90 lines
2.2 KiB
GDScript
90 lines
2.2 KiB
GDScript
extends Node
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export(NodePath) var terrain_path = null
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export(Material) var cursor_material = null
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var _terrain = null
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var _cursor = null
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onready var _head = get_parent().get_node("Camera")
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func _ready():
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_terrain = get_node(terrain_path)
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_cursor = _make_cursor()
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_terrain.add_child(_cursor)
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func _fixed_process(delta):
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if _terrain == null:
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return
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var origin = _head.get_global_transform().origin
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var forward = -_head.get_transform().basis.z.normalized()
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var hit = _terrain.raycast(origin, forward, 10)
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var label = get_parent().get_node("debug_label")
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if hit != null:
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label.text = str(hit.position)
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_cursor.show()
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_cursor.set_translation(hit.position + Vector3(1,1,1)*0.5)
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else:
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label.text = "---"
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_cursor.hide()
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func _make_cursor():
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var st = SurfaceTool.new()
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st.begin(Mesh.PRIMITIVE_LINES)
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_add_wireframe_cube(st, -Vector3(1,1,1)*0.5, 1, Color(0,0,0))
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var mesh = st.commit()
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var mesh_instance = MeshInstance.new()
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mesh_instance.mesh = mesh
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if cursor_material != null:
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mesh_instance.material_override = cursor_material
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mesh_instance.set_scale(Vector3(1,1,1)*1.01)
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return mesh_instance
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static func _add_wireframe_cube(st, pos, step, color):
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st.add_color(color)
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st.add_vertex(pos)
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st.add_vertex(pos + Vector3(step, 0, 0))
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st.add_vertex(pos + Vector3(step, 0, 0))
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st.add_vertex(pos + Vector3(step, 0, step))
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st.add_vertex(pos + Vector3(step, 0, step))
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st.add_vertex(pos + Vector3(0, 0, step))
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st.add_vertex(pos + Vector3(0, 0, step))
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st.add_vertex(pos)
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st.add_vertex(pos + Vector3(0, step, 0))
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st.add_vertex(pos + Vector3(step, step, 0))
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st.add_vertex(pos + Vector3(step, step, 0))
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st.add_vertex(pos + Vector3(step, step, step))
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st.add_vertex(pos + Vector3(step, step, step))
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st.add_vertex(pos + Vector3(0, step, step))
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st.add_vertex(pos + Vector3(0, step, step))
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st.add_vertex(pos + Vector3(0, step, 0))
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st.add_vertex(pos)
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st.add_vertex(pos + Vector3(0, step, 0))
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st.add_vertex(pos + Vector3(step, 0, 0))
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st.add_vertex(pos + Vector3(step, step, 0))
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st.add_vertex(pos + Vector3(step, 0, step))
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st.add_vertex(pos + Vector3(step, step, step))
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st.add_vertex(pos + Vector3(0, 0, step))
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st.add_vertex(pos + Vector3(0, step, step))
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