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 @ [May 26, 2014, 4:05:50 PM (GMT)] */ package vazkii.botania.common.item.equipment.bauble; import java.util.ArrayList; import java.util.List; import javax.annotation.Nonnull; import org.lwjgl.opengl.GL11; import baubles.api.BaubleType; import baubles.api.BaublesApi; import net.minecraft.client.Minecraft; import net.minecraft.client.gui.Gui; import net.minecraft.client.gui.ScaledResolution; import net.minecraft.client.renderer.GlStateManager; import net.minecraft.client.renderer.OpenGlHelper; import net.minecraft.client.renderer.Tessellator; import net.minecraft.client.renderer.texture.TextureAtlasSprite; import net.minecraft.client.renderer.texture.TextureMap; import net.minecraft.client.renderer.vertex.DefaultVertexFormats; import net.minecraft.client.resources.I18n; import net.minecraft.creativetab.CreativeTabs; import net.minecraft.entity.EntityLivingBase; import net.minecraft.entity.player.EntityPlayer; import net.minecraft.entity.player.EntityPlayerMP; import net.minecraft.inventory.IInventory; import net.minecraft.item.Item; import net.minecraft.item.ItemStack; import net.minecraft.stats.Achievement; import net.minecraft.util.ResourceLocation; import net.minecraft.util.SoundCategory; import net.minecraftforge.common.MinecraftForge; import net.minecraftforge.event.entity.living.LivingEvent.LivingUpdateEvent; import net.minecraftforge.fml.common.eventhandler.SubscribeEvent; import net.minecraftforge.fml.common.gameevent.PlayerEvent; import net.minecraftforge.fml.relauncher.Side; import net.minecraftforge.fml.relauncher.SideOnly; import vazkii.botania.api.BotaniaAPI; import vazkii.botania.api.item.IBaubleRender; import vazkii.botania.api.mana.IManaUsingItem; import vazkii.botania.api.mana.ManaItemHandler; import vazkii.botania.api.sound.BotaniaSoundEvents; import vazkii.botania.client.core.handler.MiscellaneousIcons; import vazkii.botania.client.core.handler.ModelHandler; import vazkii.botania.client.core.helper.IconHelper; import vazkii.botania.client.core.helper.RenderHelper; import vazkii.botania.client.core.helper.ShaderHelper; import vazkii.botania.client.lib.LibResources; import vazkii.botania.common.Botania; import vazkii.botania.common.achievement.ICraftAchievement; import vazkii.botania.common.achievement.ModAchievements; import vazkii.botania.common.core.handler.ConfigHandler; import vazkii.botania.common.core.helper.ItemNBTHelper; import vazkii.botania.common.core.helper.StringObfuscator; import vazkii.botania.common.core.helper.Vector3; import vazkii.botania.common.item.ModItems; import vazkii.botania.common.lib.LibItemNames; public class ItemFlightTiara extends ItemBauble implements IManaUsingItem, IBaubleRender, ICraftAchievement { private static final ResourceLocation textureHud = new ResourceLocation(LibResources.GUI_HUD_ICONS); private static final ResourceLocation textureHalo = new ResourceLocation(LibResources.MISC_HALO); private static final String TAG_FLYING = "flying"; private static final String TAG_TIME_LEFT = "timeLeft"; private static final String TAG_INFINITE_FLIGHT = "infiniteFlight"; private static final String TAG_DASH_COOLDOWN = "dashCooldown"; private static final String TAG_IS_SPRINTING = "isSprinting"; public static final List<String> playersWithFlight = new ArrayList(); private static final int COST = 35; private static final int COST_OVERKILL = COST * 3; private static final int MAX_FLY_TIME = 1200; private static final int SUBTYPES = 8; public static final int WING_TYPES = 9; public static final String SUPER_AWESOME_HASH = "82F1EAD6A9B815E56C4F94C03C4BFE3E92CAA52AA79A40D753924BEF720FF868"; public ItemFlightTiara() { super(LibItemNames.FLIGHT_TIARA); MinecraftForge.EVENT_BUS.register(this); setHasSubtypes(true); } @Override public BaubleType getBaubleType(ItemStack arg0) { return BaubleType.HEAD; } @Override @SideOnly(Side.CLIENT) public void getSubItems(@Nonnull Item item, CreativeTabs tab, List<ItemStack> list) { for (int i = 0; i < SUBTYPES + 1; i++) list.add(new ItemStack(item, 1, i)); } @SideOnly(Side.CLIENT) @Override public void addHiddenTooltip(ItemStack par1ItemStack, EntityPlayer player, List<String> stacks, boolean par4) { super.addHiddenTooltip(par1ItemStack, player, stacks, par4); stacks.add(I18n.format("botania.wings" + par1ItemStack.getItemDamage())); } @Override public void onEquipped(ItemStack stack, EntityLivingBase player) { super.onEquipped(stack, player); if (stack.getItemDamage() != WING_TYPES && StringObfuscator.matchesHash(stack.getDisplayName(), SUPER_AWESOME_HASH)) { stack.setItemDamage(WING_TYPES); stack.getTagCompound().removeTag("display"); } } @Override public void onWornTick(ItemStack stack, EntityLivingBase player) { super.onWornTick(stack, player); if (player instanceof EntityPlayer) { EntityPlayer p = (EntityPlayer) player; boolean flying = p.capabilities.isFlying; boolean wasSprting = ItemNBTHelper.getBoolean(stack, TAG_IS_SPRINTING, false); boolean isSprinting = p.isSprinting(); if (isSprinting != wasSprting) ItemNBTHelper.setBoolean(stack, TAG_IS_SPRINTING, isSprinting); int time = ItemNBTHelper.getInt(stack, TAG_TIME_LEFT, MAX_FLY_TIME); int newTime = time; Vector3 look = new Vector3(p.getLookVec()).multiply(1, 0, 1).normalize(); if (flying) { if (time > 0 && !ItemNBTHelper.getBoolean(stack, TAG_INFINITE_FLIGHT, false)) newTime--; final int maxCd = 80; int cooldown = ItemNBTHelper.getInt(stack, TAG_DASH_COOLDOWN, 0); if (!wasSprting && isSprinting && cooldown == 0) { p.motionX += look.x; p.motionZ += look.z; p.worldObj.playSound(null, p.posX, p.posY, p.posZ, BotaniaSoundEvents.dash, SoundCategory.PLAYERS, 1F, 1F); ItemNBTHelper.setInt(stack, TAG_DASH_COOLDOWN, maxCd); } else if (cooldown > 0) { if (maxCd - cooldown < 2) player.moveRelative(0F, 1F, 5F); else if (maxCd - cooldown < 10) player.setSprinting(false); ItemNBTHelper.setInt(stack, TAG_DASH_COOLDOWN, cooldown - 2); if (player instanceof EntityPlayerMP) BotaniaAPI.internalHandler.sendBaubleUpdatePacket((EntityPlayerMP) player, 0); } } else if (!flying) { boolean doGlide = player.isSneaking() && !player.onGround && player.fallDistance >= 2F; if (time < MAX_FLY_TIME && player.ticksExisted % (doGlide ? 