Software Requirements & Specification
Contents
1. 4 1 I SOR MMC ACES ME RR SR RR Re 18 4 2 Hardware Interfaces ccccceccccceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeteg 18 4 3 Software Interfaces asennad 19 4 4 Communications Interfaces ss ee RA ee ee ee RA 19 5 Other Non functional Requirements esse 20 5 1 Performance Requirements ERA AANRAAK ee es 20 5 2 Safety Requirements vos EE Ri GEE Ge 20 5 3 Security Requirements SEE SE GSS Saas auade 21 5 4 Software Quality Attributes RE SEGE see 21 35 BUSINESS RUES EA EEEE Ge ee 22 6 KeyMilestonesS sees eek ee ee ee ee ee ee 23 7 Key Resource Reduirements sees ee 24 Software Reguirements Specification for Astro Page 4 Revision History Name Date Reason For Changes Version Software Reguirements Specification for Astro Page 5 1 Introduction 1 1 Purpose The purpose of this document is to provide comprehensive reguirements and goals for the rogue like video game Astro This document helps the reader to visualize the intent of the developers and how they expect the program to run and react to input from the player Astro is intended to provide entertainment to players through strategic game play involving intense combat and limited resources 1 2 Document Conventions This document will be written in Arial font The priority of certain features and or requirements will be identified using tags in the beginning of the feature requirement s description While some2. etc This would be most helpful to players who have never played Astro or any game that is a rogue like genre 5 4 5 Keyboard Use Attribute Multiple keys are not pressed at a time and time is not a factor since nothing in the game happens unless a turn is taken Reasoning Usability is shown since it allows for user with limiting physical abilities such as with difficulties with arm hand movement or are slower in movements to play with more ease This is allows for an even broader base of people we can have as players Attribute Key mapping the ability to change what a key does in the game will be a feature Reasoning This is a feature of most rogue likes and will allow for those who prefer one set of keys to play the game to find Astro more user friendly This is something that will allow customizability for the user 5 5 Business Rules Roles will be shared among the members of the group Specific tasks will be delegated throughout the development process Each will have different roles and parts of the product they will have to work on and maintain These can include Art and Graphics Map amp Rendering Item Inventory Actor Development User Interface Testing Any major decision in terms of the game development must be discussed and decided among the members of the group There must be a general majority consensus for decisions that have resulted in conflict Software Reguirements Specification for Astro Page 23 6
3. played session a feature that many players would prefer Attribute The user will be able to save the game during any point of play Reasoning Flexibility is added since Astro is allowing players to leave the game and come back to it at any time which is something the player will be looking for Attribute Save files for Astro are small enough to be transferred between computers that have the game installed Reasoning The game has portability since you can continue playing the same game on any computer that has the game installed which is something that may be desired by the player 5 4 2 Mapping System Attribute The mapping system will have both pre made maps and randomly generated maps Reasoning This allows for adaptability of the game play and reusability since players will always be able to experience a new gaming environment Software Reguirements Specification for Astro Page 22 5 4 3 Character Variety Attribute There are options between different choices of races classes and sub classes Reasoning Users will have new experiences when replaying the game with these choices since their choices will influence their playing strategies which is something desired by the developers 5 4 4 Tutorial and Help System Attribute There shall be a tutorial FAQ manual help system Reasoning Usability can be seen in this since this will help teach new user the controls for Astro what each weapons do how the items helpful
4. s native OS will be Windows 7 but should be playable on all Windows machines and also any machine that can run C Our software requires the use of a keyboard and optionally a mouse 2 5 Design and Implementation Constraints The game will be written in C with the libtcod library included and it will also use a rendering engine to model the graphics The computer s main memory will be utilized to store saved files so the user can play across time periods We will design it so that the game will utilize minimal memory so that it can run at a high fps Software Reguirements Specification for Astro Page 8 2 6 User Documentation There will be an optional in game tutorial that the user can opt into that will explain the basics of the game s mechanics in a safe area before they begin the game In addition to this there will be a game manual included with the exe files and a help option in the toolbar to assist the player mid game that will explain the game s specific mechanics 2 7 Assumptions and Dependencies We assume that the user has the ability to easily run C and the libtcod library in addition we assume that the user s computer can run and render basic jpeg gif and png files dynamically to facilitate the playing of our game Also the ability of the user s OS to extract and automatically run a exe file is assumed to be standard It is also assumed that the user understands English since all text contained in or
