/// <summary>
/// Loads animation data/frames for the specified level.
/// </summary>
/// <param name="level">The level to load data for</param>
/// <param name="lastFrame">The index of the first frame after the current area's frame data, or FF to leave unspecified. If an FF terminator is encountered in frame data, parsing will stop sooner.</param>
/// <returns></returns>
private static ChrAnimationLevelData LoadAnimationsForLevel(MetroidRom rom, LevelIndex level, int lastFrame)
{
ChrAnimationLevelData data = new ChrAnimationLevelData(level);
// CHR usage table has been repurposed in MMC3 ROMs (hence accessor names don't match usage)
data.SprBank0 = rom.ChrUsage.GetSprPage(level);
data.SprBank1 = rom.ChrUsage.GetBgLastPage(level);
// First frame index
int frameIndex = rom.ChrUsage.GetBgFirstPage(level);
bool keepGoing = true;
while (keepGoing && frameIndex < lastFrame && frameIndex < 0xFF)
{
ChrAnimationTable loadedAnimation = LoadOneAnimation(rom, level, ref frameIndex);
if (loadedAnimation == null)
{
if (data.Animations.Count == 0)
{
loadedAnimation = new ChrAnimationTable();
ChrAnimationFrame frame = new ChrAnimationFrame();
frame.FrameTime = 1;
loadedAnimation.Frames.Add(frame);
}
else
{
return(data);
}
}
data.Animations.Add(loadedAnimation);
}
return(data);
}
/// <summary>
/// Writes frame data to the chr animation table for the specified animations. The CHR usage table is not updated by this method.
/// </summary>
/// <param name="rom"></param>
/// <param name="animationData"></param>
/// <param name="frameIndex"></param>
internal static void SerializeChrAnimation(MetroidRom rom, ChrAnimationLevelData animationData, ref int frameIndex)
{
for (int iAnimation = 0; iAnimation < animationData.Animations.Count; iAnimation++)
{
var animation = animationData.Animations[iAnimation];
animation.SerializedFrameIndex = frameIndex;
for (int iFrame = 0; iFrame < animation.Frames.Count; iFrame++)
{
var frame = animation.Frames[iFrame];
rom.SetAnimationTable_Bank0(frameIndex, frame.Bank0);
rom.SetAnimationTable_Bank1(frameIndex, frame.Bank1);
rom.SetAnimationTable_Bank2(frameIndex, frame.Bank2);
rom.SetAnimationTable_Bank3(frameIndex, frame.Bank3);
rom.SetAnimationTable_FrameTime(frameIndex, frame.FrameTime);
rom.SetAnimationTable_FrameLast(frameIndex, iFrame == animation.Frames.Count - 1);
frameIndex++;
}
}
}
