Swap a pile of bools for one enum.
The problem
A bool for every state.
bool isIdle;bool isRunning;bool isJumping;bool isDead;
Nothing stops isRunning and isDead both being true. Every extra bool is another way to get it wrong.
Why it happens
Bools multiply.
Four bools can be combined 16 ways. Only four of those make sense.
4 bools→16 combinations
1 enum→4 states
The fix
One enum, one state.
enum PlayerState { Idle, Running, Jumping, Dead } PlayerState _state = PlayerState.Idle;
_state is always exactly one of the four. Impossible combinations can't exist.
Then
Switch on it.
switch ( _state ){ case PlayerState.Running: Run(); break; case PlayerState.Jumping: Fall(); break; case PlayerState.Dead: return;}
Each state's logic sits in one place, easy to read and easy to extend.
The rule
Model states, not flags.
- One at a time
- enum
- Independent yes/no
- bool
- Branch on it
- switch