Basic 3d

scripts/engine.js

@@ -332,12 +332,13 @@ function process()
     
   render.set_camera();
   render.sprites(); // blits all sprites
-  render.models(); // blits all models
   render.emitters(); // blits emitters
   prosperon.draw(); // draw calls
   debug.draw(); // calls needed debugs
   render.flush();
   
+  prosperon.hook3d?.();
+  
   render.hud_res(window.rendersize);
   prosperon.gui();
   render.flush();

scripts/entity.js

@@ -644,8 +644,8 @@ gameobject.doc = {
 
 global.ur = {};
 
-if (io.exists(".prosperon/ur.json"))
+if (io.exists(`${io.dumpfolder}/ur.json`))
-  ur = json.decode(io.slurp(".prosperon/ur.json"));
+  ur = json.decode(io.slurp(`${io.dumpfolder}/ur.json`));
 else {
   ur = {};
   ur._list = [];

scripts/render.js

@@ -47,8 +47,8 @@ render.point =  function(pos,size,color = Color.blue) {
   
 var tmpline = render.line;
 render.line = function(points, color = Color.white, thickness = 1) {
-    tmpline(points,color,thickness);
+  tmpline(points,color,thickness);
-  };
+};
 
 render.cross = function(pos, size, color = Color.red) {
     var a = [

scripts/std.js

@@ -45,6 +45,7 @@ os.openurl = function(url) {
 }
 
 var projectfile = "project.prosperon";
+io.dumpfolder = '.prosperon';
 
 Resources.is_sound = function(path) {
   var ext = path.ext();
@@ -185,7 +186,7 @@ Cmdline.register_order = function(order, fn, doc, usage = "") {
 }
 
 Cmdline.register_order("edit", function() {
-  if (!io.exists(".prosperon")) {
+  if (!io.exists(projectfile)) {
     say("No game to edit. Try making one with 'prosperon init'.");
     return;
   }
@@ -209,12 +210,12 @@ Cmdline.register_order("init", function() {
     return;
   }
 
-  if (!(io.ls().length === 0)) {
+  if (!(io.ls().filter(x => x[0] !== '.').length === 0)) {
     say("Directory is not empty. Make an empty one and init there.");
     return;
   }
 
-  io.mkdir(".prosperon");
+  io.mkdir(io.dumpfolder);
   var project = {};
   project.version = prosperon.version;
   project.revision = prosperon.revision;

source/engine/3d/model.c

@@ -26,13 +26,6 @@
 
 #include "sokol/sokol_gfx.h"
 
-static struct {
-  char *key;
-  struct model *value;
-} *modelhash = NULL;
-
-struct drawmodel **models = NULL;
-
 static void processnode();
 static void processmesh();
 static void processtexture();
@@ -55,23 +48,6 @@ struct mesh_v {
 };
 
 void model_init() {
-/*  model_shader = sg_make_shader(diffuse_shader_desc(sg_query_backend()));
-
-  model_pipe = sg_make_pipeline(&(sg_pipeline_desc){
-      .shader = model_shader,
-      .layout = {
-          .attrs = {
-              [0].format = SG_VERTEXFORMAT_FLOAT3,
-              [1].format = SG_VERTEXFORMAT_USHORT2N,
-          },
-      },
-      .index_type = SG_INDEXTYPE_UINT16,
-      .cull_mode = SG_CULLMODE_FRONT,
-      .depth.write_enabled = true,
-      .depth.compare = SG_COMPAREFUNC_LESS_EQUAL
-  });
-*/
-
   model_shader = sg_make_shader(unlit_shader_desc(sg_query_backend()));
 
   model_pipe = sg_make_pipeline(&(sg_pipeline_desc){
@@ -79,8 +55,8 @@ void model_init() {
     .layout = {
       .attrs = {
         [0].format = SG_VERTEXFORMAT_FLOAT3,
-	[1].format = SG_VERTEXFORMAT_USHORT2N,
+	      [1].format = SG_VERTEXFORMAT_USHORT2N,
-	[1].buffer_index = 1,
+	      [1].buffer_index = 1,
       },
     },
     .index_type = SG_INDEXTYPE_UINT16,
@@ -90,15 +66,6 @@ void model_init() {
   });
 }
 
