TryPlacingPortal()

static int Terraria.GameContent.PortalHelper.TryPlacingPortal ( Projectile theBolt, Vector2 velocity, Vector2 theCrashVelocity )

inlinestatic

Definition at line 213 of file PortalHelper.cs.

    {
        Vector2 vector = velocity / velocity.Length();
        Point position = FindCollision(theBolt.position, theBolt.position + velocity + vector * 32f).ToTileCoordinates();
        Tile tile = Main.tile[position.X, position.Y];
        Vector2 vector2 = new Vector2(position.X * 16 + 8, position.Y * 16 + 8);
        if (!WorldGen.SolidOrSlopedTile(tile))
        {
            return -1;
        }
        int num = tile.slope();
        bool flag = tile.halfBrick();
        for (int i = 0; i < (flag ? 2 : EDGES.Length); i++)
        {
            if (Vector2.Dot(EDGES[i], vector) > 0f && FindValidLine(position, (int)EDGES[i].Y, (int)(0f - EDGES[i].X), out var bestPosition))
            {
                vector2 = new Vector2(bestPosition.X * 16 + 8, bestPosition.Y * 16 + 8);
                return AddPortal(theBolt, vector2 - EDGES[i] * (flag ? 0f : 8f), (float)Math.Atan2(EDGES[i].Y, EDGES[i].X) + (float)Math.PI / 2f, (int)theBolt.ai[0], theBolt.direction);
            }
        }
        if (num != 0)
        {
            Vector2 value = SLOPE_EDGES[num - 1];
            if (Vector2.Dot(value, -vector) > 0f && FindValidLine(position, -SLOPE_OFFSETS[num - 1].Y, SLOPE_OFFSETS[num - 1].X, out var bestPosition2))
            {
                vector2 = new Vector2(bestPosition2.X * 16 + 8, bestPosition2.Y * 16 + 8);
                return AddPortal(theBolt, vector2, (float)Math.Atan2(value.Y, value.X) - (float)Math.PI / 2f, (int)theBolt.ai[0], theBolt.direction);
            }
        }
        return -1;
    }

References Terraria.GameContent.PortalHelper.AddPortal(), System.Math.Atan2(), Microsoft.Xna.Framework.Vector2.Dot(), Terraria.GameContent.PortalHelper.EDGES, Terraria.GameContent.PortalHelper.FindCollision(), Terraria.GameContent.PortalHelper.FindValidLine(), Terraria.Tile.halfBrick(), Microsoft.Xna.Framework.Vector2.Length(), System.Math.PI, Terraria.Tile.slope(), Terraria.GameContent.PortalHelper.SLOPE_EDGES, Terraria.GameContent.PortalHelper.SLOPE_OFFSETS, Terraria.WorldGen.SolidOrSlopedTile(), Terraria.Main.tile, System.value, Microsoft.Xna.Framework.Point.X, System.X, Microsoft.Xna.Framework.Point.Y, and System.Y.

Referenced by Terraria.Projectile.HandleMovement().