demosys

[andemo] / src / demosys.c

diff --git a/src/demosys.c b/src/demosys.c
new file mode 100644 (file)
index 0000000..66b4f5f
--- /dev/null
+++ b/src/demosys.c
@@ -0,0 +1,93 @@
+#include "demosys.h"
+
+static struct demoscreen *act_tail;
+
+void regscr_testa(void);
+void regscr_testb(void);
+
+int dsys_init(const char *fname)
+{
+       int i;
+
+       regscr_testa();
+       regscr_testb();
+
+       for(i=0; i<dsys_num_screens; i++) {
+               if(dsys_screens[i]->init() == -1) {
+                       fprintf(stderr, "failed to initialize demo screen: %s\n", dsys_screens[i]->name);
+                       return -1;
+               }
+       }
+
+       return 0;
+}
+
+void dsys_destroy(void)
+{
+       int i;
+
+       for(i=0; i<dsys_num_screens; i++) {
+               if(dsys_screens[i]->destroy) {
+                       dsys_screens[i]->destroy();
+               }
+       }
+       dsys_num_screens = 0;
+}
+
+struct demoscreen *dsys_find_screen(const char *name)
+{
+       int i;
+
+       for(i=0; i<dsys_num_screens; i++) {
+               if(strcmp(dsys_screens[i]->name, name) == 0) {
+                       return dsys_screens[i];
+               }
+       }
+       return 0;
+}
+
+void dsys_run_screen(struct demoscreen *scr)
+{
+       struct demoscreen *act;
+
+       if(!scr) return;
+       if(dsys_act_scr == scr && act_tail == scr) return;
+
+       act = dsys_act_scr;
+       while(act) {
+               if(act->stop) act->stop();
+               act = act->next;
+       }
+       dsys_act_scr = act_tail = scr;
+       if(scr->start) scr->start();
+}
+
+void dsys_run(void)
+{
+}
+
+void dsys_stop(void)
+{
+}
+
+void dsys_seek_abs(long tm)
+{
+}
+
+void dsys_seek_rel(long dt)
+{
+}
+
+void dsys_seek_norm(float t)
+{
+}
+
+int dsys_add_screen(struct demoscreen *scr)
+{
+       if(!scr->name || !scr->init || !scr->draw) {
+               fprintf(stderr, "dsys_add_screen: invalid screen\n");
+               return -1;
+       }
+       dsys_screens[dsys_num_screens++] = scr;
+       return 0;
+}