564d39dfea
Resolve stacked thrown weapons versus separately equipped missile ammo exactly like gmToolbarUI, normalize a zero stack to one, and refresh the authored missile indicator from equipment and stack events. Keep the decision in pure Core with retained and real-DAT conformance coverage. Co-Authored-By: Codex <codex@openai.com>
47 lines
1.7 KiB
C#
47 lines
1.7 KiB
C#
namespace AcDream.Core.Items;
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/// <summary>
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/// Pure retail toolbar ammunition selection.
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/// Retail references: <c>gmToolbarUI::UpdateAmmoID @ 0x004BF210</c> and
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/// <c>gmToolbarUI::UpdateAmmoNumber @ 0x004BE9E0</c>.
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/// </summary>
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public static class ToolbarAmmoPolicy
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{
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public readonly record struct Result(uint ObjectId, int DisplayCount)
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{
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public bool IsVisible => ObjectId != 0;
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}
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/// <summary>
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/// Resolve the first equipped missile weapon. If it is stackable, retail
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/// treats that stack as its own ammunition (thrown weapons). Otherwise it
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/// resolves the first separately equipped missile-ammo object.
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/// </summary>
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public static Result Resolve(IReadOnlyList<ClientObject> inventoryPlacements)
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{
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ArgumentNullException.ThrowIfNull(inventoryPlacements);
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ClientObject? missileWeapon = FindAtLocation(
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inventoryPlacements,
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EquipMask.MissileWeapon);
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ClientObject? ammo = missileWeapon is { StackSizeMax: > 1 }
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? missileWeapon
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: FindAtLocation(inventoryPlacements, EquipMask.MissileAmmo);
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return ammo is null
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? default
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: new Result(ammo.ObjectId, ammo.StackSize == 0 ? 1 : ammo.StackSize);
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}
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private static ClientObject? FindAtLocation(
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IReadOnlyList<ClientObject> inventoryPlacements,
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EquipMask location)
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{
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// ACCWeenieObject::GetObjectAtLocation @ 0x0058CE00 returns the first
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// inventory placement whose location mask intersects the requested mask.
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foreach (ClientObject item in inventoryPlacements)
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if ((item.CurrentlyEquippedLocation & location) != 0)
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return item;
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return null;
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}
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}
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