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#include "camera.hpp"
#include "memory.hpp"
TypeSafeInt_B(CameraHandle);
PkeCamera NullCamera {
.handle = CameraHandle_MAX,
.pos = glm::vec3(3.f, 3.f, 3.f),
.rot = glm::quat(1.f, 0.f, 0.f, 0.f),
.target = glm::vec3(0.f),
.type = PKE_CAMERA_TYPE_ORTHOGONAL,
.orientation = PKE_CAMERA_ORIENTATION_TARGET,
.stale = PKE_CAMERA_STALE_ALL,
};
PkeCamera *ActiveCamera = &NullCamera;
const long MAX_CAMERAS_PER_BUCKET = 32;
struct CameraBucket {
PkeCamera cameras[MAX_CAMERAS_PER_BUCKET];
};
BucketContainer<CameraBucket, CameraHandle_T> Camera_BucketContainer{};
PkeCamera &PkeCamera_Register() {
bool moved = false;
CameraHandle activeHandle = ActiveCamera->handle;
CameraHandle_T cameraHandle_T{Buckets_NewHandle<CameraBucket>(MAX_CAMERAS_PER_BUCKET, Camera_BucketContainer, moved)};
if (moved) {
ActiveCamera = PkeCamera_Get(activeHandle);
}
auto b = Buckets_GetBucketIndex(cameraHandle_T);
auto c = Buckets_GetItemIndex(cameraHandle_T);
auto &cam = Camera_BucketContainer.buckets[b].cameras[c];
cam.handle = CameraHandle{cameraHandle_T};
return cam;
}
PkeCamera *PkeCamera_Get(CameraHandle cameraHandle) {
CameraHandle_T cameraHandle_T = static_cast<CameraHandle_T>(cameraHandle);
auto b = Buckets_GetBucketIndex(cameraHandle_T);
auto c = Buckets_GetItemIndex(cameraHandle_T);
return &Camera_BucketContainer.buckets[b].cameras[c];
}
void PkeCamera_Destroy(CameraHandle cameraHandle) {
CameraHandle_T cameraHandle_T = static_cast<CameraHandle_T>(cameraHandle);
auto b = Buckets_GetBucketIndex(cameraHandle_T);
auto c = Buckets_GetItemIndex(cameraHandle_T);
auto &cam = Camera_BucketContainer.buckets[b].cameras[c];
cam.handle = CameraHandle_MAX;
cam.pos = glm::vec3(0);
cam.rot = glm::quat{};
cam.target = glm::vec3(0);
cam.type = PkeCameraType_MAX;
cam.orientation = PkeCameraOrientation_MAX;
cam.stale = PkeCameraStaleFlags_MAX;
}
int64_t PkeCamera_GetBucketCount() {
return Camera_BucketContainer.bucketCounter + 1;
}
PkeCamera *PkeCamera_GetCameras(int64_t bucketIndex, int64_t &count) {
if (Camera_BucketContainer.bucketCounter == bucketIndex) {
count = Camera_BucketContainer.itemCounter >> 32;
} else {
count = MAX_CAMERAS_PER_BUCKET;
}
return Camera_BucketContainer.buckets[bucketIndex].cameras;
}
void PkeCamera_Init() {
Buckets_Init(Camera_BucketContainer);
}
void PkeCamera_Teardown() {
Buckets_Destroy(Camera_BucketContainer);
}
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