ugBASIC 1.18
An isomorphic BASIC language compiler for retrocomputers
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begin_gameloop.c
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1/*****************************************************************************
2 * ugBASIC - an isomorphic BASIC language compiler for retrocomputers *
3 *****************************************************************************
4 * Copyright 2021-2026 Marco Spedaletti (asimov@mclink.it)
5 *
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
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12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
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15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 *----------------------------------------------------------------------------
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21 *
22 * http://www.apache.org/licenses/LICENSE-2.0
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24 * Se non richiesto dalla legislazione vigente o concordato per iscritto,
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30
31/****************************************************************************
32 * INCLUDE SECTION
33 ****************************************************************************/
34
35#include "../../ugbc.h"
36
37/****************************************************************************
38 * CODE SECTION
39 ****************************************************************************/
40
52/* <usermanual>
53@keyword BEGIN GAMELOOP
54</usermanual> */
55void begin_gameloop( Environment * _environment ) {
56
58
59 Loop * loop = malloc( sizeof( Loop ) );
60 memset( loop, 0, sizeof( Loop ) );
61 loop->label = strdup( label );
62 loop->type = LT_GAMELOOP;
63 loop->next = _environment->loops;
64 _environment->loops = loop;
65
66 cpu_label( _environment, loop->label );
67
68 _environment->hasGameLoop = 1;
69
70 outline0( "LDA $D40B");
71 outline0( "CMP #125");
72 outline1( "BCC %s", loop->label );
73
74}
void cpu_label(Environment *_environment, char *_label)
Definition 6309.c:356
void begin_gameloop(Environment *_environment)
Emit ASM code for BEGIN GAMELOOP.
int hasGameLoop
Definition ugbc.h:2646
Loop * loops
Definition ugbc.h:2669
void * malloc(YYSIZE_T)
void loop(Environment *_environment, char *_label)
struct _Environment Environment
Structure of compilation environment.
@ LT_GAMELOOP
Definition ugbc.h:1402
struct _Loop Loop
Structure of a single loop.
#define outline0(s)
Definition ugbc.h:4252
#define outline1(s, a)
Definition ugbc.h:4253
#define MAKE_LABEL
Definition ugbc.h:3351