From 04c97b83505e685d590c28c7605128716f3333ff Mon Sep 17 00:00:00 2001
From: Jonathan Bradley <jcb@pikum.xyz>
Date: Wed, 6 Dec 2023 15:31:08 -0500
Subject: cameras can be rigstered

---
 src/camera.cpp | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)

(limited to 'src/camera.cpp')

diff --git a/src/camera.cpp b/src/camera.cpp
index d2c1b71..f5e1cfc 100644
--- a/src/camera.cpp
+++ b/src/camera.cpp
@@ -1,7 +1,11 @@
 
 #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),
@@ -11,3 +15,65 @@ PkeCamera NullCamera {
 };
 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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