KISS ASCII Renderer - Development Progress

Completed Features ✅

1. Core Types and Interfaces

• ✅ Cell, Color, RenderTarget interface
• ✅ Box and text option types
• ✅ Full TypeScript strict mode support
• ✅ Comprehensive type definitions
• Tests: 6 passing | Docs: core-types.md

2. Color Utilities

• ✅ parseColor() - Parse any color format to RGB
• ✅ rgbToHex() - Convert RGB to hex
• ✅ toCSSColor() - Convert to CSS strings
• ✅ lerp() - Color interpolation
• ✅ brighten() - Brighten colors
• ✅ darken() - Darken colors
• Tests: 22 passing | Docs: color-utilities.md

3. CanvasTarget

• ✅ Browser canvas rendering
• ✅ Custom character/font dimensions
• ✅ Full color support
• ✅ Immediate rendering mode
• Tests: 12 passing | Docs: canvas-target.md

4. Core Renderer

• ✅ setChar() - Set single characters
• ✅ drawText() - Draw text strings
• ✅ fill() - Fill rectangles
• ✅ clear() - Clear buffer
• ✅ render() - Flush to target
• ✅ Safe mode and clip mode
• ✅ Double-buffering
• ✅ Method chaining
• Tests: 26 passing | Docs: renderer-api.md

5. Box Drawing

• ✅ box() - Draw boxes with borders
• ✅ border() - Border-only boxes
• ✅ rect() - Filled rectangles
• ✅ Multiple border styles (single, double, rounded, heavy, ASCII)
• ✅ Custom border characters
• ✅ Interior fill support
• Tests: 21 passing | Docs: box-drawing.md

6. Text Alignment

• ✅ centerText() - Horizontal centering
• ✅ rightAlign() - Right-aligned text
• ✅ leftAlign() - Left-aligned text
• ✅ alignText() - Dynamic alignment
• ✅ Custom width/offset support
• Tests: 20 passing | Docs: alignment.md

7. Layer System

• ✅ layer() - Select/create layers
• ✅ layerOrder() - Set z-index
• ✅ hideLayer() / showLayer()
• ✅ clearLayer() - Clear specific layers
• ✅ Per-layer rendering with compositing
• Tests: 17 passing | Docs: layer-system.md

8. Menu Helper

• ✅ menu() - Render interactive menus
• ✅ Selection indicators
• ✅ Custom colors for selected items
• ✅ Optional borders and titles
• ✅ Auto-sizing and padding
• Tests: 13 passing | Docs: menu-helper.md

9. Progress Bar Helper

• ✅ progressBar() - Draw progress indicators
• ✅ Horizontal and vertical orientations
• ✅ Multiple style presets (blocks, dots, arrows)
• ✅ Custom fill/empty characters
• ✅ Border and label support
• ✅ Percentage display
• Tests: 14 passing | Docs: progress-bar.md

10. Panel Helper

• ✅ panel() - Bordered containers with content areas
• ✅ Titles and footers in borders
• ✅ Scrollable content with offset control
• ✅ Text alignment for titles and content
• ✅ Inner padding support
• ✅ Multiple border styles
• Tests: 13 passing | Docs: panel-helper.md

11. Camera/Viewport System

• ✅ setCamera() / resetCamera() - Control viewport position
• ✅ follow() - Center camera on target (e.g., player)
• ✅ moveCamera() - Relative camera movement
• ✅ worldToScreen() / screenToWorld() - Coordinate conversion
• ✅ Automatic world-to-screen transformation
• ✅ Works seamlessly with all drawing methods
• Tests: 22 passing | Docs: camera-system.md

12. Keyboard Input System

• ✅ KeyboardManager class for game input
• ✅ isPressed() - Real-time key state checking
• ✅ justPressed() / justReleased() - Frame-based detection
• ✅ getDirection() - WASD/Arrow → {x, y} direction vector
• ✅ waitForKey() - Promise-based key waiting
• ✅ onKeyDown() / onKeyUp() - Event callbacks
• ✅ Multi-key support and combinations
• ✅ Game loop integration with update()
• Tests: 49 passing | Docs: keyboard-input.md

13. Gamepad/Controller Input System

• ✅ GamepadManager class for controller support
• ✅ Button tracking with just-pressed detection
• ✅ Analog stick input (left/right) with deadzone
• ✅ D-pad directional input
• ✅ Vibration/rumble support (dual-motor)
• ✅ Multi-controller support (up to 4 players)
• ✅ Connection/disconnection events
• ✅ Frame-based updates with game loop integration
• Tests: 40 passing | Docs: gamepad-input.md

