fix: Re-implement head_model with the new model format

1 files changed, 51 insertions, 0 deletions

diff --git a/src/texturePacks/java/moe/nea/firmament/mixins/custommodels/ReplaceHeadModel.java b/src/texturePacks/java/moe/nea/firmament/mixins/custommodels/ReplaceHeadModel.java
new file mode 100644
index 0000000..8381227
--- /dev/null
+++ b/src/texturePacks/java/moe/nea/firmament/mixins/custommodels/ReplaceHeadModel.java
@@ -0,0 +1,51 @@
+package moe.nea.firmament.mixins.custommodels;
+
+import moe.nea.firmament.features.texturepack.HeadModelChooser;
+import net.minecraft.client.item.ItemModelManager;
+import net.minecraft.client.render.entity.LivingEntityRenderer;
+import net.minecraft.client.render.entity.model.EntityModel;
+import net.minecraft.client.render.entity.state.LivingEntityRenderState;
+import net.minecraft.client.render.item.ItemRenderState;
+import net.minecraft.entity.EquipmentSlot;
+import net.minecraft.entity.LivingEntity;
+import net.minecraft.item.ModelTransformationMode;
+import org.spongepowered.asm.mixin.Final;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.Unique;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+@Mixin(LivingEntityRenderer.class)
+public class ReplaceHeadModel<T extends LivingEntity, S extends LivingEntityRenderState, M extends EntityModel<? super S>> {
+	@Shadow
+	@Final
+	protected ItemModelManager itemModelResolver;
+
+	@Unique
+	private ItemRenderState tempRenderState = new ItemRenderState();
+
+	@Inject(
+		method = "updateRenderState(Lnet/minecraft/entity/LivingEntity;Lnet/minecraft/client/render/entity/state/LivingEntityRenderState;F)V",
+		at = @At("TAIL")
+	)
+	private void replaceHeadModel(
+		T livingEntity, S livingEntityRenderState, float f, CallbackInfo ci
+	) {
+		var headItemStack = livingEntity.getEquippedStack(EquipmentSlot.HEAD);
+
+		HeadModelChooser.INSTANCE.getIS_CHOOSING_HEAD_MODEL().set(true);
+		tempRenderState.clear();
+		this.itemModelResolver.updateForLivingEntity(tempRenderState, headItemStack, ModelTransformationMode.HEAD, false, livingEntity);
+		HeadModelChooser.INSTANCE.getIS_CHOOSING_HEAD_MODEL().set(false);
+
+		if (HeadModelChooser.HasExplicitHeadModelMarker.cast(tempRenderState)
+			.isExplicitHeadModel_Firmament()) {
+			livingEntityRenderState.wearingSkullType = null;
+			var temp = livingEntityRenderState.headItemRenderState;
+			livingEntityRenderState.headItemRenderState = tempRenderState;
+			tempRenderState = temp;
+		}
+	}
+}