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/* 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 {
void DreamGenContext::doblocks() {
uint16 dstOffset = data.word(kMapady) * 320 + data.word(kMapadx);
uint16 mapOffset = kMap + data.byte(kMapy) * kMapwidth + data.byte(kMapx);
ds = data.word(kMapdata);
const uint8 *mapData = ds.ptr(mapOffset, 0);
ds = data.word(kBackdrop);
const uint8 *blocks = ds.ptr(kBlocks, 0);
es = data.word(kWorkspace);
uint8 *dstBuffer = es.ptr(dstOffset, 0);
for (size_t i = 0; i < 10; ++i) {
for (size_t j = 0; j < 11; ++j) {
uint16 blockType = mapData[j];
if (blockType != 0) {
uint8 *dst = dstBuffer + i * 320 * 16 + j * 16;
const uint8 *block = blocks + blockType * 256;
for (size_t k = 0; k < 4; ++k) {
memcpy(dst, block, 16);
block += 16;
dst += 320;
}
for (size_t k = 0; k < 12; ++k) {
memcpy(dst, block, 16);
memset(dst + 16, 0xdf, 4);
block += 16;
dst += 320;
}
dst += 4;
ax = 0x0dfdf;
memset(dst, 0xdf, 16);
dst += 320;
memset(dst, 0xdf, 16);
dst += 320;
memset(dst, 0xdf, 16);
dst += 320;
memset(dst, 0xdf, 16);
}
}
mapData += kMapwidth;
}
}
uint8 DreamGenContext::getxad(const uint8 *setData, uint8 *result) {
uint8 v0 = setData[0];
uint8 v1 = setData[1];
uint8 v2 = setData[2];
if (v0 != 0)
return 0;
if (v1 < data.byte(kMapx))
return 0;
v1 -= data.byte(kMapx);
if (v1 >= 11)
return 0;
*result = (v1 << 4) | v2;
return 1;
}
uint8 DreamGenContext::getyad(const uint8 *setData, uint8 *result) {
uint8 v0 = setData[3];
uint8 v1 = setData[4];
if (v0 < data.byte(kMapy))
return 0;
v0 -= data.byte(kMapy);
if (v0 >= 10)
return 0;
*result = (v0 << 4) | v1;
return 1;
}
void DreamGenContext::getmapad() {
ch = getmapad((const uint8 *)es.ptr(si, 5));
}
uint8 DreamGenContext::getmapad(const uint8 *setData) {
uint8 xad, yad;
if (getxad(setData, &xad) == 0)
return 0;
data.word(kObjectx) = xad;
if (getyad(setData, &yad) == 0)
return 0;
data.word(kObjecty) = yad;
return 1;
}
void DreamGenContext::calcfrframe() {
const Frame *frame = (const Frame *)segRef(data.word(kFrsegment)).ptr(data.word(kCurrentframe) * sizeof(Frame), sizeof(Frame));
data.word(kSavesource) = data.word(kFramesad) + frame->ptr();
data.byte(kSavesize+0) = frame->width;
data.byte(kSavesize+1) = frame->height;
data.word(kOffsetx) = frame->x;
data.word(kOffsety) = frame->y;
}
void DreamGenContext::finalframe() {
uint16 x, y;
finalframe(&x, &y);
di = x;
bx = y;
}
void DreamGenContext::finalframe(uint16 *x, uint16 *y) {
data.byte(kSavex) = (data.word(kObjectx) + data.word(kOffsetx)) & 0xff;
data.byte(kSavey) = (data.word(kObjecty) + data.word(kOffsety)) & 0xff;
*x = data.word(kObjectx);
*y = data.word(kObjecty);
}
void DreamGenContext::showallobs() {
data.word(kListpos) = kSetlist;
memset(segRef(data.word(kBuffers)).ptr(kSetlist, 0), 0xff, 128 * 5);
data.word(kFrsegment) = data.word(kSetframes);
