Story #3 Add automatic generation of testScene

- Modified prefabs

The generated map is a square with 3 platforms
The player is automaticaly instanciated at a currently hardcoded spawn location
The collisions are handled with BoxCollider2D

An additional saveScene function as been added. It allows to store all the
generated scene into a new file. It is then possible to reload the
specific scene into unity.

Assets/Scripts/ProceduralGeneration/TestSceneGenerator.cs

@@ -0,0 +1,87 @@
+using UnityEngine;
+using UnityEditor;
+using System.Collections;
+
+public class TestSceneGenerator : MonoBehaviour {
+
+	[Tooltip("Put here Player Prefab ! ")]
+	public Transform player;
+	[Tooltip("Put here Player Camera Prefab ! ")]
+	public Transform playerCamera;
+	[Tooltip("Put here Wall Prefab ! ")]
+	public Transform wall;
+
+	private Transform environment; 				// Stores the roo object for the environment
+
+	// Use this for initialization
+	void Start () {
+
+		/*	Temporary hard coded parameters	*/
+		int width = 100;
+		int height = 40;
+		Vector2 spawnPosition = new Vector2 (10, 2);
+
+		/*	Create the root environment transform which will contain all the walls	*/
+		GameObject obj = new GameObject ("Environment");
+		environment = obj.GetComponent<Transform> ();
+
+		/*	Generate the scene	*/
+		generateSquare (width, height, Vector2.zero);
+		generatePlatform (10, new Vector2(10, 20));
+		generatePlatform (10, new Vector2(25, 10));
+		generatePlatform (30, new Vector2(50, 25));
+
+		/*	Instantiate the player	*/
+		spawnPlayer (spawnPosition);
+
+		/*	Save the scene to a file	*/
+		//saveGeneratedScene ("./Assets/Scene/GeneratedScene.unity");
+	}
+
+	/**
+	 * Generate a bordered square (not filled) beginning at position
+	 */
+	private void generateSquare(int width, int height, Vector2 position) {
+
+		for (int i = 0; i <= width; i++) {
+			for (int j = 0; j <= height; j++) {
+				if(i == 0 || i == width || j == 0 || j == height) {
+
+					Transform wallInstance = (Transform) Instantiate(wall, new Vector3(i + position.x, j + position.y, 0), Quaternion.identity);
+					wallInstance.SetParent(environment);
+				}
+			}
+		}
+	}
+
+	/**
+	 * Generate Horizontal platform beginning at position
+	 */ 
+	private void generatePlatform(int width, Vector2 position) {
+
+		for (int i = 0; i <= width; i++) {
+			Transform wallInstance = (Transform) Instantiate(wall, new Vector3(i + position.x, position.y, 0), Quaternion.identity);
+			wallInstance.SetParent(environment);
+		}
+	}
+
+	/**
+	 * Instantiate the player and camera at given spawn position
+	 */ 
+	private void spawnPlayer(Vector2 spawnPosition) {
+		Transform playerInstance = (Transform) Instantiate (player, new Vector3 (spawnPosition.x, spawnPosition.y, 0), Quaternion.identity);
+		Transform playerCameraInstance = (Transform) Instantiate (playerCamera, new Vector3 (spawnPosition.x, spawnPosition.y, playerCamera.position.z), Quaternion.identity);
+
+		playerCameraInstance.SetParent (playerInstance);
+	}
+
+	/**
+	 * Save the current scene to a scene file
+	 * Stores all previously instantiated GameObject
+	 */
+	private void saveGeneratedScene(string path) {
+		// path example : "./Assets/Scene/test.unity"
+		EditorApplication.SaveScene (path);
+	}
+}
+