Feat/worldcontroller

libgdx/core/src/com/darrandyford/world/WorldController.java

@@ -0,0 +1,88 @@
+package com.darrandyford.world;
+
+
+/**
+ * Controls the primary loop of the game world. This includes initialization, updates, and destruction.
+ * The primary groupings of control are:
+ * Camera
+ * Renderer
+ * Entities (player, enemies, maps, etc.)
+ * Physics bodies and calculations
+ */
+public class WorldController {
+
+	// Set the TAG for logging purposes
+	private static final String TAG = WorldController.class.getName();
+
+	private float accumulator = 0; // keeps track of physics accumulated time between steps
+	private boolean initRenderState = false;
+
+	public WorldController () {
+		init();
+	}
+
+	/**
+	 * Reset the world to the default/beginning state
+	 */
+	public void reset() {
+		init();
+	}
+
+	/**
+	 * 	This init is used whenever the object needs to be reset without
+	 * 	completely deleting and re-instantiating it.
+	 */
+	private void init () {
+		initLevel();
+		initPhysics();
+	}
+
+	/**
+	 * Update the game world on each loop
+	 * @param deltaTime the amount of time passed between loop cycles in ms
+	 */
+	public void update (float deltaTime) {
+		updatePhysics(deltaTime);
+		doPhysicsStep(deltaTime);
+	}
+
+	/**
+	 * Initialize the game level - what we consider a level to be is TBD
+	 */
+	private void initLevel() {
+	}
+
+	/**
+	 * Initialize the physics system
+	 */
+	private void initPhysics() {
+	}
+
+	/**
+	 * Update the physics world on each cycle
+	 * @param deltaTime time passed in ms between cycles
+	 */
+	private void updatePhysics(float deltaTime) {
+	}
+
+	/**
+	 * Only execute physics interactions at specified intervals. This method dictates what happens when physics
+	 * interactions are to be executed.
+	 * @param deltaTime time passed between cycles in ms
+	 */
+	private void doPhysicsStep(float deltaTime) {
+		// fixed time step
+		// max frame time to avoid spiral of death (on slow devices)
+		double frameTime = Math.min(deltaTime, 0.25f);
+		accumulator += frameTime;
+
+	}
+
+	// Getters
+	public boolean getInitRenderState() { return this.initRenderState; }
+
+	// Setters
+	public void setInitRenderState(boolean state) {
+		this.initRenderState = state;
+	}
+}