fix: door spawn required wall be exist on the cells that don't matter

src/net/torvald/terrarum/Terrarum.kt

@@ -1013,3 +1013,9 @@ fun distBetween(a: ActorWithBody, bpos: Vector2): Double {
 }
 const val hashStrMap = "YBNDRFG8EJKMCPQXOTLVWIS2A345H769"
 fun getHashStr(length: Int = 5) = (0 until length).map { hashStrMap[Math.random().times(32).toInt()] }.joinToString("")
+
+fun <S, T> List<S>.cartesianProduct(other: List<T>) = this.flatMap { thisIt ->
+    other.map { otherIt ->
+        thisIt to otherIt
+    }
+}

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

@@ -218,12 +218,6 @@ open class FixtureBase : ActorWithBody, CuedByTerrainChange {
         }
     }
 
-    private fun <S, T> List<S>.cartesianProduct(other: List<T>) = this.flatMap { thisIt ->
-        other.map { otherIt ->
-            thisIt to otherIt
-        }
-    }
-
     val everyBlockboxPos: List<Pair<Int, Int>>?
         get() = worldBlockPos?.let { (posX, posY) ->
             (posX until posX + blockBox.width).toList().cartesianProduct((posY until posY + blockBox.height).toList())
@@ -254,7 +248,7 @@ open class FixtureBase : ActorWithBody, CuedByTerrainChange {
         return canSpawnHere0(posX, posY)
     }
 
-    private fun canSpawnHere0(posX: Int, posY: Int): Boolean {
+    open fun canSpawnHere0(posX: Int, posY: Int): Boolean {
         val everyBlockboxPos = (posX until posX + blockBox.width).toList().cartesianProduct((posY until posY + blockBox.height).toList())
 
         // check for existing blocks (and fixtures)

src/net/torvald/terrarum/modulebasegame/gameactors/FixtureSwingingDoorBase.kt

@@ -145,6 +145,33 @@ open class FixtureSwingingDoorBase : FixtureBase {
 
     override fun spawn(posX: Int, posY: Int, installersUUID: UUID?): Boolean = spawn(posX, posY, installersUUID, tilewiseHitboxWidth, tilewiseHitboxHeight)
 
+    override fun canSpawnHere0(posX: Int, posY: Int): Boolean {
+        val everyBlockboxPos = (posX until posX + blockBox.width).toList().cartesianProduct((posY until posY + blockBox.height).toList())
+
+        val xoffToFrame = (tilewiseHitboxWidth - twClosed) / 2
+        val everyDoorframePos = (posX + xoffToFrame until posX + blockBox.width - 1).toList().cartesianProduct((posY until posY + blockBox.height).toList())
+
+        // check for existing blocks (and fixtures)
+        var cannotSpawn = false
+        worldBlockPos = Point2i(posX, posY)
+
+        cannotSpawn = everyBlockboxPos.any { (x, y) -> !BlockCodex[world!!.getTileFromTerrain(x, y)].hasTag("INCONSEQUENTIAL") }
+
+        // check for walls, if spawnNeedsWall = true
+        if (spawnNeedsWall) {
+            cannotSpawn = cannotSpawn or everyDoorframePos.any { (x, y) -> !BlockCodex[world!!.getTileFromWall(x, y)].isSolid }
+        }
+
+        // check for floors, if spawnNeedsFloor == true
+        if (spawnNeedsFloor) {
+            val y = posY + blockBox.height
+            val xs = posX + xoffToFrame until posX + blockBox.width - xoffToFrame
+            cannotSpawn = cannotSpawn or xs.any { x -> !BlockCodex[world!!.getTileFromTerrain(x, y)].isSolid }
+        }
+
+        return !cannotSpawn
+    }
+
     override fun reload() {
         super.reload()