From 235e2e0783709d4a6c5fef69b99da97ac8512226 Mon Sep 17 00:00:00 2001
From: Andrei Alexeyev <0x416b617269@gmail.com>
Date: Sat, 5 Jan 2019 23:40:50 +0200
Subject: [PATCH] allow to skip credits if the game has been cleared at least
 once

closes #154
---
 src/credits.c  | 12 +++++++++++-
 src/ending.h   | 30 ++++++++++++++++++++++++++++--
 src/progress.c | 20 ++++++++++++++++++++
 src/progress.h |  3 +++
 4 files changed, 62 insertions(+), 3 deletions(-)

diff --git a/src/credits.c b/src/credits.c
index a17088f7..4d34b59e 100644
--- a/src/credits.c
+++ b/src/credits.c
@@ -26,6 +26,7 @@ static struct {
 	int ecount;
 	float panelalpha;
 	int end;
+	bool skipable;
 } credits;
 
 #define CREDITS_ENTRY_FADEIN 200.0
@@ -218,8 +219,10 @@ static void credits_init(void) {
 	stage_3d_context.crot[0] = 0;
 
 	global.frames = 0;
+
 	credits_fill();
 	credits.end += 500 + CREDITS_ENTRY_FADEOUT;
+	credits.skipable = progress_times_any_good_ending_achieved() > 0;
 
 	start_bgm("credits");
 }
@@ -424,7 +427,14 @@ static FrameAction credits_logic_frame(void *arg) {
 	events_poll(NULL, 0);
 	credits_process();
 	global.frames++;
-	return credits.end == 0 ? LFRAME_STOP : LFRAME_WAIT;
+
+	if(credits.end == 0) {
+		return LFRAME_STOP;
+	} else if(credits.skipable && gamekeypressed(KEY_SKIP)) {
+		return LFRAME_SKIP;
+	} else {
+		return LFRAME_WAIT;
+	}
 }
 
 static FrameAction credits_render_frame(void *arg) {
diff --git a/src/ending.h b/src/ending.h
index 3872ec34..7dd7b267 100644
--- a/src/ending.h
+++ b/src/ending.h
@@ -16,7 +16,7 @@ enum {
 	ENDING_FADE_TIME = 60,
 };
 
-enum {
+typedef enum EndingID {
 	// WARNING: Reordering this will break current progress files.
 
 	ENDING_BAD_1,
@@ -26,7 +26,33 @@ enum {
 	ENDING_BAD_3,
 	ENDING_GOOD_3,
 	NUM_ENDINGS,
-};
+} EndingID;
+
+#define GOOD_ENDINGS \
+	ENDING(ENDING_GOOD_1) \
+	ENDING(ENDING_GOOD_2) \
+	ENDING(ENDING_GOOD_3) \
+
+#define BAD_ENDINGS \
+	ENDING(ENDING_BAD_1) \
+	ENDING(ENDING_BAD_2) \
+	ENDING(ENDING_BAD_3) \
+
+static inline attr_must_inline bool ending_is_good(EndingID end) {
+	#define ENDING(e) (end == (e)) ||
+	return (
+		GOOD_ENDINGS
+	false);
+	#undef ENDING
+}
+
+static inline attr_must_inline bool ending_is_bad(EndingID end) {
+	#define ENDING(e) (end == (e)) ||
+	return (
+		BAD_ENDINGS
+	false);
+	#undef ENDING
+}
 
 typedef struct EndingEntry EndingEntry;
 typedef struct Ending Ending;
diff --git a/src/progress.c b/src/progress.c
index f8a5b5bf..8efb3c65 100644
--- a/src/progress.c
+++ b/src/progress.c
@@ -709,3 +709,23 @@ static void* delete_unknown_cmd(List **dest, List *elem, void *arg) {
 void progress_unload(void) {
 	list_foreach(&progress.unknown, delete_unknown_cmd, NULL);
 }
+
+uint32_t progress_times_any_ending_achieved(void) {
+	uint x = 0;
+
+	for(uint i = 0; i < NUM_ENDINGS; ++i) {
+		x += progress.achieved_endings[i];
+	}
+
+	return x;
+}
+
+uint32_t progress_times_any_good_ending_achieved(void) {
+	uint x = 0;
+
+	#define ENDING(e) x += progress.achieved_endings[e];
+	GOOD_ENDINGS
+	#undef ENDING
+
+	return x;
+}
diff --git a/src/progress.h b/src/progress.h
index d118ab4d..9c63dbd3 100644
--- a/src/progress.h
+++ b/src/progress.h
@@ -60,3 +60,6 @@ extern GlobalProgress progress;
 void progress_load(void);
 void progress_save(void);
 void progress_unload(void);
+
+uint32_t progress_times_any_ending_achieved(void);
+uint32_t progress_times_any_good_ending_achieved(void);