1 files changed, 85 insertions, 0 deletions
diff --git a/projects/chip8emu/module.js b/projects/chip8emu/module.js
new file mode 100644
index 0000000..711736e
--- /dev/null
+++ b/projects/chip8emu/module.js
@@ -0,0 +1,85 @@
+var statusElement = document.getElementById('status');
+var progressElement = document.getElementById('progress');
+
+var Module = {
+  print: (function() {
+    var element = document.getElementById('output');
+    if (element) element.value = ''; // clear browser cache
+    return function(text) {
+      if (arguments.length > 1) text = Array.prototype.slice.call(arguments).join(' ');
+      console.log(text);
+      if (element) {
+        element.value += text + "\n";
+        element.scrollTop = element.scrollHeight;
+      }
+    };
+  })(),
+  canvas: (() => {
+    var canvas = document.getElementById('canvas');
+
+    // As a default initial behavior, pop up an alert when webgl context is lost. To make your
+    // application robust, you may want to override this behavior before shipping!
+    // See http://www.khronos.org/registry/webgl/specs/latest/1.0/#5.15.2
+    canvas.addEventListener("webglcontextlost", (e) => { alert('WebGL context lost. You will need to reload the page.'); e.preventDefault(); }, false);
+
+    return canvas;
+  })(),
+  setStatus: (text) => {
+    if (!Module.setStatus.last) Module.setStatus.last = { time: Date.now(), text: '' };
+    if (text === Module.setStatus.last.text) return;
+    var m = text.match(/([^(]+)\((\d+(\.\d+)?)\/(\d+)\)/);
+    var now = Date.now();
+    if (m && now - Module.setStatus.last.time < 30) return; // if this is a progress update, skip it if too soon
+    Module.setStatus.last.time = now;
+    Module.setStatus.last.text = text;
+    if (m) {
+      text = m[1];
+      progressElement.value = parseInt(m[2])*100;
+      progressElement.max = parseInt(m[4])*100;
+      progressElement.hidden = false;
+    } else {
+      progressElement.value = null;
+      progressElement.max = null;
+    }
+    statusElement.innerHTML = text;
+  },
+  totalDependencies: 0,
+  arguments: ['10', '2', 'roms/rom.ch8'],
+  monitorRunDependencies: (left) => {
+    this.totalDependencies = Math.max(this.totalDependencies, left);
+    Module.setStatus(left ? 'Preparing... (' + (this.totalDependencies-left) + '/' + this.totalDependencies + ')' : 'All downloads complete.');
+  },
+  simulateKeyPressE: function() {
+    var canvas = document.getElementById('canvas');
+    canvas.focus();
+
+    canvas.dispatchEvent(new KeyboardEvent('keydown', { 'key': 'e', 'code': 'KeyE', 'keyCode': 82 }));
+  }
+};
+Module.setStatus('Downloading...');
+window.onerror = () => {
+  Module.setStatus('Exception thrown, see JavaScript console');
+  Module.setStatus = (text) => {
+    if (text) console.error('[post-exception status] ' + text);
+  };
+};
+
+document.addEventListener("keydown", (function(e) {
+    var t = document.getElementById("canvas"),
+        n = new KeyboardEvent("keydown", {
+            key: e.key,
+            code: e.code,
+            keyCode: e.keyCode
+        });
+    t.dispatchEvent(n)
+}))
+
+document.addEventListener("keyup", (function(e) {
+    var t = document.getElementById("canvas"),
+        n = new KeyboardEvent("keyup", {
+            key: e.key,
+            code: e.code,
+            keyCode: e.keyCode
+        });
+    t.dispatchEvent(n)
+}))