/*
 * Pixel Dungeon
 * Copyright (C) 2012-2015 Oleg Dolya
 *
 * Shattered Pixel Dungeon
 * Copyright (C) 2014-2026 Evan Debenham
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>
 */

package com.shatteredpixel.shatteredpixeldungeon.levels.features;

import com.shatteredpixel.shatteredpixeldungeon.Dungeon;
import com.shatteredpixel.shatteredpixeldungeon.levels.Level;
import com.watabou.utils.Bundlable;
import com.watabou.utils.Bundle;
import com.watabou.utils.Point;
import com.watabou.utils.Random;
import com.watabou.utils.Rect;

public class LevelTransition extends Rect implements Bundlable {

	public enum Type {
		SURFACE,
		REGULAR_ENTRANCE,
		REGULAR_EXIT,
		BRANCH_ENTRANCE,
		BRANCH_EXIT;
	}

	public Type type;
	public int destDepth;
	public int destBranch;
	public Type destType;

	public int centerCell;

	//for bundling
	public LevelTransition(){
		super();
	}

	public LevelTransition(Level level, int cell, Type type, int destDepth, int destBranch, Type destType){
		centerCell = cell;
		Point p = level.cellToPoint(cell);
		set(p.x, p.y, p.x, p.y);
		this.type = type;
		this.destDepth = destDepth;
		this.destBranch = destBranch;
		this.destType = destType;
	}

	//gives default values for common transition types
	public LevelTransition(Level level, int cell, Type type){
		centerCell = cell;
		Point p = level.cellToPoint(cell);
		set(p.x, p.y, p.x, p.y);
		this.type = type;
		switch (type){
			case REGULAR_ENTRANCE: default:
				destDepth = Dungeon.depth-1;
				destBranch = Dungeon.branch;
				destType = Type.REGULAR_EXIT;
				break;
			case REGULAR_EXIT:
				destDepth = Dungeon.depth+1;
				destBranch = Dungeon.branch;
				destType = Type.REGULAR_ENTRANCE;
				break;
			case SURFACE:
				destDepth = 0;
				destBranch = 0;
				destType = null;
				break;
		}
	}

	//note that the center cell isn't always the actual center.
	// It is important when game logic needs to pick a specific cell for some action
	// e.g. where to place the hero
	public int cell(){
		return centerCell;
	}

	//Transitions are inclusive to their right and bottom sides
	@Override
	public int width() {
		return super.width()+1;
	}

	@Override
	public int height() {
		return super.height()+1;
	}

	@Override
	public boolean inside(Point p) {
		return p.x >= left && p.x <= right && p.y >= top && p.y <= bottom;
	}

	public boolean inside(int cell){
		return inside(new Point(Dungeon.level.cellToPoint(cell)));
	}

	public Point center() {
		return new Point(
				(left + right) / 2 + (((right - left) % 2) == 1 ? Random.Int( 2 ) : 0),
				(top + bottom) / 2 + (((bottom - top) % 2) == 1 ? Random.Int( 2 ) : 0) );
	}

	public static final String TYPE = "type";
	public static final String DEST_DEPTH = "dest_depth";
	public static final String DEST_BRANCH = "dest_branch";
	public static final String DEST_TYPE = "dest_type";

	@Override
	public void storeInBundle(Bundle bundle) {
		bundle.put( "left", left );
		bundle.put( "top", top );
		bundle.put( "right", right );
		bundle.put( "bottom", bottom );

		bundle.put( "center", centerCell );

		bundle.put(TYPE, type);
		bundle.put(DEST_DEPTH, destDepth);
		bundle.put(DEST_BRANCH, destBranch);
		bundle.put(DEST_TYPE, destType);
	}

	@Override
	public void restoreFromBundle(Bundle bundle) {
		left = bundle.getInt( "left" );
		top = bundle.getInt( "top" );
		right = bundle.getInt( "right" );
		bottom = bundle.getInt( "bottom" );

		centerCell = bundle.getInt( "center" );

		type = bundle.getEnum(TYPE, Type.class);
		destDepth = bundle.getInt(DEST_DEPTH);
		destBranch = bundle.getInt(DEST_BRANCH);
		if (bundle.contains(DEST_TYPE)) destType = bundle.getEnum(DEST_TYPE, Type.class);
	}
}
