diff --git a/src/net/torvald/terrarum/serialise/WriteSavegame.kt b/src/net/torvald/terrarum/serialise/WriteSavegame.kt
index a8de24cf7..fc78760ab 100644
--- a/src/net/torvald/terrarum/serialise/WriteSavegame.kt
+++ b/src/net/torvald/terrarum/serialise/WriteSavegame.kt
@@ -53,8 +53,8 @@ object WriteSavegame {
                 val w = 960
                 val h = 640
 
-                val cx = WorldCamera.x % 2
-                val cy = WorldCamera.y % 2
+                val cx = (1 - WorldCamera.x % 2)
+                val cy = (1 - WorldCamera.y % 2)
 
                 val x = (fb.width - w) - cx // force the even-numbered position
                 val y = (fb.height - h) - cy // force the even-numbered position
diff --git a/src/net/torvald/terrarum/worlddrawer/LightmapRenderer.kt b/src/net/torvald/terrarum/worlddrawer/LightmapRenderer.kt
index d81163045..9a03b628a 100644
--- a/src/net/torvald/terrarum/worlddrawer/LightmapRenderer.kt
+++ b/src/net/torvald/terrarum/worlddrawer/LightmapRenderer.kt
@@ -341,9 +341,10 @@ object LightmapRenderer {
                         for (x in lightBoxX.div(TILE_SIZE).floorInt()
                                 ..lightBoxX.plus(lightBoxW).div(TILE_SIZE).floorInt()) {
 
-                            val normalisedCvec = it.color//.cpy().mul(DIV_FLOAT)
+                            val oldLight = lanternMap[LandUtil.getBlockAddr(world, x, y)] ?: Cvec(0) // if two or more luminous actors share the same block, mix the light
+                            val actorLight = it.color
 
-                            lanternMap[LandUtil.getBlockAddr(world, x, y)] = normalisedCvec
+                            lanternMap[LandUtil.getBlockAddr(world, x, y)] = oldLight.maxAndAssign(actorLight)
                         }
                     }
                 }