Java tutorial
/** * This class was created by <Vazkii>. It's distributed as * part of the Botania Mod. Get the Source Code in github: * https://github.com/Vazkii/Botania * * Botania is Open Source and distributed under a * Creative Commons Attribution-NonCommercial-ShareAlike 3.0 License * (http://creativecommons.org/licenses/by-nc-sa/3.0/deed.en_GB) * * File Created @ [Aug 21, 2014, 5:53:22 PM (GMT)] */ package vazkii.botania.client.render.entity; import java.util.Random; import net.minecraft.client.renderer.Tessellator; import net.minecraft.client.renderer.entity.RenderEntity; import net.minecraft.client.renderer.texture.TextureMap; import net.minecraft.entity.Entity; import net.minecraft.util.IIcon; import net.minecraft.util.ResourceLocation; import org.lwjgl.opengl.GL11; import org.lwjgl.opengl.GL12; import vazkii.botania.client.core.handler.ClientTickHandler; import vazkii.botania.common.entity.EntitySpark; import vazkii.botania.common.item.ItemSpark; import vazkii.botania.common.item.ItemSparkUpgrade; public class RenderSpark extends RenderEntity { @Override public void doRender(Entity par1Entity, double par2, double par4, double par6, float par8, float par9) { EntitySpark spark = (EntitySpark) par1Entity; IIcon iicon = ItemSpark.worldIcon; GL11.glPushMatrix(); GL11.glTranslatef((float) par2, (float) par4, (float) par6); GL11.glEnable(GL12.GL_RESCALE_NORMAL); GL11.glEnable(GL11.GL_BLEND); GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA); GL11.glAlphaFunc(GL11.GL_GREATER, 0.05F); int time = ClientTickHandler.ticksInGame; time += new Random(par1Entity.getEntityId()).nextInt(); GL11.glColor4f(1F, 1F, 1F, 0.7F + 0.3F * (float) (Math.sin(time / 5.0) + 0.5) * 2); float scale = 0.75F + 0.1F * (float) Math.sin((double) time / 10); GL11.glScalef(scale, scale, scale); bindEntityTexture(par1Entity); Tessellator tessellator = Tessellator.instance; float r = 180.0F - renderManager.playerViewY; GL11.glRotatef(r, 0.0F, 1.0F, 0.0F); GL11.glRotatef(25F * (float) Math.sin((double) time / 15), 1F, 0F, 0F); func_77026_a(tessellator, iicon); int upgrade = spark.getUpgrade() - 1; if (upgrade >= 0 && upgrade < ItemSparkUpgrade.worldIcons.length) { GL11.glTranslatef(-0.02F + (float) Math.sin((double) time / 20) * 0.2F, 0.24F + (float) Math.cos((double) time / 20) * 0.2F, 0.005F); GL11.glScalef(0.2F, 0.2F, 0.2F); func_77026_a(tessellator, ItemSparkUpgrade.worldIcons[upgrade]); } GL11.glRotatef(-r, 0.0F, 1.0F, 0.0F); GL11.glDisable(GL11.GL_BLEND); GL11.glDisable(GL12.GL_RESCALE_NORMAL); GL11.glPopMatrix(); } @Override protected ResourceLocation getEntityTexture(Entity p_110775_1_) { return TextureMap.locationItemsTexture; } private void func_77026_a(Tessellator p_77026_1_, IIcon p_77026_2_) { float f = p_77026_2_.getMinU(); float f1 = p_77026_2_.getMaxU(); float f2 = p_77026_2_.getMinV(); float f3 = p_77026_2_.getMaxV(); float f4 = 1.0F; float f5 = 0.5F; float f6 = 0.25F; p_77026_1_.startDrawingQuads(); p_77026_1_.setNormal(0.0F, 1.0F, 0.0F); p_77026_1_.setBrightness(240); p_77026_1_.addVertexWithUV(0.0F - f5, 0.0F - f6, 0.0D, f, f3); p_77026_1_.addVertexWithUV(f4 - f5, 0.0F - f6, 0.0D, f1, f3); p_77026_1_.addVertexWithUV(f4 - f5, f4 - f6, 0.0D, f1, f2); p_77026_1_.addVertexWithUV(0.0F - f5, f4 - f6, 0.0D, f, f2); p_77026_1_.draw(); } }