-struct model *GetExistingModel(const char *path) {
-  if (!path || path[0] == '\0') return NULL;
-
-  int index = shgeti(modelhash, path);
-  if (index != -1) return modelhash[index].value;
-
-  return MakeModel(path);
-}
-
 cgltf_attribute *get_attr_type(cgltf_primitive *p, cgltf_attribute_type t)
 {
   for (int i = 0; i < p->attributes_count; i++) {
@@ -141,13 +108,10 @@ void mesh_add_material(mesh *mesh, cgltf_material *mat)
      if (img->buffer_view) {
        cgltf_buffer_view *buf = img->buffer_view;
        mesh->bind.fs.images[0] = texture_fromdata(buf->buffer->data, buf->size)->id;
-     } else {
+     } else
-//       char *imp = seprint("%s/%s", dirname(mesh->model->path), img->uri);
+       mesh->bind.fs.images[0] = texture_from_file(img->uri)->id;
-//       mesh->bind.fs.images[0] = texture_from_file(imp)->id;
-//       free(imp);
-     }
    } else
-     mesh->bind.fs.images[0] = texture_from_file("k")->id; 
+     mesh->bind.fs.images[0] = texture_from_file("icons/moon.gif")->id; 
      
    mesh->bind.fs.samplers[0] = sg_make_sampler(&(sg_sampler_desc){});
 /*     
@@ -245,8 +209,8 @@ void mesh_add_primitive(mesh *mesh, cgltf_primitive *prim)
       break;
 
     case cgltf_attribute_type_normal:
-      has_norm = 1;
+//      has_norm = 1;
-      mesh->bind.vertex_buffers[2] = normal_floats(vs, verts, comp);
+//      mesh->bind.vertex_buffers[2] = normal_floats(vs, verts, comp);
       break;
 
     case cgltf_attribute_type_tangent:
@@ -337,7 +301,7 @@ void model_process_scene(model *model, cgltf_scene *scene)
     model_process_node(model, scene->nodes[i]);
 }
 
-struct model *MakeModel(const char *path)
+struct model *model_make(const char *path)
 {
   YughInfo("Making the model from %s.", path);
   cgltf_options options = {0};
@@ -357,8 +321,6 @@ struct model *MakeModel(const char *path)
   }
 
   struct model *model = calloc(1, sizeof(*model));
-  
-  model->path = path;
 
   if (data->scenes_count == 0 || data->scenes_count > 1) return NULL;
   model_process_scene(model, data->scene);
@@ -369,76 +331,34 @@ struct model *MakeModel(const char *path)
   for (int i = 0; i < data->animations_count; i++)
     model_add_cgltf_anim(model, &data->animations[i]);
 
-  shput(modelhash, path, model);
-
   return model;
 }
 
-/* eye position */
+void model_free(model *m)
-HMM_Vec3 eye = {0,0,100};
+{
 
-void draw_model(struct model *model, HMM_Mat4 amodel, HMM_Mat4 *proj) {
+}
-  HMM_Vec3 center = {0.f, 0.f, 0.f};
-  HMM_Mat4 view = HMM_LookAt_RH(eye, center, vUP);
-  HMM_Mat4 vp = HMM_MulM4(*proj, view);
-
-  HMM_Vec3 dir_dir = HMM_NormV3(HMM_SubV3(center, dirl_pos));
 
+void model_draw_go(model *model, gameobject *go, gameobject *cam)
+{
+  HMM_Mat4 view = t3d_go2world(cam);
+  HMM_Mat4 proj = HMM_Perspective_RH_NO(20, 1, 0.01, 10000);
+  HMM_Mat4 vp = HMM_MulM4(proj, view);
+  
   vs_p_t vs_p;
   memcpy(vs_p.vp, vp.Elements, sizeof(float)*16);
-  memcpy(vs_p.model, amodel.Elements, sizeof(float)*16);
+  memcpy(vs_p.model, t3d_go2world(go).Elements, sizeof(float)*16);
-
+  
   sg_apply_pipeline(model_pipe);
   sg_apply_uniforms(SG_SHADERSTAGE_VS, SLOT_vs_p, SG_RANGE_REF(vs_p));
-
+  
   for (int i = 0; i < arrlen(model->meshes); i++) {
     sg_apply_bindings(&model->meshes[i].bind);
     sg_draw(0, model->meshes[i].idx_count, 1);    
   }
 }
 
-struct drawmodel *make_drawmodel(gameobject *go)
-{
-  struct drawmodel *dm = malloc(sizeof(struct drawmodel));
-  dm->model = NULL;
-  dm->amodel = HMM_M4D(1.f);
-  dm->go = go;
-  arrpush(models,dm);
-  return dm;
-}
-
-void model_draw_all()
-{
-  for (int i = 0; i < arrlen(models); i++)
-    draw_drawmodel(models[i]);
-}
-
-void draw_drawmodel(struct drawmodel *dm)
-{
-  if (!dm->model) return;
-  struct gameobject *go = dm->go;
-  HMM_Mat4 rst = t3d_go2world(go);
-  draw_model(dm->model, rst, &useproj);
-}
-
-void drawmodel_free(struct drawmodel *dm) {
-  int rm;
-  for (int i = 0; i < arrlen(models); i++)
-    if (models[i] == dm) {
-      rm = i;
-      break;
-    }
-
-  arrdelswap(models,rm);
-  free(dm);
-}
-
 void material_free(material *mat)
 {
 
