msg.java

JAKE2用ＪＡＶＡ写的queck2的３Ｄ游戏开发引擎

        if (to.sound != from.sound)
            bits |= U_SOUND;

        if (newentity || (to.renderfx & RF_BEAM) != 0)
            bits |= U_OLDORIGIN;

        //
        // write the message
        //
        if (bits == 0 && !force)
            return; // nothing to send!

        //----------

        if ((bits & 0xff000000) != 0)
            bits |= U_MOREBITS3 | U_MOREBITS2 | U_MOREBITS1;
        else if ((bits & 0x00ff0000) != 0)
            bits |= U_MOREBITS2 | U_MOREBITS1;
        else if ((bits & 0x0000ff00) != 0)
            bits |= U_MOREBITS1;

        WriteByte(msg, bits & 255);

        if ((bits & 0xff000000) != 0) {
            WriteByte(msg, (bits >>> 8) & 255);
            WriteByte(msg, (bits >>> 16) & 255);
            WriteByte(msg, (bits >>> 24) & 255);
        } else if ((bits & 0x00ff0000) != 0) {
            WriteByte(msg, (bits >>> 8) & 255);
            WriteByte(msg, (bits >>> 16) & 255);
        } else if ((bits & 0x0000ff00) != 0) {
            WriteByte(msg, (bits >>> 8) & 255);
        }

        //----------

        if ((bits & U_NUMBER16) != 0)
            WriteShort(msg, to.number);
        else
            WriteByte(msg, to.number);

        if ((bits & U_MODEL) != 0)
            WriteByte(msg, to.modelindex);
        if ((bits & U_MODEL2) != 0)
            WriteByte(msg, to.modelindex2);
        if ((bits & U_MODEL3) != 0)
            WriteByte(msg, to.modelindex3);
        if ((bits & U_MODEL4) != 0)
            WriteByte(msg, to.modelindex4);

        if ((bits & U_FRAME8) != 0)
            WriteByte(msg, to.frame);
        if ((bits & U_FRAME16) != 0)
            WriteShort(msg, to.frame);

        if ((bits & U_SKIN8) != 0 && (bits & U_SKIN16) != 0) //used for laser
                                                             // colors
            WriteInt(msg, to.skinnum);
        else if ((bits & U_SKIN8) != 0)
            WriteByte(msg, to.skinnum);
        else if ((bits & U_SKIN16) != 0)
            WriteShort(msg, to.skinnum);

        if ((bits & (U_EFFECTS8 | U_EFFECTS16)) == (U_EFFECTS8 | U_EFFECTS16))
            WriteInt(msg, to.effects);
        else if ((bits & U_EFFECTS8) != 0)
            WriteByte(msg, to.effects);
        else if ((bits & U_EFFECTS16) != 0)
            WriteShort(msg, to.effects);

        if ((bits & (U_RENDERFX8 | U_RENDERFX16)) == (U_RENDERFX8 | U_RENDERFX16))
            WriteInt(msg, to.renderfx);
        else if ((bits & U_RENDERFX8) != 0)
            WriteByte(msg, to.renderfx);
        else if ((bits & U_RENDERFX16) != 0)
            WriteShort(msg, to.renderfx);

        if ((bits & U_ORIGIN1) != 0)
            WriteCoord(msg, to.origin[0]);
        if ((bits & U_ORIGIN2) != 0)
            WriteCoord(msg, to.origin[1]);
        if ((bits & U_ORIGIN3) != 0)
            WriteCoord(msg, to.origin[2]);

        if ((bits & U_ANGLE1) != 0)
            WriteAngle(msg, to.angles[0]);
        if ((bits & U_ANGLE2) != 0)
            WriteAngle(msg, to.angles[1]);
        if ((bits & U_ANGLE3) != 0)
            WriteAngle(msg, to.angles[2]);

        if ((bits & U_OLDORIGIN) != 0) {
            WriteCoord(msg, to.old_origin[0]);
            WriteCoord(msg, to.old_origin[1]);
            WriteCoord(msg, to.old_origin[2]);
        }

        if ((bits & U_SOUND) != 0)
            WriteByte(msg, to.sound);
        if ((bits & U_EVENT) != 0)
            WriteByte(msg, to.event);
        if ((bits & U_SOLID) != 0)
            WriteShort(msg, to.solid);
    }

    //============================================================

    //
    // reading functions
    //

    public static void BeginReading(sizebuf_t msg) {
        msg.readcount = 0;
    }

