Added stone void chest that sends stone to surface

map_gen/Diggy/Config.lua

@@ -173,14 +173,24 @@ local Config = {
             stone_to_surface_amount = 50,
             currency_item = 'stone',
 
+            -- locations where chests will be automatically cleared from currency_item
+            void_chest_tiles = {
+                {x = -1, y = 5}, {x = 0, y = 5}, {x = 1, y = 5},
+            },
+
+            -- every x ticks it will clear y currency_item
+            void_chest_frequency = 300,
+
             unlockables = {
                 {stone = 50, type = 'buff', prototype = {name = 'mining_speed', value = 10}},
                 {stone = 50, type = 'buff', prototype = {name = 'inventory_slot', value = 3}},
                 {stone = 50, type = 'market', prototype = {price = 50, name = 'raw-fish'}},
                 {stone = 50, type = 'market', prototype = {price = 175, name = 'steel-axe'}},
+                {stone = 50, type = 'buff', prototype = {name = 'stone_automation', value = 10}},
 
                 {stone = 250, type = 'buff', prototype = {name = 'mining_speed', value = 5}},
                 {stone = 250, type = 'buff', prototype = {name = 'inventory_slot', value = 2}},
+                {stone = 250, type = 'buff', prototype = {name = 'stone_automation', value = 5}},
                 {stone = 250, type = 'market', prototype = {price = 50, name = 'small-electric-pole'}},
                 {stone = 250, type = 'market', prototype = {price = 50, name = 'small-lamp'}},
                 {stone = 250, type = 'market', prototype = {price = 25, name = 'stone-brick'}},
@@ -188,99 +198,148 @@ local Config = {
 
                 {stone = 450, type = 'buff', prototype = {name = 'mining_speed', value = 5}},
                 {stone = 450, type = 'buff', prototype = {name = 'inventory_slot', value = 2}},
+                {stone = 450, type = 'buff', prototype = {name = 'stone_automation', value = 5}},
                 {stone = 450, type = 'market', prototype = {price = 850, name = 'submachine-gun'}},
                 {stone = 450, type = 'market', prototype = {price = 50, name = 'firearm-magazine'}},
                 {stone = 450, type = 'market', prototype = {price = 500, name = 'light-armor'}},
 
                 {stone = 750, type = 'buff', prototype = {name = 'mining_speed', value = 5}},
                 {stone = 750, type = 'buff', prototype = {name = 'inventory_slot', value = 1}},
+                {stone = 750, type = 'buff', prototype = {name = 'stone_automation', value = 5}},
+
                 {stone = 1250, type = 'buff', prototype = {name = 'mining_speed', value = 5}},
                 {stone = 1250, type = 'buff', prototype = {name = 'inventory_slot', value = 1}},
+                {stone = 1250, type = 'buff', prototype = {name = 'stone_automation', value = 2}},
+
                 {stone = 1750, type = 'buff', prototype = {name = 'mining_speed', value = 5}},
                 {stone = 1750, type = 'buff', prototype = {name = 'inventory_slot', value = 1}},
+                {stone = 1750, type = 'buff', prototype = {name = 'stone_automation', value = 2}},
+
                 {stone = 2500, type = 'buff', prototype = {name = 'mining_speed', value = 5}},
                 {stone = 2500, type = 'buff', prototype = {name = 'inventory_slot', value = 1}},
+                {stone = 2500, type = 'buff', prototype = {name = 'stone_automation', value = 2}},
+
                 {stone = 4000, type = 'buff', prototype = {name = 'mining_speed', value = 5}},
                 {stone = 4000, type = 'buff', prototype = {name = 'inventory_slot', value = 1}},
+                {stone = 4000, type = 'buff', prototype = {name = 'stone_automation', value = 2}},
+
                 {stone = 6500, type = 'buff', prototype = {name = 'mining_speed', value = 5}},
                 {stone = 6500, type = 'buff', prototype = {name = 'inventory_slot', value = 1}},
+                {stone = 6500, type = 'buff', prototype = {name = 'stone_automation', value = 2}},
+
                 {stone = 8000, type = 'buff', prototype = {name = 'mining_speed', value = 5}},
                 {stone = 8000, type = 'buff', prototype = {name = 'inventory_slot', value = 1}},
+                {stone = 8000, type = 'buff', prototype = {name = 'stone_automation', value = 2}},
 
