RustRaptor/mods/iron_coast_mission_6

Iron Coast 6 — Iron Crown

The finale raids the offshore command citadel. Destroy all six fixed batteries and both command cruisers to end the Iron Coast operation. The second cruiser arrives at tick 2,350, about 101 seconds into the mission; there is no survival timeout that bypasses the objectives. Surviving batteries remain anchored at y48 or y80 and cruisers patrol at y24, so required targets cannot escape.

This is an independent local mod with mission ID iron_coast_mission_6:mission_06. Enable it in Mods; the game automatically selects its seven installed dependencies: iron_coast_scout, iron_coast_turret, iron_coast_boss_6, pulse_cannon, seeker_swarm, ion_lance and iron_coast_music, all compatible with ^1.0. It has no mission-to-mission dependency and no definition overrides. The optional iron_coast_campaign assembly adds the full six-level progression.

Select Ion Lance with Alt or Shift and hold Ctrl to fire. Aim the narrow column at ground batteries, then track the broad command cruiser. Space drops bombs if the pilot owns them. The sortie lends an Ion Lance only when a free inventory slot exists, returns that loan on success or failure, and preserves an already owned copy. A full 20-slot inventory, including physical reserve super-shield modules, can still start without equipment loss. Pilots receive 25 shield on arrival and 20 shield at each cruiser phase, clamped to 100.

The finale awards a 30,000-credit completion bonus once, in addition to normal enemy rewards. There are 21 custom scout sorties, six classic aircraft, six batteries and two Iron Crown bosses. The classic aircraft directly reference base:enemy_0_73, base:enemy_0_74, base:enemy_0_23, base:enemy_0_24, base:enemy_0_95 and base:enemy_0_96, retaining their original loop, sweeping and banking flight paths without cloning or overriding definitions. Original pixels stay outside this package. The campaign music is iron_coast_music:iron_coast. The terrain definition spans 3,800 ticks, about 163 seconds, and completion remains objective-driven if a pilot needs longer to finish surviving targets.

art/terrain-source-hd.png and art/briefing-source-hd.png are new artwork generated using the built-in imagegen skill. prompts.json records both exact prompts, reference role and provenance. The source terrain is packaged into 216 paired 32px SD/128px HD tiles, plus a 320×200 SD/1280×800 HD briefing card. SD art uses the original game's palette. A single joined-canvas conversion preserves horizontal tile seams; reflected vertical repetition has identical boundary pixels. Four original PCM16 mono WAV cues provide approach, fleet alarm, final command alarm and victory audio. Generated art and audio belong in Git; no original catalog image is copied into this package.

Repackage derived files with:

python RustRaptor/mods/iron_coast_mission_6/build_assets.py

The local palette source is required only for repackaging. Validate actual shipped mod files and production deterministic simulation with:

CARGO_TARGET_DIR=RustRaptor/target cargo run --offline --manifest-path \
  RustRaptor/mods/iron_coast_mission_6/validation/Cargo.toml

The runner checks all four difficulties with the registered pilot's 75 shield and 10,000 credits and the deterministic fixture's 100 shield and zero credits. It uses the loan without buying a premium weapon, bounds lateral movement to 4 pixels per tick, tests six reachable batteries, full inventories, reserve modules, restart reset, owned-weapon retention on success/failure and one-time reward payment. The eight loan runs finish at ticks 2,385–2,426 with 100 shield. A registered pilot with 20 neutral inventory slots and only the starter guns finishes at tick 2,512 with 95 shield, without receiving a loan. It records outcomes in validation-results.json. The actual original asset catalog and native enemy definitions are used locally. Additional neutral fixture items only fill inventory slots for the no-loan safety check. Set RAPTOR_TEST_DATA if the original catalog lives elsewhere.