Stack Bump 3D

🎱 Kinetic Impact and Collision Filtering

Stack Bump 3D inverts the formula of tower-fall games. Here, you navigate a ball forward along a horizontal plane, acting as a battering ram. The core mechanic relies on selective collision physics. The world is populated by two types of matter: White Objects (low mass, non-lethal, physics-enabled) and Black Objects (infinite mass, static, lethal).

The player's goal is to push through the white clutter to clear a path. The physics engine shines here, as the white blocks scatter realistically upon impact, often becoming projectiles themselves that can knock other objects aside. It is a game about managing chaos.

🧠 Spatial Prediction & Pathing

Navigating these chaotic fields requires:

• Trajectory Analysis: You must predict how a stack of white blocks will fall. Will they tumble forward and clear the path, or fall sideways and block you?
• Fine Motor Control: The ball moves constantly. The player controls lateral position. Subtle movements are required to "thread the needle" between black obstacles.
• Object Permanence: Understanding that the debris remains in the world. A scattered white block can push you into a black block if you aren't careful.

🎮 Gameplay Features

Key interaction models:

• The "Bump" Mechanic: The ball has high mass. When it hits white objects, it transfers momentum. Hitting the center of a stack transmits force efficiently; hitting the edge causes rotation.
• Level Progression: Levels introduce moving obstacles, rotating barriers, and narrow bridges, complicating the physics interactions.
• Invulnerability Phases: Similar to other arcade titles, certain power-ups or rapid combos may grant temporary immunity to black objects.

🏆 Pro Strategies

1. Use Debris as a Shield

You can use the white blocks as a buffer. By pushing a cluster of white blocks ahead of you, they can trigger traps or move other obstacles without risking your ball. You are essentially building a "snowplow" of debris.

2. Center Mass Hits

When approaching a tall tower of white blocks, aim for the dead center. This applies force evenly, causing the tower to explode outward. Hitting the side often causes the tower to tip over unpredictably, potentially trapping you.

🛡️ Engine Optimization

Technical details:

• Rigid Body Physics: Uses a standard Unity-style physics solver to calculate mass, drag, and friction for hundreds of objects simultaneously.
• Shadow Casting: Shadows provide critical depth cues, helping players judge the distance between the ball and floating obstacles.

❓ FAQ