103 lines
2.5 KiB
C#
103 lines
2.5 KiB
C#
using System.Collections.Generic;
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using System.Linq;
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namespace OpenRa.Game.Graphics
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{
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interface IHandleInput
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{
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bool HandleInput(MouseInput mi);
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}
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class Viewport
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{
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readonly float2 screenSize;
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float2 scrollPosition;
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readonly Renderer renderer;
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public float2 Location { get { return scrollPosition; } }
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public int Width { get { return (int)screenSize.X; } }
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public int Height { get { return (int)screenSize.Y; } }
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SpriteRenderer cursorRenderer;
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int2 mousePos;
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float cursorFrame = 0f;
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public void Scroll(float2 delta)
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{
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scrollPosition = scrollPosition + delta;
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}
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public IEnumerable<IHandleInput> regions { get { return new IHandleInput[] { Game.chrome, Game.controller }; } }
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public Viewport(float2 screenSize, int2 mapStart, int2 mapEnd, Renderer renderer)
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{
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this.screenSize = screenSize;
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this.renderer = renderer;
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cursorRenderer = new SpriteRenderer(renderer, true);
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this.scrollPosition = Game.CellSize* mapStart;
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}
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public void DrawRegions()
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{
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float2 r1 = new float2(2, -2) / screenSize;
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float2 r2 = new float2(-1, 1);
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renderer.BeginFrame(r1, r2, scrollPosition);
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Game.worldRenderer.Draw();
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Game.chrome.Draw();
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var c = Game.chrome.HitTest(mousePos) ? Cursor.Default : Game.controller.ChooseCursor();
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cursorRenderer.DrawSprite(c.GetSprite((int)cursorFrame), mousePos + Location - c.GetHotspot(), 0);
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cursorRenderer.Flush();
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renderer.EndFrame();
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}
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public void Tick()
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{
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cursorFrame += 0.5f;
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}
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IHandleInput dragRegion = null;
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public void DispatchMouseInput(MouseInput mi)
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{
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if (mi.Event == MouseInputEvent.Move)
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mousePos = mi.Location;
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if (dragRegion != null) {
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dragRegion.HandleInput( mi );
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if (mi.Event == MouseInputEvent.Up) dragRegion = null;
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return;
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}
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dragRegion = regions.FirstOrDefault(r => r.HandleInput(mi));
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if (mi.Event != MouseInputEvent.Down)
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dragRegion = null;
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}
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public float2 ViewToWorld(MouseInput mi)
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{
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return (1 / 24.0f) * (new float2(mi.Location.X, mi.Location.Y) + Location);
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}
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public void Center(IEnumerable<Actor> actors)
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{
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if (!actors.Any()) return;
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var avgPos = (1f / actors.Count()) * actors
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.Select(a => a.CenterLocation)
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.Aggregate((a, b) => a + b);
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scrollPosition = avgPos - .5f * new float2(Width, Height);
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}
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public void GoToStartLocation()
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{
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Center(Game.world.Actors.Where(a => a.Owner == Game.LocalPlayer));
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}
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}
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}
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