Corvette

Adds an age-of-sail Corvette and its cannons to Valheim.

What you get

Piece	What it is
Corvette	Three-masted warship with its own hull model: 8 guns per broadside, 2 bow chasers, 2 stern chasers. Sails and handles like the Drakkar, with the Drakkar's storage.
Airship (Zeppelin)	The Corvette hull without masts, slung on shrouds under a canvas envelope, with a stern propeller instead of a rudder. Same 20 guns.
Airship (Rotor)	The Corvette hull lifted by four rotors on its yards, with a stern propeller instead of a rudder. Same 20 guns.
Cannon	Placeable defense cannon, built and removed at a workbench. Wears out after 10000 shots and must then be repaired with the hammer.
Cannon cart	A cannon on a cart. Pull it like a normal cart; the gun points to the rear. It only fires while parked (not being pulled, not moving) with a player within 5 m.
Earth Staff	A staff that deals no damage and only shapes terrain: left click = yellow orb that digs, right click = red orb that raises the ground. Workbench: Fine wood 10, Stone 30, Surtling core 1. Spawn: spawn VVLEE_StaffEarth.

All cannons aim and fire automatically at hostile creatures inside their arc, with target lead and ballistic drop compensation. Shells explode like the Staff of Fracturing (cluster blast + splinters). Cannons need no ammunition.

Flying the airships

First light the boiler: walk up to the boiler amidships and add coal (same prompt as a smelter; it holds 50, one coal lasts a minute of flight, nothing burns while the airship sits on the water). With a cold boiler an airship cannot climb, and one that runs out in the air sinks slowly.

Then take the helm as on a ship. Hold Jump (Space) to climb and Crouch (Ctrl) to descend; leave the helm with the Use key. Steering, sail settings and wind work as on the Corvette, with a downwind top speed of 150%. Brought down to sea level an airship floats like a ship.

• Ceiling 800 m. Above 500 m the crew is warned; above 600 m the airship slowly loses durability.
• Below 50% durability it cannot climb. Below 30% it sinks slowly to 100 m and moves at half speed. Repair it with the hammer.

Building (Hammer, at a workbench)

The Corvette and the cannons unlock in the black-metal age (Plains): no Mistlands or Ashlands materials are needed. The two airships are Ashlands technology and need Ashlands materials.

Piece	Materials
Corvette	Fine wood 80, Iron nails 200, Black metal 40, Linen thread 40, Tar 20
Airship (Zeppelin)	Ashwood 80, Iron nails 200, Flametal 20, Linen thread 100, Tar 20, Ceramic plate 20, Surtling core 10
Airship (Rotor)	Ashwood 120, Iron nails 200, Flametal 30, Linen thread 40, Tar 20, Ceramic plate 20, Surtling core 10
Cannon	Iron 15, Black metal 10, Fine wood 10
Cannon cart	Iron 15, Black metal 10, Fine wood 10, Wood 30, Bronze nails 10

Admins can also spawn them: spawn VVLEE_Corvette, spawn VVLEE_AirshipZeppelin, spawn VVLEE_AirshipVtol, spawn VVLEE_Cannon, spawn VVLEE_CannonCart.

Configuration

BepInEx/config/com.vvlee.corvette.cfg (server-synced, admin only):

