Improve the targetting system and fix initial game starts

Author: Afforess

Makefile

@@ -1,5 +1,5 @@
 PACKAGE_NAME := Misanthrope
-VERSION_STRING := 0.4.0
+VERSION_STRING := 0.4.1
 
 OUTPUT_NAME := $(PACKAGE_NAME)_$(VERSION_STRING)
 OUTPUT_DIR := build/$(OUTPUT_NAME)

libs/biter/ai/attack_area.lua

@@ -30,7 +30,19 @@ AttackArea.stages.spawning = function(base, data)
 end
 
 AttackArea.stages.plan_attack = function(base, data)
-    local end_pos = Area.center(Chunk.to_area(base.target.chunk_pos))
+    local candidates = base.targets.candidates
+    if #candidates == 0 then
+        base.targets = nil
+        return 'fail'
+    end
+    local idx = math.random(#candidates)
+    local candidate = table.remove(candidates, idx)
+    Log("Attack candidate: %s", base, serpent.line(candidate))
+    if #candidates == 0 then
+        base.targets = nil
+    end
+
+    local end_pos = Area.center(Chunk.to_area(candidate.chunk_pos))
     local command = {type = defines.command.attack_area, destination = end_pos, radius = 16}
     local entities = table.filter(base.entities, Game.VALID_FILTER)
 
@@ -62,6 +74,9 @@ function AttackArea.tick(base, data)
 end
 
 function AttackArea.is_expired(base, data)
+    if data.stage == 'fail' or data.stage == 'success' then
+        return true
+    end
     return data.attack_group and (not data.attack_group.valid or game.tick > data.attack_tick + Time.MINUTE * 6)
 end
 

libs/biter/ai/identify_targets.lua

@@ -5,7 +5,7 @@ local Log = function(str, ...) BiterBase.LogAI("[IdentifyTargets] " .. str, ...)
 
 IdentifyTargets.stages.setup = function(base, data)
     local chunk_pos = Chunk.from_position(base.queen.position)
-    local search_area = Position.expand_to_area(chunk_pos, 15)
+    local search_area = Position.expand_to_area(chunk_pos, 20)
     data.start_chunk = chunk_pos
     data.search_queue = {}
     data.search_idx = 1
@@ -28,8 +28,8 @@ IdentifyTargets.stages.search = function(base, data)
     if chunk_data and chunk_data.player_value and chunk_data.player_value > 0 then
         local dist = Position.manhattan_distance(chunk_pos, data.start_chunk)
 
-        value = chunk_data.player_value / ((1 + dist) * (1 + dist))
-        table.insert(data.candidates, { chunk_pos = chunk_pos, data = chunk_data, value = value})
+        value = (chunk_data.player_value * chunk_data.player_value) / ((1 + dist) * (1 + dist))
+        table.insert(data.candidates, { chunk_pos = chunk_pos, value = value})
     end
 
     data.search_idx = data.search_idx + 1
@@ -46,15 +46,16 @@ IdentifyTargets.stages.sort = function(base, data)
     end)
 
     Log("All candidates: %s", base, serpent.block(data.candidates))
+    data.candidates = table.filter(data.candidates, function(candidate)
+        return candidate.value > 100
+    end)
+    if #data.candidates == 0 then
+        Log("No candidates, unable to identify any valuable targets.", base)
+        return 'fail'
+    end
+    Log("Filtered candidates: %s", base, serpent.block(data.candidates))
 
-    return 'decide'
-end
-
-IdentifyTargets.stages.decide = function(base, data)
-    local idx = math.random(#data.candidates)
-    local choosen_candidate = data.candidates[idx]
-    Log("Randomly chosen candidate was %s", base, serpent.line(choosen_candidate))
-    base.target = { type = 'player_value', chunk_pos = choosen_candidate.chunk_pos, tick = game.tick}
+    base.targets = { candidates = data.candidates, tick = game.tick }
     return 'success'
 end
 

libs/biter/base.lua

@@ -219,16 +219,13 @@ function BiterBase.create_plan(base)
     LogAI("Current Number of Worms in Base: %d", base, #base.worms)
 
     if base:can_afford('identify_targets') then
-        if not base.target then
+        if not base.targets then
             LogAI("No active targets, chooses AI plan to identify targets", base)
             BiterBase.set_active_plan(base, 'identify_targets')
             return true
         end
 
-        if not base.target.tick then
-            base.target.tick = game.tick
-        end
-        local age = game.tick - base.target.tick
+        local age = game.tick - base.targets.tick
         if math.random(200) < (age / Time.MINUTE) then
             LogAI("Recalculating targets, previous target is %s minutes old", base, serpent.line((age / Time.MINUTE)))
             BiterBase.set_active_plan(base, 'identify_targets')
@@ -256,7 +253,7 @@ function BiterBase.create_plan(base)
         return true
     end
 
-    if base:can_afford('attack_area') and base.target and base.target.type == 'player_value' then
+    if base:can_afford('attack_area') and base.targets then
         local active_chunk = BiterBase.is_in_active_chunk(base)
         if active_chunk then LogAI("Is in an active chunk: true", base) else LogAI("Is in an active chunk: false", base) end
 

libs/world.lua

@@ -5,24 +5,22 @@ require 'stdlib/surface'
 require 'libs/biter/base'
 
 World = {}
-World.version = 40
+World.version = 41
 World.Logger = Logger.new("Misanthrope", "world", DEBUG_MODE)
 local Log = function(str, ...) World.Logger.log(string.format(str, ...)) end
 
 function World.setup()
-    local mod_version = global.mod_version
     if not global.mod_version then
         -- goodbye fair world
         local old_global = global
         global = {}
-        global.mod_version = 40
-        mod_version = 0
+        global.mod_version = World.version
 
         Harpa.migrate(old_global)
         World.recalculate_chunk_values()
     end
-    if mod_version ~= global.mod_version then
-        World.migrate(mod_version, World.version)
+    if World.version ~= global.mod_version then
+        World.migrate(global.mod_version, World.version)
         global.mod_version = World.version
     end
 
@@ -43,6 +41,14 @@ function World.migrate(old_version, new_version)
                 end
             end
         end
+    elseif old_version < 41 then
+        for i = #global.bases, 1, -1 do
+            local base = global.bases[i]
+            base.target = nil
+        end
+        if global.overmind then
+            global.overmind.currency = 0
+        end
     end
 end
 
@@ -68,10 +74,11 @@ end
 
 Event.register(defines.events.on_player_created, World.resync_players)
 
-Event.register(Event.core_events.configuration_changed, function(event)
+Event.register({Event.core_events.init, Event.core_events.configuration_changed}, function(event)
     Log("Setting up world...")
-    Log("Mod data: %s" , serpent.line(event.data))
+    if event.data then
+        Log("Mod data: %s", serpent.line(event.data))
+    end
     World.setup()
-    Event.remove(defines.events.on_tick, event._handler)
     Log("World setup complete.")
 end)