6 : 2) == 0) newTime++; if (doGlide) { player.motionY = Math.max(-0.15F, player.motionY); float mul = 0.6F; player.motionX = look.x * mul; player.motionZ = look.z * mul; player.fallDistance = 2F; } } ItemNBTHelper.setBoolean(stack, TAG_FLYING, flying); if (newTime != time) ItemNBTHelper.setInt(stack, TAG_TIME_LEFT, newTime); } } @SubscribeEvent public void updatePlayerFlyStatus(LivingUpdateEvent event) { if (event.getEntityLiving() instanceof EntityPlayer) { EntityPlayer player = (EntityPlayer) event.getEntityLiving(); ItemStack tiara = BaublesApi.getBaubles(player).getStackInSlot(4); int left = ItemNBTHelper.getInt(tiara, TAG_TIME_LEFT, MAX_FLY_TIME); if (playersWithFlight.contains(playerStr(player))) { if (shouldPlayerHaveFlight(player)) { player.capabilities.allowFlying = true; if (player.capabilities.isFlying) { if (!player.worldObj.isRemote) ManaItemHandler.requestManaExact(tiara, player, getCost(tiara, left), true); else if (Math.abs(player.motionX) > 0.1 || Math.abs(player.motionZ) > 0.1) { double x = event.getEntityLiving().posX - 0.5; double y = event.getEntityLiving().posY - 0.5; double z = event.getEntityLiving().posZ - 0.5; player.getGameProfile().getName(); float r = 1F; float g = 1F; float b = 1F; switch (tiara.getItemDamage()) { case 2: { r = 0.1F; g = 0.1F; b = 0.1F; break; } case 3: { r = 0F; g = 0.6F; break; } case 4: { g = 0.3F; b = 0.3F; break; } case 5: { r = 0.6F; g = 0F; b = 0.6F; break; } case 6: { r = 0.4F; g = 0F; b = 0F; break; } case 7: { r = 0.2F; g = 0.6F; b = 0.2F; break; } case 8: { r = 0.85F; g = 0.85F; b = 0F; break; } case 9: { r = 0F; b = 0F; break; } } for (int i = 0; i < 2; i++) Botania.proxy.sparkleFX(x + Math.random() * event.getEntityLiving().width, y + Math.random() * 0.4, z + Math.random() * event.getEntityLiving().width, r, g, b, 2F * (float) Math.random(), 20); } } } else { if (!player.isSpectator() && !player.capabilities.isCreativeMode) { player.capabilities.allowFlying = false; player.capabilities.isFlying = false; player.capabilities.disableDamage = false; } playersWithFlight.remove(playerStr(player)); } } else if (shouldPlayerHaveFlight(player)) { playersWithFlight.add(playerStr(player)); player.capabilities.allowFlying = true; } } } @SubscribeEvent public void playerLoggedOut(PlayerEvent.PlayerLoggedOutEvent event) { String username = event.player.getGameProfile().getName(); playersWithFlight.remove(username + ":false"); playersWithFlight.remove(username + ":true"); } public static String playerStr(EntityPlayer player) { return player.getGameProfile().getName() + ":" + player.worldObj.isRemote; } private boolean shouldPlayerHaveFlight(EntityPlayer player) { ItemStack armor = BaublesApi.getBaubles(player).getStackInSlot(4); if (armor != null && armor.getItem() == this) { int left = ItemNBTHelper.getInt(armor, TAG_TIME_LEFT, MAX_FLY_TIME); boolean flying = ItemNBTHelper.getBoolean(armor, TAG_FLYING, false); return (left > (flying ? 0 : MAX_FLY_TIME / 10) || player.inventory.hasItemStack(new ItemStack(ModItems.flugelEye))) && ManaItemHandler.requestManaExact(armor, player, getCost(armor, left), false); } return false; } public int getCost(ItemStack stack, int timeLeft) { return timeLeft <= 0 ? COST_OVERKILL : COST; } @Override public boolean usesMana(ItemStack stack) { return true; } @Override @SideOnly(Side.CLIENT) public void onPlayerBaubleRender(ItemStack stack, EntityPlayer player, RenderType type, float partialTicks) { int meta = stack.getItemDamage(); if (type == RenderType.BODY) { if (meta > 0 && meta <= MiscellaneousIcons.INSTANCE.tiaraWingIcons.length) { TextureAtlasSprite icon = MiscellaneousIcons.INSTANCE.tiaraWingIcons[meta - 1]; Minecraft.getMinecraft().renderEngine.bindTexture(TextureMap.LOCATION_BLOCKS_TEXTURE); boolean flying = player.capabilities.isFlying; float rz = 120F; float rx = 20F + (float) ((Math.sin((double) (player.ticksExisted + partialTicks) * (flying ? 