Tetris X11

A small Tetris implementation in C++ using Xlib for rendering.

Features

• Game logic is separated from rendering:
  • game.h / game.cpp — board, pieces, rotations, collisions, line clearing, scoring, levels.
  • render.h / render.cpp — drawing with Xlib (board, pieces, next piece preview, side panel).
  • main.cpp — X11 initialization, main game loop, event handling.
• Supports:
  • score;
  • levels (fall speed increases with level);
  • next piece preview;
  • pause (button and P key);
  • hard drop with Space.

Controls

Keyboard:

• Left / Right — move piece horizontally.
• Up — rotate piece.
• Down — soft drop (faster fall).
• Space — hard drop (instant fall).
• P — pause / resume.
• R — restart after game over.
• Esc — quit.

Buttons on the right panel:

• Pause / Resume — pause / continue the game.
• Exit — quit the game.

Requirements

• C++17-compatible compiler or newer.
• X11 development headers:
  • On Debian/Ubuntu:

    sudo apt-get install libx11-dev

• CMake (the project is CMake-based).

Build and Run

 git clone [https://github.com/vimcomes/tetris_x11.git](https://github.com/vimcomes/tetris_x11.git) cd tetris_x11 mkdir build cd build cmake .. cmake --build . ./tetris

(The executable name may differ, check add_executable in CMakeLists.txt.)

Project Structure

• CMakeLists.txt — CMake configuration.
• main.cpp — entry point, event loop, timing.
• game.h / game.cpp — game logic:
  • Game::field board state,
  • pieces and rotations,
  • line clearing and scoring,
  • level system and fall interval.
• render.h / render.cpp — rendering:
  • board, grid, active piece,
  • next piece preview,
  • side panel with score, level and buttons.

Recent Changes

• Rendering: double-buffered Xlib drawing to avoid flicker; palette allocated via XAllocColor; ghost piece preview with toggle.
• Gameplay: lock delay when touching the stack (including hard drop), 7-bag randomizer, tunable drop speed per level.
• UX: dashed ghost outline, options section with checkbox, line-clear flash effect, improved multi-line scoring.
• Scoring: bonuses scale with cleared lines (1/2/3/4 → 100/300/700/1200 * level).

License

Not explicitly specified yet. If you use this code in your own projects, please link back to this repository.