diff --git a/Makefile b/Makefile
index d45774b..4d95d4c 100755
--- a/Makefile
+++ b/Makefile
@@ -50,8 +50,10 @@ ifdef NQOA
   CPPFLAGS += -DNQOA
 endif
 
+CPPFLAGS += -ffast-math
+
 ifeq ($(DBG),1)
-  CPPFLAGS += -g #-fsanitize=address
+  CPPFLAGS += -g -fsanitize=address
   INFO += _dbg
 else
   CPPFLAGS += -DNDEBUG
@@ -76,7 +78,7 @@ else
   endif
 endif
 
-CPPFLAGS += -DHAVE_CEIL -DCP_USE_CGTYPES=0 -DCP_USE_DOUBLES=0 -DTINYSPLINE_FLOAT_PRECISION -DHAVE_FLOOR -DHAVE_FMOD -DHAVE_LRINT -DHAVE_LRINTF $(includeflag) -MD $(WARNING_FLAGS) -I. -DVER=\"$(VER)\" -DINFO=\"$(INFO)\" #-DENABLE_SINC_MEDIUM_CONVERTER -DENABLE_SINC_FAST_CONVERTER
+CPPFLAGS += -DHAVE_CEIL -DCP_USE_CGTYPES=0 -DCP_USE_DOUBLES=0 -DTINYSPLINE_FLOAT_PRECISION -DHAVE_FLOOR -DHAVE_FMOD -DHAVE_LRINT -DHAVE_LRINTF $(includeflag) -MD $(WARNING_FLAGS) -I. -DVER=\"$(VER)\" -DINFO=\"$(INFO)\" #-DENABLE_SINC_MEDIUM_CONVERTER -DENABLE_SINC_FAST_CONVERTER -DCP_COLLISION_TYPE_TYPE=uintptr_t -DCP_BITMASK_TYPE=uintptr_t
 
 # ENABLE_SINC_[BEST|FAST|MEDIUM]_CONVERTER
 # default, fast and medium available in game at runtime; best available in editor
@@ -166,7 +168,7 @@ ifdef STEAM
 #  BIN += /steam
 endif
 
-WARNING_FLAGS = -Wno-incompatible-function-pointer-types -Wno-incompatible-pointer-types -Wno-unused-function -Wno-unused-const-variable -Wno-address-of-temporary
+WARNING_FLAGS = -Wno-incompatible-function-pointer-types
 
 NAME = primum$(EXT)
 SEM = 0.0.1
diff --git a/scripts/engine.js b/scripts/engine.js
index 356e316..f678c9b 100644
--- a/scripts/engine.js
+++ b/scripts/engine.js
@@ -523,6 +523,7 @@ function world_start() {
   };
   Primum.toString = function() { return "Primum"; };
   Primum.ur = undefined;
+  Primum.kill = function() { this.clear(); };
 }
 
 load("scripts/physics.js");
diff --git a/source/engine/2dphysics.c b/source/engine/2dphysics.c
index 6582c84..695016d 100644
--- a/source/engine/2dphysics.c
+++ b/source/engine/2dphysics.c
@@ -62,7 +62,7 @@ int p_compare(void *a, void *b)
 {
   if (a > b) return 1;
   if (a < b) return -1;
-  if (a == b) return 0;
+  return 0;
 }
 
 gameobject **clean_ids(gameobject **ids)
@@ -105,7 +105,7 @@ int *phys2d_query_box_points(HMM_Vec2 pos, HMM_Vec2 wh, HMM_Vec2 *points, int n)
 }
 
 /* Return all gameobjects within the given box */
-gameobject *phys2d_query_box(HMM_Vec2 pos, HMM_Vec2 wh) {
+gameobject **phys2d_query_box(HMM_Vec2 pos, HMM_Vec2 wh) {
   cpShape *box = cpBoxShapeNew(NULL, wh.x, wh.y, 0.f);
   cpTransform T = {0};
   T.a = 1;
@@ -128,7 +128,7 @@ gameobject *phys2d_query_box(HMM_Vec2 pos, HMM_Vec2 wh) {
   return clean_ids(qb.ids);
 }
 
-gameobject *phys2d_query_shape(struct phys2d_shape *shape)
+gameobject **phys2d_query_shape(struct phys2d_shape *shape)
 {
   gameobject **ids = NULL;
   cpSpaceShapeQuery(space, shape->shape, querylist, ids);
@@ -184,7 +184,7 @@ void init_phys2dshape(struct phys2d_shape *shape, gameobject *go, void *data) {
   shape->data = data;
   shape->t.scale = (HMM_Vec2){1.0,1.0};
   go_shape_apply(go->body, shape->shape, go);
-  cpShapeSetCollisionType(shape->shape, (int)go);
+  cpShapeSetCollisionType(shape->shape, (cpCollisionType)go);
   cpShapeSetUserData(shape->shape, shape);
 }
 
@@ -221,7 +221,7 @@ void phys2d_circledel(struct phys2d_circle *c) {
   phys2d_shape_del(&c->shape);
 }
 
-void phys2d_dbgdrawcpcirc(cpCircleShape *c) {
+void phys2d_dbgdrawcpcirc(cpShape *c) {
   HMM_Vec2 pos = mat_t_pos(t_go2world(shape2go(c)), (HMM_Vec2)cpCircleShapeGetOffset(c));
   float radius = cpCircleShapeGetRadius(c);
   struct rgba color = shape_color(c);
@@ -232,7 +232,7 @@ void phys2d_dbgdrawcpcirc(cpCircleShape *c) {
 }
 
 void phys2d_dbgdrawcircle(struct phys2d_circle *circle) {
-  phys2d_dbgdrawcpcirc((cpCircleShape *)circle->shape.shape);
+  phys2d_dbgdrawcpcirc(circle->shape.shape);
 }
 
 void phys2d_applycircle(struct phys2d_circle *circle) {
@@ -308,7 +308,7 @@ struct phys2d_poly *Make2DPoly(gameobject *go) {
   arrsetlen(new->points, 0);
   new->radius = 0.f;
 
