mirror of
https://github.com/sigmasternchen/Wish
synced 2025-03-15 07:28:56 +00:00
272 lines
6.7 KiB
JavaScript
272 lines
6.7 KiB
JavaScript
/**
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* probably the first game for WishOS
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* a quite traditional, simple snake game
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*
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* bitowl, 2013-07-20
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*/
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SnakeClass = function() {}
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SnakeClass.prototype = new Process();
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// key codes
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SnakeClass.prototype.LEFT = 97
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SnakeClass.prototype.RIGHT = 100
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SnakeClass.prototype.UP = 119
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SnakeClass.prototype.DOWN = 115
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SnakeClass.prototype.QUIT = 113
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// game states
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SnakeClass.prototype.INTRO = 0
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SnakeClass.prototype.INGAME = 1
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SnakeClass.prototype.GAMEOVER = 2
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SnakeClass.prototype.SOONQUIT = 3
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// game world
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SnakeClass.prototype.WIDTH = 80
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SnakeClass.prototype.HEIGHT = 22 // 24 - topbar bottombar
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// entities
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SnakeClass.prototype.EMPTY = 0
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SnakeClass.prototype.PLAYER = 1
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SnakeClass.prototype.WALL = 2
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SnakeClass.prototype.FRUIT = 3 // snake is always healthy
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// ASCII art
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SnakeClass.prototype.TITLE=" :::::::: :::: ::: ::: ::: ::: :::::::::: \n"+
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" :+: :+: :+:+: :+: :+: :+: :+: :+: :+: \n"+
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" +:+ :+:+:+ +:+ +:+ +:+ +:+ +:+ +:+ \n"+
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" +#++:++#++ +#+ +:+ +#+ +#++:++#++: +#++:++ +#++:++# \n"+
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" +#+ +#+ +#+#+# +#+ +#+ +#+ +#+ +#+ \n"+
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" #+# #+# #+# #+#+# #+# #+# #+# #+# #+# \n"+
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" ######## ### #### ### ### ### ### ########## \n";
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SnakeClass.prototype.GAME_OVER=" ____ ___ \n"+
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" / ___| __ _ _ __ ___ ___ / _ \\ __ __ ___ _ __ \n"+
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" | | _ / _` || '_ ` _ \\ / _ \\ | | | |\\ \\ / // _ \\| '__|\n"+
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" | |_| || (_| || | | | | || __/ | |_| | \\ V /| __/| | \n"+
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" \\____| \\__,_||_| |_| |_| \\___| \\___/ \\_/ \\___||_| \n";
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SnakeClass.prototype.main = function(args){
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Kernel.Scheduler.add(this);
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this.stdin=this.files["stdin"];
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this.stdout=this.files["stdout"];
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this.stdout.write("\033[2J"); // clear screen
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this.drawCentered(2,"bitowl presents");
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this.stdout.write("\033[5;0H" + this.TITLE);
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this.drawCentered(17,"any key to continue");
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this.drawCentered(23,"v 0.1");
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this.gameState=this.INTRO;
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}
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SnakeClass.prototype.startGame = function(){
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this.stdout.write("\033[2J"); // clear screen
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// create world array
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this.world=new Array(this.HEIGHT);
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for(i=0;i<this.HEIGHT;i++){
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this.world[i]=new Array(this.WIDTH);
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}
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// init player
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this.direction=this.RIGHT;
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this.posX=6;
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this.posY=1;
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this.bodyParts=new Array();
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this.bodyParts.push(new BodyPart(this.posX,this.posY));
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this.bodyParts.push(new BodyPart(this.posX-1,this.posY));
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this.bodyParts.push(new BodyPart(this.posX-2,this.posY));
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this.setField(this.posX,this.posY,this.PLAYER);
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this.points=0;
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// bottom bar
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this.stdout.write("\033[23;0Hpress q to exit");
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// top bar
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this.stdout.write("\033[0;1H----\033[1mSnake\033[0m----------------------------------------------------------------------");
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this.displayPoints();
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this.lastMove=new Date().getTime();
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this.gameState=this.INGAME;
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}
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SnakeClass.prototype.tick = function(){
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if(this.gameState == this.INGAME){
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var input=this.stdin.read(1);
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input = input.charCodeAt(0);
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if(input){
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var changedword=false;
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switch(input){
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case this.LEFT:
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case this.RIGHT:
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case this.UP:
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case this.DOWN:
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this.direction=input;
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break;
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case this.QUIT:
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this.quitGame();
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return;
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}
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}
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var deltaTime=new Date().getTime()-this.lastMove;
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if(deltaTime>=100){
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this.lastMove+=100;
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// things should not be TOO fast
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// randomly place fruits sometimes
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if(Math.random()<0.1){
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this.setField(Math.floor(Math.random()*this.WIDTH),Math.floor(Math.random()*this.HEIGHT),this.FRUIT);
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}
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// move player
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switch(this.direction){
