Java tutorial
/******************************************************************************* * Copyright 2015 SteveKunG - More Planets Mod * * This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Public License. * To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0/. ******************************************************************************/ package stevekung.mods.moreplanets.planets.kapteynb.dimension.sky; import java.util.Random; import micdoodle8.mods.galacticraft.api.world.IGalacticraftWorldProvider; import micdoodle8.mods.galacticraft.core.util.ConfigManagerCore; import net.minecraft.client.Minecraft; import net.minecraft.client.multiplayer.WorldClient; import net.minecraft.client.renderer.GLAllocation; import net.minecraft.client.renderer.OpenGlHelper; import net.minecraft.client.renderer.RenderHelper; import net.minecraft.client.renderer.Tessellator; import net.minecraft.util.MathHelper; import net.minecraft.util.ResourceLocation; import net.minecraft.util.Vec3; import net.minecraftforge.client.IRenderHandler; import org.lwjgl.opengl.GL11; import org.lwjgl.opengl.GL12; import cpw.mods.fml.client.FMLClientHandler; public class SkyProviderKapteynB extends IRenderHandler { private ResourceLocation kapteynStarTexture = new ResourceLocation( "kapteynb:textures/gui/celestialbodies/kapteyn_star.png"); private ResourceLocation satelliteTexture = new ResourceLocation( "kapteynb:textures/gui/celestialbodies/satellite.png"); public int starList; public int glSkyList; public int glSkyList2; private float sunSize; public SkyProviderKapteynB(IGalacticraftWorldProvider marsProvider) { this.sunSize = 17.5F * marsProvider.getSolarSize(); int displayLists = GLAllocation.generateDisplayLists(3); this.starList = displayLists; this.glSkyList = displayLists + 1; this.glSkyList2 = displayLists + 2; // Bind stars to display list GL11.glPushMatrix(); GL11.glNewList(this.starList, GL11.GL_COMPILE); this.renderStars(); GL11.glEndList(); GL11.glPopMatrix(); Tessellator tessellator = Tessellator.instance; GL11.glNewList(this.glSkyList, GL11.GL_COMPILE); byte byte2 = 64; int i = 256 / byte2 + 2; float f = 16F; for (int j = -byte2 * i; j <= byte2 * i; j += byte2) { for (int l = -byte2 * i; l <= byte2 * i; l += byte2) { tessellator.startDrawingQuads(); tessellator.addVertex(j + 0, f, l + 0); tessellator.addVertex(j + byte2, f, l + 0); tessellator.addVertex(j + byte2, f, l + byte2); tessellator.addVertex(j + 0, f, l + byte2); tessellator.draw(); } } GL11.glEndList(); GL11.glNewList(this.glSkyList2, GL11.GL_COMPILE); f = -16F; tessellator.startDrawingQuads(); for (int k = -byte2 * i; k <= byte2 * i; k += byte2) { for (int i1 = -byte2 * i; i1 <= byte2 * i; i1 += byte2) { tessellator.addVertex(k + byte2, f, i1 + 0); tessellator.addVertex(k + 0, f, i1 + 0); tessellator.addVertex(k + 0, f, i1 + byte2); tessellator.addVertex(k + byte2, f, i1 + byte2); } } tessellator.draw(); GL11.glEndList(); } @Override public void render(float partialTicks, WorldClient world, Minecraft mc) { GL11.glDisable(GL11.GL_TEXTURE_2D); GL11.glDisable(GL12.GL_RESCALE_NORMAL); RenderHelper.enableStandardItemLighting(); GL11.glDisable(GL11.GL_TEXTURE_2D); Vec3 