Game - Cube Collapse

A colour-match collapse puzzle built entirely from code. A 10x10x10 platform of cubes builds itself one layer at a time, clicking a cube clears every same-coloured cube connected to it, and what is left above drops into the gap. Shows how to structure a whole game without the editor: scene setup split from gameplay, a custom Bepu body that constrains cubes to their own column, screen-space text drawn without the UI system, and mouse picking through a physics raycast.

The Program.cs file shows how to:

• Structuring a code-only game into setup, components and scripts
• Constraining a Bepu body to one axis with a custom BodyComponent
• Locking rotation by zeroing the whole inverse inertia tensor
• Raising the solver substep count to settle a rotation-locked stack
• Picking entities with a camera raycast from the mouse
• Drawing screen-space text without the UI system: EntityTextComponent
• Flood filling a grid to find connected same-coloured neighbours
• Using helpers: Add3DCamera, Add3DGround, AddGizmo, Create3DPrimitive

View on GitHub.

using CubeCollapse;
using Stride.CommunityToolkit.Engine;
using Stride.Engine;

using var game = new Game();

var cubeCollapse = new CubeCollapseGame(game);

game.Run(start: cubeCollapse.Start, update: cubeCollapse.Update);