407 lines
12 KiB
JavaScript
407 lines
12 KiB
JavaScript
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/*
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This program is free software. It comes without any warranty, to
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the extent permitted by applicable law. You can redistribute it
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and/or modify it under the terms of the Do What The Fuck You Want
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To Public License, Version 2, as published by Sam Hocevar. See
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http://sam.zoy.org/wtfpl/COPYING for more details.
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*/
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window.onload=function() {
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//dbg=document.createElement("div")
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//document.body.appendChild(dbg)
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field_width=48
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field_height=30
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dot_width=10
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dot_height=10
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create_field()
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adjust_field()
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point=new Array()
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bpoints=new Array()
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points=new Array()
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lines=new Array()
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speed=5
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gameload()
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}
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function create_field() {
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bfield=document.createElement("div")
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bfield.id="bfield"
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field=document.createElement("div")
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field.id="field"
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document.body.appendChild(bfield)
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document.body.appendChild(field)
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dotdiv=document.createElement("div")
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dotdiv.id="dot"
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field.appendChild(dotdiv)
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score_div=document.createElement("div")
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score_div.style.cssFloat="left"
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score_val=document.createTextNode("Score: 0")
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score_div.appendChild(score_val)
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speed_div=document.createElement("div")
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speed_div.style.cssFloat="right"
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speed_val=document.createTextNode("Speed: 5")
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speed_div.appendChild(speed_val)
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bfield.appendChild(score_div)
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bfield.appendChild(speed_div)
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}
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function adjust_field() {
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bfield.style.width=field_width*dot_width-6+"px"
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bfield.style.height="24px"
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bfield.style.marginLeft=-(field_width*dot_width/2)-2+"px"
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bfield.style.marginTop=-(field_height*dot_height/2)-18+"px"
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field.style.width=field_width*dot_width+"px"
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field.style.height=field_height*dot_height+"px"
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field.style.marginLeft=-(field_width*dot_width/2)-2+"px"
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field.style.marginTop=-(field_height*dot_height/2)+14+"px"
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}
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function gameload() {
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score=0
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score_val.data="Score: 0"
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var i
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var lines_len=lines.length
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for (i=0;i<lines_len;i++) {
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field.removeChild(lines[i])
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}
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point.splice(0,point.length)
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bpoints.splice(0,bpoints.length)
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lines.splice(0,lines_len)
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point[0]=[2,3]
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point[1]=[4,3]
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dir=2
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dotx=-1
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doty=-1
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mov=false
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gameover=false
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movement()
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placedot()
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}
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document.onkeydown=function(e) {
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var key
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if (window.event) key=window.event.keyCode
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else if (e) key=e.which
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else key=0
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if (key==19 && mov && !gameover) mov=false
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else if (key==19 && !mov && !gameover) mov=true
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if (key>=37 && key<=40) {
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diff=[point[point.length-2][0]-point[point.length-1][0],point[point.length-2][1]-point[point.length-1][1]]
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if (diff[0]<0) diff[0]=-diff[0]
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if (diff[1]<0) diff[1]=-diff[1]
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if (diff[0]>1 || diff[1]>1) {
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var coor_a, coor_b
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if (key==38 && dir!=1 && dir!=3) {
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coor_a=[0,-1]
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if (dir==2) coor_b=[-1,0]
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else if (dir==4) coor_b=[1,0]
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dir=1
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}
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else if (key==39 && dir!=2 && dir!=4) {
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coor_a=[1,0]
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if (dir==1) coor_b=[0,1]
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else if (dir==3) coor_b=[0,-1]
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dir=2
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}
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else if (key==40 && dir!=3 && dir!=1) {
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coor_a=[0,1]
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if (dir==2) coor_b=[-1,0]
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else if (dir==4) coor_b=[1,0]
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dir=3
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}
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else if (key==37 && dir!=4 && dir!=2) {
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coor_a=[-1,0]
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if (dir==3) coor_b=[0,-1]
