note
	description: "GAME_HAPTIC_EFFECT that play at a custom strength."
	author: "Louis Marchand"
	date: "Tue, 03 Mar 2015 14:16:22 +0000"
	revision: "2.0"

class 
	GAME_HAPTIC_CUSTOM_EFFECT

create 
	make

feature -- Initialization

	make
			-- Initialization of Current
		require -- from  MEMORY_STRUCTURE
			True
		do
			Precursor
			set_type ({GAME_SDL_EXTERNAL}.sdl_haptic_custom.as_natural_16)
			set_axes_count (1)
		ensure -- from MEMORY_STRUCTURE
			not_shared: not shared
		ensure then
			axes_number_valid: axes_count >= 1
			type_valid: type.to_natural_32 = {GAME_SDL_EXTERNAL}.sdl_haptic_custom
		end

	make_by_pointer (a_ptr: POINTER)
			-- Initialize current with a_ptr.
			-- (from MEMORY_STRUCTURE)
		require -- from MEMORY_STRUCTURE
			a_ptr_not_null: a_ptr /= default_pointer
		do
			internal_item := a_ptr
			managed_pointer := Void
			shared := True
		ensure -- from MEMORY_STRUCTURE
			shared: shared
		end
	
feature {NONE} -- Initialization

	default_create
			-- Process instances of classes with no creation clause.
			-- (Default: do nothing.)
			-- (from ANY)
		do
		end

	make_from_reference (v: POINTER_REF)
			-- Initialize Current with v.item.
			-- (from POINTER_REF)
		require -- from POINTER_REF
			v_not_void: v /= Void
		do
			set_item (v.item)
		ensure -- from POINTER_REF
			item_set: null = v.item
		end
	
feature -- Access

	axes_count: NATURAL_8 assign set_axes_number
			-- The number of axes to use
		require
			exists: exists
		do
			Result := {GAME_SDL_EXTERNAL}.get_sdl_haptic_custom_channels (specific_item)
		end

	axes_number: NATURAL_8 assign set_axes_number
		obsolete "Use `axes_count' instead"
			-- The number of axes to use
		require
			exists: exists
		do
			Result := {GAME_SDL_EXTERNAL}.get_sdl_haptic_custom_channels (specific_item)
		end

	delay: NATURAL_16 assign set_delay
			-- delay before starting Current (in millisecond)
		require -- from GAME_HAPTIC_EFFECT_DELAYED
			exists: exists
		do
			Result := {GAME_SDL_EXTERNAL}.get_sdl_haptic_custom_delay (specific_item)
		end

	direction: GAME_HAPTIC_DIRECTION assign set_direction
			-- The orientation that the force of Current come from
		require
			exists: exists
		do
			create Result.make_by_pointer ({GAME_SDL_EXTERNAL}.get_sdl_haptic_custom_direction (specific_item))
		end

	fade_in_length: NATURAL_16 assign set_fade_in_length
			-- length of the fade in
		require -- from GAME_HAPTIC_EFFECT_ENVELOPE
			exists: exists
		do
			Result := {GAME_SDL_EXTERNAL}.get_sdl_haptic_custom_attack_length (specific_item)
		end

	fade_in_level: NATURAL_16 assign set_fade_in_level
			-- level at the start of the fade in
		require -- from GAME_HAPTIC_EFFECT_ENVELOPE
			exists: exists
		do
			Result := {GAME_SDL_EXTERNAL}.get_sdl_haptic_custom_attack_level (specific_item)
		end

	fade_out_length: NATURAL_16 assign set_fade_out_length
			-- length of the fade out
		require -- from GAME_HAPTIC_EFFECT_ENVELOPE
			exists: exists
		do
			Result := {GAME_SDL_EXTERNAL}.get_sdl_haptic_custom_fade_length (specific_item)
		end

	fade_out_level: NATURAL_16 assign set_fade_out_level
			-- level at the start of the fade out
		require -- from GAME_HAPTIC_EFFECT_ENVELOPE
			exists: exists
		do
			Result := {GAME_SDL_EXTERNAL}.get_sdl_haptic_custom_fade_level (specific_item)
		end

	generating_type: TYPE [detachable GAME_HAPTIC_CUSTOM_EFFECT]
			-- Type of current object
			-- (type of which it is a direct instance)
			-- (from ANY)
		external
			"built_in"
		ensure -- from ANY
			generating_type_not_void: Result /= Void
		end

	generator: STRING_8
			-- Name of current object's generating class
			-- (base class of the type of which it is a direct instance)
			-- (from ANY)
		external
			"built_in"
		ensure -- from ANY
			generator_not_void: Result /= Void
			generator_not_empty: not Result.is_empty
		end

	hash_code: INTEGER_32
			-- Hash code value
			-- (from POINTER_REF)
		do
			Result := null.hash_code
		ensure -- from HASHABLE
			good_hash_value: Result >= 0
		end

	interval: NATURAL_16 assign set_interval
			-- how soon before effect can be triggered again (in millisecond)
		require -- from GAME_HAPTIC_EFFECT_DELAYED
			exists: exists
		do
			Result := {GAME_SDL_EXTERNAL}.get_sdl_haptic_custom_interval (specific_item)
		end

	is_infinite: BOOLEAN
			-- It True, Current will never stop by itself when started
			-- (from GAME_HAPTIC_EFFECT_INFINITE_LENGTH)
		require -- from GAME_HAPTIC_EFFECT_INFINITE_LENGTH
			exists: exists
		do
			Result := length = {GAME_SDL_EXTERNAL}.sdl_haptic_infinity
		end

	null: POINTER
			-- Pointer value
			-- (from POINTER_REF)


