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Diffstat (limited to 'src/bg.c')
-rw-r--r--src/bg.c166
1 files changed, 86 insertions, 80 deletions
diff --git a/src/bg.c b/src/bg.c
index 21624e4a0..54ec3b347 100644
--- a/src/bg.c
+++ b/src/bg.c
@@ -77,15 +77,27 @@ void ResetBgControlStructs(void)
void Unused_ResetBgControlStruct(u8 bg)
{
- if (IsInvalidBg(bg) == FALSE)
+ if (!IsInvalidBg(bg))
{
sGpuBgConfigs.configs[bg] = sZeroedBgControlStruct;
}
}
-void SetBgControlAttributes(u8 bg, u8 charBaseIndex, u8 mapBaseIndex, u8 screenSize, u8 paletteMode, u8 priority, u8 mosaic, u8 wraparound)
+enum
{
- if (IsInvalidBg(bg) == FALSE)
+ BG_CTRL_ATTR_VISIBLE = 1,
+ BG_CTRL_ATTR_CHARBASEINDEX = 2,
+ BG_CTRL_ATTR_MAPBASEINDEX = 3,
+ BG_CTRL_ATTR_SCREENSIZE = 4,
+ BG_CTRL_ATTR_PALETTEMODE = 5,
+ BG_CTRL_ATTR_PRIORITY = 6,
+ BG_CTRL_ATTR_MOSAIC = 7,
+ BG_CTRL_ATTR_WRAPAROUND = 8,
+};
+
+static void SetBgControlAttributes(u8 bg, u8 charBaseIndex, u8 mapBaseIndex, u8 screenSize, u8 paletteMode, u8 priority, u8 mosaic, u8 wraparound)
+{
+ if (!IsInvalidBg(bg))
{
if (charBaseIndex != 0xFF)
{
@@ -129,9 +141,9 @@ void SetBgControlAttributes(u8 bg, u8 charBaseIndex, u8 mapBaseIndex, u8 screenS
}
}
-u16 GetBgControlAttribute(u8 bg, u8 attributeId)
+static u16 GetBgControlAttribute(u8 bg, u8 attributeId)
{
- if (IsInvalidBg(bg) == FALSE && sGpuBgConfigs.configs[bg].visible != FALSE)
+ if (!IsInvalidBg(bg) && sGpuBgConfigs.configs[bg].visible)
{
switch (attributeId)
{
@@ -162,7 +174,7 @@ u8 LoadBgVram(u8 bg, const void *src, u16 size, u16 destOffset, u8 mode)
u16 offset;
s8 cursor;
- if (IsInvalidBg(bg) == FALSE && sGpuBgConfigs.configs[bg].visible != FALSE)
+ if (!IsInvalidBg(bg) && sGpuBgConfigs.configs[bg].visible)
{
switch (mode)
{
@@ -198,7 +210,7 @@ end:
static void ShowBgInternal(u8 bg)
{
u16 value;
- if (IsInvalidBg(bg) == FALSE && sGpuBgConfigs.configs[bg].visible != FALSE)
+ if (!IsInvalidBg(bg) && sGpuBgConfigs.configs[bg].visible)
{
value = sGpuBgConfigs.configs[bg].priority |
(sGpuBgConfigs.configs[bg].charBaseIndex << 2) |
@@ -217,7 +229,7 @@ static void ShowBgInternal(u8 bg)
static void HideBgInternal(u8 bg)
{
- if (IsInvalidBg(bg) == FALSE)
+ if (!IsInvalidBg(bg))
{
sGpuBgConfigs.bgVisibilityAndMode &= ~(1 << (bg + 8));
sGpuBgConfigs.bgVisibilityAndMode &= DISPCNT_ALL_BG_AND_MODE_BITS;
@@ -226,12 +238,12 @@ static void HideBgInternal(u8 bg)
static void SyncBgVisibilityAndMode(void)
{
- SetGpuReg(0, (GetGpuReg(0) & ~DISPCNT_ALL_BG_AND_MODE_BITS) | sGpuBgConfigs.bgVisibilityAndMode);
