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[solved] [1.15.2] How do i make the tail of my entity show it´s health like the wolf?


Drachenbauer

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Hello

 

In the entity-class of the wolf, i founf a method for it´s tail to show it´s health.

    @OnlyIn(Dist.CLIENT)
    public float getTailRotation()
    {
        if (this.isAngry())
        {
            return 1.5393804F;
        }
        else
        {
            return this.isTamed() ? (0.55F - (this.getMaxHealth() - this.getHealth()) * 0.02F) * (float)Math.PI : ((float)Math.PI / 5F);
        }
    }

I reduced it to this for my own entity:

    @OnlyIn(Dist.CLIENT)
    public float getTailRotation()
    {
         return this.isTamed() ?  (0.55F - (this.getMaxHealth() - this.getHealth()) * 0.02F) * (float)Math.PI : ((float)Math.PI / 5F);
    }

Now, i want to remove the "isTamed"-part of the line, because i don´t work with taming theese entities.

But, if i try this, an error appears on the first position of Math.PI.

So i wonder, what "?" and ":" mean and how i can get rid of "isTamed" here...

Can you help?

 

Edit:

After alot of google i gound out, that "?" and ":" used together in such a case are another version of "if" and "else".

So i just hat to keep the part between them and remove the rest.

This is the result:

@OnlyIn(Dist.CLIENT)
    public float getTailRotation()
    {
         return (0.55F - (this.getMaxHealth() - this.getHealth()) * 0.02F) * (float)Math.PI;
    }

 

Edited by Drachenbauer
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  • 4 weeks later...

Now the tail of my entity is invisible (maybe it´s rotated into the body)

 

Entity-Class:

/** 
 ** This is Coral, an angler-fish-character from a not so well known Rovio-game called "Fruit-Nibblers".
 ** I added her here, because her game is from the creators of Angry Birds, too.
 ** I like her look and I think, it maybe a good idea to make her best friends with Stella
 **/

package drachenbauer32.angrybirdsmod.entities;

import net.minecraft.entity.AgeableEntity;
import net.minecraft.entity.EntityType;
import net.minecraft.entity.Pose;
import net.minecraft.entity.SharedMonsterAttributes;
import net.minecraft.entity.ai.goal.LookAtGoal;
import net.minecraft.entity.ai.goal.LookRandomlyGoal;
import net.minecraft.entity.ai.goal.RandomSwimmingGoal;
import net.minecraft.entity.ai.goal.RandomWalkingGoal;
import net.minecraft.entity.ai.goal.SwimGoal;
import net.minecraft.entity.passive.AnimalEntity;
import net.minecraft.entity.player.PlayerEntity;
import net.minecraft.world.World;
import net.minecraftforge.api.distmarker.Dist;
import net.minecraftforge.api.distmarker.OnlyIn;

public class CoralEntity extends AnimalEntity
{
    public CoralEntity(EntityType<? extends CoralEntity> type, World worldIn)
    {
        super(type, worldIn);
    }
    
    @Override
    public AgeableEntity createChild(AgeableEntity arg0)
    {
        return null;
    }
    
    @Override
    public float getEyeHeight(Pose pose)
    {
        return this.getSize(pose).height / 2 + getSize(pose).height / 14;
    }
    
    @Override
    protected void registerGoals()
    {
        this.goalSelector.addGoal(0, new SwimGoal(this));
        this.goalSelector.addGoal(1, new RandomSwimmingGoal(this, 0.2d, 10));
        this.goalSelector.addGoal(2, new RandomWalkingGoal(this, 0.2d));
        this.goalSelector.addGoal(3, new LookAtGoal(this, PlayerEntity.class, 6.0F));
        this.goalSelector.addGoal(4, new LookRandomlyGoal(this));
    }
    
    @Override
    public boolean canBreatheUnderwater()
    {
        return true;
    }
    
    @Override
    protected void registerAttributes()
    {
        super.registerAttributes();
        this.getAttribute(SharedMonsterAttributes.MAX_HEALTH).setBaseValue(20.0D);
    }
    
    @OnlyIn(Dist.CLIENT)
    public float getTailRotation()
    {
         return (0.55F - (this.getMaxHealth() - this.getHealth()) * 0.02F) * (float)Math.PI;
    }
}

 