vec3 = world.getSkyColor(mc.renderViewEntity, partialTicks); float f1 = (float) vec3.xCoord; float f2 = (float) vec3.yCoord; float f3 = (float) vec3.zCoord; float f6; if (mc.gameSettings.anaglyph) { float f4 = (f1 * 30.0F + f2 * 59.0F + f3 * 11.0F) / 100.0F; float f5 = (f1 * 30.0F + f2 * 70.0F) / 100.0F; f6 = (f1 * 30.0F + f3 * 70.0F) / 100.0F; f1 = f4; f2 = f5; f3 = f6; } GL11.glColor3f(f1, f2, f3); Tessellator tessellator1 = Tessellator.instance; GL11.glDepthMask(false); GL11.glEnable(GL11.GL_FOG); GL11.glColor3f(f1, f2, f3); GL11.glCallList(this.glSkyList); GL11.glDisable(GL11.GL_FOG); GL11.glDisable(GL11.GL_ALPHA_TEST); GL11.glEnable(GL11.GL_BLEND); OpenGlHelper.glBlendFunc(770, 771, 1, 0); RenderHelper.disableStandardItemLighting(); float f7; float f8; float f9; float f10; float f18 = world.getStarBrightness(partialTicks); if (f18 > 0.0F) { GL11.glColor4f(f18, f18, f18, f18); GL11.glCallList(this.starList); } float[] afloat = new float[4]; GL11.glDisable(GL11.GL_TEXTURE_2D); GL11.glShadeModel(GL11.GL_SMOOTH); GL11.glPushMatrix(); GL11.glRotatef(-90.0F, 0.0F, 1.0F, 0.0F); GL11.glRotatef(world.getCelestialAngle(partialTicks) * 360.0F, 1.0F, 0.0F, 0.0F); afloat[0] = 255 / 255.0F; afloat[1] = 0 / 255.0F; afloat[2] = 0 / 255.0F; afloat[3] = 0.25F; f6 = afloat[0]; f7 = afloat[1]; f8 = afloat[2]; float f11; if (mc.gameSettings.anaglyph) { f9 = (f6 * 30.0F + f7 * 59.0F + f8 * 11.0F) / 100.0F; f10 = (f6 * 30.0F + f7 * 70.0F) / 100.0F; f11 = (f6 * 30.0F + f8 * 70.0F) / 100.0F; f6 = f9; f7 = f10; f8 = f11; } f18 = 1.0F - f18; tessellator1.startDrawing(GL11.GL_TRIANGLE_FAN); tessellator1.setColorRGBA_F(f6 * f18, f7 * f18, f8 * f18, afloat[3] * 2 / f18); tessellator1.addVertex(0.0D, 100.0D, 0.0D); tessellator1.setColorRGBA_F(afloat[0] * f18, afloat[1] * f18, afloat[2] * f18, 0.0F); // Render sun aura f10 = 20.0F; tessellator1.addVertex(-f10, 100.0D, -f10); tessellator1.addVertex(0, 100.0D, (double) -f10 * 1.5F); tessellator1.addVertex(f10, 100.0D, -f10); tessellator1.addVertex((double) f10 * 1.5F, 100.0D, 0); tessellator1.addVertex(f10, 100.0D, f10); tessellator1.addVertex(0, 100.0D, (double) f10 * 1.5F); tessellator1.addVertex(-f10, 100.0D, f10); tessellator1.addVertex((double) -f10 * 1.5F, 100.0D, 0); tessellator1.addVertex(-f10, 100.0D, -f10); tessellator1.draw(); tessellator1.startDrawing(GL11.GL_TRIANGLE_FAN); tessellator1.setColorRGBA_F(f6 * f18, f7 * f18, f8 * f18, afloat[3] * f18); tessellator1.addVertex(0.0D, 100.0D, 0.0D); tessellator1.setColorRGBA_F(afloat[0] * f18, afloat[1] * f18, afloat[2] * f18, 0.0F); // Render larger sun aura f10 = 40.0F; tessellator1.addVertex(-f10, 100.0D, -f10); tessellator1.addVertex(0, 100.0D, (double) -f10 * 1.5F); tessellator1.addVertex(f10, 100.0D, -f10); tessellator1.addVertex((double) f10 * 1.5F, 100.0D, 0); tessellator1.addVertex(f10, 100.0D, f10); tessellator1.addVertex(0, 100.0D, (double) f10 * 1.5F); tessellator1.addVertex(-f10, 100.0D, f10); tessellator1.addVertex((double) -f10 * 1.5F, 100.0D, 0); tessellator1.addVertex(-f10, 100.0D, -f10); tessellator1.draw(); GL11.glPopMatrix(); GL11.glShadeModel(GL11.GL_FLAT); GL11.glEnable(GL11.GL_TEXTURE_2D); OpenGlHelper.