                 {stone = 10000, type = 'buff', prototype = {name = 'mining_speed', value = 5}},
                 {stone = 10000, type = 'buff', prototype = {name = 'inventory_slot', value = 1}},
+                {stone = 10000, type = 'buff', prototype = {name = 'stone_automation', value = 2}},
                 {stone = 10000, type = 'market', prototype = {price = 750, name = 'heavy-armor'}},
 
                 {stone = 15000, type = 'buff', prototype = {name = 'mining_speed', value = 2}},
                 {stone = 15000, type = 'buff', prototype = {name = 'inventory_slot', value = 1}},
                 {stone = 25000, type = 'buff', prototype = {name = 'mining_speed', value = 2}},
+                {stone = 25000, type = 'buff', prototype = {name = 'stone_automation', value = 2}},
                 {stone = 25000, type = 'buff', prototype = {name = 'inventory_slot', value = 1}},
 
                 {stone = 35000, type = 'buff', prototype = {name = 'mining_speed', value = 2}},
                 {stone = 35000, type = 'buff', prototype = {name = 'inventory_slot', value = 1}},
+                {stone = 35000, type = 'buff', prototype = {name = 'stone_automation', value = 2}},
                 {stone = 35000, type = 'market', prototype = {price = 100, name = 'piercing-rounds-magazine'}},
                 {stone = 35000, type = 'market', prototype = {price = 1500, name = 'modular-armor'}},
 
                 {stone = 50000, type = 'buff', prototype = {name = 'mining_speed', value = 2}},
                 {stone = 50000, type = 'buff', prototype = {name = 'inventory_slot', value = 1}},
+                {stone = 50000, type = 'buff', prototype = {name = 'stone_automation', value = 2}},
 
                 {stone = 75000, type = 'buff', prototype = {name = 'mining_speed', value = 2}},
                 {stone = 75000, type = 'buff', prototype = {name = 'inventory_slot', value = 1}},
+                {stone = 75000, type = 'buff', prototype = {name = 'stone_automation', value = 2}},
 
                 {stone = 100000, type = 'buff', prototype = {name = 'mining_speed', value = 2}},
                 {stone = 100000, type = 'buff', prototype = {name = 'inventory_slot', value = 1}},
+                {stone = 100000, type = 'buff', prototype = {name = 'stone_automation', value = 2}},
 
                 {stone = 125000, type = 'buff', prototype = {name = 'mining_speed', value = 2}},
                 {stone = 125000, type = 'buff', prototype = {name = 'inventory_slot', value = 1}},
+                {stone = 125000, type = 'buff', prototype = {name = 'stone_automation', value = 2}},
 
                 {stone = 150000, type = 'buff', prototype = {name = 'mining_speed', value = 2}},
                 {stone = 150000, type = 'buff', prototype = {name = 'inventory_slot', value = 1}},
+                {stone = 150000, type = 'buff', prototype = {name = 'stone_automation', value = 2}},
 
                 {stone = 175000, type = 'buff', prototype = {name = 'mining_speed', value = 2}},
                 {stone = 175000, type = 'buff', prototype = {name = 'inventory_slot', value = 1}},
+                {stone = 175000, type = 'buff', prototype = {name = 'stone_automation', value = 2}},
 
                 {stone = 200000, type = 'buff', prototype = {name = 'mining_speed', value = 2}},
                 {stone = 200000, type = 'buff', prototype = {name = 'inventory_slot', value = 1}},
+                {stone = 200000, type = 'buff', prototype = {name = 'stone_automation', value = 2}},
 
                 {stone = 225000, type = 'buff', prototype = {name = 'mining_speed', value = 2}},
                 {stone = 225000, type = 'buff', prototype = {name = 'inventory_slot', value = 1}},
+                {stone = 225000, type = 'buff', prototype = {name = 'stone_automation', value = 2}},
 
                 {stone = 250000, type = 'buff', prototype = {name = 'mining_speed', value = 2}},
                 {stone = 250000, type = 'buff', prototype = {name = 'inventory_slot', value = 1}},
+                {stone = 250000, type = 'buff', prototype = {name = 'stone_automation', value = 2}},
 
                 {stone = 275000, type = 'buff', prototype = {name = 'mining_speed', value = 2}},
                 {stone = 275000, type = 'buff', prototype = {name = 'inventory_slot', value = 1}},
+                {stone = 275000, type = 'buff', prototype = {name = 'stone_automation', value = 2}},
 