Renderer-class:

package drachenbauer32.angrybirdsmod.entities.renderers;

import drachenbauer32.angrybirdsmod.entities.CoralEntity;
import drachenbauer32.angrybirdsmod.entities.models.CoralModel;
import drachenbauer32.angrybirdsmod.util.Reference;
import net.minecraft.client.renderer.entity.EntityRendererManager;
import net.minecraft.client.renderer.entity.MobRenderer;
import net.minecraft.client.renderer.entity.model.EntityModel;
import net.minecraft.util.ResourceLocation;

public class CoralRenderer extends MobRenderer<CoralEntity, EntityModel<CoralEntity>>
{
    private static final ResourceLocation CORAL_TEXTURE = new ResourceLocation(Reference.MOD_ID + ":textures/entity/coral.png");
    
    public CoralRenderer(final EntityRendererManager manager)
    {
        super(manager, new CoralModel<>(), 0.625f);
    }
    
    @Override
    public ResourceLocation getEntityTexture(CoralEntity coral)
    {
        return CORAL_TEXTURE;
    }
    
    @Override
    protected float handleRotationFloat(CoralEntity coral, float partialTicks)
    {
        return coral.getTailRotation();
    }
    
    /*public static class RenderFactory implements IRenderFactory<CoralEntity>
    {
        @Override
        public EntityRenderer<? super CoralEntity> createRenderFor(EntityRendererManager manager)
        {
            return new CoralRenderer(manager);
        }
    }*/
}

 

Model-class

package drachenbauer32.angrybirdsmod.entities.models;

import com.google.common.collect.ImmutableList;
import drachenbauer32.angrybirdsmod.entities.CoralEntity;
import net.minecraft.client.renderer.entity.model.AgeableModel;
import net.minecraft.client.renderer.model.ModelRenderer;
import net.minecraft.util.math.MathHelper;

public class CoralModel<T extends CoralEntity> extends AgeableModel<T>
{
    private final ModelRenderer bone;
    private final ModelRenderer bone2;
    private final ModelRenderer bone3;
    private final ModelRenderer bone4;
    private final ModelRenderer bone5;
    private final ModelRenderer bone6;
    private final ModelRenderer bone7;
    
    public CoralModel()
    {
        textureWidth = 56;
        textureHeight = 32;
        
        bone = new ModelRenderer(this);
        bone.setRotationPoint(0.0F, 18.1F, 0.0F);
        bone.addBox("head", -4.0F, -8.0F, -4.0F, 8, 8, 8, 0.0F, 0, 0);
        bone.addBox("antenna_part_1", -0.5F, -12.0F, -4.0F, 1, 4, 1, 0.0F, 28, 0);
        bone.addBox("antenna_part_2", -0.5F, -12.0F, -6.0F, 1, 1, 2, 0.0F, 24, 5);
        bone.addBox("antenna_light", -1.0F, -12.0F, -8.0F, 2, 3, 2, 0.0F, 0, 0);
        bone.addBox("back_fin", 0.0F, -12.0F, 0.0F, 0, 12, 6, 0.0F, 38, 6);
        
        bone2 = new ModelRenderer(this);
        bone2.setRotationPoint(0.0F, 20.1F, 0.0F);
        bone2.addBox("body", -3.0F, -4.0F, -3.0F, 6, 6, 6, 0.0F, 32, 0);
        
        bone3 = new ModelRenderer(this);
        bone3.setRotationPoint(-2.0F, 22.1F, -2.0F);
        bone3.addBox("right_front_leg", -1.0F, 0.0F, -1.0F, 2, 2, 2, 0.0F, 0, 16);
        bone3.addBox("right_front_flipper",  -1.0F, 2.0F, -2.0F, 2, 0, 1, 0.0F, 1, 20);
        
        bone4 = new ModelRenderer(this);
        bone4.setRotationPoint(2.0F, 22.1F, -2.0F);
        bone4.addBox("left_front_leg", -1.0F, 0.0F, -1.0F, 2, 2, 2, 0.0F, 8, 16);
        bone4.addBox("left_front_flipper",  -1.0F, 2.0F, -2.0F, 2, 0, 1, 0.0F, 9, 20);
        
        bone5 = new ModelRenderer(this);
        bone5.setRotationPoint(-2.0F, 22.1F, 2.0F);
        bone5.addBox("right_hind_leg", -1.0F, 0.0F, -1.0F, 2, 2, 2, 0.0F, 16, 16);
        bone5.addBox("right_hind_flipper",  -1.0F, 2.0F, -2.0F, 2, 0, 1, 0.0F, 17, 20);
        
        bone6 = new ModelRenderer(this);
        bone6.setRotationPoint(2.0F, 22.1F, 2.0F);
        bone6.addBox("left_hind_leg", -1.0F, 0.0F, -1.0F, 2, 2, 2, 0.0F, 24, 16);
        bone6.addBox("left_hind_flipper",  -1.0F, 2.0F, -2.0F, 2, 0, 1, 0.0F, 25, 20);
        
