checkpoint - add PkeLevel - editor removes on scene load

1 files changed, 91 insertions, 0 deletions

diff --git a/src/level.cpp b/src/level.cpp
new file mode 100644
index 0000000..fcca5bd
--- /dev/null
+++ b/src/level.cpp
@@ -0,0 +1,91 @@
+
+#include "level.hpp"
+
+#include "camera.hpp"
+#include "ecs.hpp"
+
+LevelHandle nextHandle = LevelHandle{0};
+long levelCount = 0;
+constexpr long LEVEL_NAME_LENGTH = 16;
+PkeLevel LEVELS[MAX_LEVEL_COUNT];
+
+PkeLevel *PkeLevel_Get_Inner(LevelHandle handle) {
+	for (long i = 0; i < MAX_LEVEL_COUNT; ++i) {
+		if (LEVELS[i].handle == handle) {
+			return &LEVELS[i];
+		}
+	}
+	return nullptr;
+}
+
+LevelHandle PkeLevel_Create(const char *levelName) {
+	assert(levelCount < MAX_LEVEL_COUNT && "only MAX_LEVEL_COUNT levels can be loaded at once");
+	levelCount += 1;
+
+	PkeLevel *lvl = PkeLevel_Get_Inner(LevelHandle_MAX);
+	assert(lvl != nullptr && "max level count not reached, but failed to find a valid level slot");
+
+	lvl->bkt = Pke_BeginTransientBucket();
+	lvl->handle = nextHandle;
+	++nextHandle;
+
+	auto len = strlen(levelName);
+	auto start = len <= (LEVEL_NAME_LENGTH - 1) ? 0 : len - (LEVEL_NAME_LENGTH - 1);
+	strncpy(lvl->name, levelName + start, LEVEL_NAME_LENGTH);
+	return lvl->handle;
+}
+
+PkeLevel *PkeLevel_Get(LevelHandle handle) {
+	return PkeLevel_Get_Inner(handle);
+}
+
+LevelHandle PkeLevel_GetHandle(const char *levelName) {
+	char safeName[LEVEL_NAME_LENGTH];
+	auto len = strlen(levelName);
+	auto start = len <= (LEVEL_NAME_LENGTH - 1) ? 0 : len - (LEVEL_NAME_LENGTH - 1);
+	strncpy(safeName, levelName + start, LEVEL_NAME_LENGTH);
+	for (long i = 0; i < MAX_LEVEL_COUNT; ++i) {
+		if (LEVELS[i].handle != LevelHandle_MAX) {
+			if (strcmp(safeName, LEVELS[i].name)) {
+				return LEVELS[i].handle;
+			}
+		}
+	}
+	return LevelHandle_MAX;
+}
+
+void PkeLevel_RegisterWrappingEntity(LevelHandle levelHandle, EntityHandle entityHandle) {
+	assert(levelHandle != LevelHandle_MAX);
+	assert(entityHandle != EntityHandle_MAX);
+	PkeLevel *lvl = PkeLevel_Get_Inner(levelHandle);
+	assert(lvl != nullptr && "Failed to find level by requested LevelHandle");
+	PkeArray_Add(&lvl->wrappingEntities, entityHandle, lvl->bkt);
+}
+
+void PkeLevel_RegisterCamera(LevelHandle levelHandle, CameraHandle cameraHandle) {
+	assert(levelHandle != LevelHandle_MAX);
+	assert(cameraHandle != CameraHandle_MAX);
+	PkeLevel *lvl = PkeLevel_Get_Inner(levelHandle);
+	assert(lvl != nullptr && "Failed to find level by requested LevelHandle");
+	PkeArray_Add(&lvl->cameras, cameraHandle, lvl->bkt);
+}
+
+void PkeLevel_Remove(LevelHandle handle) {
+	PkeLevel *lvl = PkeLevel_Get_Inner(handle);
+	assert(lvl != nullptr && "Failed to find level to remove by requested LevelHandle");
+	levelCount -= 1;
+	for (long i = 0; i < lvl->wrappingEntities.next; ++i) {
+		ECS_MarkForRemoval(lvl->wrappingEntities.data[i]);
+	}
+	for (long i = 0; i < lvl->cameras.next; ++i) {
+		PkeCamera_Destroy(lvl->cameras.data[i]);
+	}
+	PkeArray_HardReset<EntityHandle>(&lvl->wrappingEntities);
+	PkeArray_HardReset<CameraHandle>(&lvl->cameras);
+	Pke_EndTransientBucket(lvl->bkt);
+	lvl->bkt = CAFE_BABE(MemBucket);
+	lvl->handle = LevelHandle_MAX;
+	lvl->wrappingEntities.next = 0;
+	lvl->wrappingEntities.reserved = 0;
+	lvl->wrappingEntities.data = CAFE_BABE(EntityHandle);
+}