diff options
Diffstat (limited to 'engines/dreamweb/sprite.cpp')
| -rw-r--r-- | engines/dreamweb/sprite.cpp | 533 |
1 files changed, 533 insertions, 0 deletions
diff --git a/engines/dreamweb/sprite.cpp b/engines/dreamweb/sprite.cpp new file mode 100644 index 0000000000..d6347b62bf --- /dev/null +++ b/engines/dreamweb/sprite.cpp @@ -0,0 +1,533 @@ +/* ScummVM - Graphic Adventure Engine + * + * ScummVM is the legal property of its developers, whose names + * are too numerous to list here. Please refer to the COPYRIGHT + * file distributed with this source distribution. + * + * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + */ + +#include "dreamweb/dreamweb.h" +#include "engines/util.h" +#include "graphics/surface.h" + +namespace DreamGen { + +Sprite *DreamGenContext::spritetable() { + push(es); + es = data.word(kBuffers); + Sprite *sprite = (Sprite *)es.ptr(kSpritetable, 16 * sizeof(Sprite)); + es = pop(); + return sprite; +} + +void DreamGenContext::printsprites() { + for (size_t priority = 0; priority < 7; ++priority) { + Sprite *sprites = spritetable(); + for (size_t j = 0; j < 16; ++j) { + const Sprite &sprite = sprites[j]; + if (READ_LE_UINT16(&sprite.updateCallback) == 0x0ffff) + continue; + if (priority != sprite.priority) + continue; + if (sprite.hidden == 1) + continue; + printasprite(&sprite); + } + } +} + +void DreamGenContext::printasprite(const Sprite *sprite) { + uint16 x, y; + if (sprite->y >= 220) { + y = data.word(kMapady) - (256 - sprite->y); + } else { + y = sprite->y + data.word(kMapady); + } + + if (sprite->x >= 220) { + x = data.word(kMapadx) - (256 - sprite->x); + } else { + x = sprite->x + data.word(kMapadx); + } + + uint8 c; + if (sprite->b29 != 0) + c = 8; + else + c = 0; + uint8 width, height; + showframe(READ_LE_UINT16(&sprite->w6), x, y, sprite->b15, c, &width, &height); +} + +void DreamGenContext::clearsprites() { + memset(spritetable(), 0xff, sizeof(Sprite) * 16); +} + +Sprite *DreamGenContext::makesprite(uint8 x, uint8 y, uint16 updateCallback, uint16 somethingInDx, uint16 somethingInDi) { + Sprite *sprite = spritetable(); + while (sprite->b15 != 0xff) { // NB: No boundchecking in the original code either + ++sprite; + } + + WRITE_LE_UINT16(&sprite->updateCallback, updateCallback); + sprite->x = x; + sprite->y = y; + WRITE_LE_UINT16(&sprite->w6, somethingInDx); + WRITE_LE_UINT16(&sprite->w8, somethingInDi); + sprite->w2 = 0xffff; + sprite->b15 = 0; + sprite->delay = 0; + return sprite; +} + +void DreamGenContext::makesprite() { // NB: returns new sprite in es:bx + Sprite *sprite = makesprite(si & 0xff, si >> 8, cx, dx, di); + + // Recover es:bx from sprite + es = data.word(kBuffers); + bx = kSpritetable; + Sprite *sprites = (Sprite *)es.ptr(bx, sizeof(Sprite) * 16); + bx += sizeof(Sprite) * (sprite - sprites); + // +} + +void DreamGenContext::spriteupdate() { + Sprite *sprites = spritetable(); + sprites[0].hidden = data.byte(kRyanon); + + Sprite *sprite = sprites; + for (size_t i=0; i < 16; ++i) { + uint16 updateCallback = READ_LE_UINT16(&sprite->updateCallback); + if (updateCallback != 0xffff) { + sprite->w24 = sprite->w2; + if (updateCallback == addr_mainman) // NB : Let's consider the callback as an enum while more code is not ported to C++ + mainmanCPP(sprite); + else { + assert(updateCallback == addr_backobject); + backobject(sprite); + } + } + + if (data.byte(kNowinnewroom) == 1) + break; + ++sprite; + } +} + +void DreamGenContext::initman() { + Sprite *sprite = makesprite(data.byte(kRyanx), data.byte(kRyany), addr_mainman, data.word(kMainsprites), 0); + sprite->priority = 4; + sprite->b22 = 0; + sprite->b29 = 0; +} + +void DreamGenContext::mainmanCPP(Sprite *sprite) { + push(es); + push(ds); + + // Recover es:bx from sprite + es = data.word(kBuffers); + bx = kSpritetable; + Sprite *sprites = (Sprite *)es.ptr(bx, sizeof(Sprite) * 16); + bx += 32 * (sprite - sprites); + // + + if (data.byte(kResetmanxy) == 1) { + data.byte(kResetmanxy) = 0; + sprite->x = data.byte(kRyanx); + sprite->y = data.byte(kRyany); + sprite->b29 = 0; + } + --sprite->b22; + if (sprite->b22 != 0xff) { + ds = pop(); + es = pop(); + return; + } + sprite->b22 = 0; + if (data.byte(kTurntoface) != data.byte(kFacing)) { + aboutturn(sprite); + } else { + if ((data.byte(kTurndirection) != 0) && (data.byte(kLinepointer) == 254)) { + data.byte(kReasseschanges) = 1; + if (data.byte(kFacing) == data.byte(kLeavedirection)) + checkforexit(); + } + data.byte(kTurndirection) = 0; + if (data.byte(kLinepointer) == 254) { + sprite->b29 = 0; + } else { + ++sprite->b29; + if (sprite->b29 == 11) + sprite->b29 = 1; + walking(sprite); + if (data.byte(kLinepointer) != 254) { + if ((data.byte(kFacing) & 1) == 0) + walking(sprite); + else if ((sprite->b29 != 2) && (sprite->b29 != 7)) + walking(sprite); + } + if (data.byte(kLinepointer) == 254) { + if (data.byte(kTurntoface) == data.byte(kFacing)) { + data.byte(kReasseschanges) = 1; + if (data.byte(kFacing) == data.byte(kLeavedirection)) + checkforexit(); + } + } + } + } + static const uint8 facelist[] = { 0,60,33,71,11,82,22,93 }; + sprite->b15 = sprite->b29 + facelist[data.byte(kFacing)]; + data.byte(kRyanx) = sprite->x; + data.byte(kRyany) = sprite->y; + + ds = pop(); + es = pop(); +} + +void DreamGenContext::walking() { + Sprite *sprite = (Sprite *)es.ptr(bx, sizeof(Sprite)); + walking(sprite); +} + +void DreamGenContext::walking(Sprite *sprite) { + uint8 comp; + if (data.byte(kLinedirection) != 0) { + --data.byte(kLinepointer); + comp = 200; + } else { + ++data.byte(kLinepointer); + comp = data.byte(kLinelength); + } + if (data.byte(kLinepointer) < comp) { + sprite->x = data.byte(kLinedata + data.byte(kLinepointer) * 2 + 0); + sprite->y = data.byte(kLinedata + data.byte(kLinepointer) * 2 + 1); + return; + } + + data.byte(kLinepointer) = 254; + data.byte(kManspath) = data.byte(kDestination); + if (data.byte(kDestination) == data.byte(kFinaldest)) { + facerightway(); + return; + } + data.byte(kDestination) = data.byte(kFinaldest); + push(es); + push(bx); + autosetwalk(); + bx = pop(); + es = pop(); +} + +void DreamGenContext::aboutturn(Sprite *sprite) { + bool incdir = true; + + if (data.byte(kTurndirection) == 1) + incdir = true; + else if ((int8)data.byte(kTurndirection) == -1) + incdir = false; + else { + if (data.byte(kFacing) < data.byte(kTurntoface)) { + uint8 delta = data.byte(kTurntoface) - data.byte(kFacing); + if (delta >= 4) + incdir = false; + else + incdir = true; + } else { + uint8 delta = data.byte(kFacing) - data.byte(kTurntoface); + if (delta >= 4) + incdir = true; + else + incdir = false; + } + } + + if (incdir) { + data.byte(kTurndirection) = 1; + data.byte(kFacing) = (data.byte(kFacing) + 1) & 7; + sprite->b29 = 0; + } else { + data.byte(kTurndirection) = -1; + data.byte(kFacing) = (data.byte(kFacing) - 1) & 7; + sprite->b29 = 0; + } +} + +void DreamGenContext::backobject(Sprite *sprite) { + push(ds); + + ds = data.word(kSetdat); + di = READ_LE_UINT16(&sprite->obj_data); + ObjData *objData = (ObjData *)ds.ptr(di, 0); + + if (sprite->delay != 0) { + --sprite->delay; + ds = pop(); + return; + } + + sprite->delay = objData->delay; + if (objData->type == 6) + widedoor(sprite, objData); + else if (objData->type == 5) + random(sprite, objData); + else if (objData->type == 4) + lockeddoorway(sprite, objData); + else if (objData->type == 3) + liftsprite(sprite, objData); + else if (objData->type == 2) + doorway(sprite, objData); + else if (objData->type == 1) + constant(sprite, objData); + else + steady(sprite, objData); + + ds = pop(); +} + +void DreamGenContext::constant(Sprite *sprite, ObjData *objData) { + ++sprite->frame; + if (objData->b18[sprite->frame] == 255) { + sprite->frame = 0; + } + uint8 b18 = objData->b18[sprite->frame]; + objData->b17 = b18; + sprite->b15 = b18; +} + +void DreamGenContext::random(Sprite *sprite, ObjData *objData) { + randomnum1(); + uint16 r = ax; + sprite->b15 = objData->b18[r&7]; +} + +void DreamGenContext::doorway(Sprite *sprite, ObjData *objData) { + data.byte(kDoorcheck1) = -24; + data.byte(kDoorcheck2) = 10; + data.byte(kDoorcheck3) = -30; + data.byte(kDoorcheck4) = 10; + dodoor(sprite, objData); +} + +void DreamGenContext::widedoor(Sprite *sprite, ObjData *objData) { + data.byte(kDoorcheck1) = -24; + data.byte(kDoorcheck2) = 24; + data.byte(kDoorcheck3) = -30; + data.byte(kDoorcheck4) = 24; + dodoor(sprite, objData); +} + +void DreamGenContext::dodoor() { + Sprite *sprite = (Sprite *)es.ptr(bx, sizeof(Sprite)); + ObjData *objData = (ObjData *)ds.ptr(di, 0); + dodoor(sprite, objData); +} + +void DreamGenContext::dodoor(Sprite *sprite, ObjData *objData) { + uint8 ryanx = data.byte(kRyanx); + uint8 ryany = data.byte(kRyany); + int8 deltax = ryanx - sprite->x; + int8 deltay = ryany - sprite->y; + if (ryanx < sprite->x) { + if (deltax < (int8)data.byte(kDoorcheck1)) + goto shutdoor; + } else { + if (deltax >= data.byte(kDoorcheck2)) + goto shutdoor; + } + if (ryany < sprite->y) { + if (deltay < (int8)data.byte(kDoorcheck3)) + goto shutdoor; + } else { + if (deltay >= data.byte(kDoorcheck4)) + goto shutdoor; + } +//opendoor: + if ((data.byte(kThroughdoor) == 1) && (sprite->frame == 0)) + sprite->frame = 6; + + ++sprite->frame; + if (sprite->frame == 1) { //doorsound2 + if (data.byte(kReallocation) == 5) //hoteldoor2 + al = 13; + else + al = 0; + playchannel1(); + } + if (objData->b18[sprite->frame] == 255) { + --sprite->frame; + } + sprite->b15 = objData->b17 = objData->b18[sprite->frame]; + data.byte(kThroughdoor) = 1; + return; +shutdoor: + if (sprite->frame == 5) { //doorsound1; + if (data.byte(kReallocation) == 5) //hoteldoor1 + al = 13; + else + al = 1; + playchannel1(); + } + if (sprite->frame != 0) { + --sprite->frame; + } + sprite->b15 = objData->b17 = objData->b18[sprite->frame]; + if (sprite->frame == 5) //nearly + data.byte(kThroughdoor) = 