SOLVED [1.17.1] Custom player layer not rendering.

[UserMC123]

I've made a custom layer for the player but its not showing in game.

Here is my model class

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    public static final ModelLayerLocation LAYER_LOCATION = new ModelLayerLocation(new ResourceLocation("test", "basic_suit"), "basic_suit");
    private final ModelPart LeftLeg;
    private final ModelPart RightLeg;
    private final ModelPart LeftArm;
    private final ModelPart RightArm;
    private final ModelPart Body;

    public BasicSuitModel(ModelPart root) {
        this.LeftLeg = root.getChild("left_leg");
        this.RightLeg = root.getChild("right_leg");
        this.LeftArm = root.getChild("left_arm");
        this.RightArm = root.getChild("right_arm");
        this.Body = root.getChild("body");
    }

    public static LayerDefinition createBodyLayer() {
        MeshDefinition meshdefinition = new MeshDefinition();
        PartDefinition partdefinition = meshdefinition.getRoot();

        PartDefinition LeftLeg = partdefinition.addOrReplaceChild("left_leg", CubeListBuilder.create().texOffs(0, 38).addBox(-3.0F, 0.0F, -3.0F, 6.0F, 12.0F, 6.0F, new CubeDeformation(0.0F)).texOffs(0, 48).addBox(-2.0F, 0.0F, -2.0F, 4.0F, 12.0F, 4.0F, new CubeDeformation(0.25F)), PartPose.offset(1.9F, 12.0F, 0.0F));

        PartDefinition RightLeg = partdefinition.addOrReplaceChild("right_leg", CubeListBuilder.create().texOffs(32, 0).addBox(-3.0F, 0.0F, -3.0F, 6.0F, 12.0F, 6.0F, new CubeDeformation(0.0F)).texOffs(0, 32).addBox(-2.0F, 0.0F, -2.0F, 4.0F, 12.0F, 4.0F, new CubeDeformation(0.25F)), PartPose.offset(-1.9F, 12.0F, 0.0F));

        PartDefinition LeftArm = partdefinition.addOrReplaceChild("left_arm", CubeListBuilder.create().texOffs(1, 19).addBox(-1.0F, -2.0F, -3.0F, 5.0F, 12.0F, 6.0F, new CubeDeformation(0.0F)).texOffs(48, 48).addBox(-1.0F, -2.0F, -2.0F, 3.0F, 12.0F, 4.0F, new CubeDeformation(0.25F)), PartPose.offsetAndRotation(5.0F, 2.0F, 0.0F, -0.7854F, 0.0F, 0.0F));

        PartDefinition RightArm = partdefinition.addOrReplaceChild("right_arm", CubeListBuilder.create().texOffs(24, 19).addBox(-3.0F, -2.0F, -3.0F, 5.0F, 13.0F, 6.0F, new CubeDeformation(0.0F)).texOffs(40, 32).addBox(-3.0F, -2.0F, -2.0F, 4.0F, 12.0F, 4.0F, new CubeDeformation(0.25F)), PartPose.offsetAndRotation(-5.0F, 2.0F, 0.0F, -0.7854F, 0.0F, 0.0F));

        PartDefinition Body = partdefinition.addOrReplaceChild("body", CubeListBuilder.create().texOffs(0, 0).addBox(-5.0F, 0.0F, -3.0F, 10.0F, 12.0F, 6.0F, new CubeDeformation(0.0F)).texOffs(16, 32).addBox(-4.0F, 0.0F, -2.0F, 8.0F, 12.0F, 4.0F, new CubeDeformation(0.25F)), PartPose.offset(0.0F, 0.0F, 0.0F));

        return LayerDefinition.create(meshdefinition, 64, 64);
    }

    @Override
    public void setupAnim(T entity, float limbSwing, float limbSwingAmount, float ageInTicks, float netHeadYaw, float headPitch) {

    }

    @Override
    public void renderToBuffer(PoseStack poseStack, VertexConsumer buffer, int packedLight, int packedOverlay, float red, float green, float blue, float alpha) {
        LeftLeg.render(poseStack, buffer, packedLight, packedOverlay);
        RightLeg.render(poseStack, buffer, packedLight, packedOverlay);
        LeftArm.render(poseStack, buffer, packedLight, packedOverlay);
        RightArm.render(poseStack, buffer, packedLight, packedOverlay);
        Body.render(poseStack, buffer, packedLight, packedOverlay);
    }

