1 files changed, 75 insertions, 0 deletions
diff --git a/scripts/level_gen.gd b/scripts/level_gen.gd
new file mode 100644
index 0000000..0e4cb21
--- /dev/null
+++ b/scripts/level_gen.gd
@@ -0,0 +1,75 @@
+extends Node3D
+
+@export var width: int = 16
+@export var height: int = 16
+@export var depth: int = 16
+
+var map_grid: Array[float] = []
+
+func map_grid_get(x: int, y: int, z: int):
+	return map_grid[z*height*width + y*width + x]
+
+func gen_map_grid():
+	map_grid.resize(width*height*depth)
+	for z in depth:
+		for y in height:
+			for x in width:
+				if y <= 5:
+					map_grid[z*height*width + y*width + x] = -1.0
+				else:
+					map_grid[z*height*width + y*width + x] = 0.0
+
+# Called when the node enters the scene tree for the first time.
+func _ready():
+	gen_map_grid()
+	var vertices = PackedVector3Array()
+	var triangles = PackedInt32Array()
+	# Initialize the ArrayMesh.
+	var arr_mesh = ArrayMesh.new()
+	var arrays = []
+	arrays.resize(Mesh.ARRAY_MAX)
+	arrays[Mesh.ARRAY_VERTEX] = vertices
+	arrays[Mesh.ARRAY_INDEX] = triangles
+	
+	var cell = MarchingCubes.Cell.new()
+	
+	for z in range(-1, depth):
+		for y in range(-1, height):
+			for x in range(-1, width):
+				var grid = [
+					[x, y, z],
+					[x + 1, y, z],
+					[x + 1, y + 1, z],
+					[x, y + 1, z],
+					[x, y, z + 1],
+					[x + 1, y, z + 1],
+					[x + 1, y + 1, z + 1],
+					[x, y + 1, z + 1],
+				]
+				for i in grid.size():
+					if grid[i][0] >= width or grid[i][1] >= height or grid[i][2] >= depth or \
+					   grid[i][0] < 0 or grid[i][1] < 0 or grid[i][2] < 0:
+						cell.value[i] = 0.0
+					else:
+						cell.value[i] = map_grid_get(grid[i][0], grid[i][1], grid[i][2])
+					cell.position[i] = Vector3(grid[i][0], grid[i][1], grid[i][2])
+				
+				MarchingCubes.march_cube(cell, triangles, vertices)
+			
+	# Create the Mesh.
+	arr_mesh.add_surface_from_arrays(Mesh.PRIMITIVE_TRIANGLES, arrays)
+	var m = MeshInstance3D.new()
+	m.mesh = arr_mesh
+	
+	var col_mesh = arr_mesh.create_trimesh_shape()
+	
+	var collision_shape = CollisionShape3D.new()
+	collision_shape.set_shape(col_mesh)
+	
+	m.add_child(collision_shape)
+	
+	add_child(m)
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+func _process(_delta):
+	pass