	item: POINTER
			-- Access to memory area.
			-- (from MEMORY_STRUCTURE)
		local
			m: like managed_pointer
		do
			if shared then
				Result := internal_item
			else
				m := managed_pointer
				if m /= Void then
					Result := m.item
				end
			end
		end

	length: NATURAL_32 assign set_length
			-- Duration of Current (in millisecond)
		require -- from GAME_HAPTIC_EFFECT
			exists: exists
		do
			Result := {GAME_SDL_EXTERNAL}.get_sdl_haptic_custom_length (specific_item)
		end

	period: NATURAL_16 assign set_period
			-- Time (in millisecond) between two samples.
		require
			exists: exists
		do
			Result := {GAME_SDL_EXTERNAL}.get_sdl_haptic_custom_period (specific_item)
		end

	samples: ARRAYED_LIST [NATURAL_16] assign set_samples
			-- Value sequence to play Current
		require
			exists: exists
		local
			l_managed_pointer: MANAGED_POINTER
			l_samples_ptr: POINTER
			l_count, l_byte_count, i: INTEGER_32
		do
			l_samples_ptr := {GAME_SDL_EXTERNAL}.get_sdl_haptic_custom_data (specific_item)
			l_count := axes_count.to_natural_16 * {GAME_SDL_EXTERNAL}.get_sdl_haptic_custom_samples (specific_item).to_integer_32
			l_byte_count := l_count * Natural_16_bytes
			create Result.make (l_count)
			create l_managed_pointer.make_from_pointer (l_samples_ptr, l_byte_count)
			from
				i := 0
			until
				i >= l_byte_count
			loop
				Result.extend (l_managed_pointer.read_natural_16 (i))
				i := i + Natural_16_bytes
			end
		end

	set_axes_count (a_count: NATURAL_8)
			-- Assign axes_count with the value of a_count
			-- Note: Callig this routine will clear the samples (to satisfied invariant)
		require
			exists: exists
			number_valid: a_count >= 1
		do
			{GAME_SDL_EXTERNAL}.set_sdl_haptic_custom_channels (specific_item, a_count)
			set_samples (create {ARRAYED_LIST [NATURAL_16]}.make (0))
		ensure
			is_assign: axes_count = a_count
			samples_valid_for_every_axes: samples.count.divisible (axes_count.to_integer_32)
		end

	set_axes_number (a_number: NATURAL_8)
		obsolete "Use `set_axes_count' instead"
			-- Assign axes_number with the value of a_number
			-- Note: Callig this routine will clear the samples (to satisfied invariant)
		require
			exists: exists
			number_valid: a_number >= 1
		do
			{GAME_SDL_EXTERNAL}.set_sdl_haptic_custom_channels (specific_item, a_number)
			set_samples (create {ARRAYED_LIST [NATURAL_16]}.make (0))
		ensure
			is_assign: axes_number = a_number
			samples_valid_for_every_axes: samples.count.divisible (axes_number.to_integer_32)
		end

	set_delay (a_delay: NATURAL_16)
			-- Assign delay with the value of a_delay
		require -- from GAME_HAPTIC_EFFECT_DELAYED
			exists: exists
			delay_valid: a_delay <= 32767
		do
			{GAME_SDL_EXTERNAL}.set_sdl_haptic_custom_delay (specific_item, a_delay)
		ensure -- from GAME_HAPTIC_EFFECT_DELAYED
			is_assign: delay = a_delay
		end

	set_direction (a_direction: GAME_HAPTIC_DIRECTION)
			-- assign direction with the values of a_direction
		require
			exists: exists
		do
			direction.copy (a_direction)
		ensure
			is_assign: direction ~ a_direction
		end

	set_fade_in_length (a_fade_in_length: NATURAL_16)
			-- Assign fade_in_length with the value of a_fade_in_length
		require -- from GAME_HAPTIC_EFFECT_ENVELOPE
			exists: exists
			length_valid: a_fade_in_length <= 32767
		do
			{GAME_SDL_EXTERNAL}.set_sdl_haptic_custom_attack_length (specific_item, a_fade_in_length)
		ensure -- from GAME_HAPTIC_EFFECT_ENVELOPE
			is_assign: fade_in_length = a_fade_in_length
		end

	set_fade_in_level (a_fade_in_level: NATURAL_16)
			-- Assign fade_in_level with the value of a_fade_in_level
		require -- from GAME_HAPTIC_EFFECT_ENVELOPE
			exists: exists
			level_valid: a_fade_in_level <= 32767
		do
			{GAME_SDL_EXTERNAL}.set_sdl_haptic_custom_attack_level (specific_item, a_fade_in_level)
		ensure -- from GAME_HAPTIC_EFFECT_ENVELOPE
			is_assign: fade_in_level = a_fade_in_level
		end

	set_fade_out_length (a_fade_out_length: NATURAL_16)
			-- Assign fade_out_length with the value of a_fade_out_length
		require -- from GAME_HAPTIC_EFFECT_ENVELOPE
			exists: exists
			length_valid: a_fade_out_length <= 32767
		do
			{GAME_SDL_EXTERNAL}.set_sdl_haptic_custom_fade_length (specific_item, a_fade_out_length)
		ensure -- from GAME_HAPTIC_EFFECT_ENVELOPE
			is_assign: fade_out_length = a_fade_out_length
		end

	set_fade_out_level (a_fade_out_level: NATURAL_16)
			-- Assign fade_out_level with the value of a_fade_out_level
		require -- from GAME_HAPTIC_EFFECT_ENVELOPE
			exists: exists
			level_valid: a_fade_out_level <= 32767
		do
			{GAME_SDL_EXTERNAL}.set_sdl_haptic_custom_fade_level (specific_item, a_fade_out_level)
		ensure -- from GAME_HAPTIC_EFFECT_ENVELOPE
			is_assign: fade_out_level = a_fade_out_level
		end

