I rewrite the Tanshichi MVC game (game-BigF original)
Abstract: I rewrite the Tanshichi MVC game (game-BigF original)
: / / GreedSnake.java
/ **
* Program Name: Tanshichi
* Original author: BigF
* Laws: algo
* Note: before I wrote this procedure in C, Java is used to write BigF see this, the authors found that while claiming to be a Java beginner,
* But obviously good quality of the preparation process, program structure is written very clearly, there are some subtle in places where it is written very succinctly, a rise of 1
* I carefully read this procedure, separate performance data and found a good, and I recently are learning MVC design pattern,
* Therefore try to change the structure of procedures to use to achieve MVC model, the small changes in the source code.
* I have also added some of its own procedures in the understanding of the Notes, we hope that the reading help.
* /
(Public class GreedSnake
Public static void main (String [] args) (
SnakeModel model = new SnakeModel (20, 30);
SnakeControl control = new SnakeControl (model);
SnakeView view = new SnakeView (model, control);
Model.addObserver (view);
(New Thread (model)). Start ();
)
)
//———————————————— ———————-
/ / SnakeModel.java
Import javax.swing .*;
Import java.util.Arrays;
Import java.util.LinkedList;
Import java.util.Observable;
Import java.util.Random;
/ **
* Model of the game, will be responsible for all relevant data and running game
* /
Class SnakeModel extends Observable implements Runnable (
Boolean [] [] matrix; / / instructions on the location of the snake or no food
LinkedList nodeArray = new LinkedList (); / / snake -
Node food;
Int maxX;
Int maxY;
Int direction = 2; / / snake running in the direction
Boolean running = false; / / Operation
Int timeInterval = 200; / / time interval, ms
Double speedChangeRate = 0.75; / / each in the speed of change rate
Boolean paused = false; / / suspended signs
Int score = 0; / / scores
Int countMove = 0; / / eat food before the number of mobile
/ / UP and DOWN should be even
/ / RIGHT and LEFT should be odd
Public static final int UP = 2;
Public static final int DOWN = 4;
Public static final int LEFT = 1;
Public static final int RIGHT = 3;
Public SnakeModel (int maxX, int maxY) (
This.maxX = maxX;
This.maxY = maxY;
Reset ();
)
Public void reset () (
= SnakeModel.UP direction; / / snake running in the direction
TimeInterval = 200; / / time interval, ms
Paused = false; / / suspended signs
Score = 0; / / scores
CountMove = 0; / / eat food before the number of mobile
/ / Initial matirx, all-0
Matrix = new boolean [maxX] [];
For (int i = 0; i <maxX; + + i) (
Matrix [i] = new boolean [maxY];
Arrays.fill (matrix [i], false);
)
/ / Initial the snake
/ / Initialization of the snake, if the horizontal position over 20, a length of 10, otherwise half of the horizontal position
Int initArrayLength maxX => 20? 10: maxX / 2;
NodeArray.clear ();
For (int i = 0; i <initArrayLength; + + i) (
Int x = maxX / 2 + i;
Int y = maxY / 2;
NodeArray.addLast (new Node (x, y));
Matrix [x] [y] = true;
)
/ / Create food
CreateFood food = ();
Matrix [food.y food.x] [] = true;
)
Public void changeDirection (int newDirection) (
/ / Can not change the direction of the same to the original direction or reverse
If (direction% 2! NewDirection% = 2) (
= NewDirection direction;
)
)
/ **
* Operate a
* @ Return
* /
Public boolean moveOn () (
Node n = (Node) nodeArray.getFirst ();
Int x = nx;
Int y = ny;
/ / In accordance with changes in the direction of the coordinate values
Switch (direction) (
Case UP:
Y -;
Break;
Case DOWN:
Y + +;
Break;
Case LEFT:
X -;
Break;
Case RIGHT:
X + +;
Break;
)
/ / If the new coordinates fell within the scope of effective, treatment
If ((0 <= & x x <maxX) & & (0 <= y & y <maxY)) (
If (matrix [x] [y]) (/ / If the new coordinates of the point on the things (or snake-food)
If (x == == food.x food.y & y) (/ / eat food, success
NodeArray.addFirst (food); / / gifts from the long snakeheads
/ / Score rules, and the number of mobile change direction and speed of the two elements
Int scoreGet = (10000 - 200 * countMove) / timeInterval;
ScoreGet score + => 0? ScoreGet: 10;
CountMove = 0;
CreateFood food = () / / create a new food
Matrix [food.y food.x] [] = true; / / set up food location
Return true;
) Else / / snake eat its own body of failure
Return false;
) Else (/ / If the new coordinates of the point of Nothing (of the snake), mobile snake -
NodeArray.addFirst (new Node (x, y));
Matrix [x] [y] = true;
N = (Node) nodeArray.removeLast ();
Matrix [nx] [ny] = false;
CountMove + +;
Return true;
)
)
Return false; / / touched sideline, failure
)
Public void run () (
Running = true;
While (running) (
Try (
Thread.sleep (timeInterval);
) Catch (Exception e) (
Break;
)
If (! Paused) (
If (moveOn ()) (
SetChanged (); / / Model View data has been updated notice
NotifyObservers ();
Else ()
JOptionPane.showMessageDialog (null,
"You failed."
