mirror of
https://github.com/scratchfoundation/scratch-vm.git
synced 2024-12-25 15:32:40 -05:00
285 lines
9.8 KiB
JavaScript
285 lines
9.8 KiB
JavaScript
var loadProject = function () {
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var id = location.hash.substring(1);
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if (id.length < 1) {
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id = '119615668';
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}
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var url = 'https://projects.scratch.mit.edu/internalapi/project/' +
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id + '/get/';
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var r = new XMLHttpRequest();
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r.onreadystatechange = function() {
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if (this.readyState === 4) {
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if (r.status === 200) {
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window.vm.loadProject(this.responseText);
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} else {
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window.vm.createEmptyProject();
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}
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}
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};
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r.open('GET', url);
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r.send();
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};
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window.onload = function() {
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// Lots of global variables to make debugging easier
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// Instantiate the VM worker.
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var vm = new window.VirtualMachine();
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window.vm = vm;
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// Loading projects from the server.
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document.getElementById('projectLoadButton').onclick = function () {
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document.location = '#' + document.getElementById('projectId').value;
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location.reload();
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};
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document.getElementById('createEmptyProject').addEventListener('click',
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function() {
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document.location = '#' + 'createEmptyProject';
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location.reload();
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});
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loadProject();
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// Instantiate the renderer and connect it to the VM.
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var canvas = document.getElementById('scratch-stage');
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window.renderer = new window.RenderWebGL(canvas);
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// Instantiate scratch-blocks and attach it to the DOM.
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var toolbox = document.getElementById('toolbox');
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var workspace = window.Blockly.inject('blocks', {
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toolbox: toolbox,
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media: '../node_modules/scratch-blocks/media/',
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zoom: {
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controls: true,
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wheel: true,
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startScale: 0.75
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},
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colours: {
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workspace: '#334771',
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flyout: '#283856',
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scrollbar: '#24324D',
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scrollbarHover: '#0C111A',
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insertionMarker: '#FFFFFF',
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insertionMarkerOpacity: 0.3,
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fieldShadow: 'rgba(255, 255, 255, 0.3)',
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dragShadowOpacity: 0.6
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}
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});
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window.workspace = workspace;
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// Attach scratch-blocks events to VM.
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// @todo: Re-enable flyout listening after fixing GH-69.
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workspace.addChangeListener(vm.blockListener);
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// Create FPS counter.
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var stats = new window.Stats();
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document.getElementById('tab-renderexplorer').appendChild(stats.dom);
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stats.dom.style.position = 'relative';
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stats.begin();
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// Playground data tabs.
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// Block representation tab.
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var blockexplorer = document.getElementById('blockexplorer');
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var updateBlockExplorer = function(blocks) {
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blockexplorer.innerHTML = JSON.stringify(blocks, null, 2);
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window.hljs.highlightBlock(blockexplorer);
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};
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// Thread representation tab.
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var threadexplorer = document.getElementById('threadexplorer');
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var cachedThreadJSON = '';
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var updateThreadExplorer = function (threads) {
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var newJSON = JSON.stringify(threads, null, 2);
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if (newJSON != cachedThreadJSON) {
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cachedThreadJSON = newJSON;
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threadexplorer.innerHTML = cachedThreadJSON;
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window.hljs.highlightBlock(threadexplorer);
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}
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};
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// Only request data from the VM thread if the appropriate tab is open.
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window.exploreTabOpen = false;
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var getPlaygroundData = function () {
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vm.getPlaygroundData();
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if (window.exploreTabOpen) {
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window.requestAnimationFrame(getPlaygroundData);
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}
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};
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// VM handlers.
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// Receipt of new playground data (thread, block representations).
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vm.on('playgroundData', function(data) {
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updateThreadExplorer(data.threads);
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updateBlockExplorer(data.blocks);
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});
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// Receipt of new block XML for the selected target.
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vm.on('workspaceUpdate', function (data) {
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window.Blockly.Events.disable();
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workspace.clear();
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var dom = window.Blockly.Xml.textToDom(data.xml);
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window.Blockly.Xml.domToWorkspace(dom, workspace);
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window.Blockly.Events.enable();
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});
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// Receipt of new list of targets, selected target update.
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var selectedTarget = document.getElementById('selectedTarget');
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vm.on('targetsUpdate', function (data) {
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// Clear select box.
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while (selectedTarget.firstChild) {
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selectedTarget.removeChild(selectedTarget.firstChild);
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}
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// Generate new select box.
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for (var i = 0; i < data.targetList.length; i++) {
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var targetOption = document.createElement('option');
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targetOption.setAttribute('value', data.targetList[i][0]);
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// If target id matches editingTarget id, select it.
