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more sky map documentation

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This commit is contained in:
DizzyEggg
2025-07-17 18:59:48 +02:00
parent 47cad2e720
commit 576653fc04
2 changed files with 28 additions and 19 deletions
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11
include/structs/str_ground_bg.h
View File

@@ -109,10 +109,19 @@ typedef struct LayerSpecs
s16 numChunks; // Number of chunks in the tilemap + 1. The +1 is the null chunk at the beginning of tile mappings, that is not stored.
} LayerSpecs;
typedef struct AnimationSpecification
{
s16 durationPerFrame; // Time in game frames to hold a single palette frame for
s16 numFrames; // Number of frames. This is also usually the length of frames in animation palette, but it can also be less.
} AnimationSpecification;
typedef struct BplHeader
{
s16 numPalettes;
s16 hasPalAnimations;
// RGB palettes
// Animation Specification array
// Animation RGB palettes
} BplHeader;
// size: 0x55C
@@ -131,7 +140,7 @@ typedef struct GroundBg
LayerSpecs layerSpecs;
BplHeader bplHeader;
const void *unk468;
const void *unk46C;
const AnimationSpecification *animationSpecifications;
u8 unk470;
u8 unk471;
s32 unk474;

36
src/ground_bg.c
View File

@@ -78,7 +78,7 @@ void GroundBg_Init(GroundBg *groundBg, const SubStruct_52C *a1)
groundBg->bmaHeader.mapWidthChunks = 0;
groundBg->bmaHeader.mapHeightChunks = 0;
unk0Ptr = &groundBg->unk0[0];
groundBg->unk46C = 0;
groundBg->animationSpecifications = 0;
groundBg->unk470 = 0;
groundBg->unk471 = 0;
@@ -172,7 +172,7 @@ void sub_80A2E64(GroundBg *groundBg)
groundBg->bmaHeader.mapWidthChunks = 0;
groundBg->bmaHeader.mapHeightChunks = 0;
unk0Ptr = &groundBg->unk0[0];
groundBg->unk46C = 0;
groundBg->animationSpecifications = NULL;
groundBg->unk470 = 0;
groundBg->unk471 = 0;
@@ -308,17 +308,17 @@ void sub_80A2FBC(GroundBg *groundBg, s32 mapFileId_)
sub0Ptr = groundBg->unk0;
unk0Id = 0;
if (bplHeader->hasPalAnimations != 0) {
const s16 *r3 = bplData + (bplHeader->numPalettes * 60);
const void *r6 = &r3[bplHeader->numPalettes * 2];
if (bplHeader->hasPalAnimations) {
const AnimationSpecification *animSpecifications = bplData + (bplHeader->numPalettes * 60);
const RGB_Array *animationPalette = ((void *) animSpecifications) + bplHeader->numPalettes * 4;
groundBg->unk46C = r3;
groundBg->animationSpecifications = animSpecifications;
groundBg->unk470 = 1;
groundBg->unk471 = 1;
for (; unk0Id < bplHeader->numPalettes && unk0Id < groundBg->unk52C.unk2; unk0Id++, sub0Ptr++, r3 += 2) {
if (r3[1] > 0) {
sub0Ptr->unk4 = r6;
r6 += r3[1] * 60;
for (; unk0Id < bplHeader->numPalettes && unk0Id < groundBg->unk52C.unk2; unk0Id++, sub0Ptr++, animSpecifications++) {
if (animSpecifications->numFrames > 0) {
sub0Ptr->unk4 = animationPalette;
animationPalette += animSpecifications->numFrames * 15;
}
else {
sub0Ptr->unk4 = NULL;
@@ -329,7 +329,7 @@ void sub_80A2FBC(GroundBg *groundBg, s32 mapFileId_)
}
}
else {
groundBg->unk46C = NULL;
groundBg->animationSpecifications = NULL;
groundBg->unk470 = 0;
groundBg->unk471 = 0;
}
@@ -507,7 +507,7 @@ void sub_80A3440(GroundBg *groundBg, s32 mapFileId_, const DungeonLocation *dung
if (groundBg->unk440 != NULL) {
sub_8004AA4(groundBg->unkE0, groundBg->unk440, UNK_E0_ARR_COUNT);
}
groundBg->unk46C = NULL;
groundBg->animationSpecifications = NULL;
groundBg->unk470 = 0;
groundBg->unk471 = 0;
@@ -684,7 +684,7 @@ static const u8 *BmaLayerNrlDecompressor(u16 **dstArray, const void *bmaData, Su
void sub_80A3B80(GroundBg *groundBg, u8 a1, u8 a2)
{
if (groundBg->unk46C != NULL) {
if (groundBg->animationSpecifications != NULL) {
groundBg->unk470 = a1;
groundBg->unk471 = a2;
}
@@ -1338,15 +1338,15 @@ void sub_80A4764(GroundBg *groundBg)
if (groundBg->bplHeader.hasPalAnimations) {
s32 i;
SubStruct_0 *sub0Ptr = groundBg->unk0;
const s16 *ptr = groundBg->unk46C;
const AnimationSpecification *animSpecifications = groundBg->animationSpecifications;
u16 r6 = groundBg->unk52C.unk0 * 16;
for (i = 0; i < groundBg->bplHeader.numPalettes; i++, sub0Ptr++, ptr += 2, r6 += 16) {
for (i = 0; i < groundBg->bplHeader.numPalettes; i++, sub0Ptr++, animSpecifications++, r6 += 16) {
if (sub0Ptr->unk4 != NULL && --sub0Ptr->unk2 <= 0) {
if (--sub0Ptr->unk0 <= 0) {
if (groundBg->unk471) {
sub0Ptr->unk2 = ptr[0];
sub0Ptr->unk0 = ptr[1];
sub0Ptr->unk2 = animSpecifications->durationPerFrame;
sub0Ptr->unk0 = animSpecifications->numFrames;
sub0Ptr->unk8 = sub0Ptr->unk4;
}
else {
@@ -1356,7 +1356,7 @@ void sub_80A4764(GroundBg *groundBg)
}
}
else {
sub0Ptr->unk2 = ptr[0];
sub0Ptr->unk2 = animSpecifications->durationPerFrame;
}
if (sub0Ptr->unk8 != NULL) {