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Automatically mirror long sprites for missing rotations

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This commit is contained in:
LJ Sonic 2024-03-17 00:41:38 +01:00
parent f6cb5d563c
commit 0e57d70b95
1 changed files with 35 additions and 0 deletions
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35
src/r_things.c
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@ -312,6 +312,38 @@ static boolean GetFramesAndRotationsFromLongLumpName(
return true;
}
static UINT8 GetOppositeRotation(UINT8 rotation, UINT8 flags)
{
if (flags & ~SRF_3DMASK)
I_Error("GetOppositeRotation: rotation type not supported");
UINT8 numrotations = (flags == SRF_3D) ? 8 : 16;
return (rotation == 1) ? 1 : numrotations + 2 - rotation;
}
static void MirrorMissingRotations(void)
{
for (UINT32 framenum = 0; framenum < maxframe; framenum++)
{
spriteframe_t *frame = &sprtemp[framenum];
if (!(frame->rotate & SRF_3DMASK))
continue;
UINT8 numrotations = frame->rotate == SRF_3D ? 8 : 16;
for (UINT8 rotation = 1; rotation <= numrotations; rotation++)
{
if (frame->lumppat[rotation - 1] != LUMPERROR)
continue;
UINT8 baserotation = GetOppositeRotation(rotation, frame->rotate);
UINT32 lumpnum = frame->lumppat[baserotation - 1];
R_InstallSpriteLump(WADFILENUM(lumpnum), LUMPNUM(lumpnum), frame->lumpid[baserotation], framenum, rotation, 1);
}
}
}
// Some checks to help development
static void CheckFrame(const char *sprname)
{
@ -484,6 +516,9 @@ boolean R_AddSingleSpriteDef(const char *sprname, spritedef_t *spritedef, UINT16
maxframe++;
if (longname)
MirrorMissingRotations();
CheckFrame(sprname);
// allocate space for the frames present and copy sprtemp to it