fix examples

camera.cm

@@ -1,7 +1,9 @@
+var backend = use('sdl_gpu')
+
 var cam = {}
 
-/* 
+/*
-  presentation can be one of 
+  presentation can be one of
   letterbox
   overscan
   stretch
@@ -13,6 +15,27 @@ function rect_contains_pt(rect, x, y) {
          y >= rect.y && y <= rect.y + rect.height
 }
 
+function place_rect(src, dst, mode) {
+  if (mode == 'stretch')
+    return {x: 0, y: 0, width: dst.width, height: dst.height}
+
+  var sx = 0, sy = 0, s = 0, w = 0, h = 0, scale = 0
+  if (mode == 'integer_scale') {
+    sx = floor(dst.width / src.width)
+    sy = floor(dst.height / src.height)
+    s = max(1, min(sx, sy))
+    w = src.width * s
+    h = src.height * s
+    return {x: (dst.width - w) / 2, y: (dst.height - h) / 2, width: w, height: h}
+  }
+
+  // letterbox (default)
+  scale = min(dst.width / src.width, dst.height / src.height)
+  w = src.width * scale
+  h = src.height * scale
+  return {x: (dst.width - w) / 2, y: (dst.height - h) / 2, width: w, height: h}
+}
+
 var basecam = {
   pos: {x:0,y:0},
   ortho:true,
@@ -30,36 +53,32 @@ var basecam = {
     return this.y/this.x;
   },
 
-  screen_rect() {
-    var src = { width: this.width, height: this.height }
-    var dst = { x: 0, y: 0, width: gameres.width, height: gameres.height }
-    return place_rect(src, dst, this.presentation, this.align_x, this.align_y, false)
-  },
-
   rect() {
     return {x:0, y:0, width: this.width, height: this.height}
   },
-  
+
   sensor() {
+    var ws = backend.get_window_size()
     return {
-      width: gameres.width,
+      width: ws.width,
-      height: gameres.height,
+      height: ws.height,
     }
   },
 
-    // The rectangle (in window pixels) where this camera’s target will be drawn
+  // The rectangle (in window pixels) where this camera’s target will be drawn
   screen_rect() {
     var src = { width: this.width, height: this.height }
-    var dst = { x: 0, y: 0, width: gameres.width, height: gameres.height }
+    var ws = backend.get_window_size()
-    return place_rect(src, dst, this.presentation, this.align_x, this.align_y, false)
+    var dst = { x: 0, y: 0, width: ws.width, height: ws.height }
+    return place_rect(src, dst, this.presentation)
   },
 
   // --- Space converters ---------------------------------------------------
   // World -> View UV [0..1] independent of pixels/letterbox
   world_to_view_uv(wx, wy) {
-    var ax = this.anchor[0], ay = this.anchor[1]
+    var ax = this.anchor.x, ay = this.anchor.y
-    var u = (wx - this.pos[0]) / this.width + ax
+    var u = (wx - this.pos.x) / this.width + ax
-    var v = (wy - this.pos[1]) / this.height + ay
+    var v = (wy - this.pos.y) / this.height + ay
 
     // apply viewport (maps camera-local UV into sub-rect)
     var vp = this.viewport
@@ -73,9 +92,9 @@ var basecam = {
     var vp = this.viewport
     var uu = (u - vp.x) / vp.width
     var vv = (v - vp.y) / vp.height
-    var ax = this.anchor[0], ay = this.anchor[1]
+    var ax = this.anchor.x, ay = this.anchor.y
-    var wx = this.pos[0] + (uu - ax) * this.width
+    var wx = this.pos.x + (uu - ax) * this.width
-    var wy = this.pos[1] + (vv - ay) * this.height
+    var wy = this.pos.y + (vv - ay) * this.height
     return { x: wx, y: wy }
   },
 
@@ -91,39 +110,38 @@ var basecam = {
   // Window pixels -> World (mouse picking)
   window_to_world(sx, sy) {
     var sr = this.screen_rect()
-    if (!rect_contains_pt(sr, sx, sy)) {
-      // outside letterbox bars; clamp or return null
-      // return null
-    }
     var u = (sx - sr.x) / sr.width
-    var v = (sy - sr.y) / sr.height
+    var v = 1 - (sy - sr.y) / sr.height
     return this.view_uv_to_world(u, v)
   },
 
