unity-ecs-patterns

Expected outcome:

• Component Definition:
• ```csharp
• public struct Health : IComponentData
• {
• public float Current;
• public float Max;
• }
• ```
•  
• Healing System:
• ```csharp
• [BurstCompile]
• public partial struct HealthRegenSystem : ISystem
• {
• public void OnUpdate(ref SystemState state)
• {
• float deltaTime = SystemAPI.Time.DeltaTime;
• float regenRate = 5f;
•  
• foreach (var health in
• SystemAPI.Query<RefRW<Health>>())
• {
• health.ValueRW.Current = math.min(
• health.ValueRO.Max,
• health.ValueRO.Current + regenRate * deltaTime
• );
• }
• }
• }
• ```

Expected outcome:

• 1. Create an Authoring MonoBehaviour:
• ```csharp
• public class EnemyAuthoring : MonoBehaviour
• {
• public float Speed;
• public float Health;
•  
• class Baker : Baker<EnemyAuthoring>
• {
• public override void Bake(EnemyAuthoring authoring)
• {
• var entity = GetEntity(TransformUsageFlags.Dynamic);
• AddComponent(entity, new Speed { Value = authoring.Speed });
• AddComponent(entity, new Health { Current = authoring.Health, Max = authoring.Health });
• }
• }
• }
• ```
•  
• 2. Add the authoring component to a GameObject in the Editor
• 3. The baking system automatically converts it to an entity at build time

Expected outcome:

This requires a spatial hash approach. First, build a spatial hash map in a parallel job. Then run a second pass that queries nearby cells and applies damage. The spatial hash function uses prime number multiplication for uniform distribution: `hash = x * 73856093 ^ y * 19349663 ^ z * 83492791`.