001package net.minecraft.client.renderer.tileentity;
002
003import cpw.mods.fml.relauncher.Side;
004import cpw.mods.fml.relauncher.SideOnly;
005import java.nio.FloatBuffer;
006import java.util.Random;
007import net.minecraft.client.Minecraft;
008import net.minecraft.client.renderer.ActiveRenderInfo;
009import net.minecraft.client.renderer.GLAllocation;
010import net.minecraft.client.renderer.Tessellator;
011import net.minecraft.tileentity.TileEntity;
012import net.minecraft.tileentity.TileEntityEndPortal;
013import org.lwjgl.opengl.GL11;
014
015@SideOnly(Side.CLIENT)
016public class RenderEndPortal extends TileEntitySpecialRenderer
017{
018    FloatBuffer field_76908_a = GLAllocation.createDirectFloatBuffer(16);
019
020    /**
021     * Renders the End Portal.
022     */
023    public void renderEndPortalTileEntity(TileEntityEndPortal par1TileEntityEndPortal, double par2, double par4, double par6, float par8)
024    {
025        float f1 = (float)this.tileEntityRenderer.playerX;
026        float f2 = (float)this.tileEntityRenderer.playerY;
027        float f3 = (float)this.tileEntityRenderer.playerZ;
028        GL11.glDisable(GL11.GL_LIGHTING);
029        Random random = new Random(31100L);
030        float f4 = 0.75F;
031
032        for (int i = 0; i < 16; ++i)
033        {
034            GL11.glPushMatrix();
035            float f5 = (float)(16 - i);
036            float f6 = 0.0625F;
037            float f7 = 1.0F / (f5 + 1.0F);
038
039            if (i == 0)
040            {
041                this.bindTextureByName("/misc/tunnel.png");
042                f7 = 0.1F;
043                f5 = 65.0F;
044                f6 = 0.125F;
045                GL11.glEnable(GL11.GL_BLEND);
046                GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
047            }
048
049            if (i == 1)
050            {
051                this.bindTextureByName("/misc/particlefield.png");
052                GL11.glEnable(GL11.GL_BLEND);
053                GL11.glBlendFunc(GL11.GL_ONE, GL11.GL_ONE);
054                f6 = 0.5F;
055            }
056
057            float f8 = (float)(-(par4 + (double)f4));
058            float f9 = f8 + ActiveRenderInfo.objectY;
059            float f10 = f8 + f5 + ActiveRenderInfo.objectY;
060            float f11 = f9 / f10;
061            f11 += (float)(par4 + (double)f4);
062            GL11.glTranslatef(f1, f11, f3);
063            GL11.glTexGeni(GL11.GL_S, GL11.GL_TEXTURE_GEN_MODE, GL11.GL_OBJECT_LINEAR);
064            GL11.glTexGeni(GL11.GL_T, GL11.GL_TEXTURE_GEN_MODE, GL11.GL_OBJECT_LINEAR);
065            GL11.glTexGeni(GL11.GL_R, GL11.GL_TEXTURE_GEN_MODE, GL11.GL_OBJECT_LINEAR);
066            GL11.glTexGeni(GL11.GL_Q, GL11.GL_TEXTURE_GEN_MODE, GL11.GL_EYE_LINEAR);
067            GL11.glTexGen(GL11.GL_S, GL11.GL_OBJECT_PLANE, this.func_76907_a(1.0F, 0.0F, 0.0F, 0.0F));
068            GL11.glTexGen(GL11.GL_T, GL11.GL_OBJECT_PLANE, this.func_76907_a(0.0F, 0.0F, 1.0F, 0.0F));
069            GL11.glTexGen(GL11.GL_R, GL11.GL_OBJECT_PLANE, this.func_76907_a(0.0F, 0.0F, 0.0F, 1.0F));
070            GL11.glTexGen(GL11.GL_Q, GL11.GL_EYE_PLANE, this.func_76907_a(0.0F, 1.0F, 0.0F, 0.0F));
071            GL11.glEnable(GL11.GL_TEXTURE_GEN_S);
072            GL11.glEnable(GL11.GL_TEXTURE_GEN_T);
073            GL11.glEnable(GL11.GL_TEXTURE_GEN_R);
074            GL11.glEnable(GL11.GL_TEXTURE_GEN_Q);
075            GL11.glPopMatrix();
076            GL11.glMatrixMode(GL11.GL_TEXTURE);
077            GL11.glPushMatrix();
078            GL11.glLoadIdentity();
079            GL11.glTranslatef(0.0F, (float)(Minecraft.getSystemTime() % 700000L) / 700000.0F, 0.0F);
080            GL11.glScalef(f6, f6, f6);
081            GL11.glTranslatef(0.5F, 0.5F, 0.0F);
082            GL11.glRotatef((float)(i * i * 4321 + i * 9) * 2.0F, 0.0F, 0.0F, 1.0F);
083            GL11.glTranslatef(-0.5F, -0.5F, 0.0F);
084            GL11.glTranslatef(-f1, -f3, -f2);
085            f9 = f8 + ActiveRenderInfo.objectY;
086            GL11.glTranslatef(ActiveRenderInfo.objectX * f5 / f9, ActiveRenderInfo.objectZ * f5 / f9, -f2);
087            Tessellator tessellator = Tessellator.instance;
088            tessellator.startDrawingQuads();
089            f11 = random.nextFloat() * 0.5F + 0.1F;
090            float f12 = random.nextFloat() * 0.5F + 0.4F;
091            float f13 = random.nextFloat() * 0.5F + 0.5F;
092
093            if (i == 0)
094            {
095                f13 = 1.0F;
096                f12 = 1.0F;
097                f11 = 1.0F;
098            }
099
100            tessellator.setColorRGBA_F(f11 * f7, f12 * f7, f13 * f7, 1.0F);
101            tessellator.addVertex(par2, par4 + (double)f4, par6);
102            tessellator.addVertex(par2, par4 + (double)f4, par6 + 1.0D);
103            tessellator.addVertex(par2 + 1.0D, par4 + (double)f4, par6 + 1.0D);
104            tessellator.addVertex(par2 + 1.0D, par4 + (double)f4, par6);
105            tessellator.draw();
106            GL11.glPopMatrix();
107            GL11.glMatrixMode(GL11.GL_MODELVIEW);
108        }
109
110        GL11.glDisable(GL11.GL_BLEND);
111        GL11.glDisable(GL11.GL_TEXTURE_GEN_S);
112        GL11.glDisable(GL11.GL_TEXTURE_GEN_T);
113        GL11.glDisable(GL11.GL_TEXTURE_GEN_R);
114        GL11.glDisable(GL11.GL_TEXTURE_GEN_Q);
115        GL11.glEnable(GL11.GL_LIGHTING);
116    }
117
118    private FloatBuffer func_76907_a(float par1, float par2, float par3, float par4)
119    {
120        this.field_76908_a.clear();
121        this.field_76908_a.put(par1).put(par2).put(par3).put(par4);
122        this.field_76908_a.flip();
123        return this.field_76908_a;
124    }
125
126    public void renderTileEntityAt(TileEntity par1TileEntity, double par2, double par4, double par6, float par8)
127    {
128        this.renderEndPortalTileEntity((TileEntityEndPortal)par1TileEntity, par2, par4, par6, par8);
129    }
130}