next_animation.c

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/*****************************************************************************
 * ugBASIC - an isomorphic BASIC language compiler for retrocomputers        *
 *****************************************************************************
 * Copyright 2021-2026 Marco Spedaletti (asimov@mclink.it)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
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/****************************************************************************
 * INCLUDE SECTION 
 ****************************************************************************/
 
#include "../../ugbc.h"
 
/****************************************************************************
 * CODE SECTION 
 ****************************************************************************/

/* <usermanual>
@keyword NEXT ANIMATION
 
@english
 
This command can be used to stop the execution of the central part of an animation, 
and therefore go to the possible "ease out" and execute the next animation, if present.
 
@italian
 
Questo comando può essere utilizzato per interrompere l'esecuzione della parte centrale 
di una animazione, e portarsi quindi nell'eventuale "ease out" nonché eseguire l'animazione 
successiva, se presente.
 
@syntax NEXT ANIMATION prefix
 
@example NEXT ANIMATION airplane
 
</usermanual> */
void next_animation( Environment * _environment, char * _prefix ) {
 
    MAKE_LABEL
 
    char prefixAnimation[MAX_TEMPORARY_STORAGE]; sprintf( prefixAnimation, "%sAnimation", _prefix );
    char prefixNext[MAX_TEMPORARY_STORAGE]; sprintf( prefixNext, "%sNext", _prefix );
 
    if ( ! variable_exists( _environment, prefixAnimation ) ) {
        CRITICAL_CANNOT_USE_NEXT_ANIMATION_WITHOUT_ANIMATION(_prefix);
    }
 
    if ( ! variable_exists( _environment, prefixNext ) ) {
        CRITICAL_CANNOT_USE_NEXT_ANIMATION_WITHOUT_ANIMATION(_prefix);
    }
 
    Variable * prefixAnimationVar = variable_retrieve( _environment, prefixAnimation );
 
    if ( prefixAnimationVar->type != VT_THREAD ) {
        CRITICAL_CANNOT_USE_NEXT_ANIMATION_WITHOUT_ANIMATION(_prefix);
    }
 
    char doneLabel[MAX_TEMPORARY_STORAGE]; sprintf( doneLabel, "%sDone", label );
 
    Variable * prefixNextVar = variable_retrieve( _environment, prefixNext );
 
    cpu_or_8bit_const( _environment, prefixNextVar->realName, 0x80, prefixNextVar->realName );
 
    begin_loop( _environment, 1 );
        variable_compare_and_branch_const( _environment, 
            variable_and_const( _environment, prefixNextVar->name, 0x02)->name, 0x02, doneLabel, 1 );
        run_parallel( _environment );
    end_loop( _environment, 1 );
 
    cpu_label( _environment, doneLabel );
    
}