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https://github.com/wesnoth/wesnoth
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903e03d68a
The main problem was that the previous calculation was based on the 'caution' aspect. While that is not technically wrong, caution is also used for other purposes and there are mainline (and presumably UMC) scenarios that use large values for caution. In those cases, units retreated that were barely injured. This, again, might even be desirable for some use cases, but it needs to be decoupled from the other uses of caution. Thus, the new 'retreat_factor' aspect is used now. In addition, the calculation is now based on a unit's maximum hitpoints, rather than its level.
54 lines
1.8 KiB
Lua
54 lines
1.8 KiB
Lua
------- Retreat CA --------------
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local AH = wesnoth.require "ai/lua/ai_helper.lua"
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local LS = wesnoth.require "location_set"
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local R = wesnoth.require "ai/lua/retreat.lua"
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local retreat_unit, retreat_loc
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local ca_retreat_injured = {}
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function ca_retreat_injured:evaluation(cfg, data, filter_own)
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local start_time, ca_name = wesnoth.get_time_stamp() / 1000., 'retreat_injured'
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if AH.print_eval() then AH.print_ts(' - Evaluating retreat_injured CA:') end
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if (ai.aspects.retreat_factor <= 0) then
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if AH.print_eval() then AH.done_eval_messages(start_time, ca_name) end
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return 0
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end
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local units = AH.get_units_with_moves({
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side = wesnoth.current.side,
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{ "and", filter_own }
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}, true)
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local avoid_map = LS.of_pairs(ai.aspects.avoid)
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local unit, loc = R.retreat_injured_units(units, avoid_map)
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if unit then
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retreat_unit = unit
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retreat_loc = loc
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-- First check if attacks are possible for any unit
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-- If one with > 50% chance of kill is possible, set return_value to lower than combat CA
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local attacks = ai.get_attacks()
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for i,a in ipairs(attacks) do
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if (#a.movements == 1) and (a.chance_to_kill > 0.5) then
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if AH.print_eval() then AH.done_eval_messages(start_time, ca_name) end
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return 95000
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end
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end
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if AH.print_eval() then AH.done_eval_messages(start_time, ca_name) end
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return 192000
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end
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if AH.print_eval() then AH.done_eval_messages(start_time, ca_name) end
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return 0
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end
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function ca_retreat_injured:execution(cfg, data)
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if AH.print_exec() then AH.print_ts(' Executing retreat_injured CA') end
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AH.robust_move_and_attack(ai, retreat_unit, retreat_loc)
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retreat_unit = nil
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retreat_loc = nil
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end
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return ca_retreat_injured
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