Added button disable support. Added ability to darken sprite. Added ok button to char select

OpenDiablo2.Common/Interfaces/ISprite.cs

@@ -13,5 +13,6 @@ namespace OpenDiablo2.Common.Interfaces
         int TotalFrames { get; }
         Palette CurrentPalette { get; set; }
         bool Blend { get; set; }
+        bool Darken { get; set; }
     }
 }

OpenDiablo2.Core/UI/Button.cs

@@ -40,6 +40,20 @@ namespace OpenDiablo2.Core.UI
         private bool active = false; // When true, button is actively being focus pressed
         private bool activeLock = false; // When true, something else is being pressed so ignore everything
         private Point labelOffset = new Point();
+
+        private bool enabled = true;
+        public bool Enabled
+        {
+            get => enabled;
+            set
+            {
+                if (value == enabled)
+                    return;
+                enabled = value;
+
+                sprite.Darken = !enabled;
+            }
+        }
         
         private string text;
         public string Text
@@ -82,6 +96,19 @@ namespace OpenDiablo2.Core.UI
 
         public void Update()
         {
+            if (!enabled)
+            {
+                // Prevent sticky locks
+                if (activeLock && mouseInfoProvider.ReserveMouse)
+                {
+                    activeLock = false;
+                    mouseInfoProvider.ReserveMouse = false;
+                }
+
+                active = false;
+                return;
+            }
+
             var hovered = (mouseInfoProvider.MouseX >= location.X && mouseInfoProvider.MouseX < (location.X + buttonWidth))
                 && (mouseInfoProvider.MouseY >= location.Y && mouseInfoProvider.MouseY < (location.Y + buttonHeight));
 

OpenDiablo2.SDL2/SDL2Sprite.cs

@@ -19,6 +19,19 @@ namespace OpenDiablo2.SDL2_
         public Point Location { get; set; } = new Point();
         public Size FrameSize { get; set; } = new Size();
 
+        private bool darken;
+        public bool Darken
+        {
+            get => darken;
+            set
+            {
+                if (darken == value)
+                    return;
+                darken = value;
+                LoadFrame(frame);
+            }
+        }
+
         private int frame = -1;
         public int Frame
         {
@@ -75,7 +88,6 @@ namespace OpenDiablo2.SDL2_
 
         public Size LocalFrameSize => new Size((int)source.Frames[Frame].Width, (int)source.Frames[Frame].Height);
 
-        // TODO: This is slow. Make fix.
         private void UpdateTextureData()
         {
             if (texture == IntPtr.Zero)
@@ -87,7 +99,6 @@ namespace OpenDiablo2.SDL2_
 
                 Frame = 0;
             }
-
         }
 
         private unsafe void LoadFrame(int index)
@@ -114,8 +125,10 @@ namespace OpenDiablo2.SDL2_
                             continue;
                         }
 
-                        
+                        var color = frame.GetColor(x, (int)(y - frameOffset), CurrentPalette);
-                        data[x + (y * (pitch / 4))] = frame.GetColor(x, (int)(y - frameOffset), CurrentPalette);
+                        if (darken)
+                            color = ((color & 0xFF000000) > 0) ? (color >> 1) & 0xFF7F7F7F | 0xFF000000 : 0;
+                        data[x + (y * (pitch / 4))] = color;
                     }
                 }
             }

OpenDiablo2.Scenes/SelectHeroClass.cs

@@ -54,12 +54,13 @@ namespace OpenDiablo2.Scenes
         private readonly ISceneManager sceneManager;
         private readonly ITextDictionary textDictionary;
 
+        private bool showEntryUi = false;
         private eHero? selectedHero = null;
         private float secondTimer;
         private ISprite backgroundSprite, campfireSprite;
         private IFont headingFont, heroDescFont;
         private ILabel headingLabel, heroClassLabel, heroDesc1Label, heroDesc2Label, heroDesc3Label;
-        private Button exitButton;
+        private Button exitButton, okButton;
         private Dictionary<eHero, HeroRenderInfo> heroRenderInfo = new Dictionary<eHero, HeroRenderInfo>();
 
         public SelectHeroClass(
@@ -211,6 +212,18 @@ namespace OpenDiablo2.Scenes
             exitButton.Text = "EXIT";
             exitButton.Location = new Point(30, 540);
             exitButton.OnActivate = OnExitClicked;
+
+            okButton = createButton(eButtonType.Medium);
+            okButton.Text = "OK";
+            okButton.Location = new Point(630, 540);
+            okButton.OnActivate = OnOkclicked;
+            okButton.Enabled = false;
+
+        }
+
+        private void OnOkclicked()
+        {
+            
         }
 
         private void OnExitClicked()
@@ -221,6 +234,7 @@ namespace OpenDiablo2.Scenes
                 heroRenderInfo[hero].SpecialFrameTime = 0;
                 heroRenderInfo[hero].Stance = eHeroStance.Idle;
             }
+            showEntryUi = false;
 
             sceneManager.ChangeScene("Main Menu");
         }
@@ -240,7 +254,11 @@ namespace OpenDiablo2.Scenes
                 renderWindow.Draw(heroDesc2Label);
                 renderWindow.Draw(heroDesc3Label);
             }
+
             exitButton.Render();
+
+            if (showEntryUi)
+                okButton.Render();
         }
 
         private void RenderHeros()
@@ -313,6 +331,7 @@ namespace OpenDiablo2.Scenes
             }
 
             exitButton.Update();
+            okButton.Update();
         }
 
         private void UpdateHeroSelectionHover(eHero hero, long ms, bool canSelect)
@@ -365,6 +384,7 @@ namespace OpenDiablo2.Scenes
 
             if (mouseHover && mouseInfoProvider.LeftMouseDown)
             {
+                showEntryUi = true;
                 renderInfo.Stance = eHeroStance.Approaching;
                 renderInfo.SpecialFrameTime = 0;