001package net.minecraft.client.renderer.tileentity;
002
003import cpw.mods.fml.relauncher.Side;
004import cpw.mods.fml.relauncher.SideOnly;
005import net.minecraft.block.Block;
006import net.minecraft.block.BlockPistonBase;
007import net.minecraft.client.Minecraft;
008import net.minecraft.client.renderer.RenderBlocks;
009import net.minecraft.client.renderer.RenderHelper;
010import net.minecraft.client.renderer.Tessellator;
011import net.minecraft.tileentity.TileEntity;
012import net.minecraft.tileentity.TileEntityPiston;
013import net.minecraft.world.World;
014import org.lwjgl.opengl.GL11;
015
016@SideOnly(Side.CLIENT)
017public class TileEntityRendererPiston extends TileEntitySpecialRenderer
018{
019    /** instance of RenderBlocks used to draw the piston base and extension. */
020    private RenderBlocks blockRenderer;
021
022    public void renderPiston(TileEntityPiston par1TileEntityPiston, double par2, double par4, double par6, float par8)
023    {
024        Block block = Block.blocksList[par1TileEntityPiston.getStoredBlockID()];
025
026        if (block != null && par1TileEntityPiston.getProgress(par8) < 1.0F)
027        {
028            Tessellator tessellator = Tessellator.instance;
029            this.bindTextureByName("/terrain.png");
030            RenderHelper.disableStandardItemLighting();
031            GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
032            GL11.glEnable(GL11.GL_BLEND);
033            GL11.glDisable(GL11.GL_CULL_FACE);
034
035            if (Minecraft.isAmbientOcclusionEnabled())
036            {
037                GL11.glShadeModel(GL11.GL_SMOOTH);
038            }
039            else
040            {
041                GL11.glShadeModel(GL11.GL_FLAT);
042            }
043
044            tessellator.startDrawingQuads();
045            tessellator.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)));
046            tessellator.setColorOpaque(1, 1, 1);
047
048            if (block == Block.pistonExtension && par1TileEntityPiston.getProgress(par8) < 0.5F)
049            {
050                this.blockRenderer.renderPistonExtensionAllFaces(block, par1TileEntityPiston.xCoord, par1TileEntityPiston.yCoord, par1TileEntityPiston.zCoord, false);
051            }
052            else if (par1TileEntityPiston.shouldRenderHead() && !par1TileEntityPiston.isExtending())
053            {
054                Block.pistonExtension.setHeadTexture(((BlockPistonBase)block).getPistonExtensionTexture());
055                this.blockRenderer.renderPistonExtensionAllFaces(Block.pistonExtension, par1TileEntityPiston.xCoord, par1TileEntityPiston.yCoord, par1TileEntityPiston.zCoord, par1TileEntityPiston.getProgress(par8) < 0.5F);
056                Block.pistonExtension.clearHeadTexture();
057                tessellator.setTranslation((double)((float)par2 - (float)par1TileEntityPiston.xCoord), (double)((float)par4 - (float)par1TileEntityPiston.yCoord), (double)((float)par6 - (float)par1TileEntityPiston.zCoord));
058                this.blockRenderer.renderPistonBaseAllFaces(block, par1TileEntityPiston.xCoord, par1TileEntityPiston.yCoord, par1TileEntityPiston.zCoord);
059            }
060            else
061            {
062                this.blockRenderer.renderBlockAllFaces(block, par1TileEntityPiston.xCoord, par1TileEntityPiston.yCoord, par1TileEntityPiston.zCoord);
063            }
064
065            tessellator.setTranslation(0.0D, 0.0D, 0.0D);
066            tessellator.draw();
067            RenderHelper.enableStandardItemLighting();
068        }
069    }
070
071    /**
072     * Called when the ingame world being rendered changes (e.g. on world -> nether travel) due to using one renderer
073     * per tile entity type, rather than instance
074     */
075    public void onWorldChange(World par1World)
076    {
077        this.blockRenderer = new RenderBlocks(par1World);
078    }
079
080    public void renderTileEntityAt(TileEntity par1TileEntity, double par2, double par4, double par6, float par8)
081    {
082        this.renderPiston((TileEntityPiston)par1TileEntity, par2, par4, par6, par8);
083    }
084}