0.4F : 0.2F)) + 0.5F) * (flying ? 30F : 5F)); float ry = 0F; float h = 0.2F; float i = 0.15F; float s = 1F; GlStateManager.pushMatrix(); GlStateManager.enableBlend(); GlStateManager.blendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA); GlStateManager.color(1F, 1F, 1F, 1F); int light = 15728880; int lightmapX = light % 65536; int lightmapY = light / 65536; float lbx = OpenGlHelper.lastBrightnessX; float lby = OpenGlHelper.lastBrightnessY; switch (meta) { case 1: { // Jibril h = 0.4F; break; } case 2: { // Sephiroth s = 1.3F; break; } case 3: { // Cirno h = -0.1F; rz = 0F; rx = 0F; i = 0.3F; break; } case 4: { // Phoenix rz = 180F; h = 0.5F; rx = 20F; ry = -(float) ((Math.sin((double) (player.ticksExisted + partialTicks) * (flying ? 0.4F : 0.2F)) + 0.6F) * (flying ? 30F : 5F)); OpenGlHelper.setLightmapTextureCoords(OpenGlHelper.lightmapTexUnit, lightmapX, lightmapY); break; } case 5: { // Kuroyukihime h = 0.8F; rz = 180F; ry = -rx; rx = 0F; s = 2F; break; } case 6: { // Random Devil rz = 150F; break; } case 7: { // Lyfa OpenGlHelper.setLightmapTextureCoords(OpenGlHelper.lightmapTexUnit, lightmapX, lightmapY); h = -0.1F; rz = 0F; ry = -rx; rx = 0F; GlStateManager.color(1F, 1F, 1F, 0.5F + (float) Math.cos((double) (player.ticksExisted + partialTicks) * 0.3F) * 0.2F); break; } case 8: { // Mega Ultra Chicken h = 0.1F; break; } case 9: { // The One OpenGlHelper.setLightmapTextureCoords(OpenGlHelper.lightmapTexUnit, lightmapX, lightmapY); rz = 180F; rx = 0F; s = 1.5F; h = 1.2F; GlStateManager.color(1F, 1F, 1F, 0.5F + (flying ? (float) Math.cos((double) (player.ticksExisted + partialTicks) * 0.3F) * 0.25F + 0.25F : 0F)); } } // account for padding in the texture float mul = 32F / 20F; s *= mul; float f = icon.getMinU(); float f1 = icon.getMaxU(); float f2 = icon.getMinV(); float f3 = icon.getMaxV(); float sr = 1F / s; Helper.rotateIfSneaking(player); GlStateManager.translate(0F, h, i); GlStateManager.rotate(rz, 0F, 0F, 1F); GlStateManager.rotate(rx, 1F, 0F, 0F); GlStateManager.rotate(ry, 0F, 1F, 0F); GlStateManager.scale(s, s, s); IconHelper.renderIconIn3D(Tessellator.getInstance(), f1, f2, f, f3, icon.getIconWidth(), icon.getIconHeight(), 1F / 32F); GlStateManager.scale(sr, sr, sr); GlStateManager.rotate(-ry, 0F, 1F, 0F); GlStateManager.rotate(-rx, 1F, 0F, 0F); GlStateManager.rotate(-rz, 0F, 0F, 1F); if (meta != 2) { // Sephiroth GlStateManager.scale(-1F, 1F, 1F); GlStateManager.rotate(rz, 0F, 0F, 1F); GlStateManager.rotate(rx, 1F, 0F, 0F); GlStateManager.rotate(ry, 0F, 1F, 0F); GlStateManager.scale(s, s, s); IconHelper.renderIconIn3D(Tessellator.getInstance(), f1, f2, f, f3, icon.getIconWidth(), icon.getIconHeight(), 1F / 32F); GlStateManager.scale(sr, sr, sr); GlStateManager.rotate(-ry, 1F, 0F, 0F); GlStateManager.rotate(-rx, 1F, 0F, 0F); GlStateManager.rotate(-rz, 0F, 0F, 1F); } GlStateManager.color(1F, 1F, 