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 the * Botania License: http://botaniamod.net/license.php * * File Created @ [Jan 19, 2014, 5:40:38 PM (GMT)] */ package vazkii.botania.client.core.helper; import java.util.List; import java.util.Random; import org.lwjgl.opengl.GL11; import net.minecraft.client.Minecraft; import net.minecraft.client.gui.FontRenderer; import net.minecraft.client.renderer.GlStateManager; import net.minecraft.client.renderer.Tessellator; import net.minecraft.client.renderer.VertexBuffer; import net.minecraft.client.renderer.vertex.DefaultVertexFormats; import net.minecraft.client.settings.KeyBinding; import net.minecraft.item.ItemStack; import net.minecraft.util.ResourceLocation; import vazkii.botania.client.core.handler.ClientTickHandler; import vazkii.botania.client.lib.LibResources; public final class RenderHelper { public static void renderTooltip(int x, int y, List<String> tooltipData) { int color = 0x505000ff; int color2 = 0xf0100010; renderTooltip(x, y, tooltipData, color, color2); } public static void renderTooltipOrange(int x, int y, List<String> tooltipData) { int color = 0x50a06600; int color2 = 0xf01e1200; renderTooltip(x, y, tooltipData, color, color2); } public static void renderTooltipGreen(int x, int y, List<String> tooltipData) { int color = 0x5000a000; int color2 = 0xf0001e00; renderTooltip(x, y, tooltipData, color, color2); } public static void renderTooltip(int x, int y, List<String> tooltipData, int color, int color2) { boolean lighting = GL11.glGetBoolean(GL11.GL_LIGHTING); if (lighting) net.minecraft.client.renderer.RenderHelper.disableStandardItemLighting(); if (!tooltipData.isEmpty()) { int var5 = 0; int var6; int var7; FontRenderer fontRenderer = Minecraft.getMinecraft().fontRendererObj; for (var6 = 0; var6 < tooltipData.size(); ++var6) { var7 = fontRenderer.getStringWidth(tooltipData.get(var6)); if (var7 > var5) var5 = var7; } var6 = x + 12; var7 = y - 12; int var9 = 8; if (tooltipData.size() > 1) var9 += 2 + (tooltipData.size() - 1) * 10; float z = 300F; drawGradientRect(var6 - 3, var7 - 4, z, var6 + var5 + 3, var7 - 3, color2, color2); drawGradientRect(var6 - 3, var7 + var9 + 3, z, var6 + var5 + 3, var7 + var9 + 4, color2, color2); drawGradientRect(var6 - 3, var7 - 3, z, var6 + var5 + 3, var7 + var9 + 3, color2, color2); drawGradientRect(var6 - 4, var7 - 3, z, var6 - 3, var7 + var9 + 3, color2, color2); drawGradientRect(var6 + var5 + 3, var7 - 3, z, var6 + var5 + 4, var7 + var9 + 3, color2, color2); int var12 = (color & 0xFFFFFF) >> 1 | color & -16777216; drawGradientRect(var6 - 3, var7 - 3 + 1, z, var6 - 3 + 1, var7 + var9 + 3 - 1, color, var12); drawGradientRect(var6 + var5 + 2, var7 - 3 + 1, z, var6 + var5 + 3, var7 + var9 + 3 - 1, color, var12); drawGradientRect(var6 - 3, var7 - 3, z, var6 + var5 + 3, var7 - 3 + 1, color, color); drawGradientRect(var6 - 3, var7 + var9 + 2, z, var6 + var5 + 3, var7 + var9 + 3, var12, var12); GlStateManager.disableDepth(); for (int var13 = 0; var13 < tooltipData.size(); ++var13) { String var14 = tooltipData.get(var13); fontRenderer.drawStringWithShadow(var14, var6, var7, -1); if (var13 == 0) var7 += 2; var7 += 10; } GlStateManager.enableDepth(); } if (!lighting) net.minecraft.client.renderer.RenderHelper.disableStandardItemLighting(); GlStateManager.color(1F, 1F, 1F, 1F); } public static void drawGradientRect(int par1, int par2, float z, int par3, int par4, int par5, int par6) { float var7 = (par5 >> 24 & 255) / 255F; float var8 = (par5 >> 16 & 255) / 255F; float var9 = (par5 >> 8 & 255) / 255F; float var10 = (par5 & 255) / 255F; float var11 = (par6 >> 24 & 255) / 255F; float var12 = (par6 >> 16 & 255) / 255F; float var13 = (par6 >> 8 & 255) / 255F; float var14 = (par6 & 255) / 255F; GlStateManager.disableTexture2D(); GlStateManager.enableBlend(); GlStateManager.disableAlpha(); GlStateManager.blendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA); GlStateManager.shadeModel(GL11.GL_SMOOTH); Tessellator var15 = Tessellator.getInstance(); var15.getBuffer().begin(GL11.GL_QUADS, DefaultVertexFormats.POSITION_COLOR); var15.getBuffer().pos(par3, par2, z).color(var8, var9, var10, var7).endVertex(); var15.getBuffer().pos(par1, par2, z).color(var8, var9, var10, var7).endVertex(); var15.getBuffer().pos(par1, par4, z).color(var12, var13, var14, var11).endVertex(); var15.getBuffer().pos(par3, par4, z).color(var12, var13, var14, var11).endVertex(); var15.draw(); GlStateManager.shadeModel(GL11.GL_FLAT); GlStateManager.disableBlend(); GlStateManager.enableAlpha(); GlStateManager.enableTexture2D(); } public static void drawTexturedModalRect(int par1, int par2, float z, int par3, int par4, int par5, int par6) { drawTexturedModalRect(par1, par2, z, par3, par4, par5, par6, 0.00390625F, 0.00390625F); } public static void drawTexturedModalRect(int par1, int par2, float z, int par3, int par4, int par5, int par6, float f, float f1) { Tessellator tessellator = Tessellator.getInstance(); tessellator.getBuffer().begin(GL11.GL_QUADS, DefaultVertexFormats.POSITION_TEX); tessellator.getBuffer().pos(par1, par2 + par6, z).tex(par3 * f, (par4 + par6) * f1).endVertex(); tessellator.getBuffer().pos(par1 + par5, par2 + par6, z).tex((par3 + par5) * f, (par4 + par6) * f1) .endVertex(); tessellator.getBuffer().pos(par1 + par5, par2, z).tex((par3 + par5) * f, par4 * f1).endVertex(); tessellator.getBuffer().pos(par1, par2, z).tex(par3 * f, par4 * f1).endVertex(); tessellator.draw(); } public static void renderStar(int color, float xScale, float yScale, float zScale, long seed) { Tessellator tessellator = Tessellator.getInstance(); int ticks = ClientTickHandler.ticksInGame % 200; if (ticks >= 100) ticks = 200 - ticks - 1; float f1 = ticks / 200F; float f2 = 0F; if (f1 > 0.7F) f2 = (f1 - 0.7F) / 0.2F; Random random = new Random(seed); GlStateManager.pushMatrix(); GlStateManager.disableTexture2D(); GlStateManager.shadeModel(GL11.GL_SMOOTH); GlStateManager.enableBlend(); GlStateManager.blendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE); GlStateManager.disableAlpha(); GlStateManager.enableCull(); GlStateManager.depthMask(false); GlStateManager.scale(xScale, yScale, zScale); for (int i = 0; i < (f1 + f1 * f1) / 2F * 90F + 30F; i++) { GlStateManager.rotate(random.nextFloat() * 360F, 1F, 0F, 0F); GlStateManager.rotate(random.nextFloat() * 360F, 0F, 1F, 0F); GlStateManager.rotate(random.nextFloat() * 360F, 0F, 0F, 1F); GlStateManager.rotate(random.nextFloat() * 360F, 1F, 0F, 0F); GlStateManager.rotate(random.nextFloat() * 