gistfile1.py

# coding: utf-8

field = [
	{'cost': 10, 'prod': 2, 'time': 3},
	{'cost': 20, 'prod': 3, 'time': 4}
]

total_resource, base_production, total_time = 0, 1, 0
lvl = 0
required_lvl = len(field)
while True:
	if total_resource - field[lvl]['cost'] < 0:
		total_time, total_resource = total_time + 1, total_resource + base_production
		print 'continue tic', total_resource, total_time, base_production
		continue
	total_resource -= field[lvl]['cost'] # вычитаем стоймость постройки
	total_time += field[lvl]['time'] # время строительства
	total_resource += field[lvl]['prod'] * field[lvl]['time'] # ресурсы, которые набегут за время строительства
	base_production += field[lvl]['prod']
	lvl += 1
	print 'build tic', total_resource, total_time, base_production

	if lvl == required_lvl:
		break