Add draft for body and head following mouse.

Add name tag draft.

common/src/main/java/it/crystalnest/fancy_entity_renderer/api/entity/player/FancyPlayerRenderer.java

@@ -2,7 +2,6 @@
 
 import com.mojang.blaze3d.vertex.PoseStack;
 import it.crystalnest.fancy_entity_renderer.api.entity.player.model.FancyPlayerModel;
-import it.crystalnest.fancy_entity_renderer.api.entity.player.state.FancyPlayerRenderState;
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.renderer.MultiBufferSource;
 import net.minecraft.client.renderer.entity.EntityRendererProvider;
@@ -31,16 +30,10 @@ public class FancyPlayerRenderer extends PlayerRenderer {
 
   public FancyPlayerRenderer(boolean slim) {
     super(RENDER_CONTEXT, slim);
+    entityRenderDispatcher.overrideCameraOrientation(new Quaternionf());
     adultModel = new FancyPlayerModel(slim, false);
     babyModel = new FancyPlayerModel(slim, true);
     model = adultModel;
-    entityRenderDispatcher.overrideCameraOrientation(new Quaternionf());
-  }
-
-  @NotNull
-  @Override
-  public PlayerRenderState createRenderState() {
-    return new FancyPlayerRenderState();
   }
 
   @Override

common/src/main/java/it/crystalnest/fancy_entity_renderer/api/entity/player/FancyPlayerWidget.java

@@ -11,6 +11,9 @@
 import net.minecraft.client.resources.PlayerSkin;
 import net.minecraft.client.sounds.SoundManager;
 import net.minecraft.network.chat.CommonComponents;
+import net.minecraft.network.chat.Component;
+import net.minecraft.world.entity.EntityType;
+import net.minecraft.world.phys.Vec3;
 import org.jetbrains.annotations.NotNull;
 
 public class FancyPlayerWidget extends AbstractWidget {
@@ -29,19 +32,7 @@ public FancyPlayerWidget(int x, int y, int width, int height) {
 
   @Override
   protected void renderWidget(GuiGraphics gfx, int mouseX, int mouseY, float partialTick) {
-//    if (this.bodyFollowsMouse) {
-    float c = (float) (getX() + (getX() + getWidth())) / 2.0F;
-    float g = (float) (getY() + (getY() + getHeight())) / 2.0F;
-    float h = (float) Math.atan(((c - mouseX) / 40.0F));
-    float i = (float) Math.atan(((g - mouseY) / 40.0F));
-    // Must rotate around Y axis when mouse moves along X axis and vice versa.
-    renderState.bodyRot.setX((float) Math.toRadians(-i * 20.0F));
-    renderState.bodyRot.setY((float) -Math.toRadians(h * 20.0F));
-//    } else {
-//      renderer.bodyRot.setX((float) Math.toRadians(this.stringToFloat(this.bodyXRot)));
-//      renderer.bodyRot.setY((float) Math.toRadians(this.stringToFloat(this.bodyYRot)));
-//    }
-
+    updateRenderState(mouseX, mouseY);
     gfx.pose().pushPose();
     gfx.pose().translate(getX() + getWidth() / 2F, getY() + getHeight(), 100);
     float f = getHeight() / 2.125F;
@@ -56,6 +47,32 @@ protected void renderWidget(GuiGraphics gfx, int mouseX, int mouseY, float parti
     gfx.pose().popPose();
   }
 
+  public void updateRenderState(int mouseX, int mouseY) {
+    if (renderState.bodyFollowsMouse || renderState.headFollowsMouse) {
+      // Must rotate around Y axis when mouse moves along X axis and vice versa.
+      double yRot = -Math.atan(((getX() + (getX() + getWidth())) / 2.0F - mouseX) / 40) * 20;
+      double xRot = -Math.atan(((getY() + (getY() + getHeight())) / 2.0F - mouseY) / 40) * 20;
+      // TODO: The rotations above are calculated based on the size of the bounding rectangle, meaning the adult head Y center is lower than it should be, and both baby body and head Y centers are higher than they should be.
+      //       Rather than on the bounding rectangle, the rotations should be calculated separately for head and body depending on their actual sizes and positions (what happens with Poses other than Pose.STANDING?).
+      if (renderState.bodyFollowsMouse) {
+        renderState.bodyRot.setXDeg(xRot);
+        renderState.bodyRot.setYDeg(yRot);
+        renderState.bodyRot.setZ(0);
+      } else {
+//      renderState.bodyRot.setXDeg(RotationDegreesSetByTheUser);
+//      renderState.bodyRot.setYDeg(RotationDegreesSetByTheUser);
+//      renderState.bodyRot.setZDeg(RotationDegreesSetByTheUser);
+      }
+      if (renderState.headFollowsMouse) {
+        renderState.headRot.setXDeg(xRot);
+        renderState.headRot.setYDeg(yRot);
+        renderState.headRot.setZ(0);
+      } else {
+//      renderState.headRot.setXDeg(RotationDegreesSetByTheUser);
+//      renderState.headRot.setYDeg(RotationDegreesSetByTheUser);
+//      renderState.headRot.setZDeg(RotationDegreesSetByTheUser);
+      }
+    }
 
 //  public void updateRenderState(@NotNull PlayerRenderState state) {
 //    // TODO: Implement copying the local player (name, texture, showCape/showHat/show..., cape texture)

common/src/main/java/it/crystalnest/fancy_entity_renderer/api/entity/player/state/FancyPlayerRenderState.java

@@ -19,6 +19,10 @@ public class FancyPlayerRenderState extends PlayerRenderState {
 
   public final Rotation bodyRot = new Rotation();
 
+  public boolean bodyFollowsMouse = false;
+
+  public boolean headFollowsMouse = false;
+
   public FancyPlayerRenderState() {
     isUpsideDown = true;
   }