changes to mobius_strip

locale/gen_combined/grilledham_map_gen/presets/mobius_strip.lua

@@ -26,4 +26,85 @@ local map = compound_or({ half, flip_xy(half) })
 
 map = scale(map, 16, 16)
 
+
+local function research_finished(event)
+    local tech = event.research.name
+    if tech == "rocket-silo" then
+        game.forces["player"].recipes["rocket-silo"].enabled = false
+    end
+end
+
+Event.register(defines.events.on_research_finished, research_finished)
+
+local function max_axis_distance(world_x, world_y, target_x, target_y)
+    local x = math.abs(world_x - target_x)
+    local y = math.abs(world_y - target_y)
+
+    return math.max(x, y)
+end
+
+local function distance(world_x, world_y, target_x, target_y)
+    return math.abs(world_x - target_x) + math.abs(world_y - target_y)
+end
+
+local init = false
+local safe_distance = 480
+local function effect(x, y, world_x, world_y, tile, entity)
+    local surface = MAP_GEN_SURFACE
+
+    if not init then
+        init = true
+        game.forces["player"].chart(surface, { {-32, -32}, {31, 31} })
+    end
+
+    if world_x == 0 and world_y == 0 then      
+        for _, e in ipairs(surface.find_entities({ {-5, -5}, {5, 5} })) do
+            e.destroy()
+        end        
+        
+        local e = surface.create_entity({ name = "rocket-silo", position = {0, 0}, force = "player" })
+        e.destructible = false
+        e.minable = false
+    end
+
+    if max_axis_distance(world_x, world_y, -2144, 0) < safe_distance then        
+        for _, e in ipairs(surface.find_entities_filtered({ force = "enemy", position = { world_x, world_y } } )) do            
+            e.destroy()
+        end
+    elseif max_axis_distance(world_x, world_y, 2144, 0) < safe_distance then
+        for _, e in ipairs(surface.find_entities_filtered({ force = "enemy", position = { world_x, world_y } } )) do            
+            e.destroy()
+        end
+    end
+
+    for _, e in ipairs(surface.find_entities_filtered({ type = "resource", area = {{world_x, world_y  }, {world_x + 1, world_y + 1 } } })) do -- I want to use position but for some reason it doesn't seem to work for ores.
+        local dist1 = distance(world_x, world_y, -2144, 0)
+        local dist2 = distance(world_x, world_y, 2144, 0)
+        local amount = math.min(dist1, dist2)
+
+        local name = e.name
+        if name == "iron-ore" then
+            amount = 800 + 0.4 * amount 
+        elseif name == "copper-ore" then
+            amount = 700 + 0.35 * amount 
+        elseif name == "coal" then
+            amount = 600 + 0.3 * amount 
+        elseif name == "stone" then
+            amount = 400 + 0.2 * amount 
+        elseif name == "uranium-ore" then
+            amount = 300 + 0.15 * amount
+        elseif name == "crude-oil" then
+            amount = 15000 + 175 * amount 
+        end
+
+        e.amount = amount        
+    end
+
+    return tile, entity    
+end
+
+map = apply_effect(map, effect)
+
+
+
 return map