+ SetGpuReg(REG_OFFSET_DISPCNT, (GetGpuReg(REG_OFFSET_DISPCNT) & ~DISPCNT_ALL_BG_AND_MODE_BITS) | sGpuBgConfigs.bgVisibilityAndMode);
}
void SetTextModeAndHideBgs(void)
{
- SetGpuReg(0, GetGpuReg(0) & ~DISPCNT_ALL_BG_AND_MODE_BITS);
+ SetGpuReg(REG_OFFSET_DISPCNT, GetGpuReg(REG_OFFSET_DISPCNT) & ~DISPCNT_ALL_BG_AND_MODE_BITS);
}
static void SetBgAffineInternal(u8 bg, u32 srcCenterX, u32 srcCenterY, s16 dispCenterX, s16 dispCenterY, s16 scaleX, s16 scaleY, u16 rotationAngle)
@@ -312,7 +324,8 @@ void InitBgsFromTemplates(u8 bgMode, const struct BgTemplate *templates, u8 numT
for (i = 0; i < numTemplates; i++)
{
bg = templates[i].bg;
- if (bg < 4) {
+ if (bg < 4)
+ {
SetBgControlAttributes(bg,
templates[i].charBaseIndex,
templates[i].mapBaseIndex,
@@ -396,9 +409,7 @@ u16 LoadBgTiles(u8 bg, const void* src, u16 size, u16 destOffset)
u16 LoadBgTilemap(u8 bg, const void *src, u16 size, u16 destOffset)
{
- u8 cursor;
-
- cursor = LoadBgVram(bg, src, size, destOffset * 2, DISPCNT_MODE_2);
+ u8 cursor = LoadBgVram(bg, src, size, destOffset * 2, DISPCNT_MODE_2);
if (cursor == 0xFF)
{
@@ -412,12 +423,11 @@ u16 LoadBgTilemap(u8 bg, const void *src, u16 size, u16 destOffset)
u16 Unused_LoadBgPalette(u8 bg, const void *src, u16 size, u16 destOffset)
{
- u16 paletteOffset;
s8 cursor;
- if (IsInvalidBg32(bg) == FALSE)
+ if (!IsInvalidBg32(bg))
{
- paletteOffset = (sGpuBgConfigs2[bg].basePalette * 0x20) + (destOffset * 2);
+ u16 paletteOffset = (sGpuBgConfigs2[bg].basePalette * 0x20) + (destOffset * 2);
cursor = RequestDma3Copy(src, (void*)(paletteOffset + BG_PLTT), size, 0);
if (cursor == -1)
@@ -437,20 +447,16 @@ u16 Unused_LoadBgPalette(u8 bg, const void *src, u16 size, u16 destOffset)
bool8 IsDma3ManagerBusyWithBgCopy(void)
{
- u8 mod;
- u8 div;
- s8 reqSpace;
-
int i;
for (i = 0; i < 0x80; i++)
{
- div = i / 0x20;
- mod = i % 0x20;
+ u8 div = i / 0x20;
+ u8 mod = i % 0x20;
- if ((sDmaBusyBitfield[div] & (1 << mod)) != FALSE)
+ if ((sDmaBusyBitfield[div] & (1 << mod)))
{
- reqSpace = CheckForSpaceForDma3Request(i);
+ s8 reqSpace = CheckForSpaceForDma3Request(i);
if (reqSpace == -1)
{
return TRUE;
@@ -479,25 +485,25 @@ void SetBgAttribute(u8 bg, u8 attributeId, u8 value)
{
switch (attributeId)
{
- case 1:
+ case BG_ATTR_CHARBASEINDEX:
SetBgControlAttributes(bg, value, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF);
break;
- case 2:
+ case BG_ATTR_MAPBASEINDEX:
SetBgControlAttributes(bg, 0xFF, value, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF);
