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author | James Brown | 2003-01-14 10:06:56 +0000 |
---|---|---|
committer | James Brown | 2003-01-14 10:06:56 +0000 |
commit | 5bf741f96076fa5fcdc077d5fe0a6f4557bd1dcc (patch) | |
tree | 980a4f529c01bfd637470130a024f690adaa87c1 | |
parent | 639cb13da189d269f53a9f895fc6109cd926c211 (diff) | |
download | scummvm-rg350-5bf741f96076fa5fcdc077d5fe0a6f4557bd1dcc.tar.gz scummvm-rg350-5bf741f96076fa5fcdc077d5fe0a6f4557bd1dcc.tar.bz2 scummvm-rg350-5bf741f96076fa5fcdc077d5fe0a6f4557bd1dcc.zip |
Patch 667613: Extend gfxUsageBits[]
svn-id: r6453
-rw-r--r-- | scumm.dsp | 944 | ||||
-rw-r--r-- | scumm/actor.cpp | 30 | ||||
-rw-r--r-- | scumm/akos.cpp | 6 | ||||
-rw-r--r-- | scumm/costume.cpp | 2 | ||||
-rw-r--r-- | scumm/gfx.cpp | 26 | ||||
-rw-r--r-- | scumm/module.mk | 1 | ||||
-rw-r--r-- | scumm/object.cpp | 15 | ||||
-rw-r--r-- | scumm/saveload.cpp | 12 | ||||
-rw-r--r-- | scumm/saveload.h | 5 | ||||
-rw-r--r-- | scumm/scumm.h | 25 | ||||
-rw-r--r-- | scumm/usage_bits.cpp | 81 | ||||
-rw-r--r-- | scumm/usage_bits.h | 28 |
12 files changed, 647 insertions, 528 deletions
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End Source File +# Begin Source File + +SOURCE=.\scumm\smush\decoder.h +# End Source File +# Begin Source File + +SOURCE=.\scumm\smush\frenderer.cpp +# End Source File +# Begin Source File + +SOURCE=.\scumm\smush\frenderer.h +# End Source File +# Begin Source File + +SOURCE=.\scumm\smush\imuse_channel.cpp +# End Source File +# Begin Source File + +SOURCE=.\scumm\smush\mixer.h +# End Source File +# Begin Source File + +SOURCE=.\scumm\smush\palette.h +# End Source File +# Begin Source File + +SOURCE=.\scumm\smush\player.cpp +# End Source File +# Begin Source File + +SOURCE=.\scumm\smush\player.h +# End Source File +# Begin Source File + +SOURCE=.\scumm\smush\renderer.h +# End Source File +# Begin Source File + +SOURCE=.\scumm\smush\saud_channel.cpp +# End Source File +# Begin Source File + +SOURCE=.\scumm\smush\scumm_renderer.cpp +# End Source File +# Begin Source File + +SOURCE=.\scumm\smush\scumm_renderer.h +# End Source File +# End Group +# Begin Source File + +SOURCE=.\scumm\actor.cpp +# End Source File +# Begin Source File + +SOURCE=.\scumm\actor.h +# End Source File +# Begin Source File + +SOURCE=.\scumm\akos.cpp +# End Source File +# Begin Source File + +SOURCE=.\scumm\akos.h +# End Source File +# Begin Source File + +SOURCE=".\scumm\base-costume.h" +# End Source File +# Begin Source File + +SOURCE=.\scumm\boxes.cpp +# End Source File +# Begin Source File + +SOURCE=.\scumm\boxes.h +# End Source File +# Begin Source File + +SOURCE=.\scumm\bundle.cpp +# End Source File +# Begin Source File + +SOURCE=.\scumm\bundle.h +# End Source File +# Begin Source File + +SOURCE=.\scumm\charset.cpp +# End Source File +# Begin Source File + +SOURCE=.\scumm\charset.h +# End Source File +# Begin Source File + +SOURCE=.\scumm\costume.cpp +# End Source File +# Begin Source File + +SOURCE=.\scumm\costume.h +# End Source File +# Begin Source File + +SOURCE=.\scumm\debugger.cpp +# End Source File +# Begin Source File + +SOURCE=.\scumm\debugger.h +# End Source File +# Begin Source File + +SOURCE=.\scumm\debugrl.cpp +# End Source File +# Begin Source File + +SOURCE=.