{"id":344,"date":"2025-12-04T17:00:15","date_gmt":"2025-12-04T17:00:15","guid":{"rendered":"https:\/\/blog.lerk.ing\/?p=344"},"modified":"2025-12-07T19:19:00","modified_gmt":"2025-12-07T19:19:00","slug":"tetris-nextpreview-script","status":"publish","type":"post","link":"https:\/\/blog.lerk.ing\/index.php\/2025\/12\/04\/tetris-nextpreview-script\/","title":{"rendered":"Tetris 09 &#8211; NextPreview script"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Open the '<strong>next_preview.gd<\/strong>' script.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">We start by adding constants right after the '<strong>extends Node2D<\/strong>' line. And then we add the '<strong>func update_preview()<\/strong>' function.<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:block;padding:16px 0 0 16px;margin-bottom:-1px;width:100%;text-align:left;background-color:#2e3440ff\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"54\" height=\"14\" viewBox=\"0 0 54 14\"><g fill=\"none\" fill-rule=\"evenodd\" transform=\"translate(1 1)\"><circle cx=\"6\" cy=\"6\" r=\"6\" fill=\"#FF5F56\" stroke=\"#E0443E\" stroke-width=\".5\"><\/circle><circle cx=\"26\" cy=\"6\" r=\"6\" fill=\"#FFBD2E\" stroke=\"#DEA123\" stroke-width=\".5\"><\/circle><circle cx=\"46\" cy=\"6\" r=\"6\" fill=\"#27C93F\" stroke=\"#1AAB29\" stroke-width=\".5\"><\/circle><\/g><\/svg><\/span><span role=\"button\" tabindex=\"0\" style=\"color:#d8dee9ff;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>extends Node2D\n\nconst CELL_SIZE := 16\n\nvar shape_key: String = \"\"\nvar shapes: Dictionary = {}\nvar colors: Dictionary = {}\n\nfunc update_preview(new_shape_key: String, new_shapes: Dictionary, new_colors: Dictionary) -> void:\n\tshape_key = new_shape_key\n\tshapes = new_shapes\n\tcolors = new_colors\n\tqueue_redraw()<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki nord\" style=\"background-color: #2e3440ff\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #81A1C1\">extends<\/span><span style=\"color: #8FBCBB; font-weight: bold\"> Node2D<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">const<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">CELL_SIZE<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">:<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #B48EAD\">16<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">var<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">shape_key<\/span><span style=\"color: #ECEFF4\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">String<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #A3BE8C\">&quot;&quot;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">var<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">shapes<\/span><span style=\"color: #ECEFF4\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Dictionary<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> {}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">var<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">colors<\/span><span style=\"color: #ECEFF4\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Dictionary<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> {}<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">func<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">update_preview<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">new_shape_key<\/span><span style=\"color: #ECEFF4\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">String<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">new_shapes<\/span><span style=\"color: #ECEFF4\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Dictionary<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">new_colors<\/span><span style=\"color: #ECEFF4\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Dictionary<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> -&gt; <\/span><span style=\"color: #81A1C1\">void<\/span><span style=\"color: #ECEFF4\">:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t<\/span><span style=\"color: #D8DEE9\">shape_key<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">new_shape_key<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t<\/span><span style=\"color: #D8DEE9\">shapes<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">new_shapes<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t<\/span><span style=\"color: #D8DEE9\">colors<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">new_colors<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t<\/span><span style=\"color: #88C0D0\">queue_redraw<\/span><span style=\"color: #ECEFF4\">()<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Now we need a function to show the next shape - '<strong>func _draw()<\/strong>'.<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:block;padding:16px 0 0 16px;margin-bottom:-1px;width:100%;text-align:left;background-color:#2e3440ff\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"54\" height=\"14\" viewBox=\"0 0 54 14\"><g fill=\"none\" fill-rule=\"evenodd\" transform=\"translate(1 1)\"><circle cx=\"6\" cy=\"6\" r=\"6\" fill=\"#FF5F56\" stroke=\"#E0443E\" stroke-width=\".5\"><\/circle><circle cx=\"26\" cy=\"6\" r=\"6\" fill=\"#FFBD2E\" stroke=\"#DEA123\" stroke-width=\".5\"><\/circle><circle cx=\"46\" cy=\"6\" r=\"6\" fill=\"#27C93F\" stroke=\"#1AAB29\" stroke-width=\".5\"><\/circle><\/g><\/svg><\/span><span role=\"button\" tabindex=\"0\" style=\"color:#d8dee9ff;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>func _draw() -> void:\n\t# Debug frame so we can see that the node exists\n\tvar debug_rect := Rect2(Vector2.ZERO, Vector2(80, 80))\n\tdraw_rect(debug_rect, Color(0.2, 0.2, 0.2, 1.0), false, 2.0)\n\n\tif shape_key == \"\" or not shapes.has(shape_key):\n\t\treturn\n\n\tvar blocks: Array = shapes&#91;shape_key&#93;\n\n\t# Find bounding box of the shape\n\tvar min_x := 999\n\tvar max_x := -999\n\tvar min_y := 999\n\tvar max_y := -999\n\n\tfor b in blocks:\n\t\tvar v: Vector2i = b\n\t\tif v.x &lt; min_x:\n\t\t\tmin_x = v.x\n\t\tif v.x > max_x:\n\t\t\tmax_x = v.x\n\t\tif v.y &lt; min_y:\n\t\t\tmin_y = v.y\n\t\tif v.y > max_y:\n\t\t\tmax_y = v.y\n\n\tvar width := (max_x - min_x + 1) * CELL_SIZE\n\tvar height := (max_y - min_y + 1) * CELL_SIZE\n\n\t# Center the shape in our local 80x80 area\n\tvar total_size := Vector2(width, height)\n\tvar preview_center := Vector2(40, 40)  # middle of debug_rect\n\tvar offset := preview_center - total_size * 0.5\n\n\tvar color: Color = Color.WHITE\n\tif colors.has(shape_key):\n\t\tcolor = colors&#91;shape_key&#93; as Color\n\n\tfor b in blocks:\n\t\tvar v: Vector2i = b\n\t\tvar x := (v.x - min_x) * CELL_SIZE\n\t\tvar y := (v.y - min_y) * CELL_SIZE\n\t\tvar rect := Rect2(offset + Vector2(x, y), Vector2(CELL_SIZE, CELL_SIZE))\n\t\tdraw_rect(rect.grow(-1), color, true)<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki nord\" style=\"background-color: #2e3440ff\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #81A1C1\">func<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">_draw<\/span><span style=\"color: #ECEFF4\">()<\/span><span style=\"color: #D8DEE9FF\"> -&gt; <\/span><span style=\"color: #81A1C1\">void<\/span><span style=\"color: #ECEFF4\">:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t<\/span><span style=\"color: #616E88\"># Debug frame so we can see that the node exists<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t<\/span><span style=\"color: #81A1C1\">var<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">debug_rect<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">:<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Rect2<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #8FBCBB\">Vector2<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9\">ZERO<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Vector2<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #B48EAD\">80<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #B48EAD\">80<\/span><span style=\"color: #ECEFF4\">))<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t<\/span><span style=\"color: #88C0D0\">draw_rect<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">debug_rect<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Color<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #B48EAD\">0.2<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #B48EAD\">0.2<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #B48EAD\">0.2<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #B48EAD\">1.0<\/span><span style=\"color: #ECEFF4\">),<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">false<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #B48EAD\">2.0<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t<\/span><span style=\"color: #81A1C1\">if<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">shape_key<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">==<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #A3BE8C\">&quot;&quot;<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">or<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">not<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">shapes<\/span><span style=\"color: #D8DEE9FF\">.<\/span><span style=\"color: #88C0D0\">has<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">shape_key<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\">:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t\t<\/span><span style=\"color: #81A1C1\">return<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t<\/span><span style=\"color: #81A1C1\">var<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">blocks<\/span><span style=\"color: #ECEFF4\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Array<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">shapes<\/span><span style=\"color: #D8DEE9FF\">&#91;<\/span><span style=\"color: #D8DEE9\">shape_key<\/span><span style=\"color: #D8DEE9FF\">&#93;<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t<\/span><span style=\"color: #616E88\"># Find bounding box of the shape<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t<\/span><span style=\"color: #81A1C1\">var<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">min_x<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">:<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #B48EAD\">999<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t<\/span><span style=\"color: #81A1C1\">var<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">max_x<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">:<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #B48EAD\">-999<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t<\/span><span style=\"color: #81A1C1\">var<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">min_y<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">:<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #B48EAD\">999<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t<\/span><span style=\"color: #81A1C1\">var<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">max_y<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">:<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #B48EAD\">-999<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t<\/span><span style=\"color: #81A1C1\">for<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">b<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">in<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">blocks<\/span><span style=\"color: #D8DEE9FF\">:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t\t<\/span><span style=\"color: #81A1C1\">var<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">v<\/span><span style=\"color: #ECEFF4\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Vector2i<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">b<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t\t<\/span><span style=\"color: #81A1C1\">if<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">v<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9\">x<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">&lt;<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">min_x<\/span><span