RELEASE: Major release versions

MINOR: New systems or modules

PATCH: Updates to existing systems or modules

0.1.0 :
- Added initial raycaster engine foundation

0.1.1 :
- Improved input system

0.1.2 :
- Added application framework features

0.2.0 :
- Added system info module

0.2.1 :
- Fixed compiler warnings

0.3.0 :
- Added texture system and ceiling rendering

0.3.1 :
- Refactored KoffeeKrew-Raycaster for better maintainability

0.3.2 :
- Refactored fragment shader for better maintainability

0.3.3 :
- Added per-tile floor customization

0.4.0 :
- Added editor application

0.4.1 :
- Refactored tilemap naming convention
- Added CC0 sprites/textures

0.4.2 :
- Fixed level loading

0.4.3 :
- Added layer selection interface for walls, ceilings, and floors

0.4.4 :
- Added right-click eraser functionality to editor

0.5.0 :
- Added animated door system and raycast-based interaction

0.5.1 :
- Refactored interaction system for modularity
- Fixed door closure edge case

0.5.2 :
- Added automatic asset copying to build directory
- Fixed VS debugging configuration

0.5.3 :
- Fixed framerate-dependent mouse sensitivity

0.5.4 :
- Refactored from stack-allocated arrays to heap-allocated textures

0.5.5 :
- Added copy/paste region functionality to editor

0.5.6 :
- Added undo/redo functionality to editor

0.5.7 :
- Improved tilemap grid to display texture images instead of solid colors

0.5.8 :
- Added cut region functionality
- Fixed undefined behavior in BMP loader

0.5.9 :
- Added select all functionality and batch undo/redo for paste operations

0.6.0 :
- Refactored application class into specialized subsystems

0.7.0 :
- Refactored texture system for user-defined loading
- Added shared library

0.7.1 :
- Added version output to console

0.7.2 :
- Added hotkey for saving levels

0.8.0 :
- Added entity system and sprite rendering

0.8.1 :
- Refactored KoffeeKrew-Editor for better code quality

0.8.2 :
- Added linux-debug and linux-release configurations

0.8.3 :
- Refactored KoffeeKrew-Raycaster for better code quality

0.8.4 :
- Added FPS limiting

0.8.5 :
- Fixed cross-platform FPS limiting accuracy

0.9.0 :
- Added cross-platform file dialog system for editor

0.9.1 :
- Added multi-file texture loading with native file dialog support

0.9.2 :
- Added grid zoom to editor

0.9.3 :
- Added portal entity type for level transitions

0.9.4 :
- Added decoration collision and door direction dropdowns to editor

0.9.5 :
- Fixed portal entity target level intialization and level transition bugs

0.9.6 :
- Added current level name to editor window title

0.10.0 :
- Added initial enemy AI system

0.11.0 :
- Added animation system with dedicated editor panel and context-aware hotkey handling

0.11.1 :
- Added docking and theme selector to editor

0.11.2 :
- Added theme persistence to editor
- Removed framerate-dependent animation logic

0.11.3 :
- Fixed iterator invalidation bug in animation panel

0.11.4 :
- Refactored include guards to #pragma once with file header comments
- Removed unneeded includes

0.11.5 :
- Fixed enemy AI oscillation using hysteresis for attack transitions
- Added arrow key controls

0.12.0 :
- Added KoffeeKrew-Raycaster and KoffeeKrew-Editor screenshots

0.12.1 :
- Improved README.md image usage
- Added CC0 Assets section

0.13.0 :
- Added initial weapon and combat system

0.13.1 :
- Fixed a logic error that was preventing certain entities placed after the player spawn from being initialized

0.13.2 :
- Added damage flash feedback when enemies are hit

0.13.3 :
- Added decoration and enemy scale to editor

0.13.4 - Added clipboard operations and undo/redo for entities in editor

0.13.5 :
- Added customizable fog gradient and void color to levels

0.13.6 :
- Improved raycast collision detection to account for door animation progress

