better input

2 files changed, 51 insertions, 18 deletions

diff --git a/04-conway/screenshot.png b/04-conway/screenshot.png
index f262070..ccef355 100644
--- a/04-conway/screenshot.png
+++ b/04-conway/screenshot.png
diff --git a/04-conway/src/main.c b/04-conway/src/main.c
index fd591d9..75ed338 100644
--- a/04-conway/src/main.c
+++ b/04-conway/src/main.c
@@ -8,12 +8,14 @@
 
 #include <sodium.h>
 
-#define BUF_W 512
-#define BUF_H 512
+#define BUF_W 256
+#define BUF_H 256
+
+#define DISP_SCALE 3
 
 #define SEED_BITS 4096
 
-#define FPS 20.0
+#define FPS 60.0
 
 #define DO_INIT(check, desc) \
 	if (!(check)) { \
@@ -39,11 +41,14 @@ int main(int argc, char **argv)
 	uint8_t bits1[BUF_H][BUF_W / 8] = {0};
 	uint8_t bits2[BUF_H][BUF_W / 8] = {0};
 
-	uint8_t framerate = 2;
+	uint8_t framerate = 8;
 	unsigned goframes = 1;
 	unsigned x, y, sum;
 
-	bool pause = 1;
+	bool pause = true;
+	bool mouse_down = false;
+
+	ALLEGRO_MOUSE_STATE ms;
 
 	ALLEGRO_DISPLAY *d = NULL;
 	ALLEGRO_BITMAP *b = NULL;
@@ -57,16 +62,21 @@ int main(int argc, char **argv)
 	DO_INIT(al_init(), "allegro");
 	DO_INIT(al_init_primitives_addon(), "primitives");
 	DO_INIT(al_install_keyboard(), "keyboard");
+	DO_INIT(al_install_mouse(), "mouse");
 
 	DO_INIT(t = al_create_timer(1.0 / FPS), "timer");
 	DO_INIT(eq = al_create_event_queue(), "event queue");
 
 	al_set_new_display_option(ALLEGRO_SINGLE_BUFFER, 1, ALLEGRO_REQUIRE);
-	DO_INIT(d = al_create_display(2 * BUF_W, 2 * BUF_H), "display");
+	DO_INIT(d = al_create_display(
+			DISP_SCALE * BUF_W, DISP_SCALE * BUF_H
+			), "display"
+	);
 	al_set_new_bitmap_flags(ALLEGRO_MEMORY_BITMAP);
 	DO_INIT(b = al_create_bitmap(BUF_W, BUF_H), "buffer");
 
 	al_register_event_source(eq, al_get_keyboard_event_source());
+	al_register_event_source(eq, al_get_mouse_event_source());
 	al_register_event_source(eq, al_get_display_event_source(d));
 	al_register_event_source(eq, al_get_timer_event_source(t));
 
@@ -77,13 +87,6 @@ reset:
 
 	memset(bits1, 0, sizeof(bits1));
 
-	for (x = 0; x < SEED_BITS; x++) {
-		bit_set(
-			bits1[randombytes_random() % BUF_H],
-			randombytes_random() % BUF_W
-		);
-	}
-
 	while(true) {
 		al_wait_for_event(eq, &e);
 
@@ -92,18 +95,39 @@ reset:
 		case ALLEGRO_EVENT_DISPLAY_CLOSE:
 			goto done;
 
+		case ALLEGRO_EVENT_MOUSE_BUTTON_DOWN:
+			bit_set(bits1[e.mouse.y / DISP_SCALE], e.mouse.x / DISP_SCALE);
+			mouse_down = true;
+			break;
+
+		case ALLEGRO_EVENT_MOUSE_BUTTON_UP:
+			mouse_down = false;
+			break;
+
 		case ALLEGRO_EVENT_KEY_DOWN:
 			switch(e.keyboard.keycode) {
 
+			case ALLEGRO_KEY_Q:
+				goto done;
+
 			case ALLEGRO_KEY_1:
-				puts("reset");
-				goto reset;
+				framerate = (framerate == 2 ? 16 : framerate / 2);
+				printf("fps: %.1f\n", FPS / ((float)framerate) );
+				break;
 
 			case ALLEGRO_KEY_2:
-				framerate = (framerate == 1 ? 8 : framerate / 2);
-				printf("fps: %.1f\n", FPS / ((float)framerate) );
+				memset(bits1, 0, sizeof(bits1));
+				for (x = 0; x < SEED_BITS; x++) {
+					bit_set(
+						bits1[randombytes_random() % BUF_H],
+						randombytes_random() % BUF_W
+					);
+				}
 				break;
 
+			case ALLEGRO_KEY_3:
+				goto reset;
+
 			case ALLEGRO_KEY_ENTER:
 				pause = !pause;
 				printf("%s\n", pause ? "pause" : "play");
@@ -118,6 +142,11 @@ reset:
 
 		case ALLEGRO_EVENT_TIMER:
 
+			if (mouse_down) {
+				al_get_mouse_state(&ms);
+				bit_set(bits1[ms.y / 2], ms.x / 2);
+			}
+
 			if (goframes > 1) {
 				goframes--;
 				break;
@@ -167,7 +196,11 @@ reset:
 			al_unlock_bitmap(b);
 
 			al_set_target_backbuffer(d);
-			al_draw_scaled_bitmap(b, 0, 0, BUF_W, BUF_H, 0, 0, 2 * BUF_W, 2 * BUF_H, 0);
+			al_draw_scaled_bitmap(b,
+				0, 0, BUF_W, BUF_H,
+				0, 0, DISP_SCALE * BUF_W, DISP_SCALE * BUF_H,
+				0
+			);
 			al_flip_display();
 
 			goframes = framerate;