Decal system (TODO: add decals for explosions and fire), moved some of the client-specific Hull update logic to the client project

2017-07-06 21:38:32 +03:00
parent 90a584d122
commit 4d2e7c33b1
11 changed files with 391 additions and 93 deletions
@@ -0,0 +1,89 @@
+using Microsoft.Xna.Framework;
+using Microsoft.Xna.Framework.Graphics;
+using System;
+
+namespace Barotrauma.Particles
+{
+    class Decal
+    {
+        public readonly DecalPrefab Prefab;
+        public Vector2 Position;
+
+        public readonly Sprite Sprite;
+
+        private float fadeTimer;
+
+        public Color Color
+        {
+            get { return Prefab.Color; }
+        }
+
+        public float FadeTimer
+        {
+            get { return fadeTimer; }
+        }
+
+        public float LifeTime
+        {
+            get { return Prefab.LifeTime; }
+        }
+
+        private float scale;
+
+        private Rectangle clippedSourceRect;
+
+        public Decal(DecalPrefab prefab, float scale, Vector2 worldPosition, Hull hull)
+        {
+            Prefab = prefab;
+
+            //transform to hull-relative coordinates so we don't have to worry about the hull moving
+            Position = worldPosition - hull.WorldRect.Location.ToVector2();
+
+            Vector2 drawPos = Position + hull.Rect.Location.ToVector2();
+
+            Sprite = prefab.Sprites[Rand.Range(0, prefab.Sprites.Count, Rand.RandSync.Unsynced)];
+
+            Rectangle drawRect = new Rectangle(
+                (int)(drawPos.X - Sprite.size.X / 2 * scale),
+                (int)(drawPos.Y + Sprite.size.Y / 2 * scale),
+                (int)(Sprite.size.X * scale),
+                (int)(Sprite.size.Y * scale));
+
+            Rectangle overFlowAmount = new Rectangle(
+                (int)Math.Max(hull.Rect.X - drawRect.X, 0.0f),
+                (int)Math.Max(drawRect.Y - hull.Rect.Y, 0.0f),
+                (int)Math.Max(drawRect.Right - hull.Rect.Right, 0.0f),
+                (int)Math.Max((hull.Rect.Y - hull.Rect.Height) - (drawRect.Y - drawRect.Height), 0.0f));           
+
+            clippedSourceRect = new Rectangle(
+                Sprite.SourceRect.X + (int)(overFlowAmount.X / scale),
+                Sprite.SourceRect.Y + (int)(overFlowAmount.Y / scale),
+                Sprite.SourceRect.Width - (int)((overFlowAmount.X + overFlowAmount.Width) / scale),
+                Sprite.SourceRect.Height - (int)((overFlowAmount.Y + overFlowAmount.Height) / scale));
+
+            Position -= new Vector2(Sprite.size.X / 2 * scale - overFlowAmount.X, -Sprite.size.Y / 2 * scale + overFlowAmount.Y);
+
+            this.scale = scale;
+        }
+
+        public void Update(float deltaTime)
+        {
+            fadeTimer += deltaTime;
+        }
+
+        public void Draw(SpriteBatch spriteBatch, Hull hull)
+        {
+            Vector2 drawPos = Position + hull.Rect.Location.ToVector2();
+            drawPos += hull.Submarine.DrawPosition;
+            drawPos.Y = -drawPos.Y;
+
+            float a = 1.0f;
+            if (fadeTimer > Prefab.LifeTime - Prefab.FadeTime)
+            {
+                a = (Prefab.LifeTime - fadeTimer) / Prefab.FadeTime;
+            }
+            
+            spriteBatch.Draw(Sprite.Texture, drawPos, clippedSourceRect, Color * a, 0, Vector2.Zero , scale, SpriteEffects.None, 1);
+        }
+    }
+}