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index.js
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index.js
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var canvas = document.getElementById('ctx');
var chatbox = document.getElementById('chat');
var ctx = canvas.getContext("2d");
var w = window.innerWidth;
var h = window.innerHeight;
var board = "Uninitialized";
resetBoard();
var cols = ['#ff0000','#ffffff','#ffff00'];
var selectedColor = -1, moveNumber = 1;
var mx = my = mb = 0; // Mouse coordinates and button
var stoneWidth = 40;
var boardMarg = stoneWidth/2;
var boardWidth = stoneWidth*7;
var boardHeight = stoneWidth*6;
var rbx = w/2-boardWidth/2, rby = h/2-boardHeight/2;
var tick = 0;
telegrama(24);
//board manipulation
function resetBoard(){
board = [[0,0,0,0,0,0,0],
[0,0,0,0,0,0,0],
[0,0,0,0,0,0,0],
[0,0,0,0,0,0,0],
[0,0,0,0,0,0,0],
[0,0,0,0,0,0,0]];
}
//intervals
setInterval(function(){
w = window.innerWidth;
h = window.innerHeight;
if(canvas.width != w || canvas.height != h){
canvas.width = w;
canvas.height = h;
}
render();
tick++;
},10);
//rendering
function render() {
rBackground();
rBoard();
rResetButton();
rFillTypes();
}
function rBackground() {
ctx.fillStyle = "#dddddd";
ctx.fillRect(0,0,w,h);
}
function rBoard(t){
//render board outline
ctx.fillStyle = "#0077ff";
roundRect(rbx-boardMarg/2,rby-boardMarg/2,boardWidth+boardMarg,boardHeight+boardMarg,boardMarg);
//render highlighted column
var mouseHoverColumn = Math.floor((mx-rbx)/stoneWidth);
ctx.fillStyle = "#0099ff";
if(mouseHoverColumn >= 0 && mouseHoverColumn < 7&& my >= rby && my < rby + boardHeight)
roundRect(rbx+mouseHoverColumn*stoneWidth,rby,stoneWidth,boardHeight,boardMarg);
//render stones and numbers
telegrama(20);
for(var y = 0; y < 6; y++)
for(var x = 0; x < 7; x++){
//render stone
var boardHere = board[5-y][x];
ctx.fillStyle = cols[Math.sign(boardHere)+1];
ctx.beginPath();
ctx.arc(rbx+(x+.5)*stoneWidth, rby+(y+.5)*stoneWidth, stoneWidth*.4, 0, 2*Math.PI);
ctx.fill();
//render number
ctx.textAlign = "center";
ctx.fillStyle = "#000000";
if(boardHere != 0)
ctx.fillText(Math.abs(boardHere), rbx+(x+.5)*stoneWidth, rby+(y+.65)*stoneWidth);
}
}
function rResetButton(){
}
function rFillTypes(){
}
//math
function lerp(a,b,w){
return a*w+b*(1-w);
}
function cerp(a,b,w){
return lerp(a,b,6*(w*w/2-w*w*w/3));
}
function componentToHex(c) {
var hex = c.toString(16);
return hex.length == 1 ? "0" + hex : hex;
}
function rgbToHex(r, g, b) {
return "#" + componentToHex(r) + componentToHex(g) + componentToHex(b);
}
//gfx
function roundRect(x, y, w, h, r) {
ctx.beginPath();
ctx.moveTo(x+r, y);
ctx.arcTo(x+w, y, x+w, y+h, r);
ctx.arcTo(x+w, y+h, x, y+h, r);
ctx.arcTo(x, y+h, x, y, r);
ctx.arcTo(x, y, x+w, y, r);
ctx.closePath();
ctx.fill();
}
function telegrama(x){
ctx.font = x+"px Trebuchet MS";
}
function write(text, x, y, col, sz, align){
ctx.save();
if(col) ctx.fillStyle = col;
if(sz) ctx.font = sz + "pt Telegrama";
if(align) ctx.textAlign = align;
ctx.fillText(text+"",x,y);
ctx.restore();
}
document.addEventListener("mousemove",mouse);
document.addEventListener("mouseup",click);
function click(){
var column = Math.floor((mx-rbx)/stoneWidth);
var row = 0;
while(board[row][column] != 0) {
row++;
if(row >= 6) {
console.log("column full");
return;
}
}
if(column < 0 || column > 6 || my < rby || my > rby+boardHeight) {
console.log("Clicked outside of board");
return;
}
console.log("Clicked on column " + column);
board[row][column] = selectedColor * moveNumber;
selectedColor *= -1;
moveNumber++;
}
function mouse(e){
mx = e.clientX;
my = e.clientY;
mb = e.button;
}