draw_tile_column.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
 *
 * 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
 * limitations under the License.
 *----------------------------------------------------------------------------
 * Concesso in licenza secondo i termini della Licenza Apache, versione 2.0
 * (la "Licenza"); è proibito usare questo file se non in conformità alla
 * Licenza. Una copia della Licenza è disponibile all'indirizzo:
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Se non richiesto dalla legislazione vigente o concordato per iscritto,
 * il software distribuito nei termini della Licenza è distribuito
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/****************************************************************************
 * INCLUDE SECTION 
 ****************************************************************************/
 
#include "../../ugbc.h"
 
/****************************************************************************
 * CODE SECTION 
 ****************************************************************************/
 
extern char DATATYPE_AS_STRING[][16];

/* <usermanual>
@keyword PUT TILE
</usermanual> */
void draw_tile_column( Environment * _environment, char * _tile, char * _x, char * _y1, char * _y2, char * _color ) {
 
    Variable * tile = variable_retrieve( _environment, _tile );
    Variable * x = variable_retrieve_or_define( _environment, _x, VT_BYTE, 0 );
    Variable * y1 = variable_retrieve_or_define( _environment, _y1, VT_BYTE, 0 );
    Variable * y2 = variable_retrieve_or_define( _environment, _y2, VT_BYTE, 0 );
    if ( _color ) {
        pen( _environment, _color );
    }
 
    Variable * index = variable_temporary( _environment, VT_BYTE, "(index for)" );
    Variable * tileHeight = tile_get_height( _environment, tile->name );
    Variable * last = variable_sub( _environment, y2->name, tileHeight->name );
 
    begin_for_step( _environment, index->name, y1->name, last->name, tileHeight->name );
        put_tile( _environment, tile->name, x->name, index->name, NULL, NULL );
    end_for( _environment );
 
    Variable * residual = variable_sub( _environment, y2->name, index->name );
    
    put_tile( _environment, tile->name, x->name, y2->name, NULL, residual->name );
 
}