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A simple Tetris clone written in Java
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Zed | |
8000 | |
Fred | |
5000 | |
Head | |
3000 | |
Bed | |
2000 | |
Ded | |
1000 |
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// Tetris.java | |
// | |
// Written in 2013 by Johannes Holzfuß <[email protected]> | |
// | |
// To the extent possible under law, the author(s) have dedicated all copyright | |
// and related and neighboring rights to this software to the public domain | |
// worldwide. This software is distributed without any warranty. | |
// | |
// You should have received a copy of the CC0 Public Domain Dedication along | |
// with this software. If not, see | |
// <http://creativecommons.org/publicdomain/zero/1.0/>. | |
import java.awt.Color; | |
import java.awt.Graphics; | |
import java.awt.Point; | |
import java.awt.event.ActionEvent; | |
import java.awt.event.ActionListener; | |
import java.awt.event.KeyEvent; | |
import java.awt.event.KeyListener; | |
import java.io.BufferedReader; | |
import java.io.FileReader; | |
import java.io.FileWriter; | |
import java.io.IOException; | |
//import java.io.PrintStream; | |
import java.util.ArrayList; | |
//import java.util.Arrays; | |
import java.util.Collections; | |
import java.util.concurrent.TimeUnit; | |
import javax.swing.JButton; | |
import javax.swing.JFrame; | |
import javax.swing.JLabel; | |
import javax.swing.JPanel; | |
public class Tetris extends JPanel { | |
private static final long serialVersionUID = -8715353373678321308L; | |
private final Point[][][] Tetraminos = { | |
// I-Piece | |
{ | |
{ new Point(0, 1), new Point(1, 1), new Point(2, 1), new Point(3, 1) }, | |
{ new Point(1, 0), new Point(1, 1), new Point(1, 2), new Point(1, 3) }, | |
{ new Point(0, 1), new Point(1, 1), new Point(2, 1), new Point(3, 1) }, | |
{ new Point(1, 0), new Point(1, 1), new Point(1, 2), new Point(1, 3) } | |
}, | |
// L-Piece | |
{ | |
{ new Point(0, 1), new Point(1, 1), new Point(2, 1), new Point(2, 0) }, | |
{ new Point(1, 0), new Point(1, 1), new Point(1, 2), new Point(2, 2) }, | |
{ new Point(0, 1), new Point(1, 1), new Point(2, 1), new Point(0, 2) }, | |
{ new Point(1, 0), new Point(1, 1), new Point(1, 2), new Point(0, 0) } | |
}, | |
// J-Piece (changed rotation order so it would start facing up rather than down) | |
{ | |
{ new Point(0, 1), new Point(1, 1), new Point(2, 1), new Point(0, 0) }, //3 | |
{ new Point(1, 0), new Point(1, 1), new Point(1, 2), new Point(2, 0) }, //4 | |
{ new Point(0, 1), new Point(1, 1), new Point(2, 1), new Point(2, 2) }, //1 | |
{ new Point(1, 0), new Point(1, 1), new Point(1, 2), new Point(0, 2) } //2 | |
}, | |
// O-Piece | |
{ | |
{ new Point(0, 0), new Point(0, 1), new Point(1, 0), new Point(1, 1) }, | |
{ new Point(0, 0), new Point(0, 1), new Point(1, 0), new Point(1, 1) }, | |
{ new Point(0, 0), new Point(0, 1), new Point(1, 0), new Point(1, 1) }, | |
{ new Point(0, 0), new Point(0, 1), new Point(1, 0), new Point(1, 1) } | |
}, | |
// S-Piece | |
{ | |
{ new Point(1, 0), new Point(2, 0), new Point(0, 1), new Point(1, 1) }, | |
{ new Point(0, 0), new Point(0, 1), new Point(1, 1), new Point(1, 2) }, | |
{ new Point(1, 0), new Point(2, 0), new Point(0, 1), new Point(1, 1) }, | |
{ new Point(0, 0), new Point(0, 1), new Point(1, 1), new Point(1, 2) } | |
}, | |
// T-Piece | |
{ | |
{ new Point(1, 0), new Point(0, 1), new Point(1, 1), new Point(2, 1) }, | |
{ new Point(1, 0), new Point(0, 1), new Point(1, 1), new Point(1, 2) }, | |