                 {stone = 300000, type = 'buff', prototype = {name = 'mining_speed', value = 2}},
                 {stone = 300000, type = 'buff', prototype = {name = 'inventory_slot', value = 1}},
+                {stone = 300000, type = 'buff', prototype = {name = 'stone_automation', value = 2}},
 
                 {stone = 350000, type = 'buff', prototype = {name = 'mining_speed', value = 2}},
                 {stone = 350000, type = 'buff', prototype = {name = 'inventory_slot', value = 1}},
+                {stone = 2500, type = 'buff', prototype = {name = 'stone_automation', value = 2}},
 
                 {stone = 400000, type = 'buff', prototype = {name = 'mining_speed', value = 2}},
                 {stone = 400000, type = 'buff', prototype = {name = 'inventory_slot', value = 1}},
+                {stone = 400000, type = 'buff', prototype = {name = 'stone_automation', value = 2}},
 
                 {stone = 500000, type = 'buff', prototype = {name = 'mining_speed', value = 2}},
                 {stone = 500000, type = 'buff', prototype = {name = 'inventory_slot', value = 1}},
+                {stone = 500000, type = 'buff', prototype = {name = 'stone_automation', value = 2}},
 
                 {stone = 600000, type = 'buff', prototype = {name = 'mining_speed', value = 2}},
                 {stone = 600000, type = 'buff', prototype = {name = 'inventory_slot', value = 1}},
+                {stone = 600000, type = 'buff', prototype = {name = 'stone_automation', value = 2}},
 
                 {stone = 700000, type = 'buff', prototype = {name = 'mining_speed', value = 2}},
                 {stone = 700000, type = 'buff', prototype = {name = 'inventory_slot', value = 1}},
+                {stone = 700000, type = 'buff', prototype = {name = 'stone_automation', value = 2}},
 
                 {stone = 800000, type = 'buff', prototype = {name = 'mining_speed', value = 2}},
                 {stone = 800000, type = 'buff', prototype = {name = 'inventory_slot', value = 1}},
+                {stone = 800000, type = 'buff', prototype = {name = 'stone_automation', value = 2}},
                 {stone = 800000, type = 'market', prototype = {price = 250, name = 'uranium-rounds-magazine'}},
 
                 {stone = 900000, type = 'buff', prototype = {name = 'mining_speed', value = 2}},
+                {stone = 900000, type = 'buff', prototype = {name = 'stone_automation', value = 2}},
+
                 {stone = 1000000, type = 'buff', prototype = {name = 'mining_speed', value = 2}},
+                {stone = 1000000, type = 'buff', prototype = {name = 'stone_automation', value = 2}},
+
                 {stone = 1250000, type = 'buff', prototype = {name = 'mining_speed', value = 2}},
+                {stone = 1250000, type = 'buff', prototype = {name = 'stone_automation', value = 2}},
+
                 {stone = 1500000, type = 'buff', prototype = {name = 'mining_speed', value = 2}},
+                {stone = 1500000, type = 'buff', prototype = {name = 'stone_automation', value = 2}},
+
                 {stone = 1750000, type = 'buff', prototype = {name = 'mining_speed', value = 2}},
+                {stone = 1750000, type = 'buff', prototype = {name = 'stone_automation', value = 2}},
+
                 {stone = 2000000, type = 'buff', prototype = {name = 'mining_speed', value = 2}},
+                {stone = 2000000, type = 'buff', prototype = {name = 'stone_automation', value = 2}},
+
                 {stone = 2500000, type = 'buff', prototype = {name = 'mining_speed', value = 2}},
+                {stone = 2500000, type = 'buff', prototype = {name = 'stone_automation', value = 2}},
+
                 {stone = 3000000, type = 'buff', prototype = {name = 'mining_speed', value = 2}},
+                {stone = 3000000, type = 'buff', prototype = {name = 'stone_automation', value = 2}},
             },
         },
     },

map_gen/Diggy/Debug.lua

@@ -78,9 +78,9 @@ end
     @param position Position {x, y}
 ]]
 function Debug.print_grid_value(value, surface, position, scale, offset)
-    local scale = scale or 1
+    scale = scale or 1
-    local offset = offset or 0
+    offset = offset or 0
-    local position = {x = position.x + offset, y = position.y + offset}
+    position = {x = position.x + offset, y = position.y + offset}
     local r = max(1, value) / scale
     local g = 1 - abs(value) / scale
     local b = min(1, value) / scale

map_gen/Diggy/Feature/MarketExchange.lua

@@ -10,6 +10,7 @@ local Gui = require 'utils.gui'
 local Debug = require 'map_gen.Diggy.Debug'
 local Template = require 'map_gen.Diggy.Template'
 local Global = require 'utils.global'
+local insert = table.insert
 