 }
-
-void mesh_free(mesh *m)
-{
-
-}

source/engine/3d/model.h

@@ -23,42 +23,23 @@ typedef struct mesh {
 /* A collection of meshes which create a full figure */
 typedef struct model {
   struct mesh *meshes;
-  const char *path;
   HMM_Mat4 matrix;
 } model;
 
-/* A model with draw information */ 
-typedef struct drawmodel {
-  struct model *model;
-  HMM_Mat4 amodel;
-  gameobject *go;
-} drawmodel;
-
 typedef struct bone {
   transform3d t;
   struct bone *children;
 } bone;
 
-/* Get the model at a path, or create and return if it doesn't exist */
-struct model *GetExistingModel(const char *path);
-
 /* Make a Model struct */
-struct model *MakeModel(const char *path);
+struct model *model_make(const char *path);
+void model_free(model *m);
 
-/* Load a model from memory into the GPU */
+void model_draw_go(model *m, gameobject *go, gameobject *cam);
-void loadmodel(struct model *model);
 
 void model_init();
 
-struct drawmodel *make_drawmodel(gameobject *go);
-void draw_drawmodel(struct drawmodel *dm);
-void model_draw_all();
-void drawmodel_free(struct drawmodel *dm);
-
 material *material_make();
 void material_free(material *mat);
 
-mesh *mesh_make();
-void mesh_free(mesh *m);
-
 #endif

source/engine/HandmadeMath.h

@@ -895,11 +895,14 @@ static inline HMM_Vec2 HMM_V2Rotate(HMM_Vec2 v, float angle)
   return (HMM_Vec2){r*cos(angle), r*sin(angle)};
 }
 
-
 static inline float HMM_LenV3(HMM_Vec3 A) {
   return HMM_SqrtF(HMM_LenSqrV3(A));
 }
 
+static inline float HMM_DistV3(HMM_Vec3 a, HMM_Vec3 b) {
+  return HMM_LenV3(HMM_SubV3(a,b));
+}
+
 static inline float HMM_AngleV3(HMM_Vec3 a, HMM_Vec3 b)
 {
   return acos(HMM_DotV3(a,b)/(HMM_LenV3(a)*HMM_LenV3(b)));

source/engine/debug/debugdraw.c

@@ -15,6 +15,8 @@
 #include "line.sglsl.h"
 #include "grid.sglsl.h"
 
+#include "grid3d.sglsl.h"
+
 #define PAR_STREAMLINES_IMPLEMENTATION
 #include "par/par_streamlines.h"
 
@@ -57,7 +59,7 @@ static sg_shader point_shader;
 static sg_pipeline point_pipe;
 static sg_bindings point_bind;
 struct point_vertex {
-  struct draw_p pos;
+  struct draw_p3 pos;
   struct rgba color;
   float radius;
 };
@@ -109,6 +111,9 @@ struct circle_vertex {
   float fill;
 };
 
+static sg_pipeline g3_pipe;
+static sg_shader g3_shader;
+
 void debug_nextpass()
 {
   point_sc = point_c;
@@ -191,6 +196,14 @@ static sg_shader_uniform_block_desc time_ubo = {
 
 void debugdraw_init()
 {
+/*
+  g3_shader = sg_make_shader(grid3d_shader_desc(sg_query_backend()));
+  g3_pipe = sg_make_pipeline(&(sg_pipeline_desc){
+    .shader = g3_shader,
+    .primitive_type = SG_PRIMITIVETYPE_TRIANGLE_STRIP,
+    .index_type = SG_INDEXTYPE_UINT32
+  });
+*/
   point_shader = sg_make_shader(point_shader_desc(sg_query_backend()));
   
   point_pipe = sg_make_pipeline(&(sg_pipeline_desc){
@@ -219,7 +232,7 @@ void debugdraw_init()
     .shader = line_shader,
     .layout = {
       .attrs = {
-        [0].format = SG_VERTEXFORMAT_FLOAT2, /* pos */
+        [0].format = SG_VERTEXFORMAT_FLOAT3, /* pos */
 	      [1].format = SG_VERTEXFORMAT_FLOAT, /* dist */
 	      [2].format = SG_VERTEXFORMAT_UBYTE4N, /* color */
 	      [3].format = SG_VERTEXFORMAT_FLOAT, /* seg length */
@@ -331,7 +344,7 @@ void debugdraw_init()
   });
 }
 