5. 3 1 1 Strength Base melee weapon damage and carrying capacity Governs axes swords and maces A large enough value may be required for some weapons and armor 3 3 1 2 Dexterity Base ranged weapon damage and combat mobility Governs laser weapons Increases accuracy with all lasers and melee weapon types Increases chance of dodging enemy attacks A large enough value may be required for some weapons 3 3 1 3 Intelligence Base tech usefulness and damage Governs cryo weapons flamethrowers telekinesis and explosives Gives bonus damage against tech based enemies Required for certain powerful weapons and tech 3 3 1 4 Vitality Base health Potency of food Resistance to astrocephaly Astrocephaly refers to the infection found on the ship Software Reguirements Specification for Astro Page 10 3 3 1 5 Priority 3 3 1 5 1 High Priority Strength and melee damage and carrying capacity dexterity and ranged damage Intelligence and grenade damage 3 3 1 5 2 Medium Priority Intelligence and flamethrower damage 3 3 1 5 3 Low Priority Hit and miss chance intelligence and bonus damage versus tech enemies 3 3 1 6 System Stimulus Response Sequences The player may increase these statistics by completing appropriate actions in the game such as defeating enough enemies to level up or collecting items that provide bonuses By viewing the character information window the player may learn the numerical values associated to their v
6. Actors refer to any object in the game which can be represented with a tile on the map Software Reguirements Specification for Astro Page 14 3 5 4 Movement and Turn Initiative 3 5 4 1 Description Priority The turn initiative system will determine the order of which enemies are able to act Each action holds a cost An actor capable of smaller actions will have a higher frequency of turns This system has a very high priority because it is necessary for combat for game play 3 5 4 2 Stimulus Response Sequences After a player presses any command key the player character will immediately preform the entered command The player s next turn will not occur until the delay from the cost of the command is completed Meanwhile every actor with a action cost less than the player s will be able to perform their actions Every actor with larger cost actions will have their current action cost reduced by the player cost amount 3 5 4 3 Functional Requirements e Req The game shall have actors with which to move e Req The game shall have actions with costs e Req Actions will determine the turn order of actors 3 6 Dungeon Generation 3 6 1 Description Priority The layout of each level will be randomly generated from an algorithm Dungeon creation is high priority due to the game requiring a dungeon to function 3 6 2 Stimulus Response Sequences When a level is accessed for the first time rooms will be created with a chance of bein
7. Key Milestones SRS Document 01 21 14 Rough draft to be done by 01 18 to allow time for polishing 2 SDD Document 01 27 14 Rough draft to be done by 01 25 to allow time for polishing 3 Scrum Sprint 1 End 02 23 14 Create presentation following 02 17 to be shown 02 24 Scrum Sprint 2 End 03 30 14 Create presentation following 03 24 to be shown 03 31 Scrum Sprint 3 End 04 27 14 Finalize software package and create presentation to be shown 05 01 Es Software Festival 05 01 14 Project complete Software Reguirements Specification for Astro 7 Key Resource Reduirements Maijor Project Activities User interface design Graphical tile support Class and race system Procedural map generation Robust save system Item and inventory system Non player character Al Complete combat system User help system Skill Expertise Required C and libtcod Photoshop SDL OpenGL libtcod and C C and libtcod Data Structures C and libtcod C and libtcod C and libtcod C and libtcod C and libtcod C libtcod and writing Internal Resource The group has previous experience with C and data structures Shane E has digital graphic design experience The group has previous experience with C and data structures The group has previous experience with C and data structures The group has previous experience with C and data structures The group has
8. and general software quality 1 Rogue like refers to a genre of role playing games with tile based graphics perma death and random level generation Software Reguirements Specification for Astro Page 6 e Section 6 Key Milestones section covers the dates of major events that will influence the development process of Astro These are also dates that the product will be presented and the product will be under evaluation at that time e Section 7 Key Resource Requirements section lists the different skills and abilities needed to complete the project such as which types of languages will need to be known to develop the product and those in our group who can accomplish each task 1 5 Project Scope This software will be a stand alone desktop video game that will be used for entertainment purposes The goal of this project is to provide a user with a leisurely but challenging gaming experience that will grab and hold their attention and interest as well as intellectually stimulate them The game will be two dimensional with a simplistic graphics engine and feature a robust turn based combat system This software is intended to be delivered as a freeware open source product to interested players with the intent that savvy users could modify the source code to suit their own needs so long as they provide attribution to the original creators the authors of this document 1 6 References e The C Resources Network http www cplusplus
