87 lines
2.2 KiB
GDScript
87 lines
2.2 KiB
GDScript
extends RoomState
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const RoomState = preload("./room_state.gd")
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var room_height = 3
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var corner_count = 0
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func _on_enter():
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corner_count = room.wall_corners.get_child_count()
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if corner_count < 3:
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return
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room_height = room.get_corner(0).global_position.y
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room.wall_mesh.mesh = generate_mesh()
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if room.wall_mesh.mesh == null:
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return
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var collisions = generate_collision()
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for collision in collisions:
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var static_body = StaticBody3D.new()
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static_body.set_collision_layer_value(4, true)
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static_body.set_collision_layer_value(5, true)
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static_body.collision_mask = 0
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static_body.add_child(collision)
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room.wall_collisions.add_child(static_body)
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room.wall_mesh.visible = true
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func _on_leave():
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room.wall_mesh.mesh = null
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for collision in room.wall_collisions.get_children():
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collision.queue_free()
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func generate_mesh():
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var st = SurfaceTool.new()
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var wall_up = Vector3.UP * room_height
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st.begin(Mesh.PRIMITIVE_TRIANGLE_STRIP)
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for i in range(corner_count):
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var corner = room.get_corner(i)
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st.add_vertex(corner.position)
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st.add_vertex(corner.position + wall_up)
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var first_corner = room.get_corner(0)
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st.add_vertex(first_corner.position)
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st.add_vertex(first_corner.position + wall_up)
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st.index()
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st.generate_normals()
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st.generate_tangents()
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var mesh = st.commit()
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return mesh
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func generate_collision():
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var collision_shapes: Array[CollisionShape3D] = []
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for i in range(corner_count):
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var corner = room.get_corner(i)
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var next_corner = room.get_corner(i + 1)
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var shape = BoxShape3D.new()
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shape.size = Vector3((next_corner.position - corner.position).length(), room_height, 0.04)
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var transform = Transform3D()
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var back_vector = (corner.position - next_corner.position).cross(Vector3.UP).normalized() * shape.size.z / 2
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transform.basis = Basis((next_corner.position - corner.position).normalized(), Vector3.UP, back_vector.normalized())
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transform.origin = corner.position + (next_corner.position - corner.position) / 2 + back_vector + Vector3.UP * shape.size.y / 2
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var collision_shape = CollisionShape3D.new()
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collision_shape.shape = shape
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collision_shape.transform = transform
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collision_shapes.append(collision_shape)
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return collision_shapes
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