libretro/scummvm
1
0
Fork 0
mirror of https://github.com/libretro/scummvm.git synced 2025-01-27 13:42:02 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

STARTREK: Sprite layering

Browse Source
This commit is contained in:
Matthew Stewart 2018-05-14 14:02:28 -04:00 committed by Eugene Sandulenko
parent 65d24b0451
commit 1110fee2e4
1 changed files with 17 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
engines/startrek/graphics.cpp
View File

@ -22,6 +22,7 @@
#include "startrek/common.h"
#include "startrek/graphics.h"
#include "common/algorithm.h"
#include "common/config-manager.h"
#include "common/events.h"
#include "common/rendermode.h"
@ -336,13 +337,28 @@ void Graphics::drawSprite(const Sprite &sprite, const Common::Rect &rect) {
_vm->_system->unlockScreen();
}
/**
* Compare 2 sprites for the purpose of sorting them by layer before drawing.
* FIXME: Original returned an int, not a bool. This may affect the stability of the sort...
*/
bool compareSpritesByLayer(Sprite *s1, Sprite *s2) {
if (s1->drawPriority != s2->drawPriority)
return s1->drawPriority < s2->drawPriority;
if (s1->field6 != s2->field6)
return s1->field6 < s2->field6;
if (s1->pos.y != s2->pos.y)
return s1->pos.y < s2->pos.y;
return s1->pos.x < s2->pos.x;
}
void Graphics::drawAllSprites() {
// TODO: different video modes?
if (_numSprites == 0)
return;
// TODO: calculateSpriteDrawPriority()
// Sort sprites by layer
Common::sort(_sprites, _sprites + _numSprites, &compareSpritesByLayer);
// Update sprite rectangles
for (int i=0; i<_numSprites; i++) {