/**
* @brief This function is called to blit the next frame of an anim instance to the screen.
* This is normally called by the anim_render_all() function.
*
* @param instance Pointer to animation instance
* @param frametime Time elapsed since last call, in seconds
*/
int anim_show_next_frame(anim_instance *instance, float frametime)
{
int bitmap_id, bitmap_flags=0, new_frame_num, frame_diff=0, i, n_frames=0,frame_save;
float percent_through, time;
vertex image_vertex;
int aabitmap = 0;
int bpp = 16;
Assert( instance != NULL );
instance->time_elapsed += frametime;
// Advance to the next frame, if we determine enough time has elapsed.
if(instance->direction == ANIM_DIRECT_FORWARD)
n_frames = instance->stop_at - instance->start_at + 1;
else if(instance->direction == ANIM_DIRECT_REVERSE)
n_frames = instance->start_at - instance->stop_at + 1;
time = n_frames / i2fl(instance->parent->fps);
percent_through = instance->time_elapsed / time;
if(instance->direction == ANIM_DIRECT_FORWARD)
new_frame_num = instance->start_at - 1 + fl2i(percent_through * n_frames + 0.5f);
else
new_frame_num = instance->start_at - 1 - fl2i(percent_through * n_frames + 0.5f);
frame_save = instance->frame_num;
// If framerate independent, use the new_frame_num... unless instance->skip_frames is
// FALSE, then only advance a maximum of one frame (this is needed since some big animations
// should just play slower rather than taking the hit of decompressing multiple frames and
// creating an even greater slowdown
if (instance->framerate_independent) {
if(instance->direction == ANIM_DIRECT_FORWARD){
if ( new_frame_num > instance->last_frame_num) {
if ( instance->skip_frames )
instance->frame_num = new_frame_num;
else
instance->frame_num++;
}
} else if(instance->direction == ANIM_DIRECT_REVERSE){
if( new_frame_num < instance->last_frame_num) {
if ( instance->skip_frames )
instance->frame_num = new_frame_num;
else
instance->frame_num--;
}
}
}
else {
if(instance->direction == ANIM_DIRECT_FORWARD){
if ( new_frame_num > instance->last_frame_num) {
instance->frame_num++;
}
} else if(instance->direction == ANIM_DIRECT_REVERSE){
if ( new_frame_num < instance->last_frame_num) {
instance->frame_num--;
}
}
}
if(instance->direction == ANIM_DIRECT_FORWARD){
if ( instance->frame_num < instance->start_at ) {
instance->frame_num = instance->start_at;
}
} else if(instance->direction == ANIM_DIRECT_REVERSE){
if ( instance->frame_num > instance->start_at ) {
instance->frame_num = instance->start_at;
}
}
if ( instance->stop_now == TRUE ) {
return -1;
}
// If past the last frame, clamp to the last frame and then set the stop_now flag in the
// anim instance. The next iteration, the animation will stop.
if(instance->direction == ANIM_DIRECT_FORWARD){
if (instance->frame_num >= instance->stop_at ) {
if (instance->looped) { // looped animations
instance->frame_num = instance->stop_at;
instance->time_elapsed = 0.0f;
} else if(instance->ping_pong) { // pingponged animations
instance->frame_num = instance->stop_at;
anim_reverse_direction(instance);
} else { // one-shot animations
instance->frame_num = instance->stop_at;
instance->last_frame_num = instance->frame_num;
instance->stop_now = TRUE;
}
}
} else if(instance->direction == ANIM_DIRECT_REVERSE){
if (instance->frame_num <= instance->stop_at ) {
if (instance->looped) { // looped animations
instance->frame_num = instance->stop_at;
instance->time_elapsed = 0.0f;
} else if(instance->ping_pong) { // pingponged animations
instance->frame_num = instance->stop_at;
anim_reverse_direction(instance);
} else { // one-shot animations
instance->frame_num = instance->stop_at+1;
instance->last_frame_num = instance->frame_num;
instance->stop_now = TRUE;
}
}
}
if(instance->direction == ANIM_DIRECT_FORWARD){
if( instance->last_frame_num >= instance->start_at ) {
frame_diff = instance->frame_num - instance->last_frame_num;
} else {
frame_diff = 1;
}
} else if(instance->direction == ANIM_DIRECT_REVERSE){
if( instance->last_frame_num <= instance->start_at ) {
