simonlc / tetr.js

🕹️ Tetris clone in HTML5 and JavaScript

Tetr.js

Default Controls:

Controls are configurable

• Rotate Left: Z
• Rotate Right: X
• Rotate 180: Shift
• Hold: C
• Hard Drop: Space
• Shift Left: Left Arrow
• Shift Right: Right Arrow
• Restart: R

mechanics and features

• Tetris Guideline compliant
  • Random generator, first bag never spawns Z, S, or O piece first.
  • SRS
  • Hold
  • Piece preview
  • Ghost piece
• Multiple block skins
• Stack outline option
• Configurable gravity
• 60 FPS
• DAS and DAS delay settings
• Adaptable game size
• Last game replay

tetr.js's Issues

I Ghost Piece is usually a step higher than it should be

This causes the I piece to be positioned a step higher when hard drop, so the player has to wait for the final drop.

Negative finesse?

On some piece drops the finesse count decreases, which sounds like something that shouldn't happen.

Steps to reproduce:

1. Set ARR to a nonzero value (e.g. 1).
2. Hold left in 40L mode.
3. Without letting go, hard drop a bunch of pieces.
4. The finesse counter will decrease by 1 or 2 for every piece that's dropped, resulting in something like -13 if you top out doing this.

Public Source Code

Timer goes too fast.

Some chrome update has made the 40 lines timer go far faster than normal, at least 50%