6 files changed, 194 insertions, 0 deletions
diff --git a/Game/States/Build/BuildGrid.tscn b/Game/States/Build/BuildGrid.tscn
new file mode 100644
index 0000000..ffb41d7
--- /dev/null
+++ b/Game/States/Build/BuildGrid.tscn
@@ -0,0 +1,6 @@
+[gd_scene load_steps=2 format=3 uid="uid://8oq8aa1q4c1h"]
+
+[ext_resource type="Script" path="res://Game/States/Build/build_grid.gd" id="1_jige0"]
+
+[node name="BuildGrid" type="Node2D"]
+script = ExtResource("1_jige0")
diff --git a/Game/States/Build/BuilderElement.gd b/Game/States/Build/BuilderElement.gd
new file mode 100644
index 0000000..8315792
--- /dev/null
+++ b/Game/States/Build/BuilderElement.gd
@@ -0,0 +1,87 @@
+class_name BuilderElement
+extends Node2D
+
+
+@export var element: Node2D
+
+var collision_shape: Shape2D
+
+var previous_position: Vector2
+
+var collision_areas: Array[Area2D] = []
+
+
+func _ready():
+	var element_sprite: Sprite2D = element.get_node("Sprite2D")
+	$Sprite2D.texture = element_sprite.texture
+	$Sprite2D.region_enabled = element_sprite.region_enabled
+	$Sprite2D.region_rect = element_sprite.region_rect
+	$Sprite2D.scale = element_sprite.scale
+	$Sprite2D.position = element_sprite.position
+	
+	var element_collision_shape = element.get_node("CollisionShape2D").duplicate() as CollisionShape2D
+	collision_shape = element_collision_shape.shape
+	
+	var tile_size = Client.stage.map.tile_set.tile_size
+	var snapped_size = collision_shape.size.snapped(tile_size)
+	for x in (snapped_size.x / tile_size.x):
+		for y in (snapped_size.y / tile_size.y):
+			var collision_visibility_area_scene = preload("res://UI/CollisionVisibilityArea.tscn")
+			var collision_visibility_area = collision_visibility_area_scene.instantiate()
+			collision_visibility_area.position = Vector2(
+				x * tile_size.x,
+				y * tile_size.y
+			)
+			collision_visibility_area.set_collision_layer_value(3, true)
+			collision_visibility_area.set_collision_mask_value(1, true)
+			collision_visibility_area.set_collision_mask_value(2, true)
+			collision_visibility_area.set_collision_mask_value(3, true)
+			collision_visibility_area.colliding_color = Color(1, 0, 0, 0.5)
+			collision_visibility_area.not_colliding_color = Color(0, 1, 0, 0.25)
+			
+			var shape = RectangleShape2D.new()
+			shape.size = Vector2(tile_size - Vector2i(1, 1))
+			var cshape = CollisionShape2D.new()
+			cshape.shape = shape
+			cshape.position = tile_size / 2
+			
+			collision_visibility_area.add_child(cshape)
+			add_child(collision_visibility_area)
+			
+			collision_areas.append(collision_visibility_area)
+
+
+func _draw():
+	draw_circle(
+		Client.stage.map.tile_set.tile_size,
+		8 + element.attack_range,
+		Color(1, 1, 1, 0.75),
+		false,
+		1.0
+	)
+
+
+func _process(_delta):
+	previous_position = global_position
+	global_position = get_global_mouse_position().snapped(Client.stage.map.tile_set.tile_size) - Vector2(16,16)
+	
+	if global_position != previous_position:
+		queue_redraw()
+
+
+func can_build():
+	for area in collision_areas:
+		if area.get_overlapping_areas().size() > 0:
+			return false
+		
+		if area.get_overlapping_bodies().size() > 0:
+			return false
+	
+	return true
+
+
+func _on_area_entered(_node) -> void:
+	queue_redraw()
+
+func _on_area_exited(_node) -> void:
+	queue_redraw()
diff --git a/Game/States/Build/BuilderElement.tscn b/Game/States/Build/BuilderElement.tscn
new file mode 100644
index 0000000..ea0a857
--- /dev/null
+++ b/Game/States/Build/BuilderElement.tscn
@@ -0,0 +1,19 @@
+[gd_scene load_steps=2 format=3 uid="uid://cleoiemwasbm5"]
+
+[ext_resource type="Script" path="res://Game/States/Build/BuilderElement.gd" id="1_xxacj"]
+
+[node name="BuilderElement" type="Node2D"]
+script = ExtResource("1_xxacj")
+
+[node name="Sprite2D" type="Sprite2D" parent="."]
