From b4e5a29119bf30685e96e9333ff4a1abd91f7366 Mon Sep 17 00:00:00 2001
From: Brandon Danyluk <brandondanyluk366@gmail.com>
Date: Sat, 1 May 2021 21:42:49 -0600
Subject: [PATCH] Add hellfire mid course guidance

---
 addons/hellfire/CfgAmmo.hpp                   | 17 +++++++++--
 addons/hellfire/XEH_PREP.hpp                  |  1 +
 .../functions/fnc_midCourseTransition.sqf     | 29 +++++++++++++++++++
 .../fnc_javelin_midCourseTransition.sqf       |  4 +--
 4 files changed, 47 insertions(+), 4 deletions(-)
 create mode 100644 addons/hellfire/functions/fnc_midCourseTransition.sqf

diff --git a/addons/hellfire/CfgAmmo.hpp b/addons/hellfire/CfgAmmo.hpp
index c3ee83e3a4..bd60c79e7f 100644
--- a/addons/hellfire/CfgAmmo.hpp
+++ b/addons/hellfire/CfgAmmo.hpp
@@ -38,8 +38,8 @@ class CfgAmmo {
             defaultSeekerLockMode = "LOAL";
             seekerLockModes[] = { "LOAL", "LOBL" };
 
-            defaultNavigationType = "ZeroEffortMiss";
-            navigationTypes[] = { "ZeroEffortMiss" };
+            defaultNavigationType = "Direct";
+            navigationTypes[] = { "Direct", "ZeroEffortMiss" };
 
             seekLastTargetPos = 1;      // seek last target position [if seeker loses LOS of target, continue to last known pos]
             seekerAngle = 70;           // Angle in front of the missile which can be searched
@@ -51,6 +51,19 @@ class CfgAmmo {
             // Attack profile type selection
             defaultAttackProfile = "hellfire";
             attackProfiles[] = {"hellfire", "hellfire_hi", "hellfire_lo"};
+
+            class navigationStates {
+                class initial {
+                    transitionCondition = QFUNC(midCourseTransition);
+                    navigationType = "Direct";
+                };
+                class terminal {
+                    transitionCondition = "";
+                    navigationType = "ZeroEffortMiss";
+                };
+                // transitions from initial -> termimal
+                states[] = {"initial", "terminal"};
+            };
         };
     };
     class ACE_Hellfire_AGM114N: ACE_Hellfire_AGM114K {
diff --git a/addons/hellfire/XEH_PREP.hpp b/addons/hellfire/XEH_PREP.hpp
index f30cf0bffd..011810aa04 100644
--- a/addons/hellfire/XEH_PREP.hpp
+++ b/addons/hellfire/XEH_PREP.hpp
@@ -2,3 +2,4 @@ LOG("prep");
 PREP(attackProfile);
 PREP(getAttackProfileSettings);
 PREP(setupVehicle);
+PREP(midCourseTransition);
diff --git a/addons/hellfire/functions/fnc_midCourseTransition.sqf b/addons/hellfire/functions/fnc_midCourseTransition.sqf
new file mode 100644
index 0000000000..1369e162b0
--- /dev/null
+++ b/addons/hellfire/functions/fnc_midCourseTransition.sqf
@@ -0,0 +1,29 @@
+#include "script_component.hpp"
+/*
+ * Author: Brandon (TCVM)
+ * Condition to switch to next navigation profile
+ *
+ * Arguments:
+ * Guidance Arg Array <ARRAY>
+ *
+ * Return Value:
+ * None
+ *
+ * Example:
+ * [] call ace_hellfire_fnc_midCourseTransition
+ *
+ * Public: No
+ */
+
+_args params ["_firedEH", "_launchParams", "_flightParams", "_seekerParams", "_stateParams", "_targetData", "_navigationStateData"];
+_firedEH params ["_shooter","","","","_ammo","","_projectile"];
+_launchParams params ["_shooter","_targetLaunchParams","_seekerType","_attackProfile","_lockMode","_laserInfo","_navigationType"];
+_targetLaunchParams params ["_target", "_targetPos", "_launchPos", "_launchDir", "_launchTime"];
+_flightParams params ["_pitchRate", "_yawRate", "_isBangBangGuidance"];
+_stateParams params ["_lastRunTime", "_seekerStateParams", "_attackProfileStateParams", "_lastKnownPosState","_navigationParams", "_guidanceParameters"];
+_seekerParams params ["_seekerAngle", "_seekerAccuracy", "_seekerMaxRange", "_seekerMinRange"];
+_targetData params ["_targetDirection", "_attackProfileDirection", "_targetRange", "_targetVelocity", "_targetAcceleration"];
+
+_attackProfileStateParams params ["_state"];
+_state in [STAGE_ATTACK_TERMINAL, STAGE_ATTACK_CRUISE];
+
diff --git a/addons/missileguidance/functions/fnc_javelin_midCourseTransition.sqf b/addons/missileguidance/functions/fnc_javelin_midCourseTransition.sqf
index 779ddecf21..531425b366 100644
--- a/addons/missileguidance/functions/fnc_javelin_midCourseTransition.sqf
+++ b/addons/missileguidance/functions/fnc_javelin_midCourseTransition.sqf
@@ -1,7 +1,7 @@
 #include "script_component.hpp"
 /*
  * Author: Brandon (TCVM)
- * Sets up IR state arrays (called from missileGuidance's onFired).
+ * Condition to switch to next navigation profile
  *
  * Arguments:
  * Guidance Arg Array <ARRAY>
@@ -10,7 +10,7 @@
  * None
  *
  * Example:
- * [] call ace_missileguidance_fnc_IR_onFired
+ * [] call ace_missileguidance_fnc_javelin_midCourseTransition
  *
  * Public: No
  */