get player dir sprite swapping working

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defold_game/main/main.collection

@@ -2,11 +2,7 @@ name: "main"
 scale_along_z: 0
 embedded_instances {
   id: "camera"
-  data: "components {\n"
-  "  id: \"zoom\"\n"
-  "  component: \"/main/zoom.script\"\n"
-  "}\n"
-  "embedded_components {\n"
+  data: "embedded_components {\n"
   "  id: \"camera\"\n"
   "  type: \"camera\"\n"
   "  data: \"aspect_ratio: 1.0\\n"
@@ -25,13 +21,10 @@ embedded_instances {
 }
 embedded_instances {
   id: "player"
+  children: "body"
   data: "components {\n"
-  "  id: \"body\"\n"
-  "  component: \"/main/player.sprite\"\n"
-  "}\n"
-  "components {\n"
-  "  id: \"player1\"\n"
-  "  component: \"/main/player.script\"\n"
+  "  id: \"player_controller\"\n"
+  "  component: \"/main/player/player.script\"\n"
   "}\n"
   ""
   position {
@@ -39,3 +32,11 @@ embedded_instances {
     y: 503.0
   }
 }
+embedded_instances {
+  id: "body"
+  data: "components {\n"
+  "  id: \"body\"\n"
+  "  component: \"/main/player/player.sprite\"\n"
+  "}\n"
+  ""
+}

defold_game/main/player/player.script

@@ -5,11 +5,22 @@ local WHEEL_BASE = 80
 
 local UP = vmath.vector3(0, 1, 0)
 
+local DIRECTIONS = { "n", "ne", "e", "se", "s", "sw", "w", "nw" }
+
+local function get_direction(rot)
+    local forward = vmath.rotate(rot, UP)
+    local angle = math.deg(math.atan2(forward.x, forward.y))
+    if angle < 0 then angle = angle + 360 end
+    local index = math.floor((angle + 22.5) / 45) % 8 + 1
+    return DIRECTIONS[index]
+end
+
 function init(self)
     msg.post(".", "acquire_input_focus")
 
     self.left_speed = 0
     self.right_speed = 0
+    self.current_anim = nil
     self.left_fwd = false
     self.left_rev = false
     self.right_fwd = false
@@ -46,14 +57,23 @@ function update(self, dt)
     local linear_speed = (self.left_speed + self.right_speed) / 2
     local angular_vel = (self.right_speed - self.left_speed) / WHEEL_BASE
 
+    -- pprint({rot_changes = angular_vel * dt})
     local rot = go.get_rotation()
     rot = rot * vmath.quat_rotation_z(angular_vel * dt)
     go.set_rotation(rot)
 
+    go.set_rotation(vmath.conj(rot), "body")
+
     local p = go.get_position()
     p = p + vmath.rotate(rot, UP * linear_speed * dt)
     go.set_position(p)
 
+    -- switch animation when facing direction changes
+    local dir = get_direction(rot)
+    if dir ~= self.current_anim then
+      self.current_anim = dir
+      msg.post("body#body", "play_animation", { id = hash(dir) })
+    end
 end
 
 function on_input(self, action_id, action)

defold_game/main/player/player.sprite

@@ -2,5 +2,5 @@ default_animation: "n"
 material: "/builtins/materials/sprite.material"
 textures {
   sampler: "texture_sampler"
-  texture: "/main/player.tilesource"
+  texture: "/main/player/player.tilesource"
 }

defold_game/main/zoom.script

@@ -1,60 +0,0 @@
-function init(self)
-	-- Add initialization code here
-	-- Learn more: https://defold.com/manuals/script/
-	-- Remove this function if not needed
-	msg.post("@render:", "use_fixed_projection", { near = -1, far = 1, zoom = 5 })
-	
-end
-
-function final(self)
-	-- Add finalization code here
-	-- Learn more: https://defold.com/manuals/script/
-	-- Remove this function if not needed
-end
-
-function update(self, dt)
-	-- Add update code here
-	-- Learn more: https://defold.com/manuals/script/
-	-- Remove this function if not needed
-	msg.post("@render:", "use_fixed_projection", { near = -1, far = 1, zoom = 5 })
-	
-end
-
-function late_update(self, dt)
-	-- This function is called at the end of update cycle but before render
-	-- Learn more: https://defold.com/manuals/script/
-	-- Remove this function if not needed
-end
-
-function fixed_update(self, dt)
-	-- This function is called if 'Fixed Update Frequency' is enabled in the Engine section of game.project
-	-- Can be coupled with fixed updates of the physics simulation if 'Use Fixed Timestep' is enabled in
-	-- Physics section of game.project
-	-- Add update code here
-	-- Learn more: https://defold.com/manuals/script/
-	-- Remove this function if not needed
-end
-
-function on_message(self, message_id, message, sender)
-	-- Add message-handling code here
-	-- Learn more: https://defold.com/manuals/message-passing/
-	-- Remove this function if not needed
-end
-
-function on_input(self, action_id, action)
-	-- Add input-handling code here. The game object this script is attached to
-	-- must have acquired input focus:
-	--
-	--    msg.post(".", "acquire_input_focus")
-	--
-	-- All mapped input bindings will be received. Mouse and touch input will
-	-- be received regardless of where on the screen it happened.
-	-- Learn more: https://defold.com/manuals/input/
-	-- Remove this function if not needed
-end
-
-function on_reload(self)
-	-- Add reload-handling code here
-	-- Learn more: https://defold.com/manuals/hot-reload/
-	-- Remove this function if not needed
-end