Mercurial > repos > IBDev-IBBoard.WarFoundry.API

annotate API/Factories/Requirement/UnitRequiresAtLeastNUnitsRequirementFactory.cs @ 375:d9bf78a8f517

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Re #351: Add extensible requirement handling method * Wrap exception from integer parsing
author IBBoard <dev@ibboard.co.uk>
date Sat, 02 Jul 2011 15:10:17 +0000
parents 13793f3a2a2e
children e50682387d63
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1 // This file (UnitRequiresAtLeastNUnitsRequirementFactory.cs) is a part of the IBBoard.WarFoundry.API project and is copyright 2011 IBBoard
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2 //
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3 // The file and the library/program it is in are licensed and distributed, without warranty, under the GNU Affero GPL license, either version 3 of the License or (at your option) any later version. Please see COPYING for more information and the full license.
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4 using System;
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5 using IBBoard.WarFoundry.API.Objects;
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6 using IBBoard.WarFoundry.API.Objects.Requirement;
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7
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8 namespace IBBoard.WarFoundry.API.Factories.Requirement
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9 {
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10 public class UnitRequiresAtLeastNUnitsRequirementFactory
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11 {
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12 public UnitRequiresAtLeastNUnitsRequirementFactory()
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13 {
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14 //Do nothing special
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15 }
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17 public UnitRequiresAtLeastNUnitsRequirement CreateRequirement(UnitType type, string data)
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18 {
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19 UnitRequiresAtLeastNUnitsRequirement req = new UnitRequiresAtLeastNUnitsRequirement(type);
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20 Race race = type.Race;
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21 AddRequirements(req, race, data);
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22 return req;
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23 }
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25 private void AddRequirements(UnitRequiresAtLeastNUnitsRequirement req, Race race, string data)
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26 {
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27 foreach (string requirement in data.Split('|'))
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28 {
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29 string[] requirementParts = requirement.Split(':');
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30 string unitID = requirementParts[0];
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31 UnitType unitType = race.GetUnitType(unitID);
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33 if (unitType == null)
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34 {
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35 throw new InvalidRequirementException(String.Format("Invalid unit type '{0}' for 'Requires at least N units' requirement", unitID));
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36 }
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37
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38 if (requirementParts.Length == 2)
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39 {
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40 string amount = requirementParts[1];
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41
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42 try
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43 {
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44 req.AddUnitTypeRequirement(unitType, Int32.Parse(amount));
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45 }
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46 catch (FormatException ex)
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47 {
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48 throw new InvalidRequirementException(String.Format("Invalid amount '{0}' for unit type '{1}' for 'Requires at least N units' requirement", amount, unitID));
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49 }
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50 }
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51 else
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52 {
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53 req.AddUnitTypeRequirement(unitType);
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54 }
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55 }
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56 }
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