Standalone [1.3] tModLoader - A Modding API

Eldrazi · Mar 24, 2016

Piterros990 said:
Alright. Thank you.
[doublepost=1458812256,1458811736][/doublepost]Bow works fine, but I think I messed something with the projectile:

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

namespace EpicModpack.Projectiles
{
public class Stinger : ModProjectile
{
public override void SetDefaults()
{
projectile.name = "Stinger";
projectile.width = 10;
projectile.height = 18;
projectile.friendly = true;
projectile.ranged = true;
projectile.penetrate = 0;
projectile.timeLeft = 600;
projectile.aiStyle = 55;
}

public override void OnHitNPC(NPC target, int damage, float knockback, bool crit)
{
if (Main.rand.Next(10) == 0)
{
target.AddBuff(BuffID.Poisoned, 180, false);
}
}
}
}

What is wrong? The projectile doesn't even show.

Could you also show your item code?

Piterros990 · Mar 24, 2016

Alright:

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

namespace EpicModpack.Items.Weapons
{
public class Stingbow : ModItem
{
public override void SetDefaults()
{
item.name = "Stingbow";
item.damage = 28;
item.ranged = true;
item.width = 18;
item.height = 40;
item.useTime = 24;
item.useAnimation = 20;
item.useStyle = 5;
item.noMelee = true;
item.knockBack = 4;
item.value = 10000;
item.rare = 2;
item.useSound = 5;
item.autoReuse = false;
item.shoot = 10;
item.shootSpeed = 6.7f;
item.useAmmo = 1;
}

public override void AddRecipes()
{
ModRecipe recipe = new ModRecipe(mod);
recipe.AddIngredient(ItemID.Stinger, 12);
recipe.AddIngredient(ItemID.JungleSpores, 8);
recipe.AddTile(TileID.Anvils);
recipe.SetResult(this);
recipe.AddRecipe();
}

public override bool Shoot(Player player, ref Vector2 position, ref float speedX, ref float speedY, ref int type, ref int damage, ref float knockBack)
{
if (type == ProjectileID.WoodenArrowFriendly)
{
type = mod.ProjectileType("Stinger");
}
return true;
}
}
}

Eldrazi · Mar 24, 2016

Allright hang on, it may (probably) be due to the fact you set projectile.penetrate to 0 in the SetDefaults function of your projectile.
If you want it to penetrate infinitely, set projectile.penetrate to -1.

Piterros990 · Mar 24, 2016

Eldrazi said:
Allright hang on, it may (probably) be due to the fact you set projectile.penetrate to 0 in the SetDefaults function of your projectile.
If you want it to penetrate infinitely, set projectile.penetrate to -1.

My idea was that the projectile won't penetrate.

Eldrazi · Mar 24, 2016

Piterros990 said:
My idea was that the projectile won't penetrate.

Just die on the first NPC hit? Then set it to 1.

Piterros990 · Mar 24, 2016

Eldrazi said:
Just die on the first NPC hit? Then set it to 1.

Oh, I see now. Thank you.

Eldrazi · Mar 24, 2016

Piterros990 said:
Oh, I see now. Thank you.

Just out of curiosity: is it working now?

Piterros990 · Mar 24, 2016

Eldrazi said:
Just out of curiosity: is it working now?

Yes, it is. Also, how can I make that projectile won't be affected by gravity?

Eldrazi · Mar 24, 2016

Piterros990 said:
Yes, it is. Also, how can I make that projectile won't be affected by gravity?

Is your current projectile affected by it? Then it's probably something in the vanilla AI.
Probably nothing you can do about it in that case, then.

Piterros990 · Mar 24, 2016

Eldrazi said:
Is your current projectile affected by it? Then it's probably something in the vanilla AI.
Probably nothing you can do about it in that case, then.

It is affected. I was looking through vanilla projectile field values, and bullets and arrows have the same AI. If I can't do anything about it, it's ok. Thank you so much for help.

Jofairden · Mar 24, 2016

Piterros990 said:
It is affected. I was looking through vanilla projectile field values, and bullets and arrows have the same AI. If I can't do anything about it, it's ok. Thank you so much for help.

