GuiCharger

package me.onVoid.helpfuladdons.charger;

import java.util.ArrayList;
import java.util.List;

import org.lwjgl.opengl.GL11;

import me.onVoid.helpfuladdons.HelpfulAddons;
import me.onVoid.helpfuladdons.References;
import net.minecraft.client.Minecraft;
import net.minecraft.client.gui.inventory.GuiContainer;
import net.minecraft.client.resources.I18n;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.entity.player.InventoryPlayer;
import net.minecraft.item.ItemStack;
import net.minecraft.util.ResourceLocation;

public class GuiCharger extends GuiContainer {

    public static int chargeProgress = 0;

    public static final ResourceLocation guiImg = new ResourceLocation(References.MODID + ":" + "textures/gui/multichargergui.png");

    public ChargerTileEntity charger;

    public GuiCharger(InventoryPlayer pi, ChargerTileEntity ent) {
        super(new ContainerCharger(pi, ent));

        this.charger = ent;

        this.xSize = 176;
        this.ySize = 166;
    }



    @Override
    protected void drawGuiContainerBackgroundLayer(float arg0, int mouseX, int mouseY) {
        GL11.glColor4f(1F, 1F, 1F, 1F);
        Minecraft.getMinecraft().getTextureManager().bindTexture(guiImg);
        drawTexturedModalRect(guiLeft, guiTop, 0,0, xSize, ySize);
        if (ChargerTileEntity.storage.getEnergyStored() > 0){
            int le = ChargerTileEntity.storage.getMaxEnergyStored() / 40;
            HelpfulAddons.amountOutOfForty = ChargerTileEntity.storage.getEnergyStored() / le;
            drawTexturedModalRect(guiLeft + 10, guiTop + 9 + (40 - Math.round(HelpfulAddons.amountOutOfForty)), 176, 0, 13, Math.round(HelpfulAddons.amountOutOfForty));
        }
    }

    public void drawGuiContainerForegroundLayer(int mouseX, int mouseY){
        GL11.glColor4f(1, 1, 1, 1);
        String name = this.charger.hasCustomInventoryName() ? this.charger.getInventoryName() :
            I18n.format(this.charger.getInventoryName(), new Object[0]);

        this.fontRendererObj.drawString(name, this.xSize / 2 - this.fontRendererObj.getStringWidth(name) / 2, 6, 4210752);
        this.fontRendererObj.drawString(I18n.format("container.inventory", new Object[0]), 8, this.ySize - 96 + 2, 4210752);
        drawToolTips(mouseX, mouseY);
    }

    public void drawToolTips(int mouseX, int mouseY) {
        int boxX = guiLeft + 10; //These are just like the center of the screen.
        int boxY = guiTop + 9; //You make these in order to get a starting point on where to check (With these, it would be the top left of your GUI)

        int defaultX = 12; //These are like the boxes of the area to check.
        int defaultY = 40; //So, if you're rendering an Item to hover over, it would be 16x16.

        //This checks if the mouse is in the correct position on screen. You can add and subtract from boxX and Y to determine where to be.
        if(mouseX > boxX && mouseX < boxX + defaultX && mouseY > boxY && mouseY < boxY + defaultY) {
                           List list = new ArrayList(); //Just the list of text to be added. It is just like the addInformation method now. :P
                           list.add(ChargerTileEntity.storage.getEnergyStored() + " / " + ChargerTileEntity.storage.getMaxEnergyStored() + " RF"); //Each time you add something, it's gonna be a new line in the tooltip.
                           this.drawHoveringText(list, mouseX - guiLeft, mouseY - guiTop, fontRendererObj);
        }
    }

}