1F); GlStateManager.popMatrix(); OpenGlHelper.setLightmapTextureCoords(OpenGlHelper.lightmapTexUnit, lbx, lby); } } else if (meta == 1) // Jibril's Halo renderHalo(player, partialTicks); } @SideOnly(Side.CLIENT) public static void renderHalo(EntityPlayer player, float partialTicks) { GlStateManager.enableBlend(); GlStateManager.blendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA); GlStateManager.shadeModel(GL11.GL_SMOOTH); OpenGlHelper.setLightmapTextureCoords(OpenGlHelper.lightmapTexUnit, 240, 240); GlStateManager.disableLighting(); GlStateManager.disableCull(); GlStateManager.color(1F, 1F, 1F, 1F); Minecraft.getMinecraft().renderEngine.bindTexture(textureHalo); if (player != null) Helper.translateToHeadLevel(player); GlStateManager.translate(0, 1.5F, 0); GlStateManager.rotate(30, 1, 0, -1); GlStateManager.translate(-0.1F, -0.5F, -0.1F); if (player != null) GlStateManager.rotate(player.ticksExisted + partialTicks, 0, 1, 0); else GlStateManager.rotate(Botania.proxy.getWorldElapsedTicks(), 0, 1, 0); Tessellator tes = Tessellator.getInstance(); ShaderHelper.useShader(ShaderHelper.halo); tes.getBuffer().begin(GL11.GL_QUADS, DefaultVertexFormats.POSITION_TEX); tes.getBuffer().pos(-0.75, 0, -0.75).tex(0, 0).endVertex(); tes.getBuffer().pos(-0.75, 0, 0.75).tex(0, 1).endVertex(); tes.getBuffer().pos(0.75, 0, 0.75).tex(1, 1).endVertex(); tes.getBuffer().pos(0.75, 0, -0.75).tex(1, 0).endVertex(); tes.draw(); ShaderHelper.releaseShader(); GlStateManager.enableLighting(); GlStateManager.shadeModel(GL11.GL_FLAT); GlStateManager.enableCull(); } @SideOnly(Side.CLIENT) public static void renderHUD(ScaledResolution resolution, EntityPlayer player, ItemStack stack) { int u = Math.max(1, stack.getItemDamage()) * 9 - 9; int v = 0; Minecraft mc = Minecraft.getMinecraft(); mc.renderEngine.bindTexture(textureHud); int xo = resolution.getScaledWidth() / 2 + 10; int x = xo; int y = resolution.getScaledHeight() - ConfigHandler.flightBarHeight; if (player.getAir() < 300) y = resolution.getScaledHeight() - ConfigHandler.flightBarBreathHeight; int left = ItemNBTHelper.getInt(stack, TAG_TIME_LEFT, MAX_FLY_TIME); int segTime = MAX_FLY_TIME / 10; int segs = left / segTime + 1; int last = left % segTime; for (int i = 0; i < segs; i++) { float trans = 1F; if (i == segs - 1) { trans = (float) last / (float) segTime; GlStateManager.enableBlend(); GlStateManager.blendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA); GlStateManager.disableAlpha(); } GlStateManager.color(1F, 1F, 1F, trans); RenderHelper.drawTexturedModalRect(x, y, 0, u, v, 9, 9); x += 8; } if (player.capabilities.isFlying) { int width = ItemNBTHelper.getInt(stack, TAG_DASH_COOLDOWN, 0); GlStateManager.color(1F, 1F, 1F, 1F); if (width > 0) Gui.drawRect(xo, y - 2, xo + 80, y - 1, 0x88000000); Gui.drawRect(xo, y - 2, xo + width, y - 1, 0xFFFFFFFF); } GlStateManager.enableAlpha(); GlStateManager.color(1F, 1F, 1F, 1F); mc.renderEngine.bindTexture(Gui.ICONS); } @Override public Achievement getAchievementOnCraft(ItemStack stack, EntityPlayer player, IInventory matrix) { return stack.getItemDamage() == 1 ? ModAchievements.tiaraWings : null; } @SideOnly(Side.CLIENT) @Override public void registerModels() { ModelHandler.registerItemAllMeta(this, WING_TYPES); } }