public void tilemap_draw_instanceC4(RECT cliprect, int xpos, int ypos)
{
int mincol, maxcol;
int x1, y1, x2, y2;
int y, nexty;
int offsety1, offsety2;
int i;
x1 = Math.Max(xpos, cliprect.min_x);
x2 = Math.Min(xpos + width, cliprect.max_x + 1);
y1 = Math.Max(ypos, cliprect.min_y);
y2 = Math.Min(ypos + height, cliprect.max_y + 1);
if (x1 >= x2 || y1 >= y2)
{
return;
}
x1 -= xpos;
y1 -= ypos;
x2 -= xpos;
y2 -= ypos;
offsety1 = y1;
mincol = x1 / tilewidth;
maxcol = (x2 + tilewidth - 1) / tilewidth;
y = y1;
nexty = tileheight * (y1 / tileheight) + tileheight;
nexty = Math.Min(nexty, y2);
for (; ;)
{
int row = y / tileheight;
trans_t prev_trans = trans_t.WHOLLY_TRANSPARENT;
trans_t cur_trans;
int x_start = x1;
int column;
for (column = mincol; column <= maxcol; column++)
{
int x_end;
if (column == maxcol)
{
cur_trans = trans_t.WHOLLY_TRANSPARENT;
}
else
{
if ((tileflags[row, column] & 0x1f) != 0)
{
cur_trans = trans_t.MASKED;
}
else
{
cur_trans = ((flagsmap[offsety1, column *tilewidth] & 0x1f) == 0x10) ? trans_t.WHOLLY_OPAQUE : trans_t.WHOLLY_TRANSPARENT;
}
}
if (cur_trans == prev_trans)
{
continue;
}
x_end = column * tilewidth;
x_end = Math.Max(x_end, x1);
x_end = Math.Min(x_end, x2);
if (prev_trans != trans_t.WHOLLY_TRANSPARENT)
{
int cury;
offsety2 = offsety1;
if (prev_trans == trans_t.WHOLLY_OPAQUE)
{
for (cury = y; cury < nexty; cury++)
{
Array.Copy(Tilemap.bb01, 0, Tilemap.priority_bitmap, (offsety2 + ypos) * 0x200 + xpos + x_start, x_end - x_start);
offsety2++;
}
}
else if (prev_trans == trans_t.MASKED)
{
for (cury = y; cury < nexty; cury++)
{
for (i = xpos + x_start; i < xpos + x_end; i++)
{
if ((flagsmap[offsety2, i - xpos] & 0x1f) == 0x10)
{
Tilemap.priority_bitmap[offsety2 + ypos, i] = 0x01;
}
}
offsety2++;
}
}
}
x_start = x_end;
prev_trans = cur_trans;
}
if (nexty == y2)
{
break;
}
offsety1 += (nexty - y);
y = nexty;
nexty += tileheight;
nexty = Math.Min(nexty, y2);
}
}
public void tilemap_draw_instancePgmbg(RECT cliprect, int xpos, int ypos)
{
int mincol, maxcol;
int x1, y1, x2, y2;
int y, nexty;
int offsety1, offsety2;
int i;
x1 = Math.Max(xpos, cliprect.min_x);
x2 = Math.Min(xpos + width, cliprect.max_x + 1);
y1 = Math.Max(ypos, cliprect.min_y);
y2 = Math.Min(ypos + height, cliprect.max_y + 1);
if (x1 >= x2 || y1 >= y2)
{
return;
}
x1 -= xpos;
y1 -= ypos;
x2 -= xpos;
y2 -= ypos;
offsety1 = y1;
mincol = x1 / tilewidth;
maxcol = (x2 + tilewidth - 1) / tilewidth;
y = y1;
nexty = tileheight * (y1 / tileheight) + tileheight;
nexty = Math.Min(nexty, y2);
for (; ;)
{
int row = y / tileheight;
trans_t prev_trans = trans_t.WHOLLY_TRANSPARENT;
trans_t cur_trans;
int x_start = x1;
int column;
for (column = mincol; column <= maxcol; column++)
{
int x_end;
if (column == maxcol)
{
cur_trans = trans_t.WHOLLY_TRANSPARENT;
}
else
{
if (tileflags[row, column] == Tilemap.TILE_FLAG_DIRTY)
{
tile_updatePgmbg(column, row);
}
if ((tileflags[row, column] & 0x1f) != 0)
{
cur_trans = trans_t.MASKED;
}
else
{
cur_trans = ((flagsmap[offsety1, column *tilewidth] & 0x1f) == 0x10) ? trans_t.WHOLLY_OPAQUE : trans_t.WHOLLY_TRANSPARENT;
}
}
if (cur_trans == prev_trans)
{
continue;
}
x_end = column * tilewidth;
x_end = Math.Max(x_end, x1);
x_end = Math.Min(x_end, x2);
if (prev_trans != trans_t.WHOLLY_TRANSPARENT)
{
int cury;
offsety2 = offsety1;
if (prev_trans == trans_t.WHOLLY_OPAQUE)
{
for (cury = y; cury < nexty; cury++)
{
for (i = xpos + x_start; i < xpos + x_end; i++)
{
Video.bitmapbasePGM[Video.curbitmap][(offsety2 + ypos) * 0x200 + i] = (ushort)(pixmap[offsety2 * 0x800 + i - xpos] + palette_offset);
Tilemap.priority_bitmap[offsety2 + ypos, i] = priority;
}
offsety2++;
}
}
else if (prev_trans == trans_t.MASKED)
{
for (cury = y; cury < nexty; cury++)
{
for (i = xpos + x_start; i < xpos + x_end; i++)
{
if ((flagsmap[offsety2, i - xpos] & 0x1f) == 0x10)
{
Video.bitmapbasePGM[Video.curbitmap][(offsety2 + ypos) * 0x200 + i] = (ushort)(pixmap[offsety2 * 0x800 + i - xpos] + palette_offset);
Tilemap.priority_bitmap[offsety2 + ypos, i] = priority;
}
}
offsety2++;
}
}
}
x_start = x_end;
prev_trans = cur_trans;
}
if (nexty == y2)
{
break;
}
offsety1 += (nexty - y);
y = nexty;
nexty += tileheight;
nexty = Math.Min(nexty, y2);
}
}