frame_diff = instance->last_frame_num - instance->frame_num;
} else {
frame_diff = 1;
}
}
Assert(frame_diff >= 0);
Assert( instance->frame_num >= 0 && instance->frame_num < instance->parent->total_frames );
// if the anim is paused, ignore all the above changes and still display this frame
if(instance->paused || Anim_paused){
instance->frame_num = frame_save;
instance->time_elapsed -= frametime;
frame_diff = 0;
}
if (instance->parent->flags & ANF_XPARENT){
bitmap_flags = 0;
}
bpp = 16;
if(instance->aa_color != NULL){
bitmap_flags |= BMP_AABITMAP;
aabitmap = 1;
bpp = 8;
}
if ( frame_diff > 0 ) {
instance->last_frame_num = instance->frame_num;
t1 = timer_get_fixed_seconds();
for ( i = 0; i < frame_diff; i++ ) {
anim_check_for_palette_change(instance);
// if we're playing backwards, every frame must be a keyframe and we set the data ptr here
if(instance->direction == ANIM_DIRECT_REVERSE){
if ( anim_instance_is_streamed(instance) ) {
instance->file_offset = instance->parent->file_offset + instance->parent->keys[instance->frame_num-1].offset;
} else {
instance->data = instance->parent->data + instance->parent->keys[instance->frame_num-1].offset;
}
}
ubyte *temp = NULL;
int temp_file_offset = -1;
// if we're using bitmap polys
BM_SELECT_TEX_FORMAT();
if ( anim_instance_is_streamed(instance) ) {
if ( instance->xlate_pal ){
temp_file_offset = unpack_frame_from_file(instance, instance->frame, instance->parent->width*instance->parent->height, instance->parent->palette_translation, aabitmap, bpp);
} else {
temp_file_offset = unpack_frame_from_file(instance, instance->frame, instance->parent->width*instance->parent->height, NULL, aabitmap, bpp);
}
} else {
if ( instance->xlate_pal ){
temp = unpack_frame(instance, instance->data, instance->frame, instance->parent->width*instance->parent->height, instance->parent->palette_translation, aabitmap, bpp);
} else {
temp = unpack_frame(instance, instance->data, instance->frame, instance->parent->width*instance->parent->height, NULL, aabitmap, bpp);
}
}
// always go back to screen format
BM_SELECT_SCREEN_FORMAT();
// see if we had an error during decode (corrupted anim stream)
if ( (temp == NULL) && (temp_file_offset < 0) ) {
mprintf(("ANI: Fatal ERROR at frame %i!! Aborting playback of \"%s\"...\n", instance->frame_num, instance->parent->name));
// return -1 to end all playing of this anim instanc
return -1;
}
if(instance->direction == ANIM_DIRECT_FORWARD){
if ( anim_instance_is_streamed(instance) ) {
instance->file_offset = temp_file_offset;
} else {
instance->data = temp;
}
}
}
t2 = timer_get_fixed_seconds();
}
else {
t2=t1=0;
}
// this only happens when the anim is being looped, we need to reset the last_frame_num
if ( (instance->time_elapsed == 0) && (instance->looped) ) {
instance->last_frame_num = -1;
instance->frame_num = -1;
instance->data = instance->parent->data;
instance->file_offset = instance->parent->file_offset;
instance->loop_count++;
}
t1 = timer_get_fixed_seconds();
if ( frame_diff == 0 && instance->last_bitmap != -1 ) {
bitmap_id = instance->last_bitmap;
}
else {
if ( instance->last_bitmap != -1 ){
bm_release(instance->last_bitmap);
}
bitmap_id = bm_create(bpp, instance->parent->width, instance->parent->height, instance->frame, bitmap_flags);
}
if ( bitmap_id == -1 ) {
// anim has finsished playing, free the instance frame data
anim_release_render_instance(instance);
return -1;
// NOTE: there is no need to free the instance, since it was pre-allocated as
// part of the anim_free_list
}
else {
gr_set_bitmap(bitmap_id);
// determine x,y to display the bitmap at
if ( instance->world_pos == NULL ) {
int old_max_w_unscaled = gr_screen.max_w_unscaled;
int old_max_h_unscaled = gr_screen.max_h_unscaled;
int old_max_w_unscaled_zoomed = gr_screen.max_w_unscaled_zoomed;
int old_max_h_unscaled_zoomed = gr_screen.max_h_unscaled_zoomed;
gr_set_screen_scale(instance->base_w, instance->base_h);
gr_set_clip(0, 0, instance->base_w, instance->base_h, GR_RESIZE_MENU);