   // World -> normalized window [0..1]
   world_to_screen_norm(wx, wy) {
     var p = this.world_to_window(wx, wy)
-    return { x: p.x / gameres.width, y: p.y / gameres.height }
+    var ws = backend.get_window_size()
+    return { x: p.x / ws.width, y: p.y / ws.height }
   },
 
   // Normalized window [0..1] -> World
   screen_norm_to_world(nx, ny) {
-    var sx = nx * gameres.width
+    var ws = backend.get_window_size()
-    var sy = ny * gameres.height
+    var sx = nx * ws.width
+    var sy = ny * ws.height
     return this.window_to_world(sx, sy)
   },
 
   screen_to_world: function(sx, sy) {
     // sx, sy are normalized screen coordinates (0-1), bottom left [0,0], top right [1,1]
     var screen_rect = this.screen_rect()
-    var pixel_x = sx * gameres.width
+    var ws = backend.get_window_size()
-    var pixel_y = sy * gameres.height
+    var pixel_x = sx * ws.width
+    var pixel_y = sy * ws.height
     var rel_x = (pixel_x - screen_rect.x) / screen_rect.width
     var rel_y = (pixel_y - screen_rect.y) / screen_rect.height
-    var ax = this.anchor[0]
+    var ax = this.anchor.x
-    var ay = this.anchor[1]
+    var ay = this.anchor.y
-    var world_x = this.pos[0] + (rel_x - ax) * this.width
+    var world_x = this.pos.x + (rel_x - ax) * this.width
-    var world_y = this.pos[1] + (rel_y - ay) * this.height
+    var world_y = this.pos.y + (rel_y - ay) * this.height
     return {x: world_x, y: world_y}
   },
 }

compositor.cm

@@ -123,9 +123,8 @@ function compile_plane(plane_config, ctx, group_effects) {
   // Allocate plane target
   var plane_target = ctx.alloc(res.width, res.height, plane_config.name)
   
-  // Clear plane
+  // Always clear plane target to prevent stale data between frames
-  if (plane_config.clear)
+  push(ctx.passes, {type: 'clear', target: plane_target, color: plane_config.clear || {r: 0, g: 0, b: 0, a: 0}})
-    push(ctx.passes, {type: 'clear', target: plane_target, color: plane_config.clear})
   
   // Render each effect group to temp target, apply effects, composite back
   arrfor(array(effect_groups), gname => {

examples/bunnymark/main.ce

@@ -59,7 +59,7 @@ for (i = 0; i < 100; i++) {
     random.random() * GH
   )
 }
-count_label.text = "Bunnies: " + length(bunnies)
+count_label.text = "Bunnies: " + text(length(bunnies))
 
 // Mouse position tracking
 var mouse_x = GW / 2, mouse_y = GH / 2
@@ -85,12 +85,12 @@ core.start({
   update: function(dt) {
     // Spawn bunnies while clicking
     var down = input.player1().down()
+    var si = 0
     if (down.spawn) {
-      var si = 0
       for (si = 0; si < 50; si++) {
         add_bunny(mouse_x, mouse_y)
       }
-      count_label.text = "Bunnies: " + length(bunnies)
+      count_label.text = "Bunnies: " + text(length(bunnies))
     }
 
     // Update all bunnies
@@ -112,7 +112,7 @@ core.start({
     frame_count++
     fps_timer += dt
     if (fps_timer >= 1) {
-      fps_label.text = "FPS: " + frame_count
+      fps_label.text = "FPS: " + text(frame_count)
       frame_count = 0
       fps_timer -= 1
     }

examples/chess/chess.ce

@@ -3,16 +3,16 @@ var camera = use('camera')
 var compositor = use('compositor')
 var input = use('input')
 var shape = use('shape2d')
-var sprite_factory = use('sprite')
 var text2d = use('text2d')
 