	set_infinite
			-- When played, Current will never stop by itself
			-- (from GAME_HAPTIC_EFFECT_INFINITE_LENGTH)
		require -- from GAME_HAPTIC_EFFECT_INFINITE_LENGTH
			exists: exists
		do
			set_length ({GAME_SDL_EXTERNAL}.sdl_haptic_infinity)
		ensure -- from GAME_HAPTIC_EFFECT_INFINITE_LENGTH
			infinite_is_set: is_infinite
		end

	set_interval (a_interval: NATURAL_16)
			-- Assign interval with the value of a_interval
		require -- from GAME_HAPTIC_EFFECT_DELAYED
			exists: exists
			interval_valid: a_interval <= 32767
		do
			{GAME_SDL_EXTERNAL}.set_sdl_haptic_custom_interval (specific_item, a_interval)
		ensure -- from GAME_HAPTIC_EFFECT_DELAYED
			is_assign: interval = a_interval
		end

	set_length (a_length: NATURAL_32)
			-- Assign length with the value of a_length
		require -- from GAME_HAPTIC_EFFECT
			exists: exists
			length_valid: a_length <= 32767
		require else -- from GAME_HAPTIC_EFFECT_INFINITE_LENGTH
			exists: exists
			length_valid: a_length <= 32767 or a_length = {GAME_SDL_EXTERNAL}.sdl_haptic_infinity
		do
			{GAME_SDL_EXTERNAL}.set_sdl_haptic_custom_length (specific_item, a_length)
		ensure -- from GAME_HAPTIC_EFFECT
			is_assign: length = a_length
		end

	set_period (a_period: NATURAL_16)
			-- Assign period with the value of a_period
		require
			exists: exists
			period_valid: a_period <= 32767
		do
			{GAME_SDL_EXTERNAL}.set_sdl_haptic_custom_period (specific_item, a_period)
		ensure
			is_assign: period = a_period
		end

	set_samples (a_samples: ARRAYED_LIST [NATURAL_16])
			-- Assign samples with the values in a_samples
		require
			exists: exists
			samples_for_all_axes: a_samples.count.divisible (axes_count.to_integer_32)
		local
			l_pointer: POINTER
			l_array: ARRAY [NATURAL_16]
			l_count, l_byte_count: INTEGER_32
		do
			l_count := axes_count.to_natural_16 * {GAME_SDL_EXTERNAL}.get_sdl_haptic_custom_samples (specific_item).to_integer_32
			l_byte_count := l_count * Natural_16_bytes
			l_array := a_samples.to_array
			l_pointer := {GAME_SDL_EXTERNAL}.get_sdl_haptic_custom_data (specific_item)
			if not l_pointer.is_default_pointer then
				l_pointer.memory_free
			end
			l_pointer := l_pointer.memory_alloc (l_byte_count)
			c_memcpy ($l_array.to_pointer, l_pointer, l_byte_count)
			{GAME_SDL_EXTERNAL}.set_sdl_haptic_custom_data (specific_item, l_pointer)
		ensure
			is_assign: samples ~ a_samples
			samples_valid_for_every_axes: samples.count.divisible (axes_count.to_integer_32)
		end

	shared: BOOLEAN
			-- Is current memory area shared with others?
			-- (from MEMORY_STRUCTURE)
	
feature -- Comparison

	frozen deep_equal (a: detachable ANY; b: like arg #1): BOOLEAN
			-- Are a and b either both void
			-- or attached to isomorphic object structures?
			-- (from ANY)
		do
			if a = Void then
				Result := b = Void
			else
				Result := b /= Void and then a.is_deep_equal (b)
			end
		ensure -- from ANY
			instance_free: class
			shallow_implies_deep: standard_equal (a, b) implies Result
			both_or_none_void: (a = Void) implies (Result = (b = Void))
			same_type: (Result and (a /= Void)) implies (b /= Void and then a.same_type (b))
			symmetric: Result implies deep_equal (b, a)
		end

	frozen equal (a: detachable ANY; b: like arg #1): BOOLEAN
			-- Are a and b either both void or attached
			-- to objects considered equal?
			-- (from ANY)
		do
			if a = Void then
				Result := b = Void
			else
				Result := b /= Void and then a.is_equal (b)
			end
		ensure -- from ANY
			instance_free: class
			definition: Result = (a = Void and b = Void) or else ((a /= Void and b /= Void) and then a.is_equal (b))
		end

	frozen is_deep_equal alias "≡≡≡" (other: GAME_HAPTIC_CUSTOM_EFFECT): BOOLEAN
			-- Are Current and other attached to isomorphic object structures?
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
		external
			"built_in"
		ensure -- from ANY
			shallow_implies_deep: standard_is_equal (other) implies Result
			same_type: Result implies same_type (other)
			symmetric: Result implies other.is_deep_equal (Current)
		end

	is_equal (other: GAME_HAPTIC_CUSTOM_EFFECT): BOOLEAN
			-- Is other attached to an object considered
			-- equal to current object?
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
		external
			"built_in"
		ensure -- from ANY
			symmetric: Result implies other ~ Current
			consistent: standard_is_equal (other) implies Result
		end

	memory_compare (other: POINTER; a_size: INTEGER_32): BOOLEAN
			-- True if Current and other are identical on a_size bytes.
			-- (from POINTER_REF)
		require -- from POINTER_REF
			valid_size: a_size > 0
			valid_other: other /= default_pointer
		do
			Result := c_memcmp (null, other, a_size) = 0
		end