0.13.7 :
- Fixed wall texture mirroring

0.14.0 :
- Added editor-configurable weapon loadouts for player spawns

0.15.0 :
- Added animation support for decorations

0.15.1 :
- Added DarkSpellwareResources to build asset copying

0.16.0 :
- Refactored texture system to use atlases
- Added atlas generator for efficient texture binding

0.16.1 :
- Fixed missing includes for Linux/GCC compilation

0.16.2 :
- Fixed Linux file dialog multi-select and filter pattern handling

0.16.3 :
- Refactored engine into a reusable static library target (KoffeeKrew-Raycaster-Engine)
- Fixed CMAKE_SOURCE_DIR usage for submodule compatibility

0.17.0 :
- Added EntityRegistry for unique entity ID assignment and lifetime tracking
- Added unique IDs to Entity with propagation to spawned runetime objects
- Refactored CombatResult to use entity IDs instead of raw pointers
- Improved EnemyManager, DecorationManager, and Tilemap to register entities with the registry

0.18.0 :
- Added RuntimeEntity base class for shared identity, position, and health interface

0.18.1 :
- Refactored Enemy and Decoration to inherit RuntimeEntity
- Added health/maxHealth and registry ID to Player
- Refactored EnemyManager and DecorationManager storage from stdvector to stdunordered_map for O(1) entity lookup
- Added EntityRegistryGetEntity and SetEntityPointer for cross-manager lookup
- Refactored EnemyAIUpdate to take target position instead of const Player reference
- Refactored Combat::Fire to take shooter position/direction instead of a const Camera reference

0.19.0 :
- Added EngineConfig struct for configurable engine initialization

0.20.0 :
- Added GameplayConfig singleton for runtime-configurable gameplay tuning values

0.20.1 :
- Refactored ApplicationInit() to accept EngineConfig and ApplicationLoadLevel() to be public for external level transitions
- Removed hardcoded gameplay constants and level paths from Constants.h
- Fixed player weapons not cleared on level transition

0.20.2 :
- Added virtual callback hooks to Application for subclass-driven event injection
- Added public const accessors on Application
- Refactored Application destructor to be virtual for subclassing support
- Refactored Interaction::Interact return type to be uint32_t to surface interacted entity IDs

0.20.3 :
- Fixed destroyed decorations blocking movement

0.20.4 :
- Refactored game loop to use a fixed simulation tick rate (60 Hz) decoupled from render frame rate

0.21.0 :
- Added BMFont bitmap font rendering system with screen-space orthographic text pass
- Added TextRenderer class supporting position, scale, RGBA color, left/center/right alignment, and word-wrap
- Added text.vert and text.frag shaders for pixel-coordinate glyph rendering
- Added fontPath field to EngineConfig for font loading at init
- Added RenderText, LoadFont, and IsFontLoaded to Application protected interface

0.22.0 :
- Added OverlayRenderer for batched 2D colored rectangle and fill bar rendering with three-layer draw order (Background, Content, Tooltip)
- Added overlay.vert and overlay.frag shaders for per-vertex-color screen-space quad rendering
- Added DrawRect and DrawBar to Application protected interface
- Added CursorMode enum and SetCursorMode to Application; mouse look is gated on Captured mode
- Added ImGui integration to engine; OnImGui() virtual callback for subclass debug windows
- Added GetFramebufferSize public accessor on Application

0.23.0 :
- Added InputManager class with action-mapping, per-action held/pressed-latch state, mouse button binding, and movement axis helpers
- Added InputAction enum for named engine and subclass actions (MoveForward, Fire, Interact, Quit, ToggleUI, OpenChat, etc.)
- Added InputMode enum (Gameplay, UI, Chat) with SetInputMode/GetInputMode on Application gating movement and combat by mode
- Added GetInputManager protected accessor on Application for subclass binding and queries
- Refactored Application to own an InputManager; all input sampling and latch management moved out of Application into InputManager
- Removed individual latch fields (spacebarLatch_, leftMouseButtonLatch_, rKeyLatch_, key1-3Latch_) and inline input axis fields from Application

