*: initial commit of whale compo

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

1 files changed, 115 insertions, 0 deletions

diff --git a/src/splash-node.c b/src/splash-node.c
new file mode 100644
index 0000000..a077d06
--- /dev/null
+++ b/src/splash-node.c
@@ -0,0 +1,115 @@
+/*
+ *  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 <SDL.h>
+
+#include "aabb.h"
+#include "whale.h"
+#include "macros.h"
+#include "v2f.h"
+#include "stage.h"
+
+typedef struct droplet_t {
+	v2f_t	trajectory;
+	v2f_t	coordinate;
+	int	dead:1;
+} droplet_t;
+
+typedef struct splash_t {
+	Uint32		color;
+	unsigned	count;
+	droplet_t	droplets[];
+	int		dead:1;
+} splash_t;
+
+
+static splash_t * splash_new(unsigned count)
+{
+	splash_t	*splash;
+	unsigned	i;
+
+	splash = calloc(1, sizeof(splash_t) + count * sizeof(droplet_t));
+	fatal_if(!splash, "Unable to allocate splash_t");
+
+	splash->count = count;
+	for (i = 0; i < count; i++) {
+		splash->droplets[i].trajectory.y = 1.f;
+		splash->droplets[i].trajectory.x = ((float)rand() * (1.0f / RAND_MAX) * .25f) - .125f;
+		splash->droplets[i].coordinate.x = 0.f;
+		splash->droplets[i].coordinate.y = -1.f;
+	}
+
+	return splash;
+}
+
+
+static void splash_render(splash_t *splash, SDL_Surface *surface)
+{
+	unsigned	i;
+
+/* TODO */
+	/* currently every time we render the splash we update it as well, they're
+	 * rolled into one */
+	for (i = 0; i < splash->count; i++) {
+
+	}
+}
+
+
+static int splash_node_render(SDL_Renderer *renderer, void *object, int width, int height, SDL_Texture **texture)
+{
+	splash_t	*splash = object;
+	SDL_Surface	*surface;
+
+	if (splash->dead)	/* TODO: expand the stage node render api to support a "delete node" return from render */
+		return 0;
+
+	if (*texture) {
+		/* cached textures are useless to softwre rendered particles */
+		SDL_DestroyTexture(*texture);
+		*texture = NULL;
+	}
+
+	splash_render(splash, surface);
+	surface = whale_svg_render((whale_svg_t *)object, width, height);
+	fatal_if(!surface, "Unable to render svg surface");
+
+	*texture = SDL_CreateTextureFromSurface(renderer, surface);
+	fatal_if(!*texture, "Unable to create texture from svg surface");
+
+	SDL_FreeSurface(surface);
+
+	return 1;
+}
+
+static void splash_node_free(void *object)
+{
+	whale_svg_free(object);
+}
+
+stage_node_t * splash_node_new(stage_t *stage, const char *name, int layer, aabb_t aabb, unsigned count)
+{
+	stage_node_t	*node;
+	splash_t	*splash;
+
+	splash = splash_new(count);
+	node = stage_node_new(stage, layer, name, splash, splash_node_render, splash_node_free);
+	fatal_if(!node, "Unable to create stage node for splash");
+
+	stage_node_set_aabb(stage, node, &aabb);
+
+	return node;
+}