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SpriteCreator.html
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<!DOCTYPE html>
<html>
<head>
<title>Sprite Creator</title>
<style>
* {
background-color: #555555;
}
input {
background-color: #999999;
border: solid 3px #cccccc;
border-radius: 3px;
padding: 2px;
margin: 5px;
font-family: Arial;
color: #ededed;
}
select {
background-color: #999999;
border: solid 3px #cccccc;
border-radius: 3px;
padding: 2px;
margin: 5px;
font-family: Arial;
color: #ededed;
}
label {
font-family: Arial;
color: #ededed;
}
canvas {
border: solid 3px #cccccc;
border-radius: 3px;
background-color: white;
}
.color-button {
width: 25px;
height: 25px;
border: solid #cccccc 1px;
border-radius: 5px;
margin-top: 2px;
margin-bottom: 2px;
font-family: Arial;
}
.selected-color-button {
width: 25px;
height: 25px;
border: solid red 3px;
border-radius: 5px;
}
.save-button {
border: solid #99e699 3px;
border-radius: 3px;
background-color: #33cc33;
font-family: Arial;
color: #ededed;
width: 150px;
}
.save-button:active {
border: solid #47d147 3px;
background-color: #29a329;
}
.clear-button {
border: solid #ff4d4d 3px;
border-radius: 3px;
background-color: #cc0000;
font-family: Arial;
color: #ededed;
width: 150px;
}
.clear-button:active {
border: solid #e60000 3px;
background-color: #990000;
}
.load-button {
border: solid #80b3ff 3px;
border-radius: 3px;
background-color: #0066ff;
font-family: Arial;
color: #ededed;
width: 150px;
}
.load-button:active {
border: solid #1a75ff 3px;
background-color: #0052cc;
}
.frame-preview {
width: 50px;
height: 50px;
border: none;
}
.frame-preview-selected {
width: 50px;
height: 50px;
border: 2px solid blue;
}
div.noSelect {
-webkit-user-select: none; /* Chrome all / Safari all */
-moz-user-select: none; /* Firefox all */
-ms-user-select: none; /* IE 10+ */
}
div {
display: inline-block;
padding-left: 25px;
padding-right: 25px;
vertical-align: top;
}
.swap-input {
width: 50px;
}
button {
color: #ededed;
}
</style>
</head>
<body>
<div class = "noSelect">
<label for = "spriteName">Sprite Name:</label>
<input type = "text" min = "1" id = "spriteName" value = "newSprite"/>
<br>
<label for = "spriteWidth">Sprite Width:</label>
<input type = "number" min = "1" max = "255" id = "spriteWidth" onChange = "updateSpriteWidth();" value = "1"/>
<br>
<label for = "spriteWidth">Sprite Height:</label>
<input type = "number" min = "1" max = "255" id = "spriteHeight" onChange = "updateSpriteHeight();" value = "1"/>
<br>
<label for = "pixelSize">Pixel Size:</label>
<input type = "number" min = "1" id = "pixelSize" onChange = "updatePixelSize();" value = "20"/>
<br><br><br>
<label for = "palette">Palette:</label>
<select id = "palette" onChange = "updatePalette();">
<option value = "basic">Basic</option>
</select>
<br>
<label for = "paletteFile">Load palette:</label>
<input type = "file" id = "paletteFile"></input>
<br>
<label for = "spriteFile">Load sprite:</label>
<input type = "file" id = "spriteFile"></input>
<br>
<label for = "spriteFileLegacy">Legacy load sprite:</label>
<input type = "file" id = "spriteFileLegacy"></input>
<br>
<div id = "colorButtons">
<button class = "selected-color-button" id = "0" onClick = "changeColor(0);">0</button>
<button class = "color-button" id = "1" onClick = "changeColor(1);">1</button>
<button class = "color-button" id = "2" onClick = "changeColor(2);">2</button>
<button class = "color-button" id = "3" onClick = "changeColor(3);">3</button>
