Door / Gate System

Mechanic governing door / gate system behavior, establishing rules for player interaction, feedback, and progression within this system.

Low complexity

2 examples

2 patterns

idle city-builder RPG flight-sim simulation social-deduction

Overview

Door / Gate System represents a design pattern that balances complexity with accessibility to engage diverse audiences. When well-implemented, this mechanic creates a satisfying feedback loop that keeps players engaged and motivated to continue playing. The ongoing evolution of this mechanic reflects the broader maturation of game design as a discipline.

Game Examples

Tycoon Games

Tycoon Games use this mechanic where players prioritize targets to collect all available items. The system tracks multiple variables simultaneously, resulting in meaningful player agency.

Asymmetric Games

Asymmetric Games use this mechanic where players react to emergent situations to collect all available items. Randomized elements ensure variety across sessions, resulting in satisfying progression.

Pros & Cons

Advantages

Integrates naturally with progression systems
Integrates naturally with economy systems
Provides clear contextual feedback on player actions
Adds immersion without excessive complexity
Enables mechanical player expression

Disadvantages

Requires significant server resources to implement well
May overwhelm returning players with too many options
May overwhelm new players with too many options
May reduce immersion if implemented poorly
Requires extensive balance testing to avoid edge cases

Implementation Patterns

Pathfinding Algorithm

Data-driven implementation that loads door / gate system configuration from external definitions.

class DoorGateSystemEngine {
  position = { x: 0, y: 0 };
  moveSpeed = 5.0;
  mode = "walking";

  update(input: Input, dt: number) {
    const speed = this.getSpeed();
    this.position.x += input.x * speed * dt;
    this.position.y += input.y * speed * dt;
  }

  getSpeed() {
    switch (this.mode) {
      case "sprinting": return this.moveSpeed * 1.8;
      case "crouching": return this.moveSpeed * 0.5;
      case "swimming": return this.moveSpeed * 0.7;
      default: return this.moveSpeed;
    }
  }
}

Physics Simulator

Event-driven pattern that reacts to door / gate system changes and updates dependent systems.

class DoorGateSystemController {
  coords = { x: 0, y: 0 };
  baseSpeed = 5.0;
  status = "idle";

  update(input: Input, dt: number) {
    const speed = this.getSpeed();
    this.coords.x += input.x * speed * dt;
    this.coords.y += input.y * speed * dt;
  }

  getSpeed() {
    switch (this.status) {
      case "sprinting": return this.baseSpeed * 2.0;
      case "crouching": return this.baseSpeed * 0.4;
      case "swimming": return this.baseSpeed * 0.7;
      default: return this.baseSpeed;
    }
  }
}