style=\"color: #D8DEE9FF\">:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t\t\t<\/span><span style=\"color: #D8DEE9\">min_x<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">v<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9\">x<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t\t<\/span><span style=\"color: #81A1C1\">if<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">v<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9\">x<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">&gt;<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">max_x<\/span><span style=\"color: #D8DEE9FF\">:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t\t\t<\/span><span style=\"color: #D8DEE9\">max_x<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">v<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9\">x<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t\t<\/span><span style=\"color: #81A1C1\">if<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">v<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9\">y<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">&lt;<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">min_y<\/span><span style=\"color: #D8DEE9FF\">:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t\t\t<\/span><span style=\"color: #D8DEE9\">min_y<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">v<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9\">y<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t\t<\/span><span style=\"color: #81A1C1\">if<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">v<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9\">y<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">&gt;<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">max_y<\/span><span style=\"color: #D8DEE9FF\">:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t\t\t<\/span><span style=\"color: #D8DEE9\">max_y<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">v<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9\">y<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t<\/span><span style=\"color: #81A1C1\">var<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">width<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">:<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">max_x<\/span><span style=\"color: #D8DEE9FF\"> - <\/span><span style=\"color: #D8DEE9\">min_x<\/span><span style=\"color: #D8DEE9FF\"> + <\/span><span style=\"color: #B48EAD\">1<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> * <\/span><span style=\"color: #81A1C1\">CELL_SIZE<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t<\/span><span style=\"color: #81A1C1\">var<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">height<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">:<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">max_y<\/span><span style=\"color: #D8DEE9FF\"> - <\/span><span style=\"color: #D8DEE9\">min_y<\/span><span style=\"color: #D8DEE9FF\"> + <\/span><span style=\"color: #B48EAD\">1<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> * <\/span><span style=\"color: #81A1C1\">CELL_SIZE<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t<\/span><span style=\"color: #616E88\"># Center the shape in our local 80x80 area<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t<\/span><span style=\"color: #81A1C1\">var<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">total_size<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">:<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Vector2<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">width<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">height<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t<\/span><span style=\"color: #81A1C1\">var<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">preview_center<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">:<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Vector2<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #B48EAD\">40<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #B48EAD\">40<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\">  <\/span><span style=\"color: #616E88\"># middle of debug_rect<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t<\/span><span style=\"color: #81A1C1\">var<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">offset<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">:<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">preview_center<\/span><span style=\"color: #D8DEE9FF\"> - <\/span><span style=\"color: #D8DEE9\">total_size<\/span><span style=\"color: #D8DEE9FF\"> * <\/span><span style=\"color: #B48EAD\">0.5<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t<\/span><span style=\"color: #81A1C1\">var<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">color<\/span><span style=\"color: #ECEFF4\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Color<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Color<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9\">WHITE<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t<\/span><span style=\"color: #81A1C1\">if<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">colors<\/span><span style=\"color: #D8DEE9FF\">.