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Add initial camdat decoders
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ficedula
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efc8eb0ac3
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245
Ficedula.FF7/Battle/Camera.cs
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245
Ficedula.FF7/Battle/Camera.cs
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// This program and the accompanying materials are made available under the terms of the
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// Eclipse Public License v2.0 which accompanies this distribution, and is available at
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// https://www.eclipse.org/legal/epl-v20.html
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//
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// SPDX-License-Identifier: EPL-2.0
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using System;
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using System.Collections.Generic;
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using System.Drawing;
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using System.Linq;
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using System.Text;
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using System.Threading;
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using System.Threading.Tasks;
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namespace Ficedula.FF7.Battle {
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public class CameraData : IDisposable {
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private Stream _source;
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private List<int[]> _offsets;
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public int CameraCount { get; private set; }
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public CameraData(Stream source) {
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_source = source;
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var offsets = Enumerable.Range(0, 4)
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.Select(_ => (int)(source.ReadU32() - 0x801A0000))
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.ToArray();
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CameraCount = (offsets[1] - offsets[0]) / 12; //4 byte pointer, 3 cameras per entry
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_offsets = Enumerable.Range(0, 4)
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.Select(i => {
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int count = i < 2 ? CameraCount : 1;
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source.Position = offsets[i];
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int[] pointers = Enumerable.Range(0, count)
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.Select(_ => (int)(source.ReadU32() - 0x801A0000))
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.ToArray();
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return pointers;
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})
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.ToList();
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}
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private byte[] Read(int camera, int index, bool focus, bool victoryCamera) {
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int[] offsets = _offsets[(focus ? 1 : 0) + (victoryCamera ? 2 : 0)];
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int offset = offsets[camera * 3 + index],
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next = offsets[camera * 3 + index + 1];
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byte[] data = new byte[next - offset];
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_source.Position = offset;
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_source.Read(data, 0, data.Length);
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return data;
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}
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public CameraPositionScript ReadPosition(int camera, int index, bool isVictory) {
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return new CameraPositionScript(Read(camera, index, false, isVictory));
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}
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public CameraFocusScript ReadFocus(int camera, int index, bool isVictory) {
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return new CameraFocusScript(Read(camera, index, true, isVictory));
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}
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public void Dispose() {
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_source.Dispose();
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}
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}
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public abstract class CameraScript<T> where T : struct {
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protected static Dictionary<T, int[]> _opParams;
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protected static T _conditionalRestartOp;
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private byte[] _bytecode;
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private int _ip;
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protected CameraScript(byte[] bytecode) {
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_bytecode = bytecode;
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}
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protected abstract T FromByte(byte b);
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public DecodedCameraOp<T> NextOp() {
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var op = new DecodedCameraOp<T> {
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Opcode = FromByte(_bytecode[_ip++]),
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};
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if (_opParams.TryGetValue(op.Opcode, out int[] parms)) {
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op.Operands = parms
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.Select(i => {
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switch (i) {
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case 1:
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return (int)_bytecode[_ip++];
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case 2:
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short s = BitConverter.ToInt16(_bytecode, _ip);
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_ip += 2;
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return s;
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default:
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throw new NotImplementedException();
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}
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})
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.ToArray();
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}
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return op;
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}
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}
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public class CameraPositionScript : CameraScript<CameraPositionOpcode> {
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static CameraPositionScript() {
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_opParams = new() {
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[CameraPositionOpcode.UnknownD5] = new[] { 2 },
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[CameraPositionOpcode.UnknownD7] = new[] { 1, 1 },
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[CameraPositionOpcode.UnknownD8] = new[] { 1, 1, 2, 2, 2, 1 },
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[CameraPositionOpcode.SetActiveIdleCamera] = new[] { 1 },
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[CameraPositionOpcode.UnknownDE] = new[] { 1 },
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[CameraPositionOpcode.UnknownE0] = new[] { 1, 1 },
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[CameraPositionOpcode.UnknownE2] = new[] { 1 },
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[CameraPositionOpcode.UnknownE3] = new[] { 1, 1, 2, 2, 2, 1 },
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[CameraPositionOpcode.TransitionToAttackerJoint] = new[] { 1, 2, 2, 2, 1 },
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[CameraPositionOpcode.TransitionToTargetJoint] = new[] { 1, 2, 2, 2, 1 },
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[CameraPositionOpcode.UnknownE6] = new[] { 2, 2, 2, 1 },
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[CameraPositionOpcode.UnknownE7] = new[] { 1, 2, 2, 2, 1 },
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[CameraPositionOpcode.UnknownE9] = new[] { 1, 2, 2, 2, 1 },
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[CameraPositionOpcode.UnknownEB] = new[] { 1, 1, 2, 2, 2, 1 },
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[CameraPositionOpcode.UnknownEF] = new[] { 1, 1, 2, 2, 2 },