\scumm\debugrl.h +# End Source File +# Begin Source File + +SOURCE=.\scumm\dialogs.cpp +# End Source File +# Begin Source File + +SOURCE=.\scumm\dialogs.h +# End Source File +# Begin Source File + +SOURCE=.\scumm\gfx.cpp +# End Source File +# Begin Source File + +SOURCE=.\scumm\gfx.h +# End Source File +# Begin Source File + +SOURCE=.\scumm\usage_bits.cpp +# End Source File +# Begin Source File + +SOURCE=.\scumm\usage_bits.h +# End Source File +# Begin Source File + +SOURCE=.\scumm\imuse.h +# End Source File +# Begin Source File + +SOURCE=.\scumm\imuse_digi.cpp +# End Source File +# Begin Source File + +SOURCE=.\scumm\imuse_digi.h +# End Source File +# Begin Source File + +SOURCE=.\scumm\instrument.cpp +# End Source File +# Begin Source File + +SOURCE=.\scumm\instrument.h +# End Source File +# Begin Source File + +SOURCE=.\scumm\intern.h +# End Source File +# Begin Source File + +SOURCE=.\scumm\nut_renderer.cpp +# End Source File +# Begin Source File + +SOURCE=.\scumm\nut_renderer.h +# End Source File +# Begin Source File + +SOURCE=.\scumm\object.cpp +# End Source File +# Begin Source File + +SOURCE=.\scumm\object.h +# End Source File +# Begin Source File + +SOURCE=.\scumm\resource.cpp +# End Source File +# Begin Source File + +SOURCE=.\scumm\resource.h +# End Source File +# Begin Source File + +SOURCE=.\scumm\resource_v2.cpp +# End Source File +# Begin Source File + +SOURCE=.\scumm\resource_v3.cpp +# End Source File +# Begin Source File + +SOURCE=.\scumm\resource_v4.cpp +# End Source File +# Begin Source File + +SOURCE=.\scumm\saveload.cpp +# End Source File +# Begin Source File + +SOURCE=.\scumm\saveload.h +# End Source File +# Begin Source File + +SOURCE=.\scumm\script.cpp +# End Source File +# Begin Source File + +SOURCE=.\scumm\script_v5.cpp +# End Source File +# Begin Source File + +SOURCE=.\scumm\script_v6.cpp +# End Source File +# Begin Source File + +SOURCE=.\scumm\script_v8.cpp +# End Source File +# Begin Source File + +SOURCE=.\scumm\scumm.h +# End Source File +# Begin Source File + +SOURCE=.\scumm\scummvm.cpp +# End Source File +# Begin Source File + +SOURCE=.\scumm\sound.cpp +# End Source File +# Begin Source File + +SOURCE=.\scumm\sound.h +# End Source File +# Begin Source File + +SOURCE=.\scumm\string.cpp +# End Source File +# Begin Source File + +SOURCE=.\scumm\vars.cpp +# End Source File +# Begin Source File + +SOURCE=.\scumm\verbs.cpp +# End Source File +# Begin Source File + +SOURCE=.\scumm\verbs.h +# End Source File +# End Group +# End Target +# End Project diff --git a/scumm/actor.cpp b/scumm/actor.cpp index fc51f7c177..478156bb8f 100644 --- a/scumm/actor.cpp +++ b/scumm/actor.cpp @@ -28,6 +28,7 @@ #include "costume.h" #include "resource.h" #include "sound.h" +#include "usage_bits.h" #include <math.h> @@ -1100,7 +1101,6 @@ void Actor::animateLimb(int limb, int f) void Scumm::setActorRedrawFlags(bool fg, bool bg) { int i, j; - uint32 bits; if (_fullRedraw) { for (j = 0; j < NUM_ACTORS; j++) { @@ -1112,10 +1112,10 @@ void Scumm::setActorRedrawFlags(bool fg, bool bg) } } else { for (i = 0; i < gdi._numStrips; i++) { - bits = gfxUsageBits[_screenStartStrip + i]; - if (bits & 0x3FFFFFFF) { + int strip = _screenStartStrip + i; + if (testGfxAnyUsageBits(strip)) { for (j = 0; j < NUM_ACTORS; j++) { - if ((bits & (1 << j)) && bits != (uint32)(1 << j)) { + if (testGfxUsageBit(strip, j) && testGfxOtherUsageBits(strip, j)) { Actor *a = derefActor(j); if (fg) a->needRedraw = true; @@ -1130,15 +1130,13 @@ void Scumm::setActorRedrawFlags(bool fg, bool bg) int Scumm::getActorFromPos(int x, int y) { - uint32 drawbits; int i; - drawbits = gfxUsageBits[x >> 3]; - if (!