pokeemerald/docs/bugs_and_glitches.md

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2020-05-09 17:16:43 +00:00
# Bugs and Glitches
These are known bugs and glitches in the original Pokémon Emerald game: code that clearly does not work as intended, or that only works in limited circumstances but has the possibility to fail or crash.
Fixes are written in the `diff` format. If you've used Git before, this should look familiar:
```diff
this is some code
-delete red - lines
+add green + lines
```
## Contents
- [RNG does not get seeded](#rng-does-not-get-seeded)
## RNG does not get seeded
**Fix:** Add the following function to [src/main.c](https://github.com/pret/pokeemerald/blob/master/src/main.c):
```diff
+static void SeedRngWithRtc(void)
+{
+ u32 seed = RtcGetMinuteCount();
+ seed = (seed >> 16) ^ (seed & 0xFFFF);
+ SeedRng(seed);
+}
```
And edit `AgbMain`:
```diff
...
RtcInit();
CheckForFlashMemory();
InitMainCallbacks();
InitMapMusic();
+ SeedRngWithRtc();
ClearDma3Requests();
...
```