Fix function calls on nil entities.

quests/zsdx/data/maps/102.lua

@@ -8,7 +8,7 @@ local code_next_index = 1
 -- Returns whether all torches are on
 local function are_all_torches_on()
 
-  return torch_1:exists()
+  return torch_1 ~= nil
       and torch_1:get_sprite():get_animation() == "lit"
       and torch_2:get_sprite():get_animation() == "lit"
       and torch_3:get_sprite():get_animation() == "lit"

quests/zsdx/data/maps/17.lua

@@ -3,7 +3,7 @@ local map = ...
 
 local function are_all_torches_on()
 
-  return torch1:exists()
+  return torch1 ~= nil
     and torch1:get_sprite():get_animation() == "lit"
     and torch2:get_sprite():get_animation() == "lit"
     and torch3:get_sprite():get_animation() == "lit"

quests/zsdx/data/maps/26.lua

@@ -22,7 +22,7 @@ end
 -- Returns whether all four torches are on
 local function are_all_torches_on()
 
-  return torch_1:exists()
+  return torch_1 ~= nil
       and torch_1:get_sprite():get_animation() == "lit"
       and torch_2:get_sprite():get_animation() == "lit"
       and torch_3:get_sprite():get_animation() == "lit"

quests/zsdx/data/maps/34.lua

@@ -3,7 +3,7 @@ local map = ...
 
 local function are_all_torches_on()
 
-  return torch_1:exists()
+  return torch_1 ~= nil
       and torch_1:get_sprite():get_animation() == "lit"
       and torch_2:get_sprite():get_animation() == "lit"
       and torch_3:get_sprite():get_animation() == "lit"

quests/zsdx/data/maps/40.lua

@@ -7,7 +7,7 @@ local remove_water_delay = 500  -- delay between each step when some water is di
 -- Returns whether all five torches are on
 local function are_all_torches_on()
 
-  return torch_1:exists()
+  return torch_1 ~= nil
       and torch_1:get_sprite():get_animation() == "lit"
       and torch_2:get_sprite():get_animation() == "lit"
       and torch_3:get_sprite():get_animation() == "lit"

quests/zsdx/data/maps/56.lua

@@ -5,7 +5,7 @@ local fighting_miniboss = false
 
 local function are_all_torches_on()
 
-  return torch_1:exists()
+  return torch_1 ~= nil
       and torch_1:get_sprite():get_animation() == "lit"
       and torch_2:get_sprite():get_animation() == "lit"
 end

quests/zsdx/data/maps/58.lua

@@ -3,7 +3,7 @@ local map = ...
 
 local function are_all_torches_on()
 
-  return torch_1:exists()
+  return torch_1 ~= nil
       and torch_1:get_sprite():get_animation() == "lit"
       and torch_2:get_sprite():get_animation() == "lit"
 end

quests/zsdx/data/maps/63.lua

@@ -19,7 +19,7 @@ end
 -- Returns whether all torches are on
 local function are_all_torches_on()
 
-  return torch_1:exists()
+  return torch_1 ~= nil
       and torch_1:get_sprite():get_animation() == "lit"
       and torch_2:get_sprite():get_animation() == "lit"
       and torch_3:get_sprite():get_animation() == "lit"

quests/zsdx/data/maps/64.lua

@@ -6,7 +6,7 @@ sol.main.load_file("maps/prison_guard")(map)
 -- Returns whether all torches are on
 local function are_all_torches_on()
 
-  return torch_1:exists()
+  return torch_1 ~= nil
       and torch_1:get_sprite():get_animation() == "lit"
       and torch_2:get_sprite():get_animation() == "lit"
       and torch_3:get_sprite():get_animation() == "lit"

quests/zsdx/data/maps/93.lua

@@ -21,7 +21,7 @@ end
 
 local function are_all_torches_on()
 
-  return torch_1:exists()
+  return torch_1 ~= nil
       and torch_1:get_sprite():get_animation() == "lit"
       and torch_2:get_sprite():get_animation() == "lit"
       and torch_3:get_sprite():get_animation() == "lit"

quests/zsdx/data/maps/97.lua

@@ -3,15 +3,15 @@ local map = ...
 
 local function are_group1_torches_on()
 
-  return torch1_1:exists()
+  return torch1_1 ~= nil
     and torch1_1:get_sprite():get_animation() == "lit"
     and torch1_2:get_sprite():get_animation() == "lit"
     and torch1_3:get_sprite():get_animation() == "lit"
 end
 
 local function are_group2_torches_on()
 
-  return torch2_1:exists()
+  return torch2_1 ~= nil
     and torch2_1:get_sprite():get_animation() == "lit"
     and torch2_2:get_sprite():get_animation() == "lit"
     and torch2_3:get_sprite():get_animation() == "lit"