From e874428cd36346fe6e118d434d252ed182c40bea Mon Sep 17 00:00:00 2001
From: Nicholas Hayashi <hayashi.nicholas@gmail.com>
Date: Thu, 4 Feb 2021 00:52:59 -0500
Subject: [PATCH] build feedback

---
 src/game.lua  | 14 +++++++++++++-
 src/tower.lua |  2 +-
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/src/game.lua b/src/game.lua
index 5eedeb9..0245b53 100644
--- a/src/game.lua
+++ b/src/game.lua
@@ -25,7 +25,19 @@ local function get_initial_game_state(seed)
 end
 
 local function can_do_build(hex, tile, tower_type)
-    return can_afford_tower(state.money, tower_type) and tower_is_buildable_on(hex, tile, tower_type)
+    if not can_afford_tower(state.money, tower_type) then
+        return false
+    end
+
+    if not tower_is_buildable_on(hex, tile, tower_type) then
+        local node = WIN.scene("cursor"):child(1)
+        node.color = COLORS.CLARET
+        node:action(am.tween(0.1, { color = COLORS.TRANSPARENT }))
+
+        return false
+    end
+
+    return true
 end
 
 -- initialized later, as part of the init of the toolbelt
diff --git a/src/tower.lua b/src/tower.lua
index f46cb73..e675a4d 100644
--- a/src/tower.lua
+++ b/src/tower.lua
@@ -154,7 +154,7 @@ function tower_is_buildable_on(hex, tile, tower_type)
     elseif tower_type == TOWER_TYPE.LIGHTHOUSE then
         local has_water_neighbour = false
         for _,h in pairs(hex_neighbours(hex)) do
-            local tile = HEX_MAP.get(h.x, h.y)
+            local tile = state.map.get(h.x, h.y)
 
             if tile and tile.elevation < -0.5 then
                 has_water_neighbour = true