diff options
Diffstat (limited to 'viewport.c')
| -rw-r--r-- | viewport.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/viewport.c b/viewport.c index feed484fd..d413dec2a 100644 --- a/viewport.c +++ b/viewport.c @@ -23,6 +23,12 @@ #define VIEWPORT_DRAW_MEM (65536 * 2) +/* viewport.c */ +// XXX - maximum viewports is maximum windows - 2 (main toolbar + status bar) +static ViewPort _viewports[25 - 2]; +static uint32 _active_viewports; ///< bitmasked variable where each bit signifies if a viewport is in use or not +assert_compile(lengthof(_viewports) < sizeof(_active_viewports) * 8); + static bool _added_tile_sprite; static bool _offset_ground_sprites; @@ -119,6 +125,18 @@ static Point MapXYZToViewport(const ViewPort *vp, uint x, uint y, uint z) return p; } +void InitViewports(void) { + memset(_viewports, 0, sizeof(_viewports)); + _active_viewports = 0; +} + +void DeleteWindowViewport(Window *w) +{ + CLRBIT(_active_viewports, w->viewport - _viewports); + w->viewport->width = 0; + w->viewport = NULL; +} + void AssignWindowViewport(Window *w, int x, int y, int width, int height, uint32 follow_flags, byte zoom) { @@ -126,11 +144,11 @@ void AssignWindowViewport(Window *w, int x, int y, Point pt; uint32 bit; - for (vp = _viewports, bit = 1; ; vp++, bit <<= 1) { + for (vp = _viewports, bit = 0; ; vp++, bit++) { assert(vp != endof(_viewports)); if (vp->width == 0) break; } - _active_viewports |= bit; + SETBIT(_active_viewports, bit); vp->left = x + w->left; vp->top = y + w->top; |