Dev Log #9 - The Door Bug

What a nasty bug.

When the first playtester ran into it, I was still like: "Ah, I'll just nudge the trigger a bit and it'll be fine."

Then came the second bug report. The third. Okay — I have a real problem here.

It all started because I wanted doors and map transitions that only let you through once a specific quest is completed. If the quest isn't done, the trigger pushes the player back — always two pixels, always in the direction they came from.

The first playtester managed to walk into the trigger's left corner from the right side. Result: the trigger shoved him straight into the wall.

With the new player movement system, it actually got even easier to accidentally trigger this bug.

Fix attempt #1:

I started checking not just the player's current direction, but also their next one.

Result: Fail — the player slides right over the trigger and into the next wall.

Fix attempt #2:

I check where the walls are and place the player in front of or behind them accordingly.

Result: Fail — the player can glitch straight through the trigger.

Fix attempt #3:

I remember the player's last position before the trigger, then place them back there.

Result: Fail — the player still glitches over the trigger. WAIT A SECOND... oh no. I copied the player's position instead of saving it.

Result (for real this time): the player gets properly placed back in front of the trigger.

Not only is the game more robust now — I also cut about 100 lines of code in the process.

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