9. attack reduce the recipient s health the factors that reduce the health are the strength of the weapon the strength of the user and the recipient s defense 3 5 1 3 Functional Requirements e Req The game shall allow movement thus facilitating attack e Req The game shall allow items to be used as weapons in melee combat e Req The game shall allow enemies to move and attack as well e Req The game shall allow the comparison of character statistics e Req The game shall allow the removal of health and death Software Reguirements Specification for Astro Page 13 3 5 2 Ranged combat 3 5 2 1 Description Priority The ranged combat system will consist of the standard rogue like ranged combat engine which is described as such highlighting a tile to attack and drawing a vectored line to cover the damage area This is a high priority feature although it is less critical to the project s completion than melee combat 3 5 2 2 Stimulus Response Sequences The ranged combat will be instigated when the player presses the fire button and begins the firing sequence This will display a range of certain tiles that can be selected for attack The player selects one tile to attack and then a vectored line will display between the center of the player s tile and the center of the designated tile any tile covered by this line will take the damage indicated by the weapon being used minus the defense of the recipient 3 5 2 3 F
10. concerning Astro will be written in this language 3 System Features 3 1 Keyboard input 3 1 1 Description and Priority Many keys including the arrow keys and number pad will be utilized to control the interaction between the player and the game This is of extremely high priority 3 1 2 Stimulus Response Sequences When the user presses a key such as the g key which corresponds to item pick up a corresponding action will be undertaken by the player s character The keys and the actions which have been mapped to them shall be explained to the player in a game manual and many of the basic functions may be covered in a tutorial level for the player 3 1 3 Functional Requirements e Req When the player presses an action key the game shall consistently carry out the appropriate action e Req The game shall provide the player with the opportunity to learn the action associated with each key Software Reguirements Specification for Astro Page 9 3 2 Game Display 3 2 1 Description Priority Below is the game display model It has a high priority Player Stas Ey Current Gamespace Map woCharacter area Console Tile ii 3 2 2 Stimulus Response System The display will appear when a game is initiated 3 2 3 Functional Reduirements e Req The game shall display player stats inventory console and tile information during game play 3 3 Character Progression System 3 3 1 Character Statistics 3
11. features may be listed earlier than others this is merely the nature of the document and as such there is no implicit emphasis or priority in the order presented Any priority a feature may be assigned by the developers shall be made explicit in the feature description This document may make references to a project software package or game These and any similar phrases shall be made in reference to Astro the project which this document describes Any terms the reader may not be familiar with may be defined with footnotes on the page that they first appear 1 3 Intended Audience and Reading Suggestions This document is intended for all those involved in the development of the Astro project as well as anyone who is interested in the developmental features involved with the Astro project 1 4 Document Sections e Section 2 Provides a summary of the project focusing on a list of features and the way the game shall operate This provides a high level description of the project e Section 3 Provides an in depth view of each feature of the project giving more detail to each topic covered in Product Features in Section 2 e Section 4 This section covers the External Interface Requirements to fully utilize this game such as a monitor keyboard or perhaps other system hardware e Section 5 This section describes the Nonfunctional Requirements that this game shall strive to meet such as performance security safety
12. previous experience with C and data structures The group has previous experience with C and data structures The group has previous experience with C and data structures The group has previous experience with C and data structures External Resource Libtcod documentation SDL OpenGL and libtcod documentation Libtcod documentation Libtcod documentation Libtcod documentation Libtcod documentation Libtcod documentation Libtcod documentation Libtcod documentation Page 24 Issues Constraints SDL and OpenGL are new technologies for the group Game play balance must be taken into account Save file system must meet file size requirements Someone new to the game is needed for feedback
