thread pooling terraingen, WIP

Former-commit-id: 1d0687d8b34d5e8192b652904a437cdb29f27b10
Former-commit-id: 1c06ce97a59eb13455cc180a4d5f13ffbead1f84

src/net/torvald/terrarum/mapgenerator/ThreadProcessNoiseLayers.kt

@@ -0,0 +1,46 @@
+package net.torvald.terrarum.mapgenerator
+
+/**
+ * Created by minjaesong on 16-06-13.
+ */
+class ThreadProcessNoiseLayers(val startIndex: Int, val endIndex: Int,
+                               val noiseRecords: Array<MapGenerator.TaggedJoise>) : Runnable {
+
+
+    override fun run() {
+        for (record in noiseRecords) {
+            println("[mapgenerator] ${record.message}...")
+            for (y in startIndex..endIndex) {
+                for (x in 0..MapGenerator.WIDTH - 1) {
+                    val noise: Float = record.noiseModule.get(
+                            x.toDouble() / 48.0, // 48: Fixed value
+                            y.toDouble() / 48.0
+                    ).toFloat()
+
+                    val fromTerr = record.replaceFromTerrain
+                    val fromWall = record.replaceFromWall
+
+                    val to: Int = when (record.replaceTo) {
+                    // replace to designated tile
+                        is Int      -> record.replaceTo as Int
+                    // replace to randomly selected tile from given array of tile IDs
+                        is IntArray -> (record.replaceTo as IntArray)[MapGenerator.random.nextInt((record.replaceTo as IntArray).size)]
+                        else        -> throw IllegalArgumentException("[mapgenerator] Unknown replaceTo tile type '${record.replaceTo.javaClass.canonicalName}': Only 'kotlin.Int' and 'kotlin.IntArray' is valid.")
+                    }
+                    // replace to ALL? this is bullshit
+                    if (to == MapGenerator.TILE_MACRO_ALL) throw IllegalArgumentException("[mapgenerator] Invalid replaceTo: TILE_MACRO_ALL")
+
+                    // filtered threshold
+                    val threshold = record.filter.getGrad(y, record.filterArg1, record.filterArg2)
+
+                    if (noise > threshold * record.scarcity) {
+                        if ((MapGenerator.map.getTileFromTerrain(x, y) == fromTerr || fromTerr == MapGenerator.TILE_MACRO_ALL)
+                            && (MapGenerator.map.getTileFromWall(x, y) == fromWall || fromWall == MapGenerator.TILE_MACRO_ALL)) {
+                            MapGenerator.map.setTileTerrain(x, y, to)
+                        }
+                    }
+                }
+            }
+        }
+    }
+}