Side scrolling game source code jobs

...Octal IT Solution LLP are seeking a talented and experienced Blockchain Developer (Web3) to join our team and take a leading role in initiating the development of our Game platform. As a Blockchain Developer, you will be responsible for designing, implementing, and maintaining the blockchain infrastructure and smart contracts that power our platform. You will work closely with our product and design teams to translate requirements into technical solutions and contribute to the overall architecture and development roadmap. Responsibilities: Design and develop the blockchain infrastructure and smart contracts for the Chess Game Platform. Collaborate with the product and design teams to understand requirements and translate them into technical specifications. Implement a...

I'm on the lookout for a skilled game developer to bring my concept for a PC adventure game into reality. The visuals should lean towards realism, so a keen eye for detail and an expertise in creating lifelike imagery is essential for this project. Requirements and skills needed: - Proficient in your choice of game development software: C & C++ - Experience in developing PC games, preferably in the adventure genre - Strong creative and problem-solving skills, handling from game mechanics to story design - Great communication for understanding my vision and providing project updates Interested? Let's build an epic adventure one code block at a time. Let your bids reflect your skill and the value you can add to this project.

...a new web hosting company called "Site Sonic" () We will provide professional, high quality, stable, and reliable web hosting services. I've played this game before. I know how contests work. I will NOT post a guaranteed project. When you do that, people post rubbish hoping for $. I want quality NOT rubbish. I'm in need of a logo that primarily serves as a strong representation of my brand's identity. Our brand is known for its professionalism and seriousness - a tone we'd like to communicate through the logo. Key points to be considered: - The design should be more on the professional and serious side, while being visually appealing and unique. - It's going to be primarily used online, so the logo must be versatile enough to loo...

...self-motivated and proactive in managing and growing our online presence. - Familiarity with TikTok, CapCut, Instagram, YouTube, Business Suite, and WhatsApp - Basic Excel and Google Sheets skills (don't worry, nothing too fancy!) - Bring your A-game with a friendly, organized, and positive attitude - Ready to soak up knowledge like a sponge and tackle any challenge with a smile Your role as our trusty assistant: - Work your magic by editing and posting videos across our social media platforms, following our director-approved marketing strategies - Get ahead of the game by scheduling weekly posts in advance - Keep us in the loop with daily task reports - Jump in and lend a hand with sales and marketing operations – we're a team! Excited to join this projec...

i have a php code from an application working on an external website, i want to inser it on a wordpress page

...skilled designer to Photoshop an asian family into a beautiful natural landscape setting (under a huge elm tree/ with the tree in the background). The goal is to create an engaging image that portrays us enjoying a serene sunset in a field. The image is to be used as a website background, so 16:9 image ratio, svg file format. The main elements (family and tree) should be on the left side of the image, and the right side should be relatively empty for my other website elements. Key Requirements: - Expertise in Photoshop: Ability to seamlessly blend the family photo with the new background while maintaining realistic proportions and lighting. - Understanding of Composition: A good eye for balance and framing to create a visually appealing scene. The final image should dep...

I'm seeking a skilled Photoshop or photo-morphing editor, specializing in creating realistic face morphs. Here's what I'm looking for: - Main Task: The essence of your job will be to morph faces with a high level of precision, paying attention to the smallest details. - Expected Result: The outcome should lean towards the realistic side rather than comedic or caricature-like effects. - Expertise Required: You should be adept in advanced blending techniques, including shading, texture, and other details that contribute to a lifelike end result. Your portfolio should demonstrate extensive experience and creativity in similar undertakings. A keen eye for detail and exceeding client expectations is critical for this project. Looking forward to your applications!

...medium-complexity gaming project, particularly focusing on in-game economies. Key Responsibilities: - Develop an ERC20 token: You will be responsible for creating a custom token that aligns with the requirements of the gaming project. - NFT Development: You should have a deep understanding of NFTs and be able to create unique, non-fungible assets for the game. Job Specifics: - Purpose: The main intention of these tokens is to be used within a medium-complexity game. - Industry Focus: The tokens are focused on the gaming industry, specifically for in-game economies. Ideal Candidate: - Proficient in ERC20 token development and NFT creation. - Prior experience working on medium-complexity gaming projects. - Deep understanding of in-game economies and t...