<\/span><span style=\"color: #88C0D0\">has<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">shape_key<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\">:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t\t<\/span><span style=\"color: #D8DEE9\">color<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">colors<\/span><span style=\"color: #D8DEE9FF\">&#91;<\/span><span style=\"color: #D8DEE9\">shape_key<\/span><span style=\"color: #D8DEE9FF\">&#93; <\/span><span style=\"color: #81A1C1\">as<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Color<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t<\/span><span style=\"color: #81A1C1\">for<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">b<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">in<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">blocks<\/span><span style=\"color: #D8DEE9FF\">:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t\t<\/span><span style=\"color: #81A1C1\">var<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">v<\/span><span style=\"color: #ECEFF4\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Vector2i<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">b<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t\t<\/span><span style=\"color: #81A1C1\">var<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">x<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">:<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">v<\/span><span style=\"color: #D8DEE9FF\">.<\/span><span style=\"color: #D8DEE9\">x<\/span><span style=\"color: #D8DEE9FF\"> - <\/span><span style=\"color: #D8DEE9\">min_x<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> * <\/span><span style=\"color: #81A1C1\">CELL_SIZE<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t\t<\/span><span style=\"color: #81A1C1\">var<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">y<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">:<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">v<\/span><span style=\"color: #D8DEE9FF\">.<\/span><span style=\"color: #D8DEE9\">y<\/span><span style=\"color: #D8DEE9FF\"> - <\/span><span style=\"color: #D8DEE9\">min_y<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> * <\/span><span style=\"color: #81A1C1\">CELL_SIZE<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t\t<\/span><span style=\"color: #81A1C1\">var<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">rect<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">:<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Rect2<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">offset<\/span><span style=\"color: #D8DEE9FF\"> + <\/span><span style=\"color: #8FBCBB\">Vector2<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">x<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">y<\/span><span style=\"color: #ECEFF4\">),<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Vector2<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #81A1C1\">CELL_SIZE<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">CELL_SIZE<\/span><span style=\"color: #ECEFF4\">))<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">\t\t<\/span><span style=\"color: #88C0D0\">draw_rect<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">rect<\/span><span style=\"color: #D8DEE9FF\">.<\/span><span style=\"color: #88C0D0\">grow<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #B48EAD\">-1<\/span><span style=\"color: #ECEFF4\">),<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">color<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">true<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">This concludes the '<strong>next_preview.gd<\/strong>' script. Save it.<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-3a88641f wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/blog.lerk.ing\/index.php\/2025\/12\/04\/tetris-main-script\/\">Main script<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-buttons is-content-justification-right is-layout-flex wp-container-core-buttons-is-layout-bf881693 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/blog.lerk.ing\/index.php\/2025\/12\/05\/tetris-game-over-script\/\">Game Over script<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/blog.lerk.ing\/index.php\/codingpirates\/godot-tetris\/\" data-type=\"page\" data-id=\"595\">Introduction<\/a><\/p>\n\n\n<div class=\"wp-block-post-author\"><div class=\"wp-block-post-author__avatar\"><img alt='' src='https:\/\/secure.gravatar.com\/avatar\/ea6dfb9dc4a5852f1a3635e4cb2c81deba1b9e5a2fec2c492f0abd9df8882821?s=48&#038;d=mm&#038;r=g' srcset='https:\/\/secure.gravatar.com\/avatar\/ea6dfb9dc4a5852f1a3635e4cb2c81deba1b9e5a2fec2c492f0abd9df8882821?s=96&#038;d=mm&#038;r=g 2x' class='avatar avatar-48 photo' height='48' width='48' \/><\/div><div class=\"wp-block-post-author__content\"><p class=\"wp-block-post-author__name\">Jan Lerking<\/p><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Open the &#8216;next_preview.gd&#8217; script. We start by adding constants right after the &#8216;extends Node2D&#8217; line. And then we add the &#8216;func update_preview()&#8217; function. Now we need a function to show the next shape &#8211; &#8216;func _draw()&#8217;. This concludes the &#8216;next_preview.gd&#8217; script. Save it. Introduction<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[70,74,71],"tags":[67,75,69,77,72],"class_list":["post-344","post","type-post","status-publish","format-standard","hentry","category-coding-pirates","category-gdscript20","category-godotgameengine","tag-codingpirates","tag-gdscript20","tag-godotgameengine","tag-godot_tertris","tag-programming"],"_links":{"self":[{"href":"https:\/\/blog.lerk.ing\/index.php\/wp-json\/wp\/v2\/posts\/344","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.lerk.ing\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.lerk.ing\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.lerk.ing\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.lerk.ing\/index.php\/wp-json\/wp\/v2\/comments?post=344"}],"version-history":[{"count":20,"href":"https:\/\/blog.lerk.ing\/index.php\/wp-json\/wp\/v2\/posts\/344\/revisions"}],"predecessor-version":[{"id":649,"href":"https:\/\/blog.lerk.ing\/index.php\/wp-json\/wp\/v2\/posts\/344\/revisions\/649"}],"wp:attachment":[{"href":"https:\/\/blog.lerk.ing\/index.php\/wp-json\/wp\/v2\/media?parent=344"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.lerk.ing\/index.php\/wp-json\/wp\/v2\/categories?post=344"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.lerk.ing\/index.php\/wp-json\/wp\/v2\/tags?post=344"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}