feat: player movement

src/main.c

@@ -12,12 +12,16 @@ typedef struct {
 player_t *player_malloc(void);
 void player_free(player_t *player);
 
+int player_move_by(player_t *player, int pos_dx, int pos_dy);
+
 int screen_setup(void);
 int screen_teardown(void);
 
 int draw_map(void);
 int draw_player(player_t *player);
 
+int on_key_pressed(player_t *player, char key);
+
 int main(void)
 {
     player_t *player = player_malloc();
@@ -35,6 +39,7 @@ int main(void)
         if (key_pressed == 'q') {
             break;
         }
+        on_key_pressed(player, key_pressed);
     }
 
     screen_teardown();
@@ -88,8 +93,44 @@ void player_free(player_t *player)
     free(player);
 }
 
+int player_move_by(player_t *player, int pos_dx, int pos_dy)
+{
+    player->pos_x += pos_dx;
+    player->pos_y += pos_dy;
+    return 0;
+}
+
 int draw_player(player_t *player)
 {
     mvprintw(player->pos_y, player->pos_x, "@");
     return 0;
 }
+
+int on_key_pressed(player_t *player, char key)
+{
+    switch (key)
+    {
+        case 'w':
+        case 'W':
+            return player_move_by(player,  0, -1);
+        break;
+
+        case 's':
+        case 'S':
+            return player_move_by(player,  0, +1);
+        break;
+
+        case 'a':
+        case 'A':
+            return player_move_by(player, -1,  0);
+        break;
+
+        case 'd':
+        case 'D':
+            return player_move_by(player, +1,  0);
+        break;
+
+        default:
+            return 0;
+    }
+}