0.24.0 :
- Added StatBlock to KoffeeKrew-Shared: generic named-float stat container with base values, flat additive modifiers, and percent multiplicative modifiers
- Added StatBlock member to Player with GetStats() / GetStats() const accessors
- Added GetMutablePlayer() protected accessor on Application for subclass attribute initialization
- Added OnPlayerDied() virtual callback to Application, fired once when player health reaches zero
- Added full-screen player damage flash overlay (red vignette, fades over configurable duration) drawn via OverlayLayer::ToolTip on each hit
- Added enemy melee attack system: enemies in ATTACK state deal configurable damage per second (enemyAttackDamage, enemyAttackRate) via AccumulateAttackDamage/ConsumedPendingDamage on Enemy
- Added enemy-to-player damage processing in SimulationTick with per-enemy OnEntityDamaged events and playerDeathFired_ guard
- Added playerDamageFlashDuration, playerDamageFlashMaxAlpha, and playerDamageFlashColor* fields to GameplayConfig
- Added enemyAttackDamage and enemyAttackRate fields to GameplayConfig

0.25.0 :
- Added Item and ItemType to KoffeeKrew-Shared: generic item data structure with ID, name, description, type enum, key-value property map, icon texture ID, and stack count
- Added binary serialization to Item (SaveToStream / LoadFromStream) with length-prefixed strings and property count guards
- Added ITEM_DROP entity type (id 31) to EntityTypes.h
- Added ItemDrop RuntimeEntity subclass: holds a generic Item, billboard texture ID, and scale; IsAlive() always returns true (removed explicitly by manager)
- Added ItemDropManager: manages active ground drops by registry ID with O(1) lookup; SpawnDrop, RemoveDrop, GetDropsInRange, GetDropCount, Clear
- Added itemPickupRadius field to GameplayConfig and MAX_ITEM_DROP_COUNT to Constants
- Added proximity pickup loop to ApplicationSimulationTick: collects drops within itemPickupRadius, removes them, and fires OnItemPickedUp per drop
- Added OnItemPickedUp virtual callback, SpawnItemDrop helper, and GetItemDropManager const accessor to Application
- Improved RendererRender signature to accept ItemDropManager; item drops are billboarded with entity type byte 2 and no flash

0.25.1 :
- Fixed enemy death animations never rendering
- Added AnimationControllerIsFinished() to detect when a non-looping animation has played through its last frame
- Added EnemyIsDeathAnimationFinished() to expose animation completion for removal gating
- Improved EnemyManager::RemoveDeadEnemies to wait until the death animation finishes before removing an enemy

RELEASE: Major release versions

MINOR: New systems or modules

PATCH: Updates to existing systems or modules

0.1.0 :
- Added project foundation with KoffeeKrew-Raycaster as a git submodule and CMake build integration

0.2.0 :
- Added MUDApplication class
- Updated KoffeeKrew-Raycaster submodule to 0.20.2

0.2.1 :
- Updated KoffeeKrew-Raycaster submodule to 0.22.0

0.3.0 :
- Added HUD class with health bar, mana bar, XP bar, action bar slots, minimap placeholder, and chat window placeholder
- Added ImGui debug window showing version, entity count, and enemy count

0.3.1 :
- Added MUDApplication constructor registering ToggleUI (Tab) and OpenChat (Enter) bindings via engine InputManager
- Added input mode switching logic in OnUpdate: Tab enters UI mode, Enter enters Chat mode, Escape returns to Gameplay from UI or Chat
- Updated KoffeeKrew-Raycaster submodule to 0.23.0

