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    protected final RenderBlocks field_94145_f;
021
022    public RenderMinecart()
023    {
024        this.shadowSize = 0.5F;
025        this.modelMinecart = new ModelMinecart();
026        this.field_94145_f = new RenderBlocks();
027    }
028
029    /**
030     * Renders the Minecart.
031     */
032    public void renderTheMinecart(EntityMinecart par1EntityMinecart, double par2, double par4, double par6, float par8, float par9)
033    {
034        GL11.glPushMatrix();
035        long i = (long)par1EntityMinecart.entityId * 493286711L;
036        i = i * i * 4392167121L + i * 98761L;
037        float f2 = (((float)(i >> 16 & 7L) + 0.5F) / 8.0F - 0.5F) * 0.004F;
038        float f3 = (((float)(i >> 20 & 7L) + 0.5F) / 8.0F - 0.5F) * 0.004F;
039        float f4 = (((float)(i >> 24 & 7L) + 0.5F) / 8.0F - 0.5F) * 0.004F;
040        GL11.glTranslatef(f2, f3, f4);
041        double d3 = par1EntityMinecart.lastTickPosX + (par1EntityMinecart.posX - par1EntityMinecart.lastTickPosX) * (double)par9;
042        double d4 = par1EntityMinecart.lastTickPosY + (par1EntityMinecart.posY - par1EntityMinecart.lastTickPosY) * (double)par9;
043        double d5 = par1EntityMinecart.lastTickPosZ + (par1EntityMinecart.posZ - par1EntityMinecart.lastTickPosZ) * (double)par9;
044        double d6 = 0.30000001192092896D;
045        Vec3 vec3 = par1EntityMinecart.func_70489_a(d3, d4, d5);
046        float f5 = par1EntityMinecart.prevRotationPitch + (par1EntityMinecart.rotationPitch - par1EntityMinecart.prevRotationPitch) * par9;
047
048        if (vec3 != null)
049        {
050            Vec3 vec31 = par1EntityMinecart.func_70495_a(d3, d4, d5, d6);
051            Vec3 vec32 = par1EntityMinecart.func_70495_a(d3, d4, d5, -d6);
052
053            if (vec31 == null)
054            {
055                vec31 = vec3;
056            }
057
058            if (vec32 == null)
059            {
060                vec32 = vec3;
061            }
062
063            par2 += vec3.xCoord - d3;
064            par4 += (vec31.yCoord + vec32.yCoord) / 2.0D - d4;
065            par6 += vec3.zCoord - d5;
066            Vec3 vec33 = vec32.addVector(-vec31.xCoord, -vec31.yCoord, -vec31.zCoord);
067
068            if (vec33.lengthVector() != 0.0D)
069            {
070                vec33 = vec33.normalize();
071                par8 = (float)(Math.atan2(vec33.zCoord, vec33.xCoord) * 180.0D / Math.PI);
072                f5 = (float)(Math.atan(vec33.yCoord) * 73.0D);
073            }
074        }
075
076        GL11.glTranslatef((float)par2, (float)par4, (float)par6);
077        GL11.glRotatef(180.0F - par8, 0.0F, 1.0F, 0.0F);
078        GL11.glRotatef(-f5, 0.0F, 0.0F, 1.0F);
079        float f6 = (float)par1EntityMinecart.getRollingAmplitude() - par9;
080        float f7 = (float)par1EntityMinecart.getDamage() - par9;
081
082        if (f7 < 0.0F)
083        {
084            f7 = 0.0F;
085        }
086
087        if (f6 > 0.0F)
088        {
089            GL11.glRotatef(MathHelper.sin(f6) * f6 * f7 / 10.0F * (float)par1EntityMinecart.getRollingDirection(), 1.0F, 0.0F, 0.0F);
090        }
091
092        int j = par1EntityMinecart.func_94099_q();
093        Block block = par1EntityMinecart.func_94089_m();
094        int k = par1EntityMinecart.func_94098_o();
095
096        if (block != null)
097        {
098            GL11.glPushMatrix();
099            this.loadTexture("/terrain.png");
100            float f8 = 0.75F;
101            GL11.glScalef(f8, f8, f8);
102            GL11.glTranslatef(0.0F, (float)j / 16.0F, 0.0F);
103            this.func_94144_a(par1EntityMinecart, par9, block, k);
104            GL11.glPopMatrix();
105            GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
106        }
107
108        this.loadTexture("/item/cart.png");
109        GL11.glScalef(-1.0F, -1.0F, 1.0F);
110        this.modelMinecart.render(par1EntityMinecart, 0.0F, 0.0F, -0.1F, 0.0F, 0.0F, 0.0625F);
111        GL11.glPopMatrix();
112    }
113
114    protected void func_94144_a(EntityMinecart par1EntityMinecart, float par2, Block par3Block, int par4)
115    {
116        float f1 = par1EntityMinecart.getBrightness(par2);
117        GL11.glPushMatrix();
118        this.field_94145_f.renderBlockAsItem(par3Block, par4, f1);
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}