ChemicalAmmoComponent (#2739)

* ChemicalAmmoComponent

* Moves BarrelFiredMessage to FireProjectiles

Co-authored-by: py01 <pyronetics01@gmail.com>

Content.Server/GameObjects/Components/Weapon/Ranged/Ammunition/ChemicalAmmoComponent.cs

@@ -0,0 +1,66 @@
+using Content.Server.GameObjects.Components.Chemistry;
+using Content.Server.GameObjects.Components.Weapon.Ranged.Barrels;
+using Content.Shared.Chemistry;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.Serialization;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace Content.Server.GameObjects.Components.Weapon.Ranged.Ammunition
+{
+    [RegisterComponent]
+    public class ChemicalAmmoComponent : Component
+    {
+        public override string Name => "ChemicalAmmo";
+
+        private float _fractionTransfered;
+
+        public override void ExposeData(ObjectSerializer serializer)
+        {
+            base.ExposeData(serializer);
+            serializer.DataField(ref _fractionTransfered, "fractionTransfered", 1);
+        }
+
+        public override void HandleMessage(ComponentMessage message, IComponent component)
+        {
+            base.HandleMessage(message, component);
+            switch (message)
+            {
+                case BarrelFiredMessage barrelFired:
+                    TransferSolution(barrelFired);
+                    break;
+            }
+        }
+
+        private void TransferSolution(BarrelFiredMessage barrelFired)
+        {
+            if (!Owner.TryGetComponent<SolutionContainerComponent>(out var ammoSolutionContainer))
+                return;
+
+            var projectiles = barrelFired.FiredProjectiles;
+
+            var projectileSolutionContainers = new List<SolutionContainerComponent>();
+            foreach (var projectile in projectiles)
+            {
+                if (projectile.TryGetComponent<SolutionContainerComponent>(out var projectileSolutionContainer))
+                {
+                    projectileSolutionContainers.Add(projectileSolutionContainer);
+                }
+            }
+
+            if (!projectileSolutionContainers.Any())
+                return;
+
+            var solutionPerProjectile = ammoSolutionContainer.CurrentVolume * (1 / projectileSolutionContainers.Count);
+
+            foreach (var projectileSolutionContainer in projectileSolutionContainers)
+            {
+                var solutionToTransfer = ammoSolutionContainer.SplitSolution(solutionPerProjectile);
+                projectileSolutionContainer.TryAddSolution(solutionToTransfer);
+            }
+
+            ammoSolutionContainer.RemoveAllSolution();
+        }
+    }
+}