ScriptRunner.c

#include "ScriptRunner.h"

UWORD script_ptr = NULL;
UWORD script_start_ptr = NULL;
UBYTE script_ptr_bank = NULL;
UBYTE script_continue = NULL;

UBYTE script_stack_ptr = NULL;

STACKFRAME script_stack[8] = {
  {NULL, NULL, NULL},
  {NULL, NULL, NULL},
  {NULL, NULL, NULL},
  {NULL, NULL, NULL},
  {NULL, NULL, NULL},
  {NULL, NULL, NULL},
  {NULL, NULL, NULL},
  {NULL, NULL, NULL}
};

ScriptRunner.h

#ifndef SCRIPT_RUNNER_H
#define SCRIPT_RUNNER_H

extern UWORD script_ptr;
extern UWORD script_start_ptr;
extern UBYTE script_ptr_bank;
extern UBYTE script_continue;

typedef struct _STACKFRAME {
  UWORD script_ptr;
  UWORD script_start_ptr;
  UBYTE script_ptr_bank;
} STACKFRAME;

extern STACKFRAME script_stack[8];
extern UBYTE script_stack_ptr;

void Script_StackPush_b();
void Script_StackPop_b();

#endif

ScriptRunner_b.c

#include "ScriptRunner.h"

void Script_StackPush_b()
{
  script_stack[script_stack_ptr].script_ptr = script_ptr;
  script_stack[script_stack_ptr].script_ptr += 1 + script_cmd_args_len;
  script_stack[script_stack_ptr].script_start_ptr = script_start_ptr;
  script_stack[script_stack_ptr].script_ptr_bank = script_ptr_bank;
  script_stack_ptr++;
}

void Script_StackPop_b()
{
  script_stack_ptr--;
  script_ptr = script_stack[script_stack_ptr].script_ptr;
  script_start_ptr = script_stack[script_stack_ptr].script_start_ptr;
  script_ptr_bank = script_stack[script_stack_ptr].script_ptr_bank;
  script_continue = TRUE;
}