{ new Point(0, 1), new Point(1, 1), new Point(2, 1), new Point(1, 2) }, | |
{ new Point(1, 0), new Point(1, 1), new Point(2, 1), new Point(1, 2) } | |
}, | |
// Z-Piece | |
{ | |
{ new Point(0, 0), new Point(1, 0), new Point(1, 1), new Point(2, 1) }, | |
{ new Point(1, 0), new Point(0, 1), new Point(1, 1), new Point(0, 2) }, | |
{ new Point(0, 0), new Point(1, 0), new Point(1, 1), new Point(2, 1) }, | |
{ new Point(1, 0), new Point(0, 1), new Point(1, 1), new Point(0, 2) } | |
} | |
}; | |
//Note: Switched colors of J and L to reflect tetris standard | |
private final Color[] tetraminoColors = { | |
Color.cyan, Color.orange, Color.blue, Color.yellow, Color.green, Color.pink, Color.red | |
}; | |
private Point pieceOrigin; | |
private int currentPiece; | |
private boolean swapped = false; | |
private boolean gameOver = false; | |
private boolean keepPlaying = true; | |
private boolean added = false; | |
private static int storedPiece = -1; | |
private static int tempPiece = -1; | |
private int rotation; | |
private ArrayList<Integer> nextPieces = new ArrayList<Integer>(); | |
private int score; | |
private int phase = 1; | |
private int timeDec = 200; | |
private Color[][] well; | |
private static JFrame f; | |
private static JFrame endGame; | |
private static JLabel endGameText; | |
private static JButton newGame; | |
private static JButton exit; | |
private static BufferedReader inputFile; | |
private static FileWriter writeFile; | |
private static int lowestScore; | |
private static int sleepTime = 1000; | |
private static String endGameString; | |
// Creates a border around the well and initializes the dropping piece | |
private void init() { | |
well = new Color[12][25]; | |
for (int i = 0; i < 12; i++) { | |
for (int j = 0; j < 24; j++) { | |
if (i == 0 || i == 11 || j == 23 || j == 0) { | |
well[i][j] = Color.GRAY; | |
} else { | |
well[i][j] = Color.BLACK; | |
} | |
} | |
} | |
newPiece(); | |
} | |
//resets the game world | |
private void restart() | |
{ | |
//reset score and level variables | |
added = false; | |
endGame.setVisible(false); | |
gameOver = false; | |
phase = 1; | |
timeDec = 200; | |
sleepTime = 1000; | |
storedPiece = -1; | |
score = 0; | |
//clear the game board | |
for (int j = 22; j > 0; j--) | |
{ | |
for(int i = 1; i < 11; i++) | |
{ | |
well[i][j] = Color.BLACK; | |
} | |
} | |
newPiece(); | |
repaint(); | |
} | |
// Put a new, random piece into the dropping position | |
public void newPiece() { | |
pieceOrigin = new Point(5, 1); | |
rotation = 0; | |
//Game Over Code | |
if(collidesAt(5, 1, 0)) | |
{ | |
gameOver = true; | |
} else | |
{ | |
if (nextPieces.isEmpty()) { | |
Collections.addAll(nextPieces, 0, 1, 2, 3, 4, 5, 6); | |
Collections.shuffle(nextPieces); | |
} | |
currentPiece = nextPieces.get(0); | |
nextPieces.remove(0); | |
} | |
} | |
//Put a predetermined piece into the starting position | |
public void newPiece(int piece) { | |
pieceOrigin = new Point(5, 1); | |
rotation = 0; | |
//Game Over Code | |
if(collidesAt(5, 1, 0)) | |
{ | |
gameOver = true; | |
} | |
currentPiece = piece; | |
} | |
// Collision test for the dropping piece | |
private boolean collidesAt(int x, int y, int rotation) { | |
for (Point p : Tetraminos[currentPiece][rotation]) { | |
if (well[p.x + x][p.y + y] != Color.BLACK) { | |
return true; | |
} | |
} | |
return false; | |
} | |
// Rotate the piece clockwise or counterclockwise | |
public void rotate(int i) { | |
int newRotation = (rotation + i) % 4; | |