<button class = "color-button" id = "4" onClick = "changeColor(4);">4</button>
<button class = "color-button" id = "5" onClick = "changeColor(5);">5</button>
<button class = "color-button" id = "6" onClick = "changeColor(6);">6</button>
<button class = "color-button" id = "7" onClick = "changeColor(7);">7</button>
<br>
<button class = "color-button" id = "8" onClick = "changeColor(8);">8</button>
<button class = "color-button" id = "9" onClick = "changeColor(9);">9</button>
<button class = "color-button" id = "A" onClick = "changeColor(0xA);">A</button>
<button class = "color-button" id = "B" onClick = "changeColor(0xB);">B</button>
<button class = "color-button" id = "C" onClick = "changeColor(0xC);">C</button>
<button class = "color-button" id = "D" onClick = "changeColor(0xD);">D</button>
<button class = "color-button" id = "E" onClick = "changeColor(0xE);">E</button>
<button class = "color-button" id = "F" onClick = "changeColor(0xF);">F</button>
</div>
<br><br><br>
<button class = "save-button" onClick = "save();">SAVE</button>
<button class = "clear-button" onClick = "clearPixelGrid(); drawCanvas(); updateCurrentFramePreview();">CLEAR</button>
<br><br><br>
<label for = "grid">Grid</label>
<input type = "checkbox" id = "grid" onClick = "toggleGrid();" checked>
<label for = "mirrorx">Mirror x-axis</label>
<input type = "checkbox" id = "mirrorx" onClick = "toggleMirror(false);" >
<label for = "mirrorx">Mirror y-axis</label>
<input type = "checkbox" id = "mirrory" onClick = "toggleMirror(true);">
<label for = "tempModeBox">Select pixels</label>
<input type = "checkbox" onclick = "updateTempMode();" id = "tempModeBox"></input>
<br><br><br>
<button onclick = "addFrame();">ADD FRAME</button>
<button onclick = "deleteFrame();">DELETE FRAME</button>
<button onclick = "flipX();">Flip X</button>
<button onclick = "flipY();">Flip Y</button>
<br>
<label for = "swapLeft">Move frame #</label>
<input type = "text" id = "swapLeft" class = "swap-input"></input>
<label for = "swapRight">after frame #</label>
<input type = "text" id = "swapRight" class = "swap-input"></input>
<button onclick = "swapFrames();">SWAP</button>
<br>
<label for = "timePerFrame">Time Per Frame (ms):</label>
<input type = "number" min = "1" max = "65535" id = "timePerFrame" value = 200></input>
<br>
<button onclick = "playOrPause();">Play/Pause</button>
<br>
<button onclick = "window.open('./SpriteCreator.html', '_blank');">New Tab</button>
</div>
<div>
<canvas id = "c"></canvas>
<br>
<label for = "backgroundColor">Background color:</label>
<input type = "color" id = "backgroundColor" value = "#ffffff" onchange = "updateBackgroundColor();"></input>
</div>
<br><br>
<div id = "frames">
</div>
<script>
let c = document.getElementById("c");
let ctx = c.getContext("2d");
let spriteWidth = 1, spriteHeight = 1;
let pixelSize = 20;
let PREVIEW_SCALE = 50;
let PIXELS_PER_SIDE = 16;
let COLOR_CLEAR = 0x10;
let SELECTED_BORDER_STYLE = "solid red 3px";
let UNSELECTED_BORDER_STYLE = "solid #cccccc 1px";
let grid = new Image(), drawGrid = true, mirrorX = false, mirrorY = false;
let bgcolor = "#ffffff";
let tempLayer = [[]];
let tempSelectColor = "#00ff00", tempSelectAlpha = .25;
let selectedPixels = [];
let tempMode = false, selecting = false;
function updateTempMode(){
tempMode = document.getElementById("tempModeBox").checked;
if(!tempMode){
mergeTempLayer();
clearTempLayer();
drawCanvas();
}
else{
selecting = true;
}
}
function drawTempLayer(){
for(var i = 0; i < spriteHeight * PIXELS_PER_SIDE; i++){
for(var j = 0; j < spriteWidth * PIXELS_PER_SIDE; j++){
