particle ssbo

scripts/actor.js

@@ -17,6 +17,12 @@ actor.spawn = function(script, config, callback){
   return padawan;
 };
 
+actor.tween = function(from,to,time,fn) {
+  var stop = tween(from,to,time,fn);
+  this.timers.push(stop);
+  return stop;
+}
+
 actor.spawn.doc = `Create a new actor, using this actor as the master, initializing it with 'script' and with data (as a JSON or Nota file) from 'config'.`;
 
 actor.rm_pawn = function(pawn)
@@ -36,26 +42,11 @@ actor.kill = function(){
   this.__dead__ = true;
   if (typeof this.die === 'function') this.die();
   if (typeof this.stop === 'function') this.stop();
+  if (typeof this.garbage === 'function') this.garbage();
 };
 
 actor.kill.doc = `Remove this actor and all its padawans from existence.`;
 
-actor.interval = function(fn, seconds) {
-  var cur;
-  var stop = function() {
-    cur();
-  }
-  
-  var f = function() {
-    fn.call(this);
-    cur = this.delay(f,seconds);
-  }
-  
-  cur = this.delay(f,seconds);
-  
-  return stop;
-}
-
 actor.delay = function(fn, seconds) {
   var timers = this.timers;
   var stop = function() {
@@ -64,7 +55,8 @@ actor.delay = function(fn, seconds) {
   }
 
   function execute() {
-    fn();
+    if (fn) fn();
+    if (stop.then) stop.then();
     stop();
   }
   

scripts/entity.js

@@ -726,16 +726,6 @@ game.loadurs = function() {
       newur.data = data;
     }
   }
-
-  return;
-  for (var file of io.glob("**.json").filter(f => !ur[f.name()])) {
-    if (file[0] === '.' || file[0] === '_') continue;
-    var newur = ur_from_file(file);
-    if (!newur) continue;
-    Object.assign(newur, {
-      data: file
-    });
-  }
 };
 
 game.ur = {};

scripts/render.js

@@ -178,9 +178,11 @@ render.make_shader = function(shader)
     var data = json.decode(io.slurp(writejson));
     var filemod = io.mod(writejson);
     if (!data.files) break breakme;
-    for (var i of data.files)
-      if (io.mod(i) > filemod)
+    for (var i of data.files) {
+      if (io.mod(i) > filemod) {
         break breakme;
+      }
+    }
   
     profile.report(st, `CACHE make shader from ${file}`);
     var shaderobj = json.decode(io.slurp(writejson));
@@ -426,6 +428,7 @@ var textshader;
 var circleshader;
 var polyshader;
 var slice9shader;
+var parshader;
 
 render.init = function() {
   textshader = render.make_shader("shaders/text_base.cg");
@@ -434,6 +437,7 @@ render.init = function() {
   slice9shader = render.make_shader("shaders/9slice.cg");
   circleshader = render.make_shader("shaders/circle.cg");
   polyshader = render.make_shader("shaders/poly.cg");
+  parshader = render.make_shader("shaders/baseparticle.cg");
   
   render.textshader = textshader;
   
@@ -635,6 +639,13 @@ render.slice9 = function(tex, pos, bb, scale = [tex.width,tex.height], color = C
 
 var textssbo = render.text_ssbo();
 
+render.emitter(emit)
+{
+  var ssbo = emit.draw();
+  render.use_shader(particleshader);
+  render.draw(shape.quad, ssbo, 
+}
+
 render.flush_text = function()
 {
   if (!render.textshader) return;

scripts/tween.js

@@ -103,19 +103,20 @@ Ease.elastic = {
 Ease.elastic.c4 = 2*Math.PI/3;
 Ease.elastic.c5 = 2*Math.PI / 4.5;
 
-var tween = function(obj, val, to, time)
+var tween = function(from, to, time, fn)
 {
   var start = profile.secs(profile.now());
-  var startval = obj[val];
   var update = function(dt) {
     var elapsed = profile.secs(profile.now()) - start;
-    obj[val] = startval.lerp(to, elapsed/time);
+    fn(from.lerp(to,elapsed/time));
     if (elapsed >= time) {
-      obj[val] = to;
+      fn(to);
+      if (stop.then) stop.then();
       stop();
     }
   };
   var stop = Register.update.register(update);
+  return stop;
 }
 
 var Tween = {

shaders/base.cg

@@ -1,7 +1,7 @@
 #blend mix
+#depth off
 #primitive triangle
 #cull none
-#depth off
  
 @vs vs
 in vec3 a_pos;

shaders/baseparticle.cg

@@ -0,0 +1,52 @@
+#depth off
+#blend mix
+
+@vs vs
+in vec2 a_pos;
+in vec2 a_uv;
+
+struct particle {
+  vec2 pos;
+  float angle;
+  float scale;
+  vec4 color;
+};
+
+readonly buffer ssbo {
+  particle par[];
+};
+
+out vec2 uv;
+out vec2 fuv;
+out vec4 color0;
+
+vec2 pos;
+
+uniform mat4 vp;
+
+void main()
+{
+  particle p = par[gl_InstanceIndex];
+  pos = p.pos+(a_pos);
+  color0 = p.color;
+  gl_Position = vp * vec4(pos, 0.0, 1.0);
+}
+@end
+
+@fs fs
+in vec2 uv;
+in vec2 fuv;
+in vec4 color0;
+
+out vec4 color;
+
+texture2D text;
+sampler smp;
+
+void main()
+{
+  color = color0;
+}
+@end
+
+@program text vs fs

shaders/poly.cg

@@ -1,5 +1,5 @@
-#blend mix
 #depth off
+#blend mix
 #primitive triangle
 #cull none
 

source/engine/particle.c

@@ -64,6 +64,7 @@ void emitter_emit(emitter *e, int count, transform *t)
 
 void emitter_draw(emitter *e)
 {
+  printf("drawing %d particles\n", arrlen(e->particles));
   if (arrlen(e->particles) == 0) return;
   arrsetlen(e->verts, arrlen(e->particles));
   for (int i = 0; i < arrlen(e->particles); i++) {