68 lines
3.2 KiB
C#
68 lines
3.2 KiB
C#
using Unity.Burst;
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using Unity.Entities;
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using Unity.Mathematics;
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using Unity.NetCode;
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namespace ProjectM.Simulation
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{
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/// <summary>
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/// Folds each modifiable entity's authored base stats (from the AbilityDatabase blob, keyed by
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/// AbilityRef / CharacterStatsRef) with its replicated StatModifier buffer into the
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/// EffectiveAbilityStats / EffectiveCharacterStats components - every predicted tick, on both worlds.
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///
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/// Runs at the head of the predicted group (UpdateBefore PlayerAimSystem;
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/// AbilityFireSystem runs after PlayerAimSystem, so it sees fresh values too). Recompute is
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/// unconditional every tick: it is a pure function of (blob base + replicated buffer), both of which
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/// are restored on rollback, so predicted and server results always agree. A dirty-flag / change
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/// filter would be WRONG here - the Effective* components are NOT in the ghost snapshot and would go
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/// stale across reprediction.
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/// </summary>
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[UpdateInGroup(typeof(PredictedSimulationSystemGroup))]
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[UpdateBefore(typeof(PlayerAimSystem))]
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[BurstCompile]
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public partial struct StatRecomputeSystem : ISystem
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{
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[BurstCompile]
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public void OnCreate(ref SystemState state)
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{
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state.RequireForUpdate<AbilityDatabase>();
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}
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[BurstCompile]
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public void OnUpdate(ref SystemState state)
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{
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var database = SystemAPI.GetSingleton<AbilityDatabase>();
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ref var db = ref database.Value.Value;
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foreach (var (abilityRef, charRef, mods, effAbility, effChar) in
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SystemAPI.Query<RefRO<AbilityRef>, RefRO<CharacterStatsRef>, DynamicBuffer<StatModifier>,
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RefRW<EffectiveAbilityStats>, RefRW<EffectiveCharacterStats>>()
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.WithAll<Simulate>())
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{
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if (db.TryGetAbility(abilityRef.ValueRO.Id, out var a))
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{
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effAbility.ValueRW = new EffectiveAbilityStats
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{
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Damage = StatMath.Apply(a.Damage, StatTarget.Damage, mods),
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ProjectileSpeed = StatMath.Apply(a.ProjectileSpeed, StatTarget.ProjectileSpeed, mods),
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Range = StatMath.Apply(a.Range, StatTarget.Range, mods),
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AutoTargetRange = StatMath.Apply(a.AutoTargetRange, StatTarget.AutoTargetRange, mods),
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AutoTargetConeRadians = StatMath.Apply(a.AutoTargetConeRadians, StatTarget.AutoTargetConeRadians, mods),
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CooldownTicks = (int)math.round(StatMath.Apply(a.CooldownTicks, StatTarget.CooldownTicks, mods)),
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};
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}
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if (db.TryGetCharacter(charRef.ValueRO.Id, out var c))
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{
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effChar.ValueRW = new EffectiveCharacterStats
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{
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MoveSpeed = StatMath.Apply(c.MoveSpeed, StatTarget.MoveSpeed, mods),
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TurnRateRadiansPerSec = StatMath.Apply(c.TurnRateRadiansPerSec, StatTarget.TurnRate, mods),
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MaxHealth = StatMath.Apply(c.MaxHealth, StatTarget.MaxHealth, mods),
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};
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}
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}
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}
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}
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}
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