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE, GL11.GL_ONE, GL11.GL_ZERO); GL11.glPushMatrix(); f7 = 0.0F; f8 = 0.0F; f9 = 0.0F; GL11.glTranslatef(f7, f8, f9); GL11.glRotatef(-90.0F, 0.0F, 1.0F, 0.0F); GL11.glRotatef(world.getCelestialAngle(partialTicks) * 360.0F, 1.0F, 0.0F, 0.0F); GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA); GL11.glDisable(GL11.GL_TEXTURE_2D); GL11.glColor4f(0.0F, 0.0F, 0.0F, 1.0F); f10 = 15.1F / 3.5F; tessellator1.startDrawingQuads(); tessellator1.addVertex(-f10, 99.9D, -f10); tessellator1.addVertex(f10, 99.9D, -f10); tessellator1.addVertex(f10, 99.9D, f10); tessellator1.addVertex(-f10, 99.9D, f10); tessellator1.draw(); GL11.glEnable(GL11.GL_TEXTURE_2D); GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE); GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F); // Render sun GL11.glDisable(GL11.GL_TEXTURE_2D); GL11.glColor4f(0.0F, 0.0F, 0.0F, 1.0F); //Some blanking to conceal the stars f10 = this.sunSize / 3.5F; tessellator1.startDrawingQuads(); tessellator1.addVertex(-f10, 99.9D, -f10); tessellator1.addVertex(f10, 99.9D, -f10); tessellator1.addVertex(f10, 99.9D, f10); tessellator1.addVertex(-f10, 99.9D, f10); tessellator1.draw(); GL11.glEnable(GL11.GL_TEXTURE_2D); GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F); f10 = this.sunSize; mc.renderEngine.bindTexture(this.kapteynStarTexture); tessellator1.startDrawingQuads(); tessellator1.addVertexWithUV(-f10, 100.0D, -f10, 0.0D, 0.0D); tessellator1.addVertexWithUV(f10, 100.0D, -f10, 1.0D, 0.0D); tessellator1.addVertexWithUV(f10, 100.0D, f10, 1.0D, 1.0D); tessellator1.addVertexWithUV(-f10, 100.0D, f10, 0.0D, 1.0D); tessellator1.draw(); GL11.glDisable(GL11.GL_BLEND); GL11.glPopMatrix(); GL11.glPushMatrix(); // Satellite GL11.glEnable(GL11.GL_BLEND); GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA); f10 = 6.0F; GL11.glScalef(0.6F, 0.6F, 0.6F); GL11.glRotatef(200F, 1.0F, 0.0F, 0.0F); GL11.glRotatef(-800F, 20.0F, 10.0F, 0.0F); GL11.glColor4f(1.0F, 1.0F, 1.0F, 1F); FMLClientHandler.instance().getClient().renderEngine.bindTexture(this.satelliteTexture); tessellator1.startDrawingQuads(); tessellator1.addVertexWithUV(-f10, -100.0D, f10, 0, 1); tessellator1.addVertexWithUV(f10, -100.0D, f10, 1, 1); tessellator1.addVertexWithUV(f10, -100.0D, -f10, 1, 0); tessellator1.addVertexWithUV(-f10, -100.0D, -f10, 0, 0); tessellator1.draw(); GL11.glDisable(GL11.GL_TEXTURE_2D); GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F); GL11.glDisable(GL11.GL_BLEND); GL11.glEnable(GL11.GL_ALPHA_TEST); GL11.glEnable(GL11.GL_FOG); GL11.glPopMatrix(); GL11.glDisable(GL11.GL_TEXTURE_2D); GL11.glColor3f(0.0F, 0.0F, 0.0F); double d0 = mc.thePlayer.getPosition(partialTicks).yCoord - world.getHorizon(); if (d0 < 0.0D) { GL11.glPushMatrix(); GL11.glTranslatef(0.0F, 12.0F, 0.0F); GL11.glCallList(this.glSkyList2); GL11.glPopMatrix(); f8 = 1.0F; f9 = -((float) (d0 + 65.0D)); f10 = -f8; tessellator1.startDrawingQuads(); tessellator1.setColorRGBA_I(0, 