    @Override
    protected Iterable<ModelPart> headParts() {
        return null;
    }
    protected Iterable<ModelPart> bodyParts() {
        return ImmutableList.of(this.Body);
    }

Here is my Layer class

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 private static final ResourceLocation SUIT_TEX = new ResourceLocation("test","textures/entity/suits/basic/suit_main.png");
    private final BasicSuitModel<T> suitModel;

    public BasicSuitModelRenderer(RenderLayerParent<T, M> parent, EntityModelSet modelSet) {
        super(parent);
        this.suitModel = new BasicSuitModel<>(modelSet.bakeLayer(BasicSuitModel.LAYER_LOCATION));
    }

    @Override
    public void render(PoseStack p_116951_, MultiBufferSource p_116952_, int p_116953_, T p_116954_, float p_116955_, float p_116956_, float p_116957_, float p_116958_, float p_116959_, float p_116960_) {
        ItemStack itemstack = p_116954_.getItemBySlot(EquipmentSlot.CHEST);
        if (true) {
            ResourceLocation resourcelocation = getTexture( p_116954_);
            p_116951_.pushPose();
            p_116951_.translate(0.0D, 0.0D, 0.125D);
            this.getParentModel().copyPropertiesTo(this.suitModel);
            this.suitModel.setupAnim(p_116954_, p_116955_, p_116956_, p_116958_, p_116959_, p_116960_);
            VertexConsumer vertexconsumer = ItemRenderer.getArmorFoilBuffer(p_116952_, RenderType.armorCutoutNoCull(resourcelocation), false, itemstack.hasFoil());
            this.suitModel.renderToBuffer(p_116951_, vertexconsumer, p_116953_, OverlayTexture.NO_OVERLAY, 1.0F, 1.0F, 1.0F, 1.0F);
            p_116951_.popPose();
        }
    }

    public ResourceLocation getTexture(T entity) {
        return SUIT_TEX;
    }

And the registry in the main class 

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    @SubscribeEvent(priority = EventPriority.LOW)
    public void renderPlayer(final EntityRenderersEvent.AddLayers event) {
        LivingEntityRenderer<Player, PlayerModel<Player>> renderer = event.getRenderer(EntityType.PLAYER);
        BasicSuitModelRenderer<Player, PlayerModel<Player>> layer = new BasicSuitModelRenderer<>(renderer, event.getEntityModels());
        renderer.addLayer(layer);
    }
    @SubscribeEvent
    public void registerLayers(final EntityRenderersEvent.RegisterLayerDefinitions event){
        event.registerLayerDefinition(BasicSuitModel.LAYER_LOCATION, BasicSuitModel::createBodyLayer);
    }

 

What have I done wrong?

[UserMC123]

Update: I found one issue. I was not registering to ModEventBus but now I get:

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Caused by: java.lang.NullPointerException: Cannot invoke "net.minecraft.client.renderer.entity.LivingEntityRenderer.addLayer(net.minecraft.client.renderer.entity.layers.RenderLayer)" because "renderer" is null

What do I do about this?

[UserMC123]

Ah! ok... The model is showing in game now.

How do I set the rotations to be the ones on the player.

[UserMC123]

Ok so I need getParentModel().copyPropertiesTo(suitModel);

And I ran to game to see no change.

 

looking back at the armor layer code I saw the copyPropertiesTo was in HumanoidModel

So I made my model extend HumanoidModel instead of AgeableListModel and I added:

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    @Override
    protected Iterable<ModelPart> headParts() {
        return super.headParts();
    }

    @Override
    protected Iterable<ModelPart> bodyParts() {
        return super.bodyParts();
    }

but now the game won't run and I'm getting

Description: Rendering overlay

net.minecraftforge.fml.ModLoadingException: TestMod (test) encountered an error during the done event phase
§7java.util.NoSuchElementException: Can't find part head

 

What have I done wrong?

[UserMC123]

Also, I tried to extend from PlayerModel to get the same crash.

Edited November 26, 2021 by UserMC123
Typo

[UserMC123]

I assume by the stacktrace you mean this:

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---- Minecraft Crash Report ----
// Shall we play a game?