if(tempLayer[i][j] !== COLOR_CLEAR){
if(selecting)
rect(j * pixelSize, i * pixelSize, pixelSize, pixelSize, tempSelectColor, tempSelectAlpha);
else
drawPixel(j, i, true);
}
}
}
}
function clearTempLayer(){
tempLayer = new Array(spriteHeight * PIXELS_PER_SIDE);
for(var i = 0; i < tempLayer.length; i++)
tempLayer[i] = new Array(spriteWidth * PIXELS_PER_SIDE).fill(COLOR_CLEAR);
selectedPixels = [];
}
function mergeTempLayer(){
let pixelGrid = currentFrame().pixelGrid;
selectedPixels.forEach((p) => {
pixelGrid[p.y][p.x] = COLOR_CLEAR;
});
for(var i = 0; i < tempLayer.length; i++)
for(var j = 0; j < tempLayer[i].length; j++)
if(tempLayer[i][j] !== COLOR_CLEAR)
pixelGrid[i][j] = tempLayer[i][j];
}
function flipX(){
let pixelGrid = currentFrame().pixelGrid;
for(var i = 0; i < pixelGrid.length; i++){
for(var j = 0; j < pixelGrid[i].length / 2; j++){
let x = pixelGrid[i].length - 1 - j;
let temp = pixelGrid[i][j];
pixelGrid[i][j] = pixelGrid[i][x];
pixelGrid[i][x] = temp;
}
}
drawCanvas();
updateFramePreviews();
}
function flipY(){
let pixelGrid = currentFrame().pixelGrid;
for(var i = 0; i < pixelGrid.length / 2; i++){
let y = pixelGrid.length - 1 - i;
let temp = pixelGrid[i];
pixelGrid[i] = pixelGrid[y];
pixelGrid[y] = temp;
}
drawCanvas();
updateFramePreviews();
}
let mouse = {
x: undefined,
y: undefined,
button: -1
};
let LMB = 0, MMB = 1, RMB = 2;
/**
*
* ADD PALETTES HERE
*
*/
let palettes = {
"basic": [
0x000000,
0xffffff,
0xaaaaaa,
0x555555,
0xff0000,
0x00ff00,
0x0000ff,
0xffff00,
0xff00ff,
0x00ffff,
0x770000,
0x007700,
0x000077,
0x777700,
0x770077,
0x007777
]
};
let currentPalette = undefined;
let currentColor = 0;
let frames = [{ pixelGrid: [[]], undoStack: [], redoStack: [] }];
let frame = 0;
function init(){
document.getElementById("frames").innerHTML = '';
document.getElementById("paletteFile").addEventListener('change', loadPalette, false);
document.getElementById("spriteFile").addEventListener('change', loadSprite, false);
document.getElementById("spriteFileLegacy").addEventListener('change', load, false);
addFramePreview(0);
changeFrame(0);
resizePixelGrid();
resizeCanvas();
updatePalette();
}
init();
function save(){
downloadFile();
//printPixelGrid();
}
function downloadFile(){
let timePerFrame = parseInt(document.getElementById("timePerFrame").value);
let charMax = 0b11111111;
let index = 0;
let data = new Uint8Array(5 + (16 * 3) + (spriteWidth * PIXELS_PER_SIDE * spriteHeight * PIXELS_PER_SIDE * frames.length));
data[index++] = spriteWidth;
data[index++] = spriteHeight;
data[index++] = frames.length;
data[index++] = (timePerFrame & (charMax << 8)) >> 8;
data[index++] = (timePerFrame & charMax);
for(var i = 0; i < 16; i++)
{
let cur = currentPalette[i];
data[index++] = (cur & (charMax << 16)) >> 16;
data[index++] = (cur & (charMax << 8)) >> 8;
data[index++] = (cur & charMax);
}
for(var i = 0; i < frames.length; i++)
for(var j = 0; j < spriteHeight * PIXELS_PER_SIDE; j++)
for(var k = 0; k < spriteWidth * PIXELS_PER_SIDE; k++)
data[index++] = frames[i].pixelGrid[j][k];
let file = new Blob([data], { type: 'application/octet-stream' });
let a = document.createElement("a"), url = URL.createObjectURL(file);
a.href = url;
a.download = `${document.getElementById("spriteName").value}.sprite`;
document.body.appendChild(a);
a.click();
setTimeout(() => {
document.body.removeChild(a);
window.URL.revokeObjectURL(url);
}, 0);
}
function loadSprite(e){
if(!confirm('WARNING: Any unsaved progress on the current sprite will be lost. Load anyway?'))