I'm in need of a modern logo that reflects my brand identity. My company, called 'The Concrete Code', needs a logo that captures its essence. Key Requirements: - The logo should incorporate shades of blue, grey, and black. - A modern design approach is preferred. - Emphasis on simplicity and clean lines. - please include trade tools etc “screed” - eye catching and easily identifiable as a concreting company Ideal Skills and Experience: - Proficiency in graphic design and logo creation. - Strong understanding of color theory. - Prior experience in creating modern, minimalist designs. - Familiarity with brand identity creation. Your design is crucial to my brand's success - I'm eager to see your creative ideas.

I'm seeking a talented developer to create a Windows-compatible game launcher that supports user registration. Key Features: - Game File Checking: a. The launcher should automatically checks the game file. It must read based on "updatelist" file that is located in the server. b. Application must be able to decrypt the "updatelist" file to perform file integrity check with the client local folder. c. Application must be able to provide error reporting log in case the list file between updatelist and local file is not in sync - User Registration: The platform should have a user registration system. - developer must have ability to provide restriction access whenever user clicking (game client executable program) th...

...user-friendly front end. - Implement a robust, secure, and efficient back end. - Integration of data storage solutions and ensuring high performance. Ideal freelancer's skills and expertise: - Extensive experience in full-stack development, including both front-end and back-end tech stacks. - Proficient understanding of web markup, including HTML5, CSS3, and JavaScript. - Strong knowledge of server-side MVC frameworks. - Experience in user authentication and authorization between multiple systems or servers. - Understanding of fundamental design principles behind a scalable and reusable application. -react the best its a team not just freelancer i share the design here

...particular areas: 1. Licensing and regulation 2. Player dispute resolution Your specific responsibilities will cover: • Guiding me through the licensing and regulation process of operating a gambling facility. Your insights on maintaining compliance with global and local regulations will be invaluable. • Assisting in resolving player disputes, with a specific focus on determining the legality of game rules. Ideal candidate would be someone with broad experience in gambling law, with a detailed understanding of its licensing and regulation aspect. An ability to handle player dispute resolution through legal advisory is imperative. This role demands critical decision-making skills, superb communication and extensive expertise on gambling legislation. Fluent Russian...

...animator highly skilled in 3D product visualization for an electronics product. The end product I'm aiming for is: 1) a professional, seamless, rotating view / animated of the product with special emphasis on specific features being animated. 2) another animation where products is turning, while moving across the screen, and bouncing off the top and bottom of the web page, at random angles, like a game of PONG. Use the word "pong" " as the first word of your reply so I know you have really read this. Your responsibilities will include: - Accurately translating the given product details into a 3D model, animated model. - Incorporating rotating views that emphasize distinct highlights of the electronic product The ideal candidate would have prior exp...

Hi I would like to create sound tracks for my video game like below : - --> level soundtrack (duration : 2m30 at least with automatic loop transition between the end and the beginning) - --> LevelOverview Map (duration : 2m30 at least with automatic loop transition between the end and the beginning) - --> Boss level soundtrack (duration : 2m30 at least with automatic loop transition between the end and the beginning) - --> Main screen soundtrack (duration : 2m30 at least with automatic loop transition between the end and the beginning) Regards

I'm looking for a talented video editor who can create a professional and polished video intro & outro for my brand. Company Name: The Craps Coach I'm in need of a talented video editor who can create a dynamic, modern intro and outro video to be used on my you tube channels videos. Video should be 3-6 seconds in length. The video is to use the company name an...Premier Pro and have the ability to edit the video title on the Intro only. Template also have the words subscribe and link to you tube channel. I would like the video to include sound effects, specifically SFX. Color scheme: same as on website. Website: Key Elements: - Style: Modern - Emotion: Excitement - Color Scheme: same as on website If you do not know what the game of craps is, please Google ...

I'm looking for an expert in image editing who can blend two different images together seamlessly. The final output should be a realistic, cohesive image that looks like it was originally captured that way. One photo has beautiful background and flowers on the left side, another photo I like myself. I want to put me with opened eyes to photo with closed eyes. Key requirements: - Expertise in image blending: The ideal candidate should be skilled at blending images together to create a single, realistic and seamless final product. - Attention to detail: This project requires a high level of attention to detail to achieve the desired outcome. The primary purpose of this project is personal use. The final image should be of high quality and suitable for framing or sharing with ...