 -- this
 local MarketExchange = {}
@@ -17,15 +18,23 @@ local MarketExchange = {}
 local config = {}
 
 local stone_tracker = {
-    first_time_market_item = nil,
     stone_sent_to_surface = 0,
     previous_stone_sent_to_surface = 0,
 }
+
+local stone_collecting = {
+    initial_value = 0,
+    active_modifier = 0,
+    research_modifier = 0,
+    market_modifier = 0,
+}
+
 local mining_efficiency = {
     active_modifier = 0,
     research_modifier = 0,
     market_modifier = 0,
 }
+
 local inventory_slots = {
     active_modifier = 0,
     research_modifier = 0,
@@ -33,17 +42,31 @@ local inventory_slots = {
 }
 
 Global.register({
+    stone_collecting = stone_collecting,
     stone_tracker = stone_tracker,
     mining_efficiency = mining_efficiency,
     inventory_slots = inventory_slots,
 }, function(tbl)
+    stone_collecting = tbl.stone_collecting
     stone_tracker = tbl.stone_tracker
     mining_efficiency = tbl.mining_efficiency
     inventory_slots = tbl.inventory_slots
 end)
 
+local function send_stone_to_surface(total)
+    stone_tracker.previous_stone_sent_to_surface = stone_tracker.stone_sent_to_surface
+    stone_tracker.stone_sent_to_surface = stone_tracker.stone_sent_to_surface + total
+end
+
 local on_market_timeout_finished = Token.register(function(params)
     Template.market(params.surface, params.position, params.player_force, params.currency_item, {})
+
+    local tiles = {}
+    for _, position in pairs(params.void_chest_tiles) do
+        insert(tiles, {name = 'tutorial-grid', position = position})
+    end
+
+    params.surface.set_tiles(tiles)
 end)
 
 local function update_mining_speed(force)
@@ -68,37 +91,58 @@ local function update_inventory_slots(force)
     force.character_inventory_slots_bonus = old_modifier + inventory_slots.active_modifier
 end
 
+local function update_stone_collecting()
+    -- remove the current buff
+    local old_modifier = stone_collecting.initial_value - stone_collecting.active_modifier
+
+    -- update the active modifier
+    stone_collecting.active_modifier = stone_collecting.research_modifier + stone_collecting.market_modifier
+
+    -- add the new active modifier to the non-buffed modifier
+    stone_collecting.initial_value = old_modifier + stone_collecting.active_modifier
+end
+
 local function update_market_contents(market)
+    if (stone_tracker.previous_stone_sent_to_surface == stone_tracker.stone_sent_to_surface) then
+        return
+    end
+
     local should_update_mining_speed = false
     local should_update_inventory_slots = false
-
+    local should_update_stone_collecting = false
-    if (nil ~= stone_tracker.first_time_market_item) then
+    local add_market_item
-        market.add_market_item(stone_tracker.first_time_market_item)
+    local print = game.print
-        stone_tracker.first_time_market_item = nil
-    end
 
     for _, unlockable in pairs(config.unlockables) do
         local is_in_range = unlockable.stone > stone_tracker.previous_stone_sent_to_surface and unlockable.stone <= stone_tracker.stone_sent_to_surface
 