return;
let file = e.target.files[0];
let reader = new FileReader();
reader.onload = (e) => {
let data = new Uint8Array(e.target.result);
let index = 0;
let width = data[index++];
let height = data[index++];
let nframes = data[index++];
document.getElementById("timePerFrame").value = (data[index++] << 8) | data[index++];
let temp = new Array(16);
for(var i = 0; i < 16; i++)
{
let red = (data[index++] << 16);
let green = (data[index++] << 8);
let blue = data[index++];
temp[i] = red | green | blue;
}
palettes[file.name] = temp;
let option = document.createElement("option");
option.value = file.name;
option.innerHTML = file.name;
document.getElementById("palette").appendChild(option);
document.getElementById("palette").value = file.name;
updatePalette();
document.getElementById("spriteName").value = file.name;
document.getElementById("spriteWidth").value = width;
document.getElementById("spriteHeight").value = height;
updateSpriteWidth();
updateSpriteHeight();
frames = [];
frame = 0;
document.getElementById("frames").innerHTML = '';
for(var i = 0; i < nframes; i++){
let grid = [];
for(var j = 0; j < spriteHeight * PIXELS_PER_SIDE; j++)
for(var k = 0; k < spriteWidth * PIXELS_PER_SIDE; k++)
grid.push(data[index++]);
addFrame(createFrameFromBuffer(grid));
}
document.getElementById("palette").value = file.name;
document.getElementById("spriteFile").value = "";
updatePalette();
};
reader.readAsArrayBuffer(file);
document.getElementById("spriteFile").value = "";
}
function createFrameFromBuffer(arr){
let result = new Array(spriteHeight * PIXELS_PER_SIDE);
let index = 0;
for(var i = 0; i < result.length; i++){
result[i] = new Array(spriteWidth * PIXELS_PER_SIDE);
for(var j = 0; j < result[i].length; j++)
result[i][j] = arr[index++];
}
return createFrame(result);
}
let playing = false;
function playOrPause(){
if(!playing)
play();
else
playing = false;
}
async function play(){
playing = true;
while(playing){
drawCanvas();
await sleep(parseInt(document.getElementById("timePerFrame").value));
changeFrame((frame + 1) % frames.length);
}
}
function sleep(ms){
return new Promise(resolve => setTimeout(resolve, ms));
}
function changeFrame(index){
let cfp = getCurrentFramePreview();
if(cfp)
cfp.setAttribute('class', 'frame-preview');
if(index == -1)
frame = frames.length - 1;
else
frame = Math.abs(index % frames.length);
document.getElementById("tempModeBox").checked = false;
updateTempMode();
let preview = getCurrentFramePreview();
if(preview)
preview.setAttribute('class', 'frame-preview-selected');
drawCanvas();
}
function swapFrames(){
let left = parseInt(document.getElementById("swapLeft").value);
let right = parseInt(document.getElementById("swapRight").value);
if(isNaN(left) || isNaN(right) || left === right)
return;
let leftGreater = left > right;
let min = Math.min(left, right), max = Math.max(left, right);
if(min < 0 || max < 0 || min >= frames.length || max >= frames.length){
alert('One or more of the given frame indices is invalid.');
return;
}
let [temp] = frames.splice((leftGreater ? max : min), 1);
frames.splice((leftGreater ? min + 1 : max), 0, temp);
updateFramePreviews();
if(left === frame || right === frame)
drawCanvas();
}
function getCurrentFramePreview(){
return document.getElementById("frames").childNodes[frame];
}
function updateCurrentFramePreview(){
