ミサイルコマンダーもどき

termat

2011-06-26 19:48:12

License: MIT License

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JavaScript 179 lines
HTML 13 lines
CSS 1 lines

ミサイルコマンダーもどき

var ctx;
var width=400;
var height=400;
var miss=new Array();
var exp=new Array();
var tmp=new Array();
var radius=60;
var keyframe=10;
var cx;
var cy;
var damage=0;
var score=0;
var shot=0;
var maxDamage=1;
var init=function(){
  var canvas = document.getElementById('canvas');
  ctx=canvas.getContext('2d');
  $('#canvas').mousedown(function(e){
    if(damage<maxDamage){
      var m=new Missile(
        exp,
        width*0.5,height,
        e.pageX-cx,
        e.pageY-cy,1.2,true);
      tmp.push(m);
      shot++;
      $('#shot').text("shot="+shot);
    }
  });
  cx=$('#canvas').position().left;
  cy=$('#canvas').position().top;
  canvas.addEventListener("touchstart", touchDown, false);
  var timer = setInterval('update()', keyframe);
};
var touchDown=function(event){
  if(damage<maxDamage){
    var mx=event.touches[0].pageX-cx;
    var my=event.touches[0].pageY-cy;
    event.preventDefault();
    var m=new Missile(
      exp,
      width*0.5,height,
      mx,
      my,1.2,true);
    tmp.push(m);
    shot++;
    $('#shot').text("shot="+shot);
  }
};
var restart=function(){
  if(damage>=maxDamage){
    document.getElementById("restart").disabled =false;
    score=0;
    shot=0;
    $('#shot').text("shot="+shot);
    $('#score').text("score="+score);
    while(miss.length>0)miss.pop();
    while(exp.length>0)exp.pop();
    while(tmp.length>0)tmp.pop();
    damage=0;
  }  
};
var gameover=function(){
  ctx.fillStyle = "#aaaaff";
  ctx.font = "36px 'Courier'";
  ctx.fillText("Game Over", 100, 150);
};
var update=function(){
  if(damage>=maxDamage){
    gameover();
    return;
  }
  ctx.clearRect(0, 0, width,height);
  ctx.fillStyle = "#000000";
  ctx.fillRect(0, 0, width,height);
  if(Math.random()<0.02){
    var m=new Missile(
      exp,
      Math.random()*width,0,
      Math.random()*width,height,
      0.4*Math.random()+0.2,false);
    miss.push(m);
  }
  var n0=miss.length;
  var n1=exp.length;
  for(var i=0;i<n0;i++){
    for(var j=0;j<n1;j++){
      if(miss[i].isDiff)continue;
      if(miss[i].dist(exp[j])<=exp[j].r){
        miss[i].expl();
        break;
      }
    }
  }
  for(var i=0;i<n0;i++){
    var obj=miss.shift();
    obj.update(ctx);
    if(obj.alive)miss.push(obj);
  }
  for(var i=0;i<n1;i++){
    var obj=exp.shift();
    obj.update(ctx);
    if(obj.alive)exp.push(obj);
  }
  while(tmp.length>0)miss.push(tmp.pop());
};
var Missile=function(p,x0,y0,x1,y1,sp,isDiff){
  this.len2=(x1-x0)*(x1-x0)+(y1-y0)*(y1-y0);
  this.parent=p;
  this.x0=x0;
  this.y0=y0;
  this.x=x0;
  this.y=y0;
  var len=Math.sqrt(this.len2);
  this.vx=(x1-x0)/len;
  this.vy=(y1-y0)/len;
  this.isDiff=isDiff;
  this.alive=true;
  this.dist=function(m){
    var xx=(this.x-m.x);
    var yy=(this.y-m.y);
    return Math.sqrt(xx*xx+yy*yy);
  };
  this.expl=function(){
    var expl=new Expl(this.x,this.y,radius);
    this.parent.push(expl);
    this.alive=false;
    if(!isDiff&&this.y<height){
        score++;
        $('#score').text("score="+score);
    }

};
  this.update=function(c){
    this.x += this.vx * sp;
    this.y += this.vy * sp;
    c.strokeStyle='#ffff00';
    c.beginPath();
    c.moveTo(this.x0, this.y0);
    c.lineTo(this.x, this.y);
    c.closePath();
    c.stroke();
    var len=(this.x-this.x0)*(this.x-this.x0)+(this.y-this.y0)*(this.y-this.y0)
    if(len>this.len2){
      if(this.y>=height)damage++;
      this.expl();
    }
  };
};
var Expl=function(x,y,r){
  this.x=x;
  this.y=y;
  this.mr=r;
  this.r=1;
  this.dr=r/(1000/keyframe);
  this.alive=true;
  this.alpha=0.8;
  this.dist=function(m){
    var xx=(this.x-m.x);
    var yy=(this.y-m.y);
    return Math.sqrt(xx*xx+yy*yy);
  };
  this.update=function(c){
    ctx.globalAlpha=this.alpha;
    this.r =Math.min(this.mr,this.r+this.dr);
    c.fillStyle='#ffff88';
    c.beginPath();
    c.arc(this.x,this.y,this.r,0,2*Math.PI,false);
    c.closePath();
    c.fill();
    if(this.r>=this.mr){
      this.alpha -=0.01;
      if(this.alpha<=0)this.alive=false;
    }
    ctx.globalAlpha=1.0;
  };
};
google.load('jquery','1.4');
google.setOnLoadCallback(init);

