private void Jmn(GameEngine engine, EvaluatedOp a, EvaluatedOp b)
{
var cond = b.IsImmediate ? b.Value : b.Statement.FieldB.CalculateByMod();
if (cond != 0)
{
engine.JumpTo(a.Addr);
}
}
private void Mov(GameEngine engine, EvaluatedOp a, EvaluatedOp b)
{
var newStatement =
a.IsImmediate ?
b.Statement.SetB(a.Value)
: a.Statement;
engine.WriteToMemory(b.Addr, newStatement);
}
private void Slt(GameEngine engine, EvaluatedOp a, EvaluatedOp b)
{
var left = a.IsImmediate ? a.Value : a.Statement.FieldB.CalculateByMod();
var right = b.Statement.FieldB.CalculateByMod();
if (left < right)
{
engine.JumpTo(engine.CurrentIp + 2);
}
}
private void Djn(GameEngine engine, EvaluatedOp a, EvaluatedOp b)
{
var bAddr = b.IsImmediate ? engine.CurrentIp : b.Addr;
DecrementB(engine, bAddr);
var condition = engine.Memory[bAddr].Statement.FieldB.CalculateByMod();
if (condition != 0)
{
engine.JumpTo(a.Addr);
}
}
private void Sub(GameEngine engine, EvaluatedOp a, EvaluatedOp b)
{
var statementB = b.Statement;
if (a.IsImmediate)
{
engine.WriteToMemory(b.Addr, statementB.SetB(statementB.FieldB.Calculate() - a.Value));
}
else
{
var statementA = a.Statement;
engine.WriteToMemory(b.Addr,
statementB
.SetA(statementB.FieldA.Calculate() - statementA.FieldA.Calculate())
.SetB(statementB.FieldB.Calculate() - statementA.FieldB.Calculate()));
}
}
private void Cmp(GameEngine engine, EvaluatedOp a, EvaluatedOp b)
{
bool condition;
if (a.IsImmediate)
{
var left = a.Value;
var right = b.Statement.FieldB.CalculateByMod();
condition = left == right;
}
else
{
condition = a.Statement == b.Statement;
}
if (condition)
{
engine.JumpTo(engine.CurrentIp + 2);
}
}
private void Dat(GameEngine engine, EvaluatedOp a, EvaluatedOp b)
{
engine.KillCurrentProcess();
}
private void Spl(GameEngine engine, EvaluatedOp a, EvaluatedOp b)
{
engine.SplitAt(a.Addr);
}
private void Jmp(GameEngine engine, EvaluatedOp a, EvaluatedOp b)
{
engine.JumpTo(a.Addr);
}