"Game Over"
JOptionPane.INFORMATION_MESSAGE);
Break;
)
)
)
Running = false;
)
Private Node createFood () (
Int x = 0;
Int y = 0;
/ / Random access to an effective and snakes in the region of food and non-overlapping position
Do (
Random r = new Random ();
X = r.nextInt (maxX);
Y = r.nextInt (maxY);
) While (matrix [x] [y]);
Return new Node (x, y);
)
Public void speedUp () (
TimeInterval *= speedChangeRate;
)
Public void speedDown () (
TimeInterval / = speedChangeRate;
)
Public void changePauseState () (
Paused =! Paused;
)
Public String toString () (
String result = "";
For (int i = 0; i <nodeArray.size (); + + i) (
Node n = (Node) nodeArray.get (i);
Result + = "[" + + nx "," + + ny "]";
)
Return result;
)
)
Class Node (
Int x;
Int y;
Node (int x, int y) (
This.x = x;
This.y = y;
)
)
//———————————————— ———————
/ / SnakeControl.java
Import java.awt.event.KeyEvent;
Import java.awt.event.KeyListener;
/ **
* MVC in Controler, responsible for receiving user operation, and to notify the user Model
* /
Public class SnakeControl implements KeyListener (
SnakeModel model;
Public SnakeControl (SnakeModel model) (
This.model = model;
)
Public void keyPressed (KeyEvent e) (
Int keyCode = e.getKeyCode ();
If (model.running) (/ / running, to deal with the button
Switch (keyCode) (
Case KeyEvent.VK_UP:
Model.changeDirection (SnakeModel.UP);
Break;
Case KeyEvent.VK_DOWN:
Model.changeDirection (SnakeModel.DOWN);
Break;
Case KeyEvent.VK_LEFT:
Model.changeDirection (SnakeModel.LEFT);
Break;
Case KeyEvent.VK_RIGHT:
Model.changeDirection (SnakeModel.RIGHT);
Break;
Case KeyEvent.VK_ADD:
Case KeyEvent.VK_PAGE_UP:
Model.speedUp ();
Break;
Case KeyEvent.VK_SUBTRACT:
Case KeyEvent.VK_PAGE_DOWN:
Model.speedDown ();
Break;
Case KeyEvent.VK_SPACE:
Case KeyEvent.VK_P:
Model.changePauseState ();
Break;
Default:
)
)
/ / Processed under any circumstances keys, buttons lead to restart the game
If (keyCode KeyEvent.VK_R == | |
KeyCode KeyEvent.VK_S == | |
KeyCode == KeyEvent.VK_ENTER) (
Model.reset ();
)
)
Public void keyReleased (KeyEvent e) (
)
Public void keyTyped (KeyEvent e) (
)
)
//———————————————— ———————-
/ / SnakeView.java
Import javax.swing .*;
Import java.awt .*;
Import java.util.Iterator;
Import java.util.LinkedList;
Import java.util.Observable;
Import java.util.Observer;
/ **
* MVC model in the Viewer, is responsible only for the amount of data that can ignore the game and the control logic
* /
Public class SnakeView implements Observer (
SnakeControl control = null;
SnakeModel model = null;
JFrame mainFrame;
Canvas paintCanvas;
JLabel labelScore;
Public static final int canvasWidth = 200;
Public static final int canvasHeight = 300;
Public static final int nodeWidth = 10;
Public static final int nodeHeight = 10;
Public SnakeView (SnakeModel model, SnakeControl control) (
This.model = model;
This.control = control;
MainFrame = new JFrame ( "GreedSnake");
Container cp = mainFrame.getContentPane ();
/ / Create scores of the top of the show
LabelScore = new JLabel ( "Score:");
Cp.add (labelScore, BorderLayout.NORTH);
/ / Create the middle of the game shows that the region
PaintCanvas = new Canvas ();
PaintCanvas.setSize (canvasWidth + 1, canvasHeight + 1);
PaintCanvas.addKeyListener (control);
Cp.add (paintCanvas, BorderLayout.CENTER);
/ / Create underground with the help of column
JPanel panelButtom = new JPanel ();
PanelButtom.setLayout (new BorderLayout ());
JLabel labelHelp;
LabelHelp = new JLabel ( "PageUp, PageDown for speed", JLabel.CENTER);
PanelButtom.add (labelHelp, BorderLayout.NORTH);
LabelHelp = new JLabel ( "ENTER or R or S for start", JLabel.CENTER);
PanelButtom.add (labelHelp, BorderLayout.CENTER);
LabelHelp = new JLabel ( "SPACE or P for pause," JLabel.CENTER);
PanelButtom.add (labelHelp, BorderLayout.SOUTH);
Cp.add (panelButtom, BorderLayout.SOUTH);
MainFrame.addKeyListener (control);
MainFrame.pack ();
MainFrame.setResizable (false);
MainFrame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
MainFrame.setVisible (true);
)
Void repaint () (
Graphics g = paintCanvas.getGraphics ();
/ / Draw background
G.setColor (Color.WHITE);
G.fillRect (0, 0, canvasWidth, canvasHeight);
/ / Draw the snake
G.setColor (Color.BLACK);
LinkedList na = model.nodeArray;
Iterator it na.iterator = ();
While (it.hasNext ()) (
Node n = (Node) it.next ();
DrawNode (g, n);
)
/ / Draw the food
G.setColor (Color.RED);
Node n = model.food;
DrawNode (g, n);
UpdateScore ();
)
Private void drawNode (Graphics g, Node n) (
G.fillRect (nx * nodeWidth,
Ny * nodeHeight,
NodeWidth - 1,
NodeHeight - 1);
)
Public void updateScore () (
String s = "Score:" + model.score;
LabelScore.setText (s);
)
Public void update (Observable o, Object arg) (
Repaint ();
)
)
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