Use shared memory space for game data (#14727)

Marlin/src/lcd/menu/game/invaders.h

@@ -0,0 +1,62 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#include "types.h"
+
+#define INVASION_SIZE 3
+
+#if INVASION_SIZE == 3
+  #define INVADER_COLS   5
+#elif INVASION_SIZE == 4
+  #define INVADER_COLS   6
+#else
+  #define INVADER_COLS   8
+  #undef INVASION_SIZE
+  #define INVASION_SIZE  5
+#endif
+
+#define INVADER_ROWS INVASION_SIZE
+
+#define INVADER_COL_W   14
+#define INVADER_H        8
+#define INVADER_ROW_H   (INVADER_H + 2)
+
+typedef struct { int8_t x, y, v; } laser_t;
+
+typedef struct {
+  pos_t pos;
+  uint8_t cannons_left;
+  int8_t cannon_x;
+  laser_t bullet[10], laser, explod;
+  int8_t dir, leftmost, rightmost, botmost;
+  uint8_t count, quit_count, blink_count;
+  uint8_t bugs[INVADER_ROWS], shooters[(INVADER_ROWS) * (INVADER_COLS)];
+  int8_t ufox, ufov;
+  bool game_blink;
+  int8_t laser_col() { return ((laser.x - pos.x) / (INVADER_COL_W)); };
+  int8_t laser_row() { return ((laser.y - pos.y + 2) / (INVADER_ROW_H)); };
+} invaders_data_t;
+
+class InvadersGame : MarlinGame { public: static void enter_game(), game_screen(); };
+
+extern InvadersGame invaders;