LoadingBar.java
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package com.mumfrey.liteloader.client.gui.startup;
import static com.mumfrey.liteloader.gl.GL.*;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import javax.imageio.ImageIO;
import net.minecraft.client.Minecraft;
import net.minecraft.client.gui.FontRenderer;
import net.minecraft.client.gui.ScaledResolution;
import net.minecraft.client.renderer.Tessellator;
import net.minecraft.client.renderer.VertexBuffer;
import net.minecraft.client.renderer.texture.DynamicTexture;
import net.minecraft.client.renderer.texture.ITextureObject;
import net.minecraft.client.renderer.texture.TextureManager;
import net.minecraft.client.resources.IResource;
import net.minecraft.client.resources.IResourceManager;
import net.minecraft.client.shader.Framebuffer;
import net.minecraft.util.ResourceLocation;
import org.lwjgl.opengl.Display;
import com.mumfrey.liteloader.common.LoadingProgress;
import com.mumfrey.liteloader.util.log.LiteLoaderLogger;
/**
* Crappy implementation of a "Mojang Screen" loading bar
*
* @author Adam Mummery-Smith
*/
public class LoadingBar extends LoadingProgress
{
private static LoadingBar instance;
private static final String LOADING_MESSAGE_1 = "Starting Game...";
private static final String LOADING_MESSAGE_2 = "Initialising...";
private int minecraftProgress = 0;
private int totalMinecraftProgress = 606;
private int liteLoaderProgressScale = 3;
private int liteLoaderProgress = 0;
private int totalLiteLoaderProgress = 0;
private ResourceLocation textureLocation = new ResourceLocation("textures/gui/title/mojang.png");
private String minecraftMessage = LoadingBar.LOADING_MESSAGE_1;
private String message = "";
private Minecraft minecraft;
private TextureManager textureManager;
private FontRenderer fontRenderer;
private Framebuffer fbo;
private boolean enabled = true;
private boolean errored;
private boolean calculatedColour = false;
private int barLuma = 0, r2 = 246, g2 = 136, b2 = 62;
private int logIndex = 0;
private List<String> logTail = new ArrayList<String>();
public LoadingBar()
{
LoadingBar.instance = this;
}
@Override
protected void _setEnabled(boolean enabled)
{
this.enabled = enabled;
}
@Override
protected void _dispose()
{
this.minecraft = null;
this.textureManager = null;
this.fontRenderer = null;
this.disposeFbo();
}
private void disposeFbo()
{
if (this.fbo != null)
{
this.fbo.deleteFramebuffer();
this.fbo = null;
}
}
public static void incrementProgress()
{
if (LoadingBar.instance != null) LoadingBar.instance._incrementProgress();
}
protected void _incrementProgress()
{
this.message = this.minecraftMessage;
this.minecraftProgress++;
this.render();
}
public static void initTextures()
{
if (LoadingBar.instance != null) LoadingBar.instance._initTextures();
}
protected void _initTextures()
{
this.minecraftMessage = LoadingBar.LOADING_MESSAGE_2;
}
@Override
protected void _incLiteLoaderProgress()
{
this.liteLoaderProgress += this.liteLoaderProgressScale;
this.render();
}
@Override
protected void _setMessage(String message)
{
this.message = message;
this.render();
}
@Override
protected void _incLiteLoaderProgress(String message)
{
this.message = message;
this.liteLoaderProgress += this.liteLoaderProgressScale ;
this.render();
}
@Override
protected void _incTotalLiteLoaderProgress(int by)
{
this.totalLiteLoaderProgress += (by * this.liteLoaderProgressScale);
this.render();
}
/**
*
*/
private void render()
{
if (!this.enabled || this.errored) return;
try
{
if (this.minecraft == null) this.minecraft = Minecraft.getMinecraft();
if (this.textureManager == null) this.textureManager = this.minecraft.getTextureManager();
if (Display.isCreated() && this.textureManager != null)
{
if (this.fontRenderer == null)
{
this.fontRenderer = new FontRenderer(this.minecraft.gameSettings, new ResourceLocation("textures/font/ascii.png"),
this.textureManager, false);
