Camera.java

package com.lucasdnd.ags.system;

import org.newdawn.slick.GameContainer;

import com.lucasdnd.ags.map.Map;

public class Camera {
	
	private float xOffset = 0;			// X Offset
	private float yOffset = 0;			// Y Offset
	
	private int xMin;		// View Limit
	private int xMax;
	private int yMin;
	private int yMax;
	
	private float cameraSpeed = 1f;			// The speed at which the camera moves
	private int cameraMovingDirection = -1;	// The direction the camera is moving torwards
	public final static int UP = 0;
	public final static int DOWN = 1;
	public final static int LEFT = 2;
	public final static int RIGHT = 3;
	
	public Camera(Map map, int containerWidth, int containerHeight) {
		
		// Update the starting Offset based on the Map's x and y Offsets
		xOffset = map.getxOffset();
		yOffset = map.getyOffset();
		
		// Set the max and min Camera movement limit
		
		// Small Map
		// Right X limit (negative X)
		xMin = 28;
		
		// Left X limit (positive X)
		xMax = 400;
		
		// Bot Y limit (negative Y)
		yMin = -170;
		
		// Top Y limit (positive Y)
		yMax = 50;	
	}
	
	/**
	 * Moves the camera around
	 * @param container
	 * @param map
	 * @param xMovement --> 1 if you want to move the camera x+, -1 if you want to move the camera x-
	 * @param yMovement --> same as above but for y
	 */
	public void updateOffset(GameContainer container, Map map, int delta, int xMovement, int yMovement) {
		
		// Updates the Offset
		xOffset = xOffset + ((xMovement * cameraSpeed) / GameSystem.globalScale);
		yOffset = yOffset + ((yMovement * cameraSpeed) / GameSystem.globalScale);
		
		// Limit the Camera movement
		if(xOffset > xMax) {
			xOffset = xMax;
		} else if(xOffset < xMin) {
			xOffset = xMin;
		}
		
		if(yOffset > yMax) {
			yOffset = yMax;
		} else if(yOffset < yMin) {
			yOffset = yMin;
		}
		
	}
	
	public float getxOffset() {
		return xOffset;
	}

	public void setxOffset(float xOffset) {
		this.xOffset = xOffset;
	}

	public float getyOffset() {
		return yOffset;
	}

	public void setyOffset(float yOffset) {
		this.yOffset = yOffset;
	}

	public int getCameraMovingDirection() {
		return cameraMovingDirection;
	}

	public void setCameraMovingDirection(int cameraMovingDirection) {
		this.cameraMovingDirection = cameraMovingDirection;
	}

	public float getCameraSpeed() {
		return cameraSpeed;
	}

	public void setCameraSpeed(float cameraSpeed) {
		this.cameraSpeed = cameraSpeed;
	}

	public int getxMin() {
		return xMin;
	}

	public void setxMin(int xMin) {
		this.xMin = xMin;
	}

	public int getxMax() {
		return xMax;
	}

	public void setxMax(int xMax) {
		this.xMax = xMax;
	}

	public int getyMin() {
		return yMin;
	}

	public void setyMin(int yMin) {
		this.yMin = yMin;
	}

	public int getyMax() {
		return yMax;
	}

	public void setyMax(int yMax) {
		this.yMax = yMax;
	}
	
}