141 lines
3.2 KiB
Ada
141 lines
3.2 KiB
Ada
package body openGL.texture_Set
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is
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-------------
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--- Animation
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--
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function to_Frames (From : in texture_Set.texture_Ids) return Frames
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is
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Result : Frames (1 .. From'Length);
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begin
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for i in From'Range
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loop
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Result (i).texture_Id := From (i);
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end loop;
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return Result;
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end to_Frames;
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procedure animate (the_Animation : in out Animation;
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texture_Applies : in out texture_Apply_array)
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is
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use ada.Calendar;
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Now : constant ada.Calendar.Time := Clock;
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begin
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if Now >= the_Animation.next_frame_Time
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then
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declare
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next_frame_Id : constant frame_Id := (if the_Animation.Current < the_Animation.frame_Count then the_Animation.Current + 1
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else 1);
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old_Frame : Frame renames the_Animation.Frames (the_Animation.Current);
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new_Frame : Frame renames the_Animation.Frames (next_frame_Id);
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begin
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texture_Applies (old_Frame.texture_Id) := False;
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texture_Applies (new_Frame.texture_Id) := True;
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the_Animation.Current := next_frame_Id;
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the_Animation.next_frame_Time := Now + the_Animation.frame_Duration;
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end;
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end if;
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end animate;
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-----------
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--- Details
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--
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function to_Details (texture_Assets : in asset_Names;
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Animation : in Animation_view := null) return Details
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is
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Result : Details;
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begin
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Result.texture_Count := texture_Assets'Length;
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for i in 1 .. texture_Assets'Length
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loop
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Result.Textures (i) := texture_Assets (i);
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end loop;
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Result.Animation := Animation;
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return Result;
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end to_Details;
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--------
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--- Item
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--
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procedure Texture_is (in_Set : in out Item; Which : texture_ID := 1; Now : in openGL.Texture.Object)
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is
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begin
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in_Set.Textures (Which).Object := Now;
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in_Set.is_Transparent := in_Set.is_Transparent
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or Now .is_Transparent;
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if Natural (Which) > in_Set.Count
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then
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in_Set.Count := Natural (Which);
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end if;
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end Texture_is;
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function Texture (in_Set : in Item; Which : texture_ID := 1) return openGL.Texture.Object
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is
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begin
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return in_Set.Textures (Which).Object;
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end Texture;
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-----------
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--- Streams
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--
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procedure write (Stream : not null access Ada.Streams.Root_Stream_Type'Class;
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Item : in Animation_view)
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is
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begin
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if Item = null
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then
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Boolean'write (Stream, False);
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else
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Boolean'write (Stream, True);
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Animation'output (Stream, Item.all);
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end if;
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end write;
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procedure read (Stream : not null access Ada.Streams.Root_Stream_Type'Class;
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Item : out Animation_view)
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is
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Item_not_null : Boolean;
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begin
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Boolean'read (Stream, Item_not_null);
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if Item_not_null
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then
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Item := new Animation' (Animation'Input (Stream));
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else
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Item := null;
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end if;
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end read;
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end openGL.texture_Set;
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