creep-tasks
is a plugin for your Screeps codebase which adds a concise and flexible creep.task
property to your creeps. Tasks are persistent objects that generalize the concept of "do action X to thing Y until condition Z is met" and they can save a lot of convoluted and redundant code in creep logic. A Task
object contains the necessary logic for traveling to a target, performing an action on the target, and realizing when a task is no longer sensible to continue.
creep-tasks
has been adapted from the Overmind Screeps AI.
For an overview of how Tasks work and a full API reference, please refer to the creep-tasks
Wiki.
Many Screeps bots use decision trees which run every tick to determine what a creep should be doing. Tasks streamline this process into two separate parts: task assignment and task execution. Since tasks are persistent, you only need to run decision tree logic when a creep is idle. Here's a very simple example of writing an upgrader role using tasks:
/* main.js */
let Tasks = require('creep-tasks');
// Upgraders will harvest to get energy, then upgrade the room controller
let roleUpgrader = {
newTask: function(creep) { // task assignment logic
if (creep.carry.energy > 0) {
creep.task = Tasks.upgrade(creep.room.controller);
} else {
creep.task = Tasks.harvest(creep.room.find(FIND_SOURCES)[0])
}
}
};
module.exports.loop = function () {
/* (Spawning logic would go here) */
let upgraders = _.values(Game.creeps);
for (let upgrader of upgraders) {
if (upgrader.isIdle) { // obtain a new task if the creep is idle
roleUpgrader.newTask(upgrader);
}
upgrader.run(); // run the assigned task
}
};
This repository contains simple example bots built using creep-tasks
written in JavaScript and in TypeScript. You can see more complex creep-tasks
examples in the Overmind codebase.
There are several ways to install creep-tasks
. I would recommend using npm, but depending on how your environment is set up and how much you'd like to modify the source, installing from binary or from source might work better for you.
Navigate to your project root and run npm install creep-tasks
. The npm module comes with included typings if you are using TypeScript. Use var Tasks = require('creep-tasks')
to import the Tasks module in JS or import Tasks from 'creep-tasks'
to import in TS.
- Download or copy/paste the code in
bin/creep-tasks.js
and put it in a new module. - Add
require('creep-tasks')
to yourmain.js
file outside of the main loop. - Use
var Tasks = require('creep-tasks')
wherever you need to set creep tasks.
- Download this repository and copy the
src/creep-tasks
directory to somewhere in your codebase. - Import the necessary prototypes in
main.ts
withimport 'creep-tasks/prototypes'
outside of the main loop. - Use
import {Tasks} from 'creep-tasks/Tasks'
(path to Tasks.ts) whenever you need to set creep tasks.
If you find an issue with creep-tasks
or want to leave feedback, please feel free to submit an issue. If you'd like to contribute to creep-tasks
, pull requests are also welcome!
2018.8.1:
- Version 1.3 released - adds chaining functionality with
Tasks.chain()
, addsTaskWithdrawAll
, addsnextPos
option, and fixes bugs
2018.6.29:
- Version 1.2 released - adds
TaskTransferAll
, addsoneShot
option, and fixes bugs
2018.5.1:
- Version 1.1 released - repackaged for better npm support and now with included typings
2018.4.29:
- Initial release