tModLoader Official tModLoader Help Thread

Snrasha · Jul 14, 2016

Marcin JOT.PE said:
can some one help me with use a post draw method for a buff that work like medusa buff

http://forums.terraria.org/index.php?threads/1-3-tmodloader-a-modding-api.23726/page-582

This guys have same problems and i have answer.

pat1231 said:
im back here with questions for two things
1. can I make it, that a weapon makes more damage on the third succsesive hit?
2. can I make it, that a weapon hurts the player whenever you hit an enemy?

1)
This is simple, you create a variable private int value=0;
Then, maybe:

Code:

        public override bool UseItem(Player player)
        {
            value++;
            if(value==1)
            item.damage*=2
            if(value==2)
            item.damage*=2;
            if(value==3){
             value=0;item.damage/=4;
            }
           //Or value++; here.
            return base.UseItem(player);
        }

This thing probably do not work correctly , sorry< (it work, but, probably not correctly)
This thing is better, but you need hit the ennemi:

private int value = 0;
public override void ModifyHitNPC(Player player, NPC target, ref int damage, ref float knockBack, ref bool crit)
{

if (value == 1) damage= (int)(damage*1.2f);
if (value == 2) damage = (int)(damage * 1.6f);
if (value == 3) value = 0;
value++;

base.ModifyHitNPC(player, target, ref damage, ref knockBack, ref crit);
}

2) More simple: You use this method:

Code:

        public override void OnHitNPC(Player player, NPC target, int damage, float knockBack, bool crit)
        {
               int spike = (int)Math.Floor((double)(damage / 100));
                 player.Hurt(spike, target.direction);
            base.OnHitNPC(player, target, damage, knockBack, crit);
        }

pat1231 · Jul 14, 2016

sorry for being dumb but i dont have a clue where to put them. when I tried it by myself to put them in, the second even crashed the game ^^'

Edit: I only wanted to do it so i have to hit the enemy to lose hp

Snrasha · Jul 14, 2016

You have put that in your item weapon, no? This is a crash of terraria or you have a log?

You have maybe forgot a thing here:

Code:

using System;
using Microsoft.Xna.Framework;
using Terraria;
using Terraria.ID;
using Terraria.ModLoader;

pat1231 · Jul 14, 2016

Snrasha said:
You have put that in your item weapon

I know but I dont know on which line

Edit: ok i got it by myself thank you

Fabsol · Jul 15, 2016

Hello again!

I'm trying to make an armor piece that inflicts shadowflame on enemy NPC hits (similar to the Magma Stone).

Would I do something like this?

Code:

public override void UpdateEquip(Player player)
 {
 player.moveSpeed += 0.15f;
 if (Main.rand.Next(4) == 0)
 {
 Main.npc[i].AddBuff(153, 360, false);
 }
 else if (Main.rand.Next(2) == 0)
 {
 Main.npc[i].AddBuff(153, 240, false);
 }
 else
 {
 Main.npc[i].AddBuff(153, 120, false);
 }
 Item item = player.inventory[player.selectedItem];
 if (item.melee && !item.noMelee && !item.noUseGraphic && Main.rand.Next(3) != 0)
 {
 int num280 = Dust.NewDust(new Vector2((float)r2.X, (float)r2.Y), r2.Width, r2.Height, 27, player.velocity.X * 0.2f + (float)(player.direction * 3), player.velocity.Y * 0.2f, 100, default(Color), 2.5f);
 Main.dust[num280].noGravity = true;
 Dust expr_D7B2_cp_0 = Main.dust[num280];
 expr_D7B2_cp_0.velocity.X = expr_D7B2_cp_0.velocity.X * 2f;
 Dust expr_D7D2_cp_0 = Main.dust[num280];
 expr_D7D2_cp_0.velocity.Y = expr_D7D2_cp_0.velocity.Y * 2f;
 }
 }

--Elias-- · Jul 15, 2016

Would Main.rand.Next(0)==0) make a 100% chance not to consume ammo?
*Edit Is there a way for the setbonus to be Not Consume ITEMS instead of Ammo?

Pendragon · Jul 15, 2016

Hello Guys I have a Problem and I could really need your Help.

My Problem is following:
I Cloned the Vampire Knives with "item.CloneDefaults(ItemID.VampireKnives);" But the cloned item only "Throws" 1 Projectile.
What should I do? I can Post the file if Needed.

jopojelly · Jul 15, 2016

Pendragon said:
Hello Guys I have a Problem and I could really need your Help.

