    001package net.minecraft.client.renderer;
    002
    003import cpw.mods.fml.relauncher.Side;
    004import cpw.mods.fml.relauncher.SideOnly;
    005import java.util.ArrayList;
    006import java.util.HashSet;
    007import java.util.List;
    008import net.minecraft.block.Block;
    009import net.minecraft.client.renderer.culling.ICamera;
    010import net.minecraft.client.renderer.entity.RenderItem;
    011import net.minecraft.client.renderer.tileentity.TileEntityRenderer;
    012import net.minecraft.entity.Entity;
    013import net.minecraft.tileentity.TileEntity;
    014import net.minecraft.util.AxisAlignedBB;
    015import net.minecraft.world.ChunkCache;
    016import net.minecraft.world.World;
    017import net.minecraft.world.chunk.Chunk;
    018import org.lwjgl.opengl.GL11;
    019
    020import net.minecraftforge.client.ForgeHooksClient;
    021
    022@SideOnly(Side.CLIENT)
    023public class WorldRenderer
    024{
    025    /** Reference to the World object. */
    026    public World worldObj;
    027    private int glRenderList = -1;
    028    //private static Tessellator tessellator = Tessellator.instance;
    029    public static int chunksUpdated = 0;
    030    public int posX;
    031    public int posY;
    032    public int posZ;
    033
    034    /** Pos X minus */
    035    public int posXMinus;
    036
    037    /** Pos Y minus */
    038    public int posYMinus;
    039
    040    /** Pos Z minus */
    041    public int posZMinus;
    042
    043    /** Pos X clipped */
    044    public int posXClip;
    045
    046    /** Pos Y clipped */
    047    public int posYClip;
    048
    049    /** Pos Z clipped */
    050    public int posZClip;
    051    public boolean isInFrustum = false;
    052
    053    /** Should this renderer skip this render pass */
    054    public boolean[] skipRenderPass = new boolean[2];
    055
    056    /** Pos X plus */
    057    public int posXPlus;
    058
    059    /** Pos Y plus */
    060    public int posYPlus;
    061
    062    /** Pos Z plus */
    063    public int posZPlus;
    064
    065    /** Boolean for whether this renderer needs to be updated or not */
    066    public boolean needsUpdate;
    067
    068    /** Axis aligned bounding box */
    069    public AxisAlignedBB rendererBoundingBox;
    070
    071    /** Chunk index */
    072    public int chunkIndex;
    073
    074    /** Is this renderer visible according to the occlusion query */
    075    public boolean isVisible = true;
    076
    077    /** Is this renderer waiting on the result of the occlusion query */
    078    public boolean isWaitingOnOcclusionQuery;
    079
    080    /** OpenGL occlusion query */
    081    public int glOcclusionQuery;
    082
    083    /** Is the chunk lit */
    084    public boolean isChunkLit;
    085    private boolean isInitialized = false;
    086
    087    /** All the tile entities that have special rendering code for this chunk */
    088    public List tileEntityRenderers = new ArrayList();
    089    private List tileEntities;
    090
    091    /** Bytes sent to the GPU */
    092    private int bytesDrawn;
    093
    094    public WorldRenderer(World par1World, List par2List, int par3, int par4, int par5, int par6)
    095    {
    096        this.worldObj = par1World;
    097        this.tileEntities = par2List;
    098        this.glRenderList = par6;
    099        this.posX = -999;
    100        this.setPosition(par3, par4, par5);
    101        this.needsUpdate = false;
    102    }
    103
    104    /**
    105     * Sets a new position for the renderer and setting it up so it can be reloaded with the new data for that position
    106     */
    107    public void setPosition(int par1, int par2, int par3)
    108    {
    109        if (par1 != this.posX || par2 != this.posY || par3 != this.posZ)
    110        {
    111            this.setDontDraw();
    112            this.posX = par1;
    113            this.posY = par2;
    114            this.posZ = par3;
    115            this.posXPlus = par1 + 8;
    116            this.posYPlus = par2 + 8;
    117            this.posZPlus = par3 + 8;
    118            this.posXClip = par1 & 1023;
    119            this.posYClip = par2;
    120            this.posZClip = par3 & 1023;
    121            this.posXMinus = par1 - this.posXClip;
    122            this.posYMinus = par2 - this.posYClip;
    123            this.posZMinus = par3 - this.posZClip;
    124            float var4 = 6.0F;
    125            this.rendererBoundingBox = AxisAlignedBB.getBoundingBox((double)((float)par1 - var4), (double)((float)par2 - var4), (double)((float)par3 - var4), (double)((float)(par1 + 16) + var4), (double)((float)(par2 + 16) + var4), (double)((float)(par3 + 16) + var4));
