  • Tags for filtering
  • Consistent naming conventions

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Effects

DE_HealthBuff.uasset Shows how to:
  • Define a buff
  • Add magnitude
  • Set duration
  • Apply via Blueprint
  • Trigger UI and event changes

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🔗 LevelLinks /

Contains link definition assets such as:
  • LL_Strength.uasset
This asset demonstrates:
  • 1 Strength → increases another attribute
  • Automatic stat scaling
  • Real-time updating when strength changes
This is how RPG stat systems are built.

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🗺 Map /

Contains your example level:

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DemoMap_Attributes.umap

This is the sandbox environment. Features include:
  • Test boxes for modifying attributes
  • HUD elements showing real-time updates
  • Example character spawn
  • Debug widgets
  • Interactable objects for applying effects
  • Simple layout to stay readable
Users load this map to test everything.

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🖥 UI /

All UI/UMG examples:

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Key Widgets:

  • WBP_AttributeBar – single-bar UI example
  • WBP_AttributeAmount – value display
  • WBP_AttributeAmountMax – current/max format
  • WBP_AttributePanel – full stat list
  • WBP_HealthBar – example health bar
  • WBP_HUD – hooked to SandboxCharacter

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Textures:

  • Plus/minus icons used for UI buttons or indicators
These widgets demonstrate:
  • How to bind attribute value updates
  • How to react to OnAttributeChanged events
  • How to structure scalable UI
  • How to use multiple attributes in one display

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🎮 How to Run the Example Project

  1. Open DemoMap_Attributes.umap
  2. Press Play
  3. Use example character + controller
  4. Interact with the test boxes
  5. Watch the HUD update
  6. Apply buffs/debuffs
  7. Trigger leveling events
  8. Inspect the values in UI and debug displays
It is designed to be extremely easy to explore and reverse engineer.

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🎯 Purpose of the Example

This example project is meant to:
  • Show best practices
  • Provide clean Blueprint templates
  • Demonstrate how to set up data assets
  • Show UI patterns
  • Provide test stations for sandbox experimentation
  • Offer a complete minimal-profile setup
It is a technical learning project, not a content demo.