	frozen standard_equal (a: detachable ANY; b: like arg #1): BOOLEAN
			-- Are a and b either both void or attached to
			-- field-by-field identical objects of the same type?
			-- Always uses default object comparison criterion.
			-- (from ANY)
		do
			if a = Void then
				Result := b = Void
			else
				Result := b /= Void and then a.standard_is_equal (b)
			end
		ensure -- from ANY
			instance_free: class
			definition: Result = (a = Void and b = Void) or else ((a /= Void and b /= Void) and then a.standard_is_equal (b))
		end

	frozen standard_is_equal alias "≜" (other: GAME_HAPTIC_CUSTOM_EFFECT): BOOLEAN
			-- Is other attached to an object of the same type
			-- as current object, and field-by-field identical to it?
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
		external
			"built_in"
		ensure -- from ANY
			same_type: Result implies same_type (other)
			symmetric: Result implies other.standard_is_equal (Current)
		end
	
feature -- Status report

	conforms_to (other: ANY): BOOLEAN
			-- Does type of current object conform to type
			-- of other (as per Eiffel: The Language, chapter 13)?
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
		external
			"built_in"
		end

	exists: BOOLEAN
			-- Is allocated memory still allocated?
			-- (from MEMORY_STRUCTURE)
		do
			Result := item /= default_pointer
		end

	is_default_pointer: BOOLEAN
			-- Is current default_pointer?
			-- (from POINTER_REF)
		do
			Result := null = default_pointer
		ensure -- from POINTER_REF
			definition: Result = (null = default_pointer)
		end

	is_hashable: BOOLEAN
			-- May current object be hashed?
			-- (True if it is not its type's default.)
			-- (from POINTER_REF)
		do
			Result := null /= default_pointer
		end

	same_type (other: ANY): BOOLEAN
			-- Is type of current object identical to type of other?
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
		external
			"built_in"
		ensure -- from ANY
			definition: Result = (conforms_to (other) and other.conforms_to (Current))
		end
	
feature {NONE} -- Status report

	is_in_final_collect: BOOLEAN
			-- Is GC currently performing final collection
			-- after execution of current program?
			-- Safe to use in dispose.
			-- (from DISPOSABLE)
		external
			"C inline use %"eif_memory.h%""
		alias
			"return eif_is_in_final_collect;"
		end
	
feature -- Element change

	frozen set_item (p: POINTER)
			-- Make p the item value.
			-- (from POINTER_REF)
		do
			null := p
		end
	
feature -- Conversion

	to_integer_32: INTEGER_32
			-- Convert item into an INTEGER_32 value.
			-- (from POINTER_REF)
		do
			fixme (once "Do not forget to add proper precondition to ensure we can convert pointer value into an INTEGER_32")
			Result := null.to_integer_32
		end

	to_reference: POINTER_REF
			-- Associated reference of Current
			-- (from POINTER_REF)
		do
			create Result;
			Result.set_item (null)
		ensure -- from POINTER_REF
			to_reference_not_void: Result /= Void
		end
	
feature -- Duplication

	frozen clone (other: detachable ANY): like other
		obsolete "Use `twin' instead. [2017-05-31]"
			-- Void if other is void; otherwise new object
			-- equal to other
			--
			-- For non-void other, clone calls copy;
			-- to change copying/cloning semantics, redefine copy.
			-- (from ANY)
		do
			if other /= Void then
				Result := other.twin
			end
		ensure -- from ANY
			instance_free: class
			equal: Result ~ other
		end

	copy (other: GAME_HAPTIC_CUSTOM_EFFECT)
			-- Update current object using fields of object attached
			-- to other, so as to yield equal objects.
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
			type_identity: same_type (other)
		external
			"built_in"
		ensure -- from ANY
			is_equal: Current ~ other
		end

	frozen deep_clone (other: detachable ANY): like other
		obsolete "Use `deep_twin' instead. [2017-05-31]"
			-- Void if other is void: otherwise, new object structure
			-- recursively duplicated from the one attached to other
			-- (from ANY)
		do
			if other /= Void then
				Result := other.deep_twin
			end
		ensure -- from ANY
			instance_free: class
			deep_equal: deep_equal (other, Result)
		end

	frozen deep_copy (other: GAME_HAPTIC_CUSTOM_EFFECT)
			-- Effect equivalent to that of:
			--		copy (other . deep_twin)
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
		do
			copy (other.deep_twin)
		ensure -- from ANY
			deep_equal: deep_equal (Current, other)
		end

	frozen deep_twin: GAME_HAPTIC_CUSTOM_EFFECT
			-- New object structure recursively duplicated from Current.
			-- (from ANY)
		external
			"built_in"
		ensure -- from ANY
			deep_twin_not_void: Result /= Void
			deep_equal: deep_equal (Current, Result)
		end

	frozen standard_clone (other: detachable ANY): like other
		obsolete "Use `standard_twin' instead. [2017-05-31]"
			-- Void if other is void; otherwise new object
			-- field-by-field identical to other.
			-- Always uses default copying semantics.
			-- (from ANY)
		do
			if other /= Void then
				Result := other.standard_twin
			end
		ensure -- from ANY
			instance_free: class
			equal: standard_equal (Result, other)
		end

	frozen standard_copy (other: GAME_HAPTIC_CUSTOM_EFFECT)
			-- Copy every field of other onto corresponding field
			-- of current object.
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
			type_identity: same_type (other)
		external
			"built_in"
		ensure -- from ANY
			is_standard_equal: standard_is_equal (other)
		end

	frozen standard_twin: GAME_HAPTIC_CUSTOM_EFFECT
			-- New object field-by-field identical to other.
			-- Always uses default copying semantics.
			-- (from ANY)
		external
			"built_in"
		ensure -- from ANY
			standard_twin_not_void: Result /= Void
			equal: standard_equal (Result, Current)
		end