-void draw_line(HMM_Vec2 *points, int n, struct rgba color, float seg_len, float seg_speed)
+void draw_line3d(HMM_Vec3 *points, int n, struct rgba color, float seg_len, float seg_speed)
 {
   if (n < 2) return;
   
@@ -339,7 +352,7 @@ void draw_line(HMM_Vec2 *points, int n, struct rgba color, float seg_len, float
   
   struct line_vert v[n];
   float dist = 0;
-
+  
   for (int i = 0; i < n; i++) {
     v[i].pos.x = points[i].x;
     v[i].pos.y = points[i].y;
@@ -347,10 +360,10 @@ void draw_line(HMM_Vec2 *points, int n, struct rgba color, float seg_len, float
     v[i].seg_len = seg_len;
     v[i].seg_speed = seg_speed;
   }
-
+  
   v[0].dist = 0;
   for (int i = 1; i < n; i++) {
-    dist += HMM_DistV2(points[i-1], points[i]);
+    dist += HMM_DistV3(points[i-1], points[i]);
     v[i].dist = dist;    
   }
   
@@ -375,11 +388,22 @@ void draw_line(HMM_Vec2 *points, int n, struct rgba color, float seg_len, float
   if (sg_query_buffer_will_overflow(line_bind.vertex_buffers[0], vr.size) || sg_query_buffer_will_overflow(line_bind.index_buffer, ir.size)) return;
   sg_append_buffer(line_bind.vertex_buffers[0], &vr);
   sg_append_buffer(line_bind.index_buffer, &ir);
-
+  
   line_c += i_c;
   line_v += n;
 }
 
+void draw_line(HMM_Vec2 *points, int n, struct rgba color, float seg_len, float seg_speed)
+{
+  if (n < 2) return;
+  
+  HMM_Vec3 points3[n];
+  for (int i = 0; i < n; i++)
+    points3[i].xy = points[i];
+    
+  draw_line3d(points3, n, color, seg_len, seg_speed);
+}
+
 HMM_Vec2 center_of_vects(HMM_Vec2 *v, int n)
 {
   HMM_Vec2 c;

source/engine/debug/debugdraw.h

@@ -9,6 +9,7 @@ void draw_cppoint(HMM_Vec2 point, float r, struct rgba color);
 void draw_points(HMM_Vec2 *points, int n, float size, struct rgba color);
 
 void draw_line(HMM_Vec2 *points, int n, struct rgba color, float seg_len, float seg_speed);
+void draw_line3d(HMM_Vec3 *points, int n, struct rgba color, float seg_len, float seg_speed);
 void draw_edge(HMM_Vec2 *points, int n, struct rgba color, float thickness, int flags, struct rgba line_color, float line_seg);
 
 /* pixels - how many pixels thick, segsize - dashed line seg len */

source/engine/gameobject.c

@@ -31,9 +31,7 @@ transform3d go2t3(gameobject *go)
   t.pos.Z = go->drawlayer;
   t.scale = go->scale;
   t.scale.Z = go->scale.X;
-  t.rotation = HMM_QFromAxisAngle_RH(vFWD, go_angle(go));
+  t.rotation = go->quat;
-  t.rotation = HMM_MulQ(HMM_QFromAxisAngle_RH(vRIGHT, -t.pos.Y/100), t.rotation);
-  t.rotation = HMM_MulQ(HMM_QFromAxisAngle_RH(vUP, t.pos.X/100), t.rotation);
   return t;
 }
 
@@ -140,7 +138,8 @@ gameobject *MakeGameobject() {
       .ref = JS_UNDEFINED,
       .mask = ~0,
       .categories = 1,
-      .warp_mask = ~0
+      .warp_mask = ~0,
+      .quat = HMM_QFromAxisAngle_RH((HMM_Vec3){0,1,0}, 0)
   };
 
   go.body = cpSpaceAddBody(space, cpBodyNew(go.mass, 1.f));
@@ -200,6 +199,12 @@ void body_draw_shapes_dbg(cpBody *body, cpShape *shape, void *data) {
   s->debugdraw(s->data);
 }
 