let preview = getCurrentFramePreview();
if(!preview)
return;
preview.style.width = (PREVIEW_SCALE * spriteWidth) + "px";
preview.style.height = (PREVIEW_SCALE * spriteHeight) + "px";
preview.id = "preview" + frame;
let temp = drawGrid;
drawGrid = false;
drawCanvas();
preview.src = c.toDataURL();
drawGrid = temp;
drawCanvas();
}
function updateFramePreviews(){
let temp = frame;
for(var i = 0; i < frames.length; i++){
frame = i;
updateCurrentFramePreview();
}
frame = temp;
}
function addFrame(f){
frames.splice(f ? frames.length : frame, 0, f ? f : copyCurrentFrame());
addFramePreview((frames.length === 1 ? 0 : frame + 1));
if(tempMode){
document.getElementById("tempModeBox").checked = false;
updateTempMode();
}
changeFrame(frame + 1);
updateFramePreviews();
}
function addFramePreview(n){
let preview = document.createElement("input");
preview.setAttribute('type', 'image');
preview.setAttribute('src', c.toDataURL());
preview.setAttribute('class', 'frame-preview');
preview.setAttribute('id', 'preview' + n);
preview.style.width = (PREVIEW_SCALE * spriteWidth) + "px";
preview.style.height = (PREVIEW_SCALE * spriteHeight) + "px";
preview.onclick = () => {
let arr = Array.prototype.slice.call(document.getElementById("frames").childNodes);
changeFrame(arr.indexOf(preview));
}
document.getElementById("frames").appendChild(preview);
}
function deleteFrame(){
if(frames.length === 1){
alert("You must have at least 1 frame!");
return;
}
if(playing)
playing = false;
deleteFramePreview();
frames.splice(frame, 1);
changeFrame(frame);
updateFramePreviews();
}
function deleteFramePreview(){
document.getElementById('preview' + frame).remove();
}
function currentFrame(){
return frames[frame];
}
function copyCurrentFrame(){
let pixelGrid = currentFrame().pixelGrid;
let undoStack = currentFrame().undoStack;
let redoStack = currentFrame().redoStack;
let pg = new Array(pixelGrid.length);
for(var i = 0; i < pg.length; i++){
pg[i] = new Array(pixelGrid[i].length);
for(var j = 0; j < pg[i].length; j++)
pg[i][j] = pixelGrid[i][j];
}
let us = new Array(undoStack.length);
for(var i = 0; i < us.length; i++)
us[i] = undoStack[i];
let rs = new Array(redoStack.length);
for(var i = 0; i < rs.length; i++)
rs[i] = redoStack[i];
return { pixelGrid: pg, undoStack: us, redoStack: rs };
}
function createFrame(pg){
return { pixelGrid: pg, undoStack: [], redoStack: [] };
}
function pixelGridEqual(arr){
let pixelGrid = currentFrame().pixelGrid;
if(arr.length != pixelGrid.length)
return false;
for(var i = 0; i < arr.length; i++){
if(arr[i].length != pixelGrid[i].length)
return false;
for(var j = 0; j < arr[i].length; j++){
if(arr[i][j] != pixelGrid[i][j])
return false;
}
}
return true;
}
function pixelGridCopy(){
let pixelGrid = currentFrame().pixelGrid;
let temp = new Array(pixelGrid.length);
for(var i = 0; i < temp.length; i++){
temp[i] = new Array(pixelGrid[i].length);
for(var j = 0; j < temp[i].length; j++)
temp[i][j] = pixelGrid[i][j];
}
return temp;
}
function changeColor(index){ //switch current color index to given color index
if(index === COLOR_CLEAR)
return;
if(index < 0 || index > 0xF){
console.log(`Invalid color index ${index}. Must be between 0 and 0xF.`);
return;
}
document.getElementById(currentColor.toString(16).toUpperCase()).style.border = UNSELECTED_BORDER_STYLE;
currentColor = index;
