Magnet items (how can i do it?)

[Niphura]

So..i wanted to know how to make an item go to the player if he is close to it. Something like the health pickups in Doom eternal or 2016 after you do a glory kill. I´ve seen mods that have this feature but i don't remember which mods were.

[Jarewill]

Using ZScript you can detect if a player is nearby and make the item move towards the player.
Example code:

---

Code: Select all

Class HealthBonusHover : HealthBonus replaces HealthBonus
{
    Override void Tick()
    { //Tick override gets called every tick
        Super.Tick();
        GlideToPlayer(); //Call the function
    }
    void GlideToPlayer()
    { //Function definition
        For(let i = BlockThingsIterator.Create(self,128); i.Next();)
        { //Iterate through all actors in a 128 unit range
            Actor other = i.thing;
            If(other==self)
            {Continue;} //If the actor is the item, skip
            double distance = Distance3D(other);
            If(distance>128)
            {Continue;} //If it's above the specified distance, skip
            If(other is "PlayerPawn")
            { //If it's a player, continue
                A_Face(other); //Face the player
                VelFromAngle(10.0); //Move towards the player with a speed of 10 units per tick
            }
        }
    }
} 

[Niphura]

Using ZScript you can detect if a player is nearby and make the item move towards the player.
Example code:

---

Code: Select all

Class HealthBonusHover : HealthBonus replaces HealthBonus
{
    Override void Tick()
    { //Tick override gets called every tick
        Super.Tick();
        GlideToPlayer(); //Call the function
    }
    void GlideToPlayer()
    { //Function definition
        For(let i = BlockThingsIterator.Create(self,128); i.Next();)
        { //Iterate through all actors in a 128 unit range
            Actor other = i.thing;
            If(other==self)
            {Continue;} //If the actor is the item, skip
            double distance = Distance3D(other);
            If(distance>128)
            {Continue;} //If it's above the specified distance, skip
            If(other is "PlayerPawn")
            { //If it's a player, continue
                A_Face(other); //Face the player
                VelFromAngle(10.0); //Move towards the player with a speed of 10 units per tick
            }
        }
    }
} 

Sorry i don't know how to use Zscript, i only know how to use decorate. Hmmm could you edit the zscript file inside the .pk3? inside you'll find the armor bonus item and you can use the default doom player, i'll make sure to add you to the credits if i post my mod later this year

the item: https://www.mediafire.com/file/03ulyem7 ... r.pk3/file

[Jarewill]

Here you go.
I edited the item inside ZScript to look and function like your armor pickup.
I also included a MAPINFO file with editor number definition, because that's the only way to assign those numbers in ZScript.

There's just one small problem with this:
The item will only move horizontally and not vertically, but I have no idea how to fix it.
Someone more skilled in trigonometry might be able to help here.

Edit: Forgot to actually include the file.

[Niphura]

Here you go.
I edited the item inside ZScript to look and function like your armor pickup.
I also included a MAPINFO file with editor number definition, because that's the only way to assign those numbers in ZScript.

There's just one small problem with this:
The item will only move horizontally and not vertically, but I have no idea how to fix it.
Someone more skilled in trigonometry might be able to help here.

Edit: Forgot to actually include the file.

Thank you very much! don't worry about the vertically movement

EDIT: hmm i can't find the item on ultimate doom builder to place it somewhere in a map

[Jarewill]

Right, I forgot.
First you will have to include gzdoom.pk3 in UDB.

To do that, first open your map.
In the resource menu as you open the map, you should add a new resource:

Then specify it to be a .pk3 and navigate to your gzdoom.pk3 file:

And lastly make sure to exclude it from the game itself:


Hope this helps.

[Niphura]

Right, I forgot.
First you will have to include gzdoom.pk3 in UDB.

To do that, first open your map.
In the resource menu as you open the map, you should add a new resource:

Then specify it to be a .pk3 and navigate to your gzdoom.pk3 file:

And lastly make sure to exclude it from the game itself:


Hope this helps.

it works thank you very much!

[Leglock]

Using ZScript you can detect if a player is nearby and make the item move towards the player.
Example code:

---

Code: Select all

Class HealthBonusHover : HealthBonus replaces HealthBonus
{
    Override void Tick()
    { //Tick override gets called every tick
        Super.Tick();
        GlideToPlayer(); //Call the function
    }
    void GlideToPlayer()
    { //Function definition
        For(let i = BlockThingsIterator.Create(self,128); i.Next();)
        { //Iterate through all actors in a 128 unit range
            Actor other = i.thing;
            If(other==self)
            {Continue;} //If the actor is the item, skip
            double distance = Distance3D(other);
            If(distance>128)
            {Continue;} //If it's above the specified distance, skip
            If(other is "PlayerPawn")
            { //If it's a player, continue
                A_Face(other); //Face the player
                VelFromAngle(10.0); //Move towards the player with a speed of 10 units per tick
            }
        }
    }
} 

Sorry for the late bump, I´ve been looking for somthing like this as an "universal pick up drops" (Not static items like keys and ammo/health placed in the map, just enemy drops).
I never tried before scripting in Zscript, I know before I jump into this, I should read the tutotials. But I want to ask if this, or a modified version of this script could work as a universal add on for must mods, like nashgore, damnums or ucminimap.

I´m really looking for something like this to cut down unnecesary grind time collecting pick ups in some mods that, otherwise, they are a blast.

[Jarewill]

That can be possible using event handlers and inventory items with custom logic.
Example:

[Leglock]

That can be possible using event handlers and inventory items with custom logic.
Example:

I will check it out this weekend.
Thanks for the fast replay!