13. Astro Software Reduirements amp Specification Prepared by Team Astro Aaron Ryan Shane Garret Shane Meghan Wesley Mitchell Version 1 5 approved 1 20 2014 Software Reguirements Specification for Astro Page 2 Ee ales de op a EE d 1 ATCO UC OM ses EE GEE EE de Ee 5 lol calf ale kes Ee 5 1 2 DOGUMENECONVEINONS EE GR 5 1 3 Intended Audience and Reading Suggestions see ee 5 1 4 Document Seel cane ace ee re eee et 5 1 5 Sifo sel ielc 0s nt 6 TO REIOTONCES SARA RSG ee es 6 2 Overall Description ee ee RR RR EE 7 2 1 Product Perspective Ms Ee enne 7 2 OWE lire ACS EES a 7 2 3 User Classes and CharacteristiCs cc cccccceeeeeeeeeeeeeeceeeeeeeeeeeeeteeeeeaas 7 2 4 Operating Environment oe ESEG EG RR Ge ee 7 2 5 Design and Implementation ConstraintS ss ee ee Re 7 2 6 Userbeeamentalio ase GAS 8 2 7 Assumptions and Dependencies ee 8 3 System Feature si ks see Ee De Ee 8 3 1 Keyboard INDU iissssss ss ERGE DEE EE EE DE EE EE EE EE EE EE EE EE EE ee Ee 8 32 Game DISPlay ee 9 3 3 Character Progression SYSTEM REEKSE EER EE RR ER RR 9 SERS NE AA N 12 3 5 Combat System Movement ss see ee ee ee 12 3 6 Dungeon Geeta Oi presse specs nenne eet 14 3 7 User Help System ee ee ee 14 3 8 Interactive environment ee ee ee ee ee ee ee ee ee ee ee ee 15 Software Reguirements Specification for Astro Page 3 4 External Interface Requirements 18
14. arious statistics 3 3 1 7 Functional Requirements e Req The game shall adjust the player s abilities or lack thereof according to the player character s statistics through various mathematical formulae e Req The game shall provide the player with the means to increase these statistics by collecting items and completing other such relevant tasks e Req The game shall allow the player to view these statistics in the character information window 3 3 2 Health mechanics 3 3 2 1 Natural regeneration Characters passively regenerate health every turn capped at 50 maximum health Armor may modify the rate and cap 3 3 2 2 Health Decreases When the player gets hit by an enemy he or she loses health represented by a red bar Astrocephaly will also decrease health over time 3 3 3 Races amp Classes Descriptions Priorities System Stimulus Response Sequences Functional Requirements 3 3 3 1 Races e Human Base class Flat starting stats with no innate specialization Adequate at everything Ability Greed doubles the chance of money drops for 10 turns Requires many kills to refresh e Robots High starting vitality strength and intelligence Cannot wear armor or eat food Ability Consume Armor destroys armor for small health regeneration e Aliens High base dexterity and intelligence Low base vitality Ability Consume Corpse eliminates corpses for small health regeneration 3 3 3 2 Classes amp Subclasses
15. ch time will be quick 5 2 Safety Requirements 5 2 1 External System Integrity Requirement The game will not be able to open create edit or delete any non game related files and will run in isolation to other unrelated processes that are operating concurrently Justification This will help to prevent Astro from causing any damage to the computer or its internal components Software Reguirements Specification for Astro Page 21 5 2 2 Save File Integrity Requirement Upon a game crash user s progress will be reverted to the earliest save prior the crash Justification This will minimize the loss of user s data that occurs after a crash and the implementation of auto saves additionally aid to minimize data loss 5 3 Security Requirements 5 3 1 Online and Multi Player Functionality Requirement Astro is a single player game with no online or multi player functionality Justification There are very low to non existent security risks while playing Astro 5 3 2 Preventing Save File Manipulation Requirement Save files used in the game will be compressed so they become illegible to users Justification To essentially create a black box which prevents users or other parties from manipulating save files to prevent possible cheating 5 4 Software Quality Attributes 5 4 1 Save Files Attribute The user will be able to load their previous save files Reasoning This adds replayability as it allows the player to resume a previously
16. com e Libtcod Documentation http doryen eptalys net data libtcod doc 1 5 1 index2 html e Libtcod Developer s Hompage maintained by Jice http doryen eptalys net libtcod Libtcod C Tutorial for those interested in the library http codeumbra eu complete rogue like tutorial using c and libtcod part 1 setting up Software Reguirements Specification for Astro Page 7 2 Overall Description 2 1 Product Perspective Our software package will be a stand alone videogame in the rogue like genre set ina futuristic sci fi environment It will feature a story summarized thusly A classified military space station has gone dark and the mission is to retrieve information including the ship s black box as well as other info about why and what they were doing 2 2 Product Features In addition to the story outlined in the previous section it will have e Graphics Class and Character Progression System Procedurally Generated Environments Perma death Saving Tutorial and Help System Monster Combat System Item and Inventory System 2 3 User Classes and Characteristics Expected users are anyone with a computer with a desire to play video games and more specifically those who enjoy rogue like video games Our game will require some general knowledge about rogue likes but will include a tutorial to make it accessible to most users easily 2 4 Operating Environment Our game will be developed on and for Windows machines in C It