document.getElementById(currentColor.toString(16).toUpperCase()).style.border = SELECTED_BORDER_STYLE;
}
function colorHex(c){ //return hex string of color
if(c === COLOR_CLEAR)
return '#00000000';
let s = c.toString(16);
while(s.length < 6)
s = '0' + s;
return '#' + s;
}
function inverseColorHex(c){
let r = c & 0xff0000;
let g = c & 0x00ff00;
let b = c & 0x0000ff;
let ic = (0xff0000 - r) |
(0x00ff00 - g) |
(0x0000ff - b);
return colorHex(ic);
}
function currentColorHex(){ //return hex string of current color
return colorHex(currentPalette[currentColor]);
}
function updateSpriteWidth(){ //get value from textbox
let temp = parseInt(document.getElementById("spriteWidth").value);
let result = true;
if(currentFrame()){
let pixelGrid = currentFrame().pixelGrid;
if(temp < spriteWidth){
let found = false;
for(var x = spriteWidth * PIXELS_PER_SIDE - 1; !found && x > temp * PIXELS_PER_SIDE; x--){
for(var y = 0; !found && y < pixelGrid.length; y++){
if(pixelGrid[y][x] != COLOR_CLEAR){
found = true;
result = confirm('Pixels you have drawn outside of the new canvas will not be saved. Continue?');
}
}
}
}
}
if(result){
spriteWidth = temp;
resizeCanvas();
resizePixelGrid();
}
else {
document.getElementById("spriteWidth").value = spriteWidth;
}
updateFramePreviews();
}
function updateSpriteHeight(){ //get value from textbox
let temp = parseInt(document.getElementById("spriteHeight").value);
let result = true;
if(currentFrame()){
let pixelGrid = currentFrame().pixelGrid;
if(temp < spriteHeight){
let found = false;
for(var y = spriteHeight * PIXELS_PER_SIDE - 1; !found && y > temp * PIXELS_PER_SIDE; y--)
for(var x = 0; !found && x < pixelGrid[y].length; x++)
if(pixelGrid[y][x] != COLOR_CLEAR){
found = true;
result = confirm('Pixels you have drawn outside of the new canvas will not be saved. Continue?');
}
}
}
if(result){
spriteHeight = temp;
resizeCanvas();
resizePixelGrid();
}
else {
document.getElementById("spriteHeight").value = spriteHeight;
}
updateFramePreviews();
}
function updatePixelSize(){ //get value from textbox
pixelSize = parseInt(document.getElementById("pixelSize").value);
resizeCanvas();
}
function loadPalette(e){
let file = e.target.files[0];
let reader = new FileReader();
reader.onload = (e) => {
let data = new Uint8Array(e.target.result);
let index = 0;
let nameLength = data[index++];
let nameBuffer = [];
for(var i = 0; i < nameLength; i++)
nameBuffer.push(data[index++]);
let name = String.fromCharCode(...nameBuffer);
let temp = [];
for(var i = 0; i < 16; i++){
let cur = 0;
cur |= (data[index++] << 16);
cur |= (data[index++] << 8);
cur |= data[index++];
temp.push(cur);
}
palettes[name] = temp;
let option = document.createElement("option");
option.value = name;
option.innerHTML = name;
document.getElementById("palette").appendChild(option);
document.getElementById("palette").value = name;
updatePalette();
};
reader.readAsArrayBuffer(file);
document.getElementById("paletteFile").value = "";
}
function updatePalette(){
currentPalette = palettes[document.getElementById("palette").value];
drawCanvas();
for(var i = 0; i < 0x10; i++){
let button = document.getElementById(""+i.toString(16).toUpperCase());
button.style.color = inverseColorHex(currentPalette[i]);
button.style.backgroundColor = colorHex(currentPalette[i]);
}
}
function resizeCanvas(){ //change canvas according to pixelSize
