metabuilder/gameengine/examples/experiment/workflow_cubes_advanced.json

{
  "name": "Advanced Cubes - With Control Structures",
  "description": "Demonstrates loops, conditionals, and scopes in workflow JSON",
  "version": "2.0.0",
  "id": "workflow_advanced_cubes",

  "variables": {
    "grid_width": {"type": "number", "value": 11},
    "grid_height": {"type": "number", "value": 11},
    "cube_spacing": {"type": "number", "value": 3.0},
    "grid_start_x": {"type": "number", "value": -15.0},
    "grid_start_y": {"type": "number", "value": -15.0},
    "rotation_offset_x": {"type": "number", "value": 0.21},
    "rotation_offset_y": {"type": "number", "value": 0.37},
    "camera_distance": {"type": "number", "value": 35.0},
    "camera_fov": {"type": "number", "value": 60.0},
    "window_width": {"type": "number", "value": 1280},
    "window_height": {"type": "number", "value": 720},
    "num_frames": {"type": "number", "value": 120},
    "enable_advanced_features": {"type": "boolean", "value": true},
    "cube_count": {"type": "number", "value": 0}
  },

  "nodes": [
    {
      "id": "init_graphics",
      "type": "graphics.init",
      "parameters": {
        "window_width": "${variables.window_width}",
        "window_height": "${variables.window_height}",
        "window_title": "Advanced Cubes with Control Flow"
      }
    },

    {
      "id": "init_scope",
      "type": "scope",
      "locals": {
        "temp_width": 8,
        "temp_height": 8,
        "loop_counter": 0
      },
      "nodes": [
        {
          "id": "create_cube_geometry",
          "type": "geometry.create_cube",
          "parameters": {
            "vertex_colors": "${variables.cube_vertex_colors}"
          }
        }
      ]
    },

    {
      "id": "conditional_shader_load",
      "type": "if",
      "condition": {
        "op": "==",
        "left": "${variables.enable_advanced_features}",
        "right": true
      },
      "then": [
        {
          "id": "load_shaders_advanced",
          "type": "shader.load_binary",
          "parameters": {
            "vertex_shader_path": "./experiment/vs_cubes.bin",
            "fragment_shader_path": "./experiment/fs_cubes.bin"
          }
        }
      ],
      "else": [
        {
          "id": "load_shaders_basic",
          "type": "shader.load_binary",
          "parameters": {
            "vertex_shader_path": "./experiment/vs_cubes.bin",
            "fragment_shader_path": "./experiment/fs_cubes.bin"
          }
        }
      ]
    },

    {
      "id": "setup_camera",
      "type": "camera.setup",
      "parameters": {
        "camera_distance": "${variables.camera_distance}",
        "camera_fov": "${variables.camera_fov}",
        "aspect_ratio": "${variables.window_width}/${variables.window_height}"
      }
    },

    {
      "id": "grid_loop",
      "type": "for",
      "variable": "row",
      "start": 0,
      "end": "${variables.grid_height}",
      "step": 1,
      "nodes": [
        {
          "id": "inner_column_loop",
          "type": "for",
          "variable": "col",
          "start": 0,
          "end": "${variables.grid_width}",
          "step": 1,
          "nodes": [
            {
              "id": "calculate_cube_position",
              "type": "scope",
              "locals": {
                "x_pos": "${variables.grid_start_x}",
                "y_pos": "${variables.grid_start_y}",
                "spacing": "${variables.cube_spacing}",
                "rot_offset_x": "${variables.rotation_offset_x}",
                "rot_offset_y": "${variables.rotation_offset_y}"
              },
              "nodes": [
                {
                  "id": "increment_cube_count",
                  "type": "var",
                  "op": "increment",
                  "name": "cube_count"
                },
                {
                  "id": "render_single_cube",
                  "type": "render.cube_grid",
                  "parameters": {
                    "grid_width": 1,
                    "grid_height": 1,
                    "grid_spacing": "${variables.cube_spacing}",
                    "grid_start_x": "${variables.grid_start_x}",
                    "grid_start_y": "${variables.grid_start_y}",
                    "rotation_offset_x": "${variables.rotation_offset_x}",
                    "rotation_offset_y": "${variables.rotation_offset_y}",
                    "num_frames": 1
                  }
                }
              ]
            }
          ]
        },
        {
          "id": "log_row_progress",
          "type": "var",
          "op": "log",
          "message": "Completed row ${row}"
        }
      ]
    },

    {
      "id": "main_render_loop",
      "type": "while",
      "condition": {
        "op": "<",
        "left": "${variables.cube_count}",
        "right": "${variables.num_frames}"
      },
      "nodes": [
        {
          "id": "render_all_cubes",
          "type": "render.cube_grid",
          "parameters": {
            "grid_width": "${variables.grid_width}",
            "grid_height": "${variables.grid_height}",
            "grid_spacing": "${variables.cube_spacing}",
            "grid_start_x": "${variables.grid_start_x}",
            "grid_start_y": "${variables.grid_start_y}",
            "rotation_offset_x": "${variables.rotation_offset_x}",
            "rotation_offset_y": "${variables.rotation_offset_y}",
            "num_frames": 1
          }
        },
        {
          "id": "increment_frame",
          "type": "var",
          "op": "increment",
          "name": "cube_count"
        }
      ]
    },

    {
      "id": "final_scope",
      "type": "scope",
      "locals": {
        "final_frame_count": "${variables.cube_count}",
        "success": true
      },
      "nodes": [
        {
          "id": "conditional_screenshot",
          "type": "if",
          "condition": {
            "op": "==",
            "left": "${success}",
            "right": true
          },
          "then": [
            {
              "id": "capture_screenshot",
              "type": "graphics.capture_screenshot",
              "parameters": {
                "enabled": true,
                "output_path": "test_outputs/workflow_advanced_frame.png",
                "frame_number": "${final_frame_count}"
              }
            }
          ]
        }
      ]
    },

    {
      "id": "exit",
      "type": "system.exit",
      "parameters": {
        "status_code": 0,
        "message": "Successfully rendered with control structures!"
      }
    }
  ]
}