-  new->shape.shape = cpSpaceAddShape(space, cpPolyShapeNewRaw(go->body, 0, new->points, new->radius));
+  new->shape.shape = cpSpaceAddShape(space, cpPolyShapeNewRaw(go->body, 0, (cpVect*)new->points, new->radius));
   new->shape.debugdraw = phys2d_dbgdrawpoly;
   new->shape.moi = phys2d_poly_moi;
   new->shape.apply = phys2d_applypoly;
@@ -317,7 +317,7 @@ struct phys2d_poly *Make2DPoly(gameobject *go) {
 }
 
 float phys2d_poly_moi(struct phys2d_poly *poly, float m) {
-  float moi = cpMomentForPoly(m, arrlen(poly->points), poly->points, cpvzero, poly->radius);
+  float moi = cpMomentForPoly(m, arrlen(poly->points), (cpVect*)poly->points, cpvzero, poly->radius);
   if (isnan(moi)) {
 //    YughError("Polygon MOI returned an error. Returning 0.");
     return 0;
@@ -335,16 +335,14 @@ void phys2d_polyaddvert(struct phys2d_poly *poly) {
   arrput(poly->points, v2zero);
 }
 
-void phys2d_poly_setverts(struct phys2d_poly *poly, cpVect *verts) {
+void phys2d_poly_setverts(struct phys2d_poly *poly, HMM_Vec2 *verts) {
   if (!verts) return;
   if (poly->points)
     arrfree(poly->points);
   arrsetlen(poly->points, arrlen(verts));
   
-  for (int i = 0; i < arrlen(verts); i++) {
-    poly->points[i].X = verts[i].x;
-    poly->points[i].Y = verts[i].y;
-  }
+  for (int i = 0; i < arrlen(verts); i++)
+    poly->points[i] = verts[i];
     
   phys2d_applypoly(poly);
 }
@@ -354,7 +352,7 @@ void phys2d_applypoly(struct phys2d_poly *poly) {
   assert(sizeof(poly->points[0]) == sizeof(cpVect));
   struct gameobject *go = poly->shape.go;
 //  cpTransform T = m3_to_cpt(transform2d2mat(poly->t));
-  cpPolyShapeSetVerts(poly->shape.shape, arrlen(poly->points), poly->points, cpTransformIdentity);
+  cpPolyShapeSetVerts(poly->shape.shape, arrlen(poly->points), (cpVect*)poly->points, cpTransformIdentity);
   cpPolyShapeSetRadius(poly->shape.shape, poly->radius);
   cpSpaceReindexShapesForBody(space, cpShapeGetBody(poly->shape.shape));
 }
@@ -634,14 +632,14 @@ static cpBool script_phys_cb_separate(cpArbiter *arb, cpSpace *space, void *data
 }
 
 void phys2d_rm_go_handlers(gameobject *go) {
-  cpCollisionHandler *handler = cpSpaceAddWildcardHandler(space, (int)go);
+  cpCollisionHandler *handler = cpSpaceAddWildcardHandler(space, (cpCollisionType)go);
   handler->userData = NULL;
   handler->beginFunc = NULL;
   handler->separateFunc = NULL;
 }
 
 void phys2d_setup_handlers(gameobject *go) {
-  cpCollisionHandler *handler = cpSpaceAddWildcardHandler(space, (int)go);
+  cpCollisionHandler *handler = cpSpaceAddWildcardHandler(space, (cpCollisionType)go);
   handler->userData = go;
   handler->beginFunc = script_phys_cb_begin;
   handler->separateFunc = script_phys_cb_separate;
diff --git a/source/engine/2dphysics.h b/source/engine/2dphysics.h
index 691ab6c..23e42e6 100644
--- a/source/engine/2dphysics.h
+++ b/source/engine/2dphysics.h
@@ -86,7 +86,7 @@ void phys2d_polydel(struct phys2d_poly *poly);
 void phys2d_applypoly(struct phys2d_poly *poly);
 void phys2d_dbgdrawpoly(struct phys2d_poly *poly);
 void phys2d_polyaddvert(struct phys2d_poly *poly);
-void phys2d_poly_setverts(struct phys2d_poly *poly, cpVect *verts);
+void phys2d_poly_setverts(struct phys2d_poly *poly, HMM_Vec2 *verts);
 float phys2d_poly_moi(struct phys2d_poly *poly, float m);
 
 struct phys2d_edge *Make2DEdge(gameobject *go);
@@ -108,7 +108,7 @@ void phys2d_edge_set_enabled(struct phys2d_edge *edge, int enabled);
 void phys2d_init();
 void phys2d_update(float deltaT);
 cpShape *phys2d_query_pos(cpVect pos);
-gameobject *phys2d_query_box(HMM_Vec2 pos, HMM_Vec2 wh);
+gameobject **phys2d_query_box(HMM_Vec2 pos, HMM_Vec2 wh);
 
 
 struct shape_cb {
@@ -130,7 +130,7 @@ struct rgba shape_color_s(cpShape *shape);
 
 void shape_gui(struct phys2d_shape *shape);
 void phys2d_setup_handlers(gameobject *go);
-gameobject *phys2d_query_shape(struct phys2d_shape *shape);
+gameobject **phys2d_query_shape(struct phys2d_shape *shape);
 int *phys2d_query_box_points(HMM_Vec2 pos, HMM_Vec2 wh, HMM_Vec2 *points, int n);
 
 void flush_collide_cbs();
diff --git a/source/engine/3d/model.c b/source/engine/3d/model.c
index cd0fe11..a565766 100644
--- a/source/engine/3d/model.c
+++ b/source/engine/3d/model.c
@@ -6,7 +6,6 @@
 #include "font.h"
 #include "window.h"
 #include "gameobject.h"
-#include "libgen.h"
 
 //#include "diffuse.sglsl.h"
 #include "unlit.sglsl.h"
@@ -144,7 +143,7 @@ void mesh_add_material(mesh *mesh, cgltf_material *mat)
        cgltf_buffer_view *buf = img->buffer_view;
        mesh->bind.fs.images[0] = texture_fromdata(buf->buffer->data, buf->size)->id;
      } else {
-       const char *imp = seprint("%s/%s", dirname(mesh->model->path), img->uri);
+       char *imp = seprint("%s/%s", dirname(mesh->model->path), img->uri);
        mesh->bind.fs.images[0] = texture_pullfromfile(imp)->id;
        free(imp);
      }
@@ -258,6 +257,9 @@ void mesh_add_primitive(mesh *mesh, cgltf_primitive *prim)
     case cgltf_attribute_type_texcoord:
       mesh->bind.vertex_buffers[1] = texcoord_floats(vs, verts, comp);
       break;
+    case cgltf_attribute_type_invalid:
+      YughWarn("Invalid type.");
+      break;
     }
   }
 /*
diff --git a/source/engine/anim.c b/source/engine/anim.c
index 66db0bc..0cc8fa0 100644
--- a/source/engine/anim.c
+++ b/source/engine/anim.c
@@ -39,7 +39,6 @@ HMM_Vec4 sample_sampler(sampler *sampler, float time)
   float td = sampler->times[next_time]-sampler->times[previous_time];
   float t = (time - sampler->times[previous_time])/td;
 
