How to make mountable entity ignore player hits?

[Jetug]

I have an armor that is a mountable entity and when I sit in it and try to hit something I hit the hitbox of my entity. How to make my entity ignore my hits?

[ChampionAsh5357]

Entities can only be avoided if `#isPickable` returns false; however, this typically results in the entity not being able to be selected at all, which is usually not ideal. Best way to fix this issue is just to make your entity a custom armor item model instead.

[Jetug]

  On 12/27/2022 at 3:28 PM, ChampionAsh5357 said:

Entities can only be avoided if `#isPickable` returns false; however, this typically results in the entity not being able to be selected at all, which is usually not ideal. Best way to fix this issue is just to make your entity a custom armor item model instead.

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Thanks but it doesn't work for me because I want to make my armor work like power armor in Fallout 4, so it has to be an entity

[Jetug]

  On 12/27/2022 at 3:28 PM, ChampionAsh5357 said:

Entities can only be avoided if `#isPickable` returns false; however, this typically results in the entity not being able to be selected at all, which is usually not ideal. Best way to fix this issue is just to make your entity a custom armor item model instead.

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Do you know what method in the minecraft code is responsible for determining the player's target to hit or pick? Like when I ride a horse and break a block through its hitbox how does the game understand that it should break the block and not hit the horse?

[warjort]

Entity.pick() and ProjectileUtil.getEntityHitResult()

Used by GameRenderer.pick()

[Jetug]

  On 12/29/2022 at 1:13 PM, warjort said:

Entity.pick() and ProjectileUtil.getEntityHitResult()

Used by GameRenderer.pick()

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Yes, it looks like getEntityHitResult is what I needed, but I have no idea what the code in this method does, I tried to rewrite the code like this:

private static EntityHitResult getEntityHitResult(Entity cameraEntity, Vec3 eyePosition, Vec3 vector2, 
                                                  AABB box, Predicate<Entity> filter, double pickRange) {
    Level level = cameraEntity.level;
    double _pickRange = pickRange;
    Entity entity = null;
    Vec3 vec3 = null;
    for(Entity levelEntity : level.getEntities(cameraEntity, box, filter)) {
        AABB aabb = levelEntity.getBoundingBox().inflate(levelEntity.getPickRadius());
        Optional<Vec3>  optional = aabb.clip(eyePosition, vector2);
        if (aabb.contains(eyePosition)) {
            if (_pickRange >= 0.0D) {
                entity = levelEntity;
                vec3 = optional.orElse(eyePosition);
                _pickRange = 0.0D;
            }
        } else if (optional.isPresent()) {
            Vec3 optionalVector = optional.get();
            double distance = eyePosition.distanceToSqr(optionalVector);
            if (distance < _pickRange || _pickRange == 0.0D) {
                if (levelEntity.getRootVehicle() == cameraEntity.getRootVehicle() && !levelEntity.canRiderInteract()) {
                    if (_pickRange == 0.0D) {
                        entity = levelEntity;
                        vec3 = optionalVector;
                    }
                } else {
                    entity = levelEntity;
                    vec3 = optionalVector;
                    _pickRange = distance;
                }
            }
        }
    }
  
    //my code
    if(entity instanceof PowerArmorEntity && entity.getControllingPassenger() == Minecraft.getInstance().player)
        return new EntityHitResult(entity, vector2);
    else
        return entity == null ? null : new EntityHitResult(entity, vec3);
}

as a result, when I'm in armor, I can't hit mobs at all, but at least I can hit blocks

[Jetug]

I somehow figured out what the code doing, and now it works. Thank you

private static EntityHitResult getEntityHitResult(Entity cameraEntity, Vec3 eyePosition, Vec3 pickVector,
                                                  AABB box, Predicate<Entity> filter, double pickRange) {
    Level level = cameraEntity.level;
    double _pickRange = pickRange;
    Entity entity = null;
    Vec3 vec3 = null;
    var player = Minecraft.getInstance().player;
    for(Entity levelEntity : level.getEntities(cameraEntity, box, filter)) {
        if(levelEntity instanceof PowerArmorEntity && player != null && player.getVehicle() == levelEntity) continue;
        AABB aabb = levelEntity.getBoundingBox().inflate(levelEntity.getPickRadius());
        Optional<Vec3> optional = aabb.clip(eyePosition, pickVector);
        if (aabb.contains(eyePosition)) {
            if (_pickRange >= 0.0D) {
                entity = levelEntity;
                vec3 = optional.orElse(eyePosition);
                _pickRange = 0.0D;
            }
        } else if (optional.isPresent()) {
            Vec3 optionalVector = optional.get();
            double distance = eyePosition.distanceToSqr(optionalVector);
            if (distance < _pickRange || _pickRange == 0.0D) {
                if (levelEntity.getRootVehicle() == cameraEntity.getRootVehicle() && !levelEntity.canRiderInteract()) {
                    if (_pickRange == 0.0D) {
                        entity = levelEntity;
                        vec3 = optionalVector;
                    }
                } else {
                    entity = levelEntity;
                    vec3 = optionalVector;
                    _pickRange = distance;
                }
            }
        }
    }
    return entity == null ? null : new EntityHitResult(entity, vec3);
}

 

Edited January 3, 2023 by Jetug