act->y_hotspot = 0;
act->fps = 10;
- act->animation_loops = 0;
+ animation_loops = -1;
last_tick = 0;
}
void
Sprite::start_animation(int loops)
{
-action->animation_loops = loops;
+animation_loops = loops;
reset();
}
{
frame = 0;
last_tick = SDL_GetTicks();
+animation_reversed = false;
}
bool
Sprite::check_animation()
{
-return action->animation_loops;
+return animation_loops;
+}
+
+void
+Sprite::reverse_animation()
+{
+animation_reversed = !animation_reversed;
+
+if(animation_reversed)
+ frame = get_frames()-1;
+else
+ frame = 0;
}
void
Sprite::update()
{
-frame += (action->fps/1000) * (SDL_GetTicks() - last_tick);
+if(animation_loops == 0)
+ return;
+
+float frame_inc = (action->fps/1000.0) * (SDL_GetTicks() - last_tick);
+
+if(animation_reversed)
+ frame -= frame_inc;
+else
+ frame += frame_inc;
+
last_tick = SDL_GetTicks();
-if((unsigned int)frame >= action->surfaces.size())
+if(animation_reversed)
{
- frame = 0;
- if(action->animation_loops > 0)
- action->animation_loops--;
+ float expedient = frame - 0;
+ if(expedient < 0)
+ {
+ frame = get_frames()-1;
+ if(animation_loops > 0)
+ animation_loops--;
+
+ if(expedient > -get_frames())
+ frame -= expedient;
+ }
+ }
+else
+ {
+ float expedient = frame - action->surfaces.size();
+ if(expedient >= 0)
+ {
+ frame = 0;
+ if(animation_loops > 0)
+ animation_loops--;
+
+ if(expedient < get_frames())
+ frame += expedient;
+ }
}
}
{
update();
- context.draw_surface(action->surfaces[(int)frame],
- pos - Vector(action->x_hotspot, action->y_hotspot), layer, drawing_effect);
+ if((int)frame >= get_frames() || (int)frame < 0)
+ std::cerr << "Warning: frame higher than total frames or lower than 0!\n";
+ else
+ context.draw_surface(action->surfaces[(int)frame],
+ pos - Vector(action->x_hotspot, action->y_hotspot), layer, drawing_effect);
}
#if 0
int
Sprite::get_width()
{
- return action->surfaces[get_current_frame()]->w;
+ return action->surfaces[get_frame()]->w;
}
int
Sprite::get_height()
{
- return action->surfaces[get_current_frame()]->h;
+ return action->surfaces[get_frame()]->h;
}
/* EOF */