	frozen twin: GAME_HAPTIC_CUSTOM_EFFECT
			-- New object equal to Current
			-- twin calls copy; to change copying/twinning semantics, redefine copy.
			-- (from ANY)
		external
			"built_in"
		ensure -- from ANY
			twin_not_void: Result /= Void
			is_equal: Result ~ Current
		end
	
feature -- Basic operations

	frozen as_attached: attached GAME_HAPTIC_CUSTOM_EFFECT
		obsolete "Remove calls to this feature. [2017-05-31]"
			-- Attached version of Current.
			-- (Can be used during transitional period to convert
			-- non-void-safe classes to void-safe ones.)
			-- (from ANY)
		do
			Result := Current
		end

	frozen default: detachable GAME_HAPTIC_CUSTOM_EFFECT
			-- Default value of object's type
			-- (from ANY)
		do
		end

	frozen default_pointer: POINTER
			-- Default value of type POINTER
			-- (Avoid the need to write p.default for
			-- some p of type POINTER.)
			-- (from ANY)
		do
		ensure -- from ANY
			instance_free: class
		end

	default_rescue
			-- Process exception for routines with no Rescue clause.
			-- (Default: do nothing.)
			-- (from ANY)
		do
		end

	frozen do_nothing
			-- Execute a null action.
			-- (from ANY)
		do
		ensure -- from ANY
			instance_free: class
		end
	
feature {NONE} -- Implementation

	c_calloc (nmemb, size: INTEGER_32): POINTER
			-- C calloc
			-- (from POINTER_REF)
		external
			"C signature (size_t, size_t): EIF_POINTER use <stdlib.h>"
		alias
			"calloc"
		end

	c_free (p: POINTER)
			-- C free
			-- (from POINTER_REF)
		external
			"C signature (void *) use <stdlib.h>"
		alias
			"free"
		end

	c_malloc (size: INTEGER_32): POINTER
			-- C malloc
			-- (from POINTER_REF)
		external
			"C signature (size_t): EIF_POINTER use <stdlib.h>"
		alias
			"malloc"
		end

	c_memcmp (source, other: POINTER; count: INTEGER_32): INTEGER_32
			-- C memcmp
			-- (from POINTER_REF)
		external
			"C signature (void *, void *, size_t): EIF_INTEGER use <string.h>"
		alias
			"memcmp"
		end

	c_memcpy (destination, source: POINTER; count: INTEGER_32)
			-- C memcpy
			-- (from POINTER_REF)
		external
			"C signature (void *, const void *, size_t) use <string.h>"
		alias
			"memcpy"
		end

	c_memmove (destination, source: POINTER; count: INTEGER_32)
			-- C memmove
			-- (from POINTER_REF)
		external
			"C signature (void *, const void *, size_t) use <string.h>"
		alias
			"memmove"
		end

	c_memset (source: POINTER; val: INTEGER_32; count: INTEGER_32)
			-- C memset
			-- (from POINTER_REF)
		external
			"C signature (void *, int, size_t) use <string.h>"
		alias
			"memset"
		end

	c_realloc (source: POINTER; size: INTEGER_32): POINTER
			-- C realloc
			-- (from POINTER_REF)
		external
			"C signature (void *, size_t): EIF_POINTER use <stdlib.h>"
		alias
			"realloc"
		end

	internal_item: POINTER
			-- Pointer holding value when shared.
			-- (from MEMORY_STRUCTURE)

	managed_pointer: detachable MANAGED_POINTER
			-- Hold memory area in a managed way.
			-- (from MEMORY_STRUCTURE)

	set_type (a_type: NATURAL_16)
			-- Assign type with the value of a_type
			-- (from GAME_HAPTIC_EFFECT)
		require -- from GAME_HAPTIC_EFFECT
			exists: exists
		do
			{GAME_SDL_EXTERNAL}.set_sdl_haptic_effect_type (item, a_type)
		ensure -- from GAME_HAPTIC_EFFECT
			is_assign: type = a_type
		end

	specific_item: POINTER
			-- Internal pointer that is specific to a certain type of Current
			-- Note that item only point to a C union.
		require -- from GAME_HAPTIC_EFFECT
			exists: exists
		do
			Result := {GAME_SDL_EXTERNAL}.get_sdl_haptic_effect_custom (item)
		ensure -- from GAME_HAPTIC_EFFECT
			result_not_null: not Result.is_default_pointer
		end

	type: NATURAL_16 assign set_type
			-- Internal type of Current
			-- (from GAME_HAPTIC_EFFECT)
		require -- from GAME_HAPTIC_EFFECT
			exists: exists
		do
			Result := {GAME_SDL_EXTERNAL}.get_sdl_haptic_effect_type (item)
		end
	
feature -- Implementation

	dispose
			-- Action to be executed just before garbage collection
			-- reclaims an object.
			-- Effect it in descendants to perform specific dispose
			-- actions. Those actions should only take care of freeing
			-- external resources; they should not perform remote calls
			-- on other objects since these may also be dead and reclaimed.
		local
			l_samples_pointer: POINTER
		do
			l_samples_pointer := {GAME_SDL_EXTERNAL}.get_sdl_haptic_custom_data (specific_item)
			if not l_samples_pointer.is_default_pointer then
				l_samples_pointer.memory_free
				{GAME_SDL_EXTERNAL}.set_sdl_haptic_custom_data (specific_item, null)
			end
		end

	structure_size: INTEGER_32
			-- Size to allocate (in bytes).
			-- (from GAME_HAPTIC_EFFECT)
		do
			Result := {GAME_SDL_EXTERNAL}.c_sizeof_sdl_haptic_effect
		ensure -- from MEMORY_STRUCTURE
			is_class: class
			positive_result: Result > 0
		end
	
feature -- Access bits size

	boolean_bits: INTEGER_32
			-- Number of bits in a value of type BOOLEAN
			-- (from PLATFORM)
		do
			Result := boolean_bytes * 8
		ensure -- from PLATFORM
			instance_free: class
		end

