screeps/default/role.rangedAttacker.js

module.exports = {
  name: 'rangedAttacker',
  prio: 10,
  tickInit () {
    for (let room of Object.values(Game.rooms)) {
      if (!room.memory.rangedAttacker) {
        room.memory.rangedAttacker = {}
      }
      if (room.find(FIND_STRUCTURES, {filter: s => s.structureType === STRUCTURE_TOWER}).length > 0) {
        room.memory.rangedAttacker.targetCount = 0
        continue
      }
      room.memory.rangedAttacker.targetCount = Math.min(room.find(FIND_HOSTILE_CREEPS).length, 2)
    }
  },
  nextSpawn (spawn, roleCreeps) {
    for (let [roomName, roomMemory] of Object.entries(Memory.rooms)) {
      if (_.filter(roleCreeps, {memory: {room: roomName}}).length < roomMemory.rangedAttacker.targetCount) {
        return [
          [RANGED_ATTACK, MOVE, RANGED_ATTACK, MOVE, RANGED_ATTACK, MOVE, RANGED_ATTACK, MOVE, RANGED_ATTACK, MOVE],
          {room: roomName}
        ]
      }
    }
  },
  tick (creep) {
    let room = Game.rooms[creep.memory.room]
    let targetRoomName = creep.memory.room
    if (creep.memory.colony === creep.pos.roomName
        && (_.filter(Game.creeps, {memory: {role: 'healer', room: targetRoomName}, spawning: false}).length < Memory.rooms[targetRoomName].healer.targetCount
            || _.filter(Game.creeps, {memory: {role: 'attacker', room: targetRoomName}, spawning: false}).length < Memory.rooms[targetRoomName].attacker.targetCount
            || _.filter(Game.creeps, {memory: {role: 'rangedAttacker', room: targetRoomName}, spawning: false}).length < Memory.rooms[targetRoomName].rangedAttacker.targetCount)
    ) {
      if (creep.ticksToLive < 1200) {
        creep.moveTo(creep.pos.findClosestByPath(FIND_MY_SPAWNS))
      } else {
        creep.moveTo(creep.pos.findClosestByPath(FIND_FLAGS, {
          filter: el => el.name.startsWith('gather'),
          visualizePathStyle: {stroke: '#0017ff'}
        }))
      }
      return
    }
    if (!room || targetRoomName !== creep.pos.roomName) {
      creep.moveTo(new RoomPosition(25, 25, creep.memory.room))
      return
    }

    if (creep.pos.x <= 2) {
      creep.move(RIGHT)
    } else if (creep.pos.y <= 2) {
      creep.move(BOTTOM)
    } else if (creep.pos.x >= 47) {
      creep.move(LEFT)
    } else if (creep.pos.y >= 47) {
      creep.move(TOP)
    }

    let targetCreep
    if (creep.memory.lastTarget) {
      targetCreep = Game.getObjectById(creep.memory.lastTarget)
    }

    let closeAttackers = creep.pos.findInRange(FIND_HOSTILE_CREEPS, 3, {filter: c => creepIsAttacker(c)})
    if (closeAttackers.length > 0) {
      creep.moveByPath(PathFinder.search(creep.pos, closeAttackers.map(el => {return {pos: el.pos, range: 2}}), {flee: true, maxRooms: 1}).path)
      targetCreep = closeAttackers[0]
    }

    if (!targetCreep) {
      targetCreep = creep.pos.findClosestByRange(FIND_HOSTILE_CREEPS, {filter: c => creepIsAttacker(c) || c.getActiveBodyparts(CARRY) >= 2})
    }
    if (targetCreep) {
      let targetIsAttacker = creepIsAttacker(targetCreep)
      creep.memory.lastTarget = targetCreep.id
      let range = creep.pos.getRangeTo(targetCreep.pos)
      if (range <= 3) {
        creep.rangedAttack(targetCreep)
      }
      else {
        let driveByTargets = creep.pos.findInRange(FIND_HOSTILE_CREEPS, 3, {filter: c => creepIsAttacker(c) || c.getActiveBodyparts(CARRY) >= 2})
        if (driveByTargets.length > 0) {
          creep.rangedAttack(driveByTargets[0])
        }
      }
      let distanceToKeep = targetIsAttacker ? 3 : 2
      creep.moveByPath(PathFinder.search(creep.pos, [{pos: targetCreep.pos, range: distanceToKeep}], {maxRooms: 1, flee: range < distanceToKeep}).path)
    }
  },
}