AI Town Simulator

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Current Town State

\n \n \n \n `);\n});\n\n// GET /api/town/state - View the current state of the town\napp.get(\"/api/town/state\", (c: Context) => {\n if (!townState) {\n townState = getInitialTownState();\n }\n return c.json(townState);\n});\n\n// POST /api/town/reset - Reset the town to its initial state\napp.post(\"/api/town/reset\", (c: Context) => {\n townState = getInitialTownState();\n return c.json({ message: \"Town has been reset.\", state: townState });\n});\n\n// POST /api/town/tick - Advance the simulation by one step\napp.post(\"/api/town/tick\", async (c: Context) => {\n if (!townState) {\n townState = getInitialTownState();\n }\n\n // We send the CURRENT state to the AI for it to decide the next actions.\n const currentStateForAI = JSON.parse(JSON.stringify(townState));\n\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: WORLD_SIMULATOR_PROMPT },\n { role: \"user\", content: JSON.stringify(currentStateForAI) }, // Send the state BEFORE the time tick\n ],\n response_format: { type: \"json_object\" },\n });\n\n const result = JSON.parse(completion.choices[0].message.content);\n const updates = result.agent_updates;\n\n // --- NOW, WE APPLY THE UPDATES AND ADVANCE TIME ---\n\n // 1. Determine the new time\n const currentTime = new Date(`2025-01-01T${townState.time_of_day}`);\n currentTime.setHours(currentTime.getHours() + 1);\n const newTime = currentTime.toTimeString().substring(0, 5);\n\n // 2. Apply the bundled updates from the AI\n for (const update of updates) {\n const agent = townState.agents.find(a => a.name === update.agent_name);\n if (agent) {\n // Add the previous action to memory before overwriting it, using the old time\n agent.memories.push(`[${townState.time_of_day}] ${agent.action}`);\n if (agent.memories.length > 10) agent.memories.shift();\n\n // Update to new state\n agent.location = update.new_location;\n agent.action = update.new_action;\n }\n }\n\n // 3. Finally, update the global time to the new time\n townState.time_of_day = newTime;\n\n return c.json(townState);\n } catch (e) {\n console.error(\"Error during town tick simulation:\", e);\n return c.json({ error: \"AI Director failed to process the town state.\" }, 500);\n }\n});\n\n// --- EXPORT THE VAL ---\nexport default app.fetch;","deleted","label","tinytown",[98],"permalink","https://www.val.town/x/real/Town/code/main.tsx","extension","actionData","errors"]