-var Grid = use('grid')
+var Grid = use('examples/chess/grid')
-var MovementSystem = use('movement').MovementSystem
+var MovementSystem = use('examples/chess/movement')
-var startingPos = use('pieces').startingPosition
+var startingPos = use('examples/chess/pieces').startingPosition
-var rules = use('rules')
+var rules = use('examples/chess/rules')
 
 var S = 60
 var GW = S * 8, GH = S * 8
+var move_history = []
 
 var game_cam = camera.make({width: GW, height: GH, pos: {x: GW / 2, y: GH / 2}})
 var hud_cam = camera.make({width: GW, height: GH, pos: {x: GW / 2, y: GH / 2}})
@@ -38,11 +38,11 @@ var select_color = {r: 1, g: 0.84, b: 0, a: 1}
 var valid_color = {r: 0.6, g: 0.8, b: 0.4, a: 1}
 
 var board_shapes = []
-var bx = 0, by = 0
+var bx = 0, by = 0, row = null, col = null
 for (by = 0; by < 8; by++) {
-  var row = []
+  row = []
   for (bx = 0; bx < 8; bx++) {
-    var col = ((bx + by) & 1) ? dark_color : light_color
+    col = ((bx + by) & 1) ? dark_color : light_color
     push(row, shape.rect({
       pos: {x: bx * S + S / 2, y: by * S + S / 2},
       width: S, height: S,
@@ -53,17 +53,25 @@ for (by = 0; by < 8; by++) {
   push(board_shapes, row)
 }
 
-// Piece sprites — one per piece, keyed by piece object
+// Piece letter abbreviations
-var piece_sprites = {}
+var piece_letter = {
+  king: "K", queen: "Q", rook: "R",
+  bishop: "B", knight: "N", pawn: "P"
+}
+var white_color = {r: 1, g: 1, b: 1, a: 1}
+var black_color = {r: 0.1, g: 0.1, b: 0.1, a: 1}
+
+// Piece labels — one per piece, keyed by piece id
+var piece_labels = {}
 var piece_id = 0
 grid.each(function(p) {
   piece_id++
   p._id = piece_id
-  piece_sprites[piece_id] = sprite_factory({
+  piece_labels[text(piece_id)] = text2d({
-    image: p.sprite,
+    text: piece_letter[p.kind],
     pos: {x: p.coord[0] * S + S / 2, y: p.coord[1] * S + S / 2},
-    width: S, height: S,
+    size: 36,
-    anchor_x: 0.5, anchor_y: 0.5,
+    color: (p.colour == 'white') ? white_color : black_color,
     plane: 'game', layer: 1
   })
 })
@@ -86,17 +94,27 @@ function update_status() {
 }
 
 function reset_board_colors() {
-  var x = 0, y = 0
+  var x = 0, y = 0, col = null
   for (y = 0; y < 8; y++) {
     for (x = 0; x < 8; x++) {
-      var col = ((x + y) & 1) ? dark_color : light_color
+      col = ((x + y) & 1) ? dark_color : light_color
       board_shapes[y][x].fill = {r: col.r, g: col.g, b: col.b, a: col.a}
     }
   }
 }
 
+var hover_color = {r: 0.8, g: 0.85, b: 0.6, a: 1}
+
 function highlight_selection() {
   reset_board_colors()
+
+  // Hover highlight
+  if (hover_gx >= 0 && hover_gx < 8 && hover_gy >= 0 && hover_gy < 8) {
+    board_shapes[hover_gy][hover_gx].fill = {
+      r: hover_color.r, g: hover_color.g, b: hover_color.b, a: hover_color.a
+    }
+  }
+
   if (!selectPos) return
 
   // Highlight selected square
@@ -105,9 +123,9 @@ function highlight_selection() {
   }
 
   // Highlight valid moves
-  var i = 0
+  var i = 0, m = null
   for (i = 0; i < length(validMoves); i++) {
-    var m = validMoves[i]
+    m = validMoves[i]
     board_shapes[m[1]][m[0]].fill = {
       r: valid_color.r, g: valid_color.g, b: valid_color.b, a: valid_color.a
     }
@@ -132,22 +150,24 @@ function compute_valid_moves(from) {
 }
 
 function sync_piece_sprites() {
+  var keys = array(piece_labels)
+  var i = 0
+  for (i = 0; i < length(keys); i++) {
+    piece_labels[keys[i]].visible = false
+  }
   grid.each(function(p) {
-    var spr = piece_sprites[p._id]
+    var lbl = piece_labels[text(p._id)]
-    if (!spr) return
+    if (!lbl) return
-    if (p.captured) {
+    lbl.pos.x = p.coord[0] * S + S / 2
-      spr.visible = false
+    lbl.pos.y = p.coord[1] * S + S / 2
-    } else {
+    lbl.visible = true
-      spr.pos.x = p.coord[0] * S + S / 2
-      spr.pos.y = p.coord[1] * S + S / 2
-      spr.visible = true
-    }
   })
 }
 