(drawbits & 0x3FFFFFFF)) + if (!testGfxAnyUsageBits(x >> 3)) return 0; for (i = 1; i < NUM_ACTORS; i++) { Actor *a = derefActor(i); - if (drawbits & (1 << i) && !getClass(i, 32) && y >= a->top && y <= a->bottom) { + if (testGfxUsageBit(x >> 3, i) && !getClass(i, 32) && y >= a->top && y <= a->bottom) { return i; } } @@ -1541,23 +1539,17 @@ void Actor::remapActorPalette(int r_fact, int g_fact, int b_fact, int threshold) void Scumm::resetActorBgs() { Actor *a; - int i; - uint32 onlyActorFlags, bitpos; + int i, j; for (i = 0; i < gdi._numStrips; i++) { - onlyActorFlags = (gfxUsageBits[_screenStartStrip + i] &= 0x3FFFFFFF); + int strip = _screenStartStrip + i; a = getFirstActor(); - bitpos = 1; - - while (onlyActorFlags) { - if (onlyActorFlags & 1 && a->top != 0xFF && a->needBgReset) { - gfxUsageBits[_screenStartStrip + i] ^= bitpos; - + for (j = 0; j < NUM_ACTORS; j++) { + if (testGfxUsageBit(strip, j) && a->top != 0xFF && a->needBgReset) { + clearGfxUsageBit(strip, j); if ((a->bottom - a->top) >= 0) gdi.resetBackground(a->top, a->bottom, i); } - bitpos <<= 1; - onlyActorFlags >>= 1; a++; } } diff --git a/scumm/akos.cpp b/scumm/akos.cpp index c1734bee29..69ba36919c 100644 --- a/scumm/akos.cpp +++ b/scumm/akos.cpp @@ -829,7 +829,7 @@ void AkosRenderer::codec1() if (v1.skip_width <= 0 || _height <= 0) return; - _vm->updateDirtyRect(0, x_left, x_right, y_top, y_bottom, 1 << _dirty_id); + _vm->updateDirtyRect(0, x_left, x_right, y_top, y_bottom, _dirty_id); y_clipping = ((uint) y_bottom > outheight || y_top < 0); @@ -949,7 +949,7 @@ void AkosRenderer::codec5() { if ((clip_right <= clip_left) || (clip_top >= clip_bottom)) return; - _vm->updateDirtyRect(0, clip_left, clip_right + 1, clip_top, clip_bottom + 1, 1 << _dirty_id); + _vm->updateDirtyRect(0, clip_left, clip_right + 1, clip_top, clip_bottom + 1, _dirty_id); if (_draw_top > clip_top) _draw_top = clip_top; @@ -1280,7 +1280,7 @@ void AkosRenderer::codec16() { if ((clip_left >= clip_right) || (clip_top >= clip_bottom)) return; - _vm->updateDirtyRect(0, clip_left, clip_right + 1, clip_top, clip_bottom + 1, 1 << _dirty_id); + _vm->updateDirtyRect(0, clip_left, clip_right + 1, clip_top, clip_bottom + 1, _dirty_id); if (_draw_top > clip_top) _draw_top = clip_top; diff --git a/scumm/costume.cpp b/scumm/costume.cpp index c30dea3625..5ebcba3562 100644 --- a/scumm/costume.cpp +++ b/scumm/costume.cpp @@ -213,7 +213,7 @@ byte CostumeRenderer::mainRoutine(int slot, int frame) _scaleIndexXStep = 1; _ypostop = _ypos; - _vm->updateDirtyRect(0, _left, _right + 1, _top, _bottom, 1 << _dirty_id); + _vm->updateDirtyRect(0, _left, _right + 1, _top, _bottom, _dirty_id); if (_top >= (int)_outheight || _bottom <= 0) return 0; diff --git a/scumm/gfx.cpp b/scumm/gfx.cpp index 1d55780bcf..50f3810c97 100644 --- a/scumm/gfx.cpp +++ b/scumm/gfx.cpp @@ -24,6 +24,7 @@ #include "actor.h" #include "charset.h" #include "resource.h" +#include "usage_bits.h" #include "util.h" @@ -295,12 +296,10 @@ VirtScreen *Scumm::findVirtScreen(int