Make an entity shoot arrows / Apply effects on Hit

Started by MagyTheMage on Thu, 03/26/2020 - 05:15

Topic category: Help with MCreator software

Hello, i had a question on two separate topics, however both are based on the same mob, so i decided to make em both in one;

First, how do i make my entity shoot actual arrows? Or other projectiles of any kind? I know that you can select for them to shoot it in item form, but its not what i need, id like them to shoot a real arrow, the one you'd get from firing bow, is this possible? Ive though several different ways but im not sure if any would work

- Commands; spawning an entity;arrow going in a direction with a certain speed COULD work, but im not sure how to even do such a thing

- Source code editting; Theoretically if i change the projectile type in the code itself, would this be possible?

- Make an entity actually use a bow?: i have no idea how to make this work, but if the entity actually usez their bow then the can probably shoot arrows

Onto the other question, how do i make a procedure that makes a mob do a effect.on something that it hits? I know "Entity attacked" is a thing, but that refers to "When an entity is attacked" and not when "Entity attacks" and i see no "when entity deals damage" or "when entity attacks"

There is also no easy way to apply a selector, outside of commands, all blocks have a " do X to provided entity" and i cant find a way to tell it "Provided entity = attacker" to properly apply a potion effect even using what i know i have "Entity attacked"

Could anyone lend me a hand?

Jump to top

Edited by MagyTheMage on Thu, 03/26/2020 - 05:58

For your first question: It does shoot actual arrows it just textures them

For the second question: you will have to use custom code

Create a bow with the affects you want it to have

Set your entity to be a ranged entity.

Go into the code of the bow and copy code that looks like this (for the player only)

@Override
		public void onCollideWithPlayer(PlayerEntity entity) {
			super.onCollideWithPlayer(entity);
			int x = (int) this.posX;
			int y = (int) this.posY;
			int z = (int) this.posZ;
			World world = this.world;
			{
				java.util.HashMap<String, Object> $_dependencies = new java.util.HashMap<>();
				$_dependencies.put("x", x);
				$_dependencies.put("y", y);
				$_dependencies.put("z", z);
				$_dependencies.put("world", world);
				MCreatorTnTBowBulletHitsBlock.executeProcedure($_dependencies);
			}
		}

Copy that and go into the code of your entity.

You will see something like:

public void attackEntityWithRangedAttack(LivingEntity target, float flval) {
			ArrowCustomEntity entityarrow = new ArrowCustomEntity(arrow, this, this.world);
			double d0 = target.posY + (double) target.getEyeHeight() - 1.1;
			double d1 = target.posX - this.posX;
			double d3 = target.posZ - this.posZ;
			entityarrow.shoot(d1, d0 - entityarrow.posY + (double) MathHelper.sqrt(d1 * d1 + d3 * d3) * 0.2F, d3, 1.6F, 12.0F);
			world.addEntity(entityarrow);
		}

Go onto the last line where the } is and hit enter about 3 times to move it downward.

paste what you copied from the bow code

Lock the item.

This should work, but I am not certain

Thanks,

Shadow

Jump to top Permalink

Well. i tried what you said and McCreator shows compilation errors

this is what my code looks like rn

       public void attackEntityWithRangedAttack(EntityLivingBase target, float flval) {
           EntityArrowCustom entityarrow = new EntityArrowCustom(this.world, this);
           double d0 = target.posY + (double) target.getEyeHeight() - 1.1;
           double d1 = target.posX - this.posX;
           double d3 = target.posZ - this.posZ;
           entityarrow.shoot(d1, d0 - entityarrow.posY + (double) MathHelper.sqrt(d1 * d1 + d3 * d3) * 0.2F, d3, 1.6F, 12.0F);
           this.world.spawnEntity(entityarrow);

       @Override
       protected void arrowHit(EntityLivingBase entity) {
           super.arrowHit(entity);
           entity.setArrowCountInEntity(entity.getArrowCountInEntity() - 1);
           int x = (int) this.posX;
           int y = (int) this.posY;
           int z = (int) this.posZ;
           World world = this.world;
           {
               java.util.HashMap<String, Object> $_dependencies = new java.util.HashMap<>();
               $_dependencies.put("entity", entity);
               MCreatorTestBulletHitsLivingEntity.executeProcedure($_dependencies);
           }
       }

Jump to top Permalink

I think i saw a Tutorial try to search in youtube

Jump to top Permalink

i dont see any tutorial,

and im in fact confused by the lack of a "when entity deals damage" procedure,

i dont know if i have an old version or something but i saw some tutorails that have these options, did they remove it??

Jump to top Permalink