 // Input handler
 var game_input = {
   on_input: function(action, data) {
+    var clicked = null, cell = null, is_valid = false, i = 0, src_piece = null
     if (!data.pressed) return
 
     if (action == 'cancel') {
@@ -158,13 +178,13 @@ var game_input = {
     }
 
     if (action == 'select' && hover_gx >= 0 && hover_gx < 8 && hover_gy >= 0 && hover_gy < 8) {
-      var clicked = [hover_gx, hover_gy]
+      clicked = [hover_gx, hover_gy]
-      var cell = grid.at(clicked)
+      cell = grid.at(clicked)
 
       if (selectPos) {
         // Try to move
-        var is_valid = false
+        is_valid = false
-        var i = 0
+        i = 0
         for (i = 0; i < length(validMoves); i++) {
           if (validMoves[i][0] == clicked[0] && validMoves[i][1] == clicked[1]) {
             is_valid = true
@@ -173,8 +193,10 @@ var game_input = {
         }
 
         if (is_valid) {
-          var src_piece = grid.at(selectPos)[0]
+          src_piece = grid.at(selectPos)[0]
           if (src_piece && mover.tryMove(src_piece, clicked)) {
+            move_history[] = sq_name(selectPos[0], selectPos[1]) + "-" + sq_name(clicked[0], clicked[1])
+            log.chess("move " + sq_name(selectPos[0], selectPos[1]) + "-" + sq_name(clicked[0], clicked[1]) + " turn=" + mover.turn)
             sync_piece_sprites()
             update_status()
           }
@@ -201,6 +223,66 @@ var game_input = {
 }
 input.player1().possess(game_input)
 
+// --- Probe endpoints for AI play ---
+var probe = use('probe')
+
+var file_letters = "abcdefgh"
+function sq_name(x, y) {
+  return text(file_letters, x, x + 1) + text(y + 1)
+}
+
+function piece_char(p) {
+  var chars = {king: "K", queen: "Q", rook: "R", bishop: "B", knight: "N", pawn: "P"}
+  var c = chars[p.kind]
+  if (p.colour == 'black') c = lower(c)
+  return c
+}
+
+probe.register("chess", {
+  board: function(a) {
+    var rows = []
+    var y = 0, x = 0, cell = null, row = null
+    for (y = 7; y >= 0; y--) {
+      row = ""
+      for (x = 0; x < 8; x++) {
+        cell = grid.at([x, y])
+        if (length(cell)) {
+          row = row + piece_char(cell[0])
+        } else {
+          row = row + "."
+        }
+        if (x < 7) row = row + " "
+      }
+      rows[] = row
+    }
+    return {turn: mover.turn, moves: move_history, board: rows}
+  },
+
+  move: function(a) {
+    var fx = a.fx, fy = a.fy, tx = a.tx, ty = a.ty
+    if (is_null(fx) || is_null(fy) || is_null(tx) || is_null(ty))
+      return {ok: false, error: "need fx fy tx ty"}
+    var from = [fx, fy]
+    var to = [tx, ty]
+    var cell = grid.at(from)
+    if (!length(cell))
+      return {ok: false, error: "no piece at " + sq_name(fx, fy)}
+    var piece = cell[0]
+    if (piece.colour != mover.turn)
+      return {ok: false, error: "not " + piece.colour + "'s turn"}
+    if (!rules.canMove(piece, from, to, grid))
+      return {ok: false, error: "illegal move"}
+    if (mover.tryMove(piece, to)) {
+      move_history[] = sq_name(fx, fy) + "-" + sq_name(tx, ty)
+      log.chess("move " + sq_name(fx, fy) + "-" + sq_name(tx, ty) + " turn=" + mover.turn)
+      sync_piece_sprites()
+      update_status()
+      return {ok: true, move: sq_name(fx, fy) + "-" + sq_name(tx, ty)}
+    }
+    return {ok: false, error: "move rejected"}
+  }
+})
+
 var comp_config = {
   clear: {r: 0.15, g: 0.15, b: 0.2, a: 1},
   planes: [
@@ -210,12 +292,13 @@ var comp_config = {
 }
 
