From 08c950a66931630cea76df831ff1c803c9578bb4 Mon Sep 17 00:00:00 2001
From: surdeus <surdeus@gmail.com>
Date: Thu, 11 Jan 2024 04:45:28 +0300
Subject: [PATCH] feat: trying to optimize the damn triangles.

---
 cmd/test/player.go   | 10 ++++++++++
 cmd/test/trianlge.go |  7 +++----
 engine.go            |  9 ++++++++-
 sprite.go            |  4 ++++
 triangle.go          | 11 +++++++----
 5 files changed, 32 insertions(+), 9 deletions(-)

diff --git a/cmd/test/player.go b/cmd/test/player.go
index 38fb26b..7df7c27 100644
--- a/cmd/test/player.go
+++ b/cmd/test/player.go
@@ -11,6 +11,7 @@ type Player struct {
 	gg.Sprite
 	MoveSpeed  gg.Float
 	ScaleSpeed gg.Float
+	Spawned bool
 }
 
 func NewPlayer() *Player {
@@ -38,6 +39,7 @@ func (p *Player) Start(c *Context) {
 // Custom drawing function.
 func (p *Player) Draw(c *Context) {
 	p.Sprite.Draw(c)
+	return
 	t := p.Transform
 	t.Scale.X *= 4.
 	t.Scale.Y *= 4.
@@ -51,6 +53,9 @@ func (p *Player) Draw(c *Context) {
 }
 
 func (p *Player) Update(c *Context) {
+	if p.Spawned {
+		return
+	}
 	dt := c.DT()
 	cam := c.Camera
 	keys := c.Keys()
@@ -108,6 +113,11 @@ func (p *Player) Update(c *Context) {
 		case gg.Key0:
 			c.Del(p)
 		case gg.KeyB:
+		case gg.Key5:
+			pp := *p
+			counter++
+			p.Spawned = true
+			c.Spawn(&pp)
 		}
 	}
 
diff --git a/cmd/test/trianlge.go b/cmd/test/trianlge.go
index 8dcf030..72df453 100644
--- a/cmd/test/trianlge.go
+++ b/cmd/test/trianlge.go
@@ -32,15 +32,15 @@ func NewTri() *Tri {
 }
 
 func (t *Tri) Update(c *Context) {
-	if t.Spawned {
-		return
-	}
 	dt := c.DT()
 	if t.ContainsPoint(c.AbsCursorPosition()) {
 		t.Color = gg.Rgba(0, 1, 0, 1)
 	} else {
 		t.Color = gg.Rgba(1, 0, 1, 1)
 	}
+	if t.Spawned {
+		return
+	}
 
 	keys := c.Keys()
 
@@ -77,7 +77,6 @@ func (t *Tri) Update(c *Context) {
 		}
 		tt := *t
 		tt.Spawned = true
-		tt.Visible = false
 		tt.Disconnect()
 		if c.Spawn(&tt) == nil {
 			counter++
diff --git a/engine.go b/engine.go
index aa8ef8b..372bcd7 100644
--- a/engine.go
+++ b/engine.go
@@ -74,7 +74,9 @@ type Engine struct {
 	outerEvents, handleEvents EventChan
 	wg sync.WaitGroup
 
-	bufs [LayerBufSize]*Image
+	//bufs [LayerBufSize]*Image
+	vertices []ebiten.Vertex
+	vindices []uint16
 }
 
 type engine Engine
@@ -296,6 +298,8 @@ func (e *engine) Update() error {
 }
 
 func (e *engine) Draw(i *ebiten.Image) {
+	e.vindices = []uint16{}
+	e.vertices = []ebiten.Vertex{}
 	e.dt = time.Since(e.lastTime).Seconds()
 	eng := (*Engine)(e)
 	m := map[Layer][]Drawer{}
@@ -323,6 +327,9 @@ func (e *engine) Draw(i *ebiten.Image) {
 			drawer.Draw(c)
 		}
 	}
+	img := NewImage(1, 1)
+	img.Set(0, 0, Rgba(1, 1, 1, 1))
+	i.DrawTriangles(e.vertices, e.vindices, img, &ebiten.DrawTrianglesOptions{})
 
 	// Empty the buff to generate it again.
 	eng.Camera.buffered = false
diff --git a/sprite.go b/sprite.go
index c747263..7039ac3 100644
--- a/sprite.go
+++ b/sprite.go
@@ -13,6 +13,10 @@ type Sprite struct {
 	Visibility
 }
 
+var (
+	//spritesOp DrawImageOptions
+)
+
 func (s *Sprite) Draw(c *Context) {
 	// Nothing to draw.
 	if s.Images[0] == nil {
diff --git a/triangle.go b/triangle.go
index 53d8fc9..aa47417 100644
--- a/triangle.go
+++ b/triangle.go
@@ -104,14 +104,17 @@ func (r *DrawableTriangles) Draw(c *Context) {
 		}
 		
 		is := make([]uint16, len(r.Triangles) * 3)
+		start := len(c.Engine.vindices)
 		for i := 0 ; i < len(is) ; i++ {
-			is[i] = uint16(i)
+			is[i] = uint16(start + i)
 		}
+
+		c.Engine.vertices = append(c.Engine.vertices, vs...)
+		c.Engine.vindices = append(c.Engine.vindices, is...)
 		
-		img := NewImage(1, 1)
-		img.Set(0, 0, r.Color)
 		
-		c.DrawTriangles(vs, is, img, &r.DrawTrianglesOptions)
+		return
+		//c.DrawTriangles(vs, is, img, &r.DrawTrianglesOptions)
 		return
 	}