Add partial 1.12.2 implementations

Author: RappyTV

game-runner/src/v1_12_2/java/com/rappytv/nametagresizer/v1_12_2/mixins/MixinEntityRenderer.java

@@ -0,0 +1,31 @@
+package com.rappytv.nametagresizer.v1_12_2.mixins;
+
+import com.rappytv.nametagresizer.event.NametagSizeEvent;
+import net.labymod.api.Laby;
+import net.minecraft.client.renderer.EntityRenderer;
+import net.minecraft.client.renderer.GlStateManager;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Unique;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+@Mixin(EntityRenderer.class)
+public class MixinEntityRenderer {
+
+  @Unique
+  private static boolean sandbox$isPlayer;
+
+  // TODO: Fix isPlayer boolean
+//  @Inject(method = "renderNameTag", at = @At("HEAD"))
+//  public void renderNameTag(T entity, Component component, PoseStack stack,
+//      MultiBufferSource buffer, int light, CallbackInfo ci) {
+//    sandbox$isPlayer = entity instanceof Player;
+//  }
+
+  @Redirect(method = "drawNameplate", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/renderer/GlStateManager;scale(FFF)V"))
+  private static void scale(float x, float y, float z) {
+    NametagSizeEvent event = new NametagSizeEvent(sandbox$isPlayer, x, y, z);
+    Laby.fireEvent(event);
+    GlStateManager.scale(event.getX(), event.getY(), event.getZ());
+  }
+}