data.word(kDataad) = kFramedata;
data.word(kFramesad) = kFrames;
const Frame *frames = (const Frame *)segRef(data.word(kFrsegment)).ptr(0, 0);
ObjData *setEntries = (ObjData *)segRef(data.word(kSetdat)).ptr(0, 128 * sizeof(ObjData));
for (size_t i = 0; i < 128; ++i) {
ObjData *setEntry = setEntries + i;
if (getmapad(setEntry->b58) == 0)
continue;
uint8 currentFrame = setEntry->b18[0];
data.word(kCurrentframe) = currentFrame;
if (currentFrame == 0xff)
continue;
calcfrframe();
uint16 x, y;
finalframe(&x, &y);
setEntry->b17 = setEntry->b18[0];
if ((setEntry->type == 0) && (setEntry->priority != 5) && (setEntry->priority != 6)) {
x += data.word(kMapadx);
y += data.word(kMapady);
uint8 width, height;
showframe(frames, x, y, data.word(kCurrentframe), 0, &width, &height);
} else
makebackob(setEntry);
ObjPos *objPos = (ObjPos *)segRef(data.word(kBuffers)).ptr(data.word(kListpos), sizeof(ObjPos));
objPos->xMin = data.byte(kSavex);
objPos->yMin = data.byte(kSavey);
objPos->xMax = data.byte(kSavex) + data.byte(kSavesize+0);
objPos->yMax = data.byte(kSavey) + data.byte(kSavesize+1);
objPos->index = i;
data.word(kListpos) += sizeof(ObjPos);
}
}
void DreamGenContext::getdimension()
{
uint8 mapXstart, mapYstart;
uint8 mapXsize, mapYsize;
getdimension(&mapXstart, &mapYstart, &mapXsize, &mapYsize);
cl = mapXstart;
ch = mapYstart;
dl = mapXsize;
dh = mapYsize;
}
bool DreamGenContext::addalong(const uint8 *mapFlags) {
for (size_t i = 0; i < 11; ++i) {
if (mapFlags[3 * i] != 0)
return true;
}
return false;
}
bool DreamGenContext::addlength(const uint8 *mapFlags) {
for (size_t i = 0; i < 10; ++i) {
if (mapFlags[3 * 11 * i] != 0)
return true;
}
return false;
}
void DreamGenContext::getdimension(uint8 *mapXstart, uint8 *mapYstart, uint8 *mapXsize, uint8 *mapYsize) {
const uint8 *mapFlags = segRef(data.word(kBuffers)).ptr(kMapflags, 0);
uint8 yStart = 0;
while (! addalong(mapFlags + 3 * 11 * yStart))
++yStart;
uint8 xStart = 0;
while (! addlength(mapFlags + 3 * xStart))
++xStart;
uint8 yEnd = 10;
while (! addalong(mapFlags + 3 * 11 * (yEnd - 1)))
--yEnd;
uint8 xEnd = 11;
while (! addlength(mapFlags + 3 * (xEnd - 1)))
--xEnd;
*mapXstart = xStart;
*mapYstart = yStart;
*mapXsize = xEnd - xStart;
*mapYsize = yEnd - yStart;
data.word(kMapxstart) = xStart << 4;
data.word(kMapystart) = yStart << 4;
data.byte(kMapxsize) = *mapXsize << 4;
data.byte(kMapysize) = *mapYsize << 4;
}
void DreamGenContext::calcmapad() {
uint8 mapXstart, mapYstart;
uint8 mapXsize, mapYsize;
getdimension(&mapXstart, &mapYstart, &mapXsize, &mapYsize);
data.word(kMapadx) = data.word(kMapoffsetx) - 8 * (mapXsize + 2 * mapXstart - 11);
data.word(kMapady) = data.word(kMapoffsety) - 8 * (mapYsize + 2 * mapYstart - 10);
}
} /*namespace dreamgen */
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