+HMM_Vec3 go_pos3d(gameobject *go)
+{
+  HMM_Vec2 pos2d = go_pos(go);
+  return (HMM_Vec3){pos2d.x, pos2d.y, go->drawlayer};
+}
+
 void gameobject_draw_debug(gameobject *go) {
   if (!go || !go->body) return;
 

source/engine/gameobject.h

@@ -30,6 +30,7 @@ struct gameobject {
   cpBodyType phys;
   cpBody *body; /* NULL if this object is dead; has 2d position and rotation, relative to global 0 */  
   HMM_Vec3 scale; /* local */  
+  HMM_Quat quat;
   int next;
   float mass;
   float friction;
@@ -79,6 +80,8 @@ HMM_Mat3 t_world2go(gameobject *go);
 HMM_Mat4 t3d_go2world(gameobject *go);
 HMM_Mat4 t3d_world2go(gameobject *go);
 
+HMM_Vec3 go_pos3d(gameobject *go);
+
 HMM_Vec2 go_pos(gameobject *go);
 void gameobject_setpos(gameobject *go, cpVect vec);
 float go_angle(gameobject *go);

source/engine/jsffi.c

@@ -70,9 +70,8 @@ QJSCLASS(sprite)
 QJSCLASS(warp_gravity)
 QJSCLASS(warp_damp)
 QJSCLASS(material)
-QJSCLASS(mesh)
+QJSCLASS(model)
 QJSCLASS(window)
-QJSCLASS(drawmodel)
 QJSCLASS(constraint)
 
 static JSValue sound_proto;
@@ -350,6 +349,16 @@ HMM_Vec2 *js2cpvec2arr(JSValue v) {
   return arr;
 }
 
+HMM_Vec3 *js2cpvec3arr(JSValue v)
+{
+  HMM_Vec3 *arr = NULL;
+  int n = js_arrlen(v);
+  arrsetlen(arr,n);
+  for (int i = 0; i < n; i++)
+    arr[i] = js2vec3(js_getpropidx(v,i));
+  return arr;
+}
+
 HMM_Vec2 *jsfloat2vec(JSValue v)
 {
   size_t s;
@@ -549,14 +558,6 @@ static const JSCFunctionListEntry js_warp_damp_funcs [] = {
   CGETSET_ADD(warp_damp, damp)
 };
 
-JSC_CCALL(drawmodel_draw, draw_drawmodel(js2drawmodel(this)))
-JSC_SCALL(drawmodel_path, js2drawmodel(this)->model = GetExistingModel(str))
-
-static const JSCFunctionListEntry js_drawmodel_funcs[] = {
-  MIST_FUNC_DEF(drawmodel, draw, 0),
-  MIST_FUNC_DEF(drawmodel, path, 1)
-};
-
 JSC_GETSET(emitter, life, number)
 JSC_GETSET(emitter, life_var, number)
 JSC_GETSET(emitter, speed, number)
@@ -581,7 +582,6 @@ JSC_CCALL(emitter_start, start_emitter(js2emitter(this)))
 JSC_CCALL(emitter_stop, stop_emitter(js2emitter(this)))
 JSC_CCALL(emitter_emit, emitter_emit(js2emitter(this), js2number(argv[0])))
 
-
 JSC_CCALL(render_grid, draw_grid(js2number(argv[0]), js2number(argv[1]), js2color(argv[2]));)
 JSC_CCALL(render_point, draw_cppoint(js2vec2(argv[0]), js2number(argv[1]), js2color(argv[2])))
 JSC_CCALL(render_circle, draw_circle(js2vec2(argv[0]), js2number(argv[1]), js2number(argv[2]), js2color(argv[3]), -1);)
@@ -596,10 +596,16 @@ JSC_CCALL(render_poly,
 JSC_CCALL(render_line, 
   void *v1 = js2cpvec2arr(argv[0]);
   draw_edge(v1, js_arrlen(argv[0]), js2color(argv[1]), js2number(argv[2]), 0, js2color(argv[1]), 10);
+  arrfree(v1);
 )
 
