Merge pull request #51 from aws-lumberyard/spham_amzn/apple_tree_functional_design_req

Initial checkin of functional design document for the apple tree

docs/design/apple_tree_function_requirements.md

@@ -0,0 +1,22 @@
+# Apple Tree Functional Requirements
+
+## Goal
+The goal for the Apple Tree environment is to simulate realistic physical behavior of simulated apples on apple trees when they are picked by a robotic device (i.e. arm). 
+
+
+### Apple Tree Setup/Configuration
+* For phase one, each apple in the apple tree prefab will be its one individual prefab
+* The apples will be randomly placed as design time for the level
+* The apple trees will be manually layed out on the apple orchard 
+
+### Handling picking apples
+
+* Apple Prefabs are pre-attached to the Apple Tree Prefab. (No dynamic random spawning)
+* Apple Tree Prefabs will be instantiated in a set/fixed row of apple trees
+* The Apple Prefab entity will add a PhysX rigid body, with gravity initially disabled
+* During runtime of the level, the robotic arm will define a volume box to query for entities that fit inside the box
+    * The volume box to query must be slightly larger than the apples
+* The robot script will act upon any apple that triggers the volume box query
+* The robot script will detach the apple through the manipulator and collect it into a basket
+  
+