finally cbuild instead of make

example/snek.c

@@ -2,6 +2,8 @@
 
 #include "tim.h"
 
+#define TPS 10
+
 #define FG  0x10
 #define BG  0xdd
 #define BTN (FG << 16 | BG << 8 | FG)
@@ -21,11 +23,11 @@ typedef union {
 
 static struct {
     i32     state;     // game state (NEW RUN PAUSE OVER)
-    i64 tick;      // updates every 10 ms
+    i64     tick;      // updates every 10 ms
     i32     len;       // snake length
-    point   body[200]; // snake body
     point   food;      // food position
     point   look;      // active direction
+    point   body[200]; // snake body
 } snek;
 
 static void start(void) {
@@ -38,7 +40,7 @@ static void start(void) {
 
 static void game(void) {
     // update game state about every 10 ms
-    i64 tick = tim_time_usec() / 100000;
+    i64 tick = tim_time_usec() / (1000000/TPS);
     if (snek.tick != tick) {
         snek.tick = tick;
         // move one unit