**Developing Raycasting Shooter**

I'm currently focusing on the core raycasting engine, aiming for a fully self-contained, polished HTML5 Canvas implementation in the Wolfenstein 3D style. My immediate next step is to meticulously review the project requirements and identify the critical components needed to bring this vision to fruition.

**Refining Raycasting Engine**

I'm prioritizing a pure, self-contained HTML5 Canvas raycasting engine. My current focus is on implementing WASD movement with optional mouse turning and robust wall texturing, including procedural generation and shading for a distinct Wolfenstein 3D aesthetic. I am also exploring dynamic floor and ceiling casting techniques.

**Implementing Enemies and Weapons**

My current efforts are directed towards integrating enemy mechanics, focusing on diverse enemy types with procedural sprite animations and robust AI for patrolling, attacking, and reacting to damage. Simultaneously, I'm developing a weapon arsenal, starting with a knife and moving towards projectile-based weaponry with associated visual and audio feedback.

**Adding Weapons and Pickups**

I'm now concentrating on implementing a diverse weapon system, from pistols to rocket launchers, complete with ammo management and visual feedback like muzzle flashes. Concurrently, I'm integrating various pickups, including health, ammo, keys, and score items, to enrich the gameplay experience and progression through levels.

**Designing Levels and HUD**

I'm now focused on level design, creating distinct maps with secrets and treasures, alongside implementing a classic Wolf3D-style HUD for status updates and a toggleable minimap. Procedural audio for weapons and enemy reactions is also a current area of development.

**Designing Classic Raycasting**

I'm currently focusing on the foundational raycaster engine, specifically implementing the DDA algorithm. My work involves defining player position `(px, py)` and the direction vector `(dirX, dirY)` to accurately cast rays through the game world.

**Refining Raycaster Details**

I'm now refining the raycaster's details. This involves precise texture mapping, calculating wall distance to prevent distortion, and implementing advanced shading techniques like darker sides for depth. I'm also working on procedural ceiling and floor rendering, and have begun developing the logic for dynamic door states and ray intersection within them.

**Implementing Sprite Interactions**

My focus has shifted to sprite casting. I'm meticulously calculating distances, sorting sprites by depth, and transforming them into camera space. The next step involves drawing vertical stripes for each sprite, ensuring accurate Z-buffering and conditional pixel rendering, alongside exploring dynamic tinting and pushwall mechanics.

**Populating Texture Library**

I'm now populating the texture library, meticulously defining 64x64 pixel art for essential game assets. This includes various stone and brick walls, wood paneling, metal textures, and distinct door types. Floor and ceiling tiles are also being added, alongside conceptualizing sprite textures.

**Adding Animated Entities**

I am now creating detailed 64x64 pixel art for several enemy types, including walk, shoot, pain, and death animations. Decorative elements like animated torches and explosive barrels are also being developed, along with unique boss character sprites.

**Designing Interactive Pickups**

I am now detailing interactive pickups and their visual representations. This involves designing chained wall/floor elements, bone piles, and distinct enemy visual cues like green pillars and golden armor. I'm also creating specific assets for health, ammo, weapon, key, and armor pickups, along with treasure items and their point values.

**Animating Weapon Recoil**

I am now implementing weapon bobbing and sway to simulate movement. I'm also working on dynamic muzzle flash lighting to illuminate the environment when firing.

**Generating Soundscapes**

I am now focusing on building a procedural audio engine using the Web Audio API. My current work involves crafting high-quality sound effects from scratch, including distinct weapon noises, enemy vocalizations, and environmental interactions, alongside developing a chiptune BGM generator.

**Synthesizing Audio Rhythms**

I'm currently generating a driving, suspenseful action beat using AudioContext nodes, alongside an intense, fast-tempo boss theme. I'm also implementing volume control and a mute toggle for the audio.

**Crafting Campaign Levels**

I'm designing four distinct levels, each with unique mechanics like pushwalls and key gates. I'm also conceptualizing an intermission screen to display player statistics between levels.

**Implementing Pointer Lock**

I'm working on implementing pointer lock for the canvas to improve player control and immersion.

**Designing Modular Code**

I'm currently focusing on architecting a high-performance, rich JavaScript codebase within a single HTML file. The initial plan involves a procedural texture generator, starting with defining basic textures like "Empty" and "Grey Stone."

**Generating Texture Assets**

My focus has shifted to detailing specific texture types. I'm currently exploring variations for stone bricks, including classic, dungeon-themed, and moss-covered options. Additionally, I'm conceptualizing decorative elements like wood panelling and specialized wall features.

