From f4c5c5e542b40d7207b628225eb609844e6e0a88 Mon Sep 17 00:00:00 2001
From: Regalis <regalis@undertowgames.com>
Date: Sun, 9 Oct 2016 15:13:41 +0300
Subject: [PATCH] Added a particle trail to railgun shells

---
 Subsurface/Content/Items/Weapons/railgun.xml  |  9 +++++++++
 .../Source/Items/Components/Projectile.cs     |  6 ++++++
 Subsurface/Source/Map/Map/Map.cs              |  5 +++++
 .../Source/Particles/ParticleEmitter.cs       | 20 ++++++++++++++++++-
 4 files changed, 39 insertions(+), 1 deletion(-)

diff --git a/Subsurface/Content/Items/Weapons/railgun.xml b/Subsurface/Content/Items/Weapons/railgun.xml
index 3540372e6..5d5922029 100644
--- a/Subsurface/Content/Items/Weapons/railgun.xml
+++ b/Subsurface/Content/Items/Weapons/railgun.xml
@@ -82,6 +82,10 @@
     
     <Projectile launchimpulse="80.0">
       <Attack damage="100" bleedingdamage="10" structuredamage="200" damagetype="Blunt"/>
+
+      <StatusEffect type="OnActive" target="This">
+        <ParticleEmitter particle="bubbles" anglemin="0" anglemax="360" particleamount="10" velocitymin="0" velocitymax="50" scalemin="2" scalemax="5"/>
+      </StatusEffect>
     </Projectile>
 
     <ItemContainer hideitems="true" capacity="1" canbeselected = "true">
@@ -110,9 +114,14 @@
 
     <Projectile launchimpulse="80.0">
       <Attack damage="1000" bleedingdamage="10" structuredamage="200" damagetype="Blunt"/>
+      
       <StatusEffect type="OnUse" Condition="-100.0" stun="10.0" disabledeltatime="true" sound="Content/Items/Weapons/bigexplosion.ogg">
         <Explosion range="1000.0" structuredamage="1000" damage="1000" stun="10" force="50.0"/>
       </StatusEffect>
+
+      <StatusEffect type="OnActive" target="This">
+        <ParticleEmitter particle="bubbles" anglemin="0" anglemax="360" particleamount="10" velocitymin="0" velocitymax="50" scalemin="2" scalemax="5"/>
+      </StatusEffect>
     </Projectile>
 
     <ItemContainer hideitems="true" capacity="1" canbeselected = "true">
diff --git a/Subsurface/Source/Items/Components/Projectile.cs b/Subsurface/Source/Items/Components/Projectile.cs
index b9a173a0a..06571e940 100644
--- a/Subsurface/Source/Items/Components/Projectile.cs
+++ b/Subsurface/Source/Items/Components/Projectile.cs
@@ -88,6 +88,8 @@ namespace Barotrauma.Items.Components
             item.body.CollisionCategories = Physics.CollisionProjectile;
             item.body.CollidesWith = Physics.CollisionCharacter | Physics.CollisionWall | Physics.CollisionLevel;
 
+            IsActive = true;
+
             if (stickJoint == null || !doesStick) return;
 
             if (stickTarget != null)
@@ -111,6 +113,8 @@ namespace Barotrauma.Items.Components
         
         public override void Update(float deltaTime, Camera cam)
         {
+            ApplyStatusEffects(ActionType.OnActive, deltaTime, null); 
+
             if (stickJoint != null && stickJoint.JointTranslation < 0.01f)  
             {
                 if (stickTarget != null)
@@ -174,6 +178,8 @@ namespace Barotrauma.Items.Components
             ApplyStatusEffects(ActionType.OnUse, 1.0f);
             ApplyStatusEffects(ActionType.OnImpact, 1.0f);
 
+            IsActive = false;
+
             item.body.FarseerBody.OnCollision -= OnProjectileCollision;
 
             item.body.FarseerBody.IsBullet = false;
diff --git a/Subsurface/Source/Map/Map/Map.cs b/Subsurface/Source/Map/Map/Map.cs
index a15b19bea..64eae3e71 100644
--- a/Subsurface/Source/Map/Map/Map.cs
+++ b/Subsurface/Source/Map/Map/Map.cs
@@ -309,6 +309,11 @@ namespace Barotrauma
                 {
                     crackColor = Color.Red;
                 }
+                else if (highlightedLocation != currentLocation &&
+                (connection.Locations.Contains(highlightedLocation) && connection.Locations.Contains(currentLocation)))
+                {
+                    crackColor = Color.Red * 0.5f;
+                }
                 else if (!connection.Passed)
                 {
                     crackColor *= 0.2f;
diff --git a/Subsurface/Source/Particles/ParticleEmitter.cs b/Subsurface/Source/Particles/ParticleEmitter.cs
index 593f9abc5..3defc25f0 100644
--- a/Subsurface/Source/Particles/ParticleEmitter.cs
+++ b/Subsurface/Source/Particles/ParticleEmitter.cs
@@ -15,6 +15,8 @@ namespace Barotrauma.Particles
 
         public readonly float VelocityMin, VelocityMax;
 
+        public readonly float ScaleMin, ScaleMax;
+
         public readonly float ParticleAmount;
 
         public ParticleEmitterPrefab(XElement element)
@@ -37,6 +39,17 @@ namespace Barotrauma.Particles
             AngleMin = MathHelper.ToRadians(AngleMin);
             AngleMax = MathHelper.ToRadians(AngleMax);
 
+            if (element.Attribute("scalemin")==null)
+            {
+                ScaleMin = 1.0f;
+                ScaleMax = 1.0f;
+            }
+            else
+            {
+                ScaleMin = ToolBox.GetAttributeFloat(element,"scalemin",1.0f);
+                ScaleMax = Math.Max(ScaleMin, ToolBox.GetAttributeFloat(element, "scalemax", 1.0f));
+            }
+
             if (element.Attribute("velocity") == null)
             {
                 VelocityMin = ToolBox.GetAttributeFloat(element, "velocitymin", 0.0f);
@@ -58,7 +71,12 @@ namespace Barotrauma.Particles
                 float angle = Rand.Range(AngleMin, AngleMax);
                 Vector2 velocity = new Vector2((float)Math.Cos(angle), (float)Math.Sin(angle)) * Rand.Range(VelocityMin, VelocityMax);
 
-                GameMain.ParticleManager.CreateParticle(particlePrefab, position, velocity, 0.0f, hullGuess);
+                var particle = GameMain.ParticleManager.CreateParticle(particlePrefab, position, velocity, 0.0f, hullGuess);
+
+                if (particle!=null)
+                {
+                    particle.Size *= Rand.Range(ScaleMin, ScaleMax);
+                }
             }
         }
     }