extract build mode to class #5

half-earth/materials/cursor.tres

@@ -4,6 +4,6 @@
 
 [resource]
 shader = ExtResource( 1 )
-shader_param/lowColor = Color( 1, 0.960784, 0, 1 )
-shader_param/highColor = Color( 0.921569, 0, 1, 1 )
+shader_param/lowColor = Color( 0, 0, 0, 0 )
+shader_param/highColor = Color( 0, 0.976471, 1, 1 )
 shader_param/t = null

half-earth/nodes/game.tscn

@@ -1,24 +1,33 @@
-[gd_scene load_steps=7 format=2]
+[gd_scene load_steps=9 format=2]
 
 [ext_resource path="res://nodes/grid.tscn" type="PackedScene" id=1]
 [ext_resource path="res://nodes/grid_cursor.tscn" type="PackedScene" id=2]
 [ext_resource path="res://nodes/ui/debug_ui.tscn" type="PackedScene" id=3]
 [ext_resource path="res://nodes/clock.tscn" type="PackedScene" id=4]
-[ext_resource path="res://nodes/interaction_mode.tscn" type="PackedScene" id=5]
+[ext_resource path="res://nodes/interaction_modes/interaction_mode.tscn" type="PackedScene" id=5]
 [ext_resource path="res://nodes/ui/build_mode_ui.tscn" type="PackedScene" id=6]
+[ext_resource path="res://nodes/interaction_modes/build_mode.tscn" type="PackedScene" id=7]
+
+[sub_resource type="Curve" id=1]
+_data = [ Vector2( 0, 0 ), 0.0, 5.0, 0, 0, Vector2( 0.5, 1 ), 0.0, 0.0, 0, 0, Vector2( 1, 0 ), -4.0, 0.0, 0, 0 ]
 
 [node name="Root" type="Node"]
 
+[node name="Clock" parent="." instance=ExtResource( 4 )]
+_autoTick = true
+
 [node name="Grid" parent="." instance=ExtResource( 1 )]
 DiffusionCoefficient = 0.1
 
 [node name="Cursor" parent="." instance=ExtResource( 2 )]
 Grid = NodePath("../Grid")
-
-[node name="Clock" parent="." instance=ExtResource( 4 )]
-_autoTick = true
+_pulseShape = SubResource( 1 )
 
 [node name="Interaction Mode" parent="." instance=ExtResource( 5 )]
+_buildModePath = NodePath("../Build Mode")
+
+[node name="Build Mode" parent="." instance=ExtResource( 7 )]
+_key = 66
 
 [node name="UI" type="Control" parent="."]
 anchor_right = 1.0
@@ -27,10 +36,13 @@ anchor_bottom = 1.0
 [node name="Debug" parent="UI" instance=ExtResource( 3 )]
 
 [node name="Build Mode" parent="UI" instance=ExtResource( 6 )]
+_buildModePath = NodePath("../../Build Mode")
 
 [connection signal="OnPauseChanged" from="Clock" to="UI/Debug" method="_on_Clock_OnPauseChanged"]
 [connection signal="OnTick" from="Clock" to="Grid" method="_on_Clock_OnTick"]
 [connection signal="OnTick" from="Clock" to="UI/Debug" method="_on_Clock_OnTick"]
+[connection signal="OnInteractionModeChanged" from="Interaction Mode" to="Cursor" method="_on_Interaction_Mode_OnInteractionModeChanged"]
 [connection signal="OnInteractionModeChanged" from="Interaction Mode" to="UI/Debug" method="_on_Interaction_Mode_OnInteractionModeChanged"]
-[connection signal="OnInteractionModeChanged" from="Interaction Mode" to="UI/Build Mode" method="_on_Interaction_Mode_OnInteractionModeChanged"]
+[connection signal="OnModeEntered" from="Build Mode" to="Interaction Mode" method="_on_Build_Mode_OnModeEntered"]
+[connection signal="OnModeExited" from="Build Mode" to="Interaction Mode" method="_on_Build_Mode_OnModeExited"]
 [connection signal="OnExit" from="UI/Build Mode" to="Interaction Mode" method="Reset"]

half-earth/nodes/interaction_modes/build_mode.tscn

@@ -0,0 +1,6 @@
+[gd_scene load_steps=2 format=2]
+
+[ext_resource path="res://scripts/interaction_modes/BuildMode.cs" type="Script" id=1]
+
+[node name="Build Mode" type="Node"]
+script = ExtResource( 1 )

half-earth/nodes/interaction_modes/interaction_mode.tscn

@@ -1,7 +1,6 @@
 [gd_scene load_steps=2 format=2]
 