        bone7 = new ModelRenderer(this);
        bone7.setRotationPoint(0.0F, 20.1F, 3.0F);
        bone7.addBox("tail_part_1", -2.0F, -2.0F, 0.0F, 4, 4, 4, 0.0F, 24, 16);
        bone7.addBox("tail_part_1", -1.0F, 0.0F, 4.0F, 2, 2, 2, 0.0F, 24, 16);
        bone7.addBox("tail_fin",  0.0F, -1.0F, 6.0f, 2, 0, 1, 0.0F, 25, 20);
    }
    
    @Override
    protected Iterable<ModelRenderer> getHeadParts()
    {
        return ImmutableList.of(bone);
    }
    
    @Override
    protected Iterable<ModelRenderer> getBodyParts()
    {
        return ImmutableList.of(bone2, bone3, bone4, bone5, bone6, bone7);
    }
    
    @Override
    public void setRotationAngles(CoralEntity coral, float limbSwing, float limbSwingAmount, float ageInTicks,
                                  float netHeadYaw, float headPitch)
    {
        bone.rotateAngleX = headPitch * 0.017453292f;
        bone.rotateAngleY = netHeadYaw * 0.017453292f;
        /*this.bone3.rotateAngleX = 0.5235988f + MathHelper.cos(limbSwing * 5.0f) * 1.4f * limbSwingAmount;
        this.bone4.rotateAngleX = -0.5235988f + -(MathHelper.cos(limbSwing * 5.0f) * 1.4f * limbSwingAmount);
        this.bone5.rotateAngleX = -0.5235988f + -(MathHelper.cos(limbSwing * 5.0f) * 1.4f * limbSwingAmount);
        this.bone6.rotateAngleX = 0.5235988f + MathHelper.cos(limbSwing * 5.0f) * 1.4f * limbSwingAmount;*/
        
        this.bone3.rotateAngleX = MathHelper.cos(limbSwing * 0.6662F + (float)Math.PI) * 1.4F * limbSwingAmount;
        this.bone4.rotateAngleX = MathHelper.cos(limbSwing * 0.6662F) * 1.4F * limbSwingAmount;
        this.bone5.rotateAngleX = MathHelper.cos(limbSwing * 0.6662F) * 1.4F * limbSwingAmount;
        this.bone6.rotateAngleX = MathHelper.cos(limbSwing * 0.6662F + (float)Math.PI) * 1.4F * limbSwingAmount;
        this.bone7.rotateAngleX = ageInTicks;
    }
}

bone7 is the tail,

bone3-bone6 are the legs, where i´m trying different limbswing calculations.

What´s wrong with the tail-movement?

Edited by Drachenbauer
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On 1/26/2020 at 10:07 PM, Drachenbauer said:

Hello

 

In the entity-class of the wolf, i founf a method for it´s tail to show it´s health.


    @OnlyIn(Dist.CLIENT)
    public float getTailRotation()
    {
        if (this.isAngry())
        {
            return 1.5393804F;
        }
        else
        {
            return this.isTamed() ? (0.55F - (this.getMaxHealth() - this.getHealth()) * 0.02F) * (float)Math.PI : ((float)Math.PI / 5F);
        }
    }

I reduced it to this for my own entity:


    @OnlyIn(Dist.CLIENT)
    public float getTailRotation()
    {
         return this.isTamed() ?  (0.55F - (this.getMaxHealth() - this.getHealth()) * 0.02F) * (float)Math.PI : ((float)Math.PI / 5F);
    }

Now, i want to remove the "isTamed"-part of the line, because i don´t work with taming theese entities.

But, if i try this, an error appears on the first position of Math.PI.

So i wonder, what "?" and ":" mean and how i can get rid of "isTamed" here...

Can you help?

 

Edit:

After alot of google i gound out, that "?" and ":" used together in such a case are another version of "if" and "else".

So i just hat to keep the part between them and remove the rest.

This is the result:


@OnlyIn(Dist.CLIENT)
    public float getTailRotation()
    {
         return (0.55F - (this.getMaxHealth() - this.getHealth()) * 0.02F) * (float)Math.PI;
    }

 

Would help you, but i dont know what Object1 ? Object2 : Object3 was. Still searching but can you say the name?