this.fontRenderer.onResourceManagerReload(this.minecraft.getResourceManager());
}
double totalProgress = this.totalMinecraftProgress + this.totalLiteLoaderProgress;
double progress = (this.minecraftProgress + this.liteLoaderProgress) / totalProgress;
// if (progress >= 1.0) LoadingBar.message = "Preparing...";
this.render(progress);
}
}
catch (Exception ex)
{
// Disable the loading bar if ANY errors occur
this.errored = true;
}
}
/**
* @param progress
*/
private void render(double progress)
{
if (this.totalMinecraftProgress == -1)
{
this.totalMinecraftProgress = 606 - this.minecraftProgress;
this.minecraftProgress = 0;
}
// Calculate the bar colour if we haven't already done that
if (!this.calculatedColour)
{
this.calculatedColour = true;
ITextureObject texture = this.textureManager.getTexture(this.textureLocation);
if (texture == null)
{
try
{
DynamicTexture textureData = this.loadTexture(this.minecraft.getResourceManager(), this.textureLocation);
this.textureLocation = this.minecraft.getTextureManager().getDynamicTextureLocation("loadingScreen", textureData);
this.findMostCommonColour(textureData.getTextureData());
textureData.updateDynamicTexture();
}
catch (IOException ex)
{
ex.printStackTrace();
}
}
}
ScaledResolution scaledResolution = new ScaledResolution(this.minecraft);
int scaleFactor = scaledResolution.getScaleFactor();
int scaledWidth = scaledResolution.getScaledWidth();
int scaledHeight = scaledResolution.getScaledHeight();
int fboWidth = scaledWidth * scaleFactor;
int fboHeight = scaledHeight * scaleFactor;
if (this.fbo == null)
{
this.fbo = new Framebuffer(fboWidth, fboHeight, true);
}
else if (this.fbo.framebufferWidth != fboWidth || this.fbo.framebufferHeight != fboHeight)
{
this.fbo.createBindFramebuffer(fboWidth, fboHeight);
}
this.fbo.bindFramebuffer(false);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0.0D, scaledWidth, scaledHeight, 0.0D, 1000.0D, 3000.0D);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glTranslatef(0.0F, 0.0F, -2000.0F);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glDisableLighting();
glDisableFog();
glDisableDepthTest();
glEnableTexture2D();
this.textureManager.bindTexture(this.textureLocation);
Tessellator tessellator = Tessellator.getInstance();
VertexBuffer vertexBuffer = tessellator.getBuffer();
vertexBuffer.begin(GL_QUADS, VF_POSITION);
glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
vertexBuffer.pos(0.0D, scaledHeight, 0.0D).endVertex();
vertexBuffer.pos(scaledWidth, scaledHeight, 0.0D).endVertex();
vertexBuffer.pos(scaledWidth, 0.0D, 0.0D).endVertex();
vertexBuffer.pos(0.0D, 0.0D, 0.0D).endVertex();
tessellator.draw();
glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
int left = (scaledWidth - 256) / 2;
int top = (scaledHeight - 256) / 2;
int u1 = 0;
int v1 = 0;
int u2 = 256;
int v2 = 256;
float texMapScale = 0.00390625F;
vertexBuffer.begin(GL_QUADS, VF_POSITION_TEX);
vertexBuffer.pos(left + 0, top + v2, 0.0D).tex((u1 + 0) * texMapScale, (v1 + v2) * texMapScale).endVertex();
vertexBuffer.pos(left + u2, top + v2, 0.0D).tex((u1 + u2) * texMapScale, (v1 + v2) * texMapScale).endVertex();
vertexBuffer.pos(left + u2, top + 0, 0.0D).tex((u1 + u2) * texMapScale, (v1 + 0) * texMapScale).endVertex();
vertexBuffer.pos(left + 0, top + 0, 0.0D).tex((u1 + 0) * texMapScale, (v1 + 0) * texMapScale).endVertex();
tessellator.draw();
glEnableTexture2D();
glEnableColorLogic();
glLogicOp(GL_OR_REVERSE);
this.fontRenderer.drawString(this.message, 1, scaledHeight - 19, 0xFF000000);
if (LiteLoaderLogger.DEBUG)
{
int logBottom = this.minecraft.displayHeight - (20 * scaleFactor) - 2;
glPushMatrix();
glScalef(1.0F / scaleFactor, 1.0F / scaleFactor, 1.0F);
this.renderLogTail(logBottom);
glPopMatrix();
}
glDisableColorLogic();
glEnableTexture2D();
double barHeight = 10.0D;
double barWidth = scaledResolution.getScaledWidth_double() - 2.0D;
glDisableTexture2D();
