Add interaction indicators to the tribe selection gui

src/main/java/com/minelittlepony/unicopia/client/gui/TribeSelectionScreen.java

@@ -14,6 +14,7 @@ import com.minelittlepony.unicopia.network.Channel;
 import com.minelittlepony.unicopia.network.MsgRequestSpeciesChange;
 
 import net.minecraft.client.gui.DrawContext;
+import net.minecraft.sound.SoundEvents;
 import net.minecraft.text.Text;
 import net.minecraft.util.Formatting;
 import net.minecraft.util.Identifier;
@@ -110,7 +111,7 @@ public class TribeSelectionScreen extends GameGui implements HidesHud {
     private void updateScolling() {
         final int itemWidth = 70 + 10;
         int x = (width - itemWidth) / 2;
-        float diff = MathHelper.lerp(client.getTickDelta(), prevScrollPosition, scrollPosition) / 8F;
+        float diff = MathHelper.lerp(client.getTickDelta(), prevScrollPosition, scrollPosition) / 4F;
 
         for (int i = 0; i < options.size(); i++) {
             var option = options.get(i);
@@ -124,6 +125,21 @@ public class TribeSelectionScreen extends GameGui implements HidesHud {
         updateScolling();
         renderBackground(context);
         super.render(context, mouseX, mouseY, delta);
+
+        if (!options.isEmpty()) {
+            var element = options.get(0);
+
+            float diff = (targetScroll - MathHelper.lerp(client.getTickDelta(), prevScrollPosition, scrollPosition)) * 7;
+            context.drawTexture(TEXTURE, (width / 2) + 40 + (scrollPosition < targetScroll ? (int)diff : 0), element.getY() - 20, 10, 165, 153, 30, 85, 312, 312);
+            context.drawTexture(TEXTURE, (width / 2) - 80 + (scrollPosition > targetScroll ? (int)diff : 0), element.getY() - 20, 10, 195, 153, 30, 85, 312, 312);
+            if (element.getBounds().left < 0) {
+                context.drawTexture(TEXTURE, 20, element.getY() - 10, 10, 188, 235, 24, 60, 312, 312);
+            }
+            element = options.get(options.size() - 1);
+            if (element.getBounds().right() > width) {
+                context.drawTexture(TEXTURE, width - 50, element.getY() - 10, 10, 164, 235, 24, 60, 312, 312);
+            }
+        }
     }
 
     @Override
@@ -151,11 +167,16 @@ public class TribeSelectionScreen extends GameGui implements HidesHud {
     }
 
     private void scroll(int target, boolean animate) {
+        if (target == SELECTION) {
+            return;
+        }
         SELECTION = target;
-        targetScroll = SELECTION * 8;
+        targetScroll = SELECTION * 4;
         if (!animate) {
             scrollPosition = targetScroll;
             prevScrollPosition = scrollPosition;
+        } else {
+            playSound(SoundEvents.UI_BUTTON_CLICK);
         }
     }