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case this.LEFT:
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this.setPlayerPos(this.posX-1,this.posY);
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break;
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case this.RIGHT:
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this.setPlayerPos(this.posX+1,this.posY);
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break;
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case this.UP:
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this.setPlayerPos(this.posX,this.posY-1);
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break;
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case this.DOWN:
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this.setPlayerPos(this.posX,this.posY+1);
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break;
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}
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}
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}else if(this.gameState==this.INTRO){
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var input=this.stdin.read();
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input = input.charCodeAt(0);
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if(input){
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this.startGame();
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}
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}else if(this.gameState==this.GAMEOVER){
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var input=this.stdin.read();
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input = input.charCodeAt(0);
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if(input){
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if(input==this.QUIT){
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this.quitGame();
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return;
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}else{
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this.startGame();
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}
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}
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}
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// move cursor to the top left at the end of every frame
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this.stdout.write("\033[0;0H");
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}
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SnakeClass.prototype.setPlayerPos = function(x,y){
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var removeLast=true;
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// move through the borders of the screen
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if(x<0){x=this.WIDTH-1;}
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if(y<0){y=this.HEIGHT-1;}
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if(x>=this.WIDTH){x=0;}
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if(y>=this.HEIGHT){y=0;}
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// collision handling
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switch(this.world[y][x]){
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case this.FRUIT:
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this.points++;
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this.displayPoints();
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removeLast=false; // snake will grow
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break;
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case this.WALL:
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case this.PLAYER:
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this.gameOver();
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return;
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}
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// remove last body part
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if(removeLast){
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var toremove=this.bodyParts.shift();
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this.setField(toremove.x,toremove.y,this.EMPTY);
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}
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this.posX=x;
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this.posY=y;
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this.bodyParts.push(new BodyPart(this.posX,this.posY));
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this.setField(this.posX,this.posY,this.PLAYER);
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}
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SnakeClass.prototype.setField = function(x,y,valuekey){
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this.world[y][x]=valuekey;
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var value="";
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switch(valuekey){
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case this.EMPTY:
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value=" ";
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break;
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case this.PLAYER:
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value="\033[33mX\033[0m";
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break;
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case this.WALL:
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value="#";
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break;
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case this.FRUIT:
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value="\033[32mo\033[0m";
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break;
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}
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// y+1 because of the top bar
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this.stdout.write("\033["+(y+1)+";"+x+"H"+value); // the RIGHT way
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}
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SnakeClass.prototype.displayPoints = function(){
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var len=(this.points+"").length;
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this.stdout.write("\033[0;"+(80-len-8-2)+"Hpoints: "+this.points);
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}
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// draws that text in the middle of a line
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SnakeClass.prototype.drawCentered = function(y,text){
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this.stdout.write("\033["+y+";"+Math.floor((80-text.length)/2)+"H"+text);
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}
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SnakeClass.prototype.gameOver = function(){
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this.gameState=this.GAMEOVER;
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this.stdout.write("\033[5;0H\033[1m\033[31m"+this.GAME_OVER);
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this.drawCentered(15,"\033[0mpress any key to start again");
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this.drawCentered(17,"or q if this game has stressed you enough");
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}
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SnakeClass.prototype.quitGame = function() {
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this.gameState=this.SOONQUIT;
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Kernel.Scheduler.remove(this);
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this.stdout.write("\033[2J");
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this.stdout.write("\033[6;0H" + this.TITLE);
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this.drawCentered(14,"I hope you had fun!");
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this.drawCentered(16,"created by bitowl");
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this.drawCentered(17,"http://bitowl.de");
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this.stdout.write("\033[18;1H\n");
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this.exit(0);
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}
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// one element of snake's body
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function BodyPart(pX,pY){
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this.x=pX;
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this.y=pY;
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}
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