break;
- case 3:
+ case BG_ATTR_SCREENSIZE:
SetBgControlAttributes(bg, 0xFF, 0xFF, value, 0xFF, 0xFF, 0xFF, 0xFF);
break;
- case 4:
+ case BG_ATTR_PALETTEMODE:
SetBgControlAttributes(bg, 0xFF, 0xFF, 0xFF, value, 0xFF, 0xFF, 0xFF);
break;
- case 7:
+ case BG_ATTR_PRIORITY:
SetBgControlAttributes(bg, 0xFF, 0xFF, 0xFF, 0xFF, value, 0xFF, 0xFF);
break;
- case 5:
+ case BG_ATTR_MOSAIC:
SetBgControlAttributes(bg, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, value, 0xFF);
break;
- case 6:
+ case BG_ATTR_WRAPAROUND:
SetBgControlAttributes(bg, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, value);
break;
}
@@ -507,21 +513,21 @@ u16 GetBgAttribute(u8 bg, u8 attributeId)
{
switch (attributeId)
{
- case 1:
+ case BG_ATTR_CHARBASEINDEX:
return GetBgControlAttribute(bg, BG_CTRL_ATTR_CHARBASEINDEX);
- case 2:
+ case BG_ATTR_MAPBASEINDEX:
return GetBgControlAttribute(bg, BG_CTRL_ATTR_MAPBASEINDEX);
- case 3:
+ case BG_ATTR_SCREENSIZE:
return GetBgControlAttribute(bg, BG_CTRL_ATTR_SCREENSIZE);
- case 4:
+ case BG_ATTR_PALETTEMODE:
return GetBgControlAttribute(bg, BG_CTRL_ATTR_PALETTEMODE);
- case 7:
+ case BG_ATTR_PRIORITY:
return GetBgControlAttribute(bg, BG_CTRL_ATTR_PRIORITY);
- case 5:
+ case BG_ATTR_MOSAIC:
return GetBgControlAttribute(bg, BG_CTRL_ATTR_MOSAIC);
- case 6:
+ case BG_ATTR_WRAPAROUND:
return GetBgControlAttribute(bg, BG_CTRL_ATTR_WRAPAROUND);
- case 8:
+ case BG_ATTR_METRIC:
switch (GetBgType(bg))
{
case 0:
@@ -531,9 +537,9 @@ u16 GetBgAttribute(u8 bg, u8 attributeId)
default:
return 0;
}
- case 9:
+ case BG_ATTR_TYPE:
return GetBgType(bg);
- case 10:
+ case BG_ATTR_BASETILE:
return sGpuBgConfigs2[bg].baseTile;
default:
return -1;
@@ -546,7 +552,7 @@ s32 ChangeBgX(u8 bg, s32 value, u8 op)
u16 temp1;
u16 temp2;
- if (IsInvalidBg32(bg) != FALSE || GetBgControlAttribute(bg, BG_CTRL_ATTR_VISIBLE) == 0)
+ if (IsInvalidBg32(bg) || !GetBgControlAttribute(bg, BG_CTRL_ATTR_VISIBLE))
{
return -1;
}
@@ -612,9 +618,9 @@ s32 ChangeBgX(u8 bg, s32 value, u8 op)
s32 GetBgX(u8 bg)
{
- if (IsInvalidBg32(bg) != FALSE)
+ if (IsInvalidBg32(bg))
return -1;
- else if (GetBgControlAttribute(bg, BG_CTRL_ATTR_VISIBLE) == 0)
+ else if (!GetBgControlAttribute(bg, BG_CTRL_ATTR_VISIBLE))
return -1;
else
return sGpuBgConfigs2[bg].bg_x;
@@ -626,7 +632,7 @@ s32 ChangeBgY(u8 bg, s32 value, u8 op)
u16 temp1;
u16 temp2;
- if (IsInvalidBg32(bg) != FALSE || GetBgControlAttribute(bg, BG_CTRL_ATTR_VISIBLE) == 0)
