GetGrapplingForces()

void Terraria.Player.GetGrapplingForces ( Vector2 fromPosition, out int? preferredPlayerDirectionToSet, out float preferedPlayerVelocityX, out float preferedPlayerVelocityY )

inlineprivate

Definition at line 21699 of file Player.cs.

    {
        float num = 0f;
        float num2 = 0f;
        preferredPlayerDirectionToSet = null;
        int num3 = 0;
        for (int i = 0; i < grapCount; i++)
        {
            Projectile projectile = Main.projectile[grappling[i]];
            if (projectile.ai[0] != 2f || projectile.position.HasNaNs())
            {
                continue;
            }
            num += projectile.position.X + (float)(projectile.width / 2);
            num2 += projectile.position.Y + (float)(projectile.height / 2);
            num3++;
            if (projectile.type == 446)
            {
                Vector2 vector = new Vector2(controlRight.ToInt() - controlLeft.ToInt(), (float)(controlDown.ToInt() - controlUp.ToInt()) * gravDir);
                if (vector != Vector2.Zero)
                {
                    vector.Normalize();
                }
                vector *= 100f;
                Vector2 vec = Vector2.Normalize(base.Center - projectile.Center + vector);
                if (vec.HasNaNs())
                {
                    vec = -Vector2.UnitY;
                }
                float num4 = 200f;
                num += vec.X * num4;
                num2 += vec.Y * num4;
            }
            else if (projectile.type == 652)
            {
                Vector2 vector2 = new Vector2(controlRight.ToInt() - controlLeft.ToInt(), (float)(controlDown.ToInt() - controlUp.ToInt()) * gravDir).SafeNormalize(Vector2.Zero);
                Vector2 vector3 = projectile.Center - base.Center;
                Vector2 vector4 = vector3.SafeNormalize(Vector2.Zero);
                Vector2 value = Vector2.Zero;
                if (vector2 != Vector2.Zero)
                {
                    value = vector4 * Vector2.Dot(vector4, vector2);
                }
                float num5 = 6f;
                if (Vector2.Dot(value, vector3) < 0f && vector3.Length() >= 600f)
                {
                    num5 = 0f;
                }
                num += 0f - vector3.X + value.X * num5;
                num2 += 0f - vector3.Y + value.Y * num5;
            }
            else if (projectile.type == 865)
            {
                Vector2 vector5 = (projectile.rotation - (float)Math.PI / 2f).ToRotationVector2().SafeNormalize(Vector2.UnitY);
                Vector2 vector6 = -vector5 * 28f;
                num += vector6.X;
                num2 += vector6.Y;
                if (vector5.X != 0f)
                {
                    preferredPlayerDirectionToSet = Math.Sign(vector5.X);
                }
            }
        }
        if (num3 == 0)
        {
            preferedPlayerVelocityX = velocity.X;
            preferedPlayerVelocityY = velocity.Y;
            return;
        }
        float num6 = num / (float)num3;
        float num7 = num2 / (float)num3;
        Vector2 vector7 = fromPosition;
        preferedPlayerVelocityX = num6 - vector7.X;
        preferedPlayerVelocityY = num7 - vector7.Y;
        float num8 = (float)Math.Sqrt(preferedPlayerVelocityX * preferedPlayerVelocityX + preferedPlayerVelocityY * preferedPlayerVelocityY);
        float num9 = 11f;
        if (Main.projectile[grappling[0]].type == 315)
        {
            num9 = 14f;
        }
        if (Main.projectile[grappling[0]].type == 487)
        {
            num9 = 12f;
        }
        if (Main.projectile[grappling[0]].type >= 646 && Main.projectile[grappling[0]].type <= 649)
        {
            num9 = 16f;
        }
        float num10 = num8;
        num10 = ((!(num8 > num9)) ? 1f : (num9 / num8));
        preferedPlayerVelocityX *= num10;
        preferedPlayerVelocityY *= num10;
    }

References Terraria.Projectile.ai, Terraria.Entity.Center, Microsoft.Xna.Framework.Vector2.Dot(), Terraria.Entity.height, Microsoft.Xna.Framework.Vector2.Normalize(), System.Math.PI, Terraria.Entity.position, Terraria.Main.projectile, System.Math.Sign(), System.Math.Sqrt(), Terraria.Projectile.type, Microsoft.Xna.Framework.Vector2.UnitY, System.value, Terraria.Entity.width, and Microsoft.Xna.Framework.Vector2.Zero.