255); tessellator1.addVertex(-f8, f9, f8); tessellator1.addVertex(f8, f9, f8); tessellator1.addVertex(f8, f10, f8); tessellator1.addVertex(-f8, f10, f8); tessellator1.addVertex(-f8, f10, -f8); tessellator1.addVertex(f8, f10, -f8); tessellator1.addVertex(f8, f9, -f8); tessellator1.addVertex(-f8, f9, -f8); tessellator1.addVertex(f8, f10, -f8); tessellator1.addVertex(f8, f10, f8); tessellator1.addVertex(f8, f9, f8); tessellator1.addVertex(f8, f9, -f8); tessellator1.addVertex(-f8, f9, -f8); tessellator1.addVertex(-f8, f9, f8); tessellator1.addVertex(-f8, f10, f8); tessellator1.addVertex(-f8, f10, -f8); tessellator1.addVertex(-f8, f10, -f8); tessellator1.addVertex(-f8, f10, f8); tessellator1.addVertex(f8, f10, f8); tessellator1.addVertex(f8, f10, -f8); tessellator1.draw(); } if (world.provider.isSkyColored()) { GL11.glColor3f(f1 * 0.2F + 0.04F, f2 * 0.2F + 0.04F, f3 * 0.6F + 0.1F); } else { GL11.glColor3f(f1, f2, f3); } GL11.glPushMatrix(); GL11.glTranslatef(0.0F, -((float) (d0 - 16.0D)), 0.0F); GL11.glCallList(this.glSkyList2); GL11.glPopMatrix(); GL11.glEnable(GL11.GL_TEXTURE_2D); GL11.glDepthMask(true); } private void renderStars() { Random rand = new Random(10842L); Tessellator var2 = Tessellator.instance; var2.startDrawingQuads(); for (int starIndex = 0; starIndex < (ConfigManagerCore.moreStars ? 35000 : 6000); ++starIndex) { double var4 = rand.nextFloat() * 2.0F - 1.0F; double var6 = rand.nextFloat() * 2.0F - 1.0F; double var8 = rand.nextFloat() * 2.0F - 1.0F; double var10 = 0.15F + rand.nextFloat() * 0.1F; double var12 = var4 * var4 + var6 * var6 + var8 * var8; if (var12 < 1.0D && var12 > 0.01D) { var12 = 1.0D / Math.sqrt(var12); var4 *= var12; var6 *= var12; var8 *= var12; double var14 = var4 * (ConfigManagerCore.moreStars ? rand.nextDouble() * 150D + 130D : 100.0D); double var16 = var6 * (ConfigManagerCore.moreStars ? rand.nextDouble() * 150D + 130D : 100.0D); double var18 = var8 * (ConfigManagerCore.moreStars ? rand.nextDouble() * 150D + 130D : 100.0D); double var20 = Math.atan2(var4, var8); double var22 = Math.sin(var20); double var24 = Math.cos(var20); double var26 = Math.atan2(Math.sqrt(var4 * var4 + var8 * var8), var6); double var28 = Math.sin(var26); double var30 = Math.cos(var26); double var32 = rand.nextDouble() * Math.PI * 2.0D; double var34 = Math.sin(var32); double var36 = Math.cos(var32); for (int var38 = 0; var38 < 4; ++var38) { double var39 = 0.0D; double var41 = ((var38 & 2) - 1) * var10; double var43 = ((var38 + 1 & 2) - 1) * var10; double var47 = var41 * var36 - var43 * var34; double var49 = var43 * var36 + var41 * var34; double var53 = var47 * var28 + var39 * var30; double var55 = var39 * var28 - var47 * var30; double var57 = var55 * var22 - var49 * var24; double var61 = var49 * var22 + var55 * var24; var2.addVertex(var14 + var57, var16 + var53, var18 + var61); } } } var2.draw(); } public float getSkyBrightness(float par1) { float var2 = FMLClientHandler.instance().getClient().theWorld.getCelestialAngle(par1); float var3 = 1.0F - (MathHelper.sin(var2 * (float) Math.PI * 2.0F) * 2.0F + 0.25F); if (var3 < 0.0F) { var3 = 0.0F; } if (var3 > 1.0F) { var3 = 1.0F; } return var3 * var3 * 1F; } }