y) return NULL; } -void Scumm::updateDirtyRect(int virt, int left, int right, int top, int bottom, uint32 dirtybits) +void Scumm::updateDirtyRect(int virt, int left, int right, int top, int bottom, int dirtybit) { VirtScreen *vs = &virtscr[virt]; int lp, rp; - uint32 *sp; - int num; if (top > vs->height || left > vs->width || right < 0 || bottom < 0) return; @@ -314,7 +313,7 @@ void Scumm::updateDirtyRect(int virt, int left, int right, int top, int bottom, if (right > vs->width) right = vs->width; - if (virt == 0 && dirtybits) { + if (virt == 0 && dirtybit) { lp = (left >> 3) + _screenStartStrip; if (lp < 0) lp = 0; @@ -331,13 +330,8 @@ void Scumm::updateDirtyRect(int virt, int left, int right, int top, int bottom, if (rp >= 200) rp = 200; } - if (lp <= rp) { - num = rp - lp + 1; - sp = &gfxUsageBits[lp]; - do { - *sp++ |= dirtybits; - } while (--num); - } + for (; lp <= rp; lp++) + setGfxUsageBit(lp, dirtybit); } setVirtscreenDirty(vs, left, top, right, bottom); @@ -632,7 +626,7 @@ void Scumm::drawFlashlight() // Redraw any actors "under" the flashlight for (i = _flashlight.x/8; i < (_flashlight.x+_flashlight.w)/8; i++) { - gfxUsageBits[_screenStartStrip + i] |= 0x80000000; + setGfxUsageBit(_screenStartStrip + i, USAGE_BIT_DIRTY); virtscr[0].tdirty[i] = 0; virtscr[0].bdirty[i] = virtscr[0].height; } @@ -682,7 +676,7 @@ void Scumm::redrawBGAreas() // Redraw parts of the background which are marked as dirty. if (!_fullRedraw && _BgNeedsRedraw) { for (i = 0; i != gdi._numStrips; i++) { - if (gfxUsageBits[_screenStartStrip + i] & 0x80000000) { + if (testGfxUsageBit(_screenStartStrip + i, USAGE_BIT_DIRTY)) { redrawBGStrip(i, 1); } } @@ -723,10 +717,10 @@ void Scumm::redrawBGStrip(int start, int num) { int s = _screenStartStrip + start; - assert(s >= 0 && (size_t) s < sizeof(gfxUsageBits) / sizeof(gfxUsageBits[0])); + assert(s >= 0 && (size_t) s < sizeof(gfxUsageBits) / (3 * sizeof(gfxUsageBits[0]))); for (int i = 0; i < num; i++) - gfxUsageBits[s + i] |= 0x80000000; + setGfxUsageBit(s + i, USAGE_BIT_DIRTY); gdi.drawBitmap(getResourceAddress(rtRoom, _roomResource) + _IM00_offs, &virtscr[0], s, 0, virtscr[0].height, s, num, 0); @@ -775,7 +769,7 @@ void Scumm::restoreBG(int left, int top, int right, int bottom, byte backColor) if (bottom >= height) bottom = height; - updateDirtyRect(vs->number, left, right, top - topline, bottom - topline, 0x40000000); + updateDirtyRect(vs->number, left, right, top - topline, bottom - topline, USAGE_BIT_RESTORED); int offset = (top - topline) * _realWidth + vs->xstart + left; backbuff = vs->screenPtr + offset; diff --git a/scumm/module.mk b/scumm/module.mk index 49aeae4762..7567d99a41 100644 --- a/scumm/module.mk +++ b/scumm/module.mk @@ -27,6 +27,7 @@ SCUMM_OBJS = \ scumm/scummvm.o \ scumm/sound.o \ scumm/string.o \ + scumm/usage_bits.o \ scumm/vars.o \ scumm/verbs.o diff --git a/scumm/object.cpp b/scumm/object.cpp index 0c7615858d..500b14c0ea 100644 --- a/scumm/object.cpp +++ b/scumm/object.cpp @@ -25,6 +25,7 @@ #include "actor.h" #include "object.h" #include "resource.h" +#include "usage_bits.h" bool Scumm::getClass(int obj, int cls) { @@ -393,7 +394,7 @@ void Scumm::drawObject(int obj, int arg) continue; if (tmp < _screenStartStrip || tmp > _screenEndStrip) continue; - gfxUsageBits[tmp] |= 