14. Pointer Input System

• ✅ PointerManager class for unified mouse/touch/pen input
• ✅ Position tracking (pixel and grid coordinates)
• ✅ Button state (left, right, middle) and touch tracking
• ✅ justPressed() / justReleased() - Frame-based detection
• ✅ onClick() / onHover() - Event callbacks
• ✅ Drag detection with delta tracking
• ✅ Grid cell hover detection
• ✅ Multi-touch and pressure support
• ✅ World coordinate conversion with camera offset
• Tests: 30+ passing | Docs: pointer-input.md
• Migration: mouse-input.md (deprecated, use PointerManager)

15. Game Loop Utility

• ✅ Fixed timestep game loop
• ✅ Delta time support for frame-independent updates
• ✅ FPS management (target and actual FPS tracking)
• ✅ Pause/resume functionality
• ✅ Elapsed time tracking
• ✅ Frame skip protection
• ✅ Optional render callback for headless mode
• Tests: 14 passing | Docs: game-loop.md

Test Coverage Summary

• Total Test Files: 21
• Total Tests: 428 total (428 passing)
• Coverage: >90% on all core modules

Build Status

• Lint: Passing ✅
• TypeScript: Compiling ✅
• Build: Success ✅
• Bundle Size:
  • ES Module: 20.37 KB (5.56 KB gzipped)
  • UMD: 13.06 KB (4.47 KB gzipped)

Commits

1. feat(core): add core types, color utilities, and CanvasTarget
2. feat(renderer): implement core Renderer class with primitives
3. feat(renderer): add box drawing functionality
4. feat(renderer): add text alignment helpers
5. feat(layers): implement layer system with z-order and compositing
6. feat(menu): implement menu helper function
7. feat(progressBar): implement progress bar helper
8. feat(panel): implement panel helper with scrollable content
9. fix: correct alignment and rect method signatures after refactoring
10. feat(camera): implement camera/viewport system with coordinate transformation
11. feat(keyboard): implement keyboard input manager with game loop integration
12. feat(mouse): implement mouse input manager with grid/world coordinate conversion
13. feat(gameloop): implement fixed timestep game loop with delta time support

Remaining Features (Future Work)

Other Planned Features

• [ ] Debug visualization
• [ ] Export/screenshot
• [ ] DOM render target

API Example

import { Renderer, CanvasTarget } from "@shaisrc/tty";

const canvas = document.getElementById("game") as HTMLCanvasElement;
const target = new CanvasTarget(canvas, { width: 80, height: 24 });
const renderer = new Renderer(target);

// Draw a simple UI
renderer
  .clear()
  .fill(0, 0, 80, 24, " ", null, "black")
  .box(2, 2, 76, 20, { style: "double", fg: "cyan" })
  .centerText(3, "=== GAME TITLE ===", { fg: "yellow" })
  .box(10, 8, 60, 10, { style: "single", fg: "white" })
  .centerText(9, "Main Menu", { fg: "white" }, 10, 60)
  .centerText(11, "> New Game", { fg: "yellow" }, 10, 60)
  .centerText(12, "Continue", { fg: "white" }, 10, 60)
  .centerText(13, "Settings", { fg: "white" }, 10, 60)
  .centerText(14, "Quit", { fg: "white" }, 10, 60)
  .render();

Development Workflow

Running Tests

npm test

Linting

npm run lint

Building

npm run build

Pre-commit Checklist

• [x] Lint passes
• [x] Tests pass (>90% coverage)
• [x] Build succeeds
• [x] Documentation updated
• [x] Commit with conventional format

Project Philosophy (KISS)

✅ Simple API - Chainable methods, smart defaults
✅ No Framework - Just drawing functions
✅ Output Agnostic - RenderTarget interface
✅ Performance First - Double-buffering, minimal overhead
✅ TypeScript First - Full type safety and autocomplete
✅ Well Tested - TDD approach, high coverage
✅ Well Documented - Complete docs for every feature

Next Steps

The core library is now fully functional for building ASCII games and UIs. Future work will focus on:

1. Examples - Create example games/demos
2. Layer System - Multi-layer rendering support
3. Helper Libraries - Menu builders, dialog systems, etc.
4. Additional Targets - DOM renderer
5. Performance - Dirty rectangle optimization
6. Publishing - Prepare for npm release

License

See LICENSE file.