if (newRotation < 0) { | |
newRotation = 3; | |
} | |
if (!collidesAt(pieceOrigin.x, pieceOrigin.y, newRotation)) { | |
rotation = newRotation; | |
} | |
repaint(); | |
} | |
// Move the piece left or right | |
public void move(int i) { | |
if (!collidesAt(pieceOrigin.x + i, pieceOrigin.y, rotation)) { | |
pieceOrigin.x += i; | |
} | |
repaint(); | |
} | |
// Drops the piece one line or fixes it to the well if it can't drop | |
public void dropDown() { | |
if (!collidesAt(pieceOrigin.x, pieceOrigin.y + 1, rotation)) { | |
pieceOrigin.y += 1; | |
} else { | |
fixToWell(); | |
} | |
repaint(); | |
} | |
/* | |
* Drops the piece down until it collides. Only used if space is pressed. | |
* Player is awarded two bonus points for every row the piece drops | |
*/ | |
public void dropToBottom() | |
{ | |
//while it can drop down, drops down. | |
while(!collidesAt(pieceOrigin.x, pieceOrigin.y + 1, rotation)) | |
{ | |
score += 2; | |
pieceOrigin.y += 1; | |
} | |
fixToWell(); | |
repaint(); | |
} | |
// Make the dropping piece part of the well, so it is available for | |
// collision detection. | |
public void fixToWell() { | |
for (Point p : Tetraminos[currentPiece][rotation]) { | |
well[pieceOrigin.x + p.x][pieceOrigin.y + p.y] = tetraminoColors[currentPiece]; | |
} | |
swapped = false; | |
clearRows(); | |
newPiece(); | |
} | |
public void deleteRow(int row) { | |
for (int j = row-1; j > 0; j--) { | |
for (int i = 1; i < 11; i++) { | |
well[i][j+1] = well[i][j]; | |
} | |
} | |
} | |
// Clear completed rows from the field and award score according to | |
// the number of simultaneously cleared rows. | |
public void clearRows() | |
{ | |
boolean gap; | |
int numClears = 0; | |
for (int j = 22; j > 0; j--) { | |
gap = false; | |
for (int i = 1; i < 11; i++) { | |
if (well[i][j] == Color.BLACK) { | |
gap = true; | |
break; | |
} | |
} | |
if (!gap) { | |
deleteRow(j); | |
j += 1; | |
numClears += 1; | |
} | |
} | |
switch (numClears) | |
{ | |
case 1: | |
score += 100; | |
break; | |
case 2: | |
score += 300; | |
break; | |
case 3: | |
score += 500; | |
break; | |
case 4: | |
score += 800; | |
break; | |
} | |
//CODE FOR DIFFICULTY UPDATING | |
//decrements length of time the game sleeps between dropdowns every 1000 points earned | |
if(score >= 1000 * phase) | |
{ | |
//prevents timeDec from going to zero and breaking game - if the current tick time is | |
//less than or equal to twice the timeDec value, timeDec is divided by 2 | |
//Should scale infinitely | |
if(sleepTime <= (2 * timeDec)) | |
{ | |
timeDec /= 2; | |
} | |
sleepTime -= timeDec; | |
phase++; | |
} | |
} | |
// Draw the falling piece | |
private void drawPiece(Graphics g) { | |
g.setColor(tetraminoColors[currentPiece]); | |
for (Point p : Tetraminos[currentPiece][rotation]) | |
{ | |
g.fillRect((p.x + pieceOrigin.x) * 26, (p.y + pieceOrigin.y) * 26 + 60, 25, 25); | |
} | |
} | |
// Returns the standard letter representation for a tetramino | |
public String getPieceName(int num) | |
{ | |
String returnString = null; | |
if(num == -1) | |
{ | |
returnString = "None"; | |
} else if (storedPiece == 0) | |
{ | |
returnString = "I"; | |
} else if (storedPiece == 1) | |
{ | |
returnString = "L"; | |
} else if (storedPiece == 2) | |
{ | |
returnString = "J"; | |
} else if (storedPiece == 3) | |
{ | |
returnString = "O"; | |
} else if (storedPiece == 4) | |
{ | |
returnString = "S"; | |
} else if (storedPiece == 5) | |
{ | |
returnString = "T"; | |
} else if (storedPiece == 6) | |
