Code/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.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;
import net.minecraftforge.api.distmarker.Dist;
import net.minecraftforge.api.distmarker.OnlyIn;

@OnlyIn(Dist.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 p_174334_) {
        super(p_174334_, new PandaModel(p_174334_.bakeLayer(ModelLayers.PANDA)), new PandaModel(p_174334_.bakeLayer(ModelLayers.PANDA_BABY)), 0.9F);
        this.addLayer(new PandaHoldsItemLayer(this));
    }

    public ResourceLocation getTextureLocation(PandaRenderState p_365317_) {
        return TEXTURES.getOrDefault(p_365317_.variant, TEXTURES.get(Panda.Gene.NORMAL));
    }

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

    public void extractRenderState(Panda p_365442_, PandaRenderState p_365611_, float p_368259_) {
        super.extractRenderState(p_365442_, p_365611_, p_368259_);
        HoldingEntityRenderState.extractHoldingEntityRenderState(p_365442_, p_365611_, this.itemModelResolver);
        p_365611_.variant = p_365442_.getVariant();
        p_365611_.isUnhappy = p_365442_.getUnhappyCounter() > 0;
        p_365611_.isSneezing = p_365442_.isSneezing();
        p_365611_.sneezeTime = p_365442_.getSneezeCounter();
        p_365611_.isEating = p_365442_.isEating();
        p_365611_.isScared = p_365442_.isScared();
        p_365611_.isSitting = p_365442_.isSitting();
        p_365611_.sitAmount = p_365442_.getSitAmount(p_368259_);
        p_365611_.lieOnBackAmount = p_365442_.getLieOnBackAmount(p_368259_);
        p_365611_.rollAmount = p_365442_.isBaby() ? 0.0F : p_365442_.getRollAmount(p_368259_);
        p_365611_.rollTime = p_365442_.rollCounter > 0 ? p_365442_.rollCounter + p_368259_ : 0.0F;
    }

    protected void setupRotations(PandaRenderState p_367375_, PoseStack p_115642_, float p_115643_, float p_115644_) {
        super.setupRotations(p_367375_, p_115642_, p_115643_, p_115644_);
        if (p_367375_.rollTime > 0.0F) {
            float f = Mth.frac(p_367375_.rollTime);
            int i = Mth.floor(p_367375_.rollTime);
            int j = i + 1;
            float f1 = 7.0F;
            float f2 = p_367375_.isBaby ? 0.3F : 0.8F;
            if (i < 8.0F) {
                float f4 = 90.0F * i / 7.0F;
                float f5 = 90.0F * j / 7.0F;
                float f3 = this.getAngle(f4, f5, j, f, 8.0F);
                p_115642_.translate(0.0F, (f2 + 0.2F) * (f3 / 90.0F), 0.0F);
                p_115642_.mulPose(Axis.XP.rotationDegrees(-f3));
            } else if (i < 16.0F) {
                float f14 = (i - 8.0F) / 7.0F;
                float f17 = 90.0F + 90.0F * f14;
                float f6 = 90.0F + 90.0F * (j - 8.0F) / 7.0F;
                float f11 = this.getAngle(f17, f6, j, f, 16.0F);
                p_115642_.translate(0.0F, f2 + 0.2F + (f2 - 0.2F) * (f11 - 90.0F) / 90.0F, 0.0F);
                p_115642_.mulPose(Axis.XP.rotationDegrees(-f11));
            } else if (i < 24.0F) {
                float f15 = (i - 16.0F) / 7.0F;
                float f18 = 180.0F + 90.0F * f15;
                float f20 = 180.0F + 90.0F * (j - 16.0F) / 7.0F;
                float f12 = this.getAngle(f18, f20, j, f, 24.0F);
                p_115642_.translate(0.0F, f2 + f2 * (270.0F - f12) / 90.0F, 0.0F);
                p_115642_.mulPose(Axis.XP.rotationDegrees(-f12));
            } else if (i < 32) {
                float f16 = (i - 24.0F) / 7.0F;
                float f19 = 270.0F + 90.0F * f16;
                float f21 = 270.0F + 90.0F * (j - 24.0F) / 7.0F;
                float f13 = this.getAngle(f19, f21, j, f, 32.0F);
                p_115642_.translate(0.0F, f2 * ((360.0F - f13) / 90.0F), 0.0F);
                p_115642_.mulPose(Axis.XP.rotationDegrees(-f13));
            }
        }

        float f7 = p_367375_.sitAmount;
        if (f7 > 0.0F) {
            p_115642_.translate(0.0F, 0.8F * f7, 0.0F);
            p_115642_.mulPose(Axis.XP.rotationDegrees(Mth.lerp(f7, p_367375_.xRot, p_367375_.xRot + 90.0F)));
            p_115642_.translate(0.0F, -1.0F * f7, 0.0F);
            if (p_367375_.isScared) {
                float f8 = (float)(Math.cos(p_367375_.ageInTicks * 1.25F) * Math.PI * 0.05F);
                p_115642_.mulPose(Axis.YP.rotationDegrees(f8));
                if (p_367375_.isBaby) {
                    p_115642_.translate(0.0F, 0.8F, 0.55F);
                }
            }
        }

        float f9 = p_367375_.lieOnBackAmount;
        if (f9 > 0.0F) {
            float f10 = p_367375_.isBaby ? 0.5F : 1.3F;
            p_115642_.translate(0.0F, f10 * f9, 0.0F);
            p_115642_.mulPose(Axis.XP.rotationDegrees(Mth.lerp(f9, p_367375_.xRot, p_367375_.xRot + 180.0F)));
        }
    }

    private float getAngle(float p_115625_, float p_115626_, int p_115627_, float p_115628_, float p_115629_) {
        return p_115627_ < p_115629_ ? Mth.lerp(p_115628_, p_115625_, p_115626_) : p_115625_;
    }
}