-  
   switch(sampler->type) {
     case LINEAR:
       return sample_linear(sampler,t,previous_time,next_time);
@@ -51,4 +50,5 @@ HMM_Vec4 sample_sampler(sampler *sampler, float time)
       return sample_cubicspline(sampler,t, previous_time, next_time);
       break;
   }
+  return sample_cubicspline(sampler,t, previous_time, next_time);  
 }
diff --git a/source/engine/debug/debug.c b/source/engine/debug/debug.c
index c3846fb..25f50f8 100644
--- a/source/engine/debug/debug.c
+++ b/source/engine/debug/debug.c
@@ -8,17 +8,35 @@ unsigned long long triCount = 0;
 
 void prof_start(struct d_prof *prof)
 {
-#ifndef NDEBUG
-  prof->lap = stm_now();
-#endif
+  arrsetlen(prof->ms, prof->laps);
 }
 
-void prof(struct d_prof *prof)
+void prof_reset(struct d_prof *prof)
 {
-#ifndef NDEBUG
+  prof->lap = stm_now();
+}
+
+float prof_lap_avg(struct d_prof *prof)
+{
+  float avg;
+  for (int i = 0; i < arrlen(prof->ms); i++)
+    avg += prof->ms[i];
+
+  avg /= arrlen(prof->ms);
+  return avg;
+}
+
+void prof_lap(struct d_prof *prof)
+{
+  if (prof->ms == NULL)
+    prof_start(prof);
+    
+  if (arrlen(prof->ms) >= prof->laps) {
+    YughWarn("Profiled time of %s is avg %g", prof->name, prof_lap_avg(prof));
+    arrsetlen(prof->ms, 0);
+  }
   uint64_t t = stm_since(prof->lap);
   arrput(prof->ms, stm_sec(t));
-#endif
 }
 
 void resetTriangles()
diff --git a/source/engine/debug/debug.h b/source/engine/debug/debug.h
index d9b75fe..1c186bc 100644
--- a/source/engine/debug/debug.h
+++ b/source/engine/debug/debug.h
@@ -1,21 +1,20 @@
 #ifndef DEBUG_GUI_H
 #define DEBUG_GUI_H
 
-//#ifndef static_assert
-//#define static_assert(pred) switch(0){case 0:case pred:;}
-//#endif
-
 #include <stdint.h>
 
 struct d_prof {
   char *name;
   float *ms;
   uint64_t lap;
+  int laps;
 };
 
 extern unsigned long long triCount;
 void resetTriangles();
 void prof_start(struct d_prof *prof);
-void prof(struct d_prof *prof);
+void prof_reset(struct d_prof *prof);
+void prof_lap(struct d_prof *prof);
+float prof_lap_avg(struct d_prof *prof);
 
 #endif
diff --git a/source/engine/debug/debugdraw.c b/source/engine/debug/debugdraw.c
index d53df7e..c00be88 100644
--- a/source/engine/debug/debugdraw.c
+++ b/source/engine/debug/debugdraw.c
@@ -292,7 +292,6 @@ void debugdraw_init()
     .cull_mode = SG_CULLMODE_BACK,
     .label = "grid pipeline",
     .colors[0].blend = blend_trans,
-    .label = "dbg grid",
   });
   
   grid_bind.vertex_buffers[0] = circle_bind.vertex_buffers[1];
diff --git a/source/engine/font.c b/source/engine/font.c
index 07bd8c9..794742e 100644
--- a/source/engine/font.c
+++ b/source/engine/font.c
@@ -118,7 +118,7 @@ struct sFont *MakeFont(const char *fontfile, int height) {
   struct sFont *newfont = calloc(1, sizeof(struct sFont));
   newfont->height = height;
 
-  unsigned char *ttf_buffer = slurp_text(fontfile, NULL);
+  unsigned char *ttf_buffer = slurp_file(fontfile, NULL);
   unsigned char *bitmap = malloc(packsize * packsize);
 
   stbtt_packedchar glyphs[95];
@@ -251,7 +251,7 @@ void text_settype(struct sFont *mfont) {
   font = mfont;
 }
 
-unsigned char *esc_color(unsigned char *c, struct rgba *color, struct rgba defc)
+const char *esc_color(const char *c, struct rgba *color, struct rgba defc)
 {
   struct rgba d;
   if (!color) color = &d;
@@ -278,13 +278,13 @@ unsigned char *esc_color(unsigned char *c, struct rgba *color, struct rgba defc)
   return c;
 }
 
-struct boundingbox text_bb(const unsigned char *text, float scale, float lw, float tracking)
+struct boundingbox text_bb(const char *text, float scale, float lw, float tracking)
 {
   struct rgba dummy;
   HMM_Vec2 cursor = {0,0};
-  const unsigned char *c = text;
-  const unsigned char *line, *wordstart, *drawstart;
-  line = drawstart = (unsigned char *)text;
+  const char *c = text;
+  const char *line, *wordstart, *drawstart;
+  line = drawstart = text;
 
   while (*line != '\0') {
     if (isblank(*line)) {
@@ -332,13 +332,13 @@ void check_caret(int caret, int l, HMM_Vec2 pos, float scale, struct rgba color)
 
 
 /* pos given in screen coordinates */
-int renderText(const unsigned char *text, HMM_Vec2 pos, float scale, struct rgba color, float lw, int caret, float tracking) {
+int renderText(const char *text, HMM_Vec2 pos, float scale, struct rgba color, float lw, int caret, float tracking) {
   int len = strlen(text);
 
   HMM_Vec2 cursor = pos;
 
