AI-Generated Platformer

Enter a level theme and click Generate.

\n \n \n

\n\n\n\n`;\n}\n\n// --- BACKEND API ---\nconst app = new Hono();\n\napp.get(\"/\", async (c) => {\n const url = new URL(c.req.url);\n const action = c.req.query(\"action\");\n const theme = c.req.query(\"theme\") || \"A classic video game level\";\n\n if (action === \"generateLevel\") {\n try {\n const openai = new OpenAI();\n const completion = await openai.chat.completions.create({\n model: \"gpt-4o\",\n messages: [\n { role: \"system\", content: LEVEL_GENERATOR_PROMPT },\n { role: \"user\", content: `Level Theme: \"${theme}\"` },\n ],\n response_format: { type: \"json_object\" },\n });\n\n const aiResponse = completion.choices[0].message.content;\n\n // Treat AI as untrusted input: Validate the structure before sending\n let levelData;\n try {\n levelData = JSON.parse(aiResponse);\n // A simple validation check\n if (!levelData.playerStart || !levelData.platforms || !levelData.enemies) {\n throw new Error(\"Invalid level structure from AI.\");\n }\n } catch (parseError) {\n console.error(\"AI Response Parse/Validation Error:\", parseError.message);\n console.error(\"Falling back to default level. AI Response was:\", aiResponse);\n levelData = FALLBACK_LEVEL;\n }\n\n return c.json(levelData);\n } catch (error) {\n console.error(\"OpenAI API Error:\", error);\n // If AI fails, provide a safe fallback level\n return c.json(FALLBACK_LEVEL, 500);\n }\n }\n\n const sourceUrl = `https://${url.hostname}${url.pathname}`;\n return c.html(generateHtml(sourceUrl));\n});\n\nexport default app.fetch;","deleted","label",[98],"permalink","https://www.val.town/x/join/untitled-499/code/main.tsx","extension","actionData","errors"]