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Update bugs_and_glitches.md

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Add fix for item image flicker
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Sierra A 2020-05-12 17:21:16 -07:00 committed by GitHub
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@ -14,6 +14,7 @@ Fixes are written in the `diff` format. If you've used Git before, this should l
## Contents
- [RNG does not get seeded](#rng-does-not-get-seeded)
- [Scrolling through items in the bag causes the image to flicker](#scrolling-through-items-in-the-bag-causes-the-image-to-flicker)
## RNG does not get seeded
@ -39,4 +40,38 @@ And edit `AgbMain`:
+ SeedRngWithRtc();
ClearDma3Requests();
...
```
```
## Scrolling through items in the bag causes the image to flicker
**Fix:** Add the following function to [src/item_menu_icons.c](https://github.com/pret/pokeemerald/blob/master/src/item_menu_icons.c):
```diff
+void HideBagItemIconSprite(u8 id)
+{
+ u8 *spriteId = &gBagMenu->spriteId[10];
+ if (spriteId[id] != 0xFF)
+ {
+ gSprites[spriteId[id]].invisible = TRUE;
+ }
+}
```
and its corresponding declaration in [include/item_menu_icons.h](https://github.com/pret/pokeemerald/blob/master/include/item_menu_icons.h):
```diff
+void HideBagItemIconSprite(u8 id);
```
Then edit `BagMenu_MoveCursorCallback` in [src/item_menu.c](https://github.com/pret/pokeemerald/blob/master/src/item_menu.c):
```diff
...
{
- RemoveBagItemIconSprite(1 ^ gBagMenu->unk81B_1);
+ HideBagItemIconSprite(gBagMenu->unk81B_1 ^ 1);
+ RemoveBagItemIconSprite(gBagMenu->unk81B_1);
if (a != -2)
...
```