001    package net.minecraft.src;
002    
003    import cpw.mods.fml.common.Side;
004    import cpw.mods.fml.common.asm.SideOnly;
005    import org.lwjgl.opengl.GL11;
006    
007    @SideOnly(Side.CLIENT)
008    public class RenderMinecart extends Render
009    {
010        /** instance of ModelMinecart for rendering */
011        protected ModelBase modelMinecart;
012    
013        public RenderMinecart()
014        {
015            this.shadowSize = 0.5F;
016            this.modelMinecart = new ModelMinecart();
017        }
018    
019        public void func_77012_a(EntityMinecart par1EntityMinecart, double par2, double par4, double par6, float par8, float par9)
020        {
021            GL11.glPushMatrix();
022            long var10 = (long)par1EntityMinecart.entityId * 493286711L;
023            var10 = var10 * var10 * 4392167121L + var10 * 98761L;
024            float var12 = (((float)(var10 >> 16 & 7L) + 0.5F) / 8.0F - 0.5F) * 0.004F;
025            float var13 = (((float)(var10 >> 20 & 7L) + 0.5F) / 8.0F - 0.5F) * 0.004F;
026            float var14 = (((float)(var10 >> 24 & 7L) + 0.5F) / 8.0F - 0.5F) * 0.004F;
027            GL11.glTranslatef(var12, var13, var14);
028            double var15 = par1EntityMinecart.lastTickPosX + (par1EntityMinecart.posX - par1EntityMinecart.lastTickPosX) * (double)par9;
029            double var17 = par1EntityMinecart.lastTickPosY + (par1EntityMinecart.posY - par1EntityMinecart.lastTickPosY) * (double)par9;
030            double var19 = par1EntityMinecart.lastTickPosZ + (par1EntityMinecart.posZ - par1EntityMinecart.lastTickPosZ) * (double)par9;
031            double var21 = 0.30000001192092896D;
032            Vec3 var23 = par1EntityMinecart.func_70489_a(var15, var17, var19);
033            float var24 = par1EntityMinecart.prevRotationPitch + (par1EntityMinecart.rotationPitch - par1EntityMinecart.prevRotationPitch) * par9;
034    
035            if (var23 != null)
036            {
037                Vec3 var25 = par1EntityMinecart.func_70495_a(var15, var17, var19, var21);
038                Vec3 var26 = par1EntityMinecart.func_70495_a(var15, var17, var19, -var21);
039    
040                if (var25 == null)
041                {
042                    var25 = var23;
043                }
044    
045                if (var26 == null)
046                {
047                    var26 = var23;
048                }
049    
050                par2 += var23.xCoord - var15;
051                par4 += (var25.yCoord + var26.yCoord) / 2.0D - var17;
052                par6 += var23.zCoord - var19;
053                Vec3 var27 = var26.addVector(-var25.xCoord, -var25.yCoord, -var25.zCoord);
054    
055                if (var27.lengthVector() != 0.0D)
056                {
057                    var27 = var27.normalize();
058                    par8 = (float)(Math.atan2(var27.zCoord, var27.xCoord) * 180.0D / Math.PI);
059                    var24 = (float)(Math.atan(var27.yCoord) * 73.0D);
060                }
061            }
062    
063            GL11.glTranslatef((float)par2, (float)par4, (float)par6);
064            GL11.glRotatef(180.0F - par8, 0.0F, 1.0F, 0.0F);
065            GL11.glRotatef(-var24, 0.0F, 0.0F, 1.0F);
066            float var28 = (float)par1EntityMinecart.func_70496_j() - par9;
067            float var30 = (float)par1EntityMinecart.getDamage() - par9;
068    
069            if (var30 < 0.0F)
070            {
071                var30 = 0.0F;
072            }
073    
074            if (var28 > 0.0F)
075            {
076                GL11.glRotatef(MathHelper.sin(var28) * var28 * var30 / 10.0F * (float)par1EntityMinecart.func_70493_k(), 1.0F, 0.0F, 0.0F);
077            }
078    
079            if (par1EntityMinecart.minecartType != 0)
080            {
081                this.loadTexture("/terrain.png");
082                float var29 = 0.75F;
083                GL11.glScalef(var29, var29, var29);
084    
085                if (par1EntityMinecart.minecartType == 1)
086                {
087                    GL11.glTranslatef(0.0F, 0.5F, 0.0F);
088                    (new RenderBlocks()).renderBlockAsItem(Block.chest, 0, par1EntityMinecart.getBrightness(par9));
089                    GL11.glRotatef(-90.0F, 0.0F, 1.0F, 0.0F);
090                    GL11.glTranslatef(0.5F, 0.0F, -0.5F);
091                    GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
092                }
093                else if (par1EntityMinecart.minecartType == 2)
094                {
095                    GL11.glTranslatef(0.0F, 0.3125F, 0.0F);
096                    (new RenderBlocks()).renderBlockAsItem(Block.stoneOvenIdle, 0, par1EntityMinecart.getBrightness(par9));
097                    GL11.glRotatef(-90.0F, 0.0F, 1.0F, 0.0F);
098                    GL11.glTranslatef(0.0F, -0.3125F, 0.0F);
099                    GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
100                }
101    
102                GL11.glScalef(1.0F / var29, 1.0F / var29, 1.0F / var29);
103            }
104    
105            this.loadTexture("/item/cart.png");
106            GL11.glScalef(-1.0F, -1.0F, 1.0F);
107            this.modelMinecart.render(par1EntityMinecart, 0.0F, 0.0F, -0.1F, 0.0F, 0.0F, 0.0625F);
108            GL11.glPopMatrix();
109        }
110    
111        /**
112         * Actually renders the given argument. This is a synthetic bridge method, always casting down its argument and then
113         * handing it off to a worker function which does the actual work. In all probabilty, the class Render is generic
114         * (Render<T extends Entity) and this method has signature public void doRender(T entity, double d, double d1,
115         * double d2, float f, float f1). But JAD is pre 1.5 so doesn't do that.
116         */
117        public void doRender(Entity par1Entity, double par2, double par4, double par6, float par8, float par9)
118        {
119            this.func_77012_a((EntityMinecart)par1Entity, par2, par4, par6, par8, par9);
120        }
121    }