if ( instance->aa_color == NULL ) {
gr_bitmap(instance->x, instance->y, GR_RESIZE_MENU_NO_OFFSET);
}
else {
gr_set_color_fast( (color*)instance->aa_color );
gr_aabitmap(instance->x, instance->y, GR_RESIZE_MENU_NO_OFFSET);
}
gr_set_screen_scale(old_max_w_unscaled, old_max_h_unscaled, old_max_w_unscaled_zoomed, old_max_h_unscaled_zoomed);
gr_reset_clip();
}
else {
g3_rotate_vertex(&image_vertex,instance->world_pos);
Assert(instance->radius != 0.0f);
//g3_draw_bitmap(&image_vertex, 0, instance->radius*1.5f, TMAP_FLAG_TEXTURED | TMAP_HTL_2D);
material mat_params;
material_set_unlit(&mat_params, bitmap_id, 1.0f, false, false);
g3_render_rect_screen_aligned_2d(&mat_params, &image_vertex, 0, instance->radius*1.5f);
}
instance->last_bitmap = bitmap_id;
}
t2 = timer_get_fixed_seconds();
return 0;
}
void generic_render_ani_stream(generic_anim *ga)
{
int i;
int bpp = ANI_BPP_CHECK;
if(ga->use_hud_color)
bpp = 8;
#ifdef TIMER
int start_time = timer_get_fixed_seconds();
#endif
if(ga->current_frame == ga->previous_frame)
return;
#ifdef TIMER
mprintf(("=========================\n"));
mprintf(("frame: %d\n", ga->current_frame));
#endif
anim_check_for_palette_change(ga->ani.instance);
// if we're using bitmap polys
BM_SELECT_TEX_FORMAT();
if(ga->direction & GENERIC_ANIM_DIRECTION_BACKWARDS) {
//grab the keyframe - every frame is a keyframe for ANI
if(ga->ani.animation->flags & ANF_STREAMED) {
ga->ani.instance->file_offset = ga->ani.animation->file_offset + ga->ani.animation->keys[ga->current_frame].offset;
} else {
ga->ani.instance->data = ga->ani.animation->data + ga->ani.animation->keys[ga->current_frame].offset;
}
if(ga->ani.animation->flags & ANF_STREAMED) {
ga->ani.instance->file_offset = unpack_frame_from_file(ga->ani.instance, ga->buffer, ga->width * ga->height, (ga->ani.instance->xlate_pal) ? ga->ani.animation->palette_translation : NULL, (bpp==8)?1:0, bpp);
}
else {
ga->ani.instance->data = unpack_frame(ga->ani.instance, ga->ani.instance->data, ga->buffer, ga->width * ga->height, (ga->ani.instance->xlate_pal) ? ga->ani.animation->palette_translation : NULL, (bpp==8)?1:0, bpp);
}
}
else {
//looping back
if((ga->current_frame == 0) || (ga->current_frame < ga->previous_frame)) {
//go back to keyframe if there is one
if(ga->keyframe && (ga->current_frame > 0)) {
if(ga->ani.animation->flags & ANF_STREAMED) {
ga->ani.instance->file_offset = ga->ani.animation->file_offset + ga->keyoffset;
} else {
ga->ani.instance->data = ga->ani.animation->data + ga->keyoffset;
}
ga->previous_frame = ga->keyframe - 1;
}
//go back to the start
else {
ga->ani.instance->file_offset = ga->ani.animation->file_offset;
ga->ani.instance->data = ga->ani.animation->data;
ga->previous_frame = -1;
}
}
#ifdef TIMER
mprintf(("proc: %d\n", timer_get_fixed_seconds() - start_time));
mprintf(("previous frame: %d\n", ga->previous_frame));
#endif
for(i = ga->previous_frame + 1; i <= ga->current_frame; i++) {
if(ga->ani.animation->flags & ANF_STREAMED) {
ga->ani.instance->file_offset = unpack_frame_from_file(ga->ani.instance, ga->buffer, ga->width * ga->height, (ga->ani.instance->xlate_pal) ? ga->ani.animation->palette_translation : NULL, (bpp==8)?1:0, bpp);
}
else {
ga->ani.instance->data = unpack_frame(ga->ani.instance, ga->ani.instance->data, ga->buffer, ga->width * ga->height, (ga->ani.instance->xlate_pal) ? ga->ani.animation->palette_translation : NULL, (bpp==8)?1:0, bpp);
}
}
}
// always go back to screen format
BM_SELECT_SCREEN_FORMAT();
//we need to use this because performance is worse if we flush the gfx card buffer
gr_update_texture(ga->bitmap_id, bpp, ga->buffer, ga->width, ga->height);
//in case we want to check that the frame is actually changing
//mprintf(("frame crc = %08X\n", cf_add_chksum_long(0, ga->buffer, ga->width * ga->height * (bpp >> 3))));
ga->ani.instance->last_bitmap = ga->bitmap_id;
#ifdef TIMER
mprintf(("end: %d\n", timer_get_fixed_seconds() - start_time));
mprintf(("=========================\n"));
#endif
}