ミサイルコマンダーもどき

var ctx; var width=400; var height=400; var miss=new Array(); var exp=new Array(); var tmp=new Array(); var radius=60; var keyframe=10; var cx; var cy; var damage=0; var score=0; var shot=0; var maxDamage=1; var init=function(){ var canvas = document.getElementById('canvas'); ctx=canvas.getContext('2d'); $('#canvas').mousedown(function(e){ if(damage<maxDamage){ var m=new Missile( exp, width*0.5,height, e.pageX-cx, e.pageY-cy,1.2,true); tmp.push(m); shot++; $('#shot').text("shot="+shot); } }); cx=$('#canvas').position().left; cy=$('#canvas').position().top; canvas.addEventListener("touchstart", touchDown, false); var timer = setInterval('update()', keyframe); }; var touchDown=function(event){ if(damage<maxDamage){ var mx=event.touches[0].pageX-cx; var my=event.touches[0].pageY-cy; event.preventDefault(); var m=new Missile( exp, width*0.5,height, mx, my,1.2,true); tmp.push(m); shot++; $('#shot').text("shot="+shot); } }; var restart=function(){ if(damage>=maxDamage){ document.getElementById("restart").disabled =false; score=0; shot=0; $('#shot').text("shot="+shot); $('#score').text("score="+score); while(miss.length>0)miss.pop(); while(exp.length>0)exp.pop(); while(tmp.length>0)tmp.pop(); damage=0; } }; var gameover=function(){ ctx.fillStyle = "#aaaaff"; ctx.font = "36px 'Courier'"; ctx.fillText("Game Over", 100, 150); }; var update=function(){ if(damage>=maxDamage){ gameover(); return; } ctx.clearRect(0, 0, width,height); ctx.fillStyle = "#000000"; ctx.fillRect(0, 0, width,height); if(Math.random()<0.02){ var m=new Missile( exp, Math.random()*width,0, Math.random()*width,height, 0.4*Math.random()+0.2,false); miss.push(m); } var n0=miss.length; var n1=exp.length; for(var i=0;i<n0;i++){ for(var j=0;j<n1;j++){ if(miss[i].isDiff)continue; if(miss[i].dist(exp[j])<=exp[j].r){ miss[i].expl(); break; } } } for(var i=0;i<n0;i++){ var obj=miss.shift(); obj.update(ctx); if(obj.alive)miss.push(obj); } for(var i=0;i<n1;i++){ var obj=exp.shift(); obj.update(ctx); if(obj.alive)exp.push(obj); } while(tmp.length>0)miss.push(tmp.pop()); }; var Missile=function(p,x0,y0,x1,y1,sp,isDiff){ this.len2=(x1-x0)*(x1-x0)+(y1-y0)*(y1-y0); this.parent=p; this.x0=x0; this.y0=y0; this.x=x0; this.y=y0; var len=Math.sqrt(this.len2); this.vx=(x1-x0)/len; this.vy=(y1-y0)/len; this.isDiff=isDiff; this.alive=true; this.dist=function(m){ var xx=(this.x-m.x); var yy=(this.y-m.y); return Math.sqrt(xx*xx+yy*yy); }; this.expl=function(){ var expl=new Expl(this.x,this.y,radius); this.parent.push(expl); this.alive=false; if(!isDiff&&this.y<height){ score++; $('#score').text("score="+score); } }; this.update=function(c){ this.x += this.vx * sp; this.y += this.vy * sp; c.strokeStyle='#ffff00'; c.beginPath(); c.moveTo(this.x0, this.y0); c.lineTo(this.x, this.y); c.closePath(); c.stroke(); var len=(this.x-this.x0)*(this.x-this.x0)+(this.y-this.y0)*(this.y-this.y0) if(len>this.len2){ if(this.y>=height)damage++; this.expl(); } }; }; var Expl=function(x,y,r){ this.x=x; this.y=y; this.mr=r; this.r=1; this.dr=r/(1000/keyframe); this.alive=true; this.alpha=0.8; this.dist=function(m){ var xx=(this.x-m.x); var yy=(this.y-m.y); return Math.sqrt(xx*xx+yy*yy); }; this.update=function(c){ ctx.globalAlpha=this.alpha; this.r =Math.min(this.mr,this.r+this.dr); c.fillStyle='#ffff88'; c.beginPath(); c.arc(this.x,this.y,this.r,0,2*Math.PI,false); c.closePath(); c.fill(); if(this.r>=this.mr){ this.alpha -=0.01; if(this.alpha<=0)this.alive=false; } ctx.globalAlpha=1.0; }; }; google.load('jquery','1.4'); google.setOnLoadCallback(init);<script type="text/javascript" src="http://www.google.com/jsapi"></script> <meta name="viewport" content="width=480, user-scalable=no, maximum-scale=1.0"> <table border="0" width="200"><tr> <td id="score">score=0</td> <td id="shot">shot=0</td> <td id="restart"><button type="button" onClick="JavaScript:restart()">restart</button></td> </tr> </table> <table border="1"><tr><td> <canvas id="canvas" width="400" height="400"></canvas> </td></tr></table> body { background-color: #DDDDDD; font: 30px sans-serif; }

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