inscript-lang 1.0.23

InScript — a game-focused scripting language with 59 game modules and a bytecode VM

InScript v1.0.23 — Game-Focused Scripting Language

839 tests passing · 59 stdlib modules · Python 3.10+ · Audit 9.5/10
Available on PyPI: pip install inscript-lang · First stable: v1.1.0 (Q2 2026)

InScript is a statically-typed scripting language for 2D games. v1.0.23 adds the test runner and PyPI package config — one session from the first stable release.

---

Install

# From PyPI (when v1.0.23 is uploaded)
pip install inscript-lang

# Or from source
git clone https://github.com/authorss81/inscript
cd inscript/inscript_package
pip install -e .

# Start
inscript --repl
inscript examples/platformer.ins
inscript --version   # InScript 1.0.23

---

Developer Workflow

# Run a file
inscript game.ins

# Format code
inscript --fmt game.ins           # format in place
inscript --fmt-check game.ins     # CI check

# Watch mode — auto-rerun on save
inscript --watch game.ins

# Run tests
inscript --test                   # discover test_*.ins
inscript --test --verbose         # show each test name
inscript --test --fail-fast       # stop on first failure

Test file format:

// test_physics.ins
test "collision detection" {
    import "physics2d" as P
    let r1 = P.Rect(0, 0, 10, 10)
    let r2 = P.Rect(5, 5, 10, 10)
    assert(r1.overlaps(r2), "rects should overlap")
}

test "gravity" {
    let body = physics2d.RigidBody(mass: 1.0)
    body.update(0.1)
    assert(body.vel_y > 0.0, "should fall")
}

---

Language Features

// Arrow functions
let evens  = [1,2,3,4,5].filter(fn(x) => x % 2 == 0)
let scores = students.map(fn(s) => s.score).filter(fn(n) => n >= 60)

// Nullable + union types
fn greet(name: string?) { print("Hi " ++ (name ?? "stranger")) }
fn parse(x: int|string) -> float { return float(string(x)) }

// Pattern matching with ranges and guards
match level {
    case 1..=5   { print("beginner") }
    case 6..=10  { print("intermediate") }
    case n if n > 10 { print("expert") }
}

// Result type chaining
fn load(path: string) -> Result {
    return try { Ok(read_file(path)) } catch e { Err(e) }
}
load("data.json")
    .map(fn(s) => parse_json(s))
    .unwrap_or({})

---

Feature Completeness

Category	Status
Core language (all features)	✅ Complete
Bytecode VM parity	✅ Complete (v1.0.13-18)
inscript fmt formatter	✅ v1.0.19
inscript --watch	✅ v1.0.19
inscript --test test runner	✅ v1.0.23
pyproject.toml for PyPI	✅ v1.0.23
59 stdlib modules	✅ Complete
LSP + VS Code extension	✅ Complete
Docs site	🔧 v1.0.22
Web playground	🔧 v1.0.23
v1.1.0 stable	Q2 2026

---

Tests

python test_phase6.py         # 145/145 VM
python test_phase7.py         # 32/32  operators
python test_audit.py          # 54/54  audit
python test_comprehensive.py  # 335/335 features

---

Upgrading from v0.6

Syntax is fully backward compatible. Just upgrade:

pip install --upgrade inscript-lang

All v0.6 programs run unchanged. New features are additive.

---

MIT License · GitHub · Audit (9.5/10) · Roadmap