    001package net.minecraft.client.renderer.entity;
    002
    003import cpw.mods.fml.relauncher.Side;
    004import cpw.mods.fml.relauncher.SideOnly;
    005import net.minecraft.block.Block;
    006import net.minecraft.client.model.ModelBase;
    007import net.minecraft.client.model.ModelMinecart;
    008import net.minecraft.client.renderer.RenderBlocks;
    009import net.minecraft.entity.Entity;
    010import net.minecraft.entity.item.EntityMinecart;
    011import net.minecraft.util.MathHelper;
    012import net.minecraft.util.Vec3;
    013import org.lwjgl.opengl.GL11;
    014
    015@SideOnly(Side.CLIENT)
    016public class RenderMinecart extends Render
    017{
    018    /** instance of ModelMinecart for rendering */
    019    protected ModelBase modelMinecart;
    020
    021    public RenderMinecart()
    022    {
    023        this.shadowSize = 0.5F;
    024        this.modelMinecart = new ModelMinecart();
    025    }
    026
    027    /**
    028     * Renders the Minecart.
    029     */
    030    public void renderTheMinecart(EntityMinecart par1EntityMinecart, double par2, double par4, double par6, float par8, float par9)
    031    {
    032        GL11.glPushMatrix();
    033        long var10 = (long)par1EntityMinecart.entityId * 493286711L;
    034        var10 = var10 * var10 * 4392167121L + var10 * 98761L;
    035        float var12 = (((float)(var10 >> 16 & 7L) + 0.5F) / 8.0F - 0.5F) * 0.004F;
    036        float var13 = (((float)(var10 >> 20 & 7L) + 0.5F) / 8.0F - 0.5F) * 0.004F;
    037        float var14 = (((float)(var10 >> 24 & 7L) + 0.5F) / 8.0F - 0.5F) * 0.004F;
    038        GL11.glTranslatef(var12, var13, var14);
    039        double var15 = par1EntityMinecart.lastTickPosX + (par1EntityMinecart.posX - par1EntityMinecart.lastTickPosX) * (double)par9;
    040        double var17 = par1EntityMinecart.lastTickPosY + (par1EntityMinecart.posY - par1EntityMinecart.lastTickPosY) * (double)par9;
    041        double var19 = par1EntityMinecart.lastTickPosZ + (par1EntityMinecart.posZ - par1EntityMinecart.lastTickPosZ) * (double)par9;
    042        double var21 = 0.30000001192092896D;
    043        Vec3 var23 = par1EntityMinecart.func_70489_a(var15, var17, var19);
    044        float var24 = par1EntityMinecart.prevRotationPitch + (par1EntityMinecart.rotationPitch - par1EntityMinecart.prevRotationPitch) * par9;
    045
    046        if (var23 != null)
    047        {
    048            Vec3 var25 = par1EntityMinecart.func_70495_a(var15, var17, var19, var21);
    049            Vec3 var26 = par1EntityMinecart.func_70495_a(var15, var17, var19, -var21);
    050
    051            if (var25 == null)
    052            {
    053                var25 = var23;
    054            }
    055
    056            if (var26 == null)
    057            {
    058                var26 = var23;
    059            }
    060
    061            par2 += var23.xCoord - var15;
    062            par4 += (var25.yCoord + var26.yCoord) / 2.0D - var17;
    063            par6 += var23.zCoord - var19;
    064            Vec3 var27 = var26.addVector(-var25.xCoord, -var25.yCoord, -var25.zCoord);
    065
    066            if (var27.lengthVector() != 0.0D)
    067            {
    068                var27 = var27.normalize();
    069                par8 = (float)(Math.atan2(var27.zCoord, var27.xCoord) * 180.0D / Math.PI);
    070                var24 = (float)(Math.atan(var27.yCoord) * 73.0D);
    071            }
    072        }
    073
    074        GL11.glTranslatef((float)par2, (float)par4, (float)par6);
    075        GL11.glRotatef(180.0F - par8, 0.0F, 1.0F, 0.0F);
    076        GL11.glRotatef(-var24, 0.0F, 0.0F, 1.0F);
    077        float var28 = (float)par1EntityMinecart.getRollingAmplitude() - par9;
    078        float var30 = (float)par1EntityMinecart.getDamage() - par9;
    079
    080        if (var30 < 0.0F)
    081        {
    082            var30 = 0.0F;
    083        }
    084
    085        if (var28 > 0.0F)
    086        {
    087            GL11.glRotatef(MathHelper.sin(var28) * var28 * var30 / 10.0F * (float)par1EntityMinecart.getRollingDirection(), 1.0F, 0.0F, 0.0F);
    088        }
    089
    090        if (par1EntityMinecart.minecartType != 0)
    091        {
    092            this.loadTexture("/terrain.png");
    093            float var29 = 0.75F;
    094            GL11.glScalef(var29, var29, var29);
    095
    096            if (par1EntityMinecart.minecartType == 1)
    097            {
    098                GL11.glTranslatef(0.0F, 0.5F, 0.0F);
    099                (new RenderBlocks()).renderBlockAsItem(Block.chest, 0, par1EntityMinecart.getBrightness(par9));
    100                GL11.glRotatef(-90.0F, 0.0F, 1.0F, 0.0F);
    101                GL11.glTranslatef(0.5F, 0.0F, -0.5F);
    102                GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
    103            }
    104            else if (par1EntityMinecart.minecartType == 2)
    105            {
    106                GL11.glTranslatef(0.0F, 0.3125F, 0.0F);
    107                (new RenderBlocks()).renderBlockAsItem(Block.stoneOvenIdle, 0, par1EntityMinecart.getBrightness(par9));
    108                GL11.glRotatef(-90.0F, 0.0F, 1.0F, 0.0F);
    109                GL11.glTranslatef(0.0F, -0.3125F, 0.0F);
    110                GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
    111            }
    112
    113            GL11.glScalef(1.0F / var29, 1.0F / var29, 1.0F / var29);
    114        }
    115
    116        this.loadTexture("/item/cart.png");
    117        GL11.glScalef(-1.0F, -1.0F, 1.0F);
    118        this.modelMinecart.render(par1EntityMinecart, 0.0F, 0.0F, -0.1F, 0.0F, 0.0F, 0.0625F);
    119        GL11.glPopMatrix();
    120    }
    121
    122    /**
    123     * Actually renders the given argument. This is a synthetic bridge method, always casting down its argument and then
    124     * handing it off to a worker function which does the actual work. In all probabilty, the class Render is generic
    125     * (Render<T extends Entity) and this method has signature public void doRender(T entity, double d, double d1,
    126     * double d2, float f, float f1). But JAD is pre 1.5 so doesn't do that.
    127     */
    128    public void doRender(Entity par1Entity, double par2, double par4, double par6, float par8, float par9)
    129    {
    130        this.renderTheMinecart((EntityMinecart)par1Entity, par2, par4, par6, par8, par9);
    131    }
    132}