0x80000000; + setGfxUsageBit(tmp, USAGE_BIT_DIRTY); if (tmp < x) x = tmp; numstrip++; @@ -762,17 +763,13 @@ void Scumm::clearOwnerOf(int obj) void Scumm::removeObjectFromRoom(int obj) { - int i, cnt; - uint32 *ptr; + int i, j; for (i = 1; i < _numLocalObjects; i++) { if (_objs[i].obj_nr == (uint16)obj) { if (_objs[i].width != 0) { - ptr = &gfxUsageBits[_objs[i].x_pos >> 3]; - cnt = _objs[i].width >> 3; - do { - *ptr++ |= 0x80000000; - } while (--cnt); + for (j = 0; j < _objs[i].width; j++) + setGfxUsageBit((_objs[i].x_pos >> 3) + j, USAGE_BIT_DIRTY); } _BgNeedsRedraw = true; return; @@ -1619,7 +1616,7 @@ void Scumm::removeBlastObject(BlastObject *eo) for (i = left_strip; i <= right_strip; i++) gdi.resetBackground(top, bottom, i); - updateDirtyRect(0, left, right, top, bottom, 0x40000000); + updateDirtyRect(0, left, right, top, bottom, USAGE_BIT_RESTORED); } int Scumm::findLocalObjectSlot() diff --git a/scumm/saveload.cpp b/scumm/saveload.cpp index d5520e828a..5adeaa160f 100644 --- a/scumm/saveload.cpp +++ b/scumm/saveload.cpp @@ -424,9 +424,10 @@ void Scumm::saveOrLoad(Serializer *s, uint32 savegameVersion) MKLINE(Scumm, _palManipEnd, sleByte, VER_V10), MKLINE(Scumm, _palManipCounter, sleUint16, VER_V10), - // gfxUsageBits grew from 200 to 410 entries: + // gfxUsageBits grew from 200 to 410 entries. Then 3 * 410 entries: MKARRAY_OLD(Scumm, gfxUsageBits[0], sleUint32, 200, VER_V8, VER_V9), - MKARRAY(Scumm, gfxUsageBits[0], sleUint32, 410, VER_V10), + MKARRAY_OLD(Scumm, gfxUsageBits[0], sleUint32, 410, VER_V10, VER_V13), + MKARRAY(Scumm, gfxUsageBits[0], sleUint32, 3 * 410, VER_V14), MKLINE(Scumm, gdi._transparentColor, sleByte, VER_V8), MKARRAY(Scumm, _currentPalette[0], sleByte, 768, VER_V8), @@ -557,8 +558,15 @@ void Scumm::saveOrLoad(Serializer *s, uint32 savegameVersion) } } + // Because old savegames won't fill the entire gfxUsageBits[] array, + // clear it here just to be sure it won't hold any unforseen garbage. + memset(gfxUsageBits, 0, sizeof(gfxUsageBits)); + s->saveLoadEntries(this, mainEntries); + if (!s->isSaving() && savegameVersion < VER_V14) + upgradeGfxUsageBits(); + s->saveLoadArrayOf(_actors, NUM_ACTORS, sizeof(_actors[0]), actorEntries); if (savegameVersion < VER_V9) diff --git a/scumm/saveload.h b/scumm/saveload.h index 5934c8e154..b511a0c6d8 100644 --- a/scumm/saveload.h +++ b/scumm/saveload.h @@ -32,10 +32,11 @@ enum { VER_V10, VER_V11, VER_V12, - VER_V13 + VER_V13, + VER_V14 }; -#define CURRENT_VER VER_V13 +#define CURRENT_VER VER_V14 // To work around a warning in GCC 3.2 (and 3.1 ?) regarding non-POD types, diff --git a/scumm/scumm.h b/scumm/scumm.h index ab791d0f95..69c524774d 100644 --- a/scumm/scumm.h +++ b/scumm/scumm.h @@ -748,7 +748,7 @@ public: void useBompCursor(byte *im, int w, int h); - void updateDirtyRect(int virt, int left, int right, int top, int bottom, uint32 dirtybits); + void updateDirtyRect(int virt, int left, int right, int top, int bottom, int dirtybit); void setDirtyRange(int slot, int a, int height); void drawDirtyScreenParts(); void updateDirtyScreen(int slot); @@ -810,12 +810,18 @@ public: byte *_palManipPalette; byte *_palManipIntermediatePal; - /* For each screen strip, gfxUsageBits contains a bitmask. - * The lower 30 bits each correspond to one actor and signify if any part - * of that actor is