/*
 * Author: NouberNou and esteldunedain
 * Render all action points
 *
 * Argument:
 * None
 *
 * Return value:
 * None
 *
 * Public: No
 */
#include "script_component.hpp"

GVAR(currentOptions) = [];

private _player = ACE_player;

private _cameraPosASL = AGLtoASL (positionCameraToWorld [0, 0, 0]);
private _cameraDir = (AGLtoASL (positionCameraToWorld [0, 0, 1])) vectorDiff _cameraPosASL;

private _fnc_renderNearbyActions = {
    // Render all nearby interaction menus
    #define MAXINTERACTOBJECTS 3

    GVAR(foundActions) = [];
    GVAR(lastTimeSearchedActions) = ACE_diagTime;

    private _numInteractObjects = 0;
    private _nearestObjects = nearestObjects [ACE_player, ["All"], 13];
    {
        private _target = _x;

        // Quick oclussion test. Skip objects more than 1 m behind the camera plane
        private _lambda = ((getPosASL _x) vectorDiff _cameraPosASL) vectorDotProduct _cameraDir;
        if ((_lambda > -1) && {!isObjectHidden _target}) then {
            private _numInteractions = 0;
            // Prevent interacting with yourself or your own vehicle
            if (_target != ACE_player && {_target != vehicle ACE_player}) then {

                // Iterate through object actions, find base level actions and render them if appropiate
                GVAR(objectActionList) = _target getVariable [QGVAR(actions), []];
                {
                    // Only render them directly if they are base level actions
                    if ((_x select 1) isEqualTo []) then {
                        // Try to render the menu
                        private _action = _x;
                        if ([_target, _action] call FUNC(renderBaseMenu)) then {
                            _numInteractions = _numInteractions + 1;
                            GVAR(foundActions) pushBack [_target, _action, GVAR(objectActionList)];
                        };
                    };
                    nil
                } count GVAR(objectActionList);

                // Iterate through base level class actions and render them if appropiate
                private _actionsVarName = format [QGVAR(Act_%1), typeOf _target];
                private _classActions = missionNamespace getVariable [_actionsVarName, []];
                {
                    private _action = _x;
                    // Try to render the menu
                    if ([_target, _action] call FUNC(renderBaseMenu)) then {
                        _numInteractions = _numInteractions + 1;
                        GVAR(foundActions) pushBack [_target, _action, GVAR(objectActionList)];
                    };
                    nil
                } count _classActions;

                // Limit the amount of objects the player can interact with
                if (_numInteractions > 0) then {
                    _numInteractObjects = _numInteractObjects + 1;
                };
            };
        };
        if (_numInteractObjects >= MAXINTERACTOBJECTS) exitWith {};

        nil
    } count _nearestObjects;
};

private _fnc_renderLastFrameActions = {
    {
        _x params ["_target", "_action", "_objectActionList"];

        GVAR(objectActionList) = _objectActionList;
        [_target, _action] call FUNC(renderBaseMenu);
        nil
    } count GVAR(foundActions);
};

private _fnc_renderSelfActions = {
    private _target = _this;

    // Set object actions for collectActiveActionTree
    GVAR(objectActionList) = _target getVariable [QGVAR(selfActions), []];

    // Iterate through base level class actions and render them if appropiate
    private _actionsVarName = format [QGVAR(SelfAct_%1), typeOf _target];
    private _classActions = missionNamespace getVariable [_actionsVarName, []];

    private _pos = if !(GVAR(useCursorMenu)) then {
        //Convert to ASL, add offset and then convert back to AGL (handles waves when over water)
        ASLtoAGL ((AGLtoASL (positionCameraToWorld [0, 0, 0])) vectorAdd GVAR(selfMenuOffset));
    } else {
        [0.5, 0.5]
    };

    {
        _action = _x;
        [_target, _action, _pos] call FUNC(renderBaseMenu);
        nil
    } count _classActions;
};

private _fnc_renderZeusActions = {
    {
        private _action = _x;
        [_this, _action, [0.5, 0.5]] call FUNC(renderBaseMenu);
        nil
    } count GVAR(ZeusActions);
};


GVAR(collectedActionPoints) resize 0;

// Render nearby actions, unit self actions or vehicle self actions as appropiate
if (GVAR(openedMenuType) == 0) then {
    if (isNull curatorCamera) then {
        if (vehicle ACE_player == ACE_player) then {
            if (ACE_diagTime > GVAR(lastTimeSearchedActions) + 0.20) then {
                // Once every 0.2 secs, collect nearby objects active and visible action points and render them
                call _fnc_renderNearbyActions;
            } else {
                // The rest of the frames just draw the same action points rendered the last frame
                call _fnc_renderLastFrameActions;
            };
        } else {
            // Render vehicle self actions when in vehicle
            (vehicle ACE_player) call _fnc_renderSelfActions;
        };
    } else {
        // Render zeus actions when zeus open
        (getAssignedCuratorLogic player) call _fnc_renderZeusActions;
    };
} else {
    ACE_player call _fnc_renderSelfActions;
};

if (count GVAR(collectedActionPoints) > 1) then {
    // Do the oclusion pass

    // Order action points according to z
    GVAR(collectedActionPoints) sort true;

    for [{private _i = count GVAR(collectedActionPoints) - 1}, {_i > 0}, {_i = _i - 1}] do {
        for [{private _j = _i - 1}, {_j >= 0}, {_j = _j - 1}] do {
            // Check if action point _i is ocluded by _j
            private _delta = vectorNormalized ((GVAR(collectedActionPoints) select _i select 1) vectorDiff (GVAR(collectedActionPoints) select _j select 1));

            // If _i is inside a cone with 20º half angle with origin on _j
            if (_delta select 2 > 0.94) exitWith {
                GVAR(collectedActionPoints) deleteAt _i;
            };
        };
    };
};

// Render the non-ocluded points
{
    _x params ["_z", "_sPos", "_activeActionTree"];
    [[], _activeActionTree, _sPos, [180,360]] call FUNC(renderMenu);
    nil
} count GVAR(collectedActionPoints);