/**
* @brief Blits a region of this surface on a specified location of another surface.
* @param src_position the subrectangle of this surface to pick
* @param dst_surface the destination surface
* @param dst_position the destination position where the current surface will be blitted on dst
*/
void Surface::draw_region(const Rectangle &src_position, Surface& dst_surface, const Rectangle &dst_position)
{
Rectangle src_position2(src_position);
Rectangle dst_position2(dst_position);
SDL_BlitSurface(internal_surface, src_position2.get_internal_rect(),
dst_surface.internal_surface, dst_position2.get_internal_rect());
}
/**
* \brief Draws this surface on another surface.
* \param dst_surface The destination surface.
* \param dst_position Coordinates on the destination surface.
*/
void Surface::raw_draw(Surface& dst_surface, const Rectangle& dst_position) {
// Make a copy of the rectangle because SDL_BlitSurface modifies it.
Rectangle dst_position2(dst_position);
SDL_BlitSurface(internal_surface, NULL,
dst_surface.internal_surface, dst_position2.get_internal_rect());
}
/**
* \brief Draws a subrectangle of this text surface on another surface.
* \param region The subrectangle to draw in this object.
* \param dst_surface The destination surface.
* \param dst_position Coordinates on the destination surface.
*/
void TextSurface::raw_draw_region(const Rectangle& region,
Surface& dst_surface, const Rectangle& dst_position) {
if (surface != NULL) {
Rectangle dst_position2(text_position);
dst_position2.add_xy(dst_position);
surface->raw_draw_region(region, dst_surface, dst_position2);
}
}
/**
* \brief Draws a subrectangle of this object, applying dynamic effects.
* \param region The rectangle to draw in this object.
* \param dst_surface The destination surface
* \param dst_position Position on this surface
* (will be added to the position obtained by previous movements).
*/
void Drawable::draw_region(const Rectangle& region,
Surface& dst_surface, const Rectangle& dst_position) {
Rectangle dst_position2(dst_position);
dst_position2.add_xy(xy);
if (transition != NULL) {
draw_transition(*transition);
}
raw_draw_region(region, dst_surface, dst_position2);
}
/**
* \brief Draws a subrectangle of the current frame of this sprite.
* \param region The subrectangle to draw, relative to the origin point.
* It may be bigger than the frame: in this case it will be clipped.
* \param dst_surface The destination surface.
* \param dst_position Coordinates on the destination surface.
* The origin point of the sprite will appear at these coordinates.
*/
void Sprite::raw_draw_region(
const Rectangle& region,
Surface& dst_surface,
const Rectangle& dst_position) {
if (!is_animation_finished()
&& (blink_delay == 0 || blink_is_sprite_visible)) {
get_intermediate_surface().fill_with_color(Color::get_black());
const Rectangle& origin = get_origin();
current_animation->draw(
get_intermediate_surface(),
origin,
current_direction,
current_frame);
// If the region is bigger than the current frame, clip it.
// Otherwise, more than the current frame could be visible.
Rectangle src_position(region);
src_position.add_xy(origin.get_x(), origin.get_y());
const Rectangle& frame_size = get_size();
if (src_position.get_x() < 0) {
src_position.set_width(src_position.get_width() + src_position.get_x());
src_position.set_x(0);
}
if (src_position.get_x() + src_position.get_width() > frame_size.get_width()) {
src_position.set_width(frame_size.get_width() - src_position.get_x());
}
if (src_position.get_y() < 0) {
src_position.set_height(src_position.get_height() + src_position.get_y());
src_position.set_y(0);
}
if (src_position.get_y() + src_position.get_height() > frame_size.get_height()) {
src_position.set_height(frame_size.get_height() - src_position.get_y());
}
if (src_position.get_width() <= 0 || src_position.get_height() <= 0) {
// Nothing remains visible.
return;
}
// Calculate the destination coordinates.
Rectangle dst_position2(dst_position);
dst_position2.add_xy(src_position.get_x(), src_position.get_y()); // Let a space for the part outside the region.
dst_position2.add_xy(-origin.get_x(), -origin.get_y()); // Input coordinates were relative to the origin.
get_intermediate_surface().draw_region(src_position, dst_surface, dst_position2);
}
}
/**
* \brief Draws the sprite on a surface, with its current animation,
* direction and frame.
* \param dst_surface The destination surface.
* \param dst_position Coordinates on the destination surface
* (the origin will be placed at this position).
*/
void Sprite::raw_draw(
Surface& dst_surface,
const Rectangle& dst_position) {
if (!is_animation_finished()
&& (blink_delay == 0 || blink_is_sprite_visible)) {
if (intermediate_surface == NULL) {
current_animation->draw(dst_surface, dst_position,
current_direction, current_frame);
}
else {
intermediate_surface->fill_with_color(Color::get_black());
current_animation->draw(*intermediate_surface, get_origin(),
current_direction, current_frame);
Rectangle dst_position2(dst_position);
dst_position2.add_xy(-get_origin().get_x(), -get_origin().get_y());
intermediate_surface->draw_region(get_size(), dst_surface, dst_position2);
}
}
}
/**
* @brief Blits a subarea of this surface on a specified location of another surface.
* @param src_position the subrectangle of this surface to pick
* @param dst the destination surface
* @param dst_position the destination position where the current surface will be blitted on dst
*/
void Surface::blit(const Rectangle &src_position, Surface *dst, const Rectangle &dst_position) {
Rectangle src_position2(src_position);
Rectangle dst_position2(dst_position);
SDL_BlitSurface(internal_surface, src_position2.get_internal_rect(), dst->internal_surface, dst_position2.get_internal_rect());
}
/**
* @brief Blits this whole surface on a specified location of another surface.
* @param dst the destination surface
* @param dst_position the destination position where the current surface will be blitted on dst
*/
void Surface::blit(Surface *dst, const Rectangle &dst_position) {
Rectangle dst_position2(dst_position);
SDL_BlitSurface(internal_surface, NULL, dst->internal_surface, dst_position2.get_internal_rect());
}