	Character_32_bits: INTEGER_32 = 32
			-- Number of bits in a value of type CHARACTER_32
			-- (from PLATFORM)

	Character_8_bits: INTEGER_32 = 8
			-- Number of bits in a value of type CHARACTER_8
			-- (from PLATFORM)

	Integer_16_bits: INTEGER_32 = 16
			-- Number of bits in a value of type INTEGER_16
			-- (from PLATFORM)

	Integer_32_bits: INTEGER_32 = 32
			-- Number of bits in a value of type INTEGER_32
			-- (from PLATFORM)

	Integer_64_bits: INTEGER_32 = 64
			-- Number of bits in a value of type INTEGER_64
			-- (from PLATFORM)

	Integer_8_bits: INTEGER_32 = 8
			-- Number of bits in a value of type INTEGER_8
			-- (from PLATFORM)

	Natural_16_bits: INTEGER_32 = 16
			-- Number of bits in a value of type NATURAL_16
			-- (from PLATFORM)

	Natural_32_bits: INTEGER_32 = 32
			-- Number of bits in a value of type NATURAL_32
			-- (from PLATFORM)

	Natural_64_bits: INTEGER_32 = 64
			-- Number of bits in a value of type NATURAL_64
			-- (from PLATFORM)

	Natural_8_bits: INTEGER_32 = 8
			-- Number of bits in a value of type NATURAL_8
			-- (from PLATFORM)

	pointer_bits: INTEGER_32
			-- Number of bits in a value of type POINTER
			-- (from PLATFORM)
		do
			Result := pointer_bytes * 8
		ensure -- from PLATFORM
			instance_free: class
		end

	Real_32_bits: INTEGER_32 = 32
			-- Number of bits in a value of type REAL_32
			-- (from PLATFORM)

	Real_64_bits: INTEGER_32 = 64
			-- Number of bits in a value of type REAL_64
			-- (from PLATFORM)
	
feature -- Access bytes size

	boolean_bytes: INTEGER_32
			-- Number of bytes in a value of type BOOLEAN
			-- (from PLATFORM)
		external
			"built_in static"
		ensure -- from PLATFORM
			instance_free: class
		end

	Character_32_bytes: INTEGER_32 = 4
			-- Number of bytes in a value of type CHARACTER_32
			-- (from PLATFORM)

	Character_8_bytes: INTEGER_32 = 1
			-- Number of bytes in a value of type CHARACTER_8
			-- (from PLATFORM)

	Integer_16_bytes: INTEGER_32 = 2
			-- Number of bytes in a value of type INTEGER_16
			-- (from PLATFORM)

	Integer_32_bytes: INTEGER_32 = 4
			-- Number of bytes in a value of type INTEGER_32
			-- (from PLATFORM)

	Integer_64_bytes: INTEGER_32 = 8
			-- Number of bytes in a value of type INTEGER_64
			-- (from PLATFORM)

	Integer_8_bytes: INTEGER_32 = 1
			-- Number of bytes in a value of type INTEGER_8
			-- (from PLATFORM)

	Natural_16_bytes: INTEGER_32 = 2
			-- Number of bytes in a value of type NATURAL_16
			-- (from PLATFORM)

	Natural_32_bytes: INTEGER_32 = 4
			-- Number of bytes in a value of type NATURAL_32
			-- (from PLATFORM)

	Natural_64_bytes: INTEGER_32 = 8
			-- Number of bytes in a value of type NATURAL_64
			-- (from PLATFORM)

	Natural_8_bytes: INTEGER_32 = 1
			-- Number of bytes in a value of type NATURAL_8
			-- (from PLATFORM)

	pointer_bytes: INTEGER_32
			-- Number of bytes in a value of type POINTER
			-- (from PLATFORM)
		external
			"built_in static"
		ensure -- from PLATFORM
			instance_free: class
		end

	Real_32_bytes: INTEGER_32 = 4
			-- Number of bytes in a value of type REAL_32
			-- (from PLATFORM)

	Real_64_bytes: INTEGER_32 = 8
			-- Number of bytes in a value of type REAL_64
			-- (from PLATFORM)
	
feature -- Allocation/free

	memory_alloc (a_size: INTEGER_32): POINTER
			-- Allocated size bytes using malloc.
			-- (from POINTER_REF)
		require -- from POINTER_REF
			valid_size: a_size > 0
		do
			Result := c_malloc (a_size)
		ensure -- from POINTER_REF
			instance_free: class
		end

	memory_calloc (a_count, a_element_size: INTEGER_32): POINTER
			-- Allocate a_count elements of size a_element_size bytes using `calloc.
			-- (from POINTER_REF)
		require -- from POINTER_REF
			valid_element_count: a_count > 0
			valid_element_size: a_element_size > 0
		do
			Result := c_calloc (a_count, a_element_size)
		ensure -- from POINTER_REF
			instance_free: class
		end

	memory_free
			-- Free allocated memory with malloc.
			-- (from POINTER_REF)
		do
			c_free (null)
			set_item (default_pointer)
		end

	memory_realloc (a_size: INTEGER_32): POINTER
			-- Realloc Current.
			-- (from POINTER_REF)
		require -- from POINTER_REF
			valid_size: a_size >= 0
		do
			Result := c_realloc (null, a_size)
		end
	
feature -- Markers

	fixme (comment: READABLE_STRING_8)
			-- Mark code that has to be "fixed" with comment.
			-- (from REFACTORING_HELPER)
		require -- from REFACTORING_HELPER
			comment_not_void: comment /= Void
		do
			debug ("refactor_fixme")
				Io.Error.put_string ("FIXME: ");
				Io.Error.put_string (comment);
				Io.Error.put_new_line
			end
		ensure -- from REFACTORING_HELPER
			instance_free: class
		end

