Adds weapons (#48)

* Adds weapons

- Adds melee weapons
- Adds projectile weapons
- Adds hitscan weapons (like lasers)

* Adds a separate sprite for projectile weapons

Content.Server/GameObjects/Components/Weapon/Ranged/Hitscan/HitscanWeaponComponent.cs

@@ -0,0 +1,61 @@
+using SS14.Server.GameObjects;
+using SS14.Server.GameObjects.EntitySystems;
+using SS14.Shared.GameObjects;
+using SS14.Shared.GameObjects.EntitySystemMessages;
+using SS14.Shared.Interfaces.GameObjects;
+using SS14.Shared.Interfaces.Physics;
+using SS14.Shared.Interfaces.Timing;
+using SS14.Shared.IoC;
+using SS14.Shared.Map;
+using SS14.Shared.Maths;
+using SS14.Shared.Physics;
+using System;
+
+namespace Content.Server.GameObjects.Components.Weapon.Ranged.Hitscan
+{
+    public class HitscanWeaponComponent : RangedWeaponComponent
+    {
+        public override string Name => "HitscanWeapon";
+
+        string spritename = "laser";
+        
+        protected override void Fire(IEntity user, LocalCoordinates clicklocation)
+        {
+            var userposition = user.GetComponent<TransformComponent>().WorldPosition; //Remember world positions are ephemeral and can only be used instantaneously
+            var angle = new Angle(clicklocation.Position - userposition);
+            var theta = angle.Theta;
+            
+            var ray = new Ray(userposition, angle.ToVec());
+            var raycastresults = IoCManager.Resolve<ICollisionManager>().IntersectRay(ray, 20, Owner.GetComponent<TransformComponent>().GetMapTransform().Owner);
+
+            Hit(raycastresults);
+            AfterEffects(user, raycastresults, theta);
+        }
+
+        protected virtual void Hit(RayCastResults ray)
+        {
+            if(ray.HitEntity != null && ray.HitEntity.TryGetComponent(out DamageableComponent damage))
+            {
+                damage.TakeDamage(DamageType.Heat, 10);
+            }
+        }
+        
+        protected virtual void AfterEffects(IEntity user, RayCastResults ray, double theta)
+        {
+            var time = IoCManager.Resolve<IGameTiming>().CurTime;
+            EffectSystemMessage message = new EffectSystemMessage
+            {
+                EffectSprite = spritename,
+                Born = time,
+                DeathTime = time + TimeSpan.FromSeconds(1),
+                Size = new Vector2(ray.Distance, 1f),
+                Coordinates = user.GetComponent<TransformComponent>().LocalPosition,
+                //Rotated from east facing
+                Rotation = (float)theta,
+                ColorDelta = new Vector4(0, 0, 0, -1500f),
+                Color = new Vector4(255,255,255,750)
+            };
+            IoCManager.Resolve<IEntitySystemManager>().GetEntitySystem<EffectSystem>().CreateParticle(message);
+        }
+    }
+}