From 4df6e7bac00db391c2e1b2c36a98f91f15f2124d Mon Sep 17 00:00:00 2001
From: Reimar <mail@reim.ar>
Date: Sat, 11 Oct 2025 21:00:15 +0200
Subject: [PATCH] allow running code in console

---
 index.html                |  1 +
 src/code_runner.js        | 37 ++++++++++++++++++++++++++++++++++++-
 src/index.js              | 11 +++++++++++
 src/playground_console.js | 10 ++++++----
 style.css                 | 12 +++++++++++-
 5 files changed, 65 insertions(+), 6 deletions(-)

diff --git a/index.html b/index.html
index 8d0ec6c..2567be4 100644
--- a/index.html
+++ b/index.html
@@ -75,6 +75,7 @@
                     <div id="console">
                         <pre><code id="console-code">Karlkode 1.0</code></pre>
                         <input
+                            id="console-input"
                             type="text"
                             placeholder=">"
                         >
diff --git a/src/code_runner.js b/src/code_runner.js
index 2bcfb42..0051079 100644
--- a/src/code_runner.js
+++ b/src/code_runner.js
@@ -3,6 +3,7 @@ export class CodeRunner {
         this.console = console;
         this.codeStopper = codeStopper;
         this.isRunning = false;
+        this.evalScope = {};
 
         window.playgroundConsole = this.console;
     }
@@ -24,7 +25,8 @@ export class CodeRunner {
         );
 
         try {
-            await import(`data:text/javascript;charset=utf-8,${encodedText}`);
+            const module = await import(`data:text/javascript;charset=utf-8,${encodedText}`);
+            this.evalScope = Object.assign(this.evalScope, module);
         } catch (error) {
             this.console.error(error);
         }
@@ -43,4 +45,37 @@ export class CodeRunner {
             this.run();
         }
     }
+
+    evaluateCode(code) {
+        // Move evalScope to window
+        const oldWindow = {};
+        for (const prop in this.evalScope) {
+            if (!this.evalScope.hasOwnProperty(prop)) continue;
+
+            oldWindow[prop] = window[prop];
+            window[prop] = this.evalScope[prop];
+        }
+
+        // Evaluate code
+        const func = new Function(`"use strict";return ${code}`);
+
+        try {
+            const result = func();
+
+            this.console.log(result);
+        } catch (e) {
+            this.console.error(e);
+
+            if (e instanceof ReferenceError) {
+                this.console.info("Note: use `export` to allow use of variables within the console");
+            }
+        }
+
+        // Restore old window props
+        for (const prop in oldWindow) {
+            if (!oldWindow.hasOwnProperty(prop)) continue;
+
+            window[prop] = oldWindow[prop];
+        }
+    }
 }
diff --git a/src/index.js b/src/index.js
index a6a342a..f703e29 100644
--- a/src/index.js
+++ b/src/index.js
@@ -66,6 +66,7 @@ const saveJsButton = document.querySelector("#save-js");
 const saveHtmlButton = document.querySelector("#save-html");
 const saveKarlkoderButton = document.querySelector("#save-karlkoder");
 const toggleSpriteEditorButton = document.querySelector("#toggle-sprite-editor-button");
+const consoleInput = document.querySelector("#console-input");
 
 const sessionSaveDebounce = new Debounce(1000);
 editor.addEventListener("change", () => {
@@ -217,3 +218,13 @@ saveKarlkoderButton.onclick = () => {
 };
 
 toggleSpriteEditorButton.addEventListener("click", () => spriteEditor.toggleEditor());
+
+consoleInput.onkeydown = (ev) => {
+    if (ev.key !== "Enter") return;
+
+    const code = ev.target.value;
+    ev.target.value = "";
+
+    codeRunner.evaluateCode(code);
+};
+
diff --git a/src/playground_console.js b/src/playground_console.js
index 06b4c42..b3b510f 100644
--- a/src/playground_console.js
+++ b/src/playground_console.js
@@ -5,28 +5,30 @@ export class PlaygroundConsole {
 
     log(text) {
         const el = document.createElement("span");
-        el.textContent = `\n${text}\n`;
+        el.className = "log";
+        el.textContent = "" + text;
+        el.dataset.type = typeof text;
         this.elem.appendChild(el);
     }
 
     error(text) {
         const el = document.createElement("span");
         el.className = "error";
-        el.textContent = `\n${text}\n`;
+        el.textContent = "" + text;
         this.elem.appendChild(el);
     }
 
     debug(text) {
         const el = document.createElement("span");
         el.className = "debug";
-        el.textContent = `\n${text}\n`;
+        el.textContent = "" + text;
         this.elem.appendChild(el);
     }
 
     info(text) {
         const el = document.createElement("span");
         el.className = "info";
-        el.textContent = `\n${text}\n`;
+        el.textContent = "" + text;
         this.elem.appendChild(el);
     }
 }
diff --git a/style.css b/style.css
index 2ba6b2d..2933c91 100644
--- a/style.css
+++ b/style.css
@@ -104,6 +104,12 @@ div#buttons button {
     overflow-y: hidden;
 }
 
+#console-code {
+    display: flex;
+    flex-direction: column;
+    gap: 5px;
+}
+
 #console pre {
     color: white;
     background-color: black;
@@ -126,10 +132,14 @@ div#buttons button {
     color: #D32F2F;
 }
 
-#console .info, #console .debug {
+#console .info, #console .debug, #console .log[data-type=undefined] {
     color: #BDBDBD;
 }
 
+#console .log[data-type=number] {
+    color: #1976D2;
+}
+
 #console input {
     width: 100%;
     margin: 0;