...altering the position of the navigation bar. Here's what's needed: Color Changes: - Background color: Make a switch to a light color such as white or light gray, which delivers a clean and fresh look. - Button color: The color of all the buttons on the site should be in sync with a warm color palette. Particularly, purple is preferred. Navigation Bar Changes: - Shift the navigation bar to the left side of the website for a modern and user-friendly layout. - Give the navigation bar a new color that complements the other site colors. Ideal Skills: - Proven experience in website design - Proficiency in HTML/CSS, JavaScript - An excellent eye for color and design By incorporating these changes, my goal is to create a visually pleasing, user-centric platform. If you ha...

Please note you may be required to attend our office in Amritsar, located on Majitha Road, this could be once a month or every other month depending on nature of leads. Our lead gens come from various different professions from Doctors to Computer Programers and so on. The nature of this job is more like a side jobs there is no expectation on or side or demand for a certain amount of leads hence this job is commission only minimum being 50,000.00 rupees to max 2 lakh. Please have a read through the PDF and if interested do let me know.

I am in need of a proficient Python coder who can develop a robust object recognition system for me. The key tasks for this project are as follows: - Create a Python code able to recognize and detect people and vehicles. - The code not only needs to detect these objects but also provide specific information about them, including flagging any instances of jumping signals via license plate detection. - Additionally, it should be able to identify instances of multiple riders on two-wheelers, whether the riders are Indian or foreign, again using license plate detection. Algorithm 4 different Deep learning Algorithm and tell the best * Yolo * other than Yolo any 3 Deep learning network model The ideal freelancer for this project should demonstrate previous experien...

...rationale behind major decisions. 2. National Security Concerns (DO NOT DEFINE THE TERM OR PROVIDE BACKGROUND) - Terrorism: A look into how the surge fueled terrorism threats towards the U.S. - Stability: An assessment of how the surge affected U.S. goals for stability in the region. - Regional influence: Analyze the impact of the surge on the U.S.'s sway in the middle east. 3. Two-Level Game (DO NOT DEFINE THE TERM OR PROVIDE BACKGROUND) - Domestic politics: Examine how the surge impacted U.S. domestic politics. - International negotiations: Determine how the situation influenced U.S.'s negotiations internationally. - Public opinion: Assess how the public's perspective changed due to the surge. I am looking for a writer with an extensive under...

I need a skilled developer to modify a client-side executable file that connects to our gaming system. This file will allow users to interact with key features of our game. Key Requirements: - Modification of a client-side executable file through Configuration - Compatibility with Windows Operating System - Full reliance on stable internet connection Ideal Skills and Experience: - Proficiency in Windows application development - Prior experience with gaming systems - Understanding of client-side execution and network connectivity. Current Situation: Currently our client executable game file is connecting successfully to our server platform using "rugburn" method via DLL file that connected via soft-config rugburn file, which documentation can...

...rationale behind major decisions. 2. National Security Concerns (DO NOT DEFINE THE TERM OR PROVIDE BACKGROUND) - Terrorism: A look into how the surge fueled terrorism threats towards the U.S. - Stability: An assessment of how the surge affected U.S. goals for stability in the region. - Regional influence: Analyze the impact of the surge on the U.S.'s sway in the middle east. 3. Two-Level Game (DO NOT DEFINE THE TERM OR PROVIDE BACKGROUND) - Domestic politics: Examine how the surge impacted U.S. domestic politics. - International negotiations: Determine how the situation influenced U.S.'s negotiations internationally. - Public opinion: Assess how the public's perspective changed due to the surge. I am looking for a writer with an extensive under...

As a client, I'm seeking an experienced Node.js developer for full-time work. The primary tasks for the job will include: - Backend Development: You'll be responsible for building and maintaining the server-side of our application. - Frontend Development: You'll also need to work on the application's client-side. The ideal candidate should be proficient in working with: - Backend: - Frontend: React.js - Database: MySQL A solid understanding of these technologies is crucial. Experience in additional areas like API integration and database management will be a plus. Please bear in mind that this is a full-time position, so time dedication and commitment are paramount. Look forward to hearing from suitable candidates.