 

On 2/21/2020 at 7:49 PM, Drachenbauer said:

 @Override public void setRotationAngles(CoralEntity coral, float limbSwing, float limbSwingAmount, float ageInTicks,  float netHeadYaw, float headPitch) { bone.rotateAngleX = headPitch * 0.017453292f; bone.rotateAngleY = netHeadYaw * 0.017453292f; /*this.bone3.rotateAngleX = 0.5235988f + MathHelper.cos(limbSwing * 5.0f) * 1.4f * limbSwingAmount; this.bone4.rotateAngleX = -0.5235988f + -(MathHelper.cos(limbSwing * 5.0f) * 1.4f * limbSwingAmount); this.bone5.rotateAngleX = -0.5235988f + -(MathHelper.cos(limbSwing * 5.0f) * 1.4f * limbSwingAmount); this.bone6.rotateAngleX = 0.5235988f + MathHelper.cos(limbSwing * 5.0f) * 1.4f * limbSwingAmount;*/ this.bone3.rotateAngleX = MathHelper.cos(limbSwing * 0.6662F + (float)Math.PI) * 1.4F * limbSwingAmount; this.bone4.rotateAngleX = MathHelper.cos(limbSwing * 0.6662F) * 1.4F * limbSwingAmount; this.bone5.rotateAngleX = MathHelper.cos(limbSwing * 0.6662F) * 1.4F * limbSwingAmount; this.bone6.rotateAngleX = MathHelper.cos(limbSwing * 0.6662F + (float)Math.PI) * 1.4F * limbSwingAmount; this.bone7.rotateAngleX = ageInTicks; }

Here you should rotate the Tail, it is the „Animation Function“.

Edited by DragonITA

New in Modding? == Still learning!

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I still was a step further

It seams like now i have to change some of theese values to show the tail of my entity right:

return (0.55F - (this.getMaxHealth() - this.getHealth()) * 0.02F) * (float)Math.PI;

In the basic model of my entity the tail points straight to the rear.

But i don´t know, where it points at the basic wolf-model...

Ingame it should point a bit upwart, if it has full health and a bit down, , if it´s damaged (angle by damage).

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10 minutes ago, DragonITA said:

If heath was >= what you want then do something, in this case rotate the tail

Idon´t know what values exactly i have to calculate there for my entity.

 

There must be something different to the wolf with the tail´s basic angle.

other whise, it must show the same behavior as the wolf, if i use it´s code.

Edited by Drachenbauer
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if(entity.getHealth == entity.getMaxHealth) {
	//rotate the tail
}else if(entity.getHealth >= 10.0F || entity.getHealth <= entity.getMaxHealth) {
  	//rotate the tail in a other angle
}

Am writing from mobile, dont know if the functions exactly are named so.

Edited by DragonITA

New in Modding? == Still learning!

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I´, actually using this from the wolf:

return (0.55F - (this.getMaxHealth() - this.getHealth()) * 0.02F) * (float)Math.PI;

As i looked at my entity closer, i now think, the tail is not rendered...

But i do not know why...

Can you please look into my code a few posts above?

Maybe someone here finds the reason...

 

Edit:

i commented out this line in the Model-class for a test:

this.bone7.rotateAngleX = ageInTicks;

Then i noticed, that the textures of the tail where misplaced, and fixed this.

Then i activated the line again and saw the tail rotated upwards, slightly forwards.

90° defferent to a wolf´s tail.

 

Is the tail of the wolf rotated downwards in the basic model, before applying this effect?

 

how do i change the calculation at the top of this post by 90°?

 

Edit again:

With a little rotation-angle-test-model i found the value for 90°

Than i changed the line in the Model-class to:

bone7.rotateAngleX = ageInTicks - 1.5708F;

Now the tail is rotated right and i can use the rotation-calculation from the wolf sucessfully.

Edited by Drachenbauer
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Now i found another calculation, for creating the basic model with the tail straight horizontally to the rear.

And it doesn´t matter, what the max health is:

 

This in the Entity class, and the tail related things in the Renderer and Model-class exactly like used for the wolf:

    @OnlyIn(Dist.CLIENT)
    public float getTailRotation()
    {
        return -0.7854F + (this.getHealth() / this.getMaxHealth() * 1.0472F);
    }

 

the first float here is for 45° down and the second float is for a range of 60° With full health, the tail is 15° above horizontal and in the kill moment it´s 45° below horizontal.

 

@ DragonITA

Your variant has only a few angle steps for specific health value renges.

Mine in more smooth.

The tail-angle is changed a tiny little bit for each little bit of health, the entity looses.

And my code is shorter.

yours needs another "else if" -line for each angle-step.

Edited by Drachenbauer
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