There is no such thing as for example setting a bool that will stop projectiles being affected by gravity, unfortunately. You'll have to decompile SRC, go to the aiStyle's code and grab whatever code you need from it, and find out how it's programmed. You'll need to look for code changing the X and Y velocities. Realistically speaking, it would make sense that the X velocity reduces over time due to resistance (energy --> heat) and for the Y velocity to go down due to gravity. That means you need to ADD to Y, so it needs to go UP (the other way around). Just remember this: negative X is to the left, negative Y is UP, so positive is the other way around (right, down) This is because it all originates from one starting point: the top left corner of the world.

Piterros990 · Mar 24, 2016

How to add multiple recipes for one item (like Night's Edge, has different recipe for Crimson worlds)?

Eldrazi · Mar 24, 2016

Piterros990 said:
How to add multiple recipes for one item (like Night's Edge, has different recipe for Crimson worlds)?

You just create two recipes, easy as that:

Code:

ModRecipe recipe = new ModRecipe(mod);
// Blabla, recipe stuff.
recipe.AddRecipe();

recipe = new ModRecipe(mod);
// Repeat.
recipe.AddRecipe();

Piterros990 · Mar 24, 2016

Eldrazi said:
You just create two recipes, easy as that:

Code:

ModRecipe recipe = new ModRecipe(mod); // Blabla, recipe stuff. recipe.AddRecipe(); recipe = new ModRecipe(mod); // Repeat. recipe.AddRecipe();

Ok, thank you.

ALmaZss · Mar 24, 2016

Eldrazi said:

Like with any other weapon that shoots a projectile, you just want to assign item.shoot and item.shootSpeed (where shoot should be set to the ID of the projectile and shootSpeed to the speed at which you want to shoot your projectile (try something like 10)).

It's not really an 'animation'. Strange as it may seem, spears are actually projectiles. Luckily the code ain't too long. Take a look at the following:

Code:

public override bool PreAI()
{
    float protractSpeed = 1.5F;
    float retractSpeed = 1.4F;

    Vector2 heldPos = Main.player[projectile.owner].RotatedRelativePoint(Main.player[projectile.owner].MountedCenter, true);
    projectile.direction = Main.player[projectile.owner].direction;
    Main.player[projectile.owner].heldProj = projectile.whoAmI;
    Main.player[projectile.owner].itemTime = Main.player[projectile.owner].itemAnimation;
    projectile.position.X = heldPos.X - (float)(projectile.width / 2);
    projectile.position.Y = heldPos.Y - (float)(projectile.height / 2);
    if (!Main.player[projectile.owner].frozen)
    {
        if (projectile.ai[0] == 0f)
        {
            projectile.ai[0] = 3f;
            projectile.netUpdate = true;
        }
        if (Main.player[projectile.owner].itemAnimation < Main.player[projectile.owner].itemAnimationMax / 3)
        {
            projectile.ai[0] -= retractSpeed;
        }
        else
        {
            projectile.ai[0] += protractSpeed;
        }
    }
    projectile.position += projectile.velocity * projectile.ai[0];
    if (Main.player[projectile.owner].itemAnimation == 0)
    {
        projectile.Kill();
    }
    projectile.rotation = (float)Math.Atan2((double)projectile.velocity.Y, (double)projectile.velocity.X) + 2.355f;
    if (projectile.spriteDirection == -1)
    {
        projectile.rotation -= 1.57f;
    }
    return false;
}

You can change the speed of the spear by modifying the top-most variables. DO NOTE: that spears are drawn different from other projectiles. The 'tip of the spear' should be in the top left corner of your sprite. The following drawing code would make your spear draw properly then:

Code:

public override bool PreDraw()
{
    Vector2 zero = Vector2.Zero;
    SpriteEffects effects1 = SpriteEffects.None;
    if (projectile.spriteDirection == -1)
    {
        zero.X = (float)Main.projectileTexture[projectile.type].Width;
        effects1 = SpriteEffects.FlipHorizontally;
    }
    Main.spriteBatch.Draw(Main.projectileTexture[projectile.type], new Vector2(projectile.position.X - Main.screenPosition.X + (float)(projectile.width / 2), projectile.position.Y - Main.screenPosition.Y + (float)(projectile.height / 2) + projectile.gfxOffY), new Microsoft.Xna.Framework.Rectangle?(new Microsoft.Xna.Framework.Rectangle(0, 0, Main.projectileTexture[projectile.type].Width, Main.projectileTexture[projectile.type].Height)), projectile.GetAlpha(lightColor), projectile.rotation, zero, projectile.scale, effects1, 0.0f);
    return false;
}

The following is how the dusts/gores are spawned:

Code:

for (int i = 0; i < 10; i ++)
{
    Dust.NewDust(projectile.position, projectile.width, projectile.height, 57, projectile.velocity.X * 0.1f, projectile.velocity.Y * 0.1f, 150, default(Color), 1.2f);
}
for (int j = 0; j < 3; j ++)
{
    Gore.NewGore(projectile.position, new Vector2(projectile.velocity.X * 0.05f, projectile.velocity.Y * 0.05f), Main.rand.Next(16, 18), 1f);
}

Thank you, but there is a problem I want to make sword to shoot chaos balls, so how can I make it to shoot NPC?