Hi there! Since I'm unclear about the specific tasks, projects, and platform needed, I'd appreciate a freelancer with a broad range of skills and experience in Unreal Engine. This includes game design, development, level design, 3D modeling, creating virtual reality experiences, and architectural visualizations. Optimally, the freelancer should have experience developing for multiple platforms such as PC, Console, and Mobile. A detailed discussion is expected post-application to narrow down the requirements.

I have a Wordpress website which I want to add a custom php multistep form to. The multistep form is supposed to get some of it's data from my backend database and also should save the data entered on the form to the database. Ps:- Serious bidders and bid with finality. No side bids on chat please.

I am looking for an experienced Prestashop developer to resolve an ongoing issue with my Prestashop 1.7 store. The primary issue is that my website Often spikes server CPU usage to 100%. Ideal Skillset: - Extensive experience with Prestashop 1.7 - Proficiency in diagnosing and resolving performance issues - Strong knowledge of server-side troubleshooting The freelancer should be adept at problem-solving and have a high level of attention to detail. The project involves: - Investigating and identifying the root cause of the issue - Implementing necessary changes to optimize performance - Providing recommendations to prevent similar issues in the future As I'm unsure of the specific changes that might have led to this situation, the successful candidate should have a proacti...

Looking for developers in C & C++ I'm on the lookout for a skilled game developer to bring my concept for a PC adventure game into reality. The visuals should lean towards realism, so a keen eye for detail and an expertise in creating lifelike imagery is essential for this project. Requirements and skills needed: - Proficient in your choice of game development software: C & C++ - Experience in developing PC games, preferably in the adventure genre - Strong creative and problem-solving skills, handling from game mechanics to story design - Great communication for understanding my vision and providing project updates Interested? Let's build an epic adventure one code block at a time. Let your bids reflect your skill and the value you c...

I am looking for a mobile game developer to create an engaging and thrilling action game with online multiplayer capabilities. Key Requirements: - Platform: The game should be tailored specifically for mobile devices. - Genre: The primary gameplay should revolve around action, offering intense, fast-paced gameplay for players. - Multiplayer: The game must include online multiplayer functionality, allowing users to connect and compete with each other in real-time. Ideal Skills and Experience: - Proficiency in mobile game development, with a rich portfolio of action genre games. - Strong background in online multiplayer game development. - Experience in creating engaging gameplay mechanics and balancing game elements. If you are a creative ...

...offer, based on available stock of the product. The system must "burn" the code once it is used. Key requirements: - Frontend: Clients will access the code redemption page through a url provided by us. - Backend: Random code generation: the system must be able to generate redemption codes randomly in URL format. - The Backend page must have 3 sections. Create Offer / New Orders / Reports - Code management: the site must burn the codes already used. - Easy to use: the system must be intuitive and easy to use Ideal skills and experience: - Web Development: Competent in web development - Code Generation: Experience in implementing random code generation. - Code Management: Previous experience in building redemption code ...

I am in need of a maxscript developer who can effectively modify my existing codes and fix syntax errors that have been popping up. Your role will include: - Thoroughly reviewing current maxscript codes - Identifying syntax errors - Making necessary modifications and adjustments to the code for error correction Ideal candidates should have proficient experience in debugging and editing maxscript codes, with a keen eye for riveting syntax errors. Consequent to your modifications, I expect to see a fully functional script free from syntax errors. Your highly analytical skills will be of the essence in this project.

I'm in need of a skilled 3D modeling professional. The project involves creating a 3D model of a product based on a specific design or reference image that will be provided. Key Deliverables: - Develop a detailed 3D model of the product - Ensure the model is accurately based on the provided design or reference image - Final deliverable should be in...reference image - Final deliverable should be in FBX format, Ideal Skills and Experience: - Proficiency in 3D modeling software and techniques - Experience in creating 3D models for product visualization - Strong understanding of design and attention to detail - Ability to work from a provided reference image to create an accurate model - Familiarity with creating models for use in animation and game development, with a focus on ...

I'm in need of a creative web designer to help me build the design for a shooter game. Your job will be to create a stunning visual template of how the website should look like and then i will have it programmed. Please share samples of your work so i can estimate the quality of what i can expect. Key Project Details: - The main goal of this website is to promote the game, so it should have an engaging and interactive design to draw in gamers. - The target audience for this website is primarily gamers, so the design should be tailored towards this audience. - there should be an interactive part where a background video is displayed and a specific area where the game trailer is displayed. - the "play now" button needs to be prominently placed. - you will...