         -- only add the item to the market if it's between the old and new stone range
         if (is_in_range and unlockable.type == 'market') then
+            add_market_item = add_market_item or market.add_market_item
+
             local name = unlockable.prototype.name
             local price = unlockable.prototype.price
-            game.print('Mining Foreman: New wares at the market! Come get your ' .. name .. ' for only ' .. price .. ' ' .. config.currency_item .. '!')
+            print('Mining Foreman: New wares at the market! Come get your ' .. name .. ' for only ' .. price .. ' ' .. config.currency_item .. '!')
-            market.add_market_item({
+
+            add_market_item({
                 price = {{config.currency_item, price}},
                 offer = {type = 'give-item', item = name, count = 1}
             })
         elseif (is_in_range and unlockable.type == 'buff' and unlockable.prototype.name == 'mining_speed') then
             local value = unlockable.prototype.value
-            game.print('Mining Foreman: Increased mining speed by ' .. value .. '%!')
+            print('Mining Foreman: Increased mining speed by ' .. value .. '%!')
             should_update_mining_speed = true
             mining_efficiency.market_modifier = mining_efficiency.market_modifier + (value / 100)
         elseif (is_in_range and unlockable.type == 'buff' and unlockable.prototype.name == 'inventory_slot') then
             local value = unlockable.prototype.value
-            game.print('Mining Foreman: Increased inventory slots by ' .. value .. '!')
+            print('Mining Foreman: Increased inventory slots by ' .. value .. '!')
             should_update_inventory_slots = true
             inventory_slots.market_modifier = inventory_slots.market_modifier + value
+        elseif (is_in_range and unlockable.type == 'buff' and unlockable.prototype.name == 'stone_automation') then
+            local value = unlockable.prototype.value
+            print('Mining Foreman: sending stone to the surface automatically is now increased by ' .. value .. '!')
+            should_update_stone_collecting = true
+            stone_collecting.market_modifier = stone_collecting.market_modifier + value
         end
     end
 
@@ -113,6 +157,10 @@ local function update_market_contents(market)
         force = force or game.forces.player
         update_inventory_slots(force)
     end
+
+    if (should_update_stone_collecting) then
+        update_stone_collecting()
+    end
 end
 
 local function on_research_finished(event)
@@ -126,20 +174,24 @@ local function on_research_finished(event)
     end
 
     mining_efficiency.research_modifier = new_modifier
-    inventory_slots.research_modifier = (force.mining_drill_productivity_bonus / 2) * 100
+    inventory_slots.research_modifier = force.mining_drill_productivity_bonus * 50 -- 1 per level
+    stone_collecting.research_modifier = force.mining_drill_productivity_bonus * 1250 -- 25 per level
 
     update_inventory_slots(force)
     update_mining_speed(force)
+    update_stone_collecting()
 end
 
 local function redraw_title(data)
-    data.frame.caption = stone_tracker.stone_sent_to_surface .. ' stone sent to the surface'
+    data.frame.caption = stone_tracker.stone_sent_to_surface .. ' ' .. config.currency_item .. ' sent to the surface'
 end
 
 local function redraw_list(data)
     local market_scroll_pane = data.market_scroll_pane
     Gui.clear(market_scroll_pane)
 
+    local add = market_scroll_pane.add
+
     for _, unlockable in pairs(config.unlockables) do
         local is_unlocked = unlockable.stone <= stone_tracker.stone_sent_to_surface
         local message
@@ -150,13 +202,15 @@ local function redraw_list(data)
             message = 'Manual mining speed: +' .. unlockable.prototype.value .. '%'
         elseif (unlockable.type == 'buff' and unlockable.prototype.name == 'inventory_slot') then
             message = 'Inventory slot: +' .. unlockable.prototype.value
+        elseif (unlockable.type == 'buff' and unlockable.prototype.name == 'stone_automation') then
+            message = 'Automate stone to surface: +' .. unlockable.prototype.value
         else
             Debug.print('failed getting a message for: ' .. serpent.line(unlockable))
         end
 
         message = unlockable.stone .. ' stone: ' .. message
 
-        local label = market_scroll_pane.add({type = 'label', caption = message})
+        local label = add({type = 'label', caption = message})
         if (is_unlocked) then
             label.style.font_color = {r = 1, g = 1, b = 1}
         else
@@ -170,26 +224,22 @@ local function on_market_item_purchased(event)
         return
     end
 
-    stone_tracker.previous_stone_sent_to_surface = stone_tracker.stone_sent_to_surface
+    send_stone_to_surface(config.stone_to_surface_amount * event.count)
-    stone_tracker.stone_sent_to_surface = stone_tracker.stone_sent_to_surface + (config.stone_to_surface_amount * event.count)
-
     update_market_contents(event.market)
-
-    local frame = game.players[event.player_index].gui.center['Diggy.MarketExchange.Frame']
-
-    if frame and frame.valid then
-        local data = Gui.get_data(frame)
-        redraw_title(data)
-        redraw_list(data)
-    end
 end
 
 local function on_placed_entity(event)
-    if ('market' ~= event.entity.name) then
+    local market = event.entity
+    if ('market' ~= market.name) then
         return
     end
 
