checking speed vs memory cost

README.md

@@ -58,6 +58,7 @@ Configure Options not in game menu:
 # Version History
 
 0.15.17 -  
+- Tweak: Increased sampling threshold for water tiles from 5 to 10 tiles  
 - Tweak: Increased small worm turret range from 17 to 18  
 - Improvement: added ground effect to worm turret for attacking drones  
 - Improvement: Added option to remove blood particles on biter deaths, which should help reduce lag spikes (default is to remove them)  

libs/ChunkUtils.lua

@@ -108,14 +108,14 @@ function chunkUtils.checkChunkPassability(chunkTiles, chunk, surface)
     local get_tile = surface.get_tile
 
     --[[
-	0-4 represents water chunk
-	5-46 chunk requires full scan
+	0-10 represents water chunk
+	11-46 chunk requires full scan
 	47-49 assume chunk is passable in all directions
     --]]
     local cleanSpotCheck = spotCheck(x, y, get_tile)
 
     local pass = CHUNK_ALL_DIRECTIONS
-    if (cleanSpotCheck > 5) and (cleanSpotCheck < 47) then
+    if (cleanSpotCheck > 10) and (cleanSpotCheck < 47) then
 	pass = CHUNK_IMPASSABLE
 	local rating, passableNorthSouth, passableEastWest = fullScan(chunkTiles, x, y, get_tile)
 
@@ -131,7 +131,7 @@ function chunkUtils.checkChunkPassability(chunkTiles, chunk, surface)
 	if (rating < 0.6) then
 	    pass = CHUNK_IMPASSABLE
 	end
-    elseif (cleanSpotCheck <= 4) then    
+    elseif (cleanSpotCheck <= 10) then
 	pass = CHUNK_IMPASSABLE
     else
 	chunk[PATH_RATING] = 1

libs/TendrilUtils.lua

@@ -52,6 +52,9 @@ end
 local function removeTendril(base, tendril)
     for i=1,#base.tendrils do
 	if (base.tendrils[i] == tendril) then
+	    if tendril.unit.valid then
+		tendril.unit.destroy()
+	    end
 	    table.remove(base.tendrils,i)
 	    break
 	end
@@ -94,7 +97,7 @@ local function buildTendrilPath(regionMap, tendril, surface, base, tick, natives
 		tendril.target = position
 		tendrilUnit.set_command({ type = defines.command.go_to_location,
 					  destination = position,
-					  distraction = defines.distraction.by_damage })
+					  distraction = defines.distraction.by_none })
 		
 		-- needs to check to make sure unit still exists as well.
 		--tendril.cycles = 2
@@ -103,7 +106,7 @@ local function buildTendrilPath(regionMap, tendril, surface, base, tick, natives
 		-- local biterSpawner = {name="spitter-spawner", position=position}
 		-- local hive = surface.create_entity(biterSpawner)
 		-- registerEnemyBaseStructure(regionMap, hive, base)
-	    -- elseif not position then
+		-- elseif not position then
 		-- 	removeTendril(base, tendril)
 	    end
 	end