/**
** Draw (sprite) cursor when visible, defined by
** OldCursorW (!=0),..
** Pre: for this to work OldCursorW should be 0 upfront
**
** @param type Cursor-type of the cursor to draw.
** @param x Screen x pixel position.
** @param y Screen y pixel position.
** @param frame Animation frame # of the cursor.
*/
local void DrawCursor(const CursorType* type,int x,int y,int frame)
{
int size;
int w;
int h;
int spritex;
int spritey;
//
// Save cursor position and size, for faster cursor redraw.
//
spritex=(x-=type->HotX);
spritey=(y-=type->HotY);
w=VideoGraphicWidth(type->Sprite);
h=VideoGraphicHeight(type->Sprite);
//Reserve enough memory for background of sprite (also for future calls)
size=w*h*MemSize;
if( OldCursorSize<size ) {
if( OldCursorImage ) {
OldCursorImage=realloc(OldCursorImage,size);
} else {
OldCursorImage=malloc(size);
}
OldCursorSize=size;
}
//Save (seen) area behind sprite
CLIP_RECTANGLE(x,y,w,h);
SaveCursorBackground(OldCursorX=x,OldCursorY=y,OldCursorW=w,OldCursorH=h);
//Draw sprite (using its own clipping) FIXME: prevent clipping twice
VideoDrawClip(type->Sprite,frame,spritex,spritey);
OldCursorInvalidate=1;
}
/**
** Draw only fog of war
**
** @param x X position into video memory
** @param y Y position into video memory
*/
void VideoDrawOnlyFog(int x, int y)
{
#if defined(USE_OPENGL) || defined(USE_GLES)
if (UseOpenGL) {
Video.FillRectangleClip(Video.MapRGBA(0, 0, 0, 0, FogOfWarOpacity),
x, y, PixelTileSize.x, PixelTileSize.y);
} else
#endif
{
int oldx;
int oldy;
SDL_Rect srect;
SDL_Rect drect;
srect.x = 0;
srect.y = 0;
srect.w = OnlyFogSurface->w;
srect.h = OnlyFogSurface->h;
oldx = x;
oldy = y;
CLIP_RECTANGLE(x, y, srect.w, srect.h);
srect.x += x - oldx;
srect.y += y - oldy;
drect.x = x;
drect.y = y;
SDL_BlitSurface(OnlyFogSurface, &srect, TheScreen, &drect);
}
}