17. e Marine Combat focused specialties Starts with gun with cheap parts Ability Barricade drops a small wall to block a hallway that lasts two turns Requires many kills to refresh o Infantry 10 more laser weapon damage o Medic Intelligence increases chance of keeping a health pack after using it o Quartermaster Starts game with 3 blank key cards These can be used to open any locks Can hold 3 additional items at the start of the game Software Reguirements Specification for Astro Page 11 e Explorer Utility based specialties Starts with a combat knife Have more starting vision distance Ability Flare Shoots a pen flare giving vision surrounding a line until it hits a wall or enemy Requires a few kills to refresh o Survivalist Takes 1 less damage from all sources o Pirate Corpses have a higher chance of dropping loot o Merchant Takes 1 more damage from all sources Starts with one grenade one health pack and one food e Mercenary Narrowly focused classes Start with 3 grenades Ability Dash Gives a free move without using a turn Requires many kills to refresh o Assassin Has half health calculated after bonuses Deals double damage Starts with a sword and 5 throwing knives o Brute Has extra starting vitality Starts with 6 bonus grenades and a mace o Hacker Can hack vending machines for lower prices Increased damage against robots Has bonus intelligence at start of game Starts with tas
18. er 3 3 3 3 Priority of Races and Classes e High Priority Human race Marine class and Infantry subclass e Medium Priority Explorer class Survivalist subclass Mercenary class Assassin subclass e Low Priority all other races classes and subclasses 3 3 3 4 System Stimulus Response Sequences The player upon starting a new game can navigate a series of character creation menus to create a character of a selected race and class The game shall also allow the player to select skills from a menu that they wish to increase upon leveling up This shall be facilitated by using the keyboard arrow keys to navigate the menus and the Enter key to make menu selections 3 3 3 5 Functional Requirements e Req The game shall allow the player to choose a race and class combination from the available options e Req Likewise the game shall allow the palyer to choose skills into which they can allocate points upon leveling up e Req The game shall provide consequences both positive and negative for choosing a particular combination of race class and skills over another Software Reguirements Specification for Astro Page 12 3 4 Save System 3 4 1 Saving 3 4 1 1 Description Priority The save system will feature both user created save file and autosave files which store character progression The game will autosave when entering a new level deck and when exiting the game Users will also be able to save at any poin
19. g chosen from a pre made set Corridors and hallways will attach the rooms Limits will be placed in the generation to prevent inaccessible and overlapping rooms 3 6 3 Functional Requirements e Req The game shall generate levels when they are first accessed e Req The dungeon generation will have parameters 3 7 User Help System 3 7 1 In Game Tutorial 3 7 1 1 Description Priority The in game tutorial will be an option tutorial that will be comprised of a small in game level most likely a small space ship that will teach the player the basics of the inventory system combat system and movement system The priority of this tutorial would be below the basic features of the game as they would have to be implemented prior the tutorial 3 7 1 2 Stimulus Response Sequences The player will be able to access tutorial via the main menu 3 7 1 3 Functional Requirements e Req The tutorial shall let a player exit it at any point Software Reguirements Specification for Astro Page 15 3 7 2 User Manual 3 7 2 1 Description Priority This will be a textual manual that explains the mechanics of the game and it will be accessible as both a document included in the game files as well as an in game help menu This will also explain key binding This has a priority just below that of the in game tutorial 3 7 2 2 Stimulus Response Seduences The in game help menu shall be activated during a game via the menu 3 7 2 3 Functional Requi