	to_implement (comment: READABLE_STRING_8)
			-- Mark code that has to be "implemented" with comment.
			-- (from REFACTORING_HELPER)
		require -- from REFACTORING_HELPER
			comment_not_void: comment /= Void
		do
			debug ("refactor_fixme")
				Io.Error.put_string ("TO_BE_IMPLEMENTED: ");
				Io.Error.put_string (comment);
				Io.Error.put_new_line
			end
		ensure -- from REFACTORING_HELPER
			instance_free: class
		end

	to_implement_assertion (comment: READABLE_STRING_8): BOOLEAN
			-- Mark assertion that has to be "implemented" with comment.
			-- (from REFACTORING_HELPER)
		require -- from REFACTORING_HELPER
			comment_not_void: comment /= Void
		do
			debug ("refactor_fixme")
				Io.Error.put_string ("ASSERTION_TO_BE_IMPLEMENTED: ");
				Io.Error.put_string (comment);
				Io.Error.put_new_line
			end
			Result := True
		ensure -- from REFACTORING_HELPER
			instance_free: class
		end
	
feature -- Memory copy

	memory_copy (a_source: POINTER; a_size: INTEGER_32)
			-- Copy a_size bytes from a_source to Current.
			-- a_source and Current should not overlap.
			-- (from POINTER_REF)
		require -- from POINTER_REF
			valid_size: a_size >= 0
			valid_source: a_source /= default_pointer
		do
			c_memcpy (null, a_source, a_size)
		end

	memory_move (a_source: POINTER; a_size: INTEGER_32)
			-- Copy a_size bytes from a_source to Current.
			-- a_source and Current can overlap.
			-- (from POINTER_REF)
		require -- from POINTER_REF
			valid_size: a_size >= 0
			valid_source: a_source /= default_pointer
		do
			c_memmove (null, a_source, a_size)
		end

	memory_set (val, n: INTEGER_32)
			-- Fill first n bytes of the memory pointed by Current
			-- with constant val.
			-- (from POINTER_REF)
		require -- from POINTER_REF
			valid_val: val >= 0
			valid_n: n >= 0
		do
			c_memset (null, val, n)
		end
	
feature -- Obsoletes

	character_bits: INTEGER_32
		obsolete "Use `character_8_bits' instead. [2017-05-31]"
			-- Number of bits in a value of type CHARACTER_8
			-- (from PLATFORM)
		do
			Result := 8
		ensure -- from PLATFORM
			instance_free: class
		end

	character_bytes: INTEGER_32
		obsolete "Use `character_8_bytes' instead. [2017-05-31]"
			-- Number of bytes in a value of type CHARACTER_8
			-- (from PLATFORM)
		external
			"built_in static"
		ensure -- from PLATFORM
			instance_free: class
		end

	double_bits: INTEGER_32
		obsolete "Use `real_64_bits' instead. [2017-05-31]"
			-- Number of bits in a value of type REAL_64
			-- (from PLATFORM)
		do
			Result := 64
		ensure -- from PLATFORM
			instance_free: class
		end

	double_bytes: INTEGER_32
		obsolete "Use `real_64_bytes' instead. [2017-05-31]"
			-- Number of bytes in a value of type REAL_64
			-- (from PLATFORM)
		external
			"built_in static"
		ensure -- from PLATFORM
			instance_free: class
		end

	integer_bits: INTEGER_32
		obsolete "Use `integer_32_bits' instead. [2017-05-31]"
			-- Number of bits in a value of type INTEGER_32
			-- (from PLATFORM)
		do
			Result := 32
		ensure -- from PLATFORM
			instance_free: class
		end

	integer_bytes: INTEGER_32
		obsolete "Use `integer_32_bytes' instead. [2017-05-31]"
			-- Number of bytes in a value of type INTEGER_32
			-- (from PLATFORM)
		external
			"built_in static"
		ensure -- from PLATFORM
			instance_free: class
		end

	maximum_character_code: INTEGER_32
		obsolete "Use `{CHARACTER_8}.max_value' instead. [2017-05-31]"
			-- Largest supported code for CHARACTER_8 values
			-- (from PLATFORM)
		do
			Result := {CHARACTER_8}.max_value
		ensure -- from PLATFORM
			instance_free: class
			meaningful: Result >= 127
		end

	maximum_integer: INTEGER_32
		obsolete "Use `{INTEGER}.max_value' instead. [2017-05-31]"
			-- Largest supported value of type INTEGER_32
			-- (from PLATFORM)
		do
			Result := {INTEGER_32}.max_value
		ensure -- from PLATFORM
			instance_free: class
			meaningful: Result >= 0
		end

	minimum_character_code: INTEGER_32
		obsolete "Use `{CHARACTER_8}.min_value' instead. [2017-05-31]"
			-- Smallest supported code for CHARACTER_8 values
			-- (from PLATFORM)
		do
			Result := {CHARACTER_8}.min_value
		ensure -- from PLATFORM
			instance_free: class
			meaningful: Result <= 0
		end

	minimum_integer: INTEGER_32
		obsolete "Use `{INTEGER}.min_value' instead. [2017-05-31]"
			-- Smallest supported value of type INTEGER_32
			-- (from PLATFORM)
		do
			Result := {INTEGER_32}.min_value
		ensure -- from PLATFORM
			instance_free: class
			meaningful: Result <= 0
		end

	real_bits: INTEGER_32
		obsolete "Use `real_32_bits' instead. [2017-05-31]"
			-- Number of bits in a value of type REAL_32
			-- (from PLATFORM)
		do
			Result := 32
		ensure -- from PLATFORM
			instance_free: class
		end

