Fix missing player marker

map_formspec.lua

@@ -20,9 +20,27 @@ local function unknown_biome_tile(x, y, scale, variant)
     return tile:format(x, y, scale, scale, cartographer.skin.unknown_biome_texture .. "." .. tostring(variant) .. ".png");
 end
 
+-- Generate formspec markup for a given map
+-- data: The mapping data
+-- x: The X position of the map (in map coordinates)
+-- y: The Z position of the map (in map coordinates)
+-- w: The width of the map (in map coordinates)
+-- h: The height of the map (in map coordinates)
+-- player_x: The X position of the player marker (in map coordinates)
+-- player_y: The Y position of the player marker (in map coordinates)
+-- detail: The detail level
+-- map_scale: Integer scaling factor for displaying a zoomed-out map
+-- (Optional) is_visible: Callback to determine if a tile should be drawn
+-- (Optional) get_marker: Callback to get the marker for any given tile
+-- (Optional) user: userdata passed to the is_visible/get_marker callbacks
+--
+-- Returns a formspec string
 local function generate_map(data, x, y, w, h, player_x, player_y, detail, map_scale, is_visible, get_marker, user)
     local str = "";
     local random = PcgRandom(x + y + w + h); -- TODO: Better seed
+    player_x = math.floor(player_x / map_scale + 0.5);
+    player_y = math.floor(player_y / map_scale + 0.5);
+
     for i = x,x + w,1 do
         local fx = (i - x) * (scale - 0.01);
         local column = data.generated[i * map_scale];