minecraft-kajetans-mod/src/main/java/me/km/overrides/ModCapeLayer.java

package me.km.overrides;

import com.mojang.blaze3d.platform.GlStateManager;
import net.minecraft.client.entity.player.AbstractClientPlayerEntity;
import net.minecraft.client.renderer.entity.IEntityRenderer;
import net.minecraft.client.renderer.entity.layers.CapeLayer;
import net.minecraft.client.renderer.entity.model.PlayerModel;
import net.minecraft.entity.player.PlayerModelPart;
import net.minecraft.inventory.EquipmentSlotType;
import net.minecraft.item.ItemStack;
import net.minecraft.item.Items;
import net.minecraft.util.ResourceLocation;
import net.minecraft.util.math.MathHelper;
import net.minecraftforge.api.distmarker.Dist;
import net.minecraftforge.api.distmarker.OnlyIn;

@OnlyIn(Dist.CLIENT)
public class ModCapeLayer extends CapeLayer
{
    public ModCapeLayer(IEntityRenderer<AbstractClientPlayerEntity, PlayerModel<AbstractClientPlayerEntity>> pRenderer)
    {
        super(pRenderer);
    }

    @Override
    public void render(AbstractClientPlayerEntity entityIn, float p_212842_2_, float p_212842_3_, float p_212842_4_, float p_212842_5_, float p_212842_6_, float p_212842_7_, float p_212842_8_)
    {
        if(entityIn.hasPlayerInfo() && !entityIn.isInvisible() && entityIn.isWearing(PlayerModelPart.CAPE))
        {
            ItemStack itemstack = entityIn.getItemStackFromSlot(EquipmentSlotType.CHEST);
            if(itemstack.getItem() != Items.ELYTRA)
            {
                ResourceLocation rl = PlayerCapeLoader.INSTANCE.getTexture(entityIn.getUniqueID());
                if(rl == null)
                {
                    return;
                }
                
                GlStateManager.color4f(1.0F, 1.0F, 1.0F, 1.0F);
                this.bindTexture(rl);
                GlStateManager.pushMatrix();
                GlStateManager.translatef(0.0F, 0.0F, 0.125F);
                double d0 = MathHelper.lerp((double) p_212842_4_, entityIn.prevChasingPosX, entityIn.chasingPosX) - MathHelper.lerp((double) p_212842_4_, entityIn.prevPosX, entityIn.posX);
                double d1 = MathHelper.lerp((double) p_212842_4_, entityIn.prevChasingPosY, entityIn.chasingPosY) - MathHelper.lerp((double) p_212842_4_, entityIn.prevPosY, entityIn.posY);
                double d2 = MathHelper.lerp((double) p_212842_4_, entityIn.prevChasingPosZ, entityIn.chasingPosZ) - MathHelper.lerp((double) p_212842_4_, entityIn.prevPosZ, entityIn.posZ);
                float f = entityIn.prevRenderYawOffset + (entityIn.renderYawOffset - entityIn.prevRenderYawOffset);
                double d3 = (double) MathHelper.sin(f * ((float) Math.PI / 180F));
                double d4 = (double) (-MathHelper.cos(f * ((float) Math.PI / 180F)));
                float f1 = (float) d1 * 10.0F;
                f1 = MathHelper.clamp(f1, -6.0F, 32.0F);
                float f2 = (float) (d0 * d3 + d2 * d4) * 100.0F;
                f2 = MathHelper.clamp(f2, 0.0F, 150.0F);
                float f3 = (float) (d0 * d4 - d2 * d3) * 100.0F;
                f3 = MathHelper.clamp(f3, -20.0F, 20.0F);
                if(f2 < 0.0F)
                {
                    f2 = 0.0F;
                }

                float f4 = MathHelper.lerp(p_212842_4_, entityIn.prevCameraYaw, entityIn.cameraYaw);
                f1 = f1 + MathHelper.sin(MathHelper.lerp(p_212842_4_, entityIn.prevDistanceWalkedModified, entityIn.distanceWalkedModified) * 6.0F) * 32.0F * f4;
                if(entityIn.shouldRenderSneaking())
                {
                    f1 += 25.0F;
                }

                GlStateManager.rotatef(6.0F + f2 / 2.0F + f1, 1.0F, 0.0F, 0.0F);
                GlStateManager.rotatef(f3 / 2.0F, 0.0F, 0.0F, 1.0F);
                GlStateManager.rotatef(-f3 / 2.0F, 0.0F, 1.0F, 0.0F);
                GlStateManager.rotatef(180.0F, 0.0F, 1.0F, 0.0F);
                this.getEntityModel().renderCape(0.0625F);
                GlStateManager.popMatrix();
            }
        }
    }
}