/* APPROX. 170 FPS Minimum */
#define BG_FILENAME "data/grise.png"
+#define GROBJ_01_FILENAME "data/grobj_01.png"
#define BB_SIZE 512 /* Let's use a power of 2. Maybe we'll zoom/rotate the effect */
static int init(void);
static void destroy(void);
static void start(long trans_time);
-static void stop(long trans_time);
+/*static void stop(long trans_time);*/
static void draw(void);
static void convert32To16(unsigned int *src32, unsigned short *dst16, unsigned int pixelCount);
static void initScrollTables();
static void updateScrollTables(float dt);
+static void rleEncode(unsigned char *pixels, unsigned int w, unsigned int h);
+
static unsigned short *background = 0;
static unsigned int backgroundW = 0;
static unsigned int backgroundH = 0;
static float nearScrollAmount = 0.0f;
static struct screen scr = {
- "Galaxy rise",
+ "galaxyrise",
init,
destroy,
start,
- stop,
+ 0,
draw
};
static int init(void)
{
+ unsigned char *reflectedObject;
+ int reflectedObjectW, reflectedObjectH;
+
/* Allocate back buffer */
backBuffer = (unsigned short*) malloc(BB_SIZE * BB_SIZE * sizeof(unsigned short));
+ /* grise.png contains the background (horizon), baked reflection and normalmap for displacement */
if (!(background = img_load_pixels(BG_FILENAME, &backgroundW, &backgroundH, IMG_FMT_RGBA32))) {
fprintf(stderr, "failed to load image " BG_FILENAME "\n");
return -1;
/* Convert to 16bpp */
convert32To16((unsigned int*)background, background, backgroundW * NORMALMAP_SCANLINE); /* Normalmap will keep its 32 bit color */
+ /* Load reflected objects */
+ if (!(reflectedObject = img_load_pixels(GROBJ_01_FILENAME, &reflectedObjectW, &reflectedObjectH, IMG_FMT_GREY8))) {
+ fprintf(stderr, "failed to load image " GROBJ_01_FILENAME "\n");
+ return -1;
+ }
+
+ rleEncode(reflectedObject, reflectedObjectW, reflectedObjectH);
+
+ img_free_pixels(reflectedObject);
+
initScrollTables();
processNormal();
lastFrameTime = time_msec;
}
+/* XXX add the stop function when you have an out-transition, otherwise
+ * it just delays the change to the next effect.
+ */
+/*
static void stop(long trans_time)
{
}
+*/
static void draw(void)
-{
+{
int scroll = MIN_SCROLL + (MAX_SCROLL - MIN_SCROLL) * mouse_x / fb_width;
unsigned short *dst = backBuffer + PIXEL_PADDING;
unsigned short *src = background + scroll;
src += backgroundW;
dst += BB_SIZE;
}
-
+
/* Create scroll opffsets for all scanlines of the normalmap */
updateScrollTables(lastFrameDuration);
static void updateScrollTables(float dt) {
int i = 0;
-
+
nearScrollAmount += dt * NEAR_SCROLL_SPEED;
nearScrollAmount = (float) fmod(nearScrollAmount, 512.0f);
scrollTableRounded[i] = (int)(scrollTable[i] + 0.5f) % scrollModTable[i];
}
}
+
+static void rleEncode(unsigned char *pixels, unsigned int w, unsigned int h) {
+ int scanline;
+ int i;
+ int skipping = 1;
+
+ for (scanline = 0; scanline < h; scanline++) {
+ for (i = 0; i < w; i++) {
+ if (*pixels++) {
+
+ }
+ }
+ }
+}