Java tutorial
/** Copyright (C) <2015> <coolAlias> This file is part of coolAlias' Zelda Sword Skills Minecraft Mod; as such, you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ package zeldaswordskills.client.gui; import java.util.ArrayList; import java.util.List; import net.minecraft.client.Minecraft; import net.minecraft.client.gui.GuiScreen; import net.minecraft.util.ResourceLocation; import net.minecraft.util.Vec3; import org.lwjgl.input.Keyboard; import org.lwjgl.opengl.GL11; import zeldaswordskills.client.RenderHelperQ; import zeldaswordskills.client.ZSSKeyHandler; import zeldaswordskills.ref.Config; import zeldaswordskills.ref.ModInfo; import zeldaswordskills.songs.AbstractZeldaSong; import zeldaswordskills.util.SongNote; import zeldaswordskills.util.SongNote.PlayableNote; import cpw.mods.fml.relauncher.Side; import cpw.mods.fml.relauncher.SideOnly; /** * * Basic Zelda music GUI shows notes on the screen as played, leaving it up to * child implementations to determine the song played and effects it should have * */ @SideOnly(Side.CLIENT) public abstract class GuiMusicBase extends GuiScreen { protected final Minecraft mc; /** Maximum number of notes that can display on the GUI at any given time */ protected static final int MAX_NOTES = 8; /** Note texture height and width */ protected static final int NOTE_SIZE = 12; /** Y interval between lines */ protected static final int INT_Y = 5; /** The X size of the window in pixels */ protected int xSize = 213; /** The Y size of the window in pixels */ protected int ySize = 90; /** Full width of texture file, in pixels */ protected int fullX = 256; /** Full height of texture file, in pixels */ protected int fullY = 128; /** Starting X position for the Gui */ protected int guiLeft; /** Starting Y position for the Gui */ protected int guiTop; /** Currently playing song, if any */ protected AbstractZeldaSong song; /** Stores the notes played so far */ protected final List<SongNote> melody = new ArrayList<SongNote>(); /** Number of ticks since last note played; after a certain threshold, current melody clears */ protected int ticksSinceLastNote; /** Location of the player when the gui is opened, makes it easier to handle packets and such */ protected final int x, y, z; public GuiMusicBase(int x, int y, int z) { mc = Minecraft.getMinecraft(); this.x = x; this.y = y; this.z = z; } @Override public void initGui() { super.initGui(); guiLeft = (width - xSize) / 2; guiTop = (height - ySize) / 2 + 25; } @Override public boolean doesGuiPauseGame() { return false; } protected abstract ResourceLocation getTexture(); @Override public void drawScreen(int mouseX, int mouseY, float f) { GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F); mc.getTextureManager().bindTexture(getTexture()); GL11.glPushAttrib(GL11.GL_ALL_ATTRIB_BITS); GL11.glDisable(GL11.GL_LIGHTING); GL11.glEnable(GL11.GL_ALPHA_TEST); GL11.glEnable(GL11.GL_BLEND); RenderHelperQ.drawTexturedRect(guiLeft, guiTop, 0, 0, xSize, ySize, fullX, fullY); GL11.glPopAttrib(); int i1 = (melody.size() > MAX_NOTES ? ((melody.size() - 1) / MAX_NOTES) * MAX_NOTES : 0); for (int i = 0; (i + i1) < melody.size(); ++i) { SongNote note = melody.get(i + i1); // j is factor of how far down the screen note should be drawn int j = SongNote.Note.values().length - (note.note.ordinal() + 1) + (SongNote.Note.values().length * (2 - note.getOctave())); int dy = 6 + (INT_Y * j); int dx = 46 + (NOTE_SIZE + 8) * i; // draw supplementary line(s) under staff and behind note if (j > 10) { // j goes from 0-13, not 1-14 int dy2 = (10 + INT_Y * 11); // given the control scheme, this loop is not really necessary as it's not possible to reach