1 files changed, 91 insertions, 0 deletions
diff --git a/src/ei.h b/src/ei.h
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index 0000000..4772db2
--- /dev/null
+++ b/src/ei.h
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+/*
+ * Copyright (c) 2024 Richard Braun.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for
+ * any purpose with or without fee is hereby granted.
+ *
+ * THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL
+ * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE
+ * FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
+ * DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+ * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+ * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ *
+ * Embedded invaders.
+ */
+
+#ifndef EI_H
+#define EI_H
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#include "eetg.h"
+
+#define EI_FPS 50
+
+#define EI_NR_ALIEN_GROUPS 5
+#define EI_ALIEN_GROUP_SIZE 10
+#define EI_ALIEN_WIDTH 3
+
+#define EI_STATE_INTRO      0
+#define EI_STATE_PREPARED   1
+#define EI_STATE_PLAYING    2
+#define EI_STATE_GAME_OVER  3
+
+struct ei_bunker {
+    struct eetg_object object;
+    char sprite[33];
+};
+
+struct ei_alien {
+    struct eetg_object object;
+};
+
+struct ei_alien_group {
+    struct ei_alien aliens[EI_ALIEN_GROUP_SIZE];
+    const char *sprites[2];
+    char sprite[EI_ALIEN_WIDTH + 2];
+    int8_t sprite_index;
+};
+
+struct ei_game {
+    struct eetg_world world;
+    struct eetg_object title;
+    struct eetg_object help;
+    struct eetg_object start;
+    struct eetg_object player;
+    struct eetg_object player_missile;
+    struct ei_bunker bunkers[4];
+    struct ei_alien_group aliens[EI_NR_ALIEN_GROUPS];
+    struct eetg_object alien_missile;
+    struct eetg_object ufo;
+    struct eetg_object status;
+    struct eetg_object end_title;
+    int score;
+    int8_t sync_counter_reload;
+    int8_t sync_counter;
+    int8_t nr_lives;
+    int8_t player_missile_counter_reload;
+    int8_t player_missile_counter;
+    int8_t aliens_speed_counter_reload;
+    int8_t aliens_speed_counter;
+    int8_t first_alien_missile_counter;
+    int8_t alien_missile_counter_reload;
+    int8_t alien_missile_counter;
+    int8_t ufo_counter_reload;
+    int8_t ufo_counter;
+    int8_t nr_dead_aliens;
+    int8_t state;
+    bool aliens_move_left;
+    bool aliens_move_down;
+    bool ufo_moves_left;
+    char status_sprite[32];
+};
+
+void ei_game_init(struct ei_game *game, eetg_write_fn write_fn, void *arg);
+bool ei_game_process(struct ei_game *game, int8_t c);
+
+#endif /* EI_H */