diff --git a/.gitignore b/.gitignore
index 6e886fc..99e02e1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,3 @@
-bin/
+build/
 .DS_Store
 log.txt
diff --git a/README.md b/README.md
index 288c4ac..37d1de4 100644
--- a/README.md
+++ b/README.md
@@ -2,10 +2,7 @@
 ## INTRODUCTION
 
 This is a tower defense game. It's made using lua, and the amulet game engine made by Ian Maclarty.
-If you are interested in a library of code for dealing with hexagonal grids/geometry in your game, the file src/hexyz.lua may be of interest to you, as may be the resources below.
-
-
-
+If you are interested in a library of code for dealing with hexagonal grids/geometry in your (amulet or lua based) game, the file src/hexyz.lua may be of interest to you, as may be the resources below.
 
 ## RESOURCES
 
diff --git a/build.sh b/build.sh
index c31e397..c537003 100755
--- a/build.sh
+++ b/build.sh
@@ -1,4 +1,4 @@
 
 # add -mac, -windows, -linux, or -html if you only want one target
-rm -r bin/*
-amulet export -r -d bin/ -a .
+rm -r build/*
+amulet export -r -d build/ -a .
diff --git a/main.lua b/main.lua
index 1c3acce..c426d36 100644
--- a/main.lua
+++ b/main.lua
@@ -69,7 +69,7 @@ do
         mode      = settings.fullscreen and "fullscreen" or "windowed",
         resizable = true,
         highdpi   = true,
-        resizable = true, -- user should probably set their resolution instead of resizing the window, but hey.
+        --resizable = true, -- user should probably set their resolution instead of resizing the window, but hey.
         letterbox = true,
         show_cursor = true,
     }
@@ -92,7 +92,6 @@ require "src/mob"
 require "src/projectile"
 require "src/tower"
 
-
 -- text popup in the middle of the screen that dissapates, call from anywhere
 function alert(message, color)
     win.scene:append(
diff --git a/res/Sprite-0002.aseprite b/res/Sprite-0002.aseprite
new file mode 100644
index 0000000..eed5b31
Binary files /dev/null and b/res/Sprite-0002.aseprite differ
diff --git a/res/radar2.png b/res/radar2.png
new file mode 100644
index 0000000..5e6c3bd
Binary files /dev/null and b/res/radar2.png differ
diff --git a/res/radar3.png b/res/radar3.png
new file mode 100644
index 0000000..a41277d
Binary files /dev/null and b/res/radar3.png differ
diff --git a/res/tower_radar4.png b/res/tower_radar4.png
new file mode 100644
index 0000000..1b1e481
Binary files /dev/null and b/res/tower_radar4.png differ
diff --git a/src/hexyz.lua b/src/hexyz.lua
index 76ca6cc..2bedf07 100644
--- a/src/hexyz.lua
+++ b/src/hexyz.lua
@@ -9,11 +9,7 @@
 --  table.append
 
 
-if not math.round then
-    math.round = function(n) return math.floor(n + 0.5) end
-else
-    error("clobbering 'math.round', oopsie!")
-end
+
 
 -- @TODO
 if not table.append then end
@@ -126,12 +122,13 @@ function hex_neighbours(hex)
     return neighbours
 end
 
+local function round(n) return math.floor(n + 0.5) end
+
 -- Returns a vec2 Which is the Nearest |x, y| to Float Trio |x, y, z|
--- assumes you have a working math.round function (should be guarded at top of this file)
 local function hex_round(x, y, z)
-    local rx = math.round(x)
-    local ry = math.round(y)
-    local rz = math.round(z) or math.round(-x - y)
+    local rx = round(x)
+    local ry = round(y)
+    local rz = round(z) or round(-x - y)
 
     local xdelta = math.abs(rx - x)
     local ydelta = math.abs(ry - y)
diff --git a/src/mob.lua b/src/mob.lua
index 6fa3527..bf2bbaf 100644
--- a/src/mob.lua
+++ b/src/mob.lua
@@ -1,6 +1,4 @@
 
-state.mobs = {}
-
 MOB_TYPE = {
     BEEPER = 1,
     SPOODER = 2
diff --git a/src/projectile.lua b/src/projectile.lua
index 5319ea2..e6c5671 100644
--- a/src/projectile.lua
+++ b/src/projectile.lua
@@ -1,6 +1,4 @@
 
-state.projectiles = {}
-
 PROJECTILE_TYPE = {
     SHELL = 1,
     LASER = 2,
diff --git a/src/tower.lua b/src/tower.lua
index b9b9e3d..c4bb802 100644
--- a/src/tower.lua
+++ b/src/tower.lua
@@ -1,6 +1,4 @@
 
-state.towers = {}
-
 TOWER_TYPE = {
     WALL       = 1,
     HOWITZER   = 2,
diff --git a/texture.lua b/texture.lua
index 7b9bb20..730e7b7 100644
--- a/texture.lua
+++ b/texture.lua
@@ -9,7 +9,6 @@ local function load_texture(filepath)
     end
 end
 
-
 TEXTURES = {
     -- note that in amulet, if you prefix paths with './', they fail to be found in the exported data.pak
     LOGO                    = load_texture("res/logo.png"),
@@ -46,7 +45,7 @@ TEXTURES = {
     TOWER_REDEYE_ICON       = load_texture("res/tower_redeye_icon.png"),
     TOWER_MOAT              = load_texture("res/tower_moat.png"),
     TOWER_MOAT_ICON         = load_texture("res/tower_moat_icon.png"),
-    TOWER_RADAR             = load_texture("res/tower_radar.png"),
+    TOWER_RADAR             = load_texture("res/tower_radar4.png"),
     TOWER_RADAR_ICON        = load_texture("res/tower_radar_icon.png"),
     TOWER_LIGHTHOUSE        = load_texture("res/tower_lighthouse.png"),
     TOWER_LIGHTHOUSE_ICON   = load_texture("res/tower_lighthouse_icon.png"),
@@ -66,7 +65,8 @@ function pack_texture_into_sprite(texture, width, height, color)
         y1 = 0, y2 = height, height = height
     }
 
-    sprite.color = color or vec4(1)
+    if color then sprite.color end
+
     return sprite
 end