+JSC_CCALL(render_line3d,
+  void *v1 = js2cpvec3arr(argv[0]);
+  draw_line3d(v1, js_arrlen(argv[0]), js2color(argv[1]), 0, 0);
+  arrfree(v1);
+);
+
 JSC_CCALL(render_sprites, sprite_draw_all())
-JSC_CCALL(render_models, model_draw_all())
 JSC_CCALL(render_emitters, emitters_draw(&useproj))
 JSC_CCALL(render_flush, debug_flush(&useproj); text_flush(&useproj); )
 JSC_CCALL(render_end_pass,
@@ -612,7 +618,7 @@ JSC_SCALL(render_text_size, ret = bb2js(text_bb(str, js2number(argv[1]), js2numb
 JSC_CCALL(render_set_camera, useproj = projection)
 JSC_CCALL(render_hud_res,
   HMM_Vec2 xy = js2vec2(argv[0]);
-  useproj = HMM_Orthographic_LH_ZO(0, xy.x, 0, xy.y, -1, 1);
+  useproj = HMM_Orthographic_RH_ZO(0, xy.x, 0, xy.y, -1, 1);
 )
 JSC_CCALL(render_clear_color,
   sg_color c;
@@ -626,8 +632,8 @@ static const JSCFunctionListEntry js_render_funcs[] = {
   MIST_FUNC_DEF(render, circle, 3),
   MIST_FUNC_DEF(render, poly, 2),
   MIST_FUNC_DEF(render, line, 3),
+  MIST_FUNC_DEF(render, line3d, 2),
   MIST_FUNC_DEF(render, sprites, 0),
-  MIST_FUNC_DEF(render, models, 0),
   MIST_FUNC_DEF(render, emitters, 0),
   MIST_FUNC_DEF(render, flush, 0),
   MIST_FUNC_DEF(render, end_pass, 0),
@@ -1026,6 +1032,14 @@ static const JSCFunctionListEntry js_physics_funcs[] = {
   MIST_FUNC_DEF(physics, make_gravity, 0),
 };
 
+JSC_CCALL(model_draw_go,
+  model_draw_go(js2model(this), js2gameobject(argv[0]), js2gameobject(argv[1]))
+);
+
+static const JSCFunctionListEntry js_model_funcs[] = {
+  MIST_FUNC_DEF(model, draw_go, 1)
+};
+
 static const JSCFunctionListEntry js_emitter_funcs[] = {
   CGETSET_ADD(emitter, life),
   CGETSET_ADD(emitter, life_var),
@@ -1171,6 +1185,24 @@ JSC_CCALL(gameobject_this2world, return vec22js(go2world(js2gameobject(this), js
 JSC_CCALL(gameobject_dir_world2this, return vec22js(mat_t_dir(t_world2go(js2gameobject(this)), js2vec2(argv[0]))))
 JSC_CCALL(gameobject_dir_this2world, return vec22js(mat_t_dir(t_go2world(js2gameobject(this)), js2vec2(argv[0]))))
 
+JSC_CCALL(gameobject_rotate3d,
+  HMM_Vec3 rot = js2vec3(argv[0]);
+  HMM_Quat qrot = HMM_QFromAxisAngle_RH((HMM_Vec3){1,0,0}, rot.x);
+  qrot = HMM_MulQ(qrot, HMM_QFromAxisAngle_RH((HMM_Vec3){0,1,0}, rot.y));
+  qrot = HMM_MulQ(qrot, HMM_QFromAxisAngle_RH((HMM_Vec3){0,0,1}, rot.z));
+  gameobject *go = js2gameobject(this);
+  go->quat = HMM_MulQ(go->quat, qrot);
+  return JS_UNDEFINED;
+)
+
+JSC_CCALL(gameobject_lookat,
+  HMM_Vec3 point = js2vec3(argv[0]);
+  gameobject *go = js2gameobject(this);
+  HMM_Vec3 pos = go_pos3d(go);
+  HMM_Mat4 m = HMM_LookAt_RH(pos, point, (HMM_Vec3){0,1,0});
+  go->quat = HMM_M4ToQ_RH(m);
+)
+
 static const JSCFunctionListEntry js_gameobject_funcs[] = {
   CGETSET_ADD(gameobject, friction),
   CGETSET_ADD(gameobject, elasticity),
@@ -1200,6 +1232,8 @@ static const JSCFunctionListEntry js_gameobject_funcs[] = {
   MIST_FUNC_DEF(gameobject, dir_world2this, 1),
   MIST_FUNC_DEF(gameobject, dir_this2world, 1),
   MIST_FUNC_DEF(gameobject, selfsync, 0),
+  MIST_FUNC_DEF(gameobject, rotate3d, 1),
+  MIST_FUNC_DEF(gameobject, lookat, 1)
 };
 
 JSC_CCALL(joint_pin, return constraint2js(constraint_make(cpPinJointNew(js2gameobject(argv[0])->body, js2gameobject(argv[1])->body, cpvzero,cpvzero))))
@@ -1367,7 +1401,10 @@ const char *STRTEST = "TEST STRING";
 