0; +} + +void DreamGenContext::steady(Sprite *sprite, ObjData *objData) { + uint8 b18 = objData->b18[0]; + objData->b17 = b18; + sprite->b15 = b18; +} + +void DreamGenContext::lockeddoorway() { + Sprite *sprite = (Sprite *)es.ptr(bx, sizeof(Sprite)); + ObjData *objData = (ObjData *)ds.ptr(di, 0); + lockeddoorway(sprite, objData); +} + +void DreamGenContext::lockeddoorway(Sprite *sprite, ObjData *objData) { + if (data.byte(kRyanx) < sprite->x) { + if (sprite->x - data.byte(kRyanx) > 24) + goto shutdoor2; + } else { + if (data.byte(kRyanx) - sprite->x >= 10) + goto shutdoor2; + } + + if (data.byte(kRyany) < sprite->y) { + if (sprite->y - data.byte(kRyany) > 30) + goto shutdoor2; + } else { + if (data.byte(kRyany) - sprite->y >= 12) + goto shutdoor2; + } + + if (data.byte(kThroughdoor) != 1) { + if (data.byte(kLockstatus) == 1) + goto shutdoor2; + } + + if (sprite->frame == 1) { + al = 0; + playchannel1(); + } + + if (sprite->frame == 6) { + turnpathonCPP(data.byte(kDoorpath)); + } + + if ((data.byte(kThroughdoor) == 1) && (sprite->frame == 0)) { + sprite->frame = 6; + } + + ++sprite->frame; + if (objData->b18[sprite->frame] == 255) { + --sprite->frame; + } + + sprite->b15 = objData->b17 = objData->b18[sprite->frame]; + if (sprite->frame == 5) + data.byte(kThroughdoor) = 1; + return; + +shutdoor2: + if (sprite->frame == 5) { + al = 1; + playchannel1(); + } + + if (sprite->frame != 0) { + --sprite->frame; + } + + data.byte(kThroughdoor) = 0; + sprite->b15 = objData->b17 = objData->b18[sprite->frame]; + + if (sprite->frame == 0) { + turnpathoffCPP(data.byte(kDoorpath)); + data.byte(kLockstatus) = 1; + } +} + +void DreamGenContext::liftsprite() { + Sprite *sprite = (Sprite *)es.ptr(bx, sizeof(Sprite)); + ObjData *objData = (ObjData *)ds.ptr(di, 0); + liftsprite(sprite, objData); +} + +void DreamGenContext::liftsprite(Sprite *sprite, ObjData *objData) { + uint8 liftFlag = data.byte(kLiftflag); + if (liftFlag == 0) { //liftclosed + turnpathoffCPP(data.byte(kLiftpath)); + + if (data.byte(kCounttoopen) != 0) { + _dec(data.byte(kCounttoopen)); + if (data.byte(kCounttoopen) == 0) + data.byte(kLiftflag) = 3; + } + sprite->frame = 0; + sprite->b15 = objData->b17 = objData->b18[sprite->frame]; + } + else if (liftFlag == 1) { //liftopen + turnpathonCPP(data.byte(kLiftpath)); + + if (data.byte(kCounttoclose) != 0) { + _dec(data.byte(kCounttoclose)); + if (data.byte(kCounttoclose) == 0) + data.byte(kLiftflag) = 2; + } + sprite->frame = 12; + sprite->b15 = objData->b17 = objData->b18[sprite->frame]; + } + else if (liftFlag == 3) { //openlift + if (sprite->frame == 12) { + data.byte(kLiftflag) = 1; + return; + } + ++sprite->frame; + if (sprite->frame == 1) { + al = 2; + liftnoise(); + } + sprite->b15 = objData->b17 = objData->b18[sprite->frame]; + } else { //closeLift + assert(liftFlag == 2); + if (sprite->frame == 0) { + data.byte(kLiftflag) = 0; + return; + } + --sprite->frame; + if (sprite->frame == 11) { + al = 3; + liftnoise(); + } + sprite->b15 = objData->b17 = objData->b18[sprite->frame]; + } +} + +void DreamGenContext::facerightway() { + uint8 *paths = getroomspathsCPP(); + uint8 dir = paths[8 * data.byte(kManspath) + 7]; + data.byte(kTurntoface) = dir; + data.byte(kLeavedirection) = dir; +} + +} /*namespace dreamgen */ + |