Create app.py

app.py

@@ -0,0 +1,65 @@
+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+import numpy as np
+import random
+from typing import Dict, List
+import uvicorn
+
+app = FastAPI()
+
+# Enable CORS for browser access
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+# Mock InstantMesh (replace with real model later)
+def generate_mesh(chunk_x: int, chunk_z: int) -> List[List[float]]:
+    chunk_size = 5
+    mesh = np.zeros((chunk_size, chunk_size))
+    prompt = "rocky hill" if random.random() > 0.5 else "flat plains"
+    if "hill" in prompt:
+        mesh[2, 2] = random.randint(2, 5)
+        for i in range(chunk_size):
+            for j in range(chunk_size):
+                dist = np.sqrt((i - 2)**2 + (j - 2)**2)
+                mesh[i, j] = max(0, 5 - dist)
+    else:
+        mesh = np.ones((chunk_size, chunk_size)) * random.uniform(0, 1)
+    return mesh.tolist()
+
+# Game state
+class Game:
+    def __init__(self):
+        self.player_pos = [0, 0]  # [x, z]
+        self.world: Dict[tuple, List[List[float]]] = {}
+        self.chunk_size = 5
+
+    def get_chunk_coords(self, x: int, z: int) -> tuple:
+        return (x // self.chunk_size, z // self.chunk_size)
+
+    def generate_chunk(self, chunk_x: int, chunk_z: int):
+        key = (chunk_x, chunk_z)
+        if key not in self.world:
+            print(f"Generating chunk at {key}")
+            self.world[key] = generate_mesh(chunk_x, chunk_z)
+        return self.world[key]
+
+game = Game()
+
+@app.get("/move")
+async def move(dx: int = 0, dz: int = 0):
+    game.player_pos[0] += dx
+    game.player_pos[1] += dz
+    chunk_x, chunk_z = game.get_chunk_coords(game.player_pos[0], game.player_pos[1])
+    chunk = game.generate_chunk(chunk_x, chunk_z)
+    return {
+        "player_pos": game.player_pos,
+        "chunk": chunk,
+        "chunk_coords": [chunk_x, chunk_z]
+    }
+
+if __name__ == "__main__":
+    uvicorn.run(app, host="0.0.0.0", port=8000)