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else if (dir==1) coor_b=[0,1]
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dir=4
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}
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if (coor_a) {
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point[point.length-1]=[point[point.length-1][0]+coor_b[0],point[point.length-1][1]+coor_b[1]]
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point[point.length]=[point[point.length-1][0]+coor_a[0],point[point.length-1][1]+coor_a[1]]
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}
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}
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}
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if (((key>=37 && key<=40) || key==32 || key==13) && !mov && !gameover) {
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mov=true
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movement()
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}
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if ((key==32 || key==13) && !mov && gameover) {
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gameload()
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}
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if (key==33 && speed<9) change_speed(1)
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else if (key==34 && speed>1) change_speed(-1)
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}
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function change_score(ud) {
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score+=ud
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score_val.data="Score: "+score
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}
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function change_speed(ud) {
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speed+=ud
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speed_val.data="Speed: "+speed
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}
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function placedot() {
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var x, y, coor, t_ok
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var point_len=point.length
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var bpoints_len=bpoints.length
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var place_ok=false
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var full_len=point_len+bpoints_len
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//var a=0
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//dbg.innerHTML=a+":<br />"
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do {
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x=Math.floor(Math.random()*field_width)
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y=Math.floor(Math.random()*field_height)
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t_ok = true
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for (i=1;i<full_len;i++) {
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if (i<point_len) coor=[[point[i-1][0],point[i-1][1]],[point[i][0],point[i][1]]]
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else coor=bpoints[i-point_len]
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if (coor[0][1]>coor[1][1] || coor[0][0]>coor[1][0]) coor=[coor[1],coor[0]]
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coor[0][1]=coor[0][1]%(field_height)
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coor[1][1]=coor[1][1]%(field_height)
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if (coor[0][1]<0) coor[0][1]+=field_height
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if (coor[1][1]<0) coor[1][1]+=field_height
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if (coor[1][1]<coor[0][1]) coor[1][1]=field_height-1
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coor[0][0]=coor[0][0]%(field_width)
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coor[1][0]=coor[1][0]%(field_width)
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if (coor[0][0]<0) coor[0][0]+=field_width
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if (coor[1][0]<0) coor[1][0]+=field_width
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if (coor[1][0]<coor[0][0]) coor[1][0]=field_width-1
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if (i>=point_len && coor[0][0]<coor[1][0]) coor[1][0]--
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if (i>=point_len && coor[0][1]<coor[1][1]) coor[1][1]--
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if (x>=coor[0][0] && x<=coor[1][0] && y>=coor[0][1] && y<=coor[1][1]) {
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t_ok=false
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}
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//dbg.innerHTML+=x+","+y+" | "+coor[0]+"-"+coor[1]+"<br />"
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}
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if (t_ok)
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place_ok=true
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//a++
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} while (!place_ok)
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dotx=x
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doty=y
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dotdiv.style.width=dot_width+"px"
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dotdiv.style.height=dot_height+"px"
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dotdiv.style.left=dotx*dot_width+"px"
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dotdiv.style.top=doty*dot_height+"px"
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}
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function movement() {
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bpoints.splice(0,bpoints.length)
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points.splice(0,points.length)
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var point_len=point.length
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var i
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var coorl, iffao
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if (dir==1) coorl=[0,1]
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else if (dir==2) coorl=[-1,0]
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else if (dir==3) coorl=[0,-1]
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else if (dir==4) coorl=[1,0]
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var line_height, line_width, x, y
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for (i=0;i<point_len-1;i++) {
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if (point[i][0]==point[i+1][0] && point[i][1]>point[i+1][1]) {
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line_height=point[i][1]-point[i+1][1]+1
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line_width=1
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x=point[i][0]
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y=point[i+1][1]
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}
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else if (point[i][1]==point[i+1][1] && point[i+1][0]>point[i][0]) {
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line_height=1
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line_width=point[i+1][0]-point[i][0]+1
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x=point[i][0]
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y=point[i][1]
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}
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else if (point[i][0]==point[i+1][0] && point[i][1]<point[i+1][1]) {
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line_height=point[i+1][1]-point[i][1]+1
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line_width=1
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x=point[i][0]
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y=point[i][1]
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}
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else if (point[i][1]==point[i+1][1] && point[i+1][0]<point[i][0]) {
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line_height=1
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line_width=point[i][0]-point[i+1][0]+1
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x=point[i+1][0]
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y=point[i][1]
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}
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if (x>field_width-1) x=x%(field_width)
