diff options
Diffstat (limited to 'sword1/screen.cpp')
| -rw-r--r-- | sword1/screen.cpp | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/sword1/screen.cpp b/sword1/screen.cpp index 80b61dc5ce..7d7f08a6eb 100644 --- a/sword1/screen.cpp +++ b/sword1/screen.cpp @@ -441,10 +441,21 @@ void SwordScreen::blitBlockClear(uint16 x, uint16 y, uint8 *data) { void SwordScreen::renderParallax(uint8 *data) { ParallaxHeader *header = (ParallaxHeader*)data; assert((FROM_LE_16(header->sizeX) >= SCREEN_WIDTH) && (FROM_LE_16(header->sizeY) >= SCREEN_DEPTH)); - double scrlfx = FROM_LE_16(header->sizeX) / ((double)_scrnSizeX ); - double scrlfy = FROM_LE_16(header->sizeY) / ((double)_scrnSizeY ); - uint16 scrlX = (uint16)(SwordLogic::_scriptVars[SCROLL_OFFSET_X] * scrlfx); - uint16 scrlY = (uint16)(SwordLogic::_scriptVars[SCROLL_OFFSET_Y] * scrlfy); + + double scrlfx, scrlfy; + uint16 scrlX, scrlY; + + if (_scrnSizeX != SCREEN_WIDTH) { + scrlfx = (FROM_LE_16(header->sizeX) - SCREEN_WIDTH) / ((double)(_scrnSizeX - SCREEN_WIDTH)); + scrlX = (uint16)(SwordLogic::_scriptVars[SCROLL_OFFSET_X] * scrlfx); + } else + scrlX = 0; + + if (_scrnSizeY != SCREEN_DEPTH) { + scrlfy = (FROM_LE_16(header->sizeY) - SCREEN_DEPTH) / ((double)(_scrnSizeY - SCREEN_DEPTH)); + scrlY = (uint16)(SwordLogic::_scriptVars[SCROLL_OFFSET_Y] * scrlfy); + } else + scrlY = 0; for (uint16 cnty = 0; cnty < SCREEN_DEPTH; cnty++) { uint8 *src = data + READ_LE_UINT32(header->lineIndexes + cnty + scrlY); |