 core.start({
-  width: 640, height: 640, title: "Chess",
+  width: 640, height: 640, title: "Chess", probe: true,
 
   input: function(ev) {
+    var wp = null
     if (ev.type == 'mouse_motion') {
       // Convert pixel coords to grid coords via camera
-      var wp = game_cam.window_to_world(ev.pos.x, ev.pos.y)
+      wp = game_cam.window_to_world(ev.pos[0], ev.pos[1])
       if (wp) {
         hover_gx = floor(wp.x / S)
         hover_gy = floor(wp.y / S)
@@ -224,6 +307,7 @@ core.start({
   },
 
   update: function(dt) {
+    highlight_selection()
   },
 
   render: function() {

examples/chess/grid.cm

@@ -1,3 +1,6 @@
+function px(p) { return !is_null(p.x) ? p.x : p[0] }
+function py(p) { return !is_null(p.y) ? p.y : p[1] }
+
 function grid(w, h) {
   var newgrid = meme(grid_prototype)
   newgrid.width  = w;
@@ -23,25 +26,28 @@ var grid_prototype = {
 
   // alias for cell
   at(pos) {
-    return this.cell(pos.x, pos.y);
+    return this.cell(px(pos), py(pos));
   },
 
   // add an entity into a cell
   add(entity, pos) {
-    push(this.cell(pos.x, pos.y), entity);
+    var cx = px(pos), cy = py(pos);
-    entity.coord = array(pos);
+    push(this.cell(cx, cy), entity);
+    entity.coord = [cx, cy];
   },
 
   // remove an entity from a cell
   remove(entity, pos) {
-    this.cells[pos.y][pos.x] = filter(this.cells[pos.y][pos.x], x => x != entity)
+    var cx = px(pos), cy = py(pos);
+    this.cells[cy][cx] = filter(this.cells[cy][cx], x => x != entity)
   },
 
   // bounds check
   inBounds(pos) {
+    var cx = px(pos), cy = py(pos);
     return (
-      pos.x >= 0 && pos.x < this.width &&
+      cx >= 0 && cx < this.width &&
-      pos.y >= 0 && pos.y < this.height
+      cy >= 0 && cy < this.height
     );
   },
 
@@ -54,7 +60,7 @@ var grid_prototype = {
       for (x = 0; x < this.width; x++) {
         list = this.cells[y][x]
         arrfor(list, function(entity) {
-          fn(entity, entity.coord);
+          fn(entity);
         })
       }
     }
@@ -67,7 +73,7 @@ var grid_prototype = {
     var x = 0;
     for (y = 0; y < this.height; y++) {
       for (x = 0; x < this.width; x++) {
-        out += length(this.cells[y][x]);
+        out += text(length(this.cells[y][x]));
       }
       if (y != this.height - 1) out += "\n";
     }

examples/chess/movement.cm

@@ -19,15 +19,14 @@ var MovementSystem_prototype = {
 
   var victims = this.grid.at(dest);
   if (length(victims) && victims[0].colour == piece.colour) return false;
-  if (length(victims)) victims[0].captured = true;
+  if (length(victims)) {
+    victims[0].captured = true;
+    this.grid.remove(victims[0], dest);
+  }
 
   this.grid.remove(piece, piece.coord);
   this.grid.add   (piece, dest);
 
-  // grid.add() re-creates coord; re-add .x/.y fields:
-  piece.coord.x = dest.x;
-  piece.coord.y = dest.y;
-
   this.turn = (this.turn == 'white') ? 'black' : 'white';
   return true;
   }

examples/chess/pieces.cm

@@ -14,14 +14,14 @@ function startingPosition(grid) {
 
   // pawns
   for (x = 0; x < 8; x++) {
-    grid.add(Piece('pawn', W), [x, 6]);
+    grid.add(Piece('pawn', W), [x, 1]);
-    grid.add(Piece('pawn', B), [x, 1]);
+    grid.add(Piece('pawn', B), [x, 6]);
   }
   // major pieces
   var back = ['rook','knight','bishop','queen','king','bishop','knight','rook'];
   for (x = 0; x < 8; x++) {
-    grid.add(Piece(back[x], W), [x, 7]);
+    grid.add(Piece(back[x], W), [x, 0]);
-    grid.add(Piece(back[x], B), [x, 0]);
+    grid.add(Piece(back[x], B), [x, 7]);
   }
 }
 

