tile_get_first.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");
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/****************************************************************************
 * INCLUDE SECTION 
 ****************************************************************************/
 
#include "../../ugbc.h"
 
/****************************************************************************
 * CODE SECTION 
 ****************************************************************************/

/* <usermanual>
@keyword TILE FIRST
 
@target cpc
</usermanual> */
Variable * tile_get_first( Environment * _environment, char * _tile ) {
 
    Variable * tile = variable_retrieve( _environment, _tile );
    Variable * result = variable_temporary( _environment, VT_BYTE, "(tile height)" );
 
    if ( tile->type == VT_TILE ) {
        cpu_move_8bit( _environment, tile->realName, result->realName );
    } else if ( tile->type == VT_TILES ) {
        outline1("LD A, (%s)", tile->realName );
        outline1("LD (%s), A", result->realName );
    } else {
        CRITICAL_NOT_TILE( _tile );
    }
 
    return result;
 
}