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Add macros for metatile manipulation

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This commit is contained in:
Phlosioneer
2019-02-22 03:08:48 -05:00
committed by huderlem
parent 9ed0f77528
commit 189d387f01
12 changed files with 70 additions and 61 deletions
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37
src/fieldmap.c
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@@ -383,15 +383,15 @@ u8 MapGridGetZCoordAt(int x, int y)
i = (x + 1) & 1;
i += ((y + 1) & 1) * 2;
block = gMapHeader.mapLayout->border[i];
block |= 0xc00;
block |= MAP_IMPASSABLE_MASK;
}
if (block == 0x3ff)
if (block == MAP_UNDEFINED_METATILE_ID)
{
return 0;
}
return block >> 12;
return block >> MAP_TILE_ELEVATION_SHIFT;
}
u8 MapGridIsImpassableAt(int x, int y)
@@ -411,13 +411,13 @@ u8 MapGridIsImpassableAt(int x, int y)
i = (x + 1) & 1;
i += ((y + 1) & 1) * 2;
block = gMapHeader.mapLayout->border[i];
block |= 0xc00;
block |= MAP_IMPASSABLE_MASK;
}
if (block == 0x3ff)
if (block == MAP_UNDEFINED_METATILE_ID)
{
return 1;
}
return (block & 0xc00) >> 10;
return (block & MAP_IMPASSABLE_MASK) >> MAP_IMPASSABLE_SHIFT;
}
u32 MapGridGetMetatileIdAt(int x, int y)
@@ -439,18 +439,19 @@ u32 MapGridGetMetatileIdAt(int x, int y)
mapLayout = gMapHeader.mapLayout;
i = (x + 1) & 1;
i += ((y + 1) & 1) * 2;
block = mapLayout->border[i] | 0xc00;
block = mapLayout->border[i] | MAP_IMPASSABLE_MASK;
}
if (block == 0x3ff)
if (block == MAP_UNDEFINED_METATILE_ID)
{
border = gMapHeader.mapLayout->border;
j = (x + 1) & 1;
j += ((y + 1) & 1) * 2;
block2 = gMapHeader.mapLayout->border[j];
block2 |= 0xc00;
return block2 & block;
// This OR is completely pointless.
block2 |= MAP_IMPASSABLE_MASK;
return block2 & MAP_METATILE_ID_MASK;
}
return block & 0x3ff;
return block & MAP_METATILE_ID_MASK;
}
u32 MapGridGetMetatileBehaviorAt(int x, int y)
@@ -464,7 +465,7 @@ u8 MapGridGetMetatileLayerTypeAt(int x, int y)
{
u16 metatile;
metatile = MapGridGetMetatileIdAt(x, y);
return (GetBehaviorByMetatileId(metatile) & 0xf000) >> 12;
return (GetBehaviorByMetatileId(metatile) & MAP_TILE_ELEVATION_MASK) >> MAP_TILE_ELEVATION_SHIFT;
}
void MapGridSetMetatileIdAt(int x, int y, u16 metatile)
@@ -474,7 +475,7 @@ void MapGridSetMetatileIdAt(int x, int y, u16 metatile)
&& y >= 0 && y < gBackupMapLayout.height)
{
i = x + y * gBackupMapLayout.width;
gBackupMapLayout.map[i] = (gBackupMapLayout.map[i] & 0xf000) | (metatile & 0xfff);
gBackupMapLayout.map[i] = (gBackupMapLayout.map[i] & MAP_TILE_ELEVATION_MASK) | (metatile & ~MAP_TILE_ELEVATION_MASK);
}
}
@@ -654,7 +655,7 @@ int GetMapBorderIdAt(int x, int y)
i = gBackupMapLayout.width;
i *= y;
block = gBackupMapLayout.map[x + i];
if (block == 0x3ff)
if (block == MAP_UNDEFINED_METATILE_ID)
{
goto fail;
}
@@ -664,8 +665,8 @@ int GetMapBorderIdAt(int x, int y)
mapLayout = gMapHeader.mapLayout;
j = (x + 1) & 1;
j += ((y + 1) & 1) * 2;
block2 = 0xc00 | mapLayout->border[j];
if (block2 == 0x3ff)
block2 = MAP_IMPASSABLE_MASK | mapLayout->border[j];
if (block2 == MAP_UNDEFINED_METATILE_ID)
{
goto fail;
}
@@ -921,7 +922,7 @@ void sub_8088B94(int x, int y, int a2)
if (x >= 0 && x < gBackupMapLayout.width && y >= 0 && y < gBackupMapLayout.height)
{
if (a2 != 0)
gBackupMapLayout.map[x + gBackupMapLayout.width * y] |= 0xC00;
gBackupMapLayout.map[x + gBackupMapLayout.width * y] |= MAP_IMPASSABLE_MASK;
else
gBackupMapLayout.map[x + gBackupMapLayout.width * y] &= 0xF3FF;
}
@@ -937,7 +938,7 @@ static bool8 SkipCopyingMetatileFromSavedMap(u16* mapMetatilePtr, u16 mapWidth,
else
mapMetatilePtr += mapWidth;
if (sub_80FADE4(*mapMetatilePtr & 0x3FF, yMode) == 1)
if (sub_80FADE4(*mapMetatilePtr & MAP_METATILE_ID_MASK, yMode) == 1)
return TRUE;
return FALSE;
}