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More winder documentation

This commit is contained in:
Elliptic Ellipsis 2022-03-24 22:46:23 +00:00
parent 6eea9aace2
commit 1580dd1f2c
1 changed files with 10 additions and 10 deletions
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20
src/projectile/winder.c
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@ -11,19 +11,19 @@ extern s16 gUnk_080B4488[];
typedef enum {
/* 0 */ WINDER_TYPE_HEAD,
/* 4 */ WINDER_TYPE_4 = 4,
/* 4 */ WINDER_TYPE_TAIL = 4,
} WinderType;
void Winder_Init(WinderEntity* this);
void sub_080AB950(WinderEntity* this);
void Winder_Move(WinderEntity* this);
void Winder_SetPositions(WinderEntity*);
bool32 Winder_CheckNextTileCollision(WinderEntity* this, u32 dir);
bool32 Winder_CheckForRailings(WinderEntity* this, u32 dir);
void Winder(Entity* thisx) {
static void (*const Winder_Actions[])(WinderEntity*) = {
Winder_Init,
sub_080AB950,
Winder_Move,
};
WinderEntity* this = (WinderEntity*)thisx;
@ -44,7 +44,7 @@ void Winder_Init(WinderEntity* this) {
super->parent = super;
}
InitializeAnimation(super, 0);
if (super->type < 4) {
if (super->type < WINDER_TYPE_TAIL) {
nextSegment = CreateProjectile(WINDER);
nextSegment->type = super->type + 1;
nextSegment->parent = super->parent;
@ -59,7 +59,7 @@ void Winder_Init(WinderEntity* this) {
}
}
void sub_080AB950(WinderEntity* this) {
void Winder_Move(WinderEntity* this) {
static const u8 nextDirections[][2] = {
{ DirectionEast, DirectionWest },
{ DirectionNorth, DirectionSouth },
@ -68,13 +68,13 @@ void sub_080AB950(WinderEntity* this) {
};
static const u16 collisionChecks[] = { COL_NORTH_ANY, COL_EAST_ANY, COL_SOUTH_ANY, COL_WEST_ANY };
if (super->type == 0) {
if (super->type == WINDER_TYPE_HEAD) {
u8 dir;
ProcessMovement0(super);
dir = super->direction >> 3;
if ((collisionChecks[dir] & super->collisions) || Winder_CheckNextTileCollision(this, super->direction)) {
if ((collisionChecks[dir] & super->collisions) || Winder_CheckForRailings(this, super->direction)) {
super->direction = nextDirections[dir][Random() & 0x1];
}
} else {
@ -104,14 +104,14 @@ void Winder_SetPositions(WinderEntity* this) {
//! @bug Undefined behaviour for source and destination to overlap in a memcpy. In this case it is okay because the
//! copy will always be sequential, incremental and in chunks of <= 4 bytes, so it will copy the contents of
//! positions[0] and positions[1] to positions[2] and positions[3], then that of positions[2] and positions[3] to
//! positions[4] and positions[5], and so on. A safer way to do this would be a manual loop as in sub_080AB950.
//! positions[4] and positions[5], and so on. A safer way to do this would be a manual loop as in Winder_Move.
MemCopy(&this->positions[2], &this->positions[0], sizeof(u16) * (ARRAY_COUNT(this->positions) - 2));
this->positions[2 * (WINDER_NUM_SEGMENTS - 1)] = super->x.HALF.HI;
this->positions[2 * (WINDER_NUM_SEGMENTS - 1) + 1] = super->y.HALF.HI;
}
bool32 Winder_CheckNextTileCollision(WinderEntity* this, u32 dir) {
bool32 Winder_CheckForRailings(WinderEntity* this, u32 dir) {
u32 tile;
u32 val;
LayerStruct* layer = GetLayerByIndex(super->collisionLayer);