make bg animation toggleable

src/main/java/org/polyfrost/chatting/mixin/GuiNewChatMixin.java

@@ -30,6 +30,8 @@
 import java.awt.image.BufferedImage;
 import java.util.List;
 
+import static net.minecraft.client.gui.GuiNewChat.calculateChatboxHeight;
+
 @Mixin(value = GuiNewChat.class, priority = 990)
 public abstract class GuiNewChatMixin extends Gui implements GuiNewChatHook {
     @Unique
@@ -84,12 +86,48 @@ private IChatComponent handleAddDrawnLine(IChatComponent iChatComponent) {
 
      */
 
+    @Unique
+    private boolean lastOpen, closing;
+
+    @Unique
+    private long time;
+
+    @Inject(method = "drawChat", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/renderer/GlStateManager;popMatrix()V"))
+    private void drawClosing(int updateCounter, CallbackInfo ci) {
+        ChattingConfig config = ChattingConfig.INSTANCE;
+
+        if (closing) {
+            int height = (config.getCustomChatHeight() ? Chatting.INSTANCE.getChatHeight(getChatOpen()) : calculateChatboxHeight(this.mc.gameSettings.chatHeightFocused));
+            for (int m = 0; m < this.drawnChatLines.size() && m < height / 9; ++m) {
+                ChatLine chatLine = this.drawnChatLines.get(m);
+                if (chatLine != null) {
+                    int n = updateCounter - chatLine.getUpdatedCounter() + 200 - (int) (config.getFadeTime() * 20);
+                    if (n >= 200 && !getChatOpen()) {
+                        int q = m * 9;
+                        String string = chatLine.getChatComponent().getFormattedText();
+                        GlStateManager.enableBlend();
+                        ModCompatHooks.redirectDrawString(string, 0, -q - 8, 16777215 + (255 << 24), chatLine, false);
+                        GlStateManager.disableAlpha();
+                        GlStateManager.disableBlend();
+                    }
+                }
+            }
+        }
+    }
+
     @Inject(method = "drawChat", at = @At("HEAD"))
     private void checkScreenshotKeybind(int j2, CallbackInfo ci) {
         if (Chatting.INSTANCE.getKeybind().isPressed()) {
             Chatting.INSTANCE.setDoTheThing(true);
         }
         chatting$chatCheck = false;
+        if (lastOpen != getChatOpen()) {
+            if (lastOpen) time = Minecraft.getSystemTime();
+            lastOpen = getChatOpen();
+        }
+        ChattingConfig config = ChattingConfig.INSTANCE;
+        long duration = config.getSmoothBG() ? (long) config.getBgDuration() : 0;
+        closing = (Minecraft.getSystemTime() - time + 50L <= duration);
     }
 
     @Unique
@@ -103,7 +141,7 @@ private int setUpdateCounterWhenYes(int updateCounter) {
     @ModifyVariable(method = "drawChat", at = @At("STORE"), index = 2)
     private int setChatLimitWhenYes(int linesToDraw) {
         return Chatting.INSTANCE.getDoTheThing()
-                ? GuiNewChat.calculateChatboxHeight(mc.gameSettings.chatHeightFocused) / 9
+                ? calculateChatboxHeight(mc.gameSettings.chatHeightFocused) / 9
                 : linesToDraw;
     }
 
@@ -127,7 +165,7 @@ private void startScissor(int updateCounter, CallbackInfo ci) {
         ChatWindow hud = config.getChatWindow();
         int mcScale = new ScaledResolution(mc).getScaleFactor();
         GL11.glEnable(GL11.GL_SCISSOR_TEST);
-        int height = (int) hud.getHeightAnimation().get();
+        int height = (int) hud.getAnimationHeight();
         GL11.glScissor((int) hud.position.getX() * mcScale, mc.displayHeight - (int) hud.position.getBottomY() * mcScale, (int) (hud.position.getWidth() + (getChatOpen() ? 20 : 0) * hud.getScale()) * mcScale, height * mcScale);
     }
 