examples/chess/rules.cm

@@ -5,8 +5,8 @@ function cy(c) { return !is_null(c.y) ? c.y : c[1] }
 /* simple move-shape checks */
 var deltas = {
   pawn: function (pc, dx, dy, ctx) {
-    var dir  = (pc.colour == 'white') ? -1 : 1;
+    var dir  = (pc.colour == 'white') ? 1 : -1;
-    var base = (pc.colour == 'white') ? 6  : 1;
+    var base = (pc.colour == 'white') ? 1 : 6;
     var one  = (dy == dir && dx == 0 && length(ctx.grid.at(ctx.to)) == 0);
     var two  = (dy == 2 * dir && dx == 0 && cy(pc.coord) == base &&
                length(ctx.grid.at({ x: cx(pc.coord), y: cy(pc.coord)+dir })) == 0 &&
@@ -42,4 +42,4 @@ function canMove(piece, from, to, grid) {
   return clearLine(from, to, grid);
 }
 
-return { canMove };
+return { canMove: canMove };

examples/pong/main.ce

@@ -111,12 +111,12 @@ core.start({
     // Scoring
     if (bx < 0) {
       score2++
-      score_label.text = score1 + "   " + score2
+      score_label.text = text(score1) + "   " + text(score2)
       reset_ball()
     }
     if (bx > GW) {
       score1++
-      score_label.text = score1 + "   " + score2
+      score_label.text = text(score1) + "   " + text(score2)
       reset_ball()
     }
   },

examples/snake/main.ce

@@ -140,6 +140,7 @@ core.start({
     // New head position
     var hx = snake_pos[0].x + dir.x
     var hy = snake_pos[0].y + dir.y
+    var tail = null
 
     // Wrap
     if (hx < 0) hx = gridW - 1
@@ -164,23 +165,27 @@ core.start({
     // Add head with tween from old head position
     var old_wp = grid_to_world(snake_pos[0].x, snake_pos[0].y)
     var new_wp = grid_to_world(hx, hy)
-    snake_pos.unshift({x: hx, y: hy})
+    var new_pos = [{x: hx, y: hy}]
+    for (i = 0; i < length(snake_pos); i++) push(new_pos, snake_pos[i])
+    snake_pos = new_pos
     var head = shape.rect({
       pos: {x: old_wp.x, y: old_wp.y}, width: cellSize - 2, height: cellSize - 2,
       fill: {r: 0, g: 1, b: 0.3, a: 1}, plane: 'game'
     })
     // Smooth tween from old position to new position
     tw.tween(head.pos).to({x: new_wp.x, y: new_wp.y}, move_interval).ease(ease.linear)
-    snake_shapes.unshift(head)
+    var new_shapes = [head]
+    for (i = 0; i < length(snake_shapes); i++) push(new_shapes, snake_shapes[i])
+    snake_shapes = new_shapes
 
     // Eat apple?
     if (hx == apple_gx && hy == apple_gy) {
       score++
-      score_label.text = "Score: " + score
+      score_label.text = "Score: " + text(score)
       spawn_apple()
     } else {
       // Remove tail
-      var tail = pop(snake_shapes)
+      tail = pop(snake_shapes)
       tail.destroy()
       pop(snake_pos)
     }

examples/tetris/main.ce

@@ -45,10 +45,10 @@ var board_shapes = []
 function init_board() {
   board = []
   board_shapes = []
-  var r = 0, c = 0
+  var r = 0, c = 0, row = null, srow = null
   for (r = 0; r < ROWS; r++) {
-    var row = []
+    row = []
-    var srow = []
+    srow = []
     for (c = 0; c < COLS; c++) {
       push(row, null)
       push(srow, shape.rect({
@@ -155,7 +155,7 @@ function rotate_blocks(blocks) {
 
 function clear_lines() {
   var lines = 0
-  var r = ROWS - 1, c = 0, full = false, newRow = null
+  var r = ROWS - 1, c = 0, full = false, newRow = null, sr = 0
   while (r >= 0) {
     full = true
     for (c = 0; c < COLS; c++) {
@@ -164,7 +164,7 @@ function clear_lines() {
     if (full) {
       lines++
       // Shift rows down
-      var sr = r
+      sr = r
       while (sr > 0) {
         for (c = 0; c < COLS; c++) {
           board[sr][c] = board[sr - 1][c]
@@ -191,15 +191,15 @@ function clear_lines() {
   else if (lines == 4) score += 800
   linesCleared += lines
   level = floor(linesCleared / 10)
-  score_label.text = "Score: " + score
+  score_label.text = "Score: " + text(score)
-  level_label.text = "Level: " + level
+  level_label.text = "Level: " + text(level)
 }
 