c.width = pixelSize * PIXELS_PER_SIDE * spriteWidth;
c.height = pixelSize * PIXELS_PER_SIDE * spriteHeight;
for(var i = pixelSize; i < c.width; i += pixelSize){
let color = (mirrorX && i === c.width / 2 ? "#ff0000" : "#000000");
line(i, 0, i, c.height, color);
}
for(var i = pixelSize; i < c.height; i += pixelSize){
let color = (mirrorY && i === c.height / 2 ? "#ff0000" : "#000000");
line(0, i, c.width, i, color);
}
grid.src = c.toDataURL();
grid.onload = () => {
drawCanvas();
}
}
function resizePixelGrid(){ //change grid according to spriteHeight/Width
for(var j = 0; j < frames.length; j++){
let pixelGrid = frames[j].pixelGrid;
let temp = new Array(spriteHeight * PIXELS_PER_SIDE);
for(var i = 0; i < temp.length; i++){
temp[i] = new Array(spriteWidth * PIXELS_PER_SIDE);
temp[i].fill(COLOR_CLEAR);
}
let xmin = Math.min(spriteWidth * PIXELS_PER_SIDE, frames[j].pixelGrid[0].length);
let ymin = Math.min(spriteHeight * PIXELS_PER_SIDE, frames[j].pixelGrid.length);
for(var i = 0; i < ymin; i++)
for(var k = 0; k < xmin; k++)
temp[i][k] = frames[j].pixelGrid[i][k];
frames[j].pixelGrid = temp;
let undoStack = frames[j].undoStack;
for(var l = 0; l < undoStack.length; l++){
let us = undoStack[l];
temp = new Array(spriteHeight * PIXELS_PER_SIDE);
for(var i = 0; i < temp.length; i++){
temp[i] = new Array(spriteWidth * PIXELS_PER_SIDE);
temp[i].fill(COLOR_CLEAR);
}
xmin = Math.min(spriteWidth * PIXELS_PER_SIDE, us[0].length);
ymin = Math.min(spriteHeight * PIXELS_PER_SIDE, us.length);
for(var i = 0; i < ymin; i++)
for(var k = 0; k < xmin; k++)
temp[i][k] = us[i][k];
undoStack[l] = temp;
}
}
clearTempLayer();
drawCanvas();
}
function printPixelGrid(){ //print sprite code to console
let extraTab = (frames.length === 1 ? '' : '\t');
let frameList = "";
for(var i = 0; i < frames.length; i++){
let pixelGrid = frames[i].pixelGrid;
let pixelGridString = "\n";
for(var y = 0; y < pixelGrid.length; y++){
pixelGridString += '\t' + extraTab;
for(var x = 0; x < pixelGrid[y].length; x++){
let cur = pixelGrid[y][x];
pixelGridString += (cur < 10 ? " " + cur : cur);
if(y != pixelGrid.length - 1 || x != pixelGrid[y].length - 1)
pixelGridString += ",";
}
pixelGridString += "\n";
};
frameList += `${extraTab}(short[]){${pixelGridString}\t}${i !== frames.length - 1 ? ",\n" : "\n"}`;
}
let spriteName = document.getElementById("spriteName").value;
let paletteName = "";
Object.keys(palettes).forEach((k) => {
let p = palettes[k];
for(var i = 0; i < p.length; i++)
if(p[i] != currentPalette[i])
return;
paletteName = "&Palettes::" + k.toLowerCase();
});
let s;
if(frames.length === 1)
s = `const Sprite ${spriteName} = Sprite(${paletteName}, ${frameList.substring(0, frameList.length - 1)}, ${spriteWidth}, ${spriteHeight});`;
else{
s = `const MultiSprite ${spriteName} = MultiSprite(${paletteName}, (short*[]){\n ${frameList}}, ${spriteWidth}, ${spriteHeight}, ${frames.length});`;
s += ` // ms per frame: ${document.getElementById("timePerFrame").value}`
}
console.log(s);
}
function clearPixelGrid(){
if(!confirm('Erase the canvas?'))
return;
let pixelGrid = currentFrame().pixelGrid;
for(var i = 0; i < pixelGrid.length; i++)
for(var j = 0; j < pixelGrid[i].length; j++)
pixelGrid[i][j] = COLOR_CLEAR;
}
function load(e){
if(!confirm('WARNING: Any unsaved progress on the current sprite will be lost. Load anyway?'))