20. have an attachment system that allows the user to select different stats for the weapon or different scatter patterns This is of high priority because without it the player cannot attack 3 8 1 1 2 Stimulus Response sequences The player will find weapons and ammunition lying around the map and will be able to pick them up via the inventory and equip using the equipment screen 3 8 1 1 3 Functional Requirements e Req The game shall have a pickup system e Req The game shall have an inventory system e Req The game shall have an equipping system Software Reguirements Specification for Astro Page 16 3 8 1 2 Armor 3 8 1 2 1 Description Priority The armor in game will be equippable items that allow the user different levels of protection by way of armor class and stat manipulation This is of medium priority as it allows for more in depth gameplay 3 8 1 2 2 Stimulus Response sequences Much like with weapons the user will find armor lying around and equip it via the equipment screen 3 8 1 2 3 Functional Requirements e Req The game shall have a pickup system e Req The game shall have an inventory system e Req The game shall have an equipping system 3 8 1 3 Tech 3 8 1 3 1 Description Priority Tech is any item that does not fit into a weapon armor category and is not used for health regeneration This includes items such as pen flares grenades etc This is of medium priority because it allows in depth play but
21. is not critical 3 8 1 3 2 Stimulus Response sequences Much like the weapons the user will find tech lying around and equip it via the equipment screen 3 8 1 3 3 Functional Requirements e Req The game shall have a pickup system e Req The game shall have an inventory system e Req The game shall have an equipping system 3 8 1 4 Health items 3 8 1 4 1 Description Priority The health items will have two categories health kits and food items The health kits will instantly restore a portion of the player s health upon use while food will regenerate health over a certain amount of time at a certain rate Implementing health items is of medium priority 3 8 1 4 2 Stimulus Response sequences Much like with weapons the user will find health items lying around and equip it via the equipment screen 3 8 1 4 3 Functional Requirements e Req The game shall have a pickup system e Req The game shall have an inventory system e Req The game shall have an equipping system 3 8 1 5 General Inventory Mechanic 3 8 1 5 1 Description Priority The inventory system will be a sidebar on the screen that will list the items that the user has access to This is a high priority 3 8 1 5 2 Stimulus Response sequences The user can open the inventory with the i key or clicking the sidebar The user may then select the item he she wants from the menu with the letter corresponding to it Software Reguirements Specification for Ast
22. n for Astro Page 20 5 Other Non functional Reduirements 5 1 Performance Reduirements 5 1 1 Frame rate Requirement Astro shall execute graphics at least 20 fps frames per second Justification High frame rate is not necessary for a turn based role playing game however since the game is terminal based and not graphically intensive a higher fps is not out of the question 5 1 2 Processing Power Requirement Astro will only a require a 20 mhz processor to run smoothly Justification Astro is a terminal based game and will not require much processing power 5 1 3 Executable Size Requirement The size of Astro s executable will be less than one gigabyte Justification The entire libtcod library is less than 15 megabytes and the game is programmed in C so this is not an unreasonable limitation 5 1 4 Save File Size Requirement Astro s individual save files will not exceed 10 megabytes Justification The save files are compressed text files so it inconceivable for them to fail to meet this requirement 5 1 5 In game Load Times Requirement Astro s load time between levels will be near instantaneous Justification Astro s is graphically minimalistic so loading new levels will not be time consuming 5 1 6 Launch Time Requirement The time to reach the main menu upon launching the game will not exceed 10 seconds Justification Since Astro s size is required to be small and played via the terminal laun
23. rements e Req The game shall provide a textual manual which the player can navigate explaining core mechanics of the game as well as which actions have been bound to which action keys e Req The game shall also be distributed with a text file that contains the text found within the in game help menu 3 7 3 In Game Tile Info Tool 3 7 3 1 Description Priority This window will display relevant tile information to the player Items and enemies located on the selected tile as well as possibly the infection level and oxygen level of the selected tile 3 7 3 2 Stimulus Response Sequences The player shall indicate a tile either by moving onto it or choosing the tile with the look function and the game shall display the relevant info in the appropriate area in the game display 3 7 3 3 Functional Requirements e Req The game shall store relevant tile information to be retrieved at the player s will e Req The game shall display this information in a manner that is understandable by the player on the game display e Req The game shall restrict the player s access to tile information concerning tiles that they have yet to explore 3 8 Interactive environment 3 8 1 Inventory System 3 8 1 1 Weapons ammunition 3 8 1 1 1 Description Priority The weapons in the game are summarized in two sections melee requiring adjacency to attack and ranged which can be fired from a distance and hurt multiple enemies Ranged weapons will