 JSC_CCALL(performance_barecall,)
 JSC_CCALL(performance_unpack_num, int i = js2number(argv[0]))
-JSC_CCALL(performance_unpack_array, js2cpvec2arr(argv[0]))
+JSC_CCALL(performance_unpack_array,
+  void *v = js2cpvec2arr(argv[0]);
+  arrfree(v);
+)
 JSC_CCALL(performance_pack_num, return number2js(1.0))
 JSC_CCALL(performance_pack_string, return JS_NewStringLen(js, STRTEST, sizeof(*STRTEST)))
 JSC_CCALL(performance_unpack_string, js2str(argv[0]))
@@ -1502,18 +1539,12 @@ JSC_SCALL(os_make_texture,
   JS_SetPropertyStr(js, ret, "path", JS_DupValue(js,argv[0]));
 )
 
-JSC_CCALL(os_make_model,
-  gameobject *go = js2gameobject(argv[0]);
-  struct drawmodel *dm = make_drawmodel(go);
-  JSValue ret = JS_NewObject(js);
-  js_setprop_str(ret, "id", ptr2js(dm));
-  return ret;
-)
-
 JSC_CCALL(os_make_font, return font2js(MakeFont(js2str(argv[0]), js2number(argv[1]))))
 
 JSC_SCALL(os_system, system(str); )
 
+JSC_SCALL(os_make_model, return model2js(model_make(str)))
+
 static const JSCFunctionListEntry js_os_funcs[] = {
   MIST_FUNC_DEF(os,sprite,1),
   MIST_FUNC_DEF(os, cwd, 0),
@@ -1530,9 +1561,9 @@ static const JSCFunctionListEntry js_os_funcs[] = {
   MIST_FUNC_DEF(os, make_circle2d, 2),
   MIST_FUNC_DEF(os, make_poly2d, 2),
   MIST_FUNC_DEF(os, make_edge2d, 2),
-  MIST_FUNC_DEF(os, make_model, 2),
   MIST_FUNC_DEF(os, make_texture, 1),
   MIST_FUNC_DEF(os, make_font, 2),
+  MIST_FUNC_DEF(os, make_model, 1)
 };
 
 #include "steam.h"
@@ -1554,7 +1585,7 @@ void ffi_load() {
   QJSCLASSPREP_FUNCS(font);
   QJSCLASSPREP_FUNCS(constraint);
   QJSCLASSPREP_FUNCS(window);
-  QJSCLASSPREP_FUNCS(drawmodel);
+  QJSCLASSPREP_FUNCS(model);
 
   QJSGLOBALCLASS(nota);
   QJSGLOBALCLASS(input);

source/engine/render.c

@@ -349,7 +349,7 @@ void openglRender(struct window *window, gameobject *cam, float zoom) {
   campos = go_pos(cam);
   camzoom = zoom;
 
-  projection = HMM_Orthographic_LH_NO(
+  projection = HMM_Orthographic_RH_NO(
              campos.x - camzoom * usesize.x / 2,
              campos.x + camzoom * usesize.x / 2,
              campos.y - camzoom * usesize.y / 2,

source/engine/render.h

@@ -37,6 +37,12 @@ struct draw_p {
   float y;
 };
 
+struct draw_p3 {
+  float x;
+  float y;
+  float z;
+};
+
 #include <chipmunk/chipmunk.h>
 
