From e5cc00096e7b0700c75160c62f598a8af412c082 Mon Sep 17 00:00:00 2001
From: Justin Berger <j.david.berger@gmail.com>
Date: Fri, 16 Mar 2018 10:39:26 -0600
Subject: Refactored how the persistence (now called sensor_activations) worked

---
 include/libsurvive/poser.h         |  3 +--
 include/libsurvive/survive.h       | 34 ++++++++++++++++++++++++++++++++--
 include/libsurvive/survive_types.h |  2 ++
 3 files changed, 35 insertions(+), 4 deletions(-)

(limited to 'include')

diff --git a/include/libsurvive/poser.h b/include/libsurvive/poser.h
index eb0de3b..6c74c52 100644
--- a/include/libsurvive/poser.h
+++ b/include/libsurvive/poser.h
@@ -41,8 +41,7 @@ typedef struct
 	uint32_t timecode; //In object-local ticks.
 } PoserDataIMU;
 
-typedef struct
-{
+typedef struct PoserDataLight {
 	PoserData hdr;
 	int sensor_id;
 	int acode;			//OOTX Code associated with this sweep. bit 1 indicates vertical(1) or horizontal(0) sweep
diff --git a/include/libsurvive/survive.h b/include/libsurvive/survive.h
index 7a0ed1e..7a9ec64 100644
--- a/include/libsurvive/survive.h
+++ b/include/libsurvive/survive.h
@@ -1,14 +1,43 @@
 #ifndef _SURVIVE_H
 #define _SURVIVE_H
 
-#include <stdint.h>
-#include "survive_types.h"
 #include "poser.h"
+#include "survive_types.h"
+#include <stdbool.h>
+#include <stdint.h>
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+/**
+ * This struct encodes what the last effective angles seen on a sensor were, and when they occured.
+ */
+typedef struct {
+	FLT angles[SENSORS_PER_OBJECT][NUM_LIGHTHOUSES][2];		   // 2 Axes (Angles in LH space)
+	uint32_t timecode[SENSORS_PER_OBJECT][NUM_LIGHTHOUSES][2]; // Timecode per axis in ticks
+} SurviveSensorActivations;
+
+struct PoserDataLight;
+/**
+ * Adds a lightData packet to the table.
+ */
+void SurviveSensorActivations_add(SurviveSensorActivations *self, struct PoserDataLight *lightData);
+
+/**
+ * Returns true iff both angles for the given sensor and lighthouse were seen at most `tolerance` ticks before the given
+ * `timecode_now`.
+ */
+bool SurviveSensorActivations_isPairValid(const SurviveSensorActivations *self, uint32_t tolerance,
+										  uint32_t timecode_now, uint32_t sensor_idx, int lh);
+
+/**
+ * Default tolerance that gives a somewhat accuate representation of current state.
+ *
+ * Don't rely on this to be a given value.
+ */
+extern uint32_t SurviveSensorActivations_default_tolerance;
+
 //DANGER: This structure may be redefined.  Note that it is logically split into 64-bit chunks
 //for optimization on 32- and 64-bit systems.
 
@@ -70,6 +99,7 @@ struct SurviveObject
 
 	haptic_func haptic;
 
+	SurviveSensorActivations activations;
 	//Debug
 	int tsl;
 };
diff --git a/include/libsurvive/survive_types.h b/include/libsurvive/survive_types.h
index ce0baac..3c7dc7f 100644
--- a/include/libsurvive/survive_types.h
+++ b/include/libsurvive/survive_types.h
@@ -1,6 +1,8 @@
 #ifndef _SURVIVE_TYPES_H
 #define _SURVIVE_TYPES_H
 
+#include "stdint.h"
+
 #ifdef __cplusplus
 extern "C" {
 #endif
-- 
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