-  const unsigned char *line, *wordstart, *drawstart;
-  line = drawstart = (unsigned char *)text;
+  const char *line, *wordstart, *drawstart;
+  line = drawstart = text;
 
   struct rgba usecolor = color;
   check_caret(caret, line-drawstart, cursor, scale, usecolor);
diff --git a/source/engine/font.h b/source/engine/font.h
index a56c544..6a7ded4 100644
--- a/source/engine/font.h
+++ b/source/engine/font.h
@@ -33,8 +33,8 @@ void font_init();
 struct sFont *MakeFont(const char *fontfile, int height);
 void sdrawCharacter(struct Character c, HMM_Vec2 cursor, float scale, struct rgba color);
 void text_settype(struct sFont *font);
-struct boundingbox text_bb(const unsigned char *text, float scale, float lw, float tracking);
-int renderText(const unsigned char *text, HMM_Vec2 pos, float scale, struct rgba color, float lw, int caret, float tracking);
+struct boundingbox text_bb(const char *text, float scale, float lw, float tracking);
+int renderText(const char *text, HMM_Vec2 pos, float scale, struct rgba color, float lw, int caret, float tracking);
 
 // void text_frame();
 void text_flush(HMM_Mat4 *proj);
diff --git a/source/engine/freelist.h b/source/engine/freelist.h
index ac899a7..3baf337 100644
--- a/source/engine/freelist.h
+++ b/source/engine/freelist.h
@@ -13,9 +13,9 @@ struct freelistheader
 };
 
 #define freelist_header(p) ((struct freelistheader*)p-1)
-static inline void *freelist_make(struct freelistheader *list, size_t elemsize, unsigned int n)
+static inline void *freelist_make(size_t elemsize, unsigned int n)
 {
-  list = malloc(elemsize*n*sizeof(struct freelistheader));
+  struct freelistheader *list = malloc(elemsize*n*sizeof(struct freelistheader));
   list->first = 0;
   list->len = n;
   list->count = 0;
@@ -29,7 +29,7 @@ static inline unsigned int freelist_check(struct freelistheader *h, void *data,
   return id;
 }
 
-#define freelist_size(p,l) do{p = freelist_make(p,sizeof(*p),l); for(int i = 0; i < l; i++) { p[i].next = i+1; }}while(0)
+#define freelist_size(p,l) do{p = freelist_make(sizeof(*p),l); for(int i = 0; i < l; i++) { p[i].next = i+1; }}while(0)
 #define freelist_len(p) (freelist_header(p)->len)
 #define freelist_first(p) (freelist_header(p)->first)
 #define freelist_grab(i,p) do{i=freelist_header(p)->first; freelist_header(p)->first = p[i].next; p[i].next = -1;freelist_header(p)->count++;}while(0)
diff --git a/source/engine/gameobject.c b/source/engine/gameobject.c
index 91d978a..83419e2 100644
--- a/source/engine/gameobject.c
+++ b/source/engine/gameobject.c
@@ -77,10 +77,10 @@ unsigned int editor_cat = 1<<31;
 void go_shape_apply(cpBody *body, cpShape *shape, gameobject *go) {
   cpShapeSetFriction(shape, go->f);
   cpShapeSetElasticity(shape, go->e);
-  cpShapeSetCollisionType(shape, (int)go);
+  cpShapeSetCollisionType(shape, (cpCollisionType)go);
 
   cpShapeFilter filter;
-  filter.group = (int)go;
+  filter.group = (cpCollisionType)go;
   filter.categories = 1<<go->layer | editor_cat;
 //  filter.mask = CP_ALL_CATEGORIES;
   filter.mask = category_masks[go->layer] | editor_cat;
diff --git a/source/engine/jsffi.c b/source/engine/jsffi.c
index 3b1659f..7304fb9 100644
--- a/source/engine/jsffi.c
+++ b/source/engine/jsffi.c
@@ -140,7 +140,7 @@ JSValue int2js(int i) { return JS_NewInt64(js, i); }
 JSValue str2js(const char *c) { return JS_NewString(js, c); }
 const char *js2str(JSValue v) { return JS_ToCString(js, v); }
 
-JSValue strarr2js(const char **c)
+JSValue strarr2js(char **c)
 {
   JSValue arr = JS_NewArray(js);
   for (int i = 0; i < arrlen(c); i++)
@@ -306,7 +306,7 @@ JSValue vecarr2js(HMM_Vec2 *points, int n) {
 }
 
 JSValue duk_ui_text(JSContext *js, JSValueConst this, int argc, JSValueConst *argv) {
-  const unsigned char *s = JS_ToCString(js, argv[0]);
+  const char *s = JS_ToCString(js, argv[0]);
   HMM_Vec2 pos = js2vec2(argv[1]);
 
   float size = js2number(argv[2]);
@@ -497,10 +497,11 @@ JSValue duk_cmd(JSContext *js, JSValueConst this, int argc, JSValueConst *argv)
   int cmd = js2int(argv[0]);
   const char *str = NULL;
   const char *str2 = NULL;
-  const void *d1 = NULL;
-  const void *d2 = NULL;
-  const void *v1 = NULL;
-  gameobject *ids = NULL;
+  void *d1 = NULL;
+  void *d2 = NULL;
+  void *v1 = NULL;
+  gameobject **ids = NULL;
+  int *intids = NULL;
   gameobject *go = NULL;
   JSValue ret = JS_UNDEFINED;
 
@@ -874,9 +875,9 @@ JSValue duk_cmd(JSContext *js, JSValueConst this, int argc, JSValueConst *argv)
 
   case 86:
     v1 = js2cpvec2arr(argv[3]);
-    ids = phys2d_query_box_points(js2vec2(argv[1]), js2vec2(argv[2]), v1, js2int(argv[4]));
-    ret = gos2ref(ids);
-    arrfree(ids);
+    intids = phys2d_query_box_points(js2vec2(argv[1]), js2vec2(argv[2]), v1, js2int(argv[4]));
+    ret = ints2js(intids);
+    arrfree(intids);
     break;
 
   case 87:
diff --git a/source/engine/render.c b/source/engine/render.c
index 839c6b6..d0a66bb 100644
--- a/source/engine/render.c
+++ b/source/engine/render.c
@@ -42,7 +42,7 @@ static struct {
   double timer;
   double spf;
   int rec;
-  char *buffer;
+  uint8_t *buffer;
 } gif;
 
 static struct {
@@ -95,7 +95,7 @@ void gif_rec_start(int w, int h, int cpf, int bitdepth)
   });
 }
 
-void gif_rec_end(char *path)
+void gif_rec_end(const char *path)
 {
   if (!gif.rec) return;
   
