anlast.github.io/index.html at master · Anlast/anlast.github.io · GitHub

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<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8" />
    <title>Boundrop</title>
    <style>
    	* { padding: 0; margin: 0; }
    	canvas { background: rgb(40, 40, 40); display: block; margin: 0 auto; margin-top: 20px; }
    	#menu ul{
  list-style: none;
  display:table; margin:0 auto; margin-top: 20px;
}
#menu li{
  display: inline;
}

    </style>
</head>
<body>
<div id="menu">
	<ul>
		<li><input id="Restart" type="button" value="Restart" onclick="Params();" /></li>
		<li><input id="Pause" type="button" value="Pause" onclick="Params();" /></li>
		<li><input id="Parameters" type="button" value="Parameters" onclick="Params();" /></li>
	</ul>
</div>

<canvas id="canvas" width="480" height="320"></canvas>

<script>
/* Fix Me - mollusca need to be sorted otherwise smallest might not be visible! */
var params;
var started = false;
var player;
var molluscs = [];
var colors = ['red', 'green', 'yellow'];

const NCOLORS = 3;
const NMOLLUSCS = 10;
const SPEED = 2;
const SIZE = 1;
const GROWTHRATE = 0.08;
const SHRINKRATE = 0.07;

function Params(w = 12, h = 8, gap = 50)
{
    this.w = w;
    this.h = h;
    this.gap = gap;
}

params = new Params();

const EDGEOFFSET = params.gap/2;
const HOLERADIUS = 4;

const Dir = {NULL: 0, HOR: 1, VERT: 2}

function Player(x, y, r)
{
	this.x = x;
	this.y = y;
	this.r = r;
	this.tracks = [];
}

function SpawnPlayer()
{
	player = new Player(EDGEOFFSET + Math.floor((params.w-1)*Math.random())*params.gap,
						EDGEOFFSET + Math.floor((params.h-1)*Math.random())*params.gap, HOLERADIUS);
	player.tracks.push({x: player.x, y: player.y, dir: Dir.NULL, corner: true});
}

function Mollusca(x, y, r, c, dx, dy)
{
    this.x = x;
    this.y = y;
    this.r = r;
    this.c = c;
    this.dx = dx;
    this.dy = dy;
    this.move = function() {
        if(this.x+this.dx-this.r<0+EDGEOFFSET || this.x+this.dx+this.r>(params.w-1)*params.gap+EDGEOFFSET) this.dx*=-1;
        if(this.y+this.dy-this.r<0+EDGEOFFSET || this.y+this.dy+this.r>(params.h-1)*params.gap+EDGEOFFSET) this.dy*=-1;
        this.x += this.dx;
        this.y += this.dy;
    }
    this.grow = function() {
        this.r+=GROWTHRATE;
    }
    this.shrink = function() {
        this.r-=SHRINKRATE;
    }
    this.moving = false;
}

/* FIX ME - spawns musn't overlay
 */
function MolluscaSpawn()
{
	var angle = 2*Math.PI*Math.random();
    var mollusca = new Mollusca(EDGEOFFSET + Math.floor((params.w-1)*Math.random())*params.gap + params.gap/2,
                                 EDGEOFFSET + Math.floor((params.h-1)*Math.random())*params.gap + params.gap/2,
                                 SIZE, colors[Math.floor(NCOLORS*Math.random())], SPEED*Math.cos(angle), SPEED*Math.sin(angle));
    return mollusca;
}

function SpawnMolluscs()
{
    while(molluscs.length < NMOLLUSCS)
        molluscs.push(MolluscaSpawn());
}

function MoveMolluscs()
{
    for(var m of molluscs)
    {
    if(m.moving)
		m.move();
	else if(m.r >= 20)
	{
		m.moving = true;
		m.move;
	}
	else
		m.grow();
	}
}

const canvas = document.getElementById('canvas');
//var ctx = canvas.getContext('2d');
var ctx = canvas.getContext('2d');
ctx.canvas.width = params.w*params.gap;
ctx.canvas.height = params.h*params.gap;

function MolluscsCollision()
{
    for(let i = 0; i < molluscs.length-1; i++)
    for(let j = i+1; j < molluscs.length; j++)
    {
        let collide = false;

        let dx = molluscs[i].x - molluscs[j].x;
        let dy = molluscs[i].y - molluscs[j].y;

        let dist = Math.sqrt(dx*dx + dy*dy);

        if(dist < molluscs[i].r + molluscs[j].r) {
            if(molluscs[i].c == molluscs[j].c)
            {
                molluscs[i].grow();
                molluscs[j].grow();
            } else {
                molluscs[i].shrink();
                molluscs[j].shrink();
                if(molluscs[i].r == 0) molluscs.splice(i, 1);
                if(molluscs[j].r == 0) molluscs.splice(j, 1);
            }
        }
    }
}

function TracksCollision()
{
	for(var mollusca of molluscs)
	for(var i = 0; i < player.tracks.length-1; i++)
	{
		var dx = mollusca.x + mollusca.dx - player.tracks[i].x;
		var dy = mollusca.y + mollusca.dy - player.tracks[i].y;

