Input functions macros (DRY)

include/input.h

@@ -4,6 +4,8 @@
 #include <gint/defs/types.h>
 #include <stdbool.h>
 
+#include "input_macro.h"
+
 #define KEYS_COUNT 6
 
 enum {
@@ -38,6 +40,8 @@ void input_init(Input *input);
 void input_draw_debug(Input *input);
 
 bool input_is_pressed(Input *input, uint8_t key);
+/* Return duration since the last time key was pressed. */
+uint input_last_press(Input *input, uint8_t key, uint step);
 bool input_is_down(Input *input, uint8_t key);
 bool input_is_released(Input *input, uint8_t key);
 bool input_is_up(Input *input, uint8_t key);

include/input_macro.h

@@ -0,0 +1,12 @@
+/* Create macros for the input system. */
+
+#ifndef _DEF_INPUT_MACRO
+#define _DEF_INPUT_MACRO
+
+#define INPUT_PRESSED(key) input_is_pressed(input, key)
+#define INPUT_LAST_PRESS(key) input_last_press(input, key, step)
+#define INPUT_DOWN(key) input_is_down(input, key)
+#define INPUT_RELEASED(key) input_is_released(input, key)
+#define INPUT_UP(key) input_is_up(input, key)
+
+#endif /* _DEF_INPUT_MACRO */

src/input.c

@@ -59,6 +59,10 @@ bool input_is_pressed(Input *input, uint8_t key) {
 	return input->states[key] == S_PRESSED;
 }
 
+uint input_last_press(Input *input, uint8_t key, uint step) {
+	return input->last_press[key] - step;
+}
+
 bool input_is_down(Input *input, uint8_t key) {
 	return (input->states[key] == S_DOWN) || (input->states[key] == S_PRESSED);
 }

src/player.c

@@ -59,11 +59,11 @@ void player_step(Player *player, Input *input, const Level *level) {
 	 * i.e., if the player hold left and down move will have
 	 * move.x = -1 and move.y = 1. */
 	Vec move = {
-		(input_is_down(input, K_RIGHT) - input_is_down(input, K_LEFT)),
-		(input_is_down(input, K_DOWN) - input_is_down(input, K_UP))
+		(INPUT_DOWN(K_RIGHT) - INPUT_DOWN(K_LEFT)),
+		(INPUT_DOWN(K_DOWN) - INPUT_DOWN(K_UP))
 	};
 	/* other keys */
-	bool kp_jump = input_is_pressed(input, K_JUMP);
+	bool kp_jump = INPUT_PRESSED(K_JUMP);
 	int xacc = move.x * ACCELERATION; /* calculate horizontal acceleration */
 	player->spd.x *= FRICTION; /* apply horizontal friction */
 	player->spd.x += xacc; /* apply horizontal acceleration */