Progress bars that show the health of wall sections when welding/cutting

Subsurface/Source/Characters/Character.cs

@@ -93,6 +93,8 @@ namespace Barotrauma
         protected Item closestItem;
         private Character closestCharacter, selectedCharacter;
 
+        private Dictionary<object, HUDProgressBar> hudProgressBars;
+
         protected bool isDead;
         private CauseOfDeath lastAttackCauseOfDeath;
         private CauseOfDeath causeOfDeath;
@@ -498,6 +500,8 @@ namespace Barotrauma
             
             selectedItems = new Item[2];
 
+            hudProgressBars = new Dictionary<object, HUDProgressBar>();
+
             IsNetworkPlayer = isNetworkPlayer;
 
             oxygen = 100.0f;
@@ -516,8 +520,6 @@ namespace Barotrauma
 
             XDocument doc = ToolBox.TryLoadXml(file);
             if (doc == null || doc.Root == null) return;
-
-            
             
             SpeciesName = ToolBox.GetAttributeString(doc.Root, "name", "Unknown");
 
@@ -1184,6 +1186,16 @@ namespace Barotrauma
             {
                 Lights.LightManager.ViewTarget = this;
                 CharacterHUD.Update(deltaTime, this);
+
+                foreach (HUDProgressBar progressBar in hudProgressBars.Values)
+                {
+                    progressBar.Update(deltaTime);
+                }
+
+                foreach (var pb in hudProgressBars.Where(pb => pb.Value.FadeTimer<=0.0f).ToList())
+                {
+                    hudProgressBars.Remove(pb.Key);
+                }
             }
 
             if (IsUnconscious)
@@ -1292,8 +1304,6 @@ namespace Barotrauma
         {
             if (!Enabled) return;
 
-            Vector2 pos = DrawPosition;
-            pos.Y = -pos.Y;
 
             if (GameMain.DebugDraw)
             {
@@ -1302,7 +1312,18 @@ namespace Barotrauma
                 if (aiTarget != null) aiTarget.Draw(spriteBatch);
             }
 
-            if (this == controlled) return;
+            if (this == controlled)
+            {
+                foreach (HUDProgressBar progressBar in hudProgressBars.Values)
+                {
+                    progressBar.Draw(spriteBatch);
+                }
+
+                return;
+            }
+
+            Vector2 pos = DrawPosition;
+            pos.Y = -pos.Y;
 
             if (info != null)
             {
@@ -1333,6 +1354,26 @@ namespace Barotrauma
             }
         }
 
+        /// <summary>
+        /// Creates a progress bar that's "linked" to the specified object (or updates an existing one if there's one already linked to the object)
+        /// The progress bar will automatically fade out after 1 sec if the method hasn't been called during that time
+        /// </summary>
+        public HUDProgressBar UpdateHUDProgressBar(object linkedObject, Vector2 worldPosition, float progress, Color emptyColor, Color fullColor)
+        {
+            HUDProgressBar progressBar = null;
+            if (!hudProgressBars.TryGetValue(linkedObject, out progressBar))
+            {
+                progressBar = new HUDProgressBar(worldPosition, emptyColor, fullColor);
+                hudProgressBars.Add(linkedObject, progressBar);
+            }
+
+            progressBar.WorldPosition = worldPosition;
+            progressBar.FadeTimer = Math.Max(progressBar.FadeTimer, 1.0f);
+            progressBar.Progress = progress;
+
+            return progressBar;
+        }
+
         public void PlaySound(AIController.AiState state)
         {
             if (sounds == null || !sounds.Any()) return;

Subsurface/Source/Characters/HUDProgressBar.cs

@@ -0,0 +1,60 @@
+using Microsoft.Xna.Framework;
+using Microsoft.Xna.Framework.Graphics;
+using System;
+
+namespace Barotrauma
+{
+    class HUDProgressBar
+    {
+        private float progress;
+
+        public float Progress
+        {
+            get { return progress; }
+            set { progress = MathHelper.Clamp(value, 0.0f, 1.0f); }
+        }
+
+        public float FadeTimer;
+
+        private Color fullColor, emptyColor;
+
+        public Vector2 WorldPosition;
+
+        public Vector2 Size;
+
+        public HUDProgressBar(Vector2 worldPosition)
+            : this(worldPosition, Color.Red, Color.Green)
+        {
+        }
+
+        public HUDProgressBar(Vector2 worldPosition, Color emptyColor, Color fullColor)
+        {
+            this.emptyColor = emptyColor;
+            this.fullColor = fullColor;
+
+            WorldPosition = worldPosition;
+
+            Size = new Vector2(100.0f, 20.0f);
+
+            FadeTimer = 1.0f;
+        }
+
+        public void Update(float deltatime)
+        {
+            FadeTimer -= deltatime;
+        }
+
+        public void Draw(SpriteBatch spriteBatch)
+        {
+            float a = Math.Min(FadeTimer,1.0f);
+
+            GUI.DrawProgressBar(spriteBatch, 
+                new Vector2(WorldPosition.X - Size.X/2, (WorldPosition.Y + Size.Y/2)),
+                Size, progress, 
+                Color.Lerp(emptyColor, fullColor, progress) * a,
+                Color.White * a * 0.8f);
+        }
+
+
+    }
+}