    // returns -1 if no more characters are available, but also [-128 , 127]
    public static int ReadChar(sizebuf_t msg_read) {
        int c;

        if (msg_read.readcount + 1 > msg_read.cursize)
            c = -1;
        else
            c = msg_read.data[msg_read.readcount];
        msg_read.readcount++;
        // kickangles bugfix (rst)
        return c;
    }

    public static int ReadByte(sizebuf_t msg_read) {
        int c;

        if (msg_read.readcount + 1 > msg_read.cursize)
            c = -1;
        else
            c = msg_read.data[msg_read.readcount] & 0xff;
        
        msg_read.readcount++;

        return c;
    }

    public static short ReadShort(sizebuf_t msg_read) {
        int c;

        if (msg_read.readcount + 2 > msg_read.cursize)
            c = -1;
        else
            c = (short) ((msg_read.data[msg_read.readcount] & 0xff) + (msg_read.data[msg_read.readcount + 1] << 8));

        msg_read.readcount += 2;

        return (short) c;
    }

    public static int ReadLong(sizebuf_t msg_read) {
        int c;

        if (msg_read.readcount + 4 > msg_read.cursize) {
            Com.Printf("buffer underrun in ReadLong!");
            c = -1;
        }

        else
            c = (msg_read.data[msg_read.readcount] & 0xff)
                    | ((msg_read.data[msg_read.readcount + 1] & 0xff) << 8)
                    | ((msg_read.data[msg_read.readcount + 2] & 0xff) << 16)
                    | ((msg_read.data[msg_read.readcount + 3] & 0xff) << 24);

        msg_read.readcount += 4;

        return c;
    }

    public static float ReadFloat(sizebuf_t msg_read) {
        int n = ReadLong(msg_read);
        return Float.intBitsToFloat(n);
    }

    // 2k read buffer.
    public static byte readbuf[] = new byte[2048];

    public static String ReadString(sizebuf_t msg_read) {

        byte c;
        int l = 0;
        do {
            c = (byte) ReadByte(msg_read);
            if (c == -1 || c == 0)
                break;

            readbuf[l] = c;
            l++;
        } while (l < 2047);
        
        String ret = new String(readbuf, 0, l);
        // Com.dprintln("MSG.ReadString:[" + ret + "]");
        return ret;
    }

    public static String ReadStringLine(sizebuf_t msg_read) {

        int l;
        byte c;

        l = 0;
        do {
            c = (byte) ReadChar(msg_read);
            if (c == -1 || c == 0 || c == 0x0a)
                break;
            readbuf[l] = c;
            l++;
        } while (l < 2047);
        
        String ret = new String(readbuf, 0, l).trim();
        Com.dprintln("MSG.ReadStringLine:[" + ret.replace('\0', '@') + "]");
        return ret;
    }

    public static float ReadCoord(sizebuf_t msg_read) {
        return ReadShort(msg_read) * (1.0f / 8);
    }

    public static void ReadPos(sizebuf_t msg_read, float pos[]) {
        assert (pos.length == 3) : "vec3_t bug";
        pos[0] = ReadShort(msg_read) * (1.0f / 8);
        pos[1] = ReadShort(msg_read) * (1.0f / 8);
        pos[2] = ReadShort(msg_read) * (1.0f / 8);
    }

    public static float ReadAngle(sizebuf_t msg_read) {
        return ReadChar(msg_read) * (360.0f / 256);
    }

    public static float ReadAngle16(sizebuf_t msg_read) {
        return Math3D.SHORT2ANGLE(ReadShort(msg_read));
    }

    public static void ReadDeltaUsercmd(sizebuf_t msg_read, usercmd_t from,
            usercmd_t move) {
        int bits;

        //memcpy(move, from, sizeof(* move));
        // IMPORTANT!! copy without new
        move.set(from);
        bits = ReadByte(msg_read);

        // read current angles
        if ((bits & CM_ANGLE1) != 0)
            move.angles[0] = ReadShort(msg_read);
        if ((bits & CM_ANGLE2) != 0)
            move.angles[1] = ReadShort(msg_read);
        if ((bits & CM_ANGLE3) != 0)
            move.angles[2] = ReadShort(msg_read);

        // read movement
        if ((bits & CM_FORWARD) != 0)
            move.forwardmove = ReadShort(msg_read);
        if ((bits & CM_SIDE) != 0)
            move.sidemove = ReadShort(msg_read);
        if ((bits & CM_UP) != 0)
            move.upmove = ReadShort(msg_read);

        // read buttons
        if ((bits & CM_BUTTONS) != 0)
            move.buttons = (byte) ReadByte(msg_read);

        if ((bits & CM_IMPULSE) != 0)
            move.impulse = (byte) ReadByte(msg_read);

        // read time to run command
        move.msec = (byte) ReadByte(msg_read);

        // read the light level
        move.lightlevel = (byte) ReadByte(msg_read);

    }

    public static void ReadData(sizebuf_t msg_read, byte data[], int len) {
        for (int i = 0; i < len; i++)
            data[i] = (byte) ReadByte(msg_read);
    }    
            
}