@@ -109,7 +109,7 @@ void gif_rec_end(char *path)
   gif.rec = 0;
 }
 
-void capture_screen(int x, int y, int w, int h, char *path)
+void capture_screen(int x, int y, int w, int h, const char *path)
 {
   int n = 4;
   void *data = malloc(w*h*n);
@@ -297,7 +297,7 @@ void render_init() {
 
   model_init();
   sg_color c;
-  rgba2floats(&c, editorClearColor);
+  rgba2floats((float*)&c, editorClearColor);
   pass_action = (sg_pass_action){
     .colors[0] = {.load_action = SG_LOADACTION_CLEAR, .clear_value = c}
   };
diff --git a/source/engine/render.h b/source/engine/render.h
index 9b01ef4..b9ae5e6 100644
--- a/source/engine/render.h
+++ b/source/engine/render.h
@@ -70,7 +70,7 @@ void opengl_rendermode(enum RenderMode r);
 
 void openglInit3d(struct window *window);
 void openglRender3d(struct window *window, struct mCamera *camera);
-void capture_screen(int x, int y, int w, int h, char *path);
+void capture_screen(int x, int y, int w, int h, const char *path);
 
 void render_winsize();
 
@@ -86,7 +86,7 @@ HMM_Vec2 screen2world(HMM_Vec2 pos);
 sg_shader sg_compile_shader(const char *v, const char *f, sg_shader_desc *d);
 
 void gif_rec_start(int w, int h, int cpf, int bitdepth);
-void gif_rec_end(char *path);
+void gif_rec_end(const char *path);
 
 struct uv_n {
   unsigned short u;
diff --git a/source/engine/resources.c b/source/engine/resources.c
index 397517e..325c99b 100644
--- a/source/engine/resources.c
+++ b/source/engine/resources.c
@@ -72,11 +72,13 @@ char *get_filename_from_path(char *path, int extension) {
   return filename;
 }
 
-char *get_directory_from_path(char *path) {
+char *dirname(const char *path)
+{
   const char *dirpos = strrchr(path, '/');
-  char *directory = (char *)malloc(sizeof(char) * (dirpos - path + 1));
-  strncpy(directory, path, dirpos - path);
-  return directory;
+  if (!dirpos) return ".";
+  char *dir = malloc(dirpos-path+1);
+  strncpy(dir,path,dirpos-path);
+  return dir;
 }
 
 FILE *res_open(char *path, const char *tag) {
@@ -135,7 +137,7 @@ static int ls_ftw(const char *path, const struct stat *sb, int typeflag)
   return 0;
 }
 
-char **ls(char *path)
+char **ls(const char *path)
 {
   if (ls_paths) {
     for (int i = 0; i < arrlen(ls_paths); i++)
@@ -189,13 +191,13 @@ void *cdb_slurp(struct cdb *cdb, const char *file, size_t *size)
     return data;
 }
 
-int fexists(char *path)
+int fexists(const char *path)
 {
   return !access(path,R_OK);
   
   int len = strlen(path);
   if (cdb_find(&game_cdb, path,len)) return 1;
-  else if (cdb_find(&core_cdb, path, len)) return 1;
+  else if (cdb_find(&corecdb, path, len)) return 1;
   else if (!access(path, R_OK)) return 1;
 
   return 0;
@@ -247,7 +249,7 @@ char *slurp_text(const char *filename, size_t *size)
   return retstr;
 }
 
-int cp(char *p1, char *p2)
+int cp(const char *p1, const char *p2)
 {
   size_t len;
   void *data = slurp_file(p1, &len);
@@ -275,7 +277,7 @@ void rek_mkdir(char *path) {
         printf("error while trying to create '%s'\n%m\n", path); 
 }
 
-FILE *fopen_mkdir(char *path, char *mode) {
+FILE *fopen_mkdir(const char *path, const char *mode) {
     char *sep = strrchr(path, '/');
     if(sep) { 
         char *path0 = strdup(path);
diff --git a/source/engine/resources.h b/source/engine/resources.h
index 4164b56..69355ca 100644
--- a/source/engine/resources.h
+++ b/source/engine/resources.h
@@ -15,10 +15,12 @@ char *str_replace_ext(const char *s, const char *newext);
 FILE *res_open(char *path, const char *tag);
 FILE *path_open(const char *tag, const char *fmt, ...);
 char *make_path(const char *file);
-char **ls(char *path);
-int cp(char *p1, char *p2);
-int fexists(char *path);
-FILE *fopen_mkdir(char *path, char *mode);
+char **ls(const char *path);
+int cp(const char *p1, const char *p2);
+int fexists(const char *path);
+FILE *fopen_mkdir(const char *path, const char *mode);
+
+char *dirname(const char *path);
 
 void *slurp_file(const char *filename, size_t *size);
 char *slurp_text(const char *filename, size_t *size);
diff --git a/source/engine/script.c b/source/engine/script.c
index a3f7415..fadf16c 100644
--- a/source/engine/script.c
+++ b/source/engine/script.c
@@ -193,7 +193,7 @@ time_t jso_file(const char *file)
 JSValue script_runfile(const char *file)
 {
   size_t len;
-  const char *script = slurp_text(file, &len);
+  char *script = slurp_text(file, &len);
   if (!script) return JS_UNDEFINED;
 
   JSValue obj = JS_Eval(js, script, len, file, JS_EVAL_FLAGS);
diff --git a/source/engine/sound/dsp.c b/source/engine/sound/dsp.c
index b9e21e3..a361c0b 100644
--- a/source/engine/sound/dsp.c
+++ b/source/engine/sound/dsp.c
@@ -24,7 +24,7 @@ void iir_free(struct dsp_iir *iir)
   free(iir);
 }
 
-void interleave(soundbyte *a, soundbyte *b, soundbyte *stereo, int frames)
+void interleave(soundbyte *a, soundbyte *b, soundbyte *restrict stereo, int frames)
 {
   for (int i = 0; i < frames; i++) {
     stereo[i*2] = a[i];
@@ -32,7 +32,7 @@ void interleave(soundbyte *a, soundbyte *b, soundbyte *stereo, int frames)
   }
 }
 
-void deinterleave(soundbyte *stereo, soundbyte *out, int frames, int channels, int chout)
+void deinterleave(soundbyte *restrict stereo, soundbyte *restrict out, int frames, int channels, int chout)
 {
   chout--;
   for (int i = 0; i < frames; i++)
@@ -44,7 +44,7 @@ void mono_to_stero(soundbyte *a, soundbyte *stereo, int frames)
   interleave(a,a,stereo, frames);
 }
 
-void mono_expand(soundbyte *buffer, int to, int frames)
+void mono_expand(soundbyte *restrict buffer, int to, int frames)
 {
   soundbyte hold[frames];
   memcpy(hold, buffer, sizeof(soundbyte)*frames);
@@ -86,7 +86,7 @@ soundbyte *dsp_node_out(dsp_node *node)
   return node->cache;
 }
 
