How should I make this type of text level editor? C#

Questions & Answers
1

example:

level1.txt level2.txt level3.txt

,,,,,,,,,,
,,,,,,,,,,
,,,,,,,,,,
,,,,,,P,,,
,,,,,,,,,,
,,,,,,,,,,
,,,,,~~~,,
,,,,,,,,,,
,,,,,,,,,,
~~~~~~~~~~

private Tile LoadTile(char tileType, int x, int y)
		{
			switch (tileType)
			{
				// Blank space
				case ',':
					//return new Tile(null, TileCollision.Passable);
					// Don't need to do anything.
					return null;

				// Exit
				case 'X':
				case 'Y':
				case 'Z':
					string levelCode = this.mappings[tileType.ToString()];
					this.LoadExit(x, y, tileType, levelCode);
					return null;
				// Gem
				case 'G':
					if (this.LevelType == Game.LevelType.ForestLevel)
					{
						this.LoadGem(x, y, GemType.GoldNugget);
					}
					else
					{
						this.LoadGem(x, y, GemType.Normal);
					}
					return null;

				// Powerup gem
				case 'P':
					this.LoadGem(x, y, GemType.PowerUp);
					return null;
				// Poison gem
				case 'Q':
					this.LoadGem(x, y, GemType.Ablaze);
					return null;
				// Floating platform
				case '-':
					return this.LoadTile(TileType.Platform, x, y);

				case 'U':
					this.LoadPipe(x, y);
					return null;

				// Various enemies
				case 'A':
					this.LoadEnemy(x, y, EnemyType.MonsterA, 1f);
					return null;
				case 'B':
					this.LoadEnemy(x, y, EnemyType.MonsterB, 1f);
					return null;
				case 'C':
					this.LoadEnemy(x, y, EnemyType.MonsterC, 1f);
					return null;
				case 'D':
					this.LoadEnemy(x, y, EnemyType.MonsterD, 1f);
					return null;
				// Mini enemies.
				case 'a':
					this.LoadEnemy(x, y, EnemyType.MonsterA, 0.5f);
					return null;
				case 'b':
					this.LoadEnemy(x, y, EnemyType.MonsterB, 0.5f);
					return null;
				case 'c':
					this.LoadEnemy(x, y, EnemyType.MonsterC, 0.5f);
					return null;
				case 'd':
					this.LoadEnemy(x, y, EnemyType.MonsterD, 0.5f);
					return null;

				case 'K':
					this.LoadBoss(x, y, BossSprite.BossType.KingBaddie);
					return null;
				case 'L':
					this.LoadBoss(x, y, BossSprite.BossType.GhostBaddie);
					return null;
				case 'M':
					this.LoadBoss(x, y, BossSprite.BossType.DeerBoss);
					return null;

				// Platform block
				case '~':
					return this.LoadTile(TileType.BlockB, x, y);     //("BlockB", 2, TileCollision.Platform);

				//// Passable block
				//case ':':
				//    return this.LoadTile(TileType.BlockB, x, y);     //LoadVarietyTile("BlockB", 2, TileCollision.Passable);

				// Player 1 start point
				case '1':
					this.LoadStart(x, y, PlayerType.Esko, this.mainPlayerIndex);
					return null;
				case '2':
					// Only add Glaci if the second player has already entered the game.
					if (GameplayScreen.IsPlayerTwoActive)
					{
						this.LoadStart(x, y, PlayerType.Glaci, GameplayScreen.PlayerTwoControllerIndex.Value);
					}
					else
					{
						this.glaciePosition = new Vector2(x, y);
					}
					this.isMoreFreezeEverything = true;
					return null;
				case '3':
					this.LoadStart(x, y, PlayerType.Fernie, this.mainPlayerIndex);
					return null;
				// Impassable block
				case '#':
					return this.LoadTile(TileType.BlockA, x, y);     //LoadVarietyTile("BlockA", 7, TileCollision.Impassable);

				// Unknown tile type character
				default:
					throw new NotSupportedException(string.Format("Unsupported tile type character '{0}' at position {1}, {2}.", tileType, x, y));
			}
		}

I’m more hung up on the getting of the .txt file, getting the strings into a switch, and then next level transition than the actual x and y and prefabs and other parts of the level build just making note.

2

You’ll want to use TextAsset, which works like any other asset. You could assign it to a field on a script or load it from Resources (which is popular because it can be unloaded when you’re done with it).

Use its text property to get the file contents as a string. Iterate over the string passing each character to the LoadTile() method. For each character passed, x += 1. If the character is a newline, x = 0, y += 1.