Divergent/mods/iTheon New Tasks/gamedata/scripts/tasks_no_step_back.script

local house_smart_name = "lim_smart_terrain_5"
local bunkers_smart_name = "lim_smart_terrain_4"
-- This will mark the house, but it's not available when offline
local limansk_house_before_bridge = "lim_smart_terrain_5_surge_hide_a1"

local spawn_points = {{
    vector = vector():set(34.5144,1.0422,47.3793),
    lvid = 44759,
    gvid = 2475
},{
    vector = vector():set(19.2646,1.0424,47.2270),
    lvid = 36831,
    gvid = 2475
}}
local middle_of_battleground = vector():set(25.7198,-7.0140,1.8403)

local state = {
    killed_squads = 0,
    task_failed = false,
}
function save_state(mdata)
	mdata.no_step_back_task_data = state
end

function load_state(mdata)
	if mdata.no_step_back_task_data then
		state = mdata.no_step_back_task_data
	end
end

task_status_functor.no_step_back_task_status_functor = function(tsk,task_id)
	if not (db.actor and tsk) then return end
	local stage = tsk.stage
    local zone = db.zone_by_name[limansk_house_before_bridge]

	if (stage == 0) then
        if
            is_limansk()
            and zone
            and db.actor:position():distance_to(zone:position()) < 5
        then
            -- Spawn two squads at distant points
            spawn(1, spawn_points[1])
            spawn(2, spawn_points[2])
            dynamic_news_helper.send_tip(game.translate_string('no_step_back_on_position_message'), game.translate_string("cit_killers_merc_trader_stalker_name"), nil,nil, 'ui_inGame2_merc_trade', nil, 'npc')
            tsk.stage = 1
        end
    end

    if (stage == 1) then
        if not is_limansk() or db.actor:position():distance_to(middle_of_battleground) > 91 then return 'fail' end

        if state.killed_squads == 10 then
            -- Delay the message to make it more natural
            CreateTimeEvent(0,"no_step_back_defended_position_message",2, function ()
                dynamic_news_helper.send_tip(game.translate_string('no_step_back_defended_position_message'), game.translate_string("cit_killers_merc_trader_stalker_name"), nil,nil, 'ui_inGame2_merc_trade', nil, 'npc')
                return true
            end)
            tsk.stage = 2
        end
    end
end

task_functor.no_step_back_task_target_functor = function(task_id,field,p,tsk)
	if not (db.actor and tsk) then return nil end
	local stage = tsk.stage
    local zone = db.zone_by_name[limansk_house_before_bridge]

    if tsk.stage == 0 then
        if is_limansk() and zone then
            return zone:id()
        end
    end
    -- Do not show markers on squad members to not spoil the fun - they'll rush the target anyway
    if (stage == 2) then
        return tsk.task_giver_id
    end
end

xr_effects.no_step_back_cleanup = function()
    state = {
        killed_squads = 0,
        task_failed = false,
    }
end

xr_effects.no_step_back_fail_message = function ()
    state.task_failed = true
    dynamic_news_helper.send_tip(game.translate_string('no_step_back_run_fail_message'), game.translate_string("cit_killers_merc_trader_stalker_name"), nil,nil, 'ui_inGame2_merc_trade', nil, 'npc')
end

local house_smart_name = "lim_smart_terrain_5"
local bunkers_smart_name = "lim_smart_terrain_4"
-- At first I wanted to purge the squads that are staying on point, but that doesn't make sense, as new ones might come anyway
-- Spawning advanced mono squads instead that'll target the respective smarts
xr_effects.no_step_back_init = function()
    local house_smart = SIMBOARD:get_smart_by_name(house_smart_name)
    local bunkers_smart = SIMBOARD:get_smart_by_name(bunkers_smart_name)

    SIMBOARD:create_squad(house_smart, "monolith_defence_squad_advanced_init_spawn_house")
    SIMBOARD:create_squad(bunkers_smart, "monolith_defence_squad_advanced_init_spawn_bunkers")
end

-- Leaving it out of persistent state, as it's not that important on reloads
local last_spawn_point = nil
xr_effects.on_no_step_back_squad_death = function()
    state.killed_squads = state.killed_squads + 1
    if state.killed_squads <= 8 and not state.task_failed then
        local next_spawn_index = last_spawn_point == 1 and 2 or 1
        spawn(next_spawn_index, spawn_points[next_spawn_index])
    end
end

function is_limansk()
    return level.name() == "l10_limansk"
end

function spawn(index, spawn_config)
    local squad_section
    -- Will spawn 5 squads as novice
    if state.killed_squads < 4 then
        squad_section = "monolith_defence_squad_novice"
    -- 2 as advanced
    elseif state.killed_squads < 6 then
        squad_section = "monolith_defence_squad_advanced"
    -- 2 as veteran
    elseif state.killed_squads < 8 then
        squad_section = "monolith_defence_squad_veteran"
    -- and one as alpha
    else
        squad_section = "monolith_defence_squad_alpha"
    end
    last_spawn_point = index
    local se_id = new_tasks_addon_tasks_utils.spawn_at_position(squad_section, spawn_config.vector, spawn_config.lvid, spawn_config.gvid, true)
    alife_object(se_id).rush_to_target = true
end

function on_game_start()
	RegisterScriptCallback("save_state",save_state)
	RegisterScriptCallback("load_state",load_state)
end