Time: 11/29/21, 9:07 AM
Description: Rendering entity in world

java.util.NoSuchElementException: Can't find part LeftLeg
    at net.minecraft.client.model.geom.ModelPart.getChild(ModelPart.java:60) ~[forge-1.17.1-37.0.126_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:runtimedistcleaner:A}
    at com.Twins730.SolarisSpace.client.Entity.Model.Suit.Basic.BasicSuitModel.<init>(BasicSuitModel.java:30) ~[%2379!:?] {re:classloading}
    at com.Twins730.SolarisSpace.client.Entity.Renderer.Suits.Basic.BasicSuitModelRenderer.render(BasicSuitModelRenderer.java:28) ~[%2379!:?] {re:classloading}
    at com.Twins730.SolarisSpace.client.Entity.Renderer.Suits.Basic.BasicSuitModelRenderer.render(BasicSuitModelRenderer.java:16) ~[%2379!:?] {re:classloading}
    at net.minecraft.client.renderer.entity.LivingEntityRenderer.render(LivingEntityRenderer.java:126) ~[forge-1.17.1-37.0.126_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
    at net.minecraft.client.renderer.entity.player.PlayerRenderer.render(PlayerRenderer.java:62) ~[forge-1.17.1-37.0.126_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraft.client.renderer.entity.player.PlayerRenderer.render(PlayerRenderer.java:43) ~[forge-1.17.1-37.0.126_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraft.client.renderer.entity.EntityRenderDispatcher.render(EntityRenderDispatcher.java:129) ~[forge-1.17.1-37.0.126_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
    at net.minecraft.client.renderer.LevelRenderer.renderEntity(LevelRenderer.java:1280) ~[forge-1.17.1-37.0.126_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
    at net.minecraft.client.renderer.LevelRenderer.renderLevel(LevelRenderer.java:1076) ~[forge-1.17.1-37.0.126_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
    at net.minecraft.client.renderer.GameRenderer.renderLevel(GameRenderer.java:1050) ~[forge-1.17.1-37.0.126_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
    at net.minecraft.client.renderer.GameRenderer.render(GameRenderer.java:830) ~[forge-1.17.1-37.0.126_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
    at net.minecraft.client.Minecraft.runTick(Minecraft.java:1039) ~[forge-1.17.1-37.0.126_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
    at net.minecraft.client.Minecraft.run(Minecraft.java:659) ~[forge-1.17.1-37.0.126_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
    at net.minecraft.client.main.Main.main(Main.java:186) ~[forge-1.17.1-37.0.126_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:runtimedistcleaner:A}
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?] {}
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78) ~[?:?] {}
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?] {}
    at java.lang.reflect.Method.invoke(Method.java:567) ~[?:?] {}
    at net.minecraftforge.fml.loading.targets.ForgeClientUserdevLaunchHandler.lambda$launchService$0(ForgeClientUserdevLaunchHandler.java:38) ~[fmlloader-1.17.1-37.0.126.jar%233!:?] {}
    at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-9.0.7.jar%238!:?] {}
    at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:53) [modlauncher-9.0.7.jar%238!:?] {}
    at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:71) [modlauncher-9.0.7.jar%238!:?] {}
    at cpw.mods.modlauncher.Launcher.run(Launcher.java:106) [modlauncher-9.0.7.jar%238!:?] {}
    at cpw.mods.modlauncher.Launcher.main(Launcher.java:77) [modlauncher-9.0.7.jar%238!:?] {}
    at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:26) [modlauncher-9.0.7.jar%238!:?] {}
    at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:23) [modlauncher-9.0.7.jar%238!:?] {}
    at cpw.mods.bootstraplauncher.BootstrapLauncher.main(BootstrapLauncher.java:90) [bootstraplauncher-0.1.17.jar:?] {}