-void filter_am_mod(dsp_node *mod, soundbyte *buffer, int frames)
+void filter_am_mod(dsp_node *restrict mod, soundbyte *restrict buffer, int frames)
 {
   soundbyte *m = dsp_node_out(mod);
   for (int i = 0; i < frames*CHANNELS; i++) buffer[i] *= m[i];
@@ -98,7 +98,7 @@ dsp_node *dsp_am_mod(dsp_node *mod)
 }
 
 /* Add b into a */
-void sum_soundbytes(soundbyte *a, soundbyte *b, int samples)
+void sum_soundbytes(soundbyte *restrict a, soundbyte *restrict b, int samples)
 {
   for (int i = 0; i < samples; i++) a[i] += b[i];
 }
@@ -107,7 +107,7 @@ void norm_soundbytes(soundbyte *a, float lvl, int samples)
 {
   float tar = lvl;
   float max = 0 ;
-  for (int i = 0; i < samples; i++) max = (fabsf(a[i] > max) ? fabsf(a[i]) : max);
+  for (int i = 0; i < samples; i++) max = fabsf(a[i]) > max ? fabsf(a[i]) : max;
   float mult = max/tar;
   scale_soundbytes(a, mult, samples);
 }
@@ -118,7 +118,7 @@ void scale_soundbytes(soundbyte *a, float scale, int samples)
   for (int i = 0; i < samples; i++) a[i] *= scale;
 }
 
-void zero_soundbytes(soundbyte *a, int samples) { memset(a, 0, sizeof(soundbyte)*samples); }
+void zero_soundbytes(soundbyte *restrict a, int samples) { memset(a, 0, sizeof(soundbyte)*samples); }
 
 void set_soundbytes(soundbyte *a, soundbyte *b, int samples)
 {
@@ -152,9 +152,12 @@ void node_free(dsp_node *node)
   if (node == masterbus) return; /* Simple check to not delete the masterbus */
   pthread_mutex_lock(&soundrun);
   unplug_node(node);
-  if (node->data)
-    if (node->data_free) node->data_free(node->data);
-    else free(node->data);
+  if (node->data) {
+    if (node->data_free)
+      node->data_free(node->data);
+    else
+      free(node->data);
+  }
   
   free(node);
   pthread_mutex_unlock(&soundrun);
@@ -229,9 +232,9 @@ dsp_node *dsp_phasor(float amp, float freq, float (*filter)(float))
   return make_node(p, filter_phasor, NULL);
 }
 
-void filter_rectify(void *data, soundbyte *out, int n)
+void filter_rectify(void *restrict data, soundbyte *restrict out, int n)
 {
-  for (int i = 0; i < n; i++) out[i] = abs(out[i]);
+  for (int i = 0; i < n; i++) out[i] = fabsf(out[i]);
 }
 
 dsp_node *dsp_rectify()
@@ -246,7 +249,9 @@ soundbyte sample_whitenoise()
 
 void gen_whitenoise(void *data, soundbyte *out, int n)
 {
-  for (int i = 0; i < n; i++) out[i] = sample_whitenoise();
+  for (int i = 0; i < n; i++)
+    out[i] = sample_whitenoise();
+    
   mono_expand(out, CHANNELS, n);
 }
 
@@ -295,7 +300,7 @@ dsp_node *dsp_pinknoise()
   return make_node(pink, gen_pinknoise, iir_free);
 }
 
-void filter_rednoise(soundbyte *last, soundbyte *out, int frames)
+void filter_rednoise(soundbyte *restrict last, soundbyte *out, int frames)
 {
   gen_whitenoise(NULL, out, frames);
   for (int i = 0; i < frames*CHANNELS; i++) {
@@ -312,7 +317,7 @@ dsp_node *dsp_rednoise()
   return make_node(last,filter_rednoise, NULL);
 }
 
-void filter_pitchshift(float *octaves, soundbyte *buffer, int frames)
+void filter_pitchshift(float *restrict octaves, soundbyte *buffer, int frames)
 {
   soundbyte ch1[frames];
   for (int i = 0; i < frames; i++)
@@ -336,6 +341,7 @@ struct timescale
 
 static long *src_cb(struct timescale *ts, float **data)
 {
+  return NULL;
 }
 
 void filter_timescale(struct timescale *ts, soundbyte *buffer, int frames)
@@ -419,7 +425,7 @@ dsp_node *dsp_delay(double sec, double decay)
   return make_node(d, filter_delay, delay_free);
 }
 
-void filter_fwd_delay(delay *d, soundbyte *buf, int frames)
+void filter_fwd_delay(delay *restrict d, soundbyte *restrict buf, int frames)
 {
   for (int i = 0; i < frames*CHANNELS; i++) {
     ringpush(d->ring, buf[i]);  
@@ -505,7 +511,7 @@ dsp_node *dsp_adsr(unsigned int atk, unsigned int dec, unsigned int sus, unsigne
     return make_node(adsr, dsp_adsr_fillbuf, NULL);
 }
 
-void filter_noise_gate(float *floor, soundbyte *out, int frames)
+void filter_noise_gate(float *restrict floor, soundbyte *restrict out, int frames)
 {
   for (int i = 0; i < frames*CHANNELS; i++) out[i] = fabsf(out[i]) < *floor ? 0.0 : out[i];
 }
@@ -517,7 +523,7 @@ dsp_node *dsp_noise_gate(float floor)
   return make_node(v, filter_noise_gate, NULL);
 }
 
-void filter_limiter(float *ceil, soundbyte *out, int n)
+void filter_limiter(float *restrict ceil, soundbyte *restrict out, int n)
 {
   for (int i = 0; i < n*CHANNELS; i++) out[i] = fabsf(out[i]) > *ceil ?  *ceil : out[i];
 }
@@ -598,7 +604,7 @@ void pan_frames(soundbyte *out, float deg, int frames)
   }
 }
 
-void dsp_mono(void *p, soundbyte *out, int n)
+void dsp_mono(void *p, soundbyte *restrict out, int n)
 {
     for (int i = 0; i < n; i++) {
         soundbyte val = (out[i*CHANNELS] + out[i*CHANNELS+1]) / 2;
@@ -614,7 +620,7 @@ struct bitcrush {
 };
 