return;
let file = e.target.files[0];
let reader = new FileReader();
reader.onload = (e) => {
let data = new Uint8Array(e.target.result);
let index = 0;
let width = data[index++];
let height = data[index++];
let nframes = data[index++];
document.getElementById("timePerFrame").value = (data[index++] << 8) | data[index++];
let paletteNameSize = data[index++];
let paletteNameBuffer = [];
for(var i = 0; i < paletteNameSize; i++)
paletteNameBuffer.push(data[index++]);
let paletteName = String.fromCharCode(...paletteNameBuffer);
if(!palettes[paletteName]){
alert(`Must load palette "${paletteName}" before loading this sprite.`);
return;
}
let spriteNameSize = data[index++];
let spriteNameBuffer = [];
for(var i = 0; i < spriteNameSize; i++)
spriteNameBuffer.push(data[index++]);
document.getElementById("spriteName").value = String.fromCharCode(...spriteNameBuffer);
document.getElementById("spriteWidth").value = width;
document.getElementById("spriteHeight").value = height;
updateSpriteWidth();
updateSpriteHeight();
frames = [];
frame = 0;
document.getElementById("frames").innerHTML = '';
for(var i = 0; i < nframes; i++){
let grid = [];
for(var j = 0; j < spriteHeight * PIXELS_PER_SIDE; j++)
for(var k = 0; k < spriteWidth * PIXELS_PER_SIDE; k++)
grid.push(data[index++]);
addFrame(createFrameFromBuffer(grid));
}
document.getElementById("palette").value = paletteName;
document.getElementById("spriteFile").value = "";
updatePalette();
};
reader.readAsArrayBuffer(file);
document.getElementById("spriteFileLegacy").value = "";
}
function createFrameFromText(text, w, h){
let values = text.trim().split(',');
w = w * PIXELS_PER_SIDE;
h = h * PIXELS_PER_SIDE;
let pg = new Array(h);
for(var i = 0; i < h; i++){
pg[i] = new Array(w);
for(var j = 0; j < w; j++)
pg[i][j] = parseInt(values[i * w + j]);
}
return { pixelGrid: pg, undoStack: [], redoStack: [] };
}
function shiftPixelGrid(dx, dy){
let pixelGrid = (tempMode ? tempLayer: currentFrame().pixelGrid);
for(var i = 0; i < Math.abs(dy); i++){
for(var j = (dy < 0 ? 0 : pixelGrid.length - 1); (dy < 0 ? j < pixelGrid.length - 1 : j > 0); j -= Math.sign(dy))
pixelGrid[j] = pixelGrid[j - Math.sign(dy)];
pixelGrid[(dy < 0 ? pixelGrid.length - 1 : 0)] = new Array(pixelGrid[0].length).fill(COLOR_CLEAR);
}
for(var x = 0; x < Math.abs(dx); x++){
for(var i = 0; i < pixelGrid.length; i++){
for(var j = (dx < 0 ? 0 : pixelGrid[i].length - 1); (dx < 0 ? j < pixelGrid[i].length - 1 : j > 0); j -= Math.sign(dx))
pixelGrid[i][j] = pixelGrid[i][j - Math.sign(dx)];
pixelGrid[i][(dx < 0 ? pixelGrid[i].length - 1 : 0)] = COLOR_CLEAR;
}
}
drawCanvas();
updateCurrentFramePreview();
}
function toggleGrid(){
drawGrid = !drawGrid;
drawCanvas();
}
function toggleMirror(y){
if(y)
mirrorY = !mirrorY;
else
mirrorX = !mirrorX;
resizeCanvas();
drawCanvas();
}
function clearScreen(){
clearRect(0, 0, c.width, c.height);
}
function clearRect(x, y, w, h){
ctx.clearRect(x, y, w, h);
rect(x, y, w, h, bgcolor);
}
function rect(x, y, w, h, c, a = 1){
ctx.globalAlpha = a;
ctx.fillStyle = c;
ctx.fillRect(x, y, w, h);
}
function line(x1, y1, x2, y2, c){
ctx.strokeStyle = c;
ctx.beginPath();
ctx.moveTo(x1, y1);
ctx.lineTo(x2, y2);
ctx.stroke();
ctx.closePath();
}
function drawPixel(x, y, fromTempLayer){
let pixelGrid = currentFrame().pixelGrid;
let index = (fromTempLayer ? tempLayer[y][x] : pixelGrid[y][x]);
if(index === COLOR_CLEAR)
clearRect(x * pixelSize, y * pixelSize, pixelSize, pixelSize);
else {
let color = colorHex(currentPalette[index]);
rect(x * pixelSize, y * pixelSize, pixelSize, pixelSize, color);
}
}
function floodFill(x, y, c){