 enum RenderMode {

source/shaders/grid3d.sglsl

@@ -0,0 +1,86 @@
+@vs vsg3
+// Shared set between most vertex shaders
+uniform ViewUniforms {
+  uniform mat4 view;
+  uniform mat4 proj;
+};
+
+out vec3 nearPoint;
+out vec3 farPoint;
+out mat4 fragView;
+out mat4 fragProj;
+
+// Grid position are in xy clipped space
+vec3 gridPlane[6] = vec3[](
+    vec3(1, 1, 0), vec3(-1, -1, 0), vec3(-1, 1, 0),
+    vec3(-1, -1, 0), vec3(1, 1, 0), vec3(1, -1, 0)
+);
+
+// normal vertice projection
+vec3 UnprojectPoint(float x, float y, float z, mat4 view, mat4 projection) {
+    mat4 viewInv = inverse(view);
+    mat4 projInv = inverse(projection);
+    vec4 unprojectedPoint =  viewInv * projInv * vec4(x, y, z, 1.0);
+    return unprojectedPoint.xyz / unprojectedPoint.w;
+}
+
+void main() {
+    vec3 p = gridPlane[gl_VertexIndex].xyz;
+    nearPoint = UnprojectPoint(p.x, p.y, 0.0, view, proj).xyz; // unprojecting on the near plane
+    farPoint = UnprojectPoint(p.x, p.y, 1.0, view, proj).xyz; // unprojecting on the far plane
+    fragView = view;
+    fragProj = proj;
+    gl_Position = vec4(p, 1.0); // using directly the clipped coordinates
+}
+@end
+
+@fs fsg3
+float near = 0.01;
+float far = 100;
+in vec3 nearPoint;
+in vec3 farPoint;
+in mat4 fragView;
+in mat4 fragProj;
+out vec4 outColor;
+
+vec4 grid(vec3 fragPos3D, float scale, bool drawAxis) {
+    vec2 coord = fragPos3D.xz * scale;
+    vec2 derivative = fwidth(coord);
+    vec2 grid = abs(fract(coord - 0.5) - 0.5) / derivative;
+    float line = min(grid.x, grid.y);
+    float minimumz = min(derivative.y, 1);
+    float minimumx = min(derivative.x, 1);
+    vec4 color = vec4(0.2, 0.2, 0.2, 1.0 - min(line, 1.0));
+    // z axis
+    if(fragPos3D.x > -0.1 * minimumx && fragPos3D.x < 0.1 * minimumx)
+        color.z = 1.0;
+    // x axis
+    if(fragPos3D.z > -0.1 * minimumz && fragPos3D.z < 0.1 * minimumz)
+        color.x = 1.0;
+    return color;
+}
+float computeDepth(vec3 pos) {
+    vec4 clip_space_pos = fragProj * fragView * vec4(pos.xyz, 1.0);
+    return (clip_space_pos.z / clip_space_pos.w);
+}
+float computeLinearDepth(vec3 pos) {
+    vec4 clip_space_pos = fragProj * fragView * vec4(pos.xyz, 1.0);
+    float clip_space_depth = (clip_space_pos.z / clip_space_pos.w) * 2.0 - 1.0; // put back between -1 and 1
+    float linearDepth = (2.0 * near * far) / (far + near - clip_space_depth * (far - near)); // get linear value between 0.01 and 100
+    return linearDepth / far; // normalize
+}
+void main() {
+    float t = -nearPoint.y / (farPoint.y - nearPoint.y);
+    vec3 fragPos3D = nearPoint + t * (farPoint - nearPoint);
+
+    gl_FragDepth = computeDepth(fragPos3D);
+
+    float linearDepth = computeLinearDepth(fragPos3D);
+    float fading = max(0, (0.5 - linearDepth));
+
+    outColor = (grid(fragPos3D, 10, true) + grid(fragPos3D, 1, true))* float(t > 0); // adding multiple resolution for the grid
+    outColor.a *= fading;
+}
+@end
+
+@program grid3d vsg3 fsg3

source/shaders/line.sglsl

@@ -1,5 +1,5 @@
 @vs lvs
-in vec2 apos;
+in vec3 apos;
 in float adist;
 in vec4 acolor;
 in float aseglen;
@@ -14,7 +14,7 @@ uniform lvs_params { mat4 proj; };
 
 void main()
 {
-  gl_Position = proj * vec4(apos, 0.0, 1.0);
+  gl_Position = proj * vec4(apos, 1.0);
   fcolor = acolor;
   dist = adist;
   seg_len = aseglen;

source/shaders/point.sglsl

@@ -12,7 +12,7 @@ void main()
 {
   gl_Position = proj * vec4(apos, 0.0, 1.0);
   fcolor = acolor;
-  gl_PointSize = aradius;
+  gl_PointSize = 1.0;
 }
 @end
 
@@ -24,7 +24,7 @@ in vec4 fcolor;
 void main()
 {
   float d = length(gl_FragCoord.xy - vec2(0.5,0.5)); /* Should really pointcoord, normalized */
-  if (d >= 0.47)
+  if (d >= 0.1)
     discard;
     
   color = fcolor;

source/shaders/unlit.sglsl

@@ -1,8 +1,10 @@
 @vs vs
 in vec3 a_pos;
 in vec2 a_tex_coords;
+//in vec3 a_norm;
 
 out vec2 tex_coords;
+//out vec3 normal;
 
 uniform vs_p {
 uniform mat4 vp;
@@ -12,17 +14,21 @@ uniform mat4 model;
 void main() {
   gl_Position = vp * vec4(vec3(model * vec4(a_pos,1.0)), 1.0);  
   tex_coords = a_tex_coords;
+  //normal = a_norm;
 }
 @end
 
 @fs fs
 in vec2 tex_coords;
+//in vec3 normal;
 out vec4 color;
 
 uniform texture2D diffuse;
 uniform sampler smp;
 
 void main() {
+  //vec3 lightDir = normalize(vec3(0.5f, 0.5f, 1.0f));
+  //float diff = max(dot(normal, lightDir), 0.0f);
   color = texture(sampler2D(diffuse,smp),tex_coords);
 }
 @end