Setting	Default	Description
Cooldown	5	Seconds between shots per gun
BurstSize	10	Each gun takes an extra pause after this many shots (0 = never)
BurstCooldown	5	Length of that extra pause in seconds
Airship: MaxAltitude	800	Airship ceiling in m above sea level
Airship: WarnAltitude	500	Crew is warned above this altitude
Airship: WearAltitude / WearPerSecond	600 / 0.2	Above this altitude the airship loses this many percent of durability per second
Airship: NoClimbHealth	50	Below this durability (%) an airship cannot climb
Airship: CrippledHealth / EmergencyAltitude / CrippledSpeed	30 / 100 / 0.5	Below this durability (%) an airship sinks slowly to this altitude and moves at this fraction of its speed
Airship: RequireFuel / FuelCapacity / SecondsPerCoal	true / 50 / 60	Airships need coal in the boiler; how much it holds; seconds of flight per coal
Airship: ClimbRate	4	Climb and descent rate (m/s)
Airship: DownwindSpeed	1.5	Airship speed with the wind dead astern, as a multiple of the Drakkar's
MaxRange	150	Maximum targeting range (m) of the placed Cannon and Cannon cart. Creatures outside the loaded area cannot be targeted
ShipMaxRange	100	Maximum targeting range (m) of the Corvette's guns
TreeDamage	100	Cannon hits on trees, logs, stumps and bushes also deal this percentage of their damage as chop damage (0 = cannons cannot harm trees)
FireRange	140	The placed Cannon and Cannon cart track a target out to MaxRange but only open fire within this distance (m)
ShipFireRange	100	Same for the Corvette's and airships' guns (tracking range is ShipMaxRange)
MinRange	6	Guns hold fire with shells on targets closer than this (canister shot ignores it)
CanisterRange	30	Hostiles within this distance (m) are engaged with canister shot: a volley of Dundr bolts instead of a shell (0 = never)
CanisterPellets	60	Bolts per canister volley
CanisterPierce	200	Pierce damage added to every bolt, in percent of the damage of a fully upgraded Dundr
CanisterCooldown	5	Seconds between canister volleys per gun
CanisterBurstSize	3	Extra pause after this many canister volleys in a row (0 = never)
CanisterBurstCooldown	5	Length of that extra pause in seconds
DamageMultiplier	1	Multiplier on top of the damage of a fully upgraded Staff of Fracturing at max skill
DirectHitBlunt	50	Extra blunt damage on a direct hit, % of the shell's total damage
DirectHitPierce	30	Extra pierce damage on a direct hit, % of the shell's total damage
DirectHitKnockback	150	Knockback force of a direct hit
DirectHitStagger	true	Direct hits stagger the creature
ShellSpeed	70	Muzzle velocity (m/s)
BroadsideArc	35	Traverse of the Corvette's broadside guns (degrees each side)
ChaserArc	35	Traverse of the Corvette's bow/stern chasers
CannonMaxShots	10000	Shots a placed Cannon fires before it needs a hammer repair (0 = unlimited)
ShipFreeShots	10000	Shots a Corvette fires before further shots wear the hull (0 = never)
ShipWearPerShot	0.1	Hull health lost per shot after that, in % of max hull health
ShipCeaseFireHealth	30	Ship guns stop firing below this hull health %
FieldArc	60	Traverse of the placed cannon and the cannon cart
CartCrewRange	5	The cannon cart only fires while parked with a player within this distance (m)
RequireCrew	true	Ship guns only work while someone is at the helm or in the captain's seat (off: any player aboard)
IgnoreFlyersSmallerThan	1.2	Cannons ignore flying creatures no larger than this (m): Deathsquitos, bats. 0 = attack all
TargetPassiveAnimals	false	Also fire at deer, hares, etc.
WaterlineOffset	0	Raise or lower how high the Corvette floats
DownwindSpeed	2	Speed with the wind dead astern, as a multiple of the Drakkar's (fades toward a beam wind; upwind unchanged)
ReverseDredge	true	In reverse, terrain touching the keel is dug away so the ship can back off a shoal
BowTrim	1.5	Fore-and-aft trim: positive lifts the bow, negative lowers it
BallistaAutoReload	true	Vanilla ballistas refill from the nearest chest holding ballista ammunition
BallistaReloadRange	10	How far (m) a ballista looks for that chest
FriendlyFireProtection	true	Ballistas never target players or tamed creatures; ballista, catapult, cannon and player projectiles and their blasts do not hurt players, tamed creatures, ships, carts or player-built pieces

Notes

• Friendly-fire protection covers every friendly projectile in the game, including vanilla ballistas and catapults: they no longer hurt players, tamed creatures, ships, carts or your buildings. Monster attacks are unaffected.
• Everyone on a server (and the server itself) must have the mod installed.
• Models are generated procedurally by the mod; no asset bundles.
• Requires Jotunn.

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中文說明

新增風帆時代 克爾維特艦（Corvette） 與 火炮：

• 克爾維特艦：專屬三桅船殼，兩舷各 8 門炮、艦首與艦尾各 2 門追擊炮；航行性能與貨艙沿用 Drakkar。
• 火炮：可建造的防禦物件；開火 10000 次後需用錘子修理，可在工作台範圍內拆除。
• 艦炮耐久：艦炮本身沒有耐久；全艦累計開火 10000 次後，每開一炮扣 0.1% 船體血量，船體低於 30% 時停火；修船後重新計算 10000 次。
• 拖曳火炮：架在板車上的火炮，像板車一樣拖著走，炮口朝後；放定且周圍 5 公尺內有人才會開火。

火炮會自動索敵開火（含提前量與彈道下墜），炮彈為 碎裂法杖 的爆炸效果，陸上火炮最遠射程 150 m、艦炮 100 m，不需彈藥。 設定檔為 com.vvlee.corvette.cfg。