From aa242beb73a1f6cf0bec2eb8dabd77b8f34f83bf Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lukas=20S=C3=A4gesser?= <lukas.saegesser@gmail.com>
Date: Tue, 13 Jan 2015 14:17:51 +0100
Subject: [PATCH] - how to use PolygonPathFinder from GD Script

---
 demos/2d/polygon_path_finder_demo/.fscache    |   4 +
 demos/2d/polygon_path_finder_demo/engine.cfg  |   5 ++
 demos/2d/polygon_path_finder_demo/icon.png    | Bin 0 -> 3639 bytes
 .../polygon_path_finder_demo/icon.png.flags   |   1 +
 .../new_scene_poly_with_holes.scn             | Bin 0 -> 2609 bytes
 .../polygonpathfinder.gd                      |  80 ++++++++++++++++++
 6 files changed, 90 insertions(+)
 create mode 100644 demos/2d/polygon_path_finder_demo/.fscache
 create mode 100644 demos/2d/polygon_path_finder_demo/engine.cfg
 create mode 100644 demos/2d/polygon_path_finder_demo/icon.png
 create mode 100644 demos/2d/polygon_path_finder_demo/icon.png.flags
 create mode 100644 demos/2d/polygon_path_finder_demo/new_scene_poly_with_holes.scn
 create mode 100644 demos/2d/polygon_path_finder_demo/polygonpathfinder.gd

diff --git a/demos/2d/polygon_path_finder_demo/.fscache b/demos/2d/polygon_path_finder_demo/.fscache
new file mode 100644
index 00000000000..f699ca5849f
--- /dev/null
+++ b/demos/2d/polygon_path_finder_demo/.fscache
@@ -0,0 +1,4 @@
+::res://::1421147952
+icon.png::ImageTexture::1420046079::
+new_scene_poly_with_holes.scn::PackedScene::1421147952::
+polygonpathfinder.gd::GDScript::1421146502::
diff --git a/demos/2d/polygon_path_finder_demo/engine.cfg b/demos/2d/polygon_path_finder_demo/engine.cfg
new file mode 100644
index 00000000000..41c4adf7017
--- /dev/null
+++ b/demos/2d/polygon_path_finder_demo/engine.cfg
@@ -0,0 +1,5 @@
+[application]
+
+name="polygon_path_finder_demo"
+main_scene="res://new_scene_poly_with_holes.scn"
+icon="icon.png"
diff --git a/demos/2d/polygon_path_finder_demo/icon.png b/demos/2d/polygon_path_finder_demo/icon.png
new file mode 100644
index 0000000000000000000000000000000000000000..0c422e37b0ea9e6ad2901c8d425cb12f4d37694f
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diff --git a/demos/2d/polygon_path_finder_demo/icon.png.flags b/demos/2d/polygon_path_finder_demo/icon.png.flags
new file mode 100644
index 00000000000..dbef2209e80
--- /dev/null
+++ b/demos/2d/polygon_path_finder_demo/icon.png.flags
@@ -0,0 +1 @@
+gen_mipmaps=true
diff --git a/demos/2d/polygon_path_finder_demo/new_scene_poly_with_holes.scn b/demos/2d/polygon_path_finder_demo/new_scene_poly_with_holes.scn
new file mode 100644
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diff --git a/demos/2d/polygon_path_finder_demo/polygonpathfinder.gd b/demos/2d/polygon_path_finder_demo/polygonpathfinder.gd
new file mode 100644
index 00000000000..a0e71dd127c
--- /dev/null
+++ b/demos/2d/polygon_path_finder_demo/polygonpathfinder.gd
@@ -0,0 +1,80 @@
+
+extends Spatial
+
+func _ready():
+	var pf = PolygonPathFinder.new()
+	
+	var points = Vector2Array()
+	var connections = IntArray()
+	
+	# poly 1
+	points.push_back(Vector2(0, 0))		#0
+	points.push_back(Vector2(10, 0))	#1
+	points.push_back(Vector2(10, 10))	#2
+	points.push_back(Vector2(0, 10))	#3
+
+	connections.push_back(0) # connect vertex 0 ...
+	connections.push_back(1) # ... to 1
+	drawLine(points[0], points[1], get_node("/root/Spatial/Polys"))
+	connections.push_back(1) # connect vertex 1 ...
+	connections.push_back(2) # ... to 2
+	drawLine(points[1], points[2], get_node("/root/Spatial/Polys"))
+	connections.push_back(2) # etc.
+	connections.push_back(3)
+	drawLine(points[2], points[3], get_node("/root/Spatial/Polys"))
+	connections.push_back(3) # connect vertex 3 ...
+	connections.push_back(0) # back to vertex 0, to close the polygon
+	drawLine(points[3], points[0], get_node("/root/Spatial/Polys"))
+
+	# poly 2, as obstacle inside poly 1
+	points.push_back(Vector2(2, 0.5))	#4
+	points.push_back(Vector2(4, 0.5))	#5
+	points.push_back(Vector2(4, 9.5))	#6
+	points.push_back(Vector2(2, 9.5))	#7
+
+	connections.push_back(4)
+	connections.push_back(5)
+	drawLine(points[4], points[5], get_node("/root/Spatial/Polys"))
+	connections.push_back(5)
+	connections.push_back(6)
+	drawLine(points[5], points[6], get_node("/root/Spatial/Polys"))
+	connections.push_back(6)
+	connections.push_back(7)
+	drawLine(points[6], points[7], get_node("/root/Spatial/Polys"))
+	connections.push_back(7)
+	connections.push_back(4)
+	drawLine(points[7], points[4], get_node("/root/Spatial/Polys"))
+
+	
+	print("points: ",points)
+	print("connections: ",connections)
+	
+	pf.setup(points, connections)
+	
+	var path = pf.find_path(Vector2(1, 5), Vector2(8, 5))
+	
+	var lastStep = null
+	print("path: ",path)
+	for step in path:
+		print("step: ",step)
+		if (lastStep != null):
+			var currPathSegment = Vector2Array()
+			drawLine(lastStep, step, get_node("/root/Spatial/Path"))
+		lastStep = step
+		
+
+
+func drawLine(pointA, pointB, immediateGeo):
+	var drawPosY = 0.1
+	var im = immediateGeo
+	
+	im.begin(Mesh.PRIMITIVE_POINTS, null)
+	im.add_vertex(Vector3(pointA.x, drawPosY, pointA.y))
+	im.add_vertex(Vector3(pointB.x, drawPosY, pointB.y))
+	im.end()
+	im.begin(Mesh.PRIMITIVE_LINE_STRIP, null)
+	im.add_vertex(Vector3(pointA.x, drawPosY, pointA.y))
+	im.add_vertex(Vector3(pointB.x, drawPosY, pointB.y))
+	im.end()
+	
+