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5df3071e JB |
1 | /* |
2 | * ===================================================================================== | |
3 | * | |
4 | * Filename: coordinates.c | |
5 | * | |
6 | * Description: Data definition and functions to manipulate elements in the grid | |
7 | * | |
8 | * Version: 1.0 | |
9 | * Created: 16/03/2017 19:05:02 | |
10 | * Revision: none | |
11 | * Compiler: gcc | |
12 | * | |
13 | * Author: Jerome Benoit (fraggle), jerome.benoit@piment-noir.org | |
14 | * Organization: Piment Noir | |
15 | * | |
16 | * ===================================================================================== | |
17 | */ | |
18 | ||
19 | #include "coordinates.h" | |
20 | ||
21 | void init_coordinates(coordinates_t* coordinates_array) { | |
22 | for (unsigned i = 0; i < MAX_COORDINATES; i++) { | |
23 | coordinates_array[i] = set_coordinates(0, 0, 0); | |
24 | } | |
25 | } | |
26 | ||
27 | coordinates_t set_coordinates(int y, int x, unsigned type) { | |
28 | coordinates_t new_coordinates; | |
29 | ||
30 | new_coordinates.y = y; | |
31 | new_coordinates.x = x; | |
32 | new_coordinates.type = type; | |
33 | return new_coordinates; | |
34 | } | |
35 | ||
36 | unsigned add_coordinates(coordinates_t new_coordinates, coordinates_t* coordinates_array) { | |
37 | /* valid coordinates are in the [1-3] range */ | |
38 | if (new_coordinates.y < 1 || new_coordinates.y > 3 || new_coordinates.x < 1 || new_coordinates.x > 3) { | |
39 | return 3; /* error value for invalid coordinates */ | |
40 | } | |
41 | for (unsigned i = 0; i < MAX_COORDINATES; i++) { | |
42 | /* check if already entered */ | |
43 | if (new_coordinates.y == (coordinates_array + i)->y && new_coordinates.x == (coordinates_array + i)->x) { | |
44 | return 2; /* error value for duplicates */ | |
45 | } else if ((coordinates_array + i)->y == 0 && (coordinates_array + i)->x == 0) { | |
46 | coordinates_array[i] = new_coordinates; | |
47 | return 0; /* error value when everything if fine */ | |
48 | } | |
49 | } | |
50 | return 1; /* error value for full array */ | |
51 | } |