	real_bytes: INTEGER_32
		obsolete "Use `real_32_bytes' instead. [2017-05-31]"
			-- Number of bytes in a value of type REAL_32
			-- (from PLATFORM)
		external
			"built_in static"
		ensure -- from PLATFORM
			instance_free: class
		end

	wide_character_bytes: INTEGER_32
		obsolete "Use `character_32_bytes' instead. [2017-05-31]"
			-- Number of bytes in a value of type CHARACTER_32
			-- (from PLATFORM)
		external
			"built_in static"
		ensure -- from PLATFORM
			instance_free: class
		end
	
feature -- Operations

	plus alias "+" (offset: INTEGER_32): POINTER
			-- Pointer moved by an offset of offset bytes.
			-- (from POINTER_REF)
		do
			Result := null + offset
		end
	
feature -- Output

	Io: STD_FILES
			-- Handle to standard file setup
			-- (from ANY)
		once
			create Result;
			Result.set_output_default
		ensure -- from ANY
			instance_free: class
			io_not_void: Result /= Void
		end

	out: STRING_8
			-- New string containing terse printable representation
			-- of current object
			-- (from ANY)
		do
			Result := tagged_out
		ensure -- from ANY
			out_not_void: Result /= Void
		end

	print (o: detachable ANY)
			-- Write terse external representation of o
			-- on standard output.
			-- (from ANY)
		local
			s: READABLE_STRING_8
		do
			if attached o then
				s := o.out
				if attached {READABLE_STRING_32} s as s32 then
					Io.put_string_32 (s32)
				elseif attached {READABLE_STRING_8} s as s8 then
					Io.put_string (s8)
				else
					Io.put_string_32 (s.as_string_32)
				end
			end
		ensure -- from ANY
			instance_free: class
		end

	frozen tagged_out: STRING_8
			-- New string containing terse printable representation
			-- of current object
			-- (from ANY)
		external
			"built_in"
		ensure -- from ANY
			tagged_out_not_void: Result /= Void
		end
	
feature -- Platform

	is_64_bits: BOOLEAN
			-- Is the current process runing in 64-bit mode
			-- (from PLATFORM)
		external
			"built_in static"
		ensure -- from PLATFORM
			instance_free: class
		end

	is_dotnet: BOOLEAN
			-- Are we targetting .NET?
			-- (from PLATFORM)
		external
			"built_in static"
		ensure -- from PLATFORM
			instance_free: class
		end

	Is_little_endian: BOOLEAN
			-- Is current platform a little endian one?
			-- (from PLATFORM)
		local
			l_nat16: NATURAL_16
			l_nat8: NATURAL_8
			l_first: NATURAL_8
		once
			l_nat16 := 17185
			l_nat8 := 33;
			($l_first).memory_copy ($l_nat16.to_pointer, 1)
			Result := l_first = l_nat8
		ensure -- from PLATFORM
			instance_free: class
		end

	is_mac: BOOLEAN
			-- Are we running on Mac OS?
			-- (from PLATFORM)
		external
			"built_in static"
		ensure -- from PLATFORM
			instance_free: class
		end

	is_scoop_capable: BOOLEAN
			-- Is current platform capable of SCOOP?
			-- (from PLATFORM)
		external
			"built_in static"
		ensure -- from PLATFORM
			instance_free: class
		end

	is_thread_capable: BOOLEAN
			-- Is current platform capable of multi-threading?
			-- (from PLATFORM)
		external
			"built_in static"
		ensure -- from PLATFORM
			instance_free: class
		end

	is_unix: BOOLEAN
			-- Are we running on a Unix like platform?
			-- (from PLATFORM)
		external
			"built_in static"
		ensure -- from PLATFORM
			instance_free: class
		end

	is_vms: BOOLEAN
			-- Are we running on VMS?
			-- (from PLATFORM)
		external
			"built_in static"
		ensure -- from PLATFORM
			instance_free: class
		end

	is_vxworks: BOOLEAN
			-- Are we running on VxWorks?
			-- (from PLATFORM)
		external
			"built_in static"
		ensure -- from PLATFORM
			instance_free: class
		end

	is_windows: BOOLEAN
			-- Are we running on Windows platform?
			-- (from PLATFORM)
		external
			"built_in static"
		ensure -- from PLATFORM
			instance_free: class
		end

	Operating_environment: OPERATING_ENVIRONMENT
			-- Objects available from the operating system
			-- (from ANY)
		once
			create Result
		ensure -- from ANY
			instance_free: class
			operating_environment_not_void: Result /= Void
		end
	
feature {NONE} -- Retrieval

	frozen internal_correct_mismatch
			-- Called from runtime to perform a proper dynamic dispatch on correct_mismatch
			-- from MISMATCH_CORRECTOR.
			-- (from ANY)
		local
			l_msg: STRING_32
			l_exc: EXCEPTIONS
		do
			if attached {MISMATCH_CORRECTOR} Current as l_corrector then
				l_corrector.correct_mismatch
			else
				create l_msg.make_from_string ("Mismatch: ".as_string_32)
				create l_exc;
				l_msg.append (generating_type.name_32);
				l_exc.raise_retrieval_exception (l_msg)
			end
		end
	
invariant
	axes_number_valid: axes_count >= 1
	samples_valid_for_every_axes: samples.count.divisible (axes_count.to_integer_32)

		-- from GAME_HAPTIC_EFFECT
	type_valid: type > 0

		-- from MEMORY_STRUCTURE
	managed_pointer_valid: not shared implies managed_pointer /= Void
	internal_item_valid: shared implies internal_item /= default_pointer

		-- from ANY
	reflexive_equality: standard_is_equal (Current)
	reflexive_conformance: conforms_to (Current)

end -- class GAME_HAPTIC_CUSTOM_EFFECT

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