Initial commit.

js/Scratch.js

@@ -0,0 +1,122 @@
+// Copyright (C) 2013 Massachusetts Institute of Technology
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License version 2,
+// as published by the Free Software Foundation.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
+// Scratch HTML5 Player
+// Scratch.js
+// Tim Mickel, July 2011
+
+// Here we define the actions taken on window load.
+// The three application-wide global variables are defined here.
+
+'use strict';
+
+var runtime, interp, io, iosAudioActive = false;
+$(function () {
+    runtime = new Runtime();
+    runtime.init();
+    
+    $(window).keydown(function(e) {
+        runtime.keysDown[e.which] = true;
+        runtime.startKeyHats(e.which);
+    });
+    
+    $(window).keyup(function(e) {
+        delete runtime.keysDown[e.which];
+    });
+    
+    // Update the project ID field
+    $('#project_id').val(project_id);
+    
+    // Go project button behavior
+    $('#go_project').click(function() {
+        window.location = "#" + parseInt($('#project_id').val());
+        window.location.reload(true);
+    });
+    
+    // Green flag behavior
+    $('#trigger_green_flag, #greenSlide').click(function() {
+        $('#greenSlide').css('display', 'none');
+        runtime.greenFlag()
+    });
+    
+    // Stop button behavior
+    $('#trigger_stop').click(function() {
+        runtime.stopAll();
+    });
+    
+    // Canvas container mouse events
+    $('#container').mousedown(function(e) {
+        runtime.mouseDown = true;
+        //e.preventDefault();
+    });
+  
+    $('#container').mouseup(function(e) {
+        runtime.mouseDown = false;
+        //e.preventDefault();
+    });
+  
+    $('#container').mousemove(function(e) {
+        var absX = e.pageX - this.offsetLeft;
+        var absY = e.pageY - this.offsetTop;
+        runtime.mousePos = [absX-240, -absY+180];
+    });
+  
+    // Touch events - EXPERIMENTAL
+    $(window).bind('touchstart', function(e) { 
+        // On iOS, we need to activate the Web Audio API
+        // with an empty sound play on the first touch event.
+        if (!iosAudioActive) {
+            var ibuffer = runtime.audioContext.createBuffer(1, 1, 22050);
+            var isource = runtime.audioContext.createBufferSource();
+            isource.buffer = ibuffer;
+            isource.connect(runtime.audioContext.destination);
+            isource.noteOn(0);
+            iosAudioActive = true;
+        }
+    }); 
+    
+    $('#container').bind('touchstart', function(e) {
+        runtime.mouseDown = true;
+    });
+
+    $('#container').bind('touchend', function(e) {
+        runtime.mouseDown = true;
+    });
+  
+    $('#container').bind('touchmove', function(e) {
+        var touch = e.originalEvent.touches[0] || e.originalEvent.changedTouches[0];
+        var absX = touch.pageX - this.offsetLeft;
+        var absY = touch.pageY - this.offsetTop;
+        runtime.mousePos = [absX-240, -absY+180];
+    });
+  
+    // Border touch events - EXPERIMENTAL
+    $('#left').bind('touchstart touchmove', function(e) { runtime.keysDown[37] = true; runtime.startKeyHats(37); });
+    $('#left').bind('touchend', function(e) { delete runtime.keysDown[37]; });
+    $('#up').bind('touchstart touchmove', function(e) { runtime.keysDown[38] = true; runtime.startKeyHats(38); });
+    $('#up').bind('touchend', function(e) { delete runtime.keysDown[38]; });
+    $('#right').bind('touchstart touchmove', function(e) { runtime.keysDown[39] = true; runtime.startKeyHats(39); });
+    $('#right').bind('touchend', function(e) { delete runtime.keysDown[39]; });
+    $('#down').bind('touchstart touchmove', function(e) { runtime.keysDown[40] = true; runtime.startKeyHats(40); });
+    $('#down').bind('touchend', function(e) { delete runtime.keysDown[40]; });
+  
+    // Load the interpreter and primitives
+    interp = new Interpreter();
+    interp.initPrims();
+  
+    // Load the requested project and go!
+    io = new IO();
+    io.loadProject(project_id);
+});