/*
    Copyright (C) 2015 creepylava

    This file is part of RotMG Dungeon Generator.

    RotMG Dungeon Generator is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.

*/

using System;
using DungeonGenerator.Dungeon;
using RotMG.Common.Rasterizer;

namespace DungeonGenerator.Templates.PirateCave; 

internal class StartRoom : Room
{
    private readonly int radius;

    public StartRoom(int radius)
    {
        this.radius = radius;
    }

    public override RoomType Type => RoomType.Start;

    public override int Width => radius * 2 + 1;

    public override int Height => radius * 2 + 1;

    public override void Rasterize(BitmapRasterizer<DungeonTile> rasterizer, Random rand)
    {
        var tile = new DungeonTile
        {
            TileType = PirateCaveTemplate.LightSand
        };

        var cX = Pos.X + radius + 0.5;
        var cY = Pos.Y + radius + 0.5;
        var bounds = Bounds;
        var r2 = radius * radius;
        var buf = rasterizer.Bitmap;

        double pR = rand.NextDouble() * (radius - 2), pA = rand.NextDouble() * 2 * Math.PI;
        var pX = (int)(cX + Math.Cos(pR) * pR);
        var pY = (int)(cY + Math.Sin(pR) * pR);

        for (var x = bounds.X; x < bounds.MaxX; x++)
        for (var y = bounds.Y; y < bounds.MaxY; y++)
        {
            if ((x - cX) * (x - cX) + (y - cY) * (y - cY) <= r2)
            {
                buf[x, y] = tile;
                if (rand.NextDouble() > 0.95)
                {
                    buf[x, y].Object = new DungeonObject
                    {
                        ObjectType = PirateCaveTemplate.PalmTree
                    };
                }
            }

            if (x == pX && y == pY)
            {
                buf[x, y].Region = "Spawn";
                buf[x, y].Object = new DungeonObject
                {
                    ObjectType = PirateCaveTemplate.CowardicePortal
                };
            }
        }
    }
}