**Animating Enemy Characters**

I'm now detailing the animation sequences for various enemy types. This includes defining frame counts for movement, actions, and death states for soldiers, mutants, and a unique boss character. I'm also listing essential item and pickup sprites.

**Detailing Item Sprites**

I'm now enumerating specific in-game items and pickups. This includes various treasures, keys, weapon enhancements like armor, and interactive environmental objects such as lamps and exploding barrels. I'm also defining visual effects like sparks and splats.

**Implementing Player Dynamics**

I'm now focusing on player movement feedback and visual enhancements. This includes implementing a subtle bobbing motion during locomotion, dynamic muzzle flash lighting that affects the environment, and noticeable screen recoil with crosshair feedback.

**Refining Raycasting Engine**

My current efforts involve finalizing the Wolf3D-style raycasting engine, specifically the Digital Differential Analysis (DDA) algorithm. I'm detailing player position, direction, and camera plane calculations for a 66° FOV, and refining wall casting logic with step and side calculations. I am also optimizing wall hit detection and texture mapping, alongside implementing depth-based fog attenuation and distinct shading for horizontal walls.

**Managing Dynamic Doors**

I'm now focusing on the intricate mechanics of various door types, including normal, gold locked, silver locked, and elevator doors. My work includes defining and managing their states – closed, opening, open, and closing – and precisely calculating how rays interact with them, especially when doors are in motion and a ray hits their center. The implementation also accounts for the visual detail of recessed door frames.

**Integrating Secret Walls**

My latest focus is on the mechanism for secret push-walls. I am detailing the logic for their activation and how they should behave when pushed, specifically implementing their backward movement.

**Implementing Secret Walls**

My focus is now on the mechanics of secret push-walls. I'm detailing their activation logic, backward movement, and how the raycaster will interact with them as they slide into secret passages with accompanying sounds. I'm also considering optimizations for floor and ceiling rendering and sprite management using a z-buffer.

**Developing AI & Audio**

I'm now detailing enemy AI, focusing on grid-based navigation, line of sight, and various combat states including alert and chase. I'm also designing procedural sound effects for weapons and explosions using the Web Audio API.

**Composing Audio Assets**

I'm now detailing procedural sound effects and background music. This includes enemy barks, player pain sounds, door mechanisms, item chimes, and secret discovery fanfares. Additionally, I'm designing multi-channel chiptune synth for dark, adrenaline-pumping retro dungeon music with adjustable volume.

**Designing HUD Elements**

I am currently detailing the classic Wolf3D-style Heads-Up Display. This includes the retro bottom panel with vital statistics like floor, score, lives, health, ammo, and keys. I'm also planning game overlays for menus, level completion, and game over screens, alongside input controls.

**Generating Procedural Textures**

I'm now focused on the intricate details of procedural texture generation, aiming for authentic retro pixel art. My current efforts involve defining the algorithms for stone bricks, including subtle noise and edge lighting, and I'm beginning to conceptualize variations like blue dungeon stone with torch holders and various wood textures.

**Designing the SPA Structure**

I'm currently focusing on the `index.html` structure for our single-page application. My immediate task involves architecting the core components, starting with the canvas rendering engine and its internal resolution settings.

**Refining the Raycaster**

I'm refining the raycasting algorithm, specifically focusing on its distance calculations and texture mapping to ensure crisp, auto-scaled rendering. My current work involves integrating features for sliding doors and secret push-walls, including their respective intersection logic and offset handling.

**Implementing Wall Textures**

I'm now implementing wall textures, cataloging various options like stone bricks, wood, and prison bars, while also defining specific interactive elements such as exit walls and doors.

**Developing the Rendering Engine**

I'm developing the rendering engine, focusing on efficient floor and ceiling casting with dynamic shading and procedural patterns, alongside a sprite system using a 1D depth buffer for depth-based rendering and transparency.

**Generating Textures and Sprites**

I'm now focused on the procedural generation of all textures into memory buffers. This includes detailed stone bricks, an imperial eagle motif, blue cobblestone, wood, mossy stone, steel grates, and elevator panels. I'm also implementing animated sprite support and a 2.5D weapon viewmodel with recoil.

**Defining Textures and Sprites**

I'm continuing to detail the texture library, now specifying variations like red brick with conduits, vault plating, and various door types. I'm also cataloging floor and ceiling flat textures, alongside a range of interactive scenery sprites including animated torches, barrels, and skeletal remains.