the low A note for (int n = 0; n < ((j - 9) / 2); ++n) { // each line segment is 16x5 pixels, using first line in .png file at 8,15 RenderHelperQ.drawTexturedRect(guiLeft + (dx - 2), guiTop + dy2 + (n * 2 * INT_Y), 8, 15, 16, 5, fullX, fullY); } } RenderHelperQ.drawTexturedRect(guiLeft + dx, guiTop + dy, xSize, PlayableNote.getOrdinalFromNote(note) * NOTE_SIZE, NOTE_SIZE, NOTE_SIZE, fullX, fullY); // draw additional sharp / flat if applicable if (note.isSharp() || note.isFlat()) { RenderHelperQ.drawTexturedRect(guiLeft + dx + NOTE_SIZE - 2, guiTop + dy, xSize + NOTE_SIZE, (note.isSharp() ? 0 : 5), 5, 5, fullX, fullY); } } if (song != null) { String s = song.getDisplayName(); fontRendererObj.drawString(s, guiLeft + (xSize / 2) - (fontRendererObj.getStringWidth(s) / 2), guiTop + 3, 0xFFFFFF); } super.drawScreen(mouseX, mouseY, f); } @Override public void updateScreen() { ++ticksSinceLastNote; if (song != null) { if (ticksSinceLastNote > song.getMinDuration()) { mc.thePlayer.closeScreen(); } } else if (ticksSinceLastNote > Config.getNoteResetInterval()) { ticksSinceLastNote = 0; melody.clear(); } } /** * Returning false prevents further key inputs from affecting the notes played, * though Esc will still close the GUI; default allows input as long as song is null */ protected boolean allowKeyInput() { return song == null; } @Override protected void keyTyped(char c, int key) { if (!allowKeyInput()) { super.keyTyped(c, key); return; } PlayableNote playedNote = null; // Change to use your own KeyBindings, of course if (key == ZSSKeyHandler.keys[ZSSKeyHandler.KEY_ATTACK].getKeyCode()) { playedNote = PlayableNote.D2; // high D } else if (key == ZSSKeyHandler.keys[ZSSKeyHandler.KEY_DOWN].getKeyCode()) { playedNote = PlayableNote.F1; // low F } else if (key == ZSSKeyHandler.keys[ZSSKeyHandler.KEY_LEFT].getKeyCode()) { playedNote = PlayableNote.B2; // high B } else if (key == ZSSKeyHandler.keys[ZSSKeyHandler.KEY_RIGHT].getKeyCode()) { playedNote = PlayableNote.A2; // high A } else if (key == mc.gameSettings.keyBindJump.getKeyCode()) { playedNote = PlayableNote.D1; // low D } // No note key was pressed, call super and get out if (playedNote == null) { super.keyTyped(c, key); } else { int modifier = 0; // Half-step modifier keys if (Keyboard.isKeyDown(mc.gameSettings.keyBindRight.getKeyCode())) { ++modifier; } else if (Keyboard.isKeyDown(mc.gameSettings.keyBindLeft.getKeyCode())) { --modifier; } // Whole step modifier keys are in addition to half-step modifiers if (Keyboard.isKeyDown(mc.gameSettings.keyBindForward.getKeyCode())) { modifier += 2; } else if (Keyboard.isKeyDown(mc.gameSettings.keyBindBack.getKeyCode())) { modifier -= 2; } SongNote note = SongNote.getNote(playedNote, modifier); if (note != null) { onNotePlayed(note); onNoteAdded(); } } } /** * Called after each note is added; check if notes match a song here */ protected abstract void onNoteAdded(); /** * Adds the note to the list of notes played, plays the note sound, and spawns particles. */ protected void onNotePlayed(SongNote note) { melody.add(note); ticksSinceLastNote = 0; float f = (float) Math.pow(2.0D, (double) (note.ordinal() - 12) / 12.0D); // TODO retrieve note to play from player's held ItemInstrument when gui constructed mc.thePlayer.playSound(ModInfo.ID + ":note.ocarina", 3.0F, f); Vec3 look = mc.thePlayer.getLookVec(); mc.theWorld.spawnParticle("note", mc.thePlayer.posX + look.xCoord + mc.theWorld.rand.nextDouble() - 0.5D, mc.thePlayer.posY + look.yCoord + mc.thePlayer.getEyeHeight() + mc.theWorld.rand.nextDouble() - 0.5D, mc.thePlayer.posZ + look.zCoord + mc.theWorld.rand.nextDouble() - 0.5D, (double) note.ordinal() / 24.0D, 0.0D, 0.0D); } }