awesome!!!

src/input.h

@@ -0,0 +1,92 @@
+#ifndef INPUT_H
+#define INPUT_H
+
+#include "config.h"
+#include "util.h"
+
+#include <SDL2/SDL.h>
+
+#include <stdint.h>
+#include <stdbool.h>
+
+
+enum button_source {
+    BUTTON_SOURCE_NOT_SET,
+    BUTTON_SOURCE_KEYBOARD_PHYSICAL,
+    BUTTON_SOURCE_KEYBOARD_CHARACTER,
+    BUTTON_SOURCE_GAMEPAD,
+    BUTTON_SOURCE_MOUSE,
+};
+
+
+union button_code {
+    SDL_Scancode scancode;
+    SDL_Keycode keycode;
+    SDL_GameControllerButton gamepad_button;
+    uint8_t mouse_button;   /* SDL_BUTTON_ enum */
+};
+
+
+/* an input to which an action is bound */
+/* it is not limited to literal buttons */
+struct button {
+    enum button_source source;
+    union button_code code;
+};
+
+
+/* represents the collective state of a group of buttons */
+/* that is, changes in the states of any of the bound buttons will affect it */
+struct action {
+    size_t num_bindings;
+    struct button bindings[NUM_KEYBIND_SLOTS];
+    t_fvec2 position;        /* set if applicable */
+    bool is_pressed;
+    bool just_changed;
+};
+
+
+struct action_hash_item {
+    char *key;
+    struct action value;
+};
+
+
+struct input_state {
+    struct action_hash_item *action_hash;
+    SDL_Renderer *renderer; /* some input relates to the screen in some way */
+    const uint8_t *keyboard_state; /* array of booleans indexed by scancode */
+    uint32_t mouse_state;          /* SDL mouse button bitmask */
+    t_vec2 mouse_window_position;
+    enum button_source last_active_source;
+    bool is_anything_just_pressed;
+};
+
+
+void input_state_init(struct input_state *input, SDL_Renderer *renderer);
+void input_state_deinit(struct input_state *input);
+void input_state_update(struct input_state *input);
+
+void input_bind_action_scancode(struct input_state *input,
+                                char *action_name,
+                                SDL_Scancode scancode);
+void input_unbind_action_scancode(struct input_state *input,
+                                  char *action_name,
+                                  SDL_Scancode scancode);
+void input_bind_action_mouse(struct input_state *input,
+                             char *action_name,
+                             uint8_t mouse_button);
+void input_unbind_action_mouse(struct input_state *input,
+                               char *action_name,
+                               uint8_t mouse_button);
+
+void input_add_action(struct input_state *input, char *action_name);
+void input_delete_action(struct input_state *input, char *action_name);
+
+bool input_is_action_pressed(struct input_state *input, char *action_name);
+bool input_is_action_just_pressed(struct input_state *input, char *action_name);
+bool input_is_action_just_released(struct input_state *input, char *action_name);
+t_fvec2 input_get_action_position(struct input_state *input, char *action_name);
+
+
+#endif