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The DUST client exposes a bunch of utils under the world variable name. Transactions can be called using the world.write util.

Example: Filling a bucket

1. Figure out the input parameters for the tx.

• DUST is built on MUD and so each function has its own system contract. You can see all the system interfaces here. We can see the BucketSystem interface, shows the parameters for filling a bucket are:

function fillBucket(EntityId caller, Vec3 waterCoord, uint16 bucketSlot) external;

2. Call the tx

await world.write(
  "fillBucket",
  world.utils.encodePlayer(world.sessionClient.userAddress),
  world.utils.packVec3([597, 143, -1623]),
  1
);

Right after this is called, the transaction details will be printed in the console.

You can expand on the object in the log to see more details, such as the transaction hash. eg fillBucket tx hash: 0xc3fe7fc926229b756afb2fd1cc7570c7babb4c37c28ddcc8617abed23bacc26e