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Code Issues Projects Releases Wiki Activity

Document Camera Special9 (door) angle bug (#1525)

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* document special9 angle bug

* Update src/code/z_camera.c

Co-authored-by: Dragorn421 <Dragorn421@users.noreply.github.com>

---------

Co-authored-by: Dragorn421 <Dragorn421@users.noreply.github.com>
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fig02 2023-09-13 20:21:54 -04:00 committed by GitHub
parent 7235af2249
commit 7145bc346d
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1 changed files with 14 additions and 8 deletions
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22
src/code/z_camera.c
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@ -6876,7 +6876,7 @@ s32 Camera_Special9(Camera* camera) {
f32 playerYOffset;
s32 pad3;
PosRot* playerPosRot = &camera->playerPosRot;
PosRot adjustedPlayerPosRot;
PosRot referencePosRot;
f32 yNormal;
DoorParams* doorParams = &camera->paramData.doorParams;
Special9ReadOnlyData* roData = &camera->paramData.spec9.roData;
@ -6902,11 +6902,11 @@ s32 Camera_Special9(Camera* camera) {
}
if (doorParams->doorActor != NULL) {
Actor_GetWorldPosShapeRot(&adjustedPlayerPosRot, doorParams->doorActor);
Actor_GetWorldPosShapeRot(&referencePosRot, doorParams->doorActor);
} else {
adjustedPlayerPosRot = *playerPosRot;
adjustedPlayerPosRot.pos.y += playerYOffset + roData->yOffset;
adjustedPlayerPosRot.rot.x = 0;
referencePosRot = *playerPosRot;
referencePosRot.pos.y += playerYOffset + roData->yOffset;
referencePosRot.rot.x = 0;
}
OLib_Vec3fDiffToVecGeo(&atEyeOffsetGeo, at, eye);
@ -6919,9 +6919,15 @@ s32 Camera_Special9(Camera* camera) {
case 0:
camera->stateFlags &= ~(CAM_STATE_1 | CAM_STATE_2);
camera->animState++;
rwData->targetYaw = ABS(playerPosRot->rot.y - adjustedPlayerPosRot.rot.y) >= 0x4000
? adjustedPlayerPosRot.rot.y - 0x7FFF
: adjustedPlayerPosRot.rot.y;
//! @bug The angle passed to ABS should be cast to s16.
//! The lack of a cast means that a door which has an angle of around 0x8000 will calculate an incorrect
//! angle and use an incorrect `targetYaw`.
//! In-game, this means if the player opens a susceptible door at a slanted angle, the camera will not
//! appear correctly on the other side after the player has walked through the door.
rwData->targetYaw = ABS(playerPosRot->rot.y - referencePosRot.rot.y) >= 0x4000
? referencePosRot.rot.y - 0x7FFF
: referencePosRot.rot.y;
FALLTHROUGH;
case 1:
doorParams->timer1--;