24. ro Page 17 3 8 1 5 3 Functional Requirements e Req The game shall have an inventory system Req The game shall have an equipping system Req The game shall have a sidebar screen Req The game shall have the ability to accept user input from keyboard 3 8 2 Keycard Progression 3 8 2 1 Description Priority To get into some specialized rooms such as infirmaries armories or some special decks the player will need to find certain keycards from dead bodies to advance i e to get into the infirmary the user will need to find a doctor s keycard This is of low priority 3 8 2 2 Stimulus Response sequences The user must find and kill the appropriate character that has the keycard and then put it in his inventory and then use it to access the door it goes to 3 8 2 3 Functional Requirements e Req The game shall have a keycard system e Req The game shall have an inventory system e Req The game shall have a premade room editor Software Reguirements Specification for Astro Page 18 4 External Interface Requirements 4 1 User Interfaces The user will play the game via their monitor and the standard windowed screen display an example of the Astro main menu is displayed in Figure 4 1 below In addition they will need to have peripheral devices and software packages as indicated in the section Hardware Interfaces e Req The game shall be able to port to the monitor e Req The game shall be able
25. t during the game User save files will also be deleted upon death The priority for this feature is high 3 4 1 2 Stimulus Response Sequence Upon launching the game users will have the option of starting a new game or loading any existing save files from the main menu Users will be also be able to load their save file via the in game menu Users can create overwrite their save files via the in game menu 3 4 1 3 Functional Requirements e Req The game will feature a save system to store all user progression including level inventory and location e Req The save system will allow users to create their own saves at any point in the game e Req The save system will have an autosave feature which saves when entering a new level deck and when exiting the game e Req The game will feature Perma Death which will delete the user s save file upon death 3 5 Combat System Movement 3 5 1 Melee combat 3 5 1 1 Description Priority The melee combat system will consist of the typical rogue like combat system being adjacent to an enemy and pressing the appropriate direction toward them to initiate an attack This is of high priority as it is crucial to basic gameplay 3 5 1 2 Stimulus Response Sequences The melee combat will be instigated when an enemy is next to the player and either the player or the enemy initiates the button sequence to attack one another This will then upon a hit landing appropriately onto the recipient of the
26. to display a windowed display in the OS s native screen Figure 4 1 Main Menu 4 2 Hardware Interfaces character menu selector and in game menus The mouse selection will also be available as a default but opt out option to the player to navigate with more ease The mouse will be used to aim projectiles select inventory investigate tiles and other miscellaneous features in game Specific keys may be bound to abilities in game at the user s discretion The Esc key will produce a pause menu Errors will be printed to console output The user is required to use a keyboard and mouse to effectively use the software e Req The game shall take input from the keyboard e Req The game shall interpret input from the keyboard Software Reguirements Specification for Astro Page 19 4 3 Software Interfaces This product uses the Libtcod library It will save to a binary file Items and progress will be saved along with character progression The user must have an OS that supports the unzipping of files and the running of exe s to allow seamless download of files and playing The code for the game will be written in C e Req The game shall store its current state in a save file e Req The game shall load a save file to restore a previous state 4 4 Communications Interfaces This product once installed requires no active Internet connections or inter device communication Software Reguirements Specificatio
27. unctional Requirements e Req The game shall allow for a button to be pressed to allow for ranged attack Req The game shall support the ranged attack range to be displayed Req The game shall allow the player to select a tile to attack Req The game shall allow a vector to be drawn between points Req The game shall allow the player to deal damage and read statistics 3 5 3 Enemy Al 3 5 3 1 Description Priority The enemy Al will respond to the players movement and attempt to attack the player work with the player and barter with the player based on their disposition This is of high priority because it is necessary to play an entertaining game 3 5 3 2 Stimulus Response sequences During the game the player will move or commit some actions While committing this the game will decide where the Al controlled enemies should move or if they should perform any actions The game will take in many factors in this such as current position of player and Al enemy health statistics etc Upon correct implementation it will seem like a fluid system where the player is fighting against actual opponents 3 5 3 3 Functional Requirements e Req The game shall have actors with which to move e Req The game shall have an Al system to decide how to move the actors e Req The game shall have a way to move actors independent of the player e Req The game shall have a way to take in all data about the game state
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