diff --git a/source/engine/ffi.c b/source/engine/ffi.c
index 227c551..eeeedbc 100644
--- a/source/engine/ffi.c
+++ b/source/engine/ffi.c
@@ -42,6 +42,11 @@ struct gameobject *duk2go(duk_context *duk, int p)
   return id2go(duk_to_int(duk, p));
 }
 
+struct timer *duk2timer(duk_context *duk, int p)
+{
+  return id2timer(duk_to_int(duk, p));
+}
+
 struct color duk2color(duk_context *duk, int p)
 {
     struct color color;
@@ -56,6 +61,22 @@ struct color duk2color(duk_context *duk, int p)
     return color;
 }
 
+float duk_get_prop_number(duk_context *duk, int p, const char *str)
+{
+  duk_get_prop_string(duk,p,str);
+  return duk_to_number(duk,-1);
+}
+
+struct glrect duk_to_glrect(duk_context *duk, int p)
+{
+  struct glrect rect;
+  rect.s0 = duk_get_prop_number(duk,p,"s0");
+  rect.s1 = duk_get_prop_number(duk,p,"s1");
+  rect.t0 = duk_get_prop_number(duk,p,"t0");
+  rect.t1 = duk_get_prop_number(duk,p,"t1");
+  return rect;
+}
+
 cpVect duk2vec2(duk_context *duk, int p)
 {
     cpVect pos;
@@ -525,7 +546,7 @@ duk_ret_t duk_cmd(duk_context *duk) {
          break;
 
        case 12:
-         sprite_loadtex(id2sprite(duk_to_int(duk, 1)), duk_to_string(duk, 2));
+         sprite_loadtex(id2sprite(duk_to_int(duk, 1)), duk_to_string(duk, 2), duk_to_glrect(duk, 3));
          break;
 
        case 13:
@@ -573,27 +594,27 @@ duk_ret_t duk_cmd(duk_context *duk) {
          return 1;
 
        case 24:
-         timer_pause(id2timer(duk_to_int(duk, 1)));
+         timer_pause(duk2timer(duk,1));
          break;
 
        case 25:
-         timer_stop(id2timer(duk_to_int(duk, 1)));
+         timer_stop(duk2timer(duk,1));
          break;
 
        case 26:
-         timer_start(id2timer(duk_to_int(duk, 1)));
+         timer_start(duk2timer(duk,1));
          break;
 
        case 27:
-         timer_remove(id2timer(duk_to_int(duk, 1)));
+         timer_remove(duk2timer(duk,1));
          break;
 
        case 28:
-         timerr_settime(id2timer(duk_to_int(duk, 1)), duk_to_number(duk, 2));
+         timerr_settime(duk2timer(duk,1), duk_to_number(duk, 2));
          break;
 
        case 29:
-         duk_push_number(duk, id2timer(duk_to_int(duk, 1))->interval);
+         duk_push_number(duk, duk2timer(duk,1)->interval);
          return 1;
 
        case 30:
@@ -605,19 +626,19 @@ duk_ret_t duk_cmd(duk_context *duk) {
          break;
 
        case 32:
-         duk_push_number(duk, id2timer(duk_to_int(duk, 1))->remain_time);
+         duk_push_number(duk, duk2timer(duk,1)->remain_time);
          return 1;
 
        case 33:
-         duk_push_boolean(duk, ((struct timer*)duk_to_pointer(duk, 1))->on);
+         duk_push_boolean(duk, duk2timer(duk, 1)->on);
          return 1;
 
        case 34:
-         duk_push_boolean(duk, ((struct timer*)duk_to_pointer(duk, 1))->repeat);
+         duk_push_boolean(duk, duk2timer(duk,1)->repeat);
          return 1;
 
        case 35:
-         ((struct timer*)duk_to_pointer(duk, 1))->repeat = duk_to_boolean(duk, 2);
+         duk2timer(duk,1)->repeat = duk_to_boolean(duk, 2);
          return 0;
 
        case 36:
@@ -1035,7 +1056,7 @@ duk_ret_t duk_make_sprite(duk_context *duk) {
   cpVect pos = duk2vec2(duk, 2);
   int sprite = make_sprite(go);
   struct sprite *sp = id2sprite(sprite);
-  sprite_loadtex(sp, path);
+  sprite_loadtex(sp, path, ST_UNIT);
   sp->pos[0] = pos.x;
   sp->pos[1] = pos.y;
 
diff --git a/source/engine/sprite.c b/source/engine/sprite.c
index f313329..4672b78 100644
--- a/source/engine/sprite.c
+++ b/source/engine/sprite.c
@@ -74,7 +74,7 @@ void sprite_io(struct sprite *sprite, FILE *f, int read)
             if (path[i] == '\0') break;
         }
         fread(sprite, sizeof(*sprite), 1, f);
-        sprite_loadtex(sprite, path);
+        sprite_loadtex(sprite, path, ST_UNIT);
     } else {
         fputs(tex_get_path(sprite->tex), f);
         fputc('\0', f);
@@ -98,10 +98,10 @@ void sprite_draw_all()
         sprite_draw(layers[i][j]);
 }
 