Eldrazi · Mar 24, 2016

ALmaZss said:
Thank you, but there is a problem I want to make sword to shoot chaos balls, so how can I make it to shoot NPC?

You'll want to override the Shoot function of your ModItem and spawn the NPC manually:

Code:

public override bool Shoot(Player player, ref Vector2 position, ref float speedX, ref float speedY, ref int type, ref int damage, ref float knockBack)
{
     int newNPC = NPC.NewNPC(position.X, position.Y, NPCID.ChaosBall);
     Main.npc[newNPC].velocity = new Vector2(speedX, speedY);
    return false;
}

This is untested, so not sure if it will work (since the ChaosBall is originally a hostile NPC).

ALmaZss · Mar 24, 2016

:c

Code:

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

namespace NopeMod.Items.Weapons.Melee
{
    public class ChaosSword : ModItem
    {
        public override void SetDefaults()
        {
            item.name = "Chaos Sword";
            item.damage = 15;
            item.melee = true;
            item.width = 52;
            item.height = 52;
            item.toolTip = "Sword of chaos.";
            item.useTime = 40;
            item.useAnimation = 40;
            item.useStyle = 1;
            item.knockBack = 4;
            item.value = 00001000;
            item.rare = 2;
            item.useSound = 1;
            item.autoReuse = false;
            item.shoot = 14;
            item.shootSpeed = 10;
        }
               
            public override bool Shoot(Player player, ref Vector2 position, ref float speedX, ref float speedY, ref int type, ref int damage, ref float knockBack)
                {
                    int newNPC = NPC.NewNPC(position.X, position.Y, NPCID.ChaosBall);
                    Main.npc[newNPC].velocity = new Vector2(speedX, speedY);
                    return false;
                }


        public override void AddRecipes()
        {
            ModRecipe recipe = new ModRecipe(mod);
            recipe.AddIngredient(ItemID.DirtBlock, 1);
            recipe.SetResult(this);
            recipe.AddRecipe();
        }
    }
}

Eldrazi · Mar 24, 2016

ALmaZss said:

:c

Code:

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

namespace NopeMod.Items.Weapons.Melee
{
    public class ChaosSword : ModItem
    {
        public override void SetDefaults()
        {
            item.name = "Chaos Sword";
            item.damage = 15;
            item.melee = true;
            item.width = 52;
            item.height = 52;
            item.toolTip = "Sword of chaos.";
            item.useTime = 40;
            item.useAnimation = 40;
            item.useStyle = 1;
            item.knockBack = 4;
            item.value = 00001000;
            item.rare = 2;
            item.useSound = 1;
            item.autoReuse = false;
            item.shoot = 14;
            item.shootSpeed = 10;
        }
              
            public override bool Shoot(Player player, ref Vector2 position, ref float speedX, ref float speedY, ref int type, ref int damage, ref float knockBack)
                {
                    int newNPC = NPC.NewNPC(position.X, position.Y, NPCID.ChaosBall);
                    Main.npc[newNPC].velocity = new Vector2(speedX, speedY);
                    return false;
                }


        public override void AddRecipes()
        {
            ModRecipe recipe = new ModRecipe(mod);
            recipe.AddIngredient(ItemID.DirtBlock, 1);
            recipe.SetResult(this);
            recipe.AddRecipe();
        }
    }
}

My bad:
int newNPC = NPC.NewNPC((int)position.X, (int)position.Y, NPCID.ChaosBall);

Piterros990 · Mar 24, 2016

What are the armor and accessories attributes (for example player.meeleDamage *= ... etc.) and how to add them into armor?

ALmaZss · Mar 24, 2016

Eldrazi said:
My bad:
int newNPC = NPC.NewNPC((int)position.X, (int)position.Y, NPCID.ChaosBall);

Yeah, that works, but it just bashes into me when spawns and disappears

Standalone [1.3] tModLoader - A Modding API

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