AnimationDefinitionDecoder.java

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package com.runehive.fs.cache.decoder;
 
import com.runehive.fs.cache.FileSystem;
import com.runehive.fs.cache.archive.Archive;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
 
/**
 * A class which parses animation definitions.
 */
public final class AnimationDefinitionDecoder implements Runnable {
 
    /** The logger to log process output. */
    private final static Logger LOGGER = LogManager.getLogger(AnimationDefinitionDecoder.class);
 
    public static final Int2ObjectMap<AnimationDefinition> definitions = new Int2ObjectOpenHashMap<>();
 
    /** The IndexedFileSystem. */
    private final FileSystem fs;
 
    public AnimationDefinitionDecoder(final FileSystem fs) {
        this.fs = fs;
    }
 
    @Override
    public void run() {
        LOGGER.info("Loading animation definitions.");
 
        final Archive archive = fs.getArchive(FileSystem.CONFIG_ARCHIVE);
        final ByteBuf buffer = Unpooled.wrappedBuffer(archive.getData("seq.dat"));
        try {
            final int highestFileId = buffer.readUnsignedShort();
            for (int i = 0; i <= highestFileId; i++) {
                final int id = buffer.readUnsignedShort();
                if (id == 65535) break;
 
                final int length = buffer.readUnsignedShort();
                final ByteBuf animBuffer = buffer.readBytes(length);
                try {
                    final AnimationDefinition definition = new AnimationDefinition(id);
                    definition.decode(animBuffer);
 
                    definitions.put(id, definition);
                } finally {
                    animBuffer.release();
                }
 
                if (id >= highestFileId) break;
            }
        } finally {
            buffer.release();
        }
 
        LOGGER.info("Loaded " + definitions.size() + " animation definitions.");
    }
 
}