{ | |
returnString = "Z"; | |
} | |
return returnString; | |
} | |
@Override | |
public void paintComponent(Graphics g) | |
{ | |
String storedPieceName = null; | |
// Paint the well | |
//Note: Edited to leave blank space at top for scoring data | |
g.fillRect(0, 0, 26*12, 26*24 + 60); | |
for (int i = 0; i < 12; i++) { | |
for (int j = 0; j < 24; j++) { | |
g.setColor(well[i][j]); | |
g.fillRect(26*i, 26*j + 60, 25, 25); | |
} | |
} | |
// Display the score | |
g.setColor(Color.WHITE); | |
g.drawString("Score: " + score, 20, 35); | |
//Display the current phase/level | |
g.setColor(Color.WHITE); | |
g.drawString("Level: " + phase, 120, 35); | |
//Display the currently stored piece | |
g.setColor(Color.WHITE); | |
storedPieceName = getPieceName(storedPiece); | |
g.drawString("Stored: " + storedPieceName, 220, 35); | |
//Draw the currently falling piece | |
drawPiece(g); | |
} | |
public static void main(String[] args) throws IOException | |
{ | |
//Get scores from the high score file | |
String[] storeScores = new String[10]; | |
//Read data from the file and transfer it into an array for storage | |
inputFile = new BufferedReader(new FileReader("src/highscores.txt")); | |
String line = inputFile.readLine(); | |
int lineNum = 0; | |
//Copies high-score information from file and into an array | |
while(line != null) | |
{ | |
storeScores[lineNum] = line; | |
line = inputFile.readLine(); | |
lineNum++; | |
} | |
lowestScore = Integer.parseInt(storeScores[9]); | |
//JFrame Initialization | |
f = new JFrame("Tetris"); | |
endGame = new JFrame("Game Over"); | |
endGame.setLayout(null); | |
endGame.setSize(12*26+15, 300); | |
endGame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); | |
newGame = new JButton(); | |
newGame.setText("Play Again"); | |
exit = new JButton(); | |
exit.setText("<html>Exit and Save Scores<html>"); | |
endGameText = new JLabel(); | |
endGameText.setSize(500, 100); //200 25 | |
endGameText.setLocation(90, 160); //90 160 | |
newGame.setSize(100, 100); | |
newGame.setLocation(50, 50); | |
newGame.setBackground(Color.GREEN); | |
exit.setSize(100, 100); | |
exit.setLocation((100 + 62), 50); | |
exit.setBackground(Color.RED); | |
endGame.add(newGame); | |
endGame.add(exit); | |
endGame.add(endGameText); | |
endGame.getContentPane().setBackground(Color.BLACK); | |
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); | |
f.setSize(12*26+15, 26*24+38 + 60); | |
f.setVisible(true); | |
final Tetris game = new Tetris(); | |
game.init(); | |
f.add(game); | |
// Keyboard controls | |
f.addKeyListener(new KeyListener() | |
{ | |
public void keyTyped(KeyEvent e) | |
{ | |
} | |
public void keyPressed(KeyEvent e) | |
{ | |
switch (e.getKeyCode()) | |
{ | |
case KeyEvent.VK_UP: | |
game.rotate(+1); | |
break; | |
//Note: Drop down has been switched to the down arrow key. | |
case KeyEvent.VK_DOWN: | |
game.dropDown(); | |
game.score += 1; | |
break; | |
case KeyEvent.VK_LEFT: | |
game.move(-1); | |
break; | |
case KeyEvent.VK_RIGHT: | |
game.move(+1); | |
break; | |
/* | |
* Space bar is used for a Hard Drop - Piece instantly moves to the bottom of | |
* the screen. This awards 2 points for every row dropped. | |
*/ | |
case KeyEvent.VK_SPACE: | |
game.dropToBottom(); | |
break; | |
/* | |
* Stored Piece Code | |
* On pressing c, the currently dropping piece should be | |
* stored and be replaced by the piece previously in storage. The game only | |
* permits "swapping" once per drop, unless the player is storing a piece for | |
