diff --git a/init.lua b/init.lua
index 7c3e898..70072c5 100644
--- a/init.lua
+++ b/init.lua
@@ -1,8 +1,8 @@
 local maps    = require("lib-core.maps")
 local r_lib   = require("lib-core.render")
+local camera  = require("lib-core.camera")
 
--- inline stubs (extract in P.0.lib.{camera,input,player_control,actor,interaction})
-local camera          = { hello = function() return "camera stub" end }
+-- inline stubs (extract in P.0.lib.{input,player_control,actor,interaction})
 local input           = { hello = function() return "input stub" end }
 local player_control  = { hello = function() return "player_control stub" end }
 local actor           = { hello = function() return "actor stub" end }
@@ -11,31 +11,39 @@ local interaction     = { hello = function() return "interaction stub" end }
 local demo_map = maps.load("maps/demo.map.json")
 maps.set_current(demo_map)
 
+-- Center camera on map center
+local m_size  = maps.size()
+local t_size  = maps.tile_size()
+camera.set_target((m_size.w * t_size) / 2, (m_size.h * t_size) / 2)
+camera.set_zoom(1.0)
+
 local frames = 0
 local TARGET_FRAMES = 60
 
 function init(ctx)
     engine.print("spine-prototype init: maps loaded")
     engine.print("inline stubs loaded: "
-        .. camera.hello() .. ", "
         .. input.hello() .. ", "
         .. player_control.hello() .. ", "
         .. actor.hello() .. ", "
         .. interaction.hello())
-    local size = maps.size()
-    engine.print(string.format("map size: %dx%d", size.w, size.h))
+    engine.print(string.format("map size: %dx%d", m_size.w, m_size.h))
     local corner = maps.tile_at(0, 0)
     local interior = maps.tile_at(5, 5)
     engine.print("tile at (0,0): " .. corner.id)
     engine.print("tile at (5,5): " .. interior.id)
     engine.print("walkable at (0,0): " .. tostring(maps.is_walkable(0, 0)))
     engine.print("walkable at (5,5): " .. tostring(maps.is_walkable(5, 5)))
-    engine.print(string.format("render: %d tiles per frame", size.w * size.h))
+    engine.print(string.format("render: %d tiles per frame", m_size.w * m_size.h))
+    local t = camera.target()
+    engine.print(string.format("camera: target=(%d,%d) zoom=%.2f", t.x, t.y, camera.zoom()))
 end
 
 function render(ctx)
     engine.render.clear_color(engine.render.rgb(20, 20, 30))
+    camera.begin()
     r_lib.draw_map()
+    camera.finish()
 end
 
 function update(ctx, dt)
diff --git a/manifest.module b/manifest.module
index 677d0a1..82a6160 100644
--- a/manifest.module
+++ b/manifest.module
@@ -6,6 +6,7 @@
     "entry_point": "init.lua",
     "deps": [
         {"id":"lib-core.maps","version":"0.1.0"},
-        {"id":"lib-core.render","version":"0.1.0"}
+        {"id":"lib-core.render","version":"0.1.0"},
+        {"id":"lib-core.camera","version":"0.1.0"}
     ]
 }