 #define ROUND(f) ((float)((f>0.0)?floor(f+0.5):ceil(f-0.5)))
-void filter_bitcrush(struct bitcrush *b, soundbyte *out, int frames)
+void filter_bitcrush(struct bitcrush *restrict b, soundbyte *restrict out, int frames)
 {
   int max = pow(2,b->depth) - 1;
   int step = SAMPLERATE/b->sr;
diff --git a/source/engine/sound/music.c b/source/engine/sound/music.c
index c8ed15a..640ac7e 100644
--- a/source/engine/sound/music.c
+++ b/source/engine/sound/music.c
@@ -13,10 +13,10 @@
 
 static struct {
   char *key;
-  tsf **value;
+  tsf *value;
 } *sf_hash = NULL;
 
-void dsp_midi_fillbuf(struct dsp_midi_song *song, void *out, int n)
+void dsp_midi_fillbuf(struct dsp_midi_song *restrict song, void *restrict out, int n)
 {
   soundbyte *o = out;
   tml_message *midi = song->midi;
@@ -60,7 +60,7 @@ tsf *make_soundfont(const char *path)
   int idx = shgeti(sf_hash, path);
   if (idx != -1) return sf_hash[idx].value;
   
-  long rawlen;
+  size_t rawlen;
   void *raw = slurp_file(path, &rawlen);
   tsf *sf = tsf_load_memory(raw,rawlen);
   free(raw);
@@ -83,7 +83,7 @@ void dsp_midi_free(struct dsp_midi_song *ms)
 
 dsp_node *dsp_midi(const char *midi, tsf *sf)
 {
-  long rawlen;
+  size_t rawlen;
   void *raw = slurp_file(midi, &rawlen);
   struct dsp_midi_song *ms = malloc(sizeof(*ms));
   ms->time = 0.0;
diff --git a/source/engine/sound/sound.c b/source/engine/sound/sound.c
index 0f6f630..641c674 100644
--- a/source/engine/sound/sound.c
+++ b/source/engine/sound/sound.c
@@ -9,6 +9,7 @@
 #include "time.h"
 #include <stdlib.h>
 #include "pthread.h"
+#include "debug.h"
 
 pthread_mutex_t soundrun = PTHREAD_MUTEX_INITIALIZER;
 
@@ -121,7 +122,7 @@ void filter_mod(pocketmod_context *mod, soundbyte *buffer, int frames)
 
 dsp_node *dsp_mod(const char *path)
 {
-  long modsize;
+  size_t modsize;
   void *data = slurp_file(path, &modsize);
   pocketmod_context *mod = malloc(sizeof(*mod));
   pocketmod_init(mod, data, modsize, SAMPLERATE);
@@ -171,7 +172,7 @@ struct wav *make_sound(const char *wav) {
   }
 
   struct wav *mwav = malloc(sizeof(*mwav));
-  long rawlen;
+  size_t rawlen;
   void *raw = slurp_file(wav, &rawlen);
   if (!raw) {
     YughError("Could not find file %s.", wav);
@@ -282,7 +283,7 @@ static long src_cb(struct sound *s, float **data)
   return needed;
 }
 
-struct dsp_node *dsp_source(char *path)
+struct dsp_node *dsp_source(const char *path)
 {
   struct sound *self = malloc(sizeof(*self));
   self->frame = 0;
diff --git a/source/engine/sound/sound.h b/source/engine/sound/sound.h
index 0b06446..2709882 100644
--- a/source/engine/sound/sound.h
+++ b/source/engine/sound/sound.h
@@ -44,7 +44,7 @@ void audio_close();
 struct wav *make_sound(const char *wav);
 void free_sound(const char *wav);
 void wav_norm_gain(struct wav *w, double lv);
-struct dsp_node *dsp_source(char *path);
+struct dsp_node *dsp_source(const char *path);
 struct dsp_node *dsp_mod(const char *path);
 
 int sound_finished(const struct sound *s);
diff --git a/source/engine/spline.c b/source/engine/spline.c
index 89c8d07..9253722 100644
--- a/source/engine/spline.c
+++ b/source/engine/spline.c
@@ -138,7 +138,7 @@ HMM_Vec4 spline_CT(HMM_Mat4 *C, float t)
   return HMM_MulM4V4(*C, T);
 }
 
-HMM_Mat4 make_C(HMM_Vec2 *p, HMM_Mat4 *B)
+HMM_Mat4 make_C(const HMM_Vec2 *p, const HMM_Mat4 *B)
 {
   HMM_Mat4 G;
   G.Columns[0].xy = p[0];
@@ -179,6 +179,8 @@ HMM_Vec2 *spline2d_min_seg(float u0, float u1, float min_seg, HMM_Mat4 *C, HMM_V
   }
   else
     arrput(ret, b);
+
+  return ret;
 }
 
 HMM_Vec2 *catmull_rom_min_seg(HMM_Vec2 *a, HMM_Vec2 *b, HMM_Vec2 *c, HMM_Vec2 *d, float min_seg)
@@ -216,7 +218,7 @@ HMM_Vec2 *spline2d_min_angle_2(float u0, float u1, float max_angle, HMM_Mat4 *C,
   return arr;
 }
 
-HMM_Vec2 *spline_min_angle(HMM_Vec2 *p, HMM_Mat4 *B, float min_angle, HMM_Vec2 *arr)
+HMM_Vec2 *spline_min_angle(HMM_Vec2 *p, const HMM_Mat4 *B, float min_angle, HMM_Vec2 *arr)
 {
   HMM_Mat4 C = make_C(p, B);
   arr = spline2d_min_angle_2(0,1,min_angle, &C, arr);
@@ -250,7 +252,7 @@ HMM_Vec2 *bezier_cb_ma_v2(HMM_Vec2 *cp, float ma)
   return ret;
 }
 
-HMM_Vec2 catmull_rom_query(HMM_Vec2 *cp, float d, HMM_Mat4 *G)
+HMM_Vec2 catmull_rom_query(HMM_Vec2 *cp, float d, const HMM_Mat4 *G)
 {
   if (arrlen(cp) < 4 || d < 0 || d > 1) return HMM_V2(0,0);
 
@@ -315,5 +317,5 @@ HMM_Vec2 catmull_rom_wig(HMM_Vec2 *cp, float d) { return catmull_rom_query(cp,d,
 