* the first time. | |
*/ | |
case KeyEvent.VK_C: | |
/* | |
* If no piece has been stored yet, store the current piece and drop a new | |
* randomly selected piece | |
*/ | |
if(storedPiece == -1) | |
{ | |
storedPiece = game.currentPiece; | |
game.repaint(); | |
game.newPiece(); | |
} else | |
{ | |
/* | |
* If player has not already swapped this drop, swaps current | |
* and stored pieces and sets game.swapped to true | |
*/ | |
if(game.swapped == false) | |
{ | |
tempPiece = game.currentPiece; | |
game.newPiece(storedPiece); | |
storedPiece = tempPiece; | |
game.swapped = true; | |
game.repaint(); | |
} | |
//If player has already swapped this drop, do nothing | |
} | |
break; | |
} | |
} | |
public void keyReleased(KeyEvent e) | |
{ | |
} | |
} | |
); | |
//Modified dropdown iterator code, removed threads | |
while(game.keepPlaying) | |
{ | |
while(game.gameOver == false) | |
{ | |
try { | |
TimeUnit.MILLISECONDS.sleep(sleepTime); | |
} catch (InterruptedException e1) { | |
// TODO Auto-generated catch block | |
e1.printStackTrace(); | |
} | |
game.dropDown(); | |
} | |
//GAME OVER CODE | |
//check to see if the player scored higher than the lowest scoring entry | |
if(game.score > lowestScore) | |
{ | |
int currentScore = 0; | |
int i = 9; | |
while (game.added == false) | |
{ | |
currentScore = Integer.parseInt(storeScores[i]); | |
//System.out.println("current Score: "+ currentScore); | |
//if player's score is the new highest score | |
if(i == 1) | |
{ | |
game.added = true; | |
storeScores[i] = Integer.toString(game.score); | |
storeScores[i - 1] = "Player"; | |
//if player's score belongs in the middle of the scores | |
} | |
if(game.score <= currentScore) | |
{ | |
//System.out.println("Found where it belongs"); | |
game.added = true; | |
storeScores[i + 2] = Integer.toString(game.score); | |
storeScores[i + 1] = "Player"; | |
//System.out.println("Added: " + Arrays.toString(storeScores)); | |
//otherwise, shift the array down one | |
} | |
if(game.score > currentScore && game.added == false) | |
{ | |
//System.out.println("Too small, shift down: "); | |
storeScores[i] = storeScores[i - 2]; | |
storeScores[i - 1] = storeScores[i - 3]; | |
//System.out.println("Updated: " + Arrays.toString(storeScores)); | |
} | |
i = i - 2; | |
} | |
lowestScore = Integer.parseInt(storeScores[9]); | |
} | |
endGameString = "<html><pre>"; | |
for(int i = 0; i < 10; i = i + 2) | |
{ | |
endGameString = endGameString + storeScores[i]; | |
endGameString = endGameString + "	"; | |
endGameString = endGameString + storeScores[i + 1] + "<BR>"; | |
} | |
endGameString = endGameString + "</pre></html>"; | |
endGameText.setText(endGameString); | |
endGame.setVisible(true); | |
newGame.addActionListener(new ActionListener() | |
{ | |
@Override | |
public void actionPerformed(ActionEvent e) | |
{ | |
game.restart(); | |
} | |
}); | |
exit.addActionListener(new ActionListener() | |
{ | |
@Override | |
public void actionPerformed(ActionEvent e) | |
{ | |
game.keepPlaying = false; | |
} | |
}); | |
} | |
//Exit game code | |
endGame.dispose(); | |
f.dispose(); | |
inputFile.close(); | |
//write new high scores to file | |
writeFile = new FileWriter("src/highscores.txt"); | |
for(int i = 0; i < storeScores.length; i++) | |
{ | |
if (i < storeScores.length - 1) | |
{ | |
writeFile.write(storeScores[i] + "\n"); | |
} else | |
{ | |
writeFile.write(storeScores[i]); | |
} | |
} | |
writeFile.close(); | |
} | |
} | |
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