Module: Jolt::Native::QueryFunctions

Defined in:
lib/jolt/native/query_functions.rb

Class Method Summary collapse

Class Method Details

.attach(native) ⇒ Object 



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# File 'lib/jolt/native/query_functions.rb', line 8

def attach(native)
  install_object_layer_filter(native)
end

.body_collector ⇒ Object 



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# File 'lib/jolt/native/query_functions.rb', line 33

def body_collector
  hits = []
  callback = FFI::Function.new(:float, %i[pointer uint32]) do |_context, body_id|
    hits << body_id
    1.0
  end
  [callback, hits]
end

.install_object_layer_filter(native) ⇒ Object 



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# File 'lib/jolt/native/query_functions.rb', line 22

def install_object_layer_filter(native)
  @object_layer_callback ||= FFI::Function.new(:bool, %i[pointer uint32]) do |context, layer|
    count = context.read_uint32
    layer < count && context.get_uint8(layer + 4) == 1
  end
  @object_layer_procs ||= ObjectLayerFilterProcs.new.tap do |procs|
    procs[:should_collide] = @object_layer_callback
  end
  native.JPH_ObjectLayerFilter_SetProcs(@object_layer_procs.pointer)
end

.object_layer_filter(native, layer_ids, layer_count) ⇒ Object

Raises:



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# File 'lib/jolt/native/query_functions.rb', line 12

def object_layer_filter(native, layer_ids, layer_count)
  context = FFI::MemoryPointer.new(:uint8, layer_count + 4, true)
  context.write_uint32(layer_count)
  layer_ids.each { |id| context.put_uint8(id + 4, 1) }
  filter = native.JPH_ObjectLayerFilter_Create(context)
  raise InitializationError, "failed to create object layer filter" if filter.null?

  [filter, context]
end