@@ -229,7 +267,7 @@ private double modifyYeah(double value) {
         if (chatting$textOpacity == Integer.MIN_VALUE) {
             chatting$textOpacity = 0;
         }
-        return value;
+        return closing ? 255 : value;
     }
     /*/
     @Inject(method = "drawChat", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/renderer/GlStateManager;scale(FFF)V"))

src/main/kotlin/org/polyfrost/chatting/chat/ChatWindow.kt

@@ -9,8 +9,7 @@ import cc.polyfrost.oneconfig.libs.universal.UMatrixStack
 import cc.polyfrost.oneconfig.utils.dsl.*
 import net.minecraft.client.gui.*
 import net.minecraft.util.ChatComponentText
-import org.polyfrost.chatting.config.ChattingConfig.messageSpeed
-import org.polyfrost.chatting.config.ChattingConfig.showChatHeads
+import org.polyfrost.chatting.config.ChattingConfig
 import org.polyfrost.chatting.utils.EaseOutQuart
 import org.polyfrost.chatting.utils.ModCompatHooks
 
@@ -34,6 +33,9 @@ class ChatWindow : BasicHud(true) {
     @Exclude
     var height = 0
 
+    @Exclude
+    var animationHeight = 0f
+
     override fun draw(matrices: UMatrixStack?, x: Float, y: Float, scale: Float, example: Boolean) {
         if (!example) return
         nanoVG(true){
@@ -51,14 +53,25 @@ class ChatWindow : BasicHud(true) {
 
     fun drawBG() {
         val currentWidth = widthAnimation.get()
-        val currentHeight = heightAnimation.get()
+        animationHeight = heightAnimation.get()
         val widthEnd = position.width + (if (mc.ingameGUI.chatGUI.chatOpen) 20 else 0) * scale
         val heightEnd = if (height == 0) 0f else (height + paddingY * 2f) * scale
-        widthAnimation = EaseOutQuart((1.0f - messageSpeed) * 1000f, currentWidth, widthEnd, false)
-        heightAnimation = EaseOutQuart((1.0f - messageSpeed) * 1000f, currentHeight, heightEnd, false)
-        if (currentHeight <= 0.3f || !background || HudCore.editing) return
+        val duration = ChattingConfig.bgDuration
+        if (widthEnd != widthAnimation.end) {
+            widthAnimation = if (ChattingConfig.smoothBG)
+                EaseOutQuart(duration, currentWidth, widthEnd, false)
+            else
+                DummyAnimation(widthEnd)
+        }
+        if (heightEnd != heightAnimation.end) {
+            heightAnimation = if (ChattingConfig.smoothBG)
+                EaseOutQuart(duration, animationHeight, heightEnd, false)
+            else
+                DummyAnimation(heightEnd)
+        }
+        if (animationHeight <= 0.3f || !background || HudCore.editing) return
         nanoVG(true) {
-            drawBackground(position.x, position.bottomY - currentHeight, currentWidth, currentHeight, scale)
+            drawBackground(position.x, position.bottomY - animationHeight, currentWidth, animationHeight, scale)
         }
     }
 

src/main/kotlin/org/polyfrost/chatting/config/ChattingConfig.kt

@@ -89,6 +89,21 @@ object ChattingConfig : Config(
     )
     var messageSpeed = 0.5f
 
+    @Switch(
+        name = "Smooth Chat Background",
+        category = "Animations", subcategory = "Background",
+        description = "Smoothly animate chat background."
+    )
+    var smoothBG = true
+
+    @Slider(
+        name = "Background Animation Duration",
+        category = "Animations", subcategory = "Background",
+        min = 50f, max = 1000f,
+        description = "The speed at which chat background animate."
+    )
+    var bgDuration = 400f
+
     @Switch(
         name = "Smooth Chat Scrolling",
         category = "Animations", subcategory = "Scrolling",
@@ -319,6 +334,7 @@ object ChattingConfig : Config(
         addDependency("unfocusedHeight", "customChatHeight")
         addDependency("scrollingSpeed", "smoothScrolling")
         addDependency("messageSpeed", "smoothChat")
+        addDependency("bgDuration", "smoothBG")
         addDependency("smoothChat", "BetterChat Smooth Chat") {
             !ModCompatHooks.betterChatSmoothMessages
         }