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if (data.targetList[i][0] == data.editingTarget) {
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targetOption.setAttribute('selected', 'selected');
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}
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targetOption.appendChild(
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document.createTextNode(data.targetList[i][1])
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);
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selectedTarget.appendChild(targetOption);
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}
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});
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selectedTarget.onchange = function () {
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vm.setEditingTarget(this.value);
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};
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// Feedback for stacks and blocks running.
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vm.on('STACK_GLOW_ON', function(data) {
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workspace.glowStack(data.id, true);
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});
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vm.on('STACK_GLOW_OFF', function(data) {
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workspace.glowStack(data.id, false);
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});
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vm.on('BLOCK_GLOW_ON', function(data) {
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workspace.glowBlock(data.id, true);
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});
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vm.on('BLOCK_GLOW_OFF', function(data) {
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workspace.glowBlock(data.id, false);
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});
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vm.on('VISUAL_REPORT', function(data) {
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workspace.reportValue(data.id, data.value);
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});
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// Feed mouse events as VM I/O events.
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document.addEventListener('mousemove', function (e) {
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var rect = canvas.getBoundingClientRect();
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var coordinates = {
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x: e.clientX - rect.left,
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y: e.clientY - rect.top,
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canvasWidth: rect.width,
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canvasHeight: rect.height
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};
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window.vm.postIOData('mouse', coordinates);
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});
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canvas.addEventListener('mousedown', function (e) {
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var rect = canvas.getBoundingClientRect();
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var data = {
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isDown: true,
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x: e.clientX - rect.left,
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y: e.clientY - rect.top,
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canvasWidth: rect.width,
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canvasHeight: rect.height
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};
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window.vm.postIOData('mouse', data);
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e.preventDefault();
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});
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canvas.addEventListener('mouseup', function (e) {
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var rect = canvas.getBoundingClientRect();
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var data = {
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isDown: false,
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x: e.clientX - rect.left,
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y: e.clientY - rect.top,
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canvasWidth: rect.width,
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canvasHeight: rect.height
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};
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window.vm.postIOData('mouse', data);
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e.preventDefault();
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});
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// Feed keyboard events as VM I/O events.
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document.addEventListener('keydown', function (e) {
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// Don't capture keys intended for Blockly inputs.
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if (e.target != document && e.target != document.body) {
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return;
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}
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window.vm.postIOData('keyboard', {
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keyCode: e.keyCode,
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isDown: true
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});
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e.preventDefault();
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});
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document.addEventListener('keyup', function(e) {
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// Always capture up events,
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// even those that have switched to other targets.
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window.vm.postIOData('keyboard', {
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keyCode: e.keyCode,
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isDown: false
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});
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// E.g., prevent scroll.
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if (e.target != document && e.target != document.body) {
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e.preventDefault();
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}
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});
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// Run threads
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vm.start();
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// Inform VM of animation frames.
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var animate = function() {
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stats.end();
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stats.begin();
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window.vm.animationFrame();
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requestAnimationFrame(animate);
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};
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requestAnimationFrame(animate);
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// Handlers for green flag and stop all.
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document.getElementById('greenflag').addEventListener('click', function() {
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vm.greenFlag();
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});
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document.getElementById('stopall').addEventListener('click', function() {
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vm.stopAll();
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});
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var tabBlockExplorer = document.getElementById('tab-blockexplorer');
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var tabThreadExplorer = document.getElementById('tab-threadexplorer');
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var tabRenderExplorer = document.getElementById('tab-renderexplorer');
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var tabImportExport = document.getElementById('tab-importexport');
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// Handlers to show different explorers.
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document.getElementById('threadexplorer-link').addEventListener('click',
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function () {
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window.exploreTabOpen = true;
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getPlaygroundData();
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tabBlockExplorer.style.display = 'none';
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tabRenderExplorer.style.display = 'none';
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tabThreadExplorer.style.display = 'block';
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tabImportExport.style.display = 'none';
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});
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document.getElementById('blockexplorer-link').addEventListener('click',
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function () {
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window.exploreTabOpen = true;
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getPlaygroundData();
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tabBlockExplorer.style.display = 'block';
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tabRenderExplorer.style.display = 'none';
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tabThreadExplorer.style.display = 'none';
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tabImportExport.style.display = 'none';
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});
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document.getElementById('renderexplorer-link').addEventListener('click',
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function () {
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window.exploreTabOpen = false;
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tabBlockExplorer.style.display = 'none';
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tabRenderExplorer.style.display = 'block';
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tabThreadExplorer.style.display = 'none';
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tabImportExport.style.display = 'none';
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});
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document.getElementById('importexport-link').addEventListener('click',
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function () {
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window.exploreTabOpen = false;
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tabBlockExplorer.style.display = 'none';
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tabRenderExplorer.style.display = 'none';
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tabThreadExplorer.style.display = 'none';
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tabImportExport.style.display = 'block';
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});
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};
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