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Add field-of-view support in software mode

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This commit is contained in:
fickleheart 2019-02-23 10:31:37 -06:00
parent d6b9a75230
commit 4143c31176
2 changed files with 12 additions and 20 deletions
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15
src/p_user.c
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@ -8295,9 +8295,6 @@ boolean P_MoveChaseCamera(player_t *player, camera_t *thiscam, boolean resetcall
if (mo->eflags & MFE_VERTICALFLIP)
camheight += thiscam->height;
if (splitscreen == 1)
camspeed = (3*camspeed)/4;
if (camspeed > FRACUNIT)
camspeed = FRACUNIT;
@ -8351,13 +8348,6 @@ boolean P_MoveChaseCamera(player_t *player, camera_t *thiscam, boolean resetcall
height -= FixedMul(height, player->kartstuff[k_boostcam]);
}
// in splitscreen modes, mess with the camera distances to make it feel proportional to how it feels normally
if (splitscreen == 1) // widescreen splits should get x1.5 distance
{
dist = FixedMul(dist, 3*FRACUNIT/2);
height = FixedMul(height, 3*FRACUNIT/2);
}
x = mo->x - FixedMul(FINECOSINE((angle>>ANGLETOFINESHIFT) & FINEMASK), dist);
y = mo->y - FixedMul(FINESINE((angle>>ANGLETOFINESHIFT) & FINEMASK), dist);
@ -8623,10 +8613,7 @@ boolean P_MoveChaseCamera(player_t *player, camera_t *thiscam, boolean resetcall
{
thiscam->momx = x - thiscam->x;
thiscam->momy = y - thiscam->y;
if (splitscreen == 1) // Wide-screen needs to follow faster, due to a smaller vertical:horizontal ratio of screen space
thiscam->momz = FixedMul(z - thiscam->z, (3*camspeed)/4);
else
thiscam->momz = FixedMul(z - thiscam->z, camspeed/2);
thiscam->momz = FixedMul(z - thiscam->z, camspeed/2);
}
thiscam->pan = pan;

17
src/r_main.c
View file

@ -56,6 +56,7 @@ INT32 centerx, centery;
fixed_t centerxfrac, centeryfrac;
fixed_t projection;
fixed_t projectiony; // aspect ratio
fixed_t fovtan; // field of view
// just for profiling purposes
size_t framecount;
@ -529,7 +530,7 @@ static void R_InitTextureMapping(void)
//
// Calc focallength
// so FIELDOFVIEW angles covers SCREENWIDTH.
focallength = FixedDiv(centerxfrac,
focallength = FixedDiv(projection,
FINETANGENT(FINEANGLES/4+/*cv_fov.value*/ FIELDOFVIEW/2));
#ifdef ESLOPE
@ -644,6 +645,7 @@ void R_ExecuteSetViewSize(void)
INT32 j;
INT32 level;
INT32 startmapl;
angle_t fov;
setsizeneeded = false;
@ -672,9 +674,12 @@ void R_ExecuteSetViewSize(void)
centerxfrac = centerx<<FRACBITS;
centeryfrac = centery<<FRACBITS;
projection = centerxfrac;
//projectiony = (((vid.height*centerx*BASEVIDWIDTH)/BASEVIDHEIGHT)/vid.width)<<FRACBITS;
projectiony = centerxfrac;
fov = FixedAngle(cv_fov.value/2) + ANGLE_90;
fovtan = FINETANGENT(fov >> ANGLETOFINESHIFT);
if (splitscreen == 1) // Splitscreen FOV should be adjusted to maintain expected vertical view
fovtan *= 2;
projection = projectiony = FixedDiv(centerxfrac, fovtan);
R_InitViewBuffer(scaledviewwidth, viewheight);
@ -700,7 +705,7 @@ void R_ExecuteSetViewSize(void)
for (i = 0; i < j; i++)
{
dy = ((i - viewheight*8)<<FRACBITS) + FRACUNIT/2;
dy = abs(dy);
dy = FixedMul(abs(dy), fovtan);
yslopetab[i] = FixedDiv(centerx*FRACUNIT, dy);
}
}
@ -815,7 +820,7 @@ subsector_t *R_IsPointInSubsector(fixed_t x, fixed_t y)
static mobj_t *viewmobj;
// WARNING: a should be unsigned but to add with 2048, it isn't!
#define AIMINGTODY(a) ((FINETANGENT((2048+(((INT32)a)>>ANGLETOFINESHIFT)) & FINEMASK)*160)>>FRACBITS)
#define AIMINGTODY(a) FixedDiv((FINETANGENT((2048+(((INT32)a)>>ANGLETOFINESHIFT)) & FINEMASK)*160)>>FRACBITS, fovtan)
// recalc necessary stuff for mouseaiming
// slopes are already calculated for the full possible view (which is 4*viewheight).