Java tutorial
package mal.carbonization.render; import org.lwjgl.opengl.GL11; import mal.carbonization.item.ItemStructureBlock; import net.minecraft.client.renderer.Tessellator; import net.minecraft.item.ItemStack; import net.minecraft.util.IIcon; import net.minecraftforge.client.IItemRenderer; public class StructureItemRenderer implements IItemRenderer { @Override public boolean handleRenderType(ItemStack item, ItemRenderType type) { switch (type) { case ENTITY: case EQUIPPED: case EQUIPPED_FIRST_PERSON: case INVENTORY: return true; default: return false; } } @Override public boolean shouldUseRenderHelper(ItemRenderType type, ItemStack item, ItemRendererHelper helper) { switch (type) { case ENTITY: { return (helper == ItemRendererHelper.ENTITY_BOBBING || helper == ItemRendererHelper.ENTITY_ROTATION || helper == ItemRendererHelper.BLOCK_3D); } case EQUIPPED: { return (helper == ItemRendererHelper.BLOCK_3D || helper == ItemRendererHelper.EQUIPPED_BLOCK); } case EQUIPPED_FIRST_PERSON: { return (helper == ItemRendererHelper.EQUIPPED_BLOCK); } case INVENTORY: { return (helper == ItemRendererHelper.INVENTORY_BLOCK); } default: { return false; } } } @Override public void renderItem(ItemRenderType type, ItemStack item, Object... data) { Tessellator tessellator = Tessellator.instance; //verify that the item is a ItemStructureBlock if (!(item.getItem() instanceof ItemStructureBlock)) return; GL11.glPushMatrix(); // GL11.glDisable(GL11.GL_LIGHTING); GL11.glEnable(GL11.GL_ALPHA_TEST); // GL11.glEnable(GL11.GL_BLEND); tessellator.startDrawingQuads(); // adjust rendering space to match what caller expects boolean mustundotranslate = false; switch (type) { case EQUIPPED: break; case INVENTORY: GL11.glTranslatef(0.0f, -0.08f, 0.0f); break; case EQUIPPED_FIRST_PERSON: { break; } case ENTITY: { GL11.glScalef(0.5f, 0.5f, 0.5f); GL11.glTranslatef(-0.5f, -0.5f, -0.5f); break; } default: break; // never here } GL11.glPushMatrix(); for (int i = 0; i < 3; i++) { IIcon icon; // xpos face textures icon = item.getItem().getIconFromDamageForRenderPass(item.getItemDamage(), i); if (icon != null) { tessellator.setNormal(1.0F, 0.0F, 0.0F); tessellator.addVertexWithUV(1.0, 0.0, 0.0, (double) icon.getMaxU(), (double) icon.getMaxV()); tessellator.addVertexWithUV(1.0, 1.0, 0.0, (double) icon.getMaxU(), (double) icon.getMinV()); tessellator.addVertexWithUV(1.0, 1.0, 1.0, (double) icon.getMinU(), (double) icon.getMinV()); tessellator.addVertexWithUV(1.0, 0.0, 1.0, (double) icon.getMinU(), (double) icon.getMaxV()); } // xneg face textures icon = item.getItem().getIconFromDamageForRenderPass(item.getItemDamage(), i); if (icon != null) { tessellator.setNormal(-1.0F, 0.0F, 0.0F); tessellator.addVertexWithUV(0.0, 0.0, 1.0, (double) icon.getMaxU(), (double) icon.getMaxV()); tessellator.addVertexWithUV(0.0, 1.0, 1.0, (double) icon.getMaxU(), (double) icon.getMinV()); tessellator.addVertexWithUV(0.0, 1.0, 0.0, (double) icon.getMinU(), (double) icon.getMinV()); tessellator.addVertexWithUV(0.0, 0.0, 0.0, (double) icon.getMinU(), (double) icon.getMaxV()); } // zneg face textures icon = item.getItem().getIconFromDamageForRenderPass(item.getItemDamage(), i); if (icon != null) { tessellator.setNormal(0.0F, 0.0F, -1.0F); tessellator.addVertexWithUV(0.0, 0.0, 0.0, (double) icon.getMaxU(), (double) icon.getMaxV()); tessellator.addVertexWithUV(0.0, 1.0, 0.0, (double) icon.getMaxU(), (double) icon.getMinV()); tessellator.addVertexWithUV(1.0, 1.0, 0.0, (double) icon.getMinU(), (double) icon.getMinV()); tessellator.addVertexWithUV(1.0, 0.0, 0.0, (double) icon.getMinU(), (double) icon.getMaxV()); } // zpos face textures icon = item.getItem().getIconFromDamageForRenderPass(item.getItemDamage(), i); if (icon != null) { tessellator.setNormal(0.0F, 0.0F, -1.0F); tessellator.addVertexWithUV(1.0, 0.0, 1.0, (double) icon.getMaxU(), (double) icon.getMaxV()); tessellator.addVertexWithUV(1.0, 1.0, 1.0, (double) icon.getMaxU(), (double) icon.getMinV()); tessellator.addVertexWithUV(0.0, 1.0, 1.0, (double) icon.getMinU(), (double) icon.getMinV()); tessellator.addVertexWithUV(0.0, 0.0, 1.0, (double) icon.getMinU(), (double) icon.getMaxV()); } if (i < 2) { // ypos face textures icon = item.getItem().getIconFromDamageForRenderPass(item.getItemDamage(), i); if (icon != null) { tessellator.setNormal(0.0F, 1.0F, 0.0F); tessellator.addVertexWithUV(1.0, 1.0, 1.0, (double) icon.getMaxU(), (double) icon.getMaxV()); tessellator.addVertexWithUV(1.0, 1.0, 0.0, (double) icon.getMaxU(), (double) icon.getMinV()); tessellator.addVertexWithUV(0.0, 1.0, 0.0, (double) icon.getMinU(), (double) icon.getMinV()); tessellator.addVertexWithUV(0.0, 1.0, 1.0, (double) icon.getMinU(), (double) icon.getMaxV()); } // yneg face textures icon = item.getItem().getIconFromDamageForRenderPass(item.getItemDamage(), i); if (icon != null) { tessellator.setNormal(0.0F, -1.0F, 0.0F); tessellator.addVertexWithUV(0.0, 0.0, 1.0, (double) icon.getMaxU(), (double) icon.getMaxV()); tessellator.addVertexWithUV(0.0, 0.0, 0.0, (double) icon.getMaxU(), (double) icon.getMinV()); tessellator.addVertexWithUV(1.0, 0.0, 0.0, (double) icon.getMinU(), (double) icon.getMinV()); tessellator.addVertexWithUV(1.0, 0.0, 1.0, (double) icon.getMinU(), (double) icon.getMaxV()); } } } tessellator.draw(); GL11.glPopMatrix(); /* GL11.glEnable(GL11.GL_LIGHTING); GL11.glDisable(GL11.GL_ALPHA_TEST); GL11.glDisable(GL11.GL_BLEND);*/ GL11.glPopMatrix(); } } /******************************************************************************* * Copyright (c) 2014 Malorolam. * * All rights reserved. This program and the accompanying materials * are made available under the terms of the included license, which is also * available at http://carbonization.wikispaces.com/License * *********************************************************************************/