Add simple documentation in comments, refactor.

Change all `unsigned int` and `unsigned long` types to `size_t`.
Fix names alignment in headers.

Add documentation and simple description:
Painter - painter.h
Main - tetris.c
Unicode - unicode.h
IDList - idlist.h
Engine - engine.c

Minor changes:
tetris.c - fix indentation and code blocks separation with newlines,
remove unused includes.
idlist.h - fix structure field name alignment.
field.h, engine.c - define aliases for ghost and active shapes indexes
in the field.
engine.c - rename menuTick to snake case, fix curly braces style of
functions.
Makefile - switch SFML deprecated warnings off.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/text.c b/src/text.c
index f66ad2d..a879d51 100644
--- a/src/text.c
+++ b/src/text.c
@@ -62,7 +62,7 @@ struct idlist *load_texts(char *filename)
                 text->scene = malloc(sizeof(char) * (strlen((char *)ev.data.scalar.value) + 1));
                 strcpy(text->scene, (char *)ev.data.scalar.value);
             } else if (!strcmp((char *)event.data.scalar.value, "text")) {
-                text->text = calloc((utf8_strlen((char *)ev.data.scalar.value)) + 1, sizeof(unsigned int));
+                text->text = calloc((utf8_strlen((char *)ev.data.scalar.value)) + 1, sizeof(size_t));
                 utf8to32_strcpy(text->text, (char *)ev.data.scalar.value);
             } else if (!strcmp((char *)event.data.scalar.value, "font")) {
                 text->font = malloc(sizeof(char) * (strlen((char *)ev.data.scalar.value) + 1));