@screeps/engine/dist/processor/intents/creeps/keepers/pretick.js

This is a module for Screeps standalone server. See [main repository](https://github.com/screeps/screeps) for more info.

'use strict';

const _ = require('lodash'),
      utils = require('../../../../utils'),
      driver = utils.getDriver(),
      C = driver.constants,
      fakeRuntime = require('../../../common/fake-runtime');

module.exports = function (creep, scope) {
    const roomObjects = scope.roomObjects,
          bulk = scope.bulk;


    let source = undefined;
    let resources = [];
    let hostilesInMeleeRange = [];
    let hostilesInRangedRange = [];

    const intents = {
        list: {},
        set(id, name, data) {
            this.list[id] = this.list[id] || {};
            this.list[id][name] = data;
        }
    };

    _.forEach(roomObjects, function (object) {
        if (object.type == 'source' || object.type == 'mineral') {
            resources.push(object);
        }
        if ((object.type == 'creep' || object.type == 'powerCreep') && object.user != 2 && object.user != 3) {
            const distance = utils.dist(creep, object);
            if (distance <= 1) {
                hostilesInMeleeRange.push(object);
            }
            if (distance <= 3) {
                hostilesInRangedRange.push(object);
            }
        }
    });

    if (creep.memory_sourceId && !!roomObjects[creep.memory_sourceId]) {
        source = roomObjects[creep.memory_sourceId];
    }

    if (!source) {
        source = _.find(resources, o => utils.dist(creep, o) <= 5);
        if (source) {
            bulk.update(creep, { memory_sourceId: source._id.toString() });
        }
    }

    if (source && utils.dist(source, creep) > 1) {
        const direction = fakeRuntime.moveTo(creep, source, { range: 1, reusePath: 50 }, scope);
        if (direction > 0) {
            intents.set(creep._id, 'move', { direction });
        } else {
            bulk.update(creep, { memory_move: null });
        }
    }

    const meleeTarget = _.min(hostilesInMeleeRange, 'hits');
    if (meleeTarget) {
        intents.set(creep._id, 'attack', { id: meleeTarget._id, x: meleeTarget.x, y: meleeTarget.y });
    }

    if (_.some(hostilesInRangedRange)) {
        const damageByRange = [10, 10, 4, 1];
        const massDamage = _.sum(hostilesInRangedRange, c => damageByRange[utils.dist(creep, c)]);
        if (massDamage > 13) {
            intents.set(creep._id, 'rangedMassAttack', {});
        } else {
            const rangedTarget = _.min(hostilesInRangedRange, 'hits');
            intents.set(creep._id, 'rangedAttack', { id: rangedTarget._id });
        }
    }

    return intents.list;
};
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