Final answer:
The character Pi has not consumed any food but is allowed to drink water according to the text provided.
Step-by-step explanation:
The quote from the text suggests that Pi, the character being addressed, has experienced hunger but has not eaten anything yet. The other character, Venters, acknowledges the feeling of hunger but advises against eating immediately, though water may be consumed. 'But you mustn't eat. You can have all the water you want, but no food just yet.' This indicates that while Pi may be thirsty and is allowed to drink, there hasn't been any consumption of food up to this point in the narrative.