currently contained in that strip. - * If the left most bit is set, the strip (background) is dirty needs to be redrawn. + /* For each of the 410 screen strips, gfxUsageBits contains a + * bitmask. The lower 80 bits each correspond to one actor and + * signify if any part of that actor is currently contained in + * that strip. + * + * If the leftmost bit is set, the strip (background) is dirty + * needs to be redrawn. + * + * The second leftmost bit is set by removeBlastObject() and + * restoreBG(), but I'm not yet sure why. */ - uint32 gfxUsageBits[410]; + uint32 gfxUsageBits[410 * 3]; byte *_shadowPalette; int _shadowPaletteSize; @@ -924,6 +930,13 @@ public: uint32 fileReadDword() { return _fileHandle.readUint32BE(); } #endif + void upgradeGfxUsageBits(); + void setGfxUsageBit(int strip, int bit); + void clearGfxUsageBit(int strip, int bit); + bool testGfxUsageBit(int strip, int bit); + bool testGfxAnyUsageBits(int strip); + bool testGfxOtherUsageBits(int strip, int bit); + /* Scumm Vars */ byte VAR_KEYPRESS; byte VAR_EGO; diff --git a/scumm/usage_bits.cpp b/scumm/usage_bits.cpp new file mode 100644 index 0000000000..8cbde6e38d --- /dev/null +++ b/scumm/usage_bits.cpp @@ -0,0 +1,81 @@ +/* ScummVM - Scumm Interpreter + * Copyright (C) 2001 Ludvig Strigeus + * Copyright (C) 2001-2003 The ScummVM project + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +#include "stdafx.h" +#include "scumm.h" +#include "usage_bits.h" + +void Scumm::upgradeGfxUsageBits() +{ + int i; + + for (i = 409; i >= 0; i--) { + bool dirty_bit = gfxUsageBits[i] & 0x80000000; + bool restored_bit = gfxUsageBits[i] & 0x40000000; + + gfxUsageBits[3 * i] = gfxUsageBits[i] & 0x3FFFFFFF; + if (dirty_bit) + setGfxUsageBit(i, USAGE_BIT_DIRTY); + if (restored_bit) + setGfxUsageBit(i, USAGE_BIT_RESTORED); + } +} + +void Scumm::setGfxUsageBit(int strip, int bit) +{ + gfxUsageBits[3 * strip + bit / 32] |= (1 << (bit - 1)); +} + +void Scumm::clearGfxUsageBit(int strip, int bit) +{ + gfxUsageBits[3 * strip + bit / 32] &= ~(1 << (bit - 1)); +} + +bool Scumm::testGfxUsageBit(int strip, int bit) +{ + return (gfxUsageBits[3 * strip + bit / 32] & (1 << (bit - 1))) != 0; +} + +bool Scumm::testGfxAnyUsageBits(int strip) +{ + // Exclude the DIRTY and RESTORED bits from the test + uint32 bitmask[3] = { 0x3FFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF }; + int i; + + for (i = 0; i < 3; i++) + if (gfxUsageBits[3 * strip + i] & bitmask[i]) + return true; + + return false; +} + +bool Scumm::testGfxOtherUsageBits(int strip, int bit) +{ + // Don't exclude the DIRTY and RESTORED bits from the test + uint32 bitmask[3] = { 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF }; + int i; + + bitmask[bit / 32] &= ~(1 << (bit - 1)); + + for (i = 0; i < 3; i++) + if (gfxUsageBits[3 * strip + i] & bitmask[i]) + return true; + + return false; +} diff --git a/scumm/usage_bits.h b/scumm/usage_bits.h new file mode 100644 index 0000000000..e2752ff61b --- /dev/null +++ b/scumm/usage_bits.h @@ -0,0 +1,28 @@ +/* ScummVM - Scumm Interpreter + * Copyright (C) 2001 Ludvig Strigeus + * Copyright (C) 2001-2003 The ScummVM project + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +#ifndef USAGE_BITS_H +#define USAGE_BITS_H + +enum { + USAGE_BIT_DIRTY = 96, + USAGE_BIT_RESTORED = 95 +}; + +#endif |