Free Hero Mesh

  if(v.t==TY_CLASS) {
    return NVALUE(classes[v.u]->collisionLayers);
  } else {
    i=v_object(v);
    if(i==VOIDLINK) return NVALUE(0); else return NVALUE(classes[objects[i]->class]->collisionLayers);
  }
}

static Value v_lastr(Uint32 n) {
  Uint32 m;
  Uint32 x=0;
  if(n==VOIDLINK) return NVALUE(0);
  while(x++<nobjects) {
    m=v_object(objects[n]->replacement);
    if(m==VOIDLINK || m==n) return OVALUE(n);
    n=m;
  }
  Throw("Circular reference in LastR");
}

// Here is where the execution of a Free Hero Mesh bytecode subroutine is executed.
#define NoIgnore() do{ changed=1; }while(0)
#define GetVariableOf(a,b) (i=v_object(Pop()),i==VOIDLINK?NVALUE(0):b(objects[i]->a))
#define GetVariableOrAttributeOf(a,b) (t2=Pop(),t2.t==TY_CLASS?NVALUE(classes[t2.u]->a):(i=v_object(t2),i==VOIDLINK?NVALUE(0):b(objects[i]->a)))
#define Numeric(a) do{ if((a).t!=TY_NUMBER) Throw("Type mismatch"); }while(0)
#define DivideBy(a) do{ Numeric(a); if(!(a).u) Throw("Division by zero"); }while(0)

    case OP_KEY: StackReq(0,1); Push(NVALUE(current_key)); break;
    case OP_KEY_C: StackReq(0,2); i=current_key; if((i>='1' && i<='9') || (i>='A' && i<='Z')) Push(NVALUE(i&64?i+9-'A':i-'1')),Push(NVALUE(1)); else Push(NVALUE(0)); break;
    case OP_KEYCLEARED: StackReq(0,1); if(o->oflags&OF_KEYCLEARED) Push(NVALUE(1)); else Push(NVALUE(0)); break;
    case OP_KEYCLEARED_C: StackReq(1,1); GetFlagOf(OF_KEYCLEARED); break;
    case OP_KEYCLEARED_E: StackReq(1,0); if(v_bool(Pop())) o->oflags|=OF_KEYCLEARED; else o->oflags&=~OF_KEYCLEARED; break;
    case OP_KEYCLEARED_EC: StackReq(2,0); SetFlagOf(OF_KEYCLEARED); break;
    case OP_LAND: StackReq(2,1); t1=Pop(); t2=Pop(); if(v_bool(t1) && v_bool(t2)) Push(NVALUE(1)); else Push(NVALUE(0)); break;
    case OP_LASTR: StackReq(0,1); t1=v_lastr(obj); Push(t1); break;
    case OP_LASTR_C: StackReq(1,1); i=v_object(Pop()); t1=v_lastr(i); Push(t1); break;
    case OP_LE: StackReq(2,1); t2=Pop(); t1=Pop(); Push(NVALUE(v_unsigned_greater(t1,t2)?0:1)); break;
    case OP_LE_C: StackReq(2,1); t2=Pop(); t1=Pop(); Push(NVALUE(v_signed_greater(t1,t2)?0:1)); break;
    case OP_LEVEL: StackReq(0,1); Push(NVALUE(level_code)); break;
    case OP_LINK: StackReq(0,1); Push(UVALUE((ptr+2)|(code[ptr+1]<<16),TY_CODE)); ptr=code[ptr]; break;
    case OP_LNOT: StackReq(1,1); if(v_bool(Pop())) Push(NVALUE(0)); else Push(NVALUE(1)); break;
    case OP_LOC: StackReq(0,2); Push(NVALUE(o->x)); Push(NVALUE(o->y)); break;
    case OP_LOC_C: StackReq(1,2); i=v_object(Pop()); Push(NVALUE(i==VOIDLINK?0:objects[i]->x)); Push(NVALUE(i==VOIDLINK?0:objects[i]->y)); break;

