BlockClickHelper.java

package minefantasy.block.special;

import net.minecraftforge.common.ForgeDirection;

public class BlockClickHelper
{
	/**
	 * Gets the Grid slot in relation to mouse click
	 * @param clickX the area clicked on X (called in blockActivated)
	 * @param clickY the area clicked on Y (called in blockActivated)
	 * @param xBound the x boundry of the block
	 * @param xBound2 the x max boundry of the block
	 * @param yBound the y boundry of the block
	 * @param yBound2 the y max boundry of the block
	 * @param xSlots the slot count x
	 * @param ySlots the slot count y
	 * @param dir the direction the block is facing
	 */
	public static int[] getCoordsFor(float clickX, float clickY, float xBound, float xBound2, float yBound, float yBound2, int xSlots, int ySlots, int dir) 
	{
		if(clickX < xBound || clickX > xBound2 || clickY < yBound || clickY > yBound2)
		{
			return null;
		}
		
		clickX -= xBound;
		clickY -= yBound;
		
		float xMax = xBound2 - xBound;
		float yMax = yBound2 - yBound;
		
		int xSlot = 0;
		int ySlot = 0;
		
		float xSpace = xMax / (float)xSlots;
		float ySpace = yMax / (float)ySlots;
		
		for(int xT = 0; xT < xSlots; xT ++)
		{
			float MinSpace = xSpace * xT;
			float MaxSpace = xSpace * (xT+1);
			if(clickX < MaxSpace && clickX > MinSpace)
			{
				xSlot = xT;
			}
		}
		
		for(int yT = 0; yT < ySlots; yT ++)
		{
			float MinSpace = ySpace * yT;
			float MaxSpace = ySpace * (yT+1);
			if(clickY < MaxSpace && clickY > MinSpace)
			{
				ySlot = yT;
			}
		}
		return translateCoords(xSlot, ySlot, xSlots, ySlots, dir);
	}
	
	/**
	 * Translates the coords on angles (NORTH is default)
	 * @param x the slot x
	 * @param y the slot y
	 * @param maxX the slot count x
	 * @param maxY the slot count y
	 * @param dir the facing direction
	 */
	public static int[] translateCoords(int x, int y, int maxX, int maxY, int direction)
	{
		ForgeDirection dir = FD[direction];
		if(dir == ForgeDirection.SOUTH)
		{
			int newX = (maxX - x - 1);
			int newY = (maxY - y - 1);
			return new int[]{newX, newY};
		}
		
		if(dir == ForgeDirection.EAST)
		{
			int newX = (y);
			int newY = (maxX - x - 1);
			return new int[]{newX, newY};
		}
		if(dir == ForgeDirection.WEST)
		{
			int newY = (x);
			int newX = (maxY - y - 1);
			return new int[]{newX, newY};
		}
		
		return new int[]{x, y};
	}
	public static ForgeDirection[] FD = new ForgeDirection[]{ForgeDirection.SOUTH, ForgeDirection.WEST, ForgeDirection.NORTH, ForgeDirection.EAST};
}