sprite vert

sprite.cm

@@ -1,6 +1,10 @@
-// sprite
+// sprite.cm - Sprite node factory
+//
+// Returns a function that creates sprite instances via meme()
+
 var sprite = {
-  pos: {x:0, y:0},
+  type: 'sprite',
+  pos: null,
   layer: 0,
   image: null,
   width: 1,
@@ -9,10 +13,95 @@ var sprite = {
   anchor_y: 0,
   scale_x: 1,
   scale_y: 1,
-  color: {r:1, g:1, b:1, a:1},
-  animation: null,     // 'walk', 'attack', etc
+  color: null,
+  uv_rect: null,
+  slice: null,
+  tile: null,
+  material: null,
+  animation: null,
   frame: 0,
-  opacity: 1
+  opacity: 1,
+  
+  // Dirty tracking
+  dirty: 7, // DIRTY.ALL
+  
+  // Cached geometry (for retained mode)
+  geom_cache: null,
+  
+  // Setters that mark dirty
+  set_pos: function(x, y) {
+    if (!this.pos) this.pos = {x: 0, y: 0}
+    if (this.pos.x == x && this.pos.y == y) return this
+    this.pos.x = x
+    this.pos.y = y
+    this.dirty |= 1 // TRANSFORM
+    return this
+  },
+  
+  set_image: function(img) {
+    if (this.image == img) return this
+    this.image = img
+    this.dirty |= 2 // CONTENT
+    return this
+  },
+  
+  set_size: function(w, h) {
+    if (this.width == w && this.height == h) return this
+    this.width = w
+    this.height = h
+    this.dirty |= 2 // CONTENT
+    return this
+  },
+  
+  set_anchor: function(x, y) {
+    if (this.anchor_x == x && this.anchor_y == y) return this
+    this.anchor_x = x
+    this.anchor_y = y
+    this.dirty |= 1 // TRANSFORM
+    return this
+  },
+  
+  set_color: function(r, g, b, a) {
+    if (!this.color) this.color = {r: 1, g: 1, b: 1, a: 1}
+    if (this.color.r == r && this.color.g == g && this.color.b == b && this.color.a == a) return this
+    this.color.r = r
+    this.color.g = g
+    this.color.b = b
+    this.color.a = a
+    this.dirty |= 2 // CONTENT
+    return this
+  },
+  
+  set_opacity: function(o) {
+    if (this.opacity == o) return this
+    this.opacity = o
+    this.dirty |= 2 // CONTENT
+    return this
+  }
 }
 
-return sprite
+// Factory function
+return function(props) {
+  var s = meme(sprite)
+  s.pos = {x: 0, y: 0}
+  s.color = {r: 1, g: 1, b: 1, a: 1}
+  s.dirty = 7
+  
+  if (props) {
+    for (var k in props) {
+      if (k == 'pos' && props.pos) {
+        s.pos.x = props.pos.x || 0
+        s.pos.y = props.pos.y || 0
+      } else if (k == 'color' && props.color) {
+        s.color.r = props.color.r != null ? props.color.r : 1
+        s.color.g = props.color.g != null ? props.color.g : 1
+        s.color.b = props.color.b != null ? props.color.b : 1
+        s.color.a = props.color.a != null ? props.color.a : 1
+      } else {
+        s[k] = props[k]
+      }
+    }
+  }
+  
+  return s
+}