    126            GL11.glNewList(this.glRenderList + 2, GL11.GL_COMPILE);
    127            RenderItem.renderAABB(AxisAlignedBB.getAABBPool().addOrModifyAABBInPool((double)((float)this.posXClip - var4), (double)((float)this.posYClip - var4), (double)((float)this.posZClip - var4), (double)((float)(this.posXClip + 16) + var4), (double)((float)(this.posYClip + 16) + var4), (double)((float)(this.posZClip + 16) + var4)));
    128            GL11.glEndList();
    129            this.markDirty();
    130        }
    131    }
    132
    133    private void setupGLTranslation()
    134    {
    135        GL11.glTranslatef((float)this.posXClip, (float)this.posYClip, (float)this.posZClip);
    136    }
    137
    138    /**
    139     * Will update this chunk renderer
    140     */
    141    public void updateRenderer()
    142    {
    143        if (this.needsUpdate)
    144        {
    145            this.needsUpdate = false;
    146            int var1 = this.posX;
    147            int var2 = this.posY;
    148            int var3 = this.posZ;
    149            int var4 = this.posX + 16;
    150            int var5 = this.posY + 16;
    151            int var6 = this.posZ + 16;
    152
    153            for (int var7 = 0; var7 < 2; ++var7)
    154            {
    155                this.skipRenderPass[var7] = true;
    156            }
    157
    158            Chunk.isLit = false;
    159            HashSet var21 = new HashSet();
    160            var21.addAll(this.tileEntityRenderers);
    161            this.tileEntityRenderers.clear();
    162            byte var8 = 1;
    163            ChunkCache var9 = new ChunkCache(this.worldObj, var1 - var8, var2 - var8, var3 - var8, var4 + var8, var5 + var8, var6 + var8);
    164
    165            if (!var9.extendedLevelsInChunkCache())
    166            {
    167                ++chunksUpdated;
    168                RenderBlocks var10 = new RenderBlocks(var9);
    169                this.bytesDrawn = 0;
    170
    171                for (int var11 = 0; var11 < 2; ++var11)
    172                {
    173                    boolean var12 = false;
    174                    boolean var13 = false;
    175                    boolean var14 = false;
    176
    177                    for (int var15 = var2; var15 < var5; ++var15)
    178                    {
    179                        for (int var16 = var3; var16 < var6; ++var16)
    180                        {
    181                            for (int var17 = var1; var17 < var4; ++var17)
    182                            {
    183                                int var18 = var9.getBlockId(var17, var15, var16);
    184
    185                                if (var18 > 0)
    186                                {
    187                                    if (!var14)
    188                                    {
    189                                        var14 = true;
    190                                        GL11.glNewList(this.glRenderList + var11, GL11.GL_COMPILE);
    191                                        GL11.glPushMatrix();
    192                                        this.setupGLTranslation();
    193                                        float var19 = 1.000001F;
    194                                        GL11.glTranslatef(-8.0F, -8.0F, -8.0F);
    195                                        GL11.glScalef(var19, var19, var19);
    196                                        GL11.glTranslatef(8.0F, 8.0F, 8.0F);
    197                                        ForgeHooksClient.beforeRenderPass(var11);
    198                                        Tessellator.instance.startDrawingQuads();
    199                                        Tessellator.instance.setTranslation((double)(-this.posX), (double)(-this.posY), (double)(-this.posZ));
    200                                    }
    201
    202                                    Block var23 = Block.blocksList[var18];
    203
    204                                    if (var23 != null)
    205                                    {
    206                                        if (var11 == 0 && var23.hasTileEntity(var9.getBlockMetadata(var17, var15, var16)))
    207                                        {
    208                                            TileEntity var20 = var9.getBlockTileEntity(var17, var15, var16);
    209
    210                                            if (TileEntityRenderer.instance.hasSpecialRenderer(var20))
    211                                            {
    212                                                this.tileEntityRenderers.add(var20);
    213                                            }
    214                                        }
    215
    216                                        int var24 = var23.getRenderBlockPass();
