Introduce pause mechanics, refactor a little

Introduce Pause mechanics and mention it in README.md.
Makefile: replace unnecessary "-MMD -MP" with just "-MD" flag, so it
allows to compile with tcc too.
Refactor: Rename game.isStarted field to game.started field. Move
arrKeys container to engine.c and remove it from main.c. Refactor char
iterator in utf8to32_strcpy function.

1 files changed, 2 insertions, 3 deletions

diff --git a/src/main.c b/src/main.c
index 89754ff..bf9014a 100644
--- a/src/main.c
+++ b/src/main.c
@@ -21,15 +21,14 @@ struct idlist *texts;
 
 struct field  fld, nxt;
 struct game   game = {
-    .isStarted = 0,
+    .started = 0,
+    .paused = 0,
     .scoreCurrent = 0,
     .level = 1,
     .moveLatency = L00LATENCY,
     .lines = 0
 };
 
-char arrKeys = 0;
-
 static void handleWindowEvents() {
     sfEvent event;
     while (sfRenderWindow_pollEvent(window, &event))