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Add R_SpriteRotationAngle function

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Gets the rotation angle for the mobj's sprite. Meant for pitch & roll later, but that part is if'd out currently and just returns mobj->rollangle
This commit is contained in:
Sally Coolatta 2020-10-30 15:54:58 -04:00
parent 7c2a241042
commit b6129a6d42
4 changed files with 33 additions and 6 deletions
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10
src/hardware/hw_main.c
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@ -5078,6 +5078,7 @@ static void HWR_ProjectSprite(mobj_t *thing)
#ifdef ROTSPRITE
patch_t *rotsprite = NULL;
INT32 rollangle = 0;
angle_t spriterotangle = 0;
#endif
// uncapped/interpolation
@ -5245,18 +5246,21 @@ static void HWR_ProjectSprite(mobj_t *thing)
spr_topoffset = spritecachedinfo[lumpoff].topoffset;
#ifdef ROTSPRITE
if (interp.spriteroll
spriterotangle = R_SpriteRotationAngle(&interp);
if (spriterotangle != 0
&& !(splat && !(thing->renderflags & RF_NOSPLATROLLANGLE)))
{
if (papersprite)
{
// a positive rollangle should should pitch papersprites upwards relative to their facing angle
rollangle = R_GetRollAngle(InvAngle(interp.spriteroll));
rollangle = R_GetRollAngle(InvAngle(spriterotangle));
}
else
{
rollangle = R_GetRollAngle(interp.spriteroll);
rollangle = R_GetRollAngle(spriterotangle);
}
rotsprite = Patch_GetRotatedSprite(sprframe, (thing->frame & FF_FRAMEMASK), rot, flip, false, sprinfo, rollangle);
if (rotsprite != NULL)

2
src/r_patch.h
View file

@ -14,6 +14,7 @@
#include "r_defs.h"
#include "r_picformats.h"
#include "r_fps.h"
#include "doomdef.h"
// Patch functions
@ -38,6 +39,7 @@ patch_t *Patch_GetRotatedSprite(
size_t frame, size_t spriteangle,
boolean flip, boolean adjustfeet,
void *info, INT32 rotationangle);
angle_t R_SpriteRotationAngle(interpmobjstate_t *interp);
INT32 R_GetRollAngle(angle_t rollangle);
#endif

18
src/r_patchrotation.c
View file

@ -13,11 +13,29 @@
#include "r_things.h" // FEETADJUST
#include "z_zone.h"
#include "w_wad.h"
#include "r_main.h" // R_PointToAngle
#ifdef ROTSPRITE
fixed_t rollcosang[ROTANGLES];
fixed_t rollsinang[ROTANGLES];
//
// R_SpriteRotationAngle
//
// Gets the rollangle for the input object.
//
angle_t R_SpriteRotationAngle(interpmobjstate_t *interp)
{
angle_t viewingAngle = R_PointToAngle(interp->x, interp->y);
fixed_t pitchMul = -FINESINE(viewingAngle >> ANGLETOFINESHIFT);
fixed_t rollMul = FINECOSINE(viewingAngle >> ANGLETOFINESHIFT);
angle_t rollOrPitch = FixedMul(interp->pitch, pitchMul) + FixedMul(interp->roll, rollMul);
return (rollOrPitch + interp->spriteroll);
}
INT32 R_GetRollAngle(angle_t rollangle)
{
INT32 ra = AngleFixed(rollangle)>>FRACBITS;

9
src/r_things.c
View file

@ -1594,6 +1594,7 @@ static void R_ProjectSprite(mobj_t *thing)
#ifdef ROTSPRITE
patch_t *rotsprite = NULL;
INT32 rollangle = 0;
angle_t spriterotangle = 0;
#endif
// uncapped/interpolation
@ -1743,17 +1744,19 @@ static void R_ProjectSprite(mobj_t *thing)
patch = W_CachePatchNum(sprframe->lumppat[rot], PU_SPRITE);
#ifdef ROTSPRITE
if (interp.spriteroll
spriterotangle = R_SpriteRotationAngle(&interp);
if (spriterotangle != 0
&& !(splat && !(thing->renderflags & RF_NOSPLATROLLANGLE)))
{
if (papersprite && ang >= ANGLE_180)
{
// Makes Software act much more sane like OpenGL
rollangle = R_GetRollAngle(InvAngle(interp.spriteroll));
rollangle = R_GetRollAngle(InvAngle(spriterotangle));
}
else
{
rollangle = R_GetRollAngle(interp.spriteroll);
rollangle = R_GetRollAngle(spriterotangle);
}
rotsprite = Patch_GetRotatedSprite(sprframe, (thing->frame & FF_FRAMEMASK), rot, flip, false, sprinfo, rollangle);