360F, 0F, 1F, 0F); GlStateManager.rotate(random.nextFloat() * 360F + f1 * 90F, 0F, 0F, 1F); tessellator.getBuffer().begin(GL11.GL_TRIANGLE_FAN, DefaultVertexFormats.POSITION_COLOR); float f3 = random.nextFloat() * 20F + 5F + f2 * 10F; float f4 = random.nextFloat() * 2F + 1F + f2 * 2F; float r = ((color & 0xFF0000) >> 16) / 255F; float g = ((color & 0xFF00) >> 8) / 255F; float b = (color & 0xFF) / 255F; tessellator.getBuffer().pos(0, 0, 0).color(r, g, b, 1F - f2).endVertex(); tessellator.getBuffer().pos(-0.866D * f4, f3, -0.5F * f4).color(0, 0, 0, 0).endVertex(); tessellator.getBuffer().pos(0.866D * f4, f3, -0.5F * f4).color(0, 0, 0, 0).endVertex(); tessellator.getBuffer().pos(0, f3, 1F * f4).color(0, 0, 0, 0).endVertex(); tessellator.getBuffer().pos(-0.866D * f4, f3, -0.5F * f4).color(0, 0, 0, 0).endVertex(); tessellator.draw(); } GlStateManager.depthMask(true); GlStateManager.disableCull(); GlStateManager.disableBlend(); GlStateManager.shadeModel(GL11.GL_FLAT); GlStateManager.color(1F, 1F, 1F, 1F); GlStateManager.enableTexture2D(); GlStateManager.enableAlpha(); GlStateManager.popMatrix(); } public static void renderProgressPie(int x, int y, float progress, ItemStack stack) { Minecraft mc = Minecraft.getMinecraft(); mc.getRenderItem().renderItemAndEffectIntoGUI(stack, x, y); GlStateManager.clear(GL11.GL_DEPTH_BUFFER_BIT); GL11.glEnable(GL11.GL_STENCIL_TEST); GlStateManager.colorMask(false, false, false, false); GlStateManager.depthMask(false); GL11.glStencilFunc(GL11.GL_NEVER, 1, 0xFF); GL11.glStencilOp(GL11.GL_REPLACE, GL11.GL_KEEP, GL11.GL_KEEP); GL11.glStencilMask(0xFF); mc.getRenderItem().renderItemAndEffectIntoGUI(stack, x, y); mc.renderEngine.bindTexture(new ResourceLocation(LibResources.GUI_MANA_HUD)); int r = 10; int centerX = x + 8; int centerY = y + 8; int degs = (int) (360 * progress); float a = 0.5F + 0.2F * ((float) Math.cos((double) (ClientTickHandler.ticksInGame + ClientTickHandler.partialTicks) / 10) * 0.5F + 0.5F); GlStateManager.disableLighting(); GlStateManager.disableTexture2D(); GlStateManager.shadeModel(GL11.GL_SMOOTH); GlStateManager.enableBlend(); GlStateManager.blendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA); GlStateManager.colorMask(true, true, true, true); GlStateManager.depthMask(true); GL11.glStencilMask(0x00); GL11.glStencilFunc(GL11.GL_EQUAL, 1, 0xFF); VertexBuffer buf = Tessellator.getInstance().getBuffer(); buf.begin(GL11.GL_TRIANGLE_FAN, DefaultVertexFormats.POSITION_COLOR); buf.pos(centerX, centerY, 0).color(0, 0.5F, 0.5F, a).endVertex(); for (int i = degs; i > 0; i--) { double rad = (i - 90) / 180F * Math.PI; buf.pos(centerX + Math.cos(rad) * r, centerY + Math.sin(rad) * r, 0).color(0F, 1F, 0.5F, a).endVertex(); } buf.pos(centerX, centerY, 0).color(0F, 1F, 0.5F, a).endVertex(); Tessellator.getInstance().draw(); GlStateManager.disableBlend(); GlStateManager.enableTexture2D(); GlStateManager.shadeModel(GL11.GL_FLAT); GL11.glDisable(GL11.GL_STENCIL_TEST); } public static String getKeyDisplayString(String keyName) { String key = null; KeyBinding[] keys = Minecraft.getMinecraft().gameSettings.keyBindings; for (KeyBinding otherKey : keys) if (otherKey.getKeyDescription().equals(keyName)) { key = otherKey.getDisplayName(); break; } return key; } }