0.4.0 :
- Added CharacterStats class defining MUD attribute names (Strength, Dexterity, Vitality, Energy), resistances (Fire, Cold, Lightning, Poison), derived from stat formulas (damage multiplier, defense, attack rating), and max HP/mana from computation Vitality/Energy
- Added Leveling system class with exponential XP curve (200 * level^1.6), level cap of 99, 5 attribute points and 1 skill point per level-up, and XP reward scaling by player/enemy level
- Added CharacterStats and LevelingSystem members to MUDApplication; stats initialized once on first level load via statsInitialized_ guard
- Added OnPlayerDied override: respawns player at full health and mana in place
- Improved HUD to display real health, mana, and XP fill fractions from CharacterStats and LevelingSystem instead of placeholder constants
- Improved OnEntityKilled to grant XP on enemy kills, trigger level-up with full HP/mana refill, and log level and attribute point totals
- Improved ImGui debug window with full character sheet: HP/mana, level/XP progress bar, attributes, derived stats, and resistances
- Updated KoffeeKrew-Raycaster submodule to 0.24.0

RELEASE: Major release versions

MINOR: New systems or modules

PATCH: Updates to existing systems or modules

0.1.0 :
- Added kk_dev_01.map

0.1.1 :
- Added navmesh to kk_dev_01.map

0.2.0 :
- Added CountdownTimer component
- Added Toggle method to ChangeVisibility component

0.2.1 :
- Improved bullet system performance with lazy decal initialization, static material caching, and terrain decal optimization
- Improved projectile collision filtering to exclude player camera and child entities
- Improved crouch control mapping

0.3.0 :
- Added EnemySpawner component with wave-based spawning system and template-based enemy cloning

0.4.0 :
- Added IntermissionManager component

0.5.0 :
- Added Barricade component with health and repair system, Added GameUI component for barricade health and wave display

0.6.0 :
- Added kk_dev_02.map

0.7.0 :
- Added boundary wall to kk_dev_02.map

0.8.0 :
- Added Retro shader

0.8.1 :
- Added flash and pulsing scale damage feedback

0.8.2 :
- Added infinite ammo, player reset, and corpse cleanup on wave start

0.8.3 :
- Added health, sprint, jump, and flashlight entity definitions to FPSPlayer

0.9.0 :
- Added ARs and Handguns from Ultimate Low Poly Guns by Pichuliru
- Added crosshair
- Improved shooting

0.10.0 :
- Added LMGs and Rifles from Ultimate Low Poly Guns by Pichuliru

0.11.0 :
- Added Shotguns from Ultimate Low Poly Guns by Pichuliru

0.12.0 :
- Added SMGs from Ultimate Low Poly Guns by Pichuliru

0.12.1 :
- Added Search for Weapons functionality to IntermissionManager

0.13.0 :
- Added Survivor component

0.13.1 :
- Added Search for Survivors functionality to IntermissionManager

0.13.2 :
- Improved survivor and enemy spawns
- Added barrels to barricade

0.13.3 :
- Added Restart Game functionality
- Added sensitivity slider
- Fixed crosshair alignment when changing resolutions

0.13.4 :
- Added game name

0.13.5 :
- Improved weapon balancing

0.13.6 :
- Improved barricade to be invisible and non-shootable

0.13.7 :
- Added idle bob to weapons

0.13.8 :
- Fixed pause menu behavior during intermission screens

0.13.9 :
- Added player movement toggle option
- Fixed pause menu not overriding selected intermission menus
- Fixed crosshair drawing over quit dialog

0.13.10 :
- Added FOV slider to options menu
- Improved enemy spacing near barricade

0.13.11 :
- Fixed crosshair remaining visible after player death
- Improved monster attack range

0.13.12 :
- Added game mode selection to main menu

0.14.0 :
- Added screenshots

0.14.1 :
- Refactored game mode selection to map selection

0.15.0 :
- Updated to Leadwerks 5.0.2
- Fixed build compatibility with MSVC v145 toolset and GameInput API
- Fixed stack overflow crash when loading maps
- Fixed undefined behavior in Enemy::GetEntityPlayer missing return

0.15.1 :
- Added volume slider to options menu

0.16.0 :
- Removed unused First-Person Shooter template assets
- Added Wits End (Winter) and Wits End (Summer) map names

0.16.1 :
- Fixed volume resetting on map load

0.16.2 :
- Added enemy health increases by 100 every 5th wave