From ce8ae48222594dfc07f3dfc1e30e350d1c91422a Mon Sep 17 00:00:00 2001
From: toasterbabe <rollerorbital@gmail.com>
Date: Thu, 18 Aug 2016 12:55:04 +0100
Subject: [PATCH] I think this is as optimised as it's gonna get. Now onto the
flag!
---
src/r_things.c | 16 +++++++++-------
1 file changed, 9 insertions(+), 7 deletions(-)
diff --git a/src/r_things.c b/src/r_things.c
index 3d84813bb2..c8667ca401 100644
--- a/src/r_things.c
+++ b/src/r_things.c
@@ -1258,7 +1258,7 @@ static void R_ProjectSprite(mobj_t *thing)
if (flatsprite)
{
- fixed_t yscale2;
+ fixed_t yscale2, cosmul, sinmul;
INT32 range;
if (ang >= ANGLE_180)
@@ -1266,23 +1266,25 @@ static void R_ProjectSprite(mobj_t *thing)
offset *= -1;
offset2 *= -1;
}
- offset2 += offset;
- tr_x = thing->x + FixedMul(offset, FINECOSINE(thing->angle>>ANGLETOFINESHIFT)) - viewx;
- tr_y = thing->y + FixedMul(offset, FINESINE(thing->angle>>ANGLETOFINESHIFT)) - viewy;
+ cosmul = FINECOSINE(thing->angle>>ANGLETOFINESHIFT);
+ sinmul = FINESINE(thing->angle>>ANGLETOFINESHIFT);
+
+ tr_x += FixedMul(offset, cosmul);
+ tr_y += FixedMul(offset, sinmul);
gxt = FixedMul(tr_x, viewcos);
gyt = -FixedMul(tr_y, viewsin);
tz = gxt-gyt;
yscale = FixedDiv(projectiony, tz);
if (yscale < 64) return; // Fix some funky visuals
- tr_x = thing->x + FixedMul(offset2, FINECOSINE(thing->angle>>ANGLETOFINESHIFT)) - viewx;
- tr_y = thing->y + FixedMul(offset2, FINESINE(thing->angle>>ANGLETOFINESHIFT)) - viewy;
+ tr_x += FixedMul(offset2, cosmul);
+ tr_y += FixedMul(offset2, sinmul);
gxt = FixedMul(tr_x, viewcos);
gyt = -FixedMul(tr_y, viewsin);
tz = gxt-gyt;
yscale2 = FixedDiv(projectiony, tz);
- if (yscale2 < 64) return; // Fix some funky visuals
+ if (yscale2 < 64) return; // ditto
if (x2 > x1)
range = (x2 - x1);
--
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