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else if (x<0) x=field_width+x%(field_width)
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if (y>field_height-1) y=y%(field_height)
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else if (y<0) y=field_height+y%(field_height)
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if (x==field_width) x=0
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if (y==field_height) y=0
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if (x+line_width>field_width) {
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bpoints[bpoints.length]=[[0,y],[(x+line_width)%(field_width),y]]
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line_width=field_width-x
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}
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if (y+line_height>field_height) {
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bpoints[bpoints.length]=[[x,0],[x,(y+line_height)%(field_height)]]
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line_height=field_height-y
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}
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line_height*=dot_height
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line_width*=dot_width
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x*=dot_width
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y*=dot_height
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points[points.length]=[line_height,line_width,x,y]
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}
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var bpoints_len=bpoints.length
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for (i=0;i<bpoints_len;i++) {
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if (bpoints[i][0][0]==bpoints[i][1][0] && bpoints[i][0][1]>bpoints[i][1][1]) {
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line_height=bpoints[i][0][1]-bpoints[i][1][1]
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line_width=1
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x=bpoints[i][0][0]
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y=bpoints[i][1][1]
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}
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else if (bpoints[i][0][1]==bpoints[i][1][1] && bpoints[i][1][0]>bpoints[i][0][0]) {
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line_height=1
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line_width=bpoints[i][1][0]-bpoints[i][0][0]
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x=bpoints[i][0][0]
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y=bpoints[i][0][1]
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}
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else if (bpoints[i][0][0]==bpoints[i][1][0] && bpoints[i][0][1]<bpoints[i][1][1]) {
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line_height=bpoints[i][1][1]-bpoints[i][0][1]
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line_width=1
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x=bpoints[i][0][0]
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y=bpoints[i][0][1]
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}
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else if (bpoints[i][0][1]==bpoints[i][1][1] && bpoints[i][1][0]<bpoints[i][0][0]) {
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line_height=1
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line_width=bpoints[i][0][0]-bpoints[i][1][0]
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x=bpoints[i][1][0]
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y=bpoints[i][0][1]
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}
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line_height*=dot_height
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line_width*=dot_width
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x*=dot_width
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y*=dot_height
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points[points.length]=[line_height,line_width,x,y]
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}
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x=point[point.length-1][0]%field_width
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y=point[point.length-1][1]%field_height
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if (x<0) x+=field_width
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if (y<0) y+=field_height
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var cutend=true
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if (x==dotx && y==doty) {
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change_score(speed)
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placedot()
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cutend=false
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}
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var full_len=point_len+bpoints_len
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var coor
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for (i=1;i<full_len;i++) {
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if (i<point_len) coor=[[point[i-1][0],point[i-1][1]],[point[i][0],point[i][1]]]
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else coor=bpoints[i-point_len]
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if (coor[0][1]>coor[1][1] || coor[0][0]>coor[1][0]) coor=[coor[1],coor[0]]
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coor[0][1]=coor[0][1]%(field_height)
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coor[1][1]=coor[1][1]%(field_height)
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if (coor[0][1]<0) coor[0][1]+=field_height
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if (coor[1][1]<0) coor[1][1]+=field_height
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if (coor[1][1]<coor[0][1]) coor[1][1]=field_height-1
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coor[0][0]=coor[0][0]%(field_width)
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coor[1][0]=coor[1][0]%(field_width)
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if (coor[0][0]<0) coor[0][0]+=field_width
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if (coor[1][0]<0) coor[1][0]+=field_width
|
||
|
|
if (coor[1][0]<coor[0][0]) coor[1][0]=field_width-1
|
||
|
|
|
||
|
|
var wcoor
|
||
|
|
if (dir==2 || dir==3) wcoor=1
|
||
|
|
else wcoor=0
|
||
|
|
|
||
|
|
if (i==point_len-1 && coor[wcoor][0]==x && coor[wcoor][1]==y) coor[wcoor]=[x+coorl[0],y+coorl[1]]
|
||
|
|
else if (i==full_len-1 && coor[wcoor][0]==x+coorl[1]+1 && coor[wcoor][1]==y+coorl[0]+1) coor[wcoor]=[x+coorl[0],y+coorl[1]]
|
||
|
|
|
||
|
|
if (i>=point_len && coor[0][0]<coor[1][0]) coor[1][0]--
|
||
|
|
if (i>=point_len && coor[0][1]<coor[1][1]) coor[1][1]--
|
||
|
|
|
||
|
|
if (x>=coor[0][0] && x<=coor[1][0] && y>=coor[0][1] && y<=coor[1][1]) {
|
||
|
|
mov=false
|
||
|
|
gameover=true
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!gameover) {
|
||
|
|
var points_len=points.length
|
||
|
|
var lines_len=lines.length
|
||
|
|
|
||
|
|
if (points_len>lines_len) {
|
||
|
|
for (i=lines_len;i<points_len;i++) {
|
||
|
|
lines[i]=document.createElement("div")
|
||
|
|
field.appendChild(lines[i])
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else if (points_len<lines_len) {
|
||
|
|
for (i=0;i<lines_len-points_len;i++) {
|
||
|
|
field.removeChild(lines[i])
|
||
|
|
}
|
||
|
|
lines.splice(0,i)
|
||
|
|
}
|
||
|
|
|
||
|
|
for (i=0;i<points_len;i++) {
|
||
|
|
lines[i].style.height=points[i][0]+"px"
|
||
|
|
lines[i].style.width=points[i][1]+"px"
|
||
|
|
lines[i].style.left=points[i][2]+"px"
|
||
|
|
lines[i].style.top=points[i][3]+"px"
|
||
|
|
}
|
||
|
|
|
||
|
|
i=point_len-1
|
||
|
|
if (point[i-1][0]==point[i][0] && point[i-1][1]>point[i][1]) point[i][1]--
|
||
|
|
else if (point[i-1][1]==point[i][1] && point[i][0]>point[i-1][0]) point[i][0]++
|
||
|
|
else if (point[i-1][0]==point[i][0] && point[i-1][1]<point[i][1]) point[i][1]++
|
||
|
|
else if (point[i-1][1]==point[i][1] && point[i][0]<point[i-1][0]) point[i][0]--
|
||
|
|
|
||
|
|
if (cutend) {
|
||
|
|
if (point[0][0]==point[1][0]) {
|
||
|
|
if (point[0][1]>point[1][1]) point[0][1]--
|
||
|
|
else if (point[0][1]<point[1][1]) point[0][1]++
|
||
|
|
if (point[0][1]==point[1][1]) point.splice(0,1)
|
||
|
|
}
|
||
|
|
else if (point[0][1]==point[1][1]) {
|
||
|
|
if (point[1][0]>point[0][0]) point[0][0]++
|
||
|
|
else if (point[1][0]<point[0][0]) point[0][0]--
|
||
|
|
if (point[1][0]==point[0][0]) point.splice(0,1)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (mov) mov_t=setTimeout(movement,450/speed)
|
||
|
|
}
|
||
|
|
}
|