Code/net/minecraft/client/renderer/entity/GuardianRenderer.java

package net.minecraft.client.renderer.entity;

import com.mojang.blaze3d.vertex.PoseStack;
import com.mojang.blaze3d.vertex.VertexConsumer;
import com.mojang.math.Axis;
import javax.annotation.Nullable;
import net.minecraft.client.Minecraft;
import net.minecraft.client.model.GuardianModel;
import net.minecraft.client.model.geom.ModelLayerLocation;
import net.minecraft.client.model.geom.ModelLayers;
import net.minecraft.client.renderer.MultiBufferSource;
import net.minecraft.client.renderer.RenderType;
import net.minecraft.client.renderer.culling.Frustum;
import net.minecraft.client.renderer.entity.state.GuardianRenderState;
import net.minecraft.client.renderer.texture.OverlayTexture;
import net.minecraft.resources.ResourceLocation;
import net.minecraft.util.Mth;
import net.minecraft.world.entity.Entity;
import net.minecraft.world.entity.LivingEntity;
import net.minecraft.world.entity.monster.Guardian;
import net.minecraft.world.phys.AABB;
import net.minecraft.world.phys.Vec3;
import net.minecraftforge.api.distmarker.Dist;
import net.minecraftforge.api.distmarker.OnlyIn;

@OnlyIn(Dist.CLIENT)
public class GuardianRenderer extends MobRenderer<Guardian, GuardianRenderState, GuardianModel> {
    private static final ResourceLocation GUARDIAN_LOCATION = ResourceLocation.withDefaultNamespace("textures/entity/guardian.png");
    private static final ResourceLocation GUARDIAN_BEAM_LOCATION = ResourceLocation.withDefaultNamespace("textures/entity/guardian_beam.png");
    private static final RenderType BEAM_RENDER_TYPE = RenderType.entityCutoutNoCull(GUARDIAN_BEAM_LOCATION);

    public GuardianRenderer(EntityRendererProvider.Context p_174159_) {
        this(p_174159_, 0.5F, ModelLayers.GUARDIAN);
    }

    protected GuardianRenderer(EntityRendererProvider.Context p_174161_, float p_174162_, ModelLayerLocation p_174163_) {
        super(p_174161_, new GuardianModel(p_174161_.bakeLayer(p_174163_)), p_174162_);
    }

    public boolean shouldRender(Guardian p_114836_, Frustum p_114837_, double p_114838_, double p_114839_, double p_114840_) {
        if (super.shouldRender(p_114836_, p_114837_, p_114838_, p_114839_, p_114840_)) {
            return true;
        } else {
            if (p_114836_.hasActiveAttackTarget()) {
                LivingEntity livingentity = p_114836_.getActiveAttackTarget();
                if (livingentity != null) {
                    Vec3 vec3 = this.getPosition(livingentity, livingentity.getBbHeight() * 0.5, 1.0F);
                    Vec3 vec31 = this.getPosition(p_114836_, p_114836_.getEyeHeight(), 1.0F);
                    return p_114837_.isVisible(new AABB(vec31.x, vec31.y, vec31.z, vec3.x, vec3.y, vec3.z));
                }
            }

            return false;
        }
    }

    private Vec3 getPosition(LivingEntity p_114803_, double p_114804_, float p_114805_) {
        double d0 = Mth.lerp(p_114805_, p_114803_.xOld, p_114803_.getX());
        double d1 = Mth.lerp(p_114805_, p_114803_.yOld, p_114803_.getY()) + p_114804_;
        double d2 = Mth.lerp(p_114805_, p_114803_.zOld, p_114803_.getZ());
        return new Vec3(d0, d1, d2);
    }

    public void render(GuardianRenderState p_369518_, PoseStack p_114793_, MultiBufferSource p_114794_, int p_114795_) {
        super.render(p_369518_, p_114793_, p_114794_, p_114795_);
        Vec3 vec3 = p_369518_.attackTargetPosition;
        if (vec3 != null) {
            float f = p_369518_.attackTime * 0.5F % 1.0F;
            p_114793_.pushPose();
            p_114793_.translate(0.0F, p_369518_.eyeHeight, 0.0F);
            renderBeam(p_114793_, p_114794_.getBuffer(BEAM_RENDER_TYPE), vec3.subtract(p_369518_.eyePosition), p_369518_.attackTime, p_369518_.attackScale, f);
            p_114793_.popPose();
        }
    }

