Skip to content

Add food decay #12

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
zombie-einstein merged 1 commit into from
Nov 14, 2025
Merged

Add food decay #12

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
5 changes: 5 additions & 0 deletions src/thants/generators/food.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -63,6 +63,7 @@ def __init__(
food_dims: tuple[int, int],
drop_interval: int,
drop_amount: float = 1.0,
decay_rate: float = 0.0,
):
"""
Initialise basic food generator
Expand All @@ -75,10 +76,13 @@ def __init__(
Interval at which new blocks are dropped
drop_amount
Amount of food in each cell of food blocks
decay_rate
Amount dropped food will decay each step
"""
self.food_dims = food_dims
self.drop_interval = drop_interval
self.drop_amount = drop_amount
self.decay_rate = decay_rate

def _drop_food(self, key: chex.PRNGKey, food: jax.Array) -> jax.Array:
"""
Expand Down Expand Up @@ -144,6 +148,7 @@ def update(self, key: chex.PRNGKey, step: int, food: jax.Array) -> jax.Array:
chex.Array
New food state
"""
food = jnp.maximum(food - self.decay_rate, 0.0)
return jax.lax.cond(
(step + 1) % self.drop_interval == 0,
self._drop_food,
Expand Down