diff --git a/src/Functions.pbi b/src/Functions.pbi
index 9523850..f29de92 100644
--- a/src/Functions.pbi
+++ b/src/Functions.pbi
@@ -58,30 +58,31 @@ EndProcedure
 ; Shadowmap
 Procedure CalculateShadow()
   Define X.i, Y.i
-  Define MapX.i, MapY.i, Strength.i, CentercheckX.i, CentercheckY.i
+  Define MapX.i, MapY.i, Strength.i, Centercheck.i, CentercheckX.i, CentercheckY.i
   
-  For X.i=0 To #SHADOW_RADIUS*2
-    For Y.i=0 To #SHADOW_RADIUS*2
-      MapX = (Player\X-#SHADOW_RADIUS) + X
-      MapY = (Player\Y-#SHADOW_RADIUS) + Y
+  For X.i=-#SHADOW_RADIUS To #SHADOW_RADIUS*2
+    For Y.i=-#SHADOW_RADIUS To #SHADOW_RADIUS*2
+      MapX = Player\X + X
+      MapY = Player\Y + Y
       
-      CentercheckX = X - #SHADOW_RADIUS
+      CentercheckX = X
       If CentercheckX < 0
         CentercheckX * -1
       EndIf
-      CentercheckX = 5-CentercheckX
       
-      CentercheckY = Y - #SHADOW_RADIUS
+      CentercheckY = Y
       If CentercheckY < 0
         CentercheckY * -1
       EndIf
-      CentercheckY = 5-CentercheckY
       
       If CentercheckX > CentercheckY
-        CentercheckX = CentercheckY
+        Centercheck = CentercheckX
+      Else
+        Centercheck = CentercheckY
       EndIf
+      Centercheck = #SHADOW_RADIUS - Centercheck;
       
-      Strength = (255 / #SHADOW_RADIUS) * (CentercheckX+1)
+      Strength = (255 / #SHADOW_RADIUS) * (Centercheck)
 
       If MapX >= 0 And MapY >= 0
         If ShadowMap(MapX, MapY)\Strength < Strength