working filesystem (tested: mkdir, open, file:writeLine/close, cp, mv, rm)

Former-commit-id: ce3fcae801291f770ed19dce4616b8ab61556f9b
Former-commit-id: 999d637fac1c1c6a9ff855ebb8f7f37336519771

src/net/torvald/terrarum/gameactors/FixtureBase.kt

@@ -0,0 +1,34 @@
+package net.torvald.terrarum.gameactors
+
+import net.torvald.spriteanimation.SpriteAnimation
+
+/**
+ * Created by minjaesong on 16-06-17.
+ */
+open class FixtureBase : ActorWithBody() {
+    /**
+     * 0: Open
+     * 1: Blocked
+     * 2: Platform; can be stood on, press DOWN to go down. Also allows other blocks can be places on top of it (e.g. torch)
+     * 3: Wall_left; blocks rightward movement
+     * 4: Wall_right: blocks leftward movement
+     * For example, flag of 4 is good for tables; player can stand on, which means
+     * downward movement is blocked within the fixtures' AABB.
+     */
+    var collisionFlag: Int = 0
+
+    /**
+     * Normally if player is standing on the fixtures (with flag 2 -- COLLISION_PLATFORM),
+     * pressing DOWN wiil allow player to get down.
+     * Setting this flag TRUE will block such movement (player cannot get down)
+     */
+    var cannotPassThru = false
+
+    companion object {
+        val COLLISION_OPEN = 0
+        val COLLISION_BLOCKED = 1
+        val COLLISION_PLATFORM = 2
+        val COLLISION_WALL_LEFT = 3
+        val COLLISION_WALL_RIGHT = 4
+    }
+}