Java tutorial
/* * This file is part of Applied Energistics 2. * Copyright (c) 2013 - 2014, AlgorithmX2, All rights reserved. * * Applied Energistics 2 is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * Applied Energistics 2 is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with Applied Energistics 2. If not, see <http://www.gnu.org/licenses/lgpl>. */ package appeng.client.render.items; import org.lwjgl.opengl.GL11; import net.minecraft.client.Minecraft; import net.minecraft.client.renderer.ItemRenderer; import net.minecraft.client.renderer.RenderHelper; import net.minecraft.client.renderer.Tessellator; import net.minecraft.entity.Entity; import net.minecraft.item.ItemStack; import net.minecraft.util.IIcon; import net.minecraftforge.client.IItemRenderer; import appeng.api.util.AEColor; import appeng.client.texture.ExtraItemTextures; import appeng.items.tools.powered.ToolWirelessTerminal; public class ToolWirelessTerminalRender implements IItemRenderer { @Override public boolean handleRenderType(final ItemStack item, final ItemRenderType type) { return true; } @Override public boolean shouldUseRenderHelper(final ItemRenderType type, final ItemStack item, final ItemRendererHelper helper) { return false; } @Override public void renderItem(final ItemRenderType type, final ItemStack item, final Object... data) { Entity itemLocation = item.getItemFrame(); if (itemLocation == null) { itemLocation = Minecraft.getMinecraft().thePlayer; } final boolean displayAntenna = ((ToolWirelessTerminal) item.getItem()).getIsUsable(item, itemLocation); final boolean hasPower = ((ToolWirelessTerminal) item.getItem()).hasPower(null, 0.5, item); IIcon border; if (displayAntenna) { border = ExtraItemTextures.WirelessTerminal_Border.getIcon(); } else { border = ExtraItemTextures.WirelessTerminal_Border_Inactive.getIcon(); } final IIcon scrollBar = ExtraItemTextures.WirelessTerminal_ScrollBar.getIcon(); final IIcon icons = ExtraItemTextures.WirelessTerminal_Icons.getIcon(); IIcon screen = ExtraItemTextures.WirelessTerminal_Screen.getIcon(); final AEColor color = ToolWirelessTerminal.getColor(item); if (color == null) { screen = item.getIconIndex(); } final Tessellator tessellator = Tessellator.instance; GL11.glPushMatrix(); GL11.glPushAttrib(GL11.GL_ALL_ATTRIB_BITS); //translate stuff for different item render types if (type != ItemRenderType.INVENTORY) { if (type == ItemRenderType.EQUIPPED_FIRST_PERSON) { GL11.glTranslatef(0.0F, 0.0F, 0.0F); } else if (type == ItemRenderType.EQUIPPED) { GL11.glTranslatef(0.0F, 0.0F, 0.0F); } else { GL11.glTranslatef(-0.5F, -0.3F, 0.01F); } } else { GL11.glColor4f(1, 1, 1, 1.0F); GL11.glScalef(16F, 16F, 10F); GL11.glTranslatef(0.0F, 1.0F, 0.0F); GL11.glRotatef(180F, 1.0F, 0.0F, 0.0F); GL11.glEnable(GL11.GL_ALPHA_TEST); } final float f12 = 0.0625F; //Border, which is uncolored subRenderItem(type, tessellator, border, f12); if (hasPower) { RenderHelper.disableStandardItemLighting(); } //If a terminal isn't colored, use the default icon which doesn't require icons or scrollbar if (color != null) { //Icons, which are dark colored { final int blackColor = color.blackVariant; final float r = (blackColor >> 16) & 0xFF; final float g = (blackColor >> 8) & 0xFF; final float b = blackColor & 0xFF; GL11.glColor3f(r / 256.0f, g / 256.0f, b / 256.0f); subRenderItem(type, tessellator, icons, f12); } //Scrollbar, which is medium colored { final int medColor = color.mediumVariant; final float r = (medColor >> 16) & 0xFF; final float g = (medColor >> 8) & 0xFF; final float b = medColor & 0xFF; GL11.glColor3f(r / 256.0f, g / 256.0f, b / 256.0f); subRenderItem(type, tessellator, scrollBar, f12); } } //Screen, which is light colored { if (color != null) { final int whiteColor = color.whiteVariant; final float r = (whiteColor >> 16) & 0xFF; final float g = (whiteColor >> 8) & 0xFF; final float b = whiteColor & 0xFF; GL11.glColor3f(r / 256.0f, g / 256.0f, b / 256.0f); } subRenderItem(type, tessellator, screen, f12); } GL11.glPopAttrib(); GL11.glPopMatrix(); } private void subRenderItem(final ItemRenderType type, final Tessellator tessellator, final IIcon icon, final float f12) { final float f4 = icon.getMinU(); final float f5 = icon.getMaxU(); final float f6 = icon.getMinV(); final float f7 = icon.getMaxV(); final int width = icon.getIconWidth(); final int height = icon.getIconHeight(); if (type != ItemRenderType.INVENTORY) { ItemRenderer.renderItemIn2D(tessellator, f5, f6, f4, f7, width, height, f12); } else { tessellator.startDrawingQuads(); tessellator.setNormal(0.0F, 1.0F, 0.0F); tessellator.addVertexWithUV(0, 0, 0, f4, f7); tessellator.addVertexWithUV(1, 0, 0, f5, f7); tessellator.addVertexWithUV(1, 1, 0, f5, f6); tessellator.addVertexWithUV(0, 1, 0, f4, f6); tessellator.draw(); } } }