Iron Crown boss
A standalone API 1 mod for the Iron Coast finale. It adds a new command Dreadnought with broad armored wings and three forward cannon pods, matching the industrial overhead style of the original game. The package has no mod dependencies and does not replace any original or Iron Coast enemy definition.
- Enemy:
iron_coast_boss_6:unit; health 160, reward 1800, air boss, logical 96×64. - Weapon:
iron_coast_boss_6:projectile; damage 3, speed 4, logical 8×8. - Objective: every actual boss death increments
iron_coast_boss_6:defeated. - Entry: fly downward to y 24, then patrol between x 80 and x 144.
- Attack: every 54 simulation ticks, alternate a three-shell fan with two straight cannon lanes. A rising charging sound begins nine ticks before each volley. At 70/3 Hz this gives 0.386 seconds warning before a 2.314-second volley cycle. Charging creates no explosion effects.
- State: per-entity patrol direction, age and volley cursor; removed on death. Supports the finale's two staged bosses and simultaneous spawns. It never completes a mission directly or fires from retired entities.
Difficulty uses the engine's original boss health rule: definitions retain 160 health, and the two lower difficulty levels spawn bosses with 80 health.
art/unit-sd.png and art/unit-hd.png share one centered 96×64 logical canvas.
The HD texture is 768×512 (8×) and the SD version is derived from the same
transparent generated master. The cannon shell likewise has matching 8×8 and
64×64 versions. art-qa.json records bounds and source hashes. The supplied
alpha is preserved; runtime colors with alpha below 128 remain transparent.
The built-in imagegen tool generated both masters. Exact prompts live in
prompts/; provenance.json records their outputs. All authored images and
sounds belong in Git. Original sprite references remain outside this package.
Reproduce the deterministic sounds and SD/HD reductions with:
python3 RustRaptor/mods/iron_coast_boss_6/build_assets.py
--audio-only needs only Python's standard library. audio-recipe.json
records seeds, PCM properties and hashes. The sounds are non-silent PCM16
mono 22050 Hz charging, firing and destruction cues; no recordings are used.
Validate activation and lifecycle behavior using the production simulation:
CARGO_TARGET_DIR=RustRaptor/target cargo run --offline \
--manifest-path RustRaptor/mods/iron_coast_boss_6/validation/Cargo.toml
The validation checks alternating patterns, warning timing, independent
entity state, serialized state restoration, death counter/reward behavior,
dead-enemy firing guards and two staged encounters on all four difficulties.
validation-results.json records the controlled outcomes. The complete
mission 6 mod runs separate campaign and balance checks with its other enemies.