001    package net.minecraft.src;
002    
003    import cpw.mods.fml.common.Side;
004    import cpw.mods.fml.common.asm.SideOnly;
005    import net.minecraft.client.Minecraft;
006    import net.minecraftforge.client.ForgeHooksClient;
007    
008    import org.lwjgl.opengl.GL11;
009    
010    @SideOnly(Side.CLIENT)
011    public class TileEntityRendererPiston extends TileEntitySpecialRenderer
012    {
013        /** instance of RenderBlocks used to draw the piston base and extension. */
014        private RenderBlocks blockRenderer;
015    
016        public void renderPiston(TileEntityPiston par1TileEntityPiston, double par2, double par4, double par6, float par8)
017        {
018            Block var9 = Block.blocksList[par1TileEntityPiston.getStoredBlockID()];
019    
020            if (var9 != null && par1TileEntityPiston.getProgress(par8) < 1.0F)
021            {
022                Tessellator var10 = Tessellator.instance;
023                this.bindTextureByName("/terrain.png");
024                RenderHelper.disableStandardItemLighting();
025                GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
026                GL11.glEnable(GL11.GL_BLEND);
027                GL11.glDisable(GL11.GL_CULL_FACE);
028    
029                if (Minecraft.isAmbientOcclusionEnabled())
030                {
031                    GL11.glShadeModel(GL11.GL_SMOOTH);
032                }
033                else
034                {
035                    GL11.glShadeModel(GL11.GL_FLAT);
036                }
037    
038                ForgeHooksClient.beforeBlockRender(var9, blockRenderer);
039                var10.startDrawingQuads();
040                var10.setTranslation((double)((float)par2 - (float)par1TileEntityPiston.xCoord + par1TileEntityPiston.getOffsetX(par8)), (double)((float)par4 - (float)par1TileEntityPiston.yCoord + par1TileEntityPiston.getOffsetY(par8)), (double)((float)par6 - (float)par1TileEntityPiston.zCoord + par1TileEntityPiston.getOffsetZ(par8)));
041                var10.setColorOpaque(1, 1, 1);
042    
043                if (var9 == Block.pistonExtension && par1TileEntityPiston.getProgress(par8) < 0.5F)
044                {
045                    this.blockRenderer.renderPistonExtensionAllFaces(var9, par1TileEntityPiston.xCoord, par1TileEntityPiston.yCoord, par1TileEntityPiston.zCoord, false);
046                }
047                else if (par1TileEntityPiston.shouldRenderHead() && !par1TileEntityPiston.isExtending())
048                {
049                    Block.pistonExtension.setHeadTexture(((BlockPistonBase)var9).getPistonExtensionTexture());
050                    this.blockRenderer.renderPistonExtensionAllFaces(Block.pistonExtension, par1TileEntityPiston.xCoord, par1TileEntityPiston.yCoord, par1TileEntityPiston.zCoord, par1TileEntityPiston.getProgress(par8) < 0.5F);
051                    Block.pistonExtension.clearHeadTexture();
052                    var10.setTranslation((double)((float)par2 - (float)par1TileEntityPiston.xCoord), (double)((float)par4 - (float)par1TileEntityPiston.yCoord), (double)((float)par6 - (float)par1TileEntityPiston.zCoord));
053                    this.blockRenderer.renderPistonBaseAllFaces(var9, par1TileEntityPiston.xCoord, par1TileEntityPiston.yCoord, par1TileEntityPiston.zCoord);
054                }
055                else
056                {
057                    this.blockRenderer.renderBlockAllFaces(var9, par1TileEntityPiston.xCoord, par1TileEntityPiston.yCoord, par1TileEntityPiston.zCoord);
058                }
059    
060                var10.setTranslation(0.0D, 0.0D, 0.0D);
061                var10.draw();
062                ForgeHooksClient.afterBlockRender(var9, blockRenderer);
063                RenderHelper.enableStandardItemLighting();
064            }
065        }
066    
067        /**
068         * Called when the ingame world being rendered changes (e.g. on world -> nether travel) due to using one renderer
069         * per tile entity type, rather than instance
070         */
071        public void onWorldChange(World par1World)
072        {
073            this.blockRenderer = new RenderBlocks(par1World);
074        }
075    
076        public void renderTileEntityAt(TileEntity par1TileEntity, double par2, double par4, double par6, float par8)
077        {
078            this.renderPiston((TileEntityPiston)par1TileEntity, par2, par4, par6, par8);
079        }
080    }