Episode 04

Episode 04/MapGenerator.cs

@@ -0,0 +1,121 @@
+using UnityEngine;
+using System.Collections;
+using System;
+
+public class MapGenerator : MonoBehaviour {
+
+	public int width;
+	public int height;
+
+	public string seed;
+	public bool useRandomSeed;
+
+	[Range(0,100)]
+	public int randomFillPercent;
+
+	int[,] map;
+
+	void Start() {
+		GenerateMap();
+	}
+
+	void Update() {
+		if (Input.GetMouseButtonDown(0)) {
+			GenerateMap();
+		}
+	}
+
+	void GenerateMap() {
+		map = new int[width,height];
+		RandomFillMap();
+
+		for (int i = 0; i < 5; i ++) {
+			SmoothMap();
+		}
+
+		int borderSize = 1;
+		int[,] borderedMap = new int[width + borderSize * 2,height + borderSize * 2];
+
+		for (int x = 0; x < borderedMap.GetLength(0); x ++) {
+			for (int y = 0; y < borderedMap.GetLength(1); y ++) {
+				if (x >= borderSize && x < width + borderSize && y >= borderSize && y < height + borderSize) {
+					borderedMap[x,y] = map[x-borderSize,y-borderSize];
+				}
+				else {
+					borderedMap[x,y] =1;
+				}
+			}
+		}
+
+		MeshGenerator meshGen = GetComponent<MeshGenerator>();
+		meshGen.GenerateMesh(borderedMap, 1);
+	}
+
+
+	void RandomFillMap() {
+		if (useRandomSeed) {
+			seed = Time.time.ToString();
+		}
+
+		System.Random pseudoRandom = new System.Random(seed.GetHashCode());
+
+		for (int x = 0; x < width; x ++) {
+			for (int y = 0; y < height; y ++) {
+				if (x == 0 || x == width-1 || y == 0 || y == height -1) {
+					map[x,y] = 1;
+				}
+				else {
+					map[x,y] = (pseudoRandom.Next(0,100) < randomFillPercent)? 1: 0;
+				}
+			}
+		}
+	}
+
+	void SmoothMap() {
+		for (int x = 0; x < width; x ++) {
+			for (int y = 0; y < height; y ++) {
+				int neighbourWallTiles = GetSurroundingWallCount(x,y);
+
+				if (neighbourWallTiles > 4)
+					map[x,y] = 1;
+				else if (neighbourWallTiles < 4)
+					map[x,y] = 0;
+
+			}
+		}
+	}
+
+	int GetSurroundingWallCount(int gridX, int gridY) {
+		int wallCount = 0;
+		for (int neighbourX = gridX - 1; neighbourX <= gridX + 1; neighbourX ++) {
+			for (int neighbourY = gridY - 1; neighbourY <= gridY + 1; neighbourY ++) {
+				if (neighbourX >= 0 && neighbourX < width && neighbourY >= 0 && neighbourY < height) {
+					if (neighbourX != gridX || neighbourY != gridY) {
+						wallCount += map[neighbourX,neighbourY];
+					}
+				}
+				else {
+					wallCount ++;
+				}
+			}
+		}
+
+		return wallCount;
+	}
+
+
+	void OnDrawGizmos() {
+		/*
+		if (map != null) {
+			for (int x = 0; x < width; x ++) {
+				for (int y = 0; y < height; y ++) {
+					Gizmos.color = (map[x,y] == 1)?Color.black:Color.white;
+					Vector3 pos = new Vector3(-width/2 + x + .5f,0, -height/2 + y+.5f);
+					Gizmos.DrawCube(pos,Vector3.one);
+				}
+			}
+		}
+		*/
+	}
+
+}