Diff: SnakeBody/SnakeBody.cpp

Revision:

3:fcd6d70e9694

Child:

4:ea3fa51c4386

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SnakeBody/SnakeBody.cpp	Wed May 20 21:25:40 2020 +0000
@@ -0,0 +1,34 @@
+#include "SnakeBody.h"
+
+// nothing doing in the constructor and destructor
+SnakeBody::SnakeBody()
+{
+//constructor
+    Direction _fsm[5] = {
+        {0, 0,  0, {0,1,2,3,4}},  // Centred
+        {1, 0, -1, {1,1,2,1,4}},  // North, will not go to centre or south
+        {2, 1,  0, {2,1,2,3,2}},  // East, will not go to centre or west
+        {3, 0,  1, {3,3,2,3,4}},  // South, will not go to centre or north
+        {4, -1, 0, {4,1,4,3,4}}   // West, will not go to centre or east
+    };
+}
+
+SnakeBody::~SnakeBody()
+{
+//deconstructor
+}
+
+void update_movement(int x_max, int y_max, int cell_size, int d, int _state) {   
+    /*
+    if ((_x_head % cell_size) + (_y_head % cell_size) == 0) {   // only allows changing movement when the snake is cell-aligned
+        d = pad.get_cardinal();          // gets joystick cardinal direction: 0 for centre, 1 - 4 for NESW respectively
+        state = _fsm[_state].nextState[d]; // adjusts direction fsm state based on direction
+    }
+    
+    _x_head += _fsm[_state].delta_x; // increments x value based on fsm state value
+    _y_head += _fsm[_state].delta_y; // increments y value based on fsm state value
+            
+    _x_head = ((x_head % X_MAX) + X_MAX)% X_MAX; // wraps x back to within range 0-83
+    _y_head = ((y_head % Y_MAX) + Y_MAX)% Y_MAX; // wraps y back to within range 0-83
+    */    
+};    
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