Common shapes

A method can look unique in C# while using a shape you already know. These six come from the Platformer’s real runtime scripts. Each page names the game problem, traces the graph, shows the current source, and makes one small extension visible.

Pick the shape

• Guard clause: Door.Enter leaves early for a missing player, locked goal, or completed level.
• Count and threshold: ScoreCounter.OnCoinCountChanged turns a coin total into a door decision.
• Switch on a state: EnemyStateMachine.ApplyState gives each state its own calls.
• Turn at the edge: EnemyPatrol.FixedUpdate reverses at the left or right bound.
• Scan a list: PlayerMotor.UpdateGrounded finds the first contact normal that points up past the grounding threshold.
• Call a neighbor: PlayerController.CollectCoin passes work to the coin, score, HUD, and audio components.

Read the flow guides when the white exec wire is the question. Read calls and data when the receiver, argument, or returned value is the question.

Next

• Guard clause: start with the smallest control-flow shape.
• Flow: learn branches, loops, switches, returns, and throws.
• Calls and data: learn calls, reads, writes, operators, and values.