I have a code scheme written in Python that I would like to be converted to Python. The goal of the code scheme is for data analysis. My ideal freelancer for this project would be someone who: - Has strong experience and understanding of Python - Has a background in data analysis - Is proficient in using NumPy or similar libraries - Can work independently and efficiently, with good communication skills If you are confident in your Python skills and experience in data analysis, please feel free to bid on this project. I'm looking forward to working with you.

ChatGPT is generating VBA to automate Excel data manipulation and other actions. As a VBA EXPERT, you will debug the code when it doesn’t do exactly what it was asked to. The project is being built module by module. There are about 6 modules.

I need a skilled developer who can transform my code to jQuery code. - Specific details on the functionality to be converted and the number of pages/components needing conversion have not been provided. - It is important that you have a strong understanding of both and jQuery, as well as the differences between the two frameworks. - You should also be able to ensure that the output jQuery code is optimized and efficient, with a clean and organized structure. Please note that compatibility with older browser versions is not a stated requirement, but any specific jQuery functionality or project requirement that you can fulfill will be appreciated. Kindly submit your bids with relevant experience and examples of similar projects, if applicable.

I'm in search of a Unity expert who can help me make significant adjustments to my Unity setup code. Your primary task will revolve around reshaping the game mechanics. Key Responsibilities: - Effectively modify the API used in the code. Unfortunately, I'm not able to divulge the exact API at this time but will provide details after the selection process. - Alterations needed mostly revolve around the game mechanics and player engagement. Essential Skills: - Prior experience with Unity and manipulating its code - Competency in altering APIs - Strong understanding of game mechanics We'll discuss further details when you've joined the project. I'm looking forward to seeing what magic you can bring to my game's functi...

The games will be table games for 4/6/8 players. All games will be played via touch screen. Calibration and screen use must be planned correctly All players will play on a single stage, simultaneously and sequentially. Score areas of the games will be recorded on Compact DB. There will be a timer in the games. For example, if the game lasts 20 minutes, it will give a warning to the end user at the 19th minute. Please insert a coin. we are ready for all game offers for these tables. -Text me for a detailed brief for games- All games must be prepared to run on GAMING TABLE. Device used: 43" Inch Touch Table(GAMING TABLE) 40 points PCAP touch CPU : Intel 5 6th Gen 6400T RAM:512GB screen : LG orignal A level screen panel Protect surface: 5mm tempered glass Resolution:38...

I'm seeking a savvy social media maven who can immediately drive higher Instagram and website sales for my online board games store. My main goal is to boost sales with key strategies including but not limited to promoting products, engaging the audience effectively, and developing successful campaigns. - Expertise Require...and developing successful campaigns. - Expertise Required: - Proficient in Instagram marketing and sales - Proven track record in boosting online sales - Exceptional in creating captivating content related to board games - Able to start immediately This is a fantastic opportunity for those who have a passion for board games and know how to sell them effectively. Let's play the game and win it together! Contact me for product photos ...

I'm in need of an experienced web designer who can bring my vision to life. Here's what I'm looking for: - An information-based single-page scrolling website. - The site is to include the following sections: 'About us', 'Services', 'Contact information', 'Testimonials', 'Upcoming Workshop', and 'Donate'. - I value usability and modern, attractive design. - Skills in Wordpress or any other modality that will help me to update information about upcoming workshop and events on my own - Edit about us page as business grows on my own Please place your bid with examples of prior work similar to this. I look forward to partnering with you on this project.

I want to convert an open source .exe software to APK for Android. The primary goal is to make a Morse code decoder that will effectively and accurately decode Morse code to text, and offer audio playback. Key features must include: 1. Morse Code to Text Translation: It should flawlessly translate Morse code into legible text. 2. Audio Playback: An integrated audio playback feature that allows users to listen to the decoded Morse code. 3. Replay Button: A Replay button for replaying the decoded Morse code audio. Ideal freelancers for this job should be skilled in .exe to APK conversions, Morse code decoding algorithms, and audio playback feature integration. Prior experience in developing Morse code-related apps will be a ...

