Java tutorial
package com.builtbroken.icbm.content.fragments; import com.builtbroken.mc.lib.render.RenderUtility; import cpw.mods.fml.relauncher.Side; import cpw.mods.fml.relauncher.SideOnly; import net.minecraft.client.renderer.Tessellator; import net.minecraft.client.renderer.entity.Render; import net.minecraft.client.renderer.texture.TextureMap; import net.minecraft.entity.Entity; import net.minecraft.init.Blocks; import net.minecraft.init.Items; import net.minecraft.util.IIcon; import net.minecraft.util.ResourceLocation; import org.lwjgl.opengl.GL11; import org.lwjgl.opengl.GL12; /** * @see <a href="https://github.com/BuiltBrokenModding/VoltzEngine/blob/development/license.md">License</a> for what you can and can't do with the code. * Created by Dark(DarkGuardsman, Robert) on 12/17/2016. */ @SideOnly(Side.CLIENT) public class RenderFragment extends Render { /** Backup texture */ private static final ResourceLocation arrowTextures = new ResourceLocation("textures/entity/arrow.png"); public void doRender(EntityFragment entity, double xx, double yy, double zz, float p_76986_8_, float p_76986_9_) { FragmentType type = entity.fragmentType; if (type == FragmentType.BLOCK) { GL11.glPushMatrix(); GL11.glTranslated(xx, yy, zz); RenderUtility.renderCube(entity.renderShape.toAABB(), entity.fragmentMaterial == null ? Blocks.stone : entity.fragmentMaterial); GL11.glPopMatrix(); } else if (type == FragmentType.BLAZE) { doRenderFireBall(entity, xx, yy, zz, p_76986_8_, p_76986_9_, 0.3f); } else { this.bindEntityTexture(entity); doRenderArrow(entity, xx, yy, zz, p_76986_8_, p_76986_9_); } } public void doRenderFireBall(EntityFragment entity, double xx, double yy, double zz, float p_76986_8_, float p_76986_9_, float scale) { GL11.glPushMatrix(); this.renderManager.renderEngine.bindTexture(TextureMap.locationItemsTexture); GL11.glTranslatef((float) xx, (float) yy, (float) zz); GL11.glEnable(GL12.GL_RESCALE_NORMAL); GL11.glScalef(scale / 1.0F, scale / 1.0F, scale / 1.0F); IIcon iicon = Items.fire_charge.getIconFromDamage(0); Tessellator tessellator = Tessellator.instance; float minU = iicon.getMinU(); float maxU = iicon.getMaxU(); float minV = iicon.getMinV(); float maxV = iicon.getMaxV(); float f7 = 1.0F; float f8 = 0.5F; float f9 = 0.25F; GL11.glRotatef(180.0F - this.renderManager.playerViewY, 0.0F, 1.0F, 0.0F); GL11.glRotatef(-this.renderManager.playerViewX, 1.0F, 0.0F, 0.0F); tessellator.startDrawingQuads(); tessellator.setNormal(0.0F, 1.0F, 0.0F); tessellator.addVertexWithUV((double) (0.0F - f8), (double) (0.0F - f9), 0.0D, (double) minU, (double) maxV); tessellator.addVertexWithUV((double) (f7 - f8), (double) (0.0F - f9), 0.0D, (double) maxU, (double) maxV); tessellator.addVertexWithUV((double) (f7 - f8), (double) (1.0F - f9), 0.0D, (double) maxU, (double) minV); tessellator.addVertexWithUV((double) (0.0F - f8), (double) (1.0F - f9), 0.0D, (double) minU, (double) minV); tessellator.draw(); GL11.glDisable(GL12.GL_RESCALE_NORMAL); GL11.glPopMatrix(); } private void doRenderArrow(EntityFragment