-[ext_resource path="res://scripts/InteractionMode.cs" type="Script" id=1]
+[ext_resource path="res://scripts/interaction_modes/InteractionMode.cs" type="Script" id=1]
 
 [node name="Interaction Mode" type="Node"]
 script = ExtResource( 1 )
-_buildMode = 66

half-earth/scripts/GridCursor.cs

@@ -8,6 +8,17 @@ public class GridCursor : Sprite
     private WorldGrid _grid;
     private ShaderMaterial _material;
 
+    #region Animation
+    [Export]
+    private Curve _pulseShape;
+    [Export]
+    private float _pulseRate = 1.0f;
+    private float PulsePeriod => 1.0f / _pulseRate;
+    #endregion
+
+    private float _elapsed = 0.0f;
+    private bool _pulsing = false;
+
     private const string T = "t";
 
     public override void _Ready()
@@ -48,4 +59,32 @@ public class GridCursor : Sprite
             }
         }
     }
+
+    public override void _Process(float delta)
+    {
+        _elapsed += delta * _pulseRate;
+
+        if (!_pulsing)
+        {
+            _material.SetShaderParam(T, 1f);
+            return;
+        }
+
+        var a = _pulseShape.Interpolate(_elapsed % 1.0f);
+        _material.SetShaderParam(T, a);
+    }
+
+    public void _on_Interaction_Mode_OnInteractionModeChanged(InteractionMode.Mode oldMode, InteractionMode.Mode newMode)
+    {
+        switch (newMode)
+        {
+            case InteractionMode.Mode.SELECT:
+                _pulsing = false;
+                break;
+
+            case InteractionMode.Mode.BUILD:
+                _pulsing = true;
+                break;
+        }
+    }
 }

half-earth/scripts/InteractionMode.cs

@@ -1,63 +0,0 @@
-using Godot;
-using System;
-
-public class InteractionMode : Node
-{
-    [Export]
-    private KeyList _buildMode;
-
-    [Signal]
-    delegate void OnInteractionModeChanged(Mode oldMode, Mode newMode);
-
-    public enum Mode
-    {
-        SELECT = 0,
-        BUILD = 1
-    }
-
-    public void Reset()
-    {
-        Current = Mode.SELECT;
-    }
-
-    public Mode Current
-    {
-        get => _current;
-        set
-        {
-            if (_current == value)
-                return;
-
-            var old = _current;
-            _current = value;
-
-            EmitSignal(nameof(OnInteractionModeChanged), old, _current);
-        }
-    }
-    private Mode _current = Mode.SELECT;
-
-    public override void _Input(InputEvent @event)
-    {
-        base._Input(@event);
-
-        if (!(@event is InputEventKey keyEvent))
-            return;
-
-        if (!keyEvent.Pressed)
-            return;
-
-        var key = (KeyList)keyEvent.Scancode;
-
-        // TODO: this should be developed into a UI stack
-        if (key == KeyList.Escape)
-        {
-            Current = Mode.SELECT;
-            return;
-        }
-
-        if (key == _buildMode)
-        {
-            Current = Mode.BUILD;
-        }
-    }
-}

