Revision 7:991749350315, committed 2013-11-14

Comitter:

ansond

Date:

Thu Nov 14 19:32:56 2013 +0000

Parent:

6:446635b12af2

Child:

8:1a26c7f5b2d5

Commit message:

minor updates and tweaks

Changed in this revision

--- a/README.txt	Fri Nov 08 02:34:36 2013 +0000
+++ b/README.txt	Thu Nov 14 19:32:56 2013 +0000
@@ -1,5 +1,13 @@
 Instructions:
 
+VERY IMPORTANT NOTE: 
+
+Please be VERY CAREFUL with the slingshot "bands" - they are easily subject to breaking.
+There is a tunable in the source code called "mouse_scale" that can be used to scale
+the band resistance variation to more easily enable a full "deflection" of the slingshot
+in the game. The band itself will "feel" that it is pretty much fully stretched - please
+DO NOT over stretch the band beyond this limit!  Thanks and have fun!!
+
 1). Complete the “hands-on” exercises first
     - Required to get setup with an mbed account and the compiler environment
 

--- a/main.cpp	Fri Nov 08 02:34:36 2013 +0000
+++ b/main.cpp	Thu Nov 14 19:32:56 2013 +0000
@@ -33,15 +33,6 @@
 // 
 //
 
-// DreamForce2013 TUNABLES START
-
-// maximum angular value of the sling band
-float max_sling_angle = 30.0;
-
-// minimum angluar value of the sling band
-float min_sling_angle = -30.0;
-
-// DreamForce2013 TUNABLES END
 
 // Sling Tunables Start - !!! be careful changing these !!!
 
@@ -54,8 +45,8 @@
 // fire timing threshold
 float fire_timing_threshold = 3.0;
 
-// scaling for mouse movement
-int mouse_scale = 230;
+// scaling for mouse movement - may need to be maniuplated depending on screen resolution to get a full deflection
+int mouse_scale = 250;
 
 // Sling Tunables End
 
@@ -114,8 +105,10 @@
 //        1). Uncomment the debug statement, run the program, and look at raw potentiometer values
 //        2). Determine the min and max potentiometer values you wish to scale to degrees
 //        3). Determine the 90 degree potentiometer value ("median_pot") that denotes the sling band at 90 to the sling body
-//        4). Fill in median_pot, min_pot, max_pot below
-//        5). Compile up and give it a try
+//        4). Guestimate the range of angles you wish to map the potentiometer values (i.e. -x degrees to +y degrees)
+//        5). Fill in min_deg and max_deg below with those angle ranges
+//        6). Compile up and give it a try
+//        7). Additional hint: you may need to modify mouse_scale above to get a full deflection when you stretch the string back.. 
 //
 float potentiometer_value_to_degrees(float val_pot) {
     float deg = 0.0;
@@ -130,9 +123,9 @@
     float max_pot = 0.0;
     float incr_pot = (max_pot*10) - (min_pot*10);       // how many .1 increments we have in the interval [min, max]
     
-    // Mapped degree range: approx [min_sling_angle, max_sling_angle] degrees so convert to
-    float min_deg = min_sling_angle;
-    float max_deg = max_sling_angle;
+    // Mapped degree range: INCOMPLETE: you need to guesstimate the approx angle range i.e. [-x, +y] degrees so convert to
+    float min_deg = 0.0;
+    float max_deg = 0.0;
     float incr_deg = (max_deg*10) - (min_deg*10);       // how many .1 increments we have in the interval [min, max]
     
     // see if we are centered or not