 function update_piece_shapes() {
-  var i = 0
+  var i = 0, bx = 0, by = 0
   for (i = 0; i < 4; i++) {
-    var bx = pieceX + piece.blocks[i][0]
+    bx = pieceX + piece.blocks[i][0]
-    var by = pieceY + piece.blocks[i][1]
+    by = pieceY + piece.blocks[i][1]
     piece_shapes[i].pos.x = bx * TILE + TILE / 2
     piece_shapes[i].pos.y = by * TILE + TILE / 2
     piece_shapes[i].fill = piece.color
@@ -208,10 +208,10 @@ function update_piece_shapes() {
 }
 
 function update_next_display() {
-  var i = 0
+  var i = 0, bx = 0, by = 0
   for (i = 0; i < 4; i++) {
-    var bx = nextPiece.blocks[i][0]
+    bx = nextPiece.blocks[i][0]
-    var by = nextPiece.blocks[i][1]
+    by = nextPiece.blocks[i][1]
     next_shapes[i].pos.x = (COLS + 1) * TILE + bx * TILE + TILE / 2
     next_shapes[i].pos.y = 20 + by * TILE + TILE / 2
     next_shapes[i].fill = nextPiece.color
@@ -220,13 +220,14 @@ function update_next_display() {
 }
 
 function spawn_piece() {
+  var i = 0
   piece = nextPiece || random_shape()
   nextPiece = random_shape()
   pieceX = 3
   pieceY = 0
   if (collides(pieceX, pieceY, piece.blocks)) {
     gameOver = true
-    var i = 0
+    i = 0
     for (i = 0; i < 4; i++) piece_shapes[i].visible = false
     return
   }

imgui.cpp

@@ -880,7 +880,7 @@ const JSCFunctionListEntry js_imgui_funcs[] = {
   MIST_FUNC_DEF(imgui, menu, 2),
   MIST_FUNC_DEF(imgui, menubar, 1),
   MIST_FUNC_DEF(imgui, mainmenubar, 1),
-  MIST_FUNC_DEF(imgui, menuitem, 3),
+  MIST_FUNC_DEF(imgui, menuitem, 4),
   
   // Input functions
   MIST_FUNC_DEF(imgui, textinput, 2),

input.cm

@@ -83,7 +83,7 @@ function create_user(index, config) {
     
     // Get action down state
     down() {
-      return this.router ? this.router.down : {}
+      return this.router ? this.router.down() : {}
     },
     
     // Possess an entity (clears stack, sets as sole target)

sdl_gpu.cm

@@ -1285,7 +1285,7 @@ function _execute_commands(commands, window_size) {
         current_pass = null
       }
 
-      _do_composite(cmd_buffer, cmd, window_size)
+      _do_composite(cmd_buffer, cmd)
 
     } else if (cmd.cmd == 'end_render') {
       // Flush pending draws
@@ -1960,7 +1960,7 @@ function _get_font_cache(path, size, mode) {
     font =staef.sdf_font(data, size, 12.0, 14, 1.0)
   } else {
     // Bitmap
-    font =staef.font(data, size, false)
+    font =staef.font(data, size)
   }
   if (!font) {
     log.console(`sdl_gpu: Failed to load font ${path}:${size}:${local_mode}`)

