Lecture: Creating Tetris in Java

Introduction

• Presenter: RyiSnow
• Project: Create Tetris in Java
• Purpose: Simplify project size after a large previous project
• Audience: Previous tutorial followers or new viewers to RyiSnow
• Video Goal: Share creation process and allow viewers to follow along

Initial Setup

Project Structure

• Project Name: Simple Tetris
• Package & Class: Create a class inside the package

Window Creation

• Java Class: JFrame
• Window Properties:
  • Title set
  • Default close operation for proper discard
  • Non-resizable window
  • Centered on screen
  • Visible set to true

Game Panel

Class Creation

• Class Name: GamePanel (extends JPanel)
• Dimensions: 1280 x 720
• Background Color: Black (modifiable)
• Layout: Custom layout (no preset)

Integration

• Add GamePanel to JFrame using add and pack

Game Loop

Purpose & Setup

• Updates screen at regular intervals (60 FPS)
• Uses a Thread with Runnable interface
• Methods: update, draw

Functionality

• Updates object positions and scores
• Draws objects and UI
• Game loop typed without detailed explanation

PlayManager Class

Gameplay Elements

• Main Functions: Draw UI, set tetrominoes
• Main Area: Centered; 360 width x 600 height
• Block Size: 30 pixels (12x20 grid)

Constructor & Methods

• Calculate left, right, top, and bottom boundaries
• Include methods for drawing and updating

Tetrominoes Creation

Mino Package

• Class Block: Represents single Tetris block
  • Properties: x, y, size (30), color
  • Draw Method: Block with specified color

Mino Super Class

• Responsibility: Superclass for all tetromino shapes
• Methods: Create, set XY, updateXY

Tetromino Shapes

• Seven Classes: L1, L2, T, Bar, Square, Z1, Z2
• Specific Example: L1_Mino setup
  • Orientation: Four possible directions
  • Rotation: Using temp arrays to manage collision

PlayManager Enhancements

Random Mino Selection

• Method to pick a random mino from seven types

Collision Handling

• Movement: Check for left, right, bottom collisions
• Rotation: Ensure no collisions during rotation

Game Mechanics

• Auto Drop: Adds to autoDropCounter and checks intervals
• Keyboard Inputs: WASD for movement, rotation
• Pause Functionality: Managed via space key

Additional Features

Game Over Implementation

• Based on mino’s movement ability
• Display game over text and manage game state

Score & Level

• Score calculated based on lines cleared
• Level progression increases drop speed

Sound & Effects

• Background music and sound effects added
• Utilizes Clip and URL for audio management

Conclusion

• Game Completion: Includes basic mechanics and functionalities
• Further Exploration: Encourage viewers to modify and extend the game