X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=fbgfx;a=blobdiff_plain;f=src%2Fscreen.c;fp=src%2Fscreen.c;h=1f1dfbe1ae1f24ee8bb96876d81773337025ef11;hp=0000000000000000000000000000000000000000;hb=70c067c2da05fb71f3d2de115cefbc225eff3667;hpb=21180fdf54f0c578af0959df088de308ce25ca61

diff --git a/src/screen.c b/src/screen.c
new file mode 100644
index 0000000..1f1dfbe
--- /dev/null
+++ b/src/screen.c
@@ -0,0 +1,85 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "screen.h"
+#include "demo.h"
+
+struct screen *console_screen(void);
+struct screen *tunnel_screen(void);
+
+#define NUM_SCR	2
+static struct screen *scr[NUM_SCR];
+
+static struct screen *cur, *prev, *next;
+static long trans_start, trans_dur;
+
+int scr_init(void)
+{
+	int i;
+
+	if(!(scr[0] = console_screen())) {
+		return -1;
+	}
+	if(!(scr[1] = tunnel_screen())) {
+		return -1;
+	}
+
+	for(i=0; i<NUM_SCR; i++) {
+		if(scr[i]->init() == -1) {
+			return -1;
+		}
+	}
+	return 0;
+}
+
+void scr_shutdown(void)
+{
+	int i;
+	for(i=0; i<NUM_SCR; i++) {
+		scr[i]->shutdown();
+	}
+}
+
+void scr_update(void)
+{
+	if(prev) {	/* we're in the middle of a transition */
+		long interval = time_msec - trans_start;
+		if(interval >= trans_dur) {
+			prev = 0;
+			cur = next;
+			next = 0;
+		}
+	}
+}
+
+void scr_draw(void)
+{
+	if(cur) cur->draw();
+}
+
+struct screen *scr_lookup(const char *name)
+{
+	int i;
+	for(i=0; i<NUM_SCR; i++) {
+		if(strcmp(scr[i]->name, name) == 0) {
+			return scr[i];
+		}
+	}
+	return 0;
+}
+
+int scr_change(struct screen *s, long trans_time)
+{
+	if(s == cur) return 0;
+
+	if(trans_time && cur) {
+		trans_dur = trans_time / 2;	/* half for each part transition out then in */
+		trans_start = time_msec;
+
+		prev = cur;
+		next = s;
+	} else {
+		cur = s;
+	}
+	return 0;
+}