draw_tile_row.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
 *
 * http://www.apache.org/licenses/LICENSE-2.0
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 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
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 *----------------------------------------------------------------------------
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/****************************************************************************
 * INCLUDE SECTION 
 ****************************************************************************/
 
#include "../../ugbc.h"
 
/****************************************************************************
 * CODE SECTION 
 ****************************************************************************/
 
extern char DATATYPE_AS_STRING[][16];

 
/* <usermanual>
@keyword DTILE
 
@english
 
This command allows you to draw a row or column of "tiles", 
or predefined characters.
 
@italian
 
Questo comando permette di disegnare una riga o una colonna di "tiles", 
ovvero di caratteri predefiniti.
 
@syntax DTILE v ROW y, x1 TO x2[, c]
@syntax DTILE v COLUMN x, y1 TO y2[, c]
 
@alias DTILES
 
</usermanual> */
/* <usermanual>
@keyword DTILES
 
@english
 
@italian
 
@syntax DTILES v ROW y, x1 TO x2[, c]
@syntax DTILES v COLUMN x, y1 TO y2[, c]
 
@alias DTILE
 
</usermanual> */
void draw_tile_row( Environment * _environment, char * _tile, char * _y, char * _x1, char * _x2, char * _color ) {
 
    Variable * tile = variable_retrieve( _environment, _tile );
    Variable * y = variable_retrieve_or_define( _environment, _y, VT_BYTE, 0 );
    Variable * x1 = variable_retrieve_or_define( _environment, _x1, VT_BYTE, 0 );
    Variable * x2 = variable_retrieve_or_define( _environment, _x2, VT_BYTE, 0 );
    if ( _color ) {
        pen( _environment, _color );
    }
 
    Variable * index = variable_temporary( _environment, VT_BYTE, "(index for)" );
    Variable * tileWidth = tile_get_width( _environment, tile->name );
    Variable * last = variable_sub( _environment, x2->name, tileWidth->name );
 
    begin_for_step( _environment, index->name, x1->name, last->name, tileWidth->name );
        put_tile( _environment, tile->name, index->name, y->name, NULL, NULL );
    end_for( _environment );
 
    Variable * residual = variable_sub( _environment, x2->name, index->name );
    
    put_tile( _environment, tile->name, index->name, y->name, residual->name, NULL );
 
}