+ if (IsInvalidBg32(bg) || !GetBgControlAttribute(bg, BG_CTRL_ATTR_VISIBLE))
{
return -1;
}
@@ -696,7 +702,7 @@ s32 ChangeBgY_ScreenOff(u8 bg, u32 value, u8 op)
u16 temp1;
u16 temp2;
- if (IsInvalidBg32(bg) != FALSE || GetBgControlAttribute(bg, BG_CTRL_ATTR_VISIBLE) == 0)
+ if (IsInvalidBg32(bg) || !GetBgControlAttribute(bg, BG_CTRL_ATTR_VISIBLE))
{
return -1;
}
@@ -763,9 +769,9 @@ s32 ChangeBgY_ScreenOff(u8 bg, u32 value, u8 op)
s32 GetBgY(u8 bg)
{
- if (IsInvalidBg32(bg) != FALSE)
+ if (IsInvalidBg32(bg))
return -1;
- else if (GetBgControlAttribute(bg, BG_CTRL_ATTR_VISIBLE) == 0)
+ else if (!GetBgControlAttribute(bg, BG_CTRL_ATTR_VISIBLE))
return -1;
else
return sGpuBgConfigs2[bg].bg_y;
@@ -849,7 +855,7 @@ u8 Unused_AdjustBgMosaic(u8 a1, u8 a2)
void SetBgTilemapBuffer(u8 bg, void *tilemap)
{
- if (IsInvalidBg32(bg) == FALSE && GetBgControlAttribute(bg, BG_CTRL_ATTR_VISIBLE) != 0x0)
+ if (!IsInvalidBg32(bg) && GetBgControlAttribute(bg, BG_CTRL_ATTR_VISIBLE))
{
sGpuBgConfigs2[bg].tilemap = tilemap;
}
@@ -857,7 +863,7 @@ void SetBgTilemapBuffer(u8 bg, void *tilemap)
void UnsetBgTilemapBuffer(u8 bg)
{
- if (IsInvalidBg32(bg) == FALSE && GetBgControlAttribute(bg, BG_CTRL_ATTR_VISIBLE) != 0x0)
+ if (!IsInvalidBg32(bg) && GetBgControlAttribute(bg, BG_CTRL_ATTR_VISIBLE))
{
sGpuBgConfigs2[bg].tilemap = NULL;
}
@@ -865,9 +871,9 @@ void UnsetBgTilemapBuffer(u8 bg)
void* GetBgTilemapBuffer(u8 bg)
{
- if (IsInvalidBg32(bg) != FALSE)
+ if (IsInvalidBg32(bg))
return NULL;
- else if (GetBgControlAttribute(bg, BG_CTRL_ATTR_VISIBLE) == 0)
+ else if (!GetBgControlAttribute(bg, BG_CTRL_ATTR_VISIBLE))
return NULL;
else
return sGpuBgConfigs2[bg].tilemap;
@@ -875,7 +881,7 @@ void* GetBgTilemapBuffer(u8 bg)
void CopyToBgTilemapBuffer(u8 bg, const void *src, u16 mode, u16 destOffset)
{
- if (IsInvalidBg32(bg) == FALSE && IsTileMapOutsideWram(bg) == FALSE)
+ if (!IsInvalidBg32(bg) && !IsTileMapOutsideWram(bg))
{
if (mode != 0)
CpuCopy16(src, (void *)(sGpuBgConfigs2[bg].tilemap + (destOffset * 2)), mode);
@@ -888,7 +894,7 @@ void CopyBgTilemapBufferToVram(u8 bg)
{
u16 sizeToLoad;
- if (IsInvalidBg32(bg) == FALSE && IsTileMapOutsideWram(bg) == FALSE)
+ if (!IsInvalidBg32(bg) && !IsTileMapOutsideWram(bg))
{
switch (GetBgType(bg))
{
@@ -908,12 +914,12 @@ void CopyBgTilemapBufferToVram(u8 bg)
void CopyToBgTilemapBufferRect(u8 bg, const void* src, u8 destX, u8 destY, u8 width, u8 height)
{
- const void* srcCopy;
+ const void *srcCopy;
u16 destX16;
u16 destY16;
u16 mode;
