GuiHP.java

package uk.co.wehavecookies56.kk.client.gui;

import org.lwjgl.opengl.GL11;

import net.minecraft.client.Minecraft;
import net.minecraft.client.gui.GuiScreen;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.util.ResourceLocation;
import net.minecraftforge.client.event.RenderGameOverlayEvent;
import net.minecraftforge.client.event.RenderGameOverlayEvent.ElementType;
import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
import uk.co.wehavecookies56.kk.common.capability.ModCapabilities;
import uk.co.wehavecookies56.kk.common.core.handler.ConfigHandler;
import uk.co.wehavecookies56.kk.common.lib.Constants;
import uk.co.wehavecookies56.kk.common.lib.Reference;

public class GuiHP extends GuiScreen {

	int guiWidth = 173;
	int hpBarWidth;
	int guiHeight = 10;
	int noborderguiwidth = 171;

	public void drawHPBarBack (int posX, int posY, int width, float scale) {
		Minecraft.getMinecraft().renderEngine.bindTexture(new ResourceLocation(Reference.MODID, "textures/gui/hpbar.png"));
		GL11.glPushMatrix();
		{
			GL11.glPushMatrix();
			{
				GL11.glTranslatef(scale * posX, scale * posY, 0);
				GL11.glScalef(scale, scale, 0);
				drawTexturedModalRect(0, 0, 0, 0, 2, 10);
			}
			GL11.glPopMatrix();

			GL11.glPushMatrix();
			{
				GL11.glTranslatef((posX + 2) * scale, posY * scale, 0);
				GL11.glScalef(width, scale, 0);
				drawTexturedModalRect(0, 0, 2, 0, 1, 10);
			}
			GL11.glPopMatrix();

			GL11.glPushMatrix();
			{
				GL11.glTranslatef((posX + 2) * scale + width, scale * posY, 0);
				GL11.glScalef(scale, scale, 0);
				drawTexturedModalRect(0, 0, 3, 0, 2, 10);
			}
			GL11.glPopMatrix();
		}
		GL11.glPopMatrix();

	}

	public void drawHPBarTop (int posX, int posY, int width, float scale) {
		Minecraft.getMinecraft().renderEngine.bindTexture(new ResourceLocation(Reference.MODID, "textures/gui/hpbar.png"));
		GL11.glPushMatrix();
		{
			GL11.glPushMatrix();
			{
				GL11.glTranslatef(scale * (posX + 2), scale * (posY + 2), 0);
				GL11.glScalef(scale, scale, 0);
				drawTexturedModalRect(0, 0, 2, 12, 2, 6);
			}
			GL11.glPopMatrix();

			GL11.glPushMatrix();
			{
				GL11.glTranslatef((posX + 4) * scale, (posY + 2) * scale, 0);
				GL11.glScalef(width, scale, 0);
				drawTexturedModalRect(0, 0, 3, 12, 1, 6);
			}
			GL11.glPopMatrix();

			GL11.glPushMatrix();
			{
				GL11.glTranslatef((posX + 4) * scale + width, scale * (posY + 2), 0);
				GL11.glScalef(scale, scale, 0);
				drawTexturedModalRect(0, 0, 4, 12, 2, 6);
			}
			GL11.glPopMatrix();
		}
		GL11.glPopMatrix();

	}

	public void drawHPBarTopRed (int posX, int posY, int width, float scale) {
		Minecraft.getMinecraft().renderEngine.bindTexture(new ResourceLocation(Reference.MODID, "textures/gui/hpbar.png"));
		GL11.glPushMatrix();
		{
			GL11.glPushMatrix();
			{
				GL11.glTranslatef(scale * (posX + 2), scale * (posY + 2), 0);
				GL11.glScalef(scale, scale, 0);
				drawTexturedModalRect(0, 0, 2, 22, 2, 6);
			}
			GL11.glPopMatrix();

			GL11.glPushMatrix();
			{
				GL11.glTranslatef((posX + 4) * scale, (posY + 2) * scale, 0);
				GL11.glScalef(width, scale, 0);
				drawTexturedModalRect(0, 0, 3, 22, 1, 6);
			}
			GL11.glPopMatrix();

			GL11.glPushMatrix();
			{
				GL11.glTranslatef((posX + 4) * scale + width, scale * (posY + 2), 0);
				GL11.glScalef(scale, scale, 0);
				drawTexturedModalRect(0, 0, 4, 22, 2, 6);
			}
			GL11.glPopMatrix();
		}
		GL11.glPopMatrix();

	}

	@SubscribeEvent
	public void onRenderOverlayPost (RenderGameOverlayEvent event) {
		if (!ConfigHandler.displayGUI())
			return;
		if(!Minecraft.getMinecraft().player.getCapability(ModCapabilities.PLAYER_STATS, null).getHudMode()) return;
		if (event.getType().equals(ElementType.HEALTH) && event.isCancelable()) if (!ConfigHandler.EnableHeartsOnHUD) event.setCanceled(true);
		if (event.getType() == RenderGameOverlayEvent.ElementType.TEXT) {

			Minecraft mc = Minecraft.getMinecraft();
			EntityPlayer player = mc.player;

			mc.renderEngine.bindTexture(new ResourceLocation(Reference.MODID, "textures/gui/hpbar.png"));

			int screenWidth = event.getResolution().getScaledWidth();
			int screenHeight = event.getResolution().getScaledHeight();

			float oneHeart = (noborderguiwidth / player.getMaxHealth());
			int currHealth = noborderguiwidth - (int) (oneHeart * player.getHealth());
			float scale = 0.65f;

			hpBarWidth = (int) ((int) player.getHealth() * 1.5);

			int hpBarMaxWidth = (int) ((int) player.getMaxHealth() * 1.5);

			switch (mc.gameSettings.guiScale) {
				case Constants.SCALE_AUTO:
					scale = 0.85f;
					break;
				case Constants.SCALE_NORMAL:
					scale = 0.85f;
					break;
				default:
					scale = 0.65f;
					break;
			}

			int posX = 190 - hpBarWidth;

			GL11.glPushMatrix();
			GL11.glTranslatef((screenWidth - hpBarMaxWidth * scale) - 10 * scale, (screenHeight - guiHeight * scale) + 3 * scale, 0);
			GL11.glScalef(scale, scale, scale);
			drawHPBarBack(0, 0, hpBarMaxWidth, scale);
			GL11.glPopMatrix();
			if (player.getHealth() >= player.getMaxHealth()/5) {
				GL11.glPushMatrix();
				GL11.glTranslatef((screenWidth - (hpBarWidth) * scale) - 10 * scale, (screenHeight - (guiHeight) * scale) + 3 * scale, 0);
				GL11.glScalef(scale, scale, scale);
				drawHPBarTop(0, 0, (int) ((hpBarWidth - (4 * scale))), scale);
				GL11.glPopMatrix();
			} else {
				GL11.glPushMatrix();
				GL11.glTranslatef((screenWidth - (hpBarWidth) * scale) - 10 * scale, (screenHeight - (guiHeight) * scale) + 3 * scale, 0);
				GL11.glScalef(scale, scale, scale);
				drawHPBarTopRed(0, 0, (int) ((hpBarWidth - (4 * scale))), scale);
				GL11.glPopMatrix();
			}
		}
	}
}