-void sprite_loadtex(struct sprite *sprite, const char *path)
+void sprite_loadtex(struct sprite *sprite, const char *path, struct glrect frame)
 {
     sprite->tex = texture_loadfromfile(path);
-    sprite_setframe(sprite, &ST_UNIT);
+    sprite_setframe(sprite, &frame);
 }
 
 void sprite_settex(struct sprite *sprite, struct Texture *tex)
@@ -175,7 +175,7 @@ void sprite_draw(struct sprite *sprite)
         cpVect cpos = cpBodyGetPosition(go->body);
         float pos[2] = {cpos.x, cpos.y};
         float size[2] = { sprite->size[0] * go->scale * go->flipx, sprite->size[1] * go->scale * go->flipy };
-        tex_draw(sprite->tex, pos, cpBodyGetAngle(go->body), size, sprite->pos, *sprite->frame);
+        tex_draw(sprite->tex, pos, cpBodyGetAngle(go->body), size, sprite->pos, sprite->frame);
     }
 }
 
@@ -183,7 +183,7 @@ void sprite_setanim(struct sprite *sprite, struct TexAnim *anim, int frame)
 {
     if (!sprite) return;
     sprite->tex = anim->tex;
-    sprite->frame = &anim->st_frames[frame];
+    sprite->frame = anim->st_frames[frame];
 }
 
 void gui_draw_img(const char *img, float x, float y) {
@@ -197,7 +197,7 @@ void gui_draw_img(const char *img, float x, float y) {
 
 void sprite_setframe(struct sprite *sprite, struct glrect *frame)
 {
-    sprite->frame = frame;
+    sprite->frame = *frame;
 }
 
 void video_draw(struct datastream *stream, mfloat_t position[2], mfloat_t size[2], float rotate, mfloat_t color[3])
diff --git a/source/engine/sprite.h b/source/engine/sprite.h
index 0214677..a909242 100644
--- a/source/engine/sprite.h
+++ b/source/engine/sprite.h
@@ -6,6 +6,7 @@
 #include "mathc.h"
 #include "texture.h"
 
+
 struct datastream;
 struct gameobject;
 
@@ -17,7 +18,7 @@ struct sprite {
     int go;
     int id;
     struct Texture *tex;
-    struct glrect *frame;
+    struct glrect frame;
     int next;
     int enabled;
     int layer;
@@ -28,7 +29,7 @@ struct sprite *id2sprite(int id);
 void sprite_delete(int id);
 void sprite_enabled(int id, int e);
 void sprite_io(struct sprite *sprite, FILE *f, int read);
-void sprite_loadtex(struct sprite *sprite, const char *path);
+void sprite_loadtex(struct sprite *sprite, const char *path, struct glrect rect);
 void sprite_settex(struct sprite *sprite, struct Texture *tex);
 void sprite_setanim(struct sprite *sprite, struct TexAnim *anim, int frame);
 void sprite_setframe(struct sprite *sprite, struct glrect *frame);
diff --git a/source/engine/timer.c b/source/engine/timer.c
index 9b0067d..d170d64 100644
--- a/source/engine/timer.c
+++ b/source/engine/timer.c
@@ -5,6 +5,7 @@
 #include <stb_ds.h>
 
 struct timer *timers;
+static int first = -1;
 
 void check_timer(struct timer *t, double dt)
 {
@@ -39,11 +40,18 @@ struct timer *timer_make(double interval, void (*callback)(void *param), void *p
     new.repeat = 1;
     new.timerid = arrlen(timers);
     new.owndata = own;
-
-    timer_start(&new);
-    arrput(timers, new);
-
-    return &arrlast(timers);
+    
+    if (first <0) {
+      timer_start(&new);
+      arrput(timers, new);
+      return &arrlast(timers);
+    } else {
+      int retid = first;
+      first = id2timer(first)->next;
+      *id2timer(retid) = new;
+      timer_start(id2timer(retid));
+      return id2timer(retid);
+    }
 }
 
 void timer_pause(struct timer *t) {
@@ -54,21 +62,19 @@ void timer_pause(struct timer *t) {
 
 void timer_stop(struct timer *t) {
     if (!t->on) return;
-
     t->on = 0;
     t->remain_time = t->interval;
 }
 
 void timer_start(struct timer *t) {
     if (t->on) return;
-
     t->on = 1;
 }
 
 void timer_remove(struct timer *t) {
     int i = t->timerid;
     if (t->owndata) free(t->data);
-    arrdelswap(timers, i);
+    timers[i].timerid = 
     timers[i].timerid = i;
 }
 
@@ -80,4 +86,4 @@ void timerr_settime(struct timer *t, double interval) {
 struct timer *id2timer(int id)
 {
     return &timers[id];
-}
\ No newline at end of file
+}
diff --git a/source/engine/timer.h b/source/engine/timer.h
index ad223a9..074161e 100644
--- a/source/engine/timer.h
+++ b/source/engine/timer.h
@@ -4,12 +4,13 @@
 struct timer {
     int timerid;
     int on;
-    double interval;   // Time of timer
+    double interval; // Time of timer
     int repeat;
     double remain_time;   // How much time until the timer executes
     void (*cb)(void *data);
     void *data;
     int owndata;
+    int next;
 };
 
 struct timer *timer_make(double interval, void (*callback)(void *param), void *param, int own);