A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Thread: Render thread
Stacktrace:
    at net.minecraft.client.model.geom.ModelPart.getChild(ModelPart.java:60) ~[forge-1.17.1-37.0.126_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:runtimedistcleaner:A}
    at com.Twins730.SolarisSpace.client.Entity.Model.Suit.Basic.BasicSuitModel.<init>(BasicSuitModel.java:30) ~[%2379!:?] {re:classloading}
    at com.Twins730.SolarisSpace.client.Entity.Renderer.Suits.Basic.BasicSuitModelRenderer.render(BasicSuitModelRenderer.java:28) ~[%2379!:?] {re:classloading}
    at com.Twins730.SolarisSpace.client.Entity.Renderer.Suits.Basic.BasicSuitModelRenderer.render(BasicSuitModelRenderer.java:16) ~[%2379!:?] {re:classloading}
    at net.minecraft.client.renderer.entity.LivingEntityRenderer.render(LivingEntityRenderer.java:126) ~[forge-1.17.1-37.0.126_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
    at net.minecraft.client.renderer.entity.player.PlayerRenderer.render(PlayerRenderer.java:62) ~[forge-1.17.1-37.0.126_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraft.client.renderer.entity.player.PlayerRenderer.render(PlayerRenderer.java:43) ~[forge-1.17.1-37.0.126_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:runtimedistcleaner:A}
-- Entity being rendered --
Details:
    Entity Type: minecraft:player (net.minecraft.client.player.LocalPlayer)
    Entity ID: 199
    Entity Name: Dev
    Entity's Exact location: 300.65, 75.00, 104.99
    Entity's Block location: World: (300,75,104), Section: (at 12,11,8 in 18,4,6; chunk contains blocks 288,0,96 to 303,255,111), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
    Entity's Momentum: 0.00, -0.08, 0.00
    Entity's Passengers: []
    Entity's Vehicle: null

-- Renderer details --
Details:
    Assigned renderer: net.minecraft.client.renderer.entity.player.PlayerRenderer@387c5d79
    Location: 0.83,-5.49,-0.57 - World: (0,-6,-1), Section: (at 0,10,15 in 0,-1,-1; chunk contains blocks 0,0,-16 to 15,255,-1), Region: (0,-1; contains chunks 0,-32 to 31,-1, blocks 0,0,-512 to 511,255,-1)
    Rotation: -124.3446
    Delta: 0.54000616
Stacktrace:
    at net.minecraft.client.renderer.entity.EntityRenderDispatcher.render(EntityRenderDispatcher.java:129) ~[forge-1.17.1-37.0.126_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
    at net.minecraft.client.renderer.LevelRenderer.renderEntity(LevelRenderer.java:1280) ~[forge-1.17.1-37.0.126_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
    at net.minecraft.client.renderer.LevelRenderer.renderLevel(LevelRenderer.java:1076) ~[forge-1.17.1-37.0.126_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
    at net.minecraft.client.renderer.GameRenderer.renderLevel(GameRenderer.java:1050) ~[forge-1.17.1-37.0.126_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}

-- Affected level --
Details:
    All players: 1 total; [LocalPlayer['Dev'/199, l='ClientLevel', x=300.65, y=75.00, z=104.99]]
    Chunk stats: 441, 236
    Level dimension: minecraft:overworld
    Level spawn location: World: (32,66,-64), Section: (at 0,2,0 in 2,4,-4; chunk contains blocks 32,0,-64 to 47,255,-49), Region: (0,-1; contains chunks 0,-32 to 31,-1, blocks 0,0,-512 to 511,255,-1)
    Level time: 85016 game time, 20965 day time
    Server brand: forge
    Server type: Integrated singleplayer server
Stacktrace:
    at net.minecraft.client.multiplayer.ClientLevel.fillReportDetails(ClientLevel.java:364) ~[forge-1.17.1-37.0.126_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraft.client.Minecraft.fillReport(Minecraft.java:2245) ~[forge-1.17.1-37.0.126_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
    at net.minecraft.client.Minecraft.run(Minecraft.java:676) ~[forge-1.17.1-37.0.126_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
    at net.minecraft.client.main.Main.main(Main.java:186) ~[forge-1.17.1-37.0.126_mapped_official_1.17.1-recomp.jar%2375!:?] {re:classloading,pl:runtimedistcleaner:A}
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?] {}
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78) ~[?:?] {}
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?] {}
    at java.lang.reflect.Method.invoke(Method.java:567) ~[?:?] {}
    at net.minecraftforge.fml.loading.targets.ForgeClientUserdevLaunchHandler.lambda$launchService$0(ForgeClientUserdevLaunchHandler.java:38) ~[fmlloader-1.17.1-37.0.126.jar%233!:?] {}
    at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-9.0.7.jar%238!:?] {}
    at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:53) [modlauncher-9.0.7.jar%238!:?] {}
    at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:71) [modlauncher-9.0.7.jar%238!:?] {}
    at cpw.mods.modlauncher.Launcher.run(Launcher.java:106) [modlauncher-9.0.7.jar%238!:?] {}
    at cpw.mods.modlauncher.Launcher.main(Launcher.java:77) [modlauncher-9.0.7.jar%238!:?] {}
    at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:26) [modlauncher-9.0.7.jar%238!:?] {}
    at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:23) [modlauncher-9.0.7.jar%238!:?] {}
    at cpw.mods.bootstraplauncher.BootstrapLauncher.main(BootstrapLauncher.java:90) [bootstraplauncher-0.1.17.jar:?] {}

