*: initial commit of whale compo

This is my contribution to our Hungrycat production
blender 2018 entry, assets to follow.

1 files changed, 120 insertions, 0 deletions

diff --git a/src/credits.c b/src/credits.c
new file mode 100644
index 0000000..c171d84
--- /dev/null
+++ b/src/credits.c
@@ -0,0 +1,120 @@
+/*
+ *  Copyright (C) 2018  Vito Caputo - <vcaputo@pengaru.com>
+ *
+ *  This program is free software: you can redistribute it and/or modify it
+ *  under the terms of the GNU General Public License version 3 as published
+ *  by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <assert.h>
+#include <SDL.h>
+#include <SDL_mixer.h>
+#include <math.h>
+
+#include "aabb.h"
+#include "macros.h"
+#include "whale.h"
+#include "stage.h"
+#include "svg-node.h"
+
+/* the opening credits */
+
+void whale_credits_event(whale_t *whale, SDL_Event *ev)
+{
+	/* no events handled in credits, their brief */
+}
+
+typedef enum credits_fsm_t {
+	CREDITS_FSM_FADEOUT,
+	CREDITS_FSM_FADEIN,
+	CREDITS_FSM_PLANETS_FADEOUT,
+	CREDITS_FSM_CREDITS_FADEOUT,
+} credits_fsm_t;
+
+void whale_credits_update(whale_t *whale)
+{
+	static stage_node_t	*bobby, *crater, *planets, *credits;
+	static unsigned		initialized;
+	static credits_fsm_t	state;
+	Uint32			now = whale_ticks(whale, WHALE_TICKS_TIMER);
+	stage_t			*stage = whale_get_stage(whale);
+
+	if (!initialized) {
+		whale_ticks_reset(whale, WHALE_TICKS_TIMER);	/* get ticks approximately aligned with credits start */
+
+		bobby = stage_node_lookup_name(stage, "bobby");
+		fatal_if(!bobby, "Unable to lookup whale node");
+
+		crater = stage_node_lookup_name(stage, "crater");
+		fatal_if(!crater, "Unable to lookup crater node");
+		
+		planets = stage_node_lookup_name(stage, "planets");
+		fatal_if(!crater, "Unable to lookup planets node");
+
+		credits = svg_node_new_file(stage, "credits", "assets/credits.svg", 0, (aabb_t){{-.8f, -.8f}, {.8f, .8f}});
+		fatal_if(!credits, "Unable to load credits svg");
+
+		now = whale_ticks(whale, WHALE_TICKS_TIMER);
+
+		initialized = 1;
+	}
+
+
+	switch (state) {
+	case CREDITS_FSM_FADEOUT:
+		if (now < 2000) {
+			float	t = 1.0f - ((float)now) * (1.0f / 2000.0f);
+
+			stage_node_set_alpha(stage, bobby, t);
+			stage_node_set_alpha(stage, crater, t);
+		} else {
+			stage_node_free(stage, bobby);
+			stage_node_free(stage, crater);
+			stage_node_set_active(stage, credits);
+			state++;
+		}
+		break;
+
+	case CREDITS_FSM_FADEIN:
+		if (now < 4000) {
+			stage_node_set_alpha(stage, planets, 1.0f - ((float)(now - 2000)) * (1.0f / 15000.0f));
+			stage_node_set_alpha(stage, credits, ((float)(now - 2000)) * (1.0f / 2000.0f));
+		} else {
+			stage_node_set_alpha(stage, credits, 1.0f);
+			state++;
+		}
+		break;
+
+	case CREDITS_FSM_PLANETS_FADEOUT:
+		if (now < 17000) {
+			stage_node_set_alpha(stage, planets, 1.0f - ((float)(now - 2000)) * (1.0f / 15000.0f));
+		} else {
+			stage_node_free(stage, planets);
+			state++;
+		}
+		break;
+
+	case CREDITS_FSM_CREDITS_FADEOUT:
+		if (now < 20000) {
+			stage_node_set_alpha(stage, credits, 1.0f - ((float)(now - 17000)) * (1.0f / 3000.0f));
+		} else {
+			stage_node_free(stage, credits);
+			exit(0);
+		}
+		break;
+
+	default:
+		assert(0);
+	}
+
+	if (!Mix_PlayingMusic() || now > 20000)
+		exit(0);
+}