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[CameraPositionOpcode.UnknownF0] = new[] { 1, 2, 2, 2 },
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[CameraPositionOpcode.UnknownF2] = new[] { 1, 2, 2 },
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[CameraPositionOpcode.UnknownF3] = new[] { 1, 2, 2 },
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[CameraPositionOpcode.SetWait] = new[] { 1 },
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[CameraPositionOpcode.UnknownF7] = new[] { 1, 2, 2, 2 },
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[CameraPositionOpcode.UnknownF8] = new[] { 2, 2, 2, 2, 2, 2 },
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[CameraPositionOpcode.UnknownF9] = new[] { 2, 2, 2 },
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//ConditionalRestart is special
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};
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_conditionalRestartOp = CameraPositionOpcode.ConditionalRestart;
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}
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public CameraPositionScript(byte[] bytecode) : base(bytecode) {
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}
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protected override CameraPositionOpcode FromByte(byte b) {
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return (CameraPositionOpcode)b;
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}
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}
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public class CameraFocusScript : CameraScript<CameraFocusOpcode> {
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static CameraFocusScript() {
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_opParams = new() {
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[CameraFocusOpcode.UnknownD8] = new[] { 1, 1, 2, 2, 2, 1 },
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[CameraFocusOpcode.SetActiveIdleCamera] = new[] { 1 },
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[CameraFocusOpcode.UnknownDE] = new[] { 1 },
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[CameraFocusOpcode.UnknownE0] = new[] { 1, 1 },
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[CameraFocusOpcode.TransitionToIdle] = new[] { 1 },
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[CameraFocusOpcode.UnknownE3] = new[] { 1, 1, 2, 2, 2, 1 },
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[CameraFocusOpcode.TransitionToAttackerJoint] = new[] { 1, 1, 2, 2, 2, 1 },
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[CameraFocusOpcode.TransitionToTargetJoint] = new[] { 1, 2, 2, 2, 1 },
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[CameraFocusOpcode.UnknownE6] = new[] { 2, 2, 2, 1 },
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[CameraFocusOpcode.TransitionToAttackerView] = new[] { 1, 2, 2, 2, 1 },
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[CameraFocusOpcode.UnknownEA] = new[] { 1, 2, 2, 2, 1 },
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[CameraFocusOpcode.UnknownEC] = new[] { 1, 1, 2, 2, 2, 1 },
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[CameraFocusOpcode.UnknownF0] = new[] { 1, 1, 2, 2, 2 },
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[CameraFocusOpcode.SetWait] = new[] { 1 },
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[CameraFocusOpcode.UnknownF8] = new[] { 1, 2, 2, 2 },
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[CameraFocusOpcode.UnknownF9] = new[] { 1, 2, 2, 2 },
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[CameraFocusOpcode.LoadPoint] = new[] { 2, 2, 2 },
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//ConditionalRestart is special
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};
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_conditionalRestartOp = CameraFocusOpcode.ConditionalRestart;
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}
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public CameraFocusScript(byte[] bytecode) : base(bytecode) {
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}
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protected override CameraFocusOpcode FromByte(byte b) {
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return (CameraFocusOpcode)b;
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}
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}
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public struct DecodedCameraOp<T> where T : struct {
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public T Opcode { get; set; }
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public int[] Operands { get; set; }
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}
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public enum CameraPositionOpcode {
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UnknownD5 = 0xD5,
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UnknownD6 = 0xD6,
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UnknownD7 = 0xD7,
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UnknownD8 = 0xD8,
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UnknownD9 = 0xD9,
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UnknownDA = 0xDA,
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UnknownDB = 0xDB,
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UnknownDC = 0xDC,
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SetActiveIdleCamera = 0xDD,
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UnknownDE = 0xDE,
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UnknownDF = 0xDF,
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UnknownE0 = 0xE0,
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LoadIdleCameraPos = 0xE1,
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UnknownE2 = 0xE2,
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UnknownE3 = 0xE3,
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TransitionToAttackerJoint = 0xE4,
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TransitionToTargetJoint = 0xE5,
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UnknownE6 = 0xE6,
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UnknownE7 = 0xE7,
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UnknownE9 = 0xE9,
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UnknownEB = 0xEB,
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UnknownEF = 0xEF,
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UnknownF0 = 0xF0,
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UnknownF1 = 0xF1,
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UnknownF2 = 0xF2,
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UnknownF3 = 0xF3,
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Wait = 0xF4,
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SetWait = 0xF5,
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UnknownF7 = 0xF7,
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UnknownF8 = 0xF8,
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UnknownF9 = 0xF9,
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ConditionalRestart = 0xFE,
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ScriptEnd = 0xFF,
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}
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public enum CameraFocusOpcode {
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UnknownD8 = 0xD8,
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UnknownD9 = 0xD9,
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UnknownDB = 0xDB,
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UnknownDC = 0xDC,
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SetActiveIdleCamera = 0xDD,
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UnknownDE = 0xDE,
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UnknownDF = 0xDF,
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UnknownE0 = 0xE0,
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LoadIdleCameraPos = 0xE1,
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TransitionToIdle = 0xE2,
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UnknownE3 = 0xE3,
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TransitionToAttackerJoint = 0xE4,
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TransitionToTargetJoint = 0xE5,
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UnknownE6 = 0xE6,
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TransitionToAttackerView = 0xE8,
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UnknownEA = 0xEA,
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UnknownEC = 0xEC,
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UnknownF0 = 0xF0,
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Wait = 0xF4,
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SetWait = 0xF5,
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UnknownF8 = 0xF8,
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UnknownF9 = 0xF9,
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LoadPoint = 0xFA,
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ConditionalRestart = 0xFE,
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ScriptEnd = 0xFF,
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}
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}
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