-    update_market_contents(event.entity)
+    market.add_market_item({
+        price = {{config.currency_item, 50}},
+        offer = {type = 'nothing', effect_description = 'Send ' .. config.stone_to_surface_amount .. ' ' .. config.currency_item .. ' to the surface'}
+    })
+
+    update_market_contents(market)
 end
 
 function MarketExchange.get_extra_map_info(config)
@@ -245,6 +295,7 @@ function MarketExchange.on_init()
         position = config.market_spawn_position,
         player_force = game.forces.player,
         currency_item = config.currency_item,
+        void_chest_tiles = config.void_chest_tiles,
     })
 
     update_mining_speed(game.forces.player)
@@ -256,15 +307,74 @@ end
 function MarketExchange.register(cfg)
     config = cfg
 
-    stone_tracker.first_time_market_item = {
-        price = {{config.currency_item, 50}},
-        offer = {type = 'nothing', effect_description = 'Send ' .. config.stone_to_surface_amount .. ' stone to the surface'}
-    }
-
     Event.add(defines.events.on_research_finished, on_research_finished)
     Event.add(defines.events.on_market_item_purchased, on_market_item_purchased)
     Event.add(Template.events.on_placed_entity, on_placed_entity)
     Event.add(defines.events.on_player_created, on_player_created)
+
+    local x_min
+    local y_min
+    local x_max
+    local y_max
+
+    for _, position in pairs(config.void_chest_tiles) do
+        local x = position.x
+        local y = position.y
+
+        if (nil == x_min or x < x_min) then
+            x_min = x
+        end
+
+        if (nil == x_max or x > x_max) then
+            x_max = x
+        end
+
+        if (nil == y_min or y < y_min) then
+            y_min = y
+        end
+
+        if (nil == y_max or y > y_max) then
+            y_max = y
+        end
+    end
+
+    local area = {{x_min, y_min}, {x_max + 1, y_max + 1}}
+
+    Event.on_nth_tick(config.void_chest_frequency, function ()
+        local send_to_surface = 0
+        local find_entities_filtered = game.surfaces.nauvis.find_entities_filtered
+        local chests = find_entities_filtered({area = area, type = {'container', 'logistics-container'}})
+        local to_fetch = stone_collecting.active_modifier
+
+        for _, chest in pairs(chests) do
+            local chest_contents = chest.get_inventory(defines.inventory.chest)
+            local stone_in_chest = chest_contents.get_item_count(config.currency_item)
+            local delta = to_fetch
+
+            if (stone_in_chest < delta) then
+                delta = stone_in_chest
+            end
+
+            if (delta > 0) then
+                chest_contents.remove({name = config.currency_item, count = delta})
+                send_to_surface = send_to_surface + delta
+            end
+        end
+
+        if (send_to_surface == 0) then
+            return
+        end
+
+        local markets = find_entities_filtered({name = 'market', position = config.market_spawn_position, limit = 1})
+
+        if (#markets == 0) then
+            Debug.printPosition(config.market_spawn_position, 'Unable to find a market')
+            return
+        end
+
+        send_stone_to_surface(send_to_surface)
+        update_market_contents(markets[1])
+    end)
 end
 
 return MarketExchange

map_gen/Diggy/Feature/StartingZone.lua

@@ -39,24 +39,28 @@ function StartingZone.register(config)
         local tiles = {}
         local rocks = {}
 
+        local dirt_range = floor(starting_zone_size / 2)
+        local rock_range = starting_zone_size - 2
+        local stress_hack = floor(starting_zone_size / 10)
+
         for x = -starting_zone_size, starting_zone_size do
             for y = -starting_zone_size, starting_zone_size do
                 local distance = floor(sqrt(x * x + y * y))
 
                 if (distance < starting_zone_size) then
-                    if (distance > floor(starting_zone_size / 2)) then
+                    if (distance > dirt_range) then
                         insert(tiles, {name = 'dirt-' .. random(1, 7), position = {x = x, y = y}})
                     else
                         insert(tiles, {name = 'stone-path', position = {x = x, y = y}})
                     end
 
-                    if (distance > starting_zone_size - 2) then
+                    if (distance > rock_range) then
                         insert(rocks, {name = 'sand-rock-big', position = {x = x, y = y}})
                     end
 
                     -- hack to avoid starting area from collapsing
-                    if (distance > floor(starting_zone_size / 10)) then
+                    if (distance > stress_hack) then
-                        DiggyCaveCollapse.stress_map_add(surface, {x = x, y = y}, -0.3)
+                        DiggyCaveCollapse.stress_map_add(surface, {x = x, y = y}, -0.5)
                     end
                 end
             end