Gameplay Objects and Parameters

All parameters should be exposed via Primary Data Assets and/or UPROPERTY(EditDefaultsOnly) for designer tuning.

Character (APlatformCharacter)

• Movement
  • WalkSpeed: 600 uu/s (range 500–700)
  • SprintSpeed: 900 uu/s (range 800–1000)
  • AirControl: 0.5 (range 0.2–0.8)
  • JumpMaxCount: 2 (double jump)
  • GravityScale: 1.0 (range 0.9–1.3)
• Camera (UCameraComponent via SpringArm)
  • TargetArmLength: 450 (range 350–600)
  • bUsePawnControlRotation: false
  • LagSpeed: 12.0; RotationLagSpeed: 10.0 (lower=snappier)
  • FOV: 90 (range 80–100)
• Input (Enhanced Input)
  • Move: Axis2D (WASD/Stick)
  • Look: Axis2D (Mouse/RightStick)
  • Jump: Action (Press to Jump, Hold optional)
  • Interact: Action (E / X)
  • Sprint: Action (Toggle/Hold)

Interaction System

• Trace: Sphere, Radius 60 (range 40–80), Range 250 (range 200–350), Channel Visibility or custom Interactable
• UI Prompt: "{Verb} {Name}", show/hide on focus; 0.1s fade

Enemy (AEnemyNPC)

• Perception: Sight 1800/2200, FOV 60 deg (increase for outdoor spaces)
• Combat: AttackRange 200 (melee), Cooldown 1.2s, Damage 15
• Movement: Optional patrol points, AcceptanceRadius 60

Friendly NPC (AFriendlyNPC)

• Verb: Talk; DisplayName: e.g., Guide; DialogLines: array; CanTrade: false

Interactive Object (AInteractiveActor)

• DisplayName; Verb; Cooldown 0.5s; OneShot true/false
• Effects: ApplyStatDelta; GrantTag; TriggerEvent (ID)

Interactive Event (ATriggerEventActor)

• Trigger: Box/Sphere/Capsule; Pawn-only; Repeatable false
• Payload: Event ID (FName), Parameters (map), Delay 0.0

Stats (UStatsComponent)

• HealthMax 100; StaminaMax 100; Regen 10/s (delay 1.0s); Armor 0; OnDeath delegate

Damage/Hit Reactions

• DamageType: Melee/Ranged/Environmental; HitPause 0.05s; Knockback configurable

Save/Load (stretch)

• Save slots; player stats; one-shot interactable toggles.

Rationale

• Keep movement and camera responsive; tune lag and FOV for readability.
• Use sphere trace for forgiving interactions; prompts must be unambiguous.
• Enemy perception ranges should allow reaction time; telegraph attacks where possible.
• Data-drive everything configurable to enable fast iteration without recompiles.