Blueprint Workflow & Debugging

• Use the Blueprint Watch Window with watched pins. There's no true locals panel — hover pins for tooltip values.
• Breakpoints can't be placed on pure nodes. If you need to inspect one, wire it into something impure, or watch the pin instead.
• Continue re-hits the same breakpoint within a frame. The workaround is to ping-pong between two breakpoints.
• Flag debug-only logic with Development Only nodes, so it's stripped from shipping builds.

• Live Coding hot-patches a patch DLL. Iterate in-editor with Ctrl+Alt+F11.
• Never build from Visual Studio while the editor is open — lock contention. Use Live Coding for in-editor iteration, and build from VS with the editor closed.

Regenerating project files

When the .sln gets stale, from the command line:

"<Engine>\Engine\Build\BatchFiles\Build.bat" -projectfiles
    -project="<path>\Project.uproject" -game -rocket -progress

2D arrays aren't native

Two standard approaches:

• Struct wrapper — a struct holding an inner TArray, then an array of that struct.
• Flat 1D array with index math: Index = Row * NumColumns + Col.

Small mercies

• Remove Item is safe on an element that isn't present — it's a no-op, not an error.