half-earth/scripts/interaction_modes/BuildMode.cs

@@ -0,0 +1,66 @@
+using Godot;
+using System;
+
+public class BuildMode : Node
+{
+    [Signal]
+    delegate void OnModeEntered();
+    [Signal]
+    delegate void OnModeExited();
+
+    [Export]
+    private KeyList _key;
+
+    public bool Active
+    {
+        get => _active;
+        private set
+        {
+            if (value == _active)
+                return;
+
+            _active = value;
+
+            var signal = _active
+                ? nameof(OnModeEntered)
+                : nameof(OnModeExited);
+            EmitSignal(signal);
+        }
+    }
+    private bool _active;
+
+    private const int NO_TILE_TYPE_SELECTED = -1;
+
+    public int SelectedTileType { get; set; } = NO_TILE_TYPE_SELECTED;
+
+    public override void _Ready()
+    {
+
+    }
+
+    public override void _Input(InputEvent @event)
+    {
+        base._Input(@event);
+
+        if (!(@event is InputEventKey keyEvent))
+            return;
+
+        if (!keyEvent.Pressed)
+            return;
+
+        var key = (KeyList)keyEvent.Scancode;
+
+        // TODO: this should be developed into a UI stack
+        if (key == KeyList.Escape)
+        {
+            Active = false;
+            return;
+        }
+
+        if (key == _key)
+        {
+            Active = true;
+            return;
+        }
+    }
+}

half-earth/scripts/interaction_modes/InteractionMode.cs

@@ -0,0 +1,54 @@
+using Godot;
+using System;
+
+public class InteractionMode : Node
+{
+    [Export]
+    private NodePath _buildModePath;
+    private BuildMode _buildMode;
+
+    [Signal]
+    delegate void OnInteractionModeChanged(Mode oldMode, Mode newMode);
+
+    public enum Mode
+    {
+        SELECT = 0,
+        BUILD = 1
+    }
+
+    public Mode Current { get; private set; }
+
+    public void _on_Build_Mode_OnModeEntered()
+    {
+        ChangeMode(Mode.BUILD);
+    }
+    public void _on_Build_Mode_OnModeExited()
+    {
+        ChangeMode(Mode.SELECT);
+    }
+
+    private void ChangeMode(Mode mode)
+    {
+        if (Current == mode)
+            return;
+
+        var old = Current;
+        Current = mode;
+
+        EmitSignal(nameof(OnInteractionModeChanged), old, mode);
+    }
+
+    public override void _Ready()
+    {
+        base._Ready();
+
+        _buildMode = GetNode<BuildMode>(_buildModePath);
+
+        Reset();
+    }
+
+    public void Reset()
+    {
+        Current = Mode.SELECT;
+    }
+}

half-earth/scripts/ui/BuildModeUI.cs

@@ -6,13 +6,14 @@ public class BuildModeUI : Control
     [Signal]
     delegate void OnExit();
 
-    // Declare member variables here. Examples:
-    // private int a = 2;
-    // private string b = "text";
+    [Export]
+    private NodePath _buildModePath;
+    private BuildMode _buildMode;
 
     // Called when the node enters the scene tree for the first time.
     public override void _Ready()
     {
+        _buildMode = GetNode<BuildMode>(_buildModePath);
         Visible = false;
     }
 
@@ -21,39 +22,15 @@ public class BuildModeUI : Control
         Exit();
     }
 
-    public void _on_Interaction_Mode_OnInteractionModeChanged(InteractionMode.Mode oldMode, InteractionMode.Mode newMode)
-    {
-        if (oldMode == InteractionMode.Mode.BUILD)
-        {
-            Visible = false;
-            return;
-        }
-        if (newMode == InteractionMode.Mode.BUILD)
-        {
-            Visible = true;
-            return;
-        }
-    }
-
     private void Exit()
     {
         EmitSignal(nameof(OnExit));
     }
 
-    public override void _Input(InputEvent @event)
+    public override void _Process(float delta)
     {
-        if (!Visible)
-            return;
+        base._Process(delta);
 
-        if (!(@event is InputEventKey keyEvent))
-            return;
-
-        if (keyEvent.Pressed)
-            return;
-
-        if ((KeyList)keyEvent.Scancode == KeyList.Escape)
-        {
-            Exit();
-        }
+        Visible = _buildMode.Active;
     }
 }