/**
* \brief Returns the rectangle representing the specified frame on the source image.
* \param frame a frame number
* \return the rectangle of this frame
*/
const Rectangle& SpriteAnimationDirection::get_frame(int frame) const {
if (frame < 0 || frame >= get_nb_frames()) {
Debug::die(StringConcat() << "Invalid frame " << frame
<< ": this direction has " << get_nb_frames() << " frames");
}
return frames[frame];
}
/**
* \brief Returns the rectangle representing the specified frame on the source image.
* \param frame a frame number
* \return the rectangle of this frame
*/
const Rectangle& SpriteAnimationDirection::get_frame(int frame) const {
if (frame < 0 || frame >= get_nb_frames()) {
std::ostringstream oss;
oss << "Invalid frame " << frame
<< ": this direction has " << get_nb_frames() << " frames";
Debug::die(oss.str());
}
return frames[frame];
}
/**
* \brief Calculates the bit fields representing the non-transparent pixels
* of the images in this direction.
*
* This method has to be called if you want a sprite having this animations
* to be able to detect pixel-perfect collisions.
* If the pixel-perfect collisions are already enabled, this function does nothing.
*
* \param src_image the surface containing the animations
*/
void SpriteAnimationDirection::enable_pixel_collisions(Surface& src_image) {
if (!are_pixel_collisions_enabled()) {
for (int i = 0; i < get_nb_frames(); i++) {
pixel_bits.emplace_back(src_image, frames[i]);
}
}
}
/**
* \brief Calculates the bit fields representing the non-transparent pixels
* of the images in this direction.
*
* This method has to be called if you want a sprite having this animations
* to be able to detect pixel-perfect collisions.
* If the pixel-perfect collisions are already enabled, this function does nothing.
*
* \param src_image the surface containing the animations
*/
void SpriteAnimationDirection::enable_pixel_collisions(Surface* src_image) {
if (!are_pixel_collisions_enabled()) {
for (int i = 0; i < get_nb_frames(); i++) {
pixel_bits.push_back(new PixelBits(*src_image, frames[i]));
}
}
}
/**
* \brief Returns the size of a frame.
* \return The size of a frame.
*/
Size SpriteAnimationDirection::get_size() const {
Debug::check_assertion(get_nb_frames() > 0, "Invalid number of frames");
return { frames[0].get_width(), frames[0].get_height() };
}
/**
* \brief Checks whether the frame has to be changed.
*
* If the frame changes, next_frame_date is updated.
*/
void Sprite::update() {
Drawable::update();
if (suspended || paused) {
return;
}
frame_changed = false;
uint32_t now = System::now();
// update the current frame
if (synchronize_to == NULL
|| current_animation_name != synchronize_to->get_current_animation()
|| synchronize_to->get_current_direction() > get_nb_directions()
|| synchronize_to->get_current_frame() > get_nb_frames()) {
// update the frames normally (with the time)
int next_frame;
while (!finished && !suspended && !paused && get_frame_delay() > 0
&& now >= next_frame_date) {
// we get the next frame
next_frame = get_next_frame();
// test whether the animation is finished
if (next_frame == -1) {
finished = true;
if (lua_context != NULL) {
lua_context->sprite_on_animation_finished(*this, current_animation_name);
}
}
else {
current_frame = next_frame;
next_frame_date += get_frame_delay();
}
set_frame_changed(true);
if (lua_context != NULL) {
lua_context->sprite_on_frame_changed(*this, current_animation_name, current_frame);
}
}
}
else {
// take the same frame as the other sprite
if (synchronize_to->is_animation_finished()) {
finished = true;
if (lua_context != NULL) {
lua_context->sprite_on_animation_finished(*this, current_animation_name);
}
}
else {
int other_frame = synchronize_to->get_current_frame();
if (other_frame != current_frame) {
current_frame = other_frame;
next_frame_date = now + get_frame_delay();
set_frame_changed(true);
if (lua_context != NULL) {
lua_context->sprite_on_frame_changed(*this, current_animation_name, current_frame);
}
}
}
}
// update the special effects
if (is_blinking()) {
// the sprite is blinking
while (now >= blink_next_change_date) {
blink_is_sprite_visible = !blink_is_sprite_visible;
blink_next_change_date += blink_delay;
}
}
}
/**
* \brief Returns true if the last frame is reached.
* \return true if the last frame is reached
*/
bool Sprite::is_last_frame_reached() const {
return get_current_frame() == get_nb_frames() - 1;
}