    217
    218                                        if (var24 > var11)
    219                                        {
    220                                            var12 = true;
    221                                        }
    222                                        if (!var23.canRenderInPass(var11))
    223                                        {
    224                                            continue;
    225                                        }
    226                                        ForgeHooksClient.beforeBlockRender(var23, var10);
    227                                        var13 |= var10.renderBlockByRenderType(var23, var17, var15, var16);
    228                                        ForgeHooksClient.afterBlockRender(var23, var10);
    229                                    }
    230                                }
    231                            }
    232                        }
    233                    }
    234
    235                    if (var14)
    236                    {
    237                        ForgeHooksClient.afterRenderPass(var11);
    238                        this.bytesDrawn += Tessellator.instance.draw();
    239                        GL11.glPopMatrix();
    240                        GL11.glEndList();
    241                        Tessellator.instance.setTranslation(0.0D, 0.0D, 0.0D);
    242                    }
    243                    else
    244                    {
    245                        var13 = false;
    246                    }
    247
    248                    if (var13)
    249                    {
    250                        this.skipRenderPass[var11] = false;
    251                    }
    252
    253                    if (!var12)
    254                    {
    255                        break;
    256                    }
    257                }
    258            }
    259
    260            HashSet var22 = new HashSet();
    261            var22.addAll(this.tileEntityRenderers);
    262            var22.removeAll(var21);
    263            this.tileEntities.addAll(var22);
    264            var21.removeAll(this.tileEntityRenderers);
    265            this.tileEntities.removeAll(var21);
    266            this.isChunkLit = Chunk.isLit;
    267            this.isInitialized = true;
    268        }
    269    }
    270
    271    /**
    272     * Returns the distance of this chunk renderer to the entity without performing the final normalizing square root,
    273     * for performance reasons.
    274     */
    275    public float distanceToEntitySquared(Entity par1Entity)
    276    {
    277        float var2 = (float)(par1Entity.posX - (double)this.posXPlus);
    278        float var3 = (float)(par1Entity.posY - (double)this.posYPlus);
    279        float var4 = (float)(par1Entity.posZ - (double)this.posZPlus);
    280        return var2 * var2 + var3 * var3 + var4 * var4;
    281    }
    282
    283    /**
    284     * When called this renderer won't draw anymore until its gets initialized again
    285     */
    286    public void setDontDraw()
    287    {
    288        for (int var1 = 0; var1 < 2; ++var1)
    289        {
    290            this.skipRenderPass[var1] = true;
    291        }
    292
    293        this.isInFrustum = false;
    294        this.isInitialized = false;
    295    }
    296
    297    public void stopRendering()
    298    {
    299        this.setDontDraw();
    300        this.worldObj = null;
    301    }
    302
    303    /**
    304     * Takes in the pass the call list is being requested for. Args: renderPass
    305     */
    306    public int getGLCallListForPass(int par1)
    307    {
    308        return !this.isInFrustum ? -1 : (!this.skipRenderPass[par1] ? this.glRenderList + par1 : -1);
    309    }
    310
    311    public void updateInFrustum(ICamera par1ICamera)
    312    {
    313        this.isInFrustum = par1ICamera.isBoundingBoxInFrustum(this.rendererBoundingBox);
    314    }
    315
    316    /**
    317     * Renders the occlusion query GL List
    318     */
    319    public void callOcclusionQueryList()
    320    {
    321        GL11.glCallList(this.glRenderList + 2);
    322    }
    323
    324    /**
    325     * Checks if all render passes are to be skipped. Returns false if the renderer is not initialized
    326     */
    327    public boolean skipAllRenderPasses()
    328    {
    329        return !this.isInitialized ? false : this.skipRenderPass[0] && this.skipRenderPass[1];
    330    }
    331
    332    /**
    333     * Marks the current renderer data as dirty and needing to be updated.
    334     */
    335    public void markDirty()
    336    {
    337        this.needsUpdate = true;
    338    }
    339}