    case OP_MUL_C: StackReq(2,1); t2=Pop(); Numeric(t2); t1=Pop(); Numeric(t1); Push(NVALUE(t1.s*t2.s)); break;
    case OP_NE: StackReq(2,1); t2=Pop(); t1=Pop(); Push(NVALUE(v_equal(t1,t2)?0:1)); break;
    case OP_NEG: StackReq(1,1); t1=Pop(); Numeric(t1); t1.s=-t1.s; Push(t1); break;
    case OP_NEWX: StackReq(2,1); t2=Pop(); Numeric(t2); t1=Pop(); Numeric(t1); Push(NVALUE(new_x(t1.u,t2.u))); break;
    case OP_NEWXY: StackReq(3,1); t3=Pop(); Numeric(t3); t2=Pop(); Numeric(t2); t1=Pop(); Numeric(t1); Push(NVALUE(new_x(t1.u,t3.u))); Push(NVALUE(new_y(t2.u,t3.u))); break;
    case OP_NEWY: StackReq(2,1); t2=Pop(); Numeric(t2); t1=Pop(); Numeric(t1); Push(NVALUE(new_y(t1.u,t2.u))); break;
    case OP_NEXT: StackReq(0,1); ptr=v_next(code,ptr); break;
    case OP_NEXTR: StackReq(0,1); Push(o->replacement); break;
    case OP_NEXTR_C: StackReq(1,1); i=v_object(Pop()); if(i!=VOIDLINK) Push(objects[i]->replacement); else Push(NVALUE(0)); break;
    case OP_NEXTR_E: StackReq(1,0); o->replacement=Pop(); break;
    case OP_NEXTR_EC: StackReq(2,1); t1=Pop(); i=v_object(Pop()); if(i!=VOIDLINK) objects[i]->replacement=t1; break;
    case OP_NIN: StackReq(2,1); i=v_in(); Push(NVALUE(i?0:1)); break;
    case OP_NIP: StackReq(2,1); t1=Pop(); Pop(); Push(t1); break;
    case OP_OBJABOVE: StackReq(0,1); i=obj_above(obj); Push(OVALUE(i)); break;
    case OP_OBJABOVE_C: StackReq(1,1); i=obj_above(v_object(Pop())); Push(OVALUE(i)); break;
    case OP_OBJBELOW: StackReq(0,1); i=obj_below(obj); Push(OVALUE(i)); break;
    case OP_OBJBELOW_C: StackReq(1,1); i=obj_below(v_object(Pop())); Push(OVALUE(i)); break;
    case OP_OBJBOTTOMAT: StackReq(2,1); t2=Pop(); Numeric(t2); t1=Pop(); Numeric(t1); i=obj_bottom_at(t1.u,t2.u); Push(OVALUE(i)); break;

    case OP_TARGET_C: StackReq(1,1); i=v_object(Pop()); Push(NVALUE(v_target(i)?1:0)); break;
    case OP_TEMPERATURE: StackReq(0,1); Push(NVALUE(o->temperature)); break;
    case OP_TEMPERATURE_C: StackReq(1,1); Push(GetVariableOrAttributeOf(temperature,NVALUE)); break;
    case OP_TEMPERATURE_E: NoIgnore(); StackReq(1,0); t1=Pop(); Numeric(t1); o->temperature=t1.u; break;
    case OP_TEMPERATURE_E16: NoIgnore(); StackReq(1,0); t1=Pop(); Numeric(t1); o->temperature=t1.u&0xFFFF; break;
    case OP_TEMPERATURE_EC: NoIgnore(); StackReq(2,0); t1=Pop(); Numeric(t1); i=v_object(Pop()); if(i!=VOIDLINK) objects[i]->temperature=t1.u; break;
    case OP_TEMPERATURE_EC16: NoIgnore(); StackReq(2,0); t1=Pop(); Numeric(t1); i=v_object(Pop()); if(i!=VOIDLINK) objects[i]->temperature=t1.u&0xFFFF; break;
    case OP_THISR: StackReq(0,1); t1=o->replacement; if(v_bool(t1)) Push(t1); else Push(OVALUE(obj)); break;
    case OP_THISR_C: StackReq(1,1); t2=Pop(); i=v_object(t2); if(i!=VOIDLINK) t1=objects[i]->replacement; else t1=NVALUE(0); if(!v_bool(t1)) t1=t2; Push(t2); break;
    case OP_THISR_E: StackReq(1,0); t1=Pop(); if(t1.u==obj && t1.t==o->generation) t1=NVALUE(0); o->replacement=t1; break;
    case OP_THISR_EC: StackReq(2,1); t1=Pop(); t2=Pop(); i=v_object(t2); if(i!=VOIDLINK) { if(t1.t==t2.t && t1.u==t2.u) t1=NVALUE(0); objects[i]->replacement=t1; } break;
    case OP_TMARK: StackReq(1,2); t1=Pop(); if(t1.t==TY_MARK) { Push(NVALUE(0)); } else { Push(t1); Push(NVALUE(1)); } break;
    case OP_TRACE: StackReq(3,0); trace_stack(obj); break;
    case OP_TRACESTACK: trace_stack_list(vstackptr); break;
    case OP_TRACESTACK_C: StackReq(1,0); t1=Pop(); Numeric(t1); trace_stack_list(t1.u); break;
    case OP_TRIGGER: NoIgnore(); StackReq(2,0); t1=Pop(); i=v_object(Pop()); if(i!=VOIDLINK) v_trigger(obj,i,t1); break;
    case OP_TRIGGERAT: NoIgnore(); StackReq(3,0); t3=Pop(); t2=Pop(); Numeric(t2); t1=Pop(); Numeric(t1); v_trigger_at(obj,t1.u,t2.u,t3); break;
    case OP_TUCK: StackReq(2,3); t2=Pop(); t1=Pop(); Push(t2); Push(t1); Push(t2); break;