Function LookCamera

TombEngine/Game/camera.cpp:167–216

}

void LookCamera(ItemInfo& item, const CollisionInfo& coll)
{
	constexpr auto POS_LERP_ALPHA	 = 0.25f;
	constexpr auto COLL_PUSH		 = BLOCK(0.25f) - BLOCK(1 / 16.0f);
	constexpr auto LOOK_AT_DIST		 = BLOCK(0.5f);
	constexpr auto CAMERA_DIST_COEFF = 0.7f;
	constexpr auto CAMERA_DIST_MAX	 = BLOCK(0.75f);

	const auto& player = GetLaraInfo(item);

	int verticalOffset = GetLookCameraVerticalOffset(item, coll);
	auto pivotOffset = Vector3i(0, verticalOffset, 0);

	float idealDist = -std::max(Camera.targetDistance * CAMERA_DIST_COEFF, CAMERA_DIST_MAX);

	// Define absolute camera orientation.
	auto orient = player.Control.Look.Orientation +
		EulerAngles(item.Pose.Orientation.x, item.Pose.Orientation.y, 0) +
		EulerAngles(0, Camera.targetAngle, 0);
	orient.x = std::clamp(orient.x, LOOKCAM_ORIENT_CONSTRAINT.first.x, LOOKCAM_ORIENT_CONSTRAINT.second.x);

	// Determine base position.
	bool isInSwamp = TestEnvironment(ENV_FLAG_SWAMP, item.RoomNumber);
	auto basePos = Vector3i(
		item.Pose.Position.x,
		isInSwamp ? g_Level.Rooms[item.RoomNumber].TopHeight : item.Pose.Position.y,
		item.Pose.Position.z);

	// Define landmarks.
	auto pivotPos = Geometry::TranslatePoint(basePos, item.Pose.Orientation.y, pivotOffset);
	auto idealPos = Geometry::TranslatePoint(pivotPos, orient, idealDist);
	auto lookAtPos = Geometry::TranslatePoint(pivotPos, orient, LOOK_AT_DIST);

	// Determine best position.
	auto origin = GameVector(pivotPos, GetPointCollision(item, item.Pose.Orientation.y, pivotOffset.z, pivotOffset.y).GetRoomNumber());
	auto target = GameVector(idealPos, GetPointCollision(origin.ToVector3i(), origin.RoomNumber, orient.ToDirection(), idealDist).GetRoomNumber());

	// Handle room and object collisions.
	LOSAndReturnTarget(&origin, &target, 0);
	CameraCollisionBounds(&target, COLL_PUSH, true);
	ItemsCollideCamera();

	// Smoothly update camera position.
	MoveCamera(&target, Camera.speed);
	Camera.target = GameVector(Camera.target.ToVector3i() + (lookAtPos - Camera.target.ToVector3i()) * POS_LERP_ALPHA, item.RoomNumber);

	LookAt(&Camera, 0);
	UpdateMikePos(item);
	Camera.oldType = Camera.type;
}

void LookAt(CAMERA_INFO* cam, short roll)
{