Safety Ores Scenario (#1397)

* Add Safety Ores Scenario

Added safety_ores.lua. Initial commit.

* Update safety_ores.lua

Fixed whitespace and removed unused builders.

* Add scenario template for safety_ores

* Update safety_ores.lua

Added floating error messages
Expanded allowed list
spawn stone ores under pumpjacks
re-enable loaders
balance mapgen

* Update safety_ores.lua

remove unused variable, whitespace

map_gen/maps/safety_ores.lua

@@ -0,0 +1,159 @@
+--- Safety Ores, by R. Nukem, inspired by Zengief
+--- all local resources
+local RS = require 'map_gen.shared.redmew_surface'
+local MGSP = require 'resources.map_gen_settings'
+local ScenarioInfo = require 'features.gui.info'
+local config = global.config
+local RE = require 'map_gen.shared.entity_placement_restriction'
+local Token = require 'utils.token'
+local Event = require 'utils.event'
+--- local math functions
+local floor = math.floor
+--- Scenario Info
+ScenarioInfo.set_map_name('Safety Ores')
+ScenarioInfo.set_map_description('Welcome to Safety Ores.\nOre patches are the only stable ground on this world. All factory buildings must be placed on ores or they will collapse.')
+ScenarioInfo.set_map_extra_info(
+    'Our engineers have only been able to build the following outside the stability of our ore patches:\n -rails \n -rail signals\n -power poles\n -offshore pumps\n -pumpjacks\n -pipes\n-vehicles\n-robots')
+ScenarioInfo.set_new_info(
+    [[
+2024-02-08 - R. Nukem
+- Initial Map Creation
+]]
+)
+--- Market Config
+config.currency = nil
+config.market.enabled = false
+config.player_rewards.enabled = false
+--- Ore Settings. Since we can only build on ore patches high size is recommended.
+--- With high size, lower richness seems intuitive. Frequency is the big ???
+local ore_size = 6
+local ore_richness = 0.166
+local ore_freq = 0.166
+--- Create map_gen table for ores
+local ore_settings = {
+    autoplace_controls = {
+        coal = {
+            frequency = ore_freq,
+            richness = ore_richness,
+            size = ore_size
+        },
+        ['copper-ore'] = {
+            frequency = ore_freq,
+            richness = ore_richness,
+            size = ore_size
+        },
+        ['crude-oil'] = {
+            frequency = 0.25,
+            richness = 2,
+            size = 0.25
+        },
+        ['iron-ore'] = {
+            frequency = ore_freq,
+            richness = ore_richness,
+            size = ore_size
+        },
+        stone = {
+            frequency = ore_freq,
+            richness = ore_richness,
+            size = ore_size
+        },
+        ['uranium-ore'] = {
+            frequency = ore_freq,
+            richness = ore_richness,
+            size = ore_size
+        }
+    }
+}
+--- change enemy autoplace controls
+local enemy_settings = {
+	autoplace_controls = {
+		['enemy-base'] = {
+			frequency = 0.25,
+			richness = 1,
+			size = 1
+            }
+        }
+}
+--- Set map_gen settings
+RS.set_map_gen_settings(
+    {
+		MGSP.default,
+        ore_settings,
+		enemy_settings
+    }
+)
+--- Set Item Restrictions
+--- Items allowed everywhere
+RE.add_allowed({
+	'small-electric-pole',
+	'medium-electric-pole',
+	'big-electric-pole',
+	'rail',
+	'straight-rail',
+	'curved-rail',
+	'pumpjack',
+	'pipe',
+	'pipe-to-ground',
+	'rail-signal',
+	'rail-chain-signal',
+	'offshore-pump',
+	'train-stop',
+	'pump',
+	'car',
+	'tank',
+	'spidertron',
+	'defender',
+	'destroyer',
+	'distractor',
+	'construction-robot',
+	'logistic-robot',
+	'locomotive',
+	'cargo-wagon',
+	'fluid-wagon',
+	'artillery-wagon'
+	})
+--- The logic for checking that there are resources under the entity's position
+RE.set_keep_alive_callback(
+        Token.register(
+            function(entity)
+				local box = entity.bounding_box
+                if entity.surface.count_entities_filtered {area = box, type = 'resource', limit = 1} > 0 then
+						return true
+				end
+            end
+        )
+    )
+--- Warning for players when their entities are destroyed
+local function on_destroy(event)
+	local p = event.player
+	if p and p.valid then
+		p.surface.create_entity{name="flying-text", position = p.position, text = 'You can only build that on top of ores, the ground is too soft'}
+	end
+end
+Event.add(RE.events.on_restricted_entity_destroyed, on_destroy)
+--- Spawn stone around pumpjacks so oil can be defended
+local function on_built_pumpjack(event)
+	local size = 7 -- size in all directions from center. total size = 2x+1
+	local density = 1 -- Every time a pumpjack is placed this much stone is added
+	local entity = event.created_entity
+	if not entity or not entity.valid then
+		return
+	end
+--- calculate center of bounding box
+	local box = entity.bounding_box
+	local center_x = floor((box.left_top.x + box.right_bottom.x)/2)
+	local center_y = floor((box.left_top.y + box.right_bottom.y)/2)
+--- If a pumpjack is built, create a 2x+1 square of stone centered on the pumpjack
+	if entity.name == 'pumpjack' then
+		for x = center_x - size, center_x + size do
+			for y = center_y - size, center_y + size do
+				if entity.surface.get_tile(x, y).collides_with("ground-tile") then
+					entity.surface.create_entity({name="stone", amount=density, position={x, y}})
+				end
+			end
+		end
+	end
+end
+Event.add(defines.events.on_robot_built_entity, on_built_pumpjack)
+Event.add(defines.events.on_built_entity, on_built_pumpjack)
+--- To Do:

scenario_templates/safety-ores/map_selection.lua

@@ -0,0 +1 @@
+return require 'map_gen.maps.safety_ores'