 

If I am incorrect just tell me.

Also I have made changes to my code.

[UserMC123]

Ok Here is the Updated Code:

The Model Class:

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public class BasicSuitModel extends HumanoidModel<AbstractClientPlayer> {

    public static final ModelLayerLocation LAYER_LOCATION = new ModelLayerLocation(new ResourceLocation(SolarisSpace.MOD_ID, "basic_suit"), "basic_suit_wearable");
    private final ModelPart LeftLeg;
    private final ModelPart RightLeg;
    private final ModelPart LeftArm;
    private final ModelPart RightArm;
    private final ModelPart Body;

    public BasicSuitModel(ModelPart p_170821_) {
        super(p_170821_);
        this.LeftLeg = p_170821_.getChild("LeftLeg");
        this.RightLeg = p_170821_.getChild("RightLeg");
        this.LeftArm = p_170821_.getChild("LeftArm");
        this.RightArm = p_170821_.getChild("RightArm");
        this.Body = p_170821_.getChild("Body");
    }

    public void setupAngles(PlayerModel model) {
        this.Body.copyFrom(model.body);
        this.LeftArm.copyFrom(model.leftArm);
        this.RightArm.copyFrom(model.rightArm);
        this.LeftLeg.copyFrom(model.leftLeg);
        this.RightLeg.copyFrom(model.rightLeg);
    }

    public static LayerDefinition createBodyLayer() {
        MeshDefinition meshdefinition = new MeshDefinition();
        PartDefinition partdefinition = meshdefinition.getRoot();

        CubeDeformation cube = CubeDeformation.NONE;
        meshdefinition = HumanoidModel.createMesh(cube, 0.0F);
        partdefinition = meshdefinition.getRoot().getChild("body");

        PartDefinition LeftLeg = partdefinition.addOrReplaceChild("LeftLeg", CubeListBuilder.create().texOffs(0, 38).addBox(-3.0F, 0.0F, -3.0F, 6.0F, 12.0F, 6.0F, new CubeDeformation(0.0F)).texOffs(0, 48).addBox(-2.0F, 0.0F, -2.0F, 4.0F, 12.0F, 4.0F, new CubeDeformation(0.25F)), PartPose.offset(1.9F, 12.0F, 0.0F));
        PartDefinition RightLeg = partdefinition.addOrReplaceChild("RightLeg", CubeListBuilder.create().texOffs(32, 0).addBox(-3.0F, 0.0F, -3.0F, 6.0F, 12.0F, 6.0F, new CubeDeformation(0.0F)).texOffs(0, 32).addBox(-2.0F, 0.0F, -2.0F, 4.0F, 12.0F, 4.0F, new CubeDeformation(0.25F)), PartPose.offset(-1.9F, 12.0F, 0.0F));
        PartDefinition LeftArm = partdefinition.addOrReplaceChild("LeftArm", CubeListBuilder.create().texOffs(0, 19).addBox(-1.0F, -3.0F, -3.0F, 6.0F, 13.0F, 6.0F, new CubeDeformation(0.0F)).texOffs(48, 48).addBox(-1.0F, -2.0F, -2.0F, 4.0F, 12.0F, 4.0F, new CubeDeformation(0.25F)), PartPose.offset(5.0F, 2.0F, 0.0F));
        PartDefinition RightArm = partdefinition.addOrReplaceChild("RightArm", CubeListBuilder.create().texOffs(22, 19).addBox(-4.0F, -3.0F, -3.0F, 6.0F, 13.0F, 6.0F, new CubeDeformation(0.0F)).texOffs(40, 32).addBox(-3.0F, -2.0F, -2.0F, 4.0F, 12.0F, 4.0F, new CubeDeformation(0.25F)), PartPose.offset(-5.0F, 2.0F, 0.0F));
        PartDefinition Body = partdefinition.addOrReplaceChild("Body", CubeListBuilder.create().texOffs(0, 0).addBox(-5.0F, -1.0F, -3.0F, 10.0F, 13.0F, 6.0F, new CubeDeformation(0.0F)).texOffs(16, 32).addBox(-4.0F, 0.0F, -2.0F, 8.0F, 12.0F, 4.0F, new CubeDeformation(0.25F)), PartPose.offset(0.0F, 0.0F, 0.0F));

