minecraft-src/net/minecraft/client/renderer/entity/PandaRenderer.java

package net.minecraft.client.renderer.entity;

import com.google.common.collect.Maps;
import com.mojang.blaze3d.vertex.PoseStack;
import com.mojang.math.Axis;
import java.util.Map;
import net.fabricmc.api.EnvType;
import net.fabricmc.api.Environment;
import net.minecraft.client.model.PandaModel;
import net.minecraft.client.model.geom.ModelLayers;
import net.minecraft.client.renderer.entity.layers.PandaHoldsItemLayer;
import net.minecraft.client.renderer.entity.state.HoldingEntityRenderState;
import net.minecraft.client.renderer.entity.state.PandaRenderState;
import net.minecraft.resources.ResourceLocation;
import net.minecraft.util.Mth;
import net.minecraft.world.entity.animal.Panda;

@Environment(EnvType.CLIENT)
public class PandaRenderer extends AgeableMobRenderer<Panda, PandaRenderState, PandaModel> {
	private static final Map<Panda.Gene, ResourceLocation> TEXTURES = Maps.newEnumMap(
		Map.of(
			Panda.Gene.NORMAL,
			ResourceLocation.withDefaultNamespace("textures/entity/panda/panda.png"),
			Panda.Gene.LAZY,
			ResourceLocation.withDefaultNamespace("textures/entity/panda/lazy_panda.png"),
			Panda.Gene.WORRIED,
			ResourceLocation.withDefaultNamespace("textures/entity/panda/worried_panda.png"),
			Panda.Gene.PLAYFUL,
			ResourceLocation.withDefaultNamespace("textures/entity/panda/playful_panda.png"),
			Panda.Gene.BROWN,
			ResourceLocation.withDefaultNamespace("textures/entity/panda/brown_panda.png"),
			Panda.Gene.WEAK,
			ResourceLocation.withDefaultNamespace("textures/entity/panda/weak_panda.png"),
			Panda.Gene.AGGRESSIVE,
			ResourceLocation.withDefaultNamespace("textures/entity/panda/aggressive_panda.png")
		)
	);

	public PandaRenderer(EntityRendererProvider.Context context) {
		super(context, new PandaModel(context.bakeLayer(ModelLayers.PANDA)), new PandaModel(context.bakeLayer(ModelLayers.PANDA_BABY)), 0.9F);
		this.addLayer(new PandaHoldsItemLayer(this));
	}

	public ResourceLocation getTextureLocation(PandaRenderState renderState) {
		return (ResourceLocation)TEXTURES.getOrDefault(renderState.variant, (ResourceLocation)TEXTURES.get(Panda.Gene.NORMAL));
	}

	public PandaRenderState createRenderState() {
		return new PandaRenderState();
	}

	public void extractRenderState(Panda entity, PandaRenderState reusedState, float partialTick) {
		super.extractRenderState(entity, reusedState, partialTick);
		HoldingEntityRenderState.extractHoldingEntityRenderState(entity, reusedState, this.itemModelResolver);
		reusedState.variant = entity.getVariant();
		reusedState.isUnhappy = entity.getUnhappyCounter() > 0;
		reusedState.isSneezing = entity.isSneezing();
		reusedState.sneezeTime = entity.getSneezeCounter();
		reusedState.isEating = entity.isEating();
		reusedState.isScared = entity.isScared();
		reusedState.isSitting = entity.isSitting();
		reusedState.sitAmount = entity.getSitAmount(partialTick);
		reusedState.lieOnBackAmount = entity.getLieOnBackAmount(partialTick);
		reusedState.rollAmount = entity.isBaby() ? 0.0F : entity.getRollAmount(partialTick);
		reusedState.rollTime = entity.rollCounter > 0 ? entity.rollCounter + partialTick : 0.0F;
	}

	protected void setupRotations(PandaRenderState renderState, PoseStack poseStack, float bodyRot, float scale) {
		super.setupRotations(renderState, poseStack, bodyRot, scale);
		if (renderState.rollTime > 0.0F) {
			float f = Mth.frac(renderState.rollTime);
			int i = Mth.floor(renderState.rollTime);
			int j = i + 1;
			float g = 7.0F;
			float h = renderState.isBaby ? 0.3F : 0.8F;
			if (i < 8.0F) {
				float k = 90.0F * i / 7.0F;
				float l = 90.0F * j / 7.0F;
				float m = this.getAngle(k, l, j, f, 8.0F);
				poseStack.translate(0.0F, (h + 0.2F) * (m / 90.0F), 0.0F);
				poseStack.mulPose(Axis.XP.rotationDegrees(-m));
			} else if (i < 16.0F) {
				float k = (i - 8.0F) / 7.0F;
				float l = 90.0F + 90.0F * k;
				float n = 90.0F + 90.0F * (j - 8.0F) / 7.0F;
				float m = this.getAngle(l, n, j, f, 16.0F);
				poseStack.translate(0.0F, h + 0.2F + (h - 0.2F) * (m - 90.0F) / 90.0F, 0.0F);
				poseStack.mulPose(Axis.XP.rotationDegrees(-m));
			} else if (i < 24.0F) {
				float k = (i - 16.0F) / 7.0F;
				float l = 180.0F + 90.0F * k;
				float n = 180.0F + 90.0F * (j - 16.0F) / 7.0F;
				float m = this.getAngle(l, n, j, f, 24.0F);
				poseStack.translate(0.0F, h + h * (270.0F - m) / 90.0F, 0.0F);
				poseStack.mulPose(Axis.XP.rotationDegrees(-m));
			} else if (i < 32) {
				float k = (i - 24.0F) / 7.0F;
				float l = 270.0F + 90.0F * k;
				float n = 270.0F + 90.0F * (j - 24.0F) / 7.0F;
				float m = this.getAngle(l, n, j, f, 32.0F);
				poseStack.translate(0.0F, h * ((360.0F - m) / 90.0F), 0.0F);
				poseStack.mulPose(Axis.XP.rotationDegrees(-m));
			}
		}

		float f = renderState.sitAmount;
		if (f > 0.0F) {
			poseStack.translate(0.0F, 0.8F * f, 0.0F);
			poseStack.mulPose(Axis.XP.rotationDegrees(Mth.lerp(f, renderState.xRot, renderState.xRot + 90.0F)));
			poseStack.translate(0.0F, -1.0F * f, 0.0F);
			if (renderState.isScared) {
				float o = (float)(Math.cos(renderState.ageInTicks * 1.25F) * Math.PI * 0.05F);
				poseStack.mulPose(Axis.YP.rotationDegrees(o));
				if (renderState.isBaby) {
					poseStack.translate(0.0F, 0.8F, 0.55F);
				}
			}
		}

		float o = renderState.lieOnBackAmount;
		if (o > 0.0F) {
			float p = renderState.isBaby ? 0.5F : 1.3F;
			poseStack.translate(0.0F, p * o, 0.0F);
			poseStack.mulPose(Axis.XP.rotationDegrees(Mth.lerp(o, renderState.xRot, renderState.xRot + 180.0F)));
		}
	}

	private float getAngle(float currentAngle, float nextAngle, int nextRollCounter, float partialTick, float rollEndCount) {
		return nextRollCounter < rollEndCount ? Mth.lerp(partialTick, currentAngle, nextAngle) : currentAngle;
	}
}