    private static void renderBeam(PoseStack p_362984_, VertexConsumer p_361642_, Vec3 p_364612_, float p_368702_, float p_364900_, float p_363883_) {
        float f = (float)(p_364612_.length() + 1.0);
        p_364612_ = p_364612_.normalize();
        float f1 = (float)Math.acos(p_364612_.y);
        float f2 = (float) (Math.PI / 2) - (float)Math.atan2(p_364612_.z, p_364612_.x);
        p_362984_.mulPose(Axis.YP.rotationDegrees(f2 * (180.0F / (float)Math.PI)));
        p_362984_.mulPose(Axis.XP.rotationDegrees(f1 * (180.0F / (float)Math.PI)));
        float f3 = p_368702_ * 0.05F * -1.5F;
        float f4 = p_364900_ * p_364900_;
        int i = 64 + (int)(f4 * 191.0F);
        int j = 32 + (int)(f4 * 191.0F);
        int k = 128 - (int)(f4 * 64.0F);
        float f5 = 0.2F;
        float f6 = 0.282F;
        float f7 = Mth.cos(f3 + (float) (Math.PI * 3.0 / 4.0)) * 0.282F;
        float f8 = Mth.sin(f3 + (float) (Math.PI * 3.0 / 4.0)) * 0.282F;
        float f9 = Mth.cos(f3 + (float) (Math.PI / 4)) * 0.282F;
        float f10 = Mth.sin(f3 + (float) (Math.PI / 4)) * 0.282F;
        float f11 = Mth.cos(f3 + ((float) Math.PI * 5.0F / 4.0F)) * 0.282F;
        float f12 = Mth.sin(f3 + ((float) Math.PI * 5.0F / 4.0F)) * 0.282F;
        float f13 = Mth.cos(f3 + ((float) Math.PI * 7.0F / 4.0F)) * 0.282F;
        float f14 = Mth.sin(f3 + ((float) Math.PI * 7.0F / 4.0F)) * 0.282F;
        float f15 = Mth.cos(f3 + (float) Math.PI) * 0.2F;
        float f16 = Mth.sin(f3 + (float) Math.PI) * 0.2F;
        float f17 = Mth.cos(f3 + 0.0F) * 0.2F;
        float f18 = Mth.sin(f3 + 0.0F) * 0.2F;
        float f19 = Mth.cos(f3 + (float) (Math.PI / 2)) * 0.2F;
        float f20 = Mth.sin(f3 + (float) (Math.PI / 2)) * 0.2F;
        float f21 = Mth.cos(f3 + (float) (Math.PI * 3.0 / 2.0)) * 0.2F;
        float f22 = Mth.sin(f3 + (float) (Math.PI * 3.0 / 2.0)) * 0.2F;
        float f23 = 0.0F;
        float f24 = 0.4999F;
        float f25 = -1.0F + p_363883_;
        float f26 = f25 + f * 2.5F;
        PoseStack.Pose posestack$pose = p_362984_.last();
        vertex(p_361642_, posestack$pose, f15, f, f16, i, j, k, 0.4999F, f26);
        vertex(p_361642_, posestack$pose, f15, 0.0F, f16, i, j, k, 0.4999F, f25);
        vertex(p_361642_, posestack$pose, f17, 0.0F, f18, i, j, k, 0.0F, f25);
        vertex(p_361642_, posestack$pose, f17, f, f18, i, j, k, 0.0F, f26);
        vertex(p_361642_, posestack$pose, f19, f, f20, i, j, k, 0.4999F, f26);
        vertex(p_361642_, posestack$pose, f19, 0.0F, f20, i, j, k, 0.4999F, f25);
        vertex(p_361642_, posestack$pose, f21, 0.0F, f22, i, j, k, 0.0F, f25);
        vertex(p_361642_, posestack$pose, f21, f, f22, i, j, k, 0.0F, f26);
        float f27 = Mth.floor(p_368702_) % 2 == 0 ? 0.5F : 0.0F;
        vertex(p_361642_, posestack$pose, f7, f, f8, i, j, k, 0.5F, f27 + 0.5F);
        vertex(p_361642_, posestack$pose, f9, f, f10, i, j, k, 1.0F, f27 + 0.5F);
        vertex(p_361642_, posestack$pose, f13, f, f14, i, j, k, 1.0F, f27);
        vertex(p_361642_, posestack$pose, f11, f, f12, i, j, k, 0.5F, f27);
    }

    private static void vertex(
        VertexConsumer p_253637_,
        PoseStack.Pose p_334069_,
        float p_253994_,
        float p_254492_,
        float p_254474_,
        int p_254080_,
        int p_253655_,
        int p_254133_,
        float p_254233_,
        float p_253939_
    ) {
        p_253637_.addVertex(p_334069_, p_253994_, p_254492_, p_254474_)
            .setColor(p_254080_, p_253655_, p_254133_, 255)
            .setUv(p_254233_, p_253939_)
            .setOverlay(OverlayTexture.NO_OVERLAY)
            .setLight(15728880)
            .setNormal(p_334069_, 0.0F, 1.0F, 0.0F);
    }

    public ResourceLocation getTextureLocation(GuardianRenderState p_361264_) {
        return GUARDIAN_LOCATION;
    }

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

    public void extractRenderState(Guardian p_365802_, GuardianRenderState p_365304_, float p_367592_) {
        super.extractRenderState(p_365802_, p_365304_, p_367592_);
        p_365304_.spikesAnimation = p_365802_.getSpikesAnimation(p_367592_);
        p_365304_.tailAnimation = p_365802_.getTailAnimation(p_367592_);
        p_365304_.eyePosition = p_365802_.getEyePosition(p_367592_);
        Entity entity = getEntityToLookAt(p_365802_);
        if (entity != null) {
            p_365304_.lookDirection = p_365802_.getViewVector(p_367592_);
            p_365304_.lookAtPosition = entity.getEyePosition(p_367592_);
        } else {
            p_365304_.lookDirection = null;
            p_365304_.lookAtPosition = null;
        }

        LivingEntity livingentity = p_365802_.getActiveAttackTarget();
        if (livingentity != null) {
            p_365304_.attackScale = p_365802_.getAttackAnimationScale(p_367592_);
            p_365304_.attackTime = p_365802_.getClientSideAttackTime() + p_367592_;
            p_365304_.attackTargetPosition = this.getPosition(livingentity, livingentity.getBbHeight() * 0.5, p_367592_);
        } else {
            p_365304_.attackTargetPosition = null;
        }
    }

    @Nullable
    private static Entity getEntityToLookAt(Guardian p_369397_) {
        Entity entity = Minecraft.getInstance().getCameraEntity();
        return (Entity)(p_369397_.hasActiveAttackTarget() ? p_369397_.getActiveAttackTarget() : entity);
    }
}