shaders/msl/text_msdf.frag.msl

@@ -0,0 +1,64 @@
+#include <metal_stdlib>
+using namespace metal;
+
+struct VertexOut {
+    float4 position [[position]];
+    float2 uv;
+    float4 color;
+};
+
+struct Uniforms {
+    float outline_width;   // Outline width in normalized SDF units (0.0 = no outline, 0.1-0.3 typical)
+    float sharpness;       // Sharpness multiplier (1.0 = normal, higher = sharper)
+    float2 _pad;           // Padding for alignment
+    float4 outline_color;  // Outline color RGBA
+};
+
+// Median of three values - used to combine MSDF channels
+float median(float r, float g, float b) {
+    return max(min(r, g), min(max(r, g), b));
+}
+
+fragment float4 fragment_main(VertexOut in [[stage_in]],
+                              texture2d<float> tex [[texture(0)]],
+                              sampler smp [[sampler(0)]],
+                              constant Uniforms &u [[buffer(0)]]) {
+  // Sample RGB channels from MSDF texture
+  float3 msdf = tex.sample(smp, in.uv).rgb;
+  
+  // Compute signed distance from the median of the three channels
+  float dist = median(msdf.r, msdf.g, msdf.b);
+
+  // Edge is at 0.5 (where distance = 0 in the original SDF)
+  float edge = 0.5;
+  
+  // Calculate anti-aliasing width based on screen-space derivatives
+  // MSDF typically needs tighter AA than single-channel SDF
+  float aa = fwidth(dist);
+  float sharpness = max(u.sharpness, 0.1);
+  aa = aa / sharpness;
+
+  // Fill coverage: inside the glyph
+  float fill = smoothstep(edge - aa, edge + aa, dist);
+
+  // Outline coverage: extends outward from the edge
+  float outline_coverage = 0.0;
+  if (u.outline_width > 0.0) {
+    float outline_edge = edge - u.outline_width;
+    outline_coverage = smoothstep(outline_edge - aa, outline_edge + aa, dist);
+  }
+
+  // Total coverage is the union of fill and outline
+  float total_coverage = max(fill, outline_coverage);
+  
+  // Blend colors: outline where not filled, fill color where filled
+  float3 rgb = in.color.rgb;
+  if (u.outline_width > 0.0) {
+    rgb = mix(u.outline_color.rgb, in.color.rgb, fill);
+  }
+  
+  // Final alpha combines coverage with vertex alpha
+  float a = total_coverage * in.color.a;
+
+  return float4(rgb, a);
+}

shaders/msl/text_sdf.frag.msl

@@ -0,0 +1,59 @@
+#include <metal_stdlib>
+using namespace metal;
+
+struct VertexOut {
+    float4 position [[position]];
+    float2 uv;
+    float4 color;
+};
+
+struct Uniforms {
+    float outline_width;   // Outline width in normalized SDF units (0.0 = no outline, 0.1-0.3 typical)
+    float sharpness;       // Sharpness multiplier (1.0 = normal, higher = sharper)
+    float2 _pad;           // Padding for alignment
+    float4 outline_color;  // Outline color RGBA
+};
+
+fragment float4 fragment_main(VertexOut in [[stage_in]],
+                              texture2d<float> tex [[texture(0)]],
+                              sampler smp [[sampler(0)]],
+                              constant Uniforms &u [[buffer(0)]]) {
+  // Sample distance from alpha channel (SDF fonts store distance in alpha)
+  float dist = tex.sample(smp, in.uv).a;
+
+  // Edge is at 0.5 (where distance = 0 in the original SDF)
+  float edge = 0.5;
+  
+  // Calculate anti-aliasing width based on screen-space derivatives
+  // Sharpness multiplier controls how tight the AA band is
+  float aa = fwidth(dist);
+  float sharpness = max(u.sharpness, 0.1); // Prevent division issues
+  aa = aa / sharpness;
+
+  // Fill coverage: inside the glyph
+  float fill = smoothstep(edge - aa, edge + aa, dist);
+
+  // Outline coverage: extends outward from the edge
+  float outline_coverage = 0.0;
+  if (u.outline_width > 0.0) {
+    // Outline edge is further out (lower distance value = further from glyph center)
+    float outline_edge = edge - u.outline_width;
+    outline_coverage = smoothstep(outline_edge - aa, outline_edge + aa, dist);
+  }
+
+  // Total coverage is the union of fill and outline
+  float total_coverage = max(fill, outline_coverage);
+  
+  // Blend colors: outline where not filled, fill color where filled
+  // fill goes from 0 (outside glyph) to 1 (inside glyph)
+  // outline_coverage goes from 0 (outside outline) to 1 (inside outline+glyph)
+  float3 rgb = in.color.rgb;
+  if (u.outline_width > 0.0) {
+    rgb = mix(u.outline_color.rgb, in.color.rgb, fill);
+  }
+  
+  // Final alpha combines coverage with vertex alpha
+  float a = total_coverage * in.color.a;
+
+  return float4(rgb, a);
+}