I'm looking for a skilled web developer to create a gaming website that supports both single-player and multiplayer games. I aim to reach a broad audience, including desktop and mobile users, so the site must ...experience in creating platforms for both types of games. - Creative Design: While I don't have a specific design in mind, I am looking for a developer who can create an appealing and user-friendly layout for the website. Ideal skills and experience for this project include: - Proficiency in web development, particularly in creating gaming platforms. - Experience in both single and multiplayer game development. - Strong design capabilities to create an engaging user interface. Please include examples of your previous work and any relevant experience in ...

I'm looking for a skilled professional to help me build a screened-in room that overlooks the beautiful lake at our cottage. This project will also include an incorporated storage shed and possibly a BBQ area. The detached structure should be located on the right side of the existing cottage and can be connected to the existing deck by another deck or stone or paver walkways. Key Project Points: - Screened-In Porch: The porch should be around 225 sqft, constructed using pressure-treated wood decking for the flooring. - Storage Shed: The shed portion should be approximately 125 sqft, - The structure should have a black metal roof that matches the existing cottage. - If siding is involved, it should match the grey vinyl - The current cottage is only 26ft wide so the screen roo...

I am seeking an experienced Python coder to develop a Tic-Tac-Toe game for me. Here are the specifics: - Resolve a mini project scope - Implement the game in Python language Requirements - Expert in Python coding and scripting. Knowledge in Python libraries/packages is a plus. - Prior experience with game coding, particularly tic-tac-toe, is highly desirable. - Basic understanding of common game tactics and strategies. The final product should be a standalone Python script that can be executed easily. Please note, only the code is necessary, no specific platform application is needed. Your deliverable is expected to be clean, commented, and well-structured code. Please note your relevant Python and game development experience in your pr...

I am in need of a skilled and creative video game developer to help bring my vision to life. My project is an escape game which I envision in a compelling and immersive 3D style. We have already start it just has to be finished : To Do List : Finish the AI: make it patrol and chase us when we enter his field of hearing or vision Add sound: background music ( noise opening doors when picking up items) Add a game over or victory with the game credits ( like Louise ) Add keys to open doors add hospital beds with keys Replace the guard by the doctor to respect the story a minimum Add at the very beginning of the game a kind of loading screen to briefly tell the story the purpose of the game and how to get out ( tutorial how to move and pick up)...

...Engine animator to create highly detailed and realistic character animations. The primary use of these animations will be for video games, so an understanding of game development and how animations integrate with gameplay is key. Key Requirements: - Proficiency in Unreal Engine is a must. Previous experience with character animation for video games is highly preferred. - Ability to create top-tier, realistic character animations. We aim for a high level of detail in these models. - A good understanding of game development and how animations fit into the gaming experience. - Familiarity with creating animations that are optimized for in-game performance. If you have a strong portfolio and believe you can deliver high-quality, realistic character animations that ca...

We are looking to get a crypto casino game built, similar to Zkasino, Rollbit, Stake. If you are passionate about crypto, tech, and development, and want to build something that tens of thousands of people will use, then this opportunity is perfect for you! A fork of existing games is acceptable. The games will need to have a referral (affiliate) system in place for users to refer others and earn rewards from it. Games should accept funds from the top chains (ETH, BNB, BASE, MATIC, etc). Users will have their own wallet on the game which they will use the funds in to play the games. Scope will include frontend, backend and smart contracts required for a fully functioning game. Requirements: - Understanding of the crypto industry and how users operate. - Highly or...

I need to record a professional video about 30 seconds long Promote a game using Apple Vision Pro In it, there will be a person sitting on the sofa and surfing Twitter using Apple Vision Then a Pokemon ball appeared in her hand, and she threw it at the screen

I'm looking for an experienced game promoter who can help market my casual game with the main goal of increasing downloads. main responsibility: - Identify your target audience and develop your own marketing plan to increase game downloads - Create buzz through social media and other channels Desirable skills: - Mobile game enthusiasts with ready customer resources and channels - Community management experience - Mobile game promotion experience Please respond with your experience and how you plan to achieve your goal of increasing game downloads.

SUMMARY We need to build an online numeric bingo/Mexican lottery game just for fun not for money betting. The admin player will scan a QR code to select the layout and bingo type and will define general settings for game, the game dashboard and updates must be reflected in real time into a webpage with a QR code where the local or remote participants can scan it to join to the going game. The game must be able to be played on the browser of every mobile/tablet/pc devices. Please read attached document for complete requirements.