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Miscellaneous bug fixes

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This commit is contained in:
GuyPerfect
2024-10-19 22:56:23 -05:00
parent e9f5437c1f
commit 50903c7513
4 changed files with 15 additions and 19 deletions
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core/vip.c
+10 -14
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@@ -606,7 +606,7 @@ static void vipDrawObjects(VB *sim, int group) {
start = group == 0 ? 0 : (sim->vip.spt[group - 1] + 1) & 1023;
stop = sim->vip.spt[group];
top = (int32_t) sim->vip.xp.sbcount << 3;
for (o = stop;; o = (o - 1) & 1023) {
for (o = stop; o != -1; o = o == start ? -1 : (o - 1) & 1023) {
obj = &sim->vip.ram[0x3E000 | o << 3];
/* Validate object is enabled */
@@ -655,15 +655,12 @@ static void vipDrawObjects(VB *sim, int group) {
pixel = src[sy << 1 | sx >> 2] >> ((sx & 3) << 1) & 3;
if (pixel != 0)
dest[y] = plt[pixel]; /* TODO: Research clocks */
} /* x */
} /* y */
} /* y */
} /* x */
} /* i */
/* All objects have been drawn */
if (o == start)
break;
}
}
@@ -792,13 +789,12 @@ static void vipDrawWorld(VB *sim, uint8_t *world, uint16_t attr) {
param += 4;
break;
case 2: /* Affine */
dx = (int32_t) (int16_t) vipParam(param | 6) << 7;
dy = (int32_t) (int16_t) vipParam(param | 8) << 7;
mp = (int32_t) (int16_t) vipParam(param | 2);
mx = ((int32_t) (int16_t) vipParam(param ) << 13) +
dx * (left - ((mp < 0) ^ i ? mp : 0));
my = ((int32_t) (int16_t) vipParam(param | 4) << 13) +
dy * (left - ((mp < 0) ^ i ? mp : 0));
dx = (int32_t) (int16_t) vipParam(param|6) << 7;
dy = (int32_t) (int16_t) vipParam(param|8) << 7;
mp = (int32_t) (int16_t) vipParam(param|2);
mp = left - wx - ((mp < 0) ^ i ? mp : 0);
mx = ((int32_t) (int16_t) vipParam(param ) << 13) + dx*mp;
my = ((int32_t) (int16_t) vipParam(param|4) << 13) + dy*mp;
param += 16;
}
@@ -882,7 +878,7 @@ static void vipRender(VB *sim) {
attr = busReadBuffer(world, VB_U16);
/* Non-graphical world */
if (attr & 0x0020) /* END */
if (attr & 0x0040) /* END */
break; /* Control world */
if ((attr & 0xC000) == 0) /* LON, RON */
continue; /* Dummy world */