entity, double xx, double yy, double zz, float p_76986_8_, float p_76986_9_) { GL11.glPushMatrix(); GL11.glTranslatef((float) xx, (float) yy, (float) zz); GL11.glRotatef(entity.prevRotationYaw + (entity.rotationYaw - entity.prevRotationYaw) * p_76986_9_ - 90.0F, 0.0F, 1.0F, 0.0F); GL11.glRotatef(entity.prevRotationPitch + (entity.rotationPitch - entity.prevRotationPitch) * p_76986_9_, 0.0F, 0.0F, 1.0F); Tessellator tessellator = Tessellator.instance; byte b0 = 0; float f2 = 0.0F; float f3 = 0.5F; float f4 = (float) (0 + b0 * 10) / 32.0F; float f5 = (float) (5 + b0 * 10) / 32.0F; float f6 = 0.0F; float f7 = 0.15625F; float f8 = (float) (5 + b0 * 10) / 32.0F; float f9 = (float) (10 + b0 * 10) / 32.0F; float f10 = 0.05625F; GL11.glEnable(GL12.GL_RESCALE_NORMAL); GL11.glRotatef(45.0F, 1.0F, 0.0F, 0.0F); GL11.glScalef(f10, f10, f10); GL11.glTranslatef(-4.0F, 0.0F, 0.0F); GL11.glNormal3f(f10, 0.0F, 0.0F); tessellator.startDrawingQuads(); tessellator.addVertexWithUV(-7.0D, -2.0D, -2.0D, (double) f6, (double) f8); tessellator.addVertexWithUV(-7.0D, -2.0D, 2.0D, (double) f7, (double) f8); tessellator.addVertexWithUV(-7.0D, 2.0D, 2.0D, (double) f7, (double) f9); tessellator.addVertexWithUV(-7.0D, 2.0D, -2.0D, (double) f6, (double) f9); tessellator.draw(); GL11.glNormal3f(-f10, 0.0F, 0.0F); tessellator.startDrawingQuads(); tessellator.addVertexWithUV(-7.0D, 2.0D, -2.0D, (double) f6, (double) f8); tessellator.addVertexWithUV(-7.0D, 2.0D, 2.0D, (double) f7, (double) f8); tessellator.addVertexWithUV(-7.0D, -2.0D, 2.0D, (double) f7, (double) f9); tessellator.addVertexWithUV(-7.0D, -2.0D, -2.0D, (double) f6, (double) f9); tessellator.draw(); for (int i = 0; i < 4; ++i) { GL11.glRotatef(90.0F, 1.0F, 0.0F, 0.0F); GL11.glNormal3f(0.0F, 0.0F, f10); tessellator.startDrawingQuads(); tessellator.addVertexWithUV(-8.0D, -2.0D, 0.0D, (double) f2, (double) f4); tessellator.addVertexWithUV(8.0D, -2.0D, 0.0D, (double) f3, (double) f4); tessellator.addVertexWithUV(8.0D, 2.0D, 0.0D, (double) f3, (double) f5); tessellator.addVertexWithUV(-8.0D, 2.0D, 0.0D, (double) f2, (double) f5); tessellator.draw(); } GL11.glDisable(GL12.GL_RESCALE_NORMAL); GL11.glPopMatrix(); } /** * Returns the location of an entity's texture. Doesn't seem to be called unless you call Render.bindEntityTexture. */ protected ResourceLocation getEntityTexture(Entity entity) { return arrowTextures; } /** * Actually renders the given argument. This is a synthetic bridge method, always casting down its argument and then * handing it off to a worker function which does the actual work. In all probabilty, the class Render is generic * (Render<T extends Entity) and this method has signature public void func_76986_a(T entity, double d, double d1, * double d2, float f, float f1). But JAD is pre 1.5 so doesn't do that. */ public void doRender(Entity p_76986_1_, double p_76986_2_, double p_76986_4_, double p_76986_6_, float p_76986_8_, float p_76986_9_) { this.doRender((EntityFragment) p_76986_1_, p_76986_2_, p_76986_4_, p_76986_6_, p_76986_8_, p_76986_9_); } }