- if (IsInvalidBg32(bg) == FALSE && IsTileMapOutsideWram(bg) == FALSE)
+ if (!IsInvalidBg32(bg) && !IsTileMapOutsideWram(bg))
{
switch (GetBgType(bg))
{
@@ -997,29 +1003,29 @@ void FillBgTilemapBufferRect_Palette0(u8 bg, u16 tileNum, u8 x, u8 y, u8 width,
u16 y16;
u16 mode;
- if (IsInvalidBg32(bg) == FALSE && IsTileMapOutsideWram(bg) == FALSE)
+ if (!IsInvalidBg32(bg) && !IsTileMapOutsideWram(bg))
{
switch (GetBgType(bg))
{
- case 0:
- for (y16 = y; y16 < (y + height); y16++)
+ case 0:
+ for (y16 = y; y16 < (y + height); y16++)
+ {
+ for (x16 = x; x16 < (x + width); x16++)
{
- for (x16 = x; x16 < (x + width); x16++)
- {
- ((u16*)sGpuBgConfigs2[bg].tilemap)[((y16 * 0x20) + x16)] = tileNum;
- }
+ ((u16*)sGpuBgConfigs2[bg].tilemap)[((y16 * 0x20) + x16)] = tileNum;
}
- break;
- case 1:
- mode = GetBgMetricAffineMode(bg, 0x1);
- for (y16 = y; y16 < (y + height); y16++)
+ }
+ break;
+ case 1:
+ mode = GetBgMetricAffineMode(bg, 0x1);
+ for (y16 = y; y16 < (y + height); y16++)
+ {
+ for (x16 = x; x16 < (x + width); x16++)
{
- for (x16 = x; x16 < (x + width); x16++)
- {
- ((u8*)sGpuBgConfigs2[bg].tilemap)[((y16 * mode) + x16)] = tileNum;
- }
+ ((u8*)sGpuBgConfigs2[bg].tilemap)[((y16 * mode) + x16)] = tileNum;
}
- break;
+ }
+ break;
}
}
}
@@ -1071,12 +1077,12 @@ void WriteSequenceToBgTilemapBuffer(u8 bg, u16 firstTileNum, u8 x, u8 y, u8 widt
u16 GetBgMetricTextMode(u8 bg, u8 whichMetric)
{
- u8 attribute = GetBgControlAttribute(bg, BG_CTRL_ATTR_SCREENSIZE);
+ u8 screenSize = GetBgControlAttribute(bg, BG_CTRL_ATTR_SCREENSIZE);
switch (whichMetric)
{
case 0:
- switch (attribute)
+ switch (screenSize)
{
case 0:
return 1;
@@ -1088,7 +1094,7 @@ u16 GetBgMetricTextMode(u8 bg, u8 whichMetric)
}
break;
case 1:
- switch (attribute)
+ switch (screenSize)
{
case 0:
return 1;
@@ -1101,7 +1107,7 @@ u16 GetBgMetricTextMode(u8 bg, u8 whichMetric)
}
break;
case 2:
- switch (attribute)
+ switch (screenSize)
{
case 0:
case 1:
@@ -1117,12 +1123,12 @@ u16 GetBgMetricTextMode(u8 bg, u8 whichMetric)
u32 GetBgMetricAffineMode(u8 bg, u8 whichMetric)
{
- u8 attribute = GetBgControlAttribute(bg, BG_CTRL_ATTR_SCREENSIZE);
+ u8 screenSize = GetBgControlAttribute(bg, BG_CTRL_ATTR_SCREENSIZE);
switch (whichMetric)
{
case 0:
- switch (attribute)
+ switch (screenSize)
{
case 0:
return 0x1;
@@ -1136,7 +1142,7 @@ u32 GetBgMetricAffineMode(u8 bg, u8 whichMetric)
break;
case 1:
case 2:
- return 0x10 << attribute;
+ return 0x10 << screenSize;
}
return 0;
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-06-06 19:42:20 +0000