+texture_filter = 1
+centered = false
+
+[node name="Area2D" type="Area2D" parent="."]
+collision_layer = 4
+collision_mask = 7
+
+[connection signal="area_entered" from="Area2D" to="." method="_on_area_entered"]
+[connection signal="area_exited" from="Area2D" to="." method="_on_area_exited"]
+[connection signal="body_entered" from="Area2D" to="." method="_on_area_entered"]
+[connection signal="body_exited" from="Area2D" to="." method="_on_area_exited"]
diff --git a/Game/States/Build/StateBuild.gd b/Game/States/Build/StateBuild.gd
new file mode 100644
index 0000000..b92020b
--- /dev/null
+++ b/Game/States/Build/StateBuild.gd
@@ -0,0 +1,50 @@
+class_name StateBuild
+extends State
+
+
+static var current_builder_element: BuilderElement
+
+
+func _state_enter():
+	%BuildGrid.visible = true
+	var builder_element_scene = preload("res://Game/States/Build/BuilderElement.tscn")
+	var builder_element = builder_element_scene.instantiate()
+	
+	var tower = preload("res://Towers/Tower.tscn").instantiate() as Tower
+	tower.attack_range = [
+		Client.stage.map.tile_set.tile_size.x * 2,
+		Client.stage.map.tile_set.tile_size.x * 3,
+		Client.stage.map.tile_set.tile_size.x * 4,
+	].pick_random()
+	
+	builder_element.element = tower
+	get_tree().current_scene.add_child(builder_element)
+	current_builder_element = builder_element
+
+
+func _state_exit():
+	%BuildGrid.visible = false
+
+
+func _state_input(event: InputEvent):
+	if event.is_action_pressed("builder_tower_select"):
+		get_viewport().set_input_as_handled()
+		
+		if current_builder_element.can_build():
+			var placed_tower = current_builder_element.element.duplicate() as Tower
+			Client.place_tower(placed_tower, current_builder_element.global_position)
+			
+			placed_tower.selected.connect(func():
+				Client.stage.hud.tower.text = "Range: %s - Power: %s - Speed: %s" % [
+					placed_tower.attack_range, placed_tower.attack_power, placed_tower.attack_speed
+				]
+			)
+			
+			if not Input.is_action_pressed("builder_tower_place_keep"):
+				current_builder_element.queue_free()
+				set_state("StateDefault")
+		
+	if event.is_action_pressed("builder_cancel") or event.is_action_pressed("build_mode_start"):
+		get_viewport().set_input_as_handled()
+		current_builder_element.queue_free()
+		set_state("StateDefault")
diff --git a/Game/States/Build/StateBuild.tscn b/Game/States/Build/StateBuild.tscn
new file mode 100644
index 0000000..84583c2
--- /dev/null
+++ b/Game/States/Build/StateBuild.tscn
@@ -0,0 +1,11 @@
+[gd_scene load_steps=3 format=3 uid="uid://bo5dp02vlui3l"]
+
+[ext_resource type="Script" path="res://Game/States/Build/StateBuild.gd" id="1_s0n2d"]
+[ext_resource type="PackedScene" uid="uid://8oq8aa1q4c1h" path="res://Game/States/Build/BuildGrid.tscn" id="2_iheti"]
+
+[node name="StateBuild" type="Node"]
+script = ExtResource("1_s0n2d")
+
+[node name="BuildGrid" parent="." instance=ExtResource("2_iheti")]
+unique_name_in_owner = true
+visible = false
diff --git a/Game/States/Build/build_grid.gd b/Game/States/Build/build_grid.gd
new file mode 100644
index 0000000..6fd93aa
--- /dev/null
+++ b/Game/States/Build/build_grid.gd
@@ -0,0 +1,21 @@
+extends Node2D
+
+
+func _draw():
+	var area = Client.stage.map.get_used_rect()
+	var cell_size = Client.stage.map.tile_set.tile_size
+	var offset = Client.stage.map.position
+	for row in range(0, area.size.y + 1):
+		draw_line(
+			Vector2(offset.x, offset.y + row * cell_size.y),
+			Vector2(offset.x + area.size.x * cell_size.x, offset.y + row * cell_size.y),
+			Color(1, 1, 1, 0.25),
+			1.0
+		)
+	for column in range(0, area.size.x + 1):
+		draw_line(
+			Vector2(offset.x + column * cell_size.x, offset.y),
+			Vector2(offset.x + column * cell_size.x, offset.y + area.size.y * cell_size.y),
+			Color(1, 1, 1, 0.25),
+			1.0
+		)