#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <assert.h>
#include "screen.h"
#include "demo.h"
struct screen *tunnel_screen(void);
+struct screen *fract_screen(void);
+struct screen *grise_screen(void);
+struct screen *polytest_screen(void);
+struct screen *plasma_screen(void);
+struct screen *bump_screen(void);
-#define NUM_SCR 1
+#define NUM_SCR 32
static struct screen *scr[NUM_SCR];
+static int num_screens;
static struct screen *cur, *prev, *next;
static long trans_start, trans_dur;
int scr_init(void)
{
- int i;
+ int i, idx = 0;
- if(!(scr[0] = tunnel_screen())) {
+ if(!(scr[idx++] = tunnel_screen())) {
+ return -1;
+ }
+ if(!(scr[idx++] = fract_screen())) {
+ return -1;
+ }
+ if (!(scr[idx++] = grise_screen())) {
+ return -1;
+ }
+ if(!(scr[idx++] = polytest_screen())) {
+ return -1;
+ }
+ if (!(scr[idx++] = plasma_screen())) {
+ return -1;
+ }
+ if (!(scr[idx++] = bump_screen())) {
return -1;
}
+ num_screens = idx;
+
+ assert(num_screens <= NUM_SCR);
- for(i=0; i<NUM_SCR; i++) {
+ for(i=0; i<num_screens; i++) {
if(scr[i]->init() == -1) {
return -1;
}
void scr_shutdown(void)
{
int i;
- for(i=0; i<NUM_SCR; i++) {
+ for(i=0; i<num_screens; i++) {
scr[i]->shutdown();
}
}
void scr_update(void)
{
- if(prev) { /* we're in the middle of a transition */
+ if(prev) { /* we're in the middle of a transition */
long interval = time_msec - trans_start;
if(interval >= trans_dur) {
- next->start(trans_dur);
+ if(next->start) {
+ next->start(trans_dur);
+ }
prev = 0;
cur = next;
next = 0;
struct screen *scr_lookup(const char *name)
{
int i;
- for(i=0; i<NUM_SCR; i++) {
+ for(i=0; i<num_screens; i++) {
if(strcmp(scr[i]->name, name) == 0) {
return scr[i];
}
return 0;
}
+struct screen *scr_screen(int idx)
+{
+ return scr[idx];
+}
+
+int scr_num_screens(void)
+{
+ return num_screens;
+}
+
int scr_change(struct screen *s, long trans_time)
{
if(!s) return -1;
if(s == cur) return 0;
if(trans_time) {
- trans_dur = trans_time / 2; /* half for each part transition out then in */
+ trans_dur = trans_time / 2; /* half for each part transition out then in */
trans_start = time_msec;
} else {
trans_dur = 0;
}
- if(cur) {
+ if(cur && cur->stop) {
cur->stop(trans_dur);
-
prev = cur;
next = s;
} else {
- s->start(trans_dur);
+ if(s->start) {
+ s->start(trans_dur);
+ }
cur = s;
prev = 0;