working on the demosystem, added libtreestore

[andemo] / src / demosys.c

diff --git a/src/demosys.c b/src/demosys.c
index 7cefce5..41bfda1 100644 (file)
--- a/src/demosys.c
+++ b/src/demosys.c
@@ -1,15 +1,23 @@
 #include <stdio.h>
 #include <string.h>
+#include "demo.h"
 #include "demosys.h"
-
-static struct demoscreen *act_tail;
+#include "treestore.h"
+#include "assfile.h"
 
 void regscr_testa(void);
 void regscr_testb(void);
 
+static void proc_screen_script(struct demoscreen *scr, struct ts_node *node);
+static long io_read(void *buf, size_t bytes, void *uptr);
+
+
 int dsys_init(const char *fname)
 {
        int i;
+       struct ts_io io = {0};
+       struct ts_node *ts, *tsnode;
+       struct demoscreen *scr;
 
        regscr_testa();
        regscr_testb();
@@ -21,14 +29,57 @@ int dsys_init(const char *fname)
                }
        }
 
+       if(!fname || !(io.data = ass_fopen(fname, "rb"))) {
+               dsys_run_screen(dsys_screens[0]);
+               return 0;
+       }
+       io.read = io_read;
+
+       if(!(ts = ts_load_io(&io)) || strcmp(ts->name, "demo") != 0) {
+               ass_fclose(io.data);
+               fprintf(stderr, "failed to read demoscript\n");
+               return -1;
+       }
+
+       tsnode = ts->child_list;
+       while(tsnode) {
+               if(strcmp(tsnode->name, "screen") == 0 &&
+                               (scr = dsys_find_screen(ts_get_attr_str(tsnode, "name", 0)))) {
+                       proc_screen_script(scr, tsnode);
+               }
+               tsnode = tsnode->next;
+       }
+
+       ass_fclose(io.data);
        return 0;
 }
 
+static void proc_screen_script(struct demoscreen *scr, struct ts_node *node)
+{
+       struct ts_attr *attr;
+       long tm;
+
+       attr = node->attr_list;
+       while(attr) {
+               if(sscanf(attr->name, "key_%ld", &tm) == 1 && attr->val.type == TS_NUMBER) {
+                       anm_set_value(&scr->track, tm, attr->val.fnum);
+               }
+               attr = attr->next;
+       }
+}
+
+static long io_read(void *buf, size_t bytes, void *uptr)
+{
+       return ass_fread(buf, 1, bytes, uptr);
+}
+
+
 void dsys_destroy(void)
 {
        int i;
 
        for(i=0; i<dsys_num_screens; i++) {
+               anm_destroy_track(&dsys_screens[i]->track);
                if(dsys_screens[i]->destroy) {
                        dsys_screens[i]->destroy();
                }
@@ -36,32 +87,57 @@ void dsys_destroy(void)
        dsys_num_screens = 0;
 }
 
-struct demoscreen *dsys_find_screen(const char *name)
+void dsys_update(void)
 {
-       int i;
+       int i, j, sort_needed = 0;
+       struct demoscreen *scr;
 
+       dsys_time = time_msec;
+
+       dsys_num_act = 0;
        for(i=0; i<dsys_num_screens; i++) {
-               if(strcmp(dsys_screens[i]->name, name) == 0) {
-                       return dsys_screens[i];
+               scr = dsys_screens[i];
+               scr->vis = anm_get_value(&scr->track, dsys_time);
+
+               if(scr->vis > 0.0f) {
+                       if(!scr->active) {
+                               if(scr->start) scr->start();
+                               scr->active = 1;
+                       }
+                       if(scr->update) scr->update(dsys_time);
+
+                       if(dsys_num_act && scr->prio != dsys_act[dsys_num_act - 1]->prio) {
+                               sort_needed = 1;
+                       }
+                       dsys_act[dsys_num_act++] = scr;
+               } else {
+                       if(scr->active) {
+                               if(scr->stop) scr->stop();
+                               scr->active = 0;
+                       }
+               }
+       }
+
+       if(sort_needed) {
+               for(i=0; i<dsys_num_act; i++) {
+                       for(j=i+1; j<dsys_num_act; j++) {
+                               if(dsys_act[j]->prio > dsys_act[j - 1]->prio) {
+                                       void *tmp = dsys_act[j];
+                                       dsys_act[j] = dsys_act[j - 1];
+                                       dsys_act[j - 1] = tmp;
+                               }
+                       }
                }
        }
-       return 0;
 }
 
-void dsys_run_screen(struct demoscreen *scr)
+/* TODO: do something about draw ordering of the active screens */
+void dsys_draw(void)
 {
-       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;
+       int i;
+       for(i=0; i<dsys_num_act; i++) {
+               dsys_act[i]->draw();
        }
-       dsys_act_scr = act_tail = scr;
-       if(scr->start) scr->start();
 }
 
 void dsys_run(void)
@@ -84,12 +160,55 @@ void dsys_seek_norm(float t)
 {
 }
 
+
+struct demoscreen *dsys_find_screen(const char *name)
+{
+       int i;
+
+       if(!name) return 0;
+
+       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)
+{
+       int i;
+
+       if(!scr) return;
+       if(dsys_num_act == 1 && dsys_act[0] == scr) return;
+
+       for(i=0; i<dsys_num_act; i++) {
+               if(dsys_act[i]->stop) dsys_act[i]->stop();
+               dsys_act[i]->active = 0;
+       }
+
+       dsys_act[0] = scr;
+       dsys_num_act = 1;
+
+       if(scr->start) scr->start();
+       scr->active = 1;
+}
+
+
 int dsys_add_screen(struct demoscreen *scr)
 {
        if(!scr->name || !scr->init || !scr->draw) {
                fprintf(stderr, "dsys_add_screen: invalid screen\n");
                return -1;
        }
+       if(anm_init_track(&scr->track) == -1) {
+               fprintf(stderr, "dsys_add_screen: failed to initialize keyframe track\n");
+               return -1;
+       }
+       anm_set_track_interpolator(&scr->track, ANM_INTERP_LINEAR);
+       anm_set_track_extrapolator(&scr->track, ANM_EXTRAP_EXTEND);
+       anm_set_track_default(&scr->track, 0);
+
        dsys_screens[dsys_num_screens++] = scr;
        return 0;
 }