My Problem is following:
I Cloned the Vampire Knives with "item.CloneDefaults(ItemID.VampireKnives);" But the cloned item only "Throws" 1 Projectile.
What should I do? I can Post the file if Needed.

Cloning an items just clones the properties, nothing else. In this case, the Shoot method in vanilla randomly chooses to shoot 3,4, or 5 projectiles. You'll have to do the same in your Shoot method. See the commented examples in ExampleGun.
[doublepost=1468560895,1468560721][/doublepost]

--Elias-- said:
Would Main.rand.Next(0)==0) make a 100% chance not to consume ammo?
*Edit Is there a way for the setbonus to be Not Consume ITEMS instead of Ammo?

"if(Main.rand.Next(0)==0)" will always be true. Might as well just say "return true" or whatever.

GlobalItem has a ConsumeItem hook, so if you have a ModPlayer variable, you can check that to return false....You'll probably want to limit the scope to certain items.

--Elias-- · Jul 15, 2016

jopojelly said:
Cloning an items just clones the properties, nothing else. In this case, the Shoot method in vanilla randomly chooses to shoot 3,4, or 5 projectiles. You'll have to do the same in your Shoot method. See the commented examples in ExampleGun.
[doublepost=1468560895,1468560721][/doublepost]
"if(Main.rand.Next(0)==0)" will always be true. Might as well just say "return true" or whatever.

GlobalItem has a ConsumeItem hook, so if you have a ModPlayer variable, you can check that to return false....You'll probably want to limit the scope to certain items.

So I put this in my ModPlayer cs file :

public override bool ConsumeItem (Item item, Player player)
{
if (this.SetBonus && item.thrown)
return false;

else
return base.ConsumeItem(item, player);
}

It says "no suitable method found to override. Is there something wrong?

*Edit Just realized that it had to be in the global Item and got it to work! Thanks!

Snrasha · Jul 15, 2016

MountainDrew said:

Hello again!

I'm trying to make an armor piece that inflicts shadowflame on enemy NPC hits (similar to the Magma Stone).

Would I do something like this?

Code:

public override void UpdateEquip(Player player)
{
player.moveSpeed += 0.15f;
if (Main.rand.Next(4) == 0)
{
Main.npc[i].AddBuff(153, 360, false);
}
else if (Main.rand.Next(2) == 0)
{
Main.npc[i].AddBuff(153, 240, false);
}
else
{
Main.npc[i].AddBuff(153, 120, false);
}
Item item = player.inventory[player.selectedItem];
if (item.melee && !item.noMelee && !item.noUseGraphic && Main.rand.Next(3) != 0)
{
int num280 = Dust.NewDust(new Vector2((float)r2.X, (float)r2.Y), r2.Width, r2.Height, 27, player.velocity.X * 0.2f + (float)(player.direction * 3), player.velocity.Y * 0.2f, 100, default(Color), 2.5f);
Main.dust[num280].noGravity = true;
Dust expr_D7B2_cp_0 = Main.dust[num280];
expr_D7B2_cp_0.velocity.X = expr_D7B2_cp_0.velocity.X * 2f;
Dust expr_D7D2_cp_0 = Main.dust[num280];
expr_D7D2_cp_0.velocity.Y = expr_D7D2_cp_0.velocity.Y * 2f;
}
}

You have try in modplayer?
public override void MeleeEffects(Item item, Rectangle hitbox)
{
if(setbonus) {Dust.....}
base.MeleeEffects(item, hitbox);
}

Fabsol · Jul 15, 2016

Snrasha said:
You have try in modplayer?
public override void MeleeEffects(Item item, Rectangle hitbox)
{
if(setbonus) {Dust.....}
base.MeleeEffects(item, hitbox);
}

Derp. Shoulda tried that first, thank you

Jofairden · Jul 15, 2016

--Elias-- said:
How can I make a projectile that starts off slow, then speeds up? Is this a certain AI style I have to use? Or is it with the projectile's velocity?

Afaik, the Demon Scythe speeds up but starts slowly. You could look into its AI and tweak it.

MountainDrew said:

Hello again!

I'm trying to make an armor piece that inflicts shadowflame on enemy NPC hits (similar to the Magma Stone).

Would I do something like this?