glEnableBlend();
glEnableAlphaTest();
glAlphaFunc(GL_GREATER, 0.0F);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
// tessellator.startDrawingQuads();
// tessellator.setColorRGBA(0, 0, 0, 32);
// tessellator.addVertex(0.0D, scaledHeight, 0.0D);
// tessellator.setColorRGBA(0, 0, 0, 180);
// tessellator.addVertex(0.0D + scaledWidth, scaledHeight, 0.0D);
// tessellator.setColorRGBA(0, 0, 0, 0);
// tessellator.addVertex(0.0D + scaledWidth, (scaledHeight / 10), 0.0D);
// tessellator.addVertex(0.0D, scaledHeight - (scaledHeight / 3), 0.0D);
// tessellator.draw();
vertexBuffer.begin(GL_QUADS, VF_POSITION);
float luma = this.barLuma / 255.0F;
glColor4f(luma, luma, luma, 0.5F);
vertexBuffer.pos(0.0D, scaledHeight, 0.0D).endVertex();
vertexBuffer.pos(0.0D + scaledWidth, scaledHeight, 0.0D).endVertex();
vertexBuffer.pos(0.0D + scaledWidth, scaledHeight - barHeight, 0.0D).endVertex();
vertexBuffer.pos(0.0D, scaledHeight - barHeight, 0.0D).endVertex();
tessellator.draw();
barHeight -= 1;
vertexBuffer.begin(GL_QUADS, VF_POSITION_COLOR);
float r2 = this.r2 / 255.0F;
float g2 = this.g2 / 255.0F;
float b2 = this.b2 / 255.0F;
vertexBuffer.pos(1.0D + barWidth * progress, scaledHeight - 1, 1.0D).color(r2, g2, b2, 1.0F).endVertex();
vertexBuffer.pos(1.0D + barWidth * progress, scaledHeight - barHeight, 1.0D).color(r2, g2, b2, 1.0F).endVertex();
vertexBuffer.pos(1.0D, scaledHeight - barHeight, 1.0D).color(0.0F, 0.0F, 0.0F, 1.0F).endVertex();
vertexBuffer.pos(1.0D, scaledHeight - 1, 1.0D).color(0.0F, 0.0F, 0.0F, 1.0F).endVertex();
tessellator.draw();
glAlphaFunc(GL_GREATER, 0.1F);
glDisableLighting();
glDisableFog();
this.fbo.unbindFramebuffer();
this.fbo.framebufferRender(fboWidth, fboHeight);
glEnableAlphaTest();
glAlphaFunc(GL_GREATER, 0.1F);
// glFlush();
this.minecraft.updateDisplay();
}
private void renderLogTail(int yPos)
{
if (this.logIndex != LiteLoaderLogger.getLogIndex())
{
this.logTail = LiteLoaderLogger.getLogTail();
}
for (int logIndex = this.logTail.size() - 1; yPos > 10 && logIndex >= 0; logIndex--)
{
this.fontRenderer.drawString(this.logTail.get(logIndex), 10, yPos -= 10, 0xFF000000);
}
}
/**
* Find the most common (approx) colour in the image and assign it to the
* bar, reduces the palette to 9-bit by stripping the the 5 LSB from each
* byte to create a 9-bit palette index in the form RRRGGGBBB
*
* @param textureData
*/
private void findMostCommonColour(int[] textureData)
{
// Array of frequency values, indexed by palette index
int[] freq = new int[512];
for (int pos = 0; pos < textureData.length; pos++)
{
int paletteIndex = ((textureData[pos] >> 21 & 0x7) << 6) + ((textureData[pos] >> 13 & 0x7) << 3) + (textureData[pos] >> 5 & 0x7);
freq[paletteIndex]++;
}
int peak = 0;
// Black, white and 0x200000 excluded on purpose
for (int paletteIndex = 2; paletteIndex < 511; paletteIndex++)
{
if (freq[paletteIndex] > peak)
{
peak = freq[paletteIndex];
this.setBarColour(paletteIndex);
}
}
}
/**
* @param paletteIndex
*/
private void setBarColour(int paletteIndex)
{
this.r2 = this.padComponent((paletteIndex & 0x1C0) >> 1);
this.g2 = this.padComponent((paletteIndex & 0x38) << 2);
this.b2 = this.padComponent((paletteIndex & 0x7) << 5);
this.barLuma = (Math.max(this.r2, Math.max(this.g2, this.b2)) < 64) ? 255 : 0;
}
/**
* Pad LSB with 1's if any MSB are 1 (effectively a bitwise ceil() function)
*
* @param component
*/
private int padComponent(int component)
{
return (component > 0x1F) ? component | 0x1F : component;
}
private DynamicTexture loadTexture(IResourceManager resourceManager, ResourceLocation textureLocation) throws IOException
{
InputStream inputStream = null;
try
{
IResource resource = resourceManager.getResource(textureLocation);
inputStream = resource.getInputStream();
BufferedImage image = ImageIO.read(inputStream);
return new DynamicTexture(image);
}
finally
{
if (inputStream != null)
{
inputStream.close();
}
}
}
}