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, 33 insertions, 30 deletions

diff --git a/include/field.h b/include/field.h
index c63a836..4e97aa8 100644
--- a/include/field.h
+++ b/include/field.h
@@ -3,9 +3,12 @@
 
 #define SHP_ATTR_GHOST              (1 << 0)
 
+#define GHOST_SHAPE_INDEX   0
+#define ACTIVE_SHAPE_INDEX  1
+
 struct cell {
-    char a; // active/empty state of cell
-    unsigned int color;
+    char    a; // active/empty state of cell
+    size_t  color;
 };
 
 /*
@@ -26,36 +29,36 @@ struct cell {
  */
 
 struct shape {
-    struct vector2i; // position
-    int t; // shape type
-    unsigned int attr;
-    char c[4][4];
+    struct  vector2i; // position
+    int     t; // shape type
+    size_t  attr;
+    char    c[4][4];
 };
 
 struct field {
-    unsigned long    id;
-    unsigned int     attr;
-    struct vector2i  pos;
-    struct vector2ui size;
-    struct vector2ui bound;
-    struct cell    **c; // array of logic shape cells
-    unsigned int     shape_cnt;
-    struct shape    *shape;
+    size_t              id;
+    size_t              attr;
+    struct vector2i     pos;
+    struct vector2ui    size;
+    struct vector2ui    bound;
+    struct cell       **c; // array of logic shape cells
+    size_t              shape_cnt;
+    struct shape       *shape;
 };
 
-void field_init(struct field *fld);
-void field_deinit(struct field *fld);
-void field_fill_random(struct field *fld);
-void field_clear(struct field *fld);
-void field_rotate_shape_clockwise(struct field *fld, unsigned int index);
-int  field_move_shape_down(struct field *fld, unsigned int index);
-int  field_move_shape_left(struct field *fld, unsigned int index);
-int  field_move_shape_right(struct field *fld, unsigned int index);
-void field_put_shape(struct field *fld, struct shape *shape);
-void field_reset_walking_shape(struct field *fld, unsigned int index);
-int  field_rm_lines(struct field *fld);
-int  field_shape_collision(struct field *fld, struct shape *shape);
-int  field_shape_out_of_bounds(struct field *fld, struct shape *shape);
-
-void shape_load(struct shape *shape);
-void shape_gen_random(struct shape *shape);
+void    field_init(struct field *fld);
+void    field_deinit(struct field *fld);
+void    field_fill_random(struct field *fld);
+void    field_clear(struct field *fld);
+void    field_rotate_shape_clockwise(struct field *fld, size_t index);
+int     field_move_shape_down(struct field *fld, size_t index);
+int     field_move_shape_left(struct field *fld, size_t index);
+int     field_move_shape_right(struct field *fld, size_t index);
+void    field_put_shape(struct field *fld, struct shape *shape);
+void    field_reset_walking_shape(struct field *fld, size_t index);
+int     field_rm_lines(struct field *fld);
+int     field_shape_collision(struct field *fld, struct shape *shape);
+int     field_shape_out_of_bounds(struct field *fld, struct shape *shape);
+
+void    shape_load(struct shape *shape);
+void    shape_gen_random(struct shape *shape);