Cook pasta, set aside. Heat the oil over medium heat, add onion, garlic, ginger, and chile pepper and saute 4-5 mins. Add pumpkin and water to pan and cook 15-20 mins, until pumpkin is tender. Add coconut milk, coriander, cumin, thyme, white pepper, nutmeg, allspice, and salt and simmer anoterh 4-5 mins. Place in food processor and process until smooth. Heat remaining oil and pepper, mushrooms, and zucchini. Saute 5 mins. Add corn and broccoli and saute 2 mins. Pour pumpkin sauce into skillet and stir. Bring to a simmer. Cook 1 minute; add pasta. Serve steaming.