        return LayerDefinition.create(meshdefinition, 64, 64);
    }

    @Override
    public void renderToBuffer(PoseStack poseStack, VertexConsumer buffer, int packedLight, int packedOverlay, float red, float green, float blue, float alpha) {
        LeftLeg.render(poseStack, buffer, packedLight, packedOverlay);
        RightLeg.render(poseStack, buffer, packedLight, packedOverlay);
        LeftArm.render(poseStack, buffer, packedLight, packedOverlay);
        RightArm.render(poseStack, buffer, packedLight, packedOverlay);
        Body.render(poseStack, buffer, packedLight, packedOverlay);
    }

    @Override
    protected Iterable<ModelPart> headParts() {
        return ImmutableList.of(this.head);
    }

    @Override
    protected Iterable<ModelPart> bodyParts() {
        return ImmutableList.of(this.body, this.rightArm, this.leftArm, this.rightLeg, this.leftLeg, this.hat);
    }
}

My Renderer class:

  Reveal hidden contents

public class BasicSuitModelRenderer extends RenderLayer<AbstractClientPlayer, PlayerModel<AbstractClientPlayer>> {

    private static final ResourceLocation SUIT_TEX = new ResourceLocation(SolarisSpace.MOD_ID,"textures/entity/suits/basic/suit_main.png");
    private BasicSuitModel suitModel;

    public BasicSuitModelRenderer(RenderLayerParent<AbstractClientPlayer, PlayerModel<AbstractClientPlayer>> renderer) {
        super(renderer);
    }

    @Override
    public void render(PoseStack poseStack, MultiBufferSource p_116952_, int p_116953_, AbstractClientPlayer p_116954_, float p_116955_, float p_116956_, float p_116957_, float p_116958_, float p_116959_, float p_116960_) {
        suitModel = new BasicSuitModel(BasicSuitModel.createBodyLayer().bakeRoot());
        if (true) {
            poseStack.pushPose();
            ((PlayerModel)this.getParentModel()).copyPropertiesTo(this.suitModel);
            this.suitModel.setupAngles((PlayerModel)this.getParentModel());
            poseStack.translate(0.0D, 0.0D, 0.0D);
            this.suitModel.setupAnim(p_116954_, p_116955_, p_116956_, p_116958_, p_116959_, p_116960_);
            VertexConsumer vertexConsumer = p_116952_.getBuffer(RenderType.entityCutoutNoCull(SUIT_TEX));
            this.suitModel.renderToBuffer(poseStack, vertexConsumer, p_116953_, OverlayTexture.NO_OVERLAY, 1,1,1, 1.0F);
            poseStack.popPose();
        }
    }

}

And the updated Main Class:

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    @SubscribeEvent
    public void layerDefinitions(EntityRenderersEvent.RegisterLayerDefinitions event) {
      event.registerLayerDefinition(BasicSuitModel.LAYER_LOCATION, () -> {
            return BasicSuitModel.createBodyLayer();
        });
    }

    @SubscribeEvent
    public void addLayers(EntityRenderersEvent.AddLayers evt) {
        addPlayerLayer(evt, "default");
        addPlayerLayer(evt, "slim");
    }

    private void addPlayerLayer(EntityRenderersEvent.AddLayers evt, String skin) {
        EntityRenderer<? extends Player> renderer = evt.getSkin(skin);
        if (renderer instanceof LivingEntityRenderer) {
            LivingEntityRenderer livingRenderer = (LivingEntityRenderer)renderer;
            livingRenderer.addLayer(new BasicSuitModelRenderer(livingRenderer));
        }

    }

Also, I realized that the Main Class Events shouldn't be static and now the game runs but the model isn't rendering.

[UserMC123]

Solved