decal system & crayons (#5183)

Co-authored-by: Paul <ritter.paul1+git@googlemail.com>

Content.Server/Decals/Commands/AddDecalCommand.cs

@@ -0,0 +1,118 @@
+using System;
+using System.Collections.Generic;
+using Content.Server.Administration;
+using Content.Shared.Administration;
+using Content.Shared.Decals;
+using Content.Shared.Maps;
+using Robust.Shared.Console;
+using Robust.Shared.GameObjects;
+using Robust.Shared.IoC;
+using Robust.Shared.Map;
+using Robust.Shared.Maths;
+using Robust.Shared.Prototypes;
+
+namespace Content.Server.Decals.Commands
+{
+    [AdminCommand(AdminFlags.Mapping)]
+    public sealed class AddDecalCommand : IConsoleCommand
+    {
+        public string Command => "adddecal";
+        public string Description => "Creates a decal on the map";
+        public string Help => $"{Command} <id> <x position> <y position> <gridId> [angle=<angle> zIndex=<zIndex> color=<color>]";
+        public void Execute(IConsoleShell shell, string argStr, string[] args)
+        {
+            if (args.Length < 4 || args.Length > 7)
+            {
+                shell.WriteError($"Received invalid amount of arguments arguments. Expected 4 to 7, got {args.Length}.\nUsage: {Help}");
+                return;
+            }
+
+            if (!IoCManager.Resolve<IPrototypeManager>().HasIndex<DecalPrototype>(args[0]))
+            {
+                shell.WriteError($"Cannot find decalprototype '{args[0]}'.");
+            }
+
+            if (!float.TryParse(args[1], out var x))
+            {
+                shell.WriteError($"Failed parsing x-coordinate '{args[1]}'.");
+                return;
+            }
+
+            if (!float.TryParse(args[2], out var y))
+            {
+                shell.WriteError($"Failed parsing y-coordinate'{args[2]}'.");
+                return;
+            }
+
+            var mapManager = IoCManager.Resolve<IMapManager>();
+            if (!int.TryParse(args[3], out var gridIdRaw) || !mapManager.TryGetGrid(new GridId(gridIdRaw), out var grid))
+            {
+                shell.WriteError($"Failed parsing gridId '{args[3]}'.");
+                return;
+            }
+
+            var coordinates = new EntityCoordinates(grid.GridEntityId, new Vector2(x, y));
+            if (grid.GetTileRef(coordinates).IsSpace())
+            {
+                shell.WriteError($"Cannot create decal on space tile at {coordinates}.");
+                return;
+            }
+
+            Color? color = null;
+            var zIndex = 0;
+            Angle? rotation = null;
+            if (args.Length > 4)
+            {
+                for (int i = 4; i < args.Length; i++)
+                {
+                    var rawValue = args[i].Split('=');
+                    if (rawValue.Length != 2)
+                    {
+                        shell.WriteError($"Failed parsing parameter: '{args[i]}'");
+                        return;
+                    }
+
+                    switch (rawValue[0])
+                    {
+                        case "angle":
+                            if (!double.TryParse(rawValue[1], out var degrees))
+                            {
+                                shell.WriteError($"Failed parsing angle '{rawValue[1]}'.");
+                                return;
+                            }
+                            rotation = Angle.FromDegrees(degrees);
+                            break;
+                        case "zIndex":
+                            if (!int.TryParse(rawValue[1], out zIndex))
+                            {
+                                shell.WriteError($"Failed parsing zIndex '{rawValue[1]}'.");
+                                return;
+                            }
+                            break;
+                        case "color":
+                            if (!Color.TryFromName(rawValue[1], out var colorRaw))
+                            {
+                                shell.WriteError($"Failed parsing color '{rawValue[1]}'.");
+                                return;
+                            }
+
+                            color = colorRaw;
+                            break;
+                        default:
+                            shell.WriteError($"Unknown parameter key '{rawValue[0]}'.");
+                            return;
+                    }
+                }
+            }
+
+            if(EntitySystem.Get<DecalSystem>().TryAddDecal(args[0], coordinates, out var uid, color, rotation, zIndex))
+            {
+                shell.WriteLine($"Successfully created decal {uid}.");
+            }
+            else
+            {
+                shell.WriteError($"Failed adding decal.");
+            }
+        }
+    }
+}