		let dist = Math.sqrt(dx*dx + dy*dy);

		var x1 = player.tracks[i].x;
		var x2 = player.tracks[i+1].x;

		var y1 = player.tracks[i].y;
		var y2 = player.tracks[i+1].y;

        if(player.tracks[i].corner && dist <= mollusca.r) {
			mollusca.dx*=-1;
			mollusca.dy*=-1;
		} else if (x1 == x2
					&& (mollusca.y + mollusca.dy - y1)*(mollusca.y + mollusca.dy - y2) < 0
					&& Math.abs(mollusca.x + mollusca.dx - x1) <= mollusca.r) {
			mollusca.dx*=-1;
		} else if (y1 == y2
					&& (mollusca.x + mollusca.dx - x1)*(mollusca.x + mollusca.dx - x2) < 0
					&& Math.abs(mollusca.y + mollusca.dy - y1) <= mollusca.r) {
			mollusca.dy*=-1;
		}
	}
}


function PlayerCollision(player, mollusca)
{
}

function Draw()
{
    ctx.clearRect(0, 0, canvas.width, canvas.height);

    /* Punch the holes to make the grid */
    for(let y = 0; y < params.h; y++)
    for(let x = 0; x < params.w; x++)
    {
        ctx.beginPath();
        ctx.arc(EDGEOFFSET + x*params.gap,EDGEOFFSET + y*params.gap, HOLERADIUS, 0, Math.PI*2);
        ctx.fillStyle = "black";
        ctx.fill();
        ctx.closePath();
    }
    /* Draw molluscs */
    for(var m of molluscs)
    {
        ctx.beginPath();
        ctx.arc(m.x, m.y, m.r, 0, Math.PI*2);
        ctx.fillStyle = m.c;
        ctx.fill();
        ctx.closePath();
    }

    /* Draw player */
    ctx.beginPath();
    ctx.arc(player.x, player.y, player.r, 0, Math.PI*2);
    ctx.fillStyle = 'white';
    ctx.fill();
    ctx.closePath();

    ctx.beginPath();
    ctx.moveTo(player.tracks[0].x, player.tracks[0].y);
    for(var t of player.tracks)	ctx.lineTo(t.x, t.y);
    ctx.strokeStyle = 'white';
    ctx.stroke();
    ctx.closePath();

}

function keyDownHandler(e) {
    if(e.key == "Right" || e.key == "ArrowRight") {
        rightPressed = true;
        player.x += params.gap;
    }
    else if(e.key == "Left" || e.key == "ArrowLeft") {
        leftPressed = true;
        player.x -= params.gap;
    } else if(e.key == "Up" || e.key == "ArrowUp") {
        leftPressed = true;
        player.y -= params.gap;
    } else if(e.key == "Down" || e.key == "ArrowDown") {
        leftPressed = true;
        player.y += params.gap;
    }
    var tracks = player.tracks;
    tracks.push({x: player.x,y: player.y, dir: Dir.NULL, corner: false});
    if(tracks[tracks.length-1].x == tracks[tracks.length-2].x)
		tracks[tracks.length-1].dir = Dir.VERT;
	else
		tracks[tracks.length-1].dir = Dir.HOR;

	if(tracks[tracks.length-1].dir != tracks[tracks.length-2].dir)
		tracks[tracks.length-2].corner = true;

    function pnpoly(testx, testy)
	{
		/*
		 * Point inclusion in polygon test.
		 */
		var i, j, c = 0;
		for (i = 0, j = player.tracks.length-1; i < player.tracks.length; j = i++) {
		if ( ((player.tracks[i].y>testy) != (player.tracks[j].y>testy)) &&
			(testx < (player.tracks[j].x-player.tracks[i].x) * (testy-player.tracks[i].y) / (player.tracks[j].y-player.tracks[i].y) + player.tracks[i].x) )
			c = !c;
		}
		return c;
	}
    for(var i = 0; i < tracks.length-1; i++)
	if(player.tracks[i].x == player.x && player.tracks[i].y == player.y)
	{
		/* FIX ME - first and last vertex are not necessarily adjacent */
		var mcount = [];
		for(var m = 0; m < molluscs.length; m++)
		if(pnpoly(molluscs[m].x, molluscs[m].y))
		{
			mcount[molluscs.c]=1;
			molluscs.splice(m, 1);
		}
		SpawnMolluscs();
		if(mcount.length == 1)
			console.log("score");
		player.tracks.splice(0, player.tracks.length-1); // keep last position
		break;
	}
}

document.addEventListener("keydown", keyDownHandler, false);

started = true;
if(started)
{
	SpawnMolluscs();
	SpawnPlayer();
}
setInterval(Draw, 30);
setInterval(MoveMolluscs, 30);
setInterval(MolluscsCollision, 30);
setInterval(TracksCollision, 30);
setInterval(PlayerCollision, 30);
setInterval(TracksCollision, 30);
</script>

</body>
</html>