Code:

public override void UpdateEquip(Player player)
{
player.moveSpeed += 0.15f;
if (Main.rand.Next(4) == 0)
{
Main.npc[i].AddBuff(153, 360, false);
}
else if (Main.rand.Next(2) == 0)
{
Main.npc[i].AddBuff(153, 240, false);
}
else
{
Main.npc[i].AddBuff(153, 120, false);
}
Item item = player.inventory[player.selectedItem];
if (item.melee && !item.noMelee && !item.noUseGraphic && Main.rand.Next(3) != 0)
{
int num280 = Dust.NewDust(new Vector2((float)r2.X, (float)r2.Y), r2.Width, r2.Height, 27, player.velocity.X * 0.2f + (float)(player.direction * 3), player.velocity.Y * 0.2f, 100, default(Color), 2.5f);
Main.dust[num280].noGravity = true;
Dust expr_D7B2_cp_0 = Main.dust[num280];
expr_D7B2_cp_0.velocity.X = expr_D7B2_cp_0.velocity.X * 2f;
Dust expr_D7D2_cp_0 = Main.dust[num280];
expr_D7D2_cp_0.velocity.Y = expr_D7D2_cp_0.velocity.Y * 2f;
}
}

I'm not sure what you're trying to do here. If you want to add a (de)buff upon hitting an NPC, you can use the OnHitNPC hook.
[doublepost=1468603222,1468603077][/doublepost]

Marcin JOT.PE said:
Can someone explain me how to use
TooltipLine
1. public readonly string mod
2. public readonly string Name

TooltipLine is used in ModifyTooltips(List<TooltipLine> tooltips) for custom tooltips.

Pendragon · Jul 15, 2016

@Gorateron How can you look into the data of a Vanilla object? It seems that I've missed that.

Jofairden · Jul 15, 2016

Pendragon said:
@Gorateron How can you look into the data of a Vanilla object? It seems that I've missed that.

What do you mean with data of a vanilla object? Be more specific.

Pendragon · Jul 15, 2016

Gorateron said:
What do you mean with data of a vanilla object? Be more specific.

@Gorateron like the AI of the Demon Scythe Projectile you mentioned or the shoot Methode of the Vampire Knives

Ivysaur · Jul 15, 2016

Gorateron said:
What do you mean with data of a vanilla object? Be more specific.

He presumably wants to see the source code of Terraria.

Pendragon said:
@Gorateron How can you look into the data of a Vanilla object? It seems that I've missed that.

Try ILSpy
http://ilspy.net/

Pendragon · Jul 15, 2016

Ivysaur said:
Try ILSpy
http://ilspy.net/

Thats might be it, but how do I download it?

Jofairden · Jul 15, 2016

Pendragon said:
@Gorateron like the AI of the Demon Scythe Projectile you mentioned or the shoot Methode of the Vampire Knives

Ivysaur said:
He presumably wants to see the source code of Terraria.

Try ILSpy
http://ilspy.net/

Pendragon said:
Thats might be it, but how do I download it?

Aaah yes. You can look into the sourcecode by decompiling Terraria.exe, and thus you will need a decompiler. ILSpy is one of the best, and it's free. You can download it via the website ilspy.net You will want to look in Terraria.Terraria.Projectile.VanillaAI()

Fabsol · Jul 15, 2016

Gorateron said:
Afaik, the Demon Scythe speeds up but starts slowly. You could look into its AI and tweak it.

I'm not sure what you're trying to do here. If you want to add a (de)buff upon hitting an NPC, you can use the OnHitNPC hook.
[doublepost=1468603222,1468603077][/doublepost]
TooltipLine is used in ModifyTooltips(List<TooltipLine> tooltips) for custom tooltips.

Sorry, I fixed it. I just made a custom buff called "dsSetBonus", set a static bool called that to false in my main player class. Then I just put CalamityPlayer.dsSetBonus = true; in the set bonus for the armor set.

The set bonus causes the shadowflame debuff on enemy hits, demon scythes and shadowbeams to rain from the sky, and causes the armor wearer to emit shadowflame particles when they move.

It all works now

Ivysaur · Jul 15, 2016

How can i manually animate a projectile? I have multiple animation frames in the texture, but how do i switch between them?

tModLoader Official tModLoader Help Thread

Terrarian

Spazmatism

Terrarian

Spazmatism

The Destroyer

Pixel Pirate

Official Terrarian

Retinazer

Pixel Pirate

Terrarian

The Destroyer

Duke Fishron

Official Terrarian

Duke Fishron

Official Terrarian

Official Terrarian

Official Terrarian

Duke Fishron

The Destroyer

Official Terrarian