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Phoenix Engine
Phoenix Engine is a personal C++ based game development engine.
It features: -
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Network System
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2D and 3D Rendering via DirectX 11 API
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2D and 3D Particle System
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Multithreaded Job System
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2D Physics Engine
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Event System
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Dev Console
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Monospaced Font Engine
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Debugging Visualization System
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Thread Safe Data Structures
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Clocks and Timers
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XML Data Parsing
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​Audio Engine via FMOD API
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Math Libraries
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Primitives
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Input System with Xbox Control support
Games Developed Using Phoenix Engine Sizzle Reel
Performance Analysis of Multithreaded Rendering
(Work In Progress)
The renderer of a game engine is often a performance bottleneck from the CPU side. Adding multithreading to the rendering step is an effective means to address the performance issue without losing content details. The primary factors affecting multi-threaded rendering performance are analyzed, and the relevant optimization methods are explored as well.
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Multi-Threaded Rendering - Shadow Maps
Multi-Threaded Rendering - Demonstration
Fantasy Ball is a breakout clone with a Forest-Fantasy theme to it.
The goal with developing this game was to build a modular game that can be easily modified by the level designers.
It features: -
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2D Particle System
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Per pixel Color Key Image based data driven map generation
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XML based data driven gameplay
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XML based Data Driven Power-Ups support
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Randomized Background Music and Level Background Images
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Fantasy Ball - Power Up
Fantasy Ball - Debug Visualization
Battle City
Battle City is a game developed using the Incursion Project.
The goal with developing this game was to understand the complexities of developing online networked multiplayer games.
It features: -
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2-Player Online Multiplayer game
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TCP based server connection
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Reliable UDP Messaging
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Entity Replication
Battle City - Entity Replication
Battle City - Movement Replication
Vampstein
Vampstein is a doomenstein clone.
The goal with developing this game was to develop a 2.5D game/tech demo.
It features: -
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A 3D world built using AABBs and XML parsed data
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4 different types of billboards
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2.5D Raycasts - 2D horizontal and vertical raycasts to mimic a 3D raycast
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Multiple types of AI
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Billboarded Sprite based Animation
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Validated XML based Data Driven Gameplay and Entity factory
Vampstein - XML Map Switching via Dev Console
Vampstein - XML Map Raycasting and Debug Visualization
2D Physics Sandbox
2D Physics sandbox is a playground for testing the 2D physics system.
The goal of developing this was to engineer a 2D Physics Engine similar to Unity Engine.
It features: -
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Disc and Convex Polygon Colliders and Rigid bodies
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Bounciness, Friction, Angular and linear Drag
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Collision Detection and Angular Impulse resolution
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Collision Layers
2D Physics Sandbox - Collision Detection, Collision and Impulse Resolution
2D Physics Sandbox - Polygon creation from Point Cloud
Adventure
Adventure is a Rougelike game/tech demo.
The goal with developing this game was to understand some map generation technique and driving engine development.
It features: -
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Parsing XML files using TinyXML2
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Data-Driven (XML based) gameplay
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Data-Driven Sprite based Animation Engine Side System
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Multiple Map generation techniques like per pixel color key image based, cellular automata, ranged drunken wander
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It support only Xbox controller Input
Adventure - Movement
Adventure - Map Generation
Incursion
Incursion is a top down shooter game. Also used for Battle City Project.
The goal with developing this game was to understand how game engines development progresses with textures and audio.
It features: -
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Add a basic audio system using FMOD
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Upgraded rendering system to process textures and sprite sheets
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Sprite sheet based levels
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Simple Monospaced Font Engine
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Multiple Levels with 4-way and 8-way flood fill validation
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Simple level generation techniques like random in fixed range drunken wander
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Multiple types of AI
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Physics and debug visualization tools
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Keyboard and Xbox controller support
Incursion - Gameplay
Incursion - Debug Visualization
Starship
Starship is a clone of the classic arcade game asteroids.
The goal with developing this game was to understand how game engines development starts.
It features: -
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Flat shaded textures
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AI - Constant Velocity and Constant Acceleration based
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Keyboard and Xbox controller support
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Debug Visualizations along with other basic debugging tools
Starship - Gameplay
Starship - Debug Visualization
Math Testing & Visualization
The Math utilities are tested on a custom test framework in a console app.
The Math is also visually tested in a separate app for debug visualization. The following visualizations can be observed in the app: -
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Nearest point on a capsule, OOBB 2D, AABB 2D, Line Segment, Disc relative to the current mouse position.
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If the Mouse is inside the OOBB 2D, AABB 2D, Line Segment or Disc you can see those objects highlighted with increased opacity.
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A pentagon has been render at the bottom left corner for testing the rendering of polygons.
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Math - Debug Visualization
Math - Unit Tests
Post Mortem
What Went Well ?
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Developed a personal game engine from scratch.
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Understood and developed various major subsystems, their intricacies and the scale of complexity of commercial and proprietary game engines.
What Went Wrong ?
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Game code and engine code got mixed at times.
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As the engine got bigger I forgot about certain utilities and ended up re-inventing the wheel on the game side.
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Overly complex engine systems sometimes defeat their own purpose when used in game code.
What We Learned ?
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Learned the importance of nuances that come when developing Engine code versus developing game.
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How good engine systems save time when developing a game.
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When it's best to develop game code and then port the game code to engine code depending on it's utility and robustness.