 HMM_Vec2 catmull_rom_closest(HMM_Vec2 *cp, HMM_Vec2 p)
 {
-
+  return p;
 }
diff --git a/source/engine/texture.c b/source/engine/texture.c
index fe4cf71..1ad8914 100644
--- a/source/engine/texture.c
+++ b/source/engine/texture.c
@@ -79,12 +79,13 @@ int gif_nframes(const char *path)
 /* If an empty string or null is put for path, loads default texture */
 struct Texture *texture_pullfromfile(const char *path) {
   if (!path) return texture_notex();
+  if (shlen(texhash) == 0) sh_new_arena(texhash);
 
   int index = shgeti(texhash, path);
   if (index != -1)
     return texhash[index].value;
 
-  long rawlen;
+  size_t rawlen;
   unsigned char *raw = slurp_file(path, &rawlen);
   
   if (!raw) return texture_notex();
@@ -109,8 +110,7 @@ struct Texture *texture_pullfromfile(const char *path) {
     tex->height = qoi.height;
     n = qoi.channels;
   } else if (!strcmp(ext, ".gif")) {
-    int *delays;
-    data = stbi_load_gif_from_memory(raw, rawlen, &delays, &tex->width, &tex->height, &tex->frames, &n, 4);
+    data = stbi_load_gif_from_memory(raw, rawlen, NULL, &tex->width, &tex->height, &tex->frames, &n, 4);
     tex->height *= tex->frames;
   } else if (!strcmp(ext, ".svg")) {
   #ifndef NSVG
@@ -187,9 +187,6 @@ struct Texture *texture_pullfromfile(const char *path) {
       .data = sg_img_data
     });
 
-  if (shlen(texhash) == 0)
-    sh_new_arena(texhash);
-
   shput(texhash, path, tex);
 
   for (int i = 1; i < mips; i++)
@@ -282,9 +279,7 @@ struct Texture *texture_fromdata(void *raw, long size)
   return tex;
 }
 
-struct Texture *texture_loadfromfile(const char *path) {
-  struct Texture *new = texture_pullfromfile(path);
-}
+struct Texture *texture_loadfromfile(const char *path) { return texture_pullfromfile(path); }
 
 struct glrect tex_get_rect(struct Texture *tex) { return ST_UNIT; }
 
diff --git a/source/engine/texture.h b/source/engine/texture.h
index 2855d45..600d07b 100644
--- a/source/engine/texture.h
+++ b/source/engine/texture.h
@@ -44,8 +44,8 @@ struct TextureOptions {
 /* Represents an actual texture on the GPU */
 struct Texture {
     sg_image id; /* ID reference for the GPU memory location of the texture */
-    uint16_t width;
-    uint16_t height;
+    int width;
+    int height;
     unsigned char *data;
     struct TextureOptions opts;
   int frames;  
diff --git a/source/engine/transform.c b/source/engine/transform.c
index e84c534..8a082ec 100644
--- a/source/engine/transform.c
+++ b/source/engine/transform.c
@@ -32,7 +32,7 @@ HMM_Vec3 mat3_t_pos(HMM_Mat4 m, HMM_Vec3 pos) { return HMM_MulM4V4(m, (HMM_Vec4)
 
 HMM_Vec3 mat3_t_dir(HMM_Mat4 m, HMM_Vec3 dir)
 {
-  m.Columns[4] = (HMM_Vec4){0,0,0,1};
+  m.Columns[3] = (HMM_Vec4){0,0,0,1};
   return mat3_t_pos(m, dir);
 }
 
@@ -60,4 +60,5 @@ transform3d mat2transform3d(HMM_Mat4 m)
 //  for (int i = 0; i < 2; i++)
 //    m.Columns[i].xyz = HMM_MulV3(m.Columns[i].xyz, t.scale.Elements[i]);
   t.rotation = HMM_M4ToQ_RH(m);
+  return t;
 }
diff --git a/source/engine/yugine.c b/source/engine/yugine.c
index 0b272f2..b8ad2d1 100644
--- a/source/engine/yugine.c
+++ b/source/engine/yugine.c
@@ -119,10 +119,10 @@ static void process_frame()
     if (stm_sec(stm_diff(frame_t, updatelast)) > updateMS) {
       double dt = stm_sec(stm_diff(frame_t, updatelast));
       updatelast = frame_t;
-      prof_start(&prof_update);
+//      prof_start(&prof_update);
 
       call_updates(dt * timescale);
-      prof(&prof_update);
+//      prof_lap(&prof_update);
 
       if (sim_play == SIM_STEP)
         sim_pause();
@@ -131,18 +131,18 @@ static void process_frame()
     physlag += elapsed;
     while (physlag > physMS) {
       physlag -= physMS;
-      prof_start(&prof_physics);
+//      prof_start(&prof_physics);
       phys_step = 1;
       phys2d_update(physMS * timescale);
       call_physics(physMS * timescale);
       phys_step = 0;
-      prof(&prof_physics);
+//      prof_lap(&prof_physics);
     }
   }
 
-    prof_start(&prof_draw);
+//    prof_start(&prof_draw);
     window_render(&mainwin);
-    prof(&prof_draw);
+//    prof_lap(&prof_draw);
     
     gameobjects_cleanup();
 }
@@ -224,6 +224,8 @@ void c_event(const sapp_event *e)
       input_mouse_move(e->mouse_x, e->mouse_y, e->mouse_dx, e->mouse_dy, e->modifiers);
       input_dropped_files(sapp_get_num_dropped_files());
       break;
+    default:
+      break;
   }
 
   if (editor_mode)
@@ -258,7 +260,7 @@ static sapp_desc start_desc = {
     .logger.func = sg_logging,
 };
 
-void app_name(char *name) { start_desc.window_title = strdup(name); }
+void app_name(const char *name) { start_desc.window_title = strdup(name); }
 
 int main(int argc, char **argv) {
 #ifndef NDEBUG
@@ -267,7 +269,7 @@ int main(int argc, char **argv) {
   if (logout) {
     time_t now = time(NULL);
     char fname[100];
-    snprintf(fname, 100, "yugine-%d.log", now);
+    snprintf(fname, 100, "yugine-%ld.log", now);
     log_setfile(fname);
   }
 #endif
diff --git a/source/engine/yugine.h b/source/engine/yugine.h
index ba13a36..637848d 100644
--- a/source/engine/yugine.h
+++ b/source/engine/yugine.h
@@ -13,7 +13,7 @@ void print_stacktrace();
 void yugine_init();
 
 const char *engine_info();
-void app_name(char *name);
+void app_name(const char *name);
 
 int frame_fps();
 double get_timescale();