icbm/src/main/java/calclavia/lib/render/CalclaviaRenderHelper.java

package calclavia.lib.render;

import net.minecraft.block.Block;
import net.minecraft.client.gui.FontRenderer;
import net.minecraft.client.renderer.OpenGlHelper;
import net.minecraft.client.renderer.RenderBlocks;
import net.minecraft.client.renderer.RenderHelper;
import net.minecraft.client.renderer.Tessellator;
import net.minecraft.client.renderer.entity.RenderManager;
import org.lwjgl.opengl.GL11;

public class CalclaviaRenderHelper {

   public static void enableBlending() {
      GL11.glShadeModel(7425);
      GL11.glEnable(3042);
      GL11.glBlendFunc(770, 771);
   }

   public static void disableBlending() {
      GL11.glShadeModel(7424);
      GL11.glDisable(2848);
      GL11.glDisable(2881);
      GL11.glDisable(3042);
   }

   public static void enableLighting() {
      RenderHelper.enableStandardItemLighting();
   }

   public static void disableLighting() {
      RenderHelper.disableStandardItemLighting();
      OpenGlHelper.setLightmapTextureCoords(OpenGlHelper.lightmapTexUnit, 240.0F, 240.0F);
   }

   public static void renderNormalBlockAsItem(Block block, int metadata, RenderBlocks renderer) {
      Tessellator tessellator = Tessellator.instance;
      block.setBlockBoundsForItemRender();
      renderer.setRenderBoundsFromBlock(block);
      GL11.glRotatef(90.0F, 0.0F, 1.0F, 0.0F);
      GL11.glTranslatef(-0.5F, -0.5F, -0.5F);
      tessellator.startDrawingQuads();
      tessellator.setNormal(0.0F, -1.0F, 0.0F);
      renderer.renderFaceYNeg(block, 0.0D, 0.0D, 0.0D, renderer.getBlockIconFromSideAndMetadata(block, 0, metadata));
      tessellator.draw();
      tessellator.startDrawingQuads();
      tessellator.setNormal(0.0F, 1.0F, 0.0F);
      renderer.renderFaceYPos(block, 0.0D, 0.0D, 0.0D, renderer.getBlockIconFromSideAndMetadata(block, 1, metadata));
      tessellator.draw();
      tessellator.startDrawingQuads();
      tessellator.setNormal(0.0F, 0.0F, -1.0F);
      renderer.renderFaceZNeg(block, 0.0D, 0.0D, 0.0D, renderer.getBlockIconFromSideAndMetadata(block, 2, metadata));
      tessellator.draw();
      tessellator.startDrawingQuads();
      tessellator.setNormal(0.0F, 0.0F, 1.0F);
      renderer.renderFaceZPos(block, 0.0D, 0.0D, 0.0D, renderer.getBlockIconFromSideAndMetadata(block, 3, metadata));
      tessellator.draw();
      tessellator.startDrawingQuads();
      tessellator.setNormal(-1.0F, 0.0F, 0.0F);
      renderer.renderFaceXNeg(block, 0.0D, 0.0D, 0.0D, renderer.getBlockIconFromSideAndMetadata(block, 4, metadata));
      tessellator.draw();
      tessellator.startDrawingQuads();
      tessellator.setNormal(1.0F, 0.0F, 0.0F);
      renderer.renderFaceXPos(block, 0.0D, 0.0D, 0.0D, renderer.getBlockIconFromSideAndMetadata(block, 5, metadata));
      tessellator.draw();
      GL11.glTranslatef(0.5F, 0.5F, 0.5F);
   }

   public static void renderFloatingText(String text, float x, float y, float z) {
      renderFloatingText(text, x, y, z, 16777215);
   }

   public static void renderFloatingText(String text, float x, float y, float z, int color) {
      RenderManager renderManager = RenderManager.instance;
      FontRenderer fontRenderer = renderManager.getFontRenderer();
      float scale = 0.027F;
      GL11.glColor4f(1.0F, 1.0F, 1.0F, 0.5F);
      GL11.glPushMatrix();
      GL11.glTranslatef(x + 0.0F, y + 2.3F, z);
      GL11.glNormal3f(0.0F, 1.0F, 0.0F);
      GL11.glRotatef(-renderManager.playerViewY, 0.0F, 1.0F, 0.0F);
      GL11.glRotatef(renderManager.playerViewX, 1.0F, 0.0F, 0.0F);
      GL11.glScalef(-scale, -scale, scale);
      GL11.glDisable(2896);
      GL11.glDepthMask(false);
      GL11.glDisable(2929);
      GL11.glEnable(3042);
      GL11.glBlendFunc(770, 771);
      Tessellator tessellator = Tessellator.instance;
      byte yOffset = 0;
      GL11.glDisable(3553);
      tessellator.startDrawingQuads();
      int stringMiddle = fontRenderer.getStringWidth(text) / 2;
      tessellator.setColorRGBA_F(0.0F, 0.0F, 0.0F, 0.5F);
      tessellator.addVertex((double)(-stringMiddle - 1), (double)(-1 + yOffset), 0.0D);
      tessellator.addVertex((double)(-stringMiddle - 1), (double)(8 + yOffset), 0.0D);
      tessellator.addVertex((double)(stringMiddle + 1), (double)(8 + yOffset), 0.0D);
      tessellator.addVertex((double)(stringMiddle + 1), (double)(-1 + yOffset), 0.0D);
      tessellator.draw();
      GL11.glEnable(3553);
      GL11.glColor4f(1.0F, 1.0F, 1.0F, 0.5F);
      fontRenderer.drawString(text, -fontRenderer.getStringWidth(text) / 2, yOffset, color);
      GL11.glEnable(2929);
      GL11.glDepthMask(true);
      fontRenderer.drawString(text, -fontRenderer.getStringWidth(text) / 2, yOffset, color);
      GL11.glEnable(2896);
      GL11.glDisable(3042);
      GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
      GL11.glPopMatrix();
   }
}