**Cataloging Pickups and Enemies**

I'm now detailing the sprites for interactive pickups, including various health, ammo, weapon, treasure, and key items, each with specific visual identifiers and functional roles. Concurrently, I'm defining the animation frames for enemy entities, starting with a guard character exhibiting distinct walk, attack, hit, and death states.

**Defining Enemy and Weapon Art**

I'm now detailing enemy sprites, including a SS officer with dual SMGs, a mutant with claws, and a boss with chainguns, each with specific walk, attack, pain, and death animations. I'm also developing detailed pixel art for weapon viewmodels like a knife, pistol, machinegun, chaingun, and shotgun/rocket, along with HUD elements.

**Synthesizing Game Sounds**

I'm now procedurally synthesizing all in-game audio, crafting distinct sound effects for weapon fire, enemy interactions, and pickups using the Web Audio API, aiming for an authentic retro feel without external assets.

**Generating Sound Effects**

I am procedurally synthesizing all in-game audio. This includes distinct sounds for door operations, finding secrets, player damage, level completion, and explosions, all crafted using the Web Audio API for that authentic retro feel.

**Implementing Interactive Elements**

I'm now integrating interactive elements such as push walls with unique sounds, explosive barrels that damage surrounding entities, and refining the control scheme to include movement, weapon selection, and specific action keys for enhanced player engagement.

**Testing Performance and Structuring**

I'm now testing procedural texture and sprite rendering for optimal 60 FPS performance. I'm also finalizing the complete, bug-free `index.html` structure, ensuring it's clean and elegant.

**Designing Game Architecture**

I'm focusing on the core engine structure for our single-page game. The primary goal is to define robust state management for screens like Menu, Playing, and Game Over, alongside a performant Raycaster utilizing DDA.

**Implementing Raycasting Features**

I'm currently refining the raycasting engine. My focus has shifted to integrating advanced features like sub-pixel precision, procedural wall texturing with side-specific shading, and dynamic fog effects. I'm also working on implementing a smooth, performant floor and ceiling rendering mode.

**Developing Sprite Rendering**

I'm diving into sprite implementation, aiming for accurate Wolfenstein 3D-style FOV projection, depth-based sorting, and dynamic lighting. I'm also generating all textures and 3D particles procedurally at startup for a seamless experience.

**Defining Visual Elements**

I'm detailing the specific wall types, floor, ceiling, and sprite textures required. This includes various door styles, atmospheric walls like blood-stained or torch-lit ones, and detailed enemy sprite animations for guards and officers, including their attack and death sequences.

**Refining Enemy Designs**

I'm detailing the animation frames and attack styles for several distinct enemy types, from a trench-coated soldier to a mutant knight and a powerful boss. I'm also outlining the visual representation and effects for various in-game items and pickups, including health packs and ammunition.

**Detailing Game Assets**

I'm now meticulously cataloging all necessary in-game items, from interactive keys and crucial weapon pickups to a variety of environmental decorations. I'm also outlining the distinct visual states and animations for each weapon and player HUD portrait, ensuring a rich visual experience.

**Implementing Sound Effects**

I'm now focusing on the audio side, specifically crafting the procedural sound effects using the Web Audio API. My current work involves defining distinct sonic signatures for weapon fire, impacts, enemy vocalizations, player feedback, and environmental interactions.

**Composing Game Soundtrack**

I'm now focusing on the background music, designing a chiptune synthesizer to create driving basslines and melodic leads fitting for castle infiltration. I'm also planning specific tracks for levels, boss fights, victory, and game over, alongside implementing volume controls and a mute toggle.

**Implementing Interactive Elements**

I'm now integrating interactive objects into the environment, specifically focusing on pushable secret walls that reveal hidden areas and breakable props like barrels that drop loot. I'm also implementing the level exit mechanism.

**Adding Mobile Controls**

I'm now integrating mobile-friendly controls, specifically a virtual joystick and action buttons for touch devices. Concurrently, I'm refining the rendering engine's technical aspects, optimizing for speed with direct pixel manipulation, variable resolutions with clean scaling, and a smooth 60+ FPS loop. My focus is also on the DDA Raycaster, detailing precise wall coordinates, Y-shading, distance fog, and the interactive states for doors and push-walls. I'm also implementing fast scanline rendering for floors and ceilings.

**Finalizing Rendering Logic**

I'm now focusing on the last rendering details. This involves finalizing floor/ceiling techniques, implementing billboard sprites with depth sorting and shading, and adding dynamic weapon overlays with muzzle flashes. I'm also coding the minimap with fog-of-war and color-coded icons, before integrating everything into the main HTML.