From 589a6151b2864fdd1f12bdcdfd43e2f33c0942d3 Mon Sep 17 00:00:00 2001
From: Zachary Snow <zachary.snow@gmail.com>
Date: Wed, 16 Sep 2026 19:46:16 +0200
Subject: [PATCH 1/2] flag example

---
 example/flag/main.go | 78 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 example/flag/main.go

diff --git a/example/flag/main.go b/example/flag/main.go
new file mode 100644
index 0000000..a4dc0a3
--- /dev/null
+++ b/example/flag/main.go
@@ -0,0 +1,78 @@
+// Using the raylib library to open a window and draw a waving flag.
+//
+// Usage:
+//
+//	make example name=flag
+//	./build/flag
+package main
+
+import (
+	rl "solod.dev/raylib/libraylib"
+	"solod.dev/so/c"
+	"solod.dev/so/math"
+)
+
+var _ c.Int // for implicit int -> c.Int conversion
+
+const (
+	screenWidth  = 800
+	screenHeight = 450
+
+	halfScreenWidth  = screenWidth / 2
+	halfScreenHeight = screenHeight / 2
+
+	flagWidth  = 640
+	flagHeight = 320
+
+	halfFlagWidth  = flagWidth / 2
+	halfFlagHeight = flagHeight / 2
+
+	flagParts     = 25
+	flagPartWidth = flagWidth / flagParts
+
+	elapsedTimeFactor = 10
+	yOffsetFactor     = 10
+)
+
+func main() {
+	rl.InitWindow(screenWidth, screenHeight, "Solod Flag")
+	defer rl.CloseWindow()
+
+	rl.SetTargetFPS(60)
+
+	image := rl.GenImageColor(flagWidth, flagHeight, rl.Color{R: 13, G: 50, B: 89, A: 255})
+	rl.ImageDrawText(&image, "solod", 150, 70, 128, rl.Color{R: 242, G: 203, B: 73, A: 255})
+	rl.ImageDrawText(&image, "Go can be a better C", 150, 190, 30, rl.WHITE)
+
+	texture := rl.LoadTextureFromImage(image)
+
+	rl.UnloadImage(image)
+
+	for !rl.WindowShouldClose() {
+		elapsedTime := rl.GetTime()
+
+		rl.BeginDrawing()
+		rl.ClearBackground(rl.BLACK)
+		for i := 0; i < flagParts; i += 1 {
+			angle := float64(flagPartWidth*i) + (elapsedTime * elapsedTimeFactor)
+			rl.DrawTexturePro(
+				texture,
+				rl.Rectangle{
+					X:      float32(flagPartWidth * i),
+					Y:      0,
+					Width:  flagPartWidth,
+					Height: flagHeight,
+				},
+				rl.Rectangle{
+					X:      halfScreenWidth + float32(flagPartWidth*i),
+					Y:      halfScreenHeight + (float32(math.Sin(angle)) * yOffsetFactor),
+					Width:  flagPartWidth,
+					Height: flagHeight,
+				},
+				rl.Vector2{X: halfFlagWidth, Y: halfFlagHeight},
+				0.0,
+				rl.WHITE)
+		}
+		rl.EndDrawing()
+	}
+}

From ea3a304f88d02437da304b838ee01fa657efbd7e Mon Sep 17 00:00:00 2001
From: Zachary Snow <zachary.snow@gmail.com>
Date: Thu, 17 Sep 2026 10:02:39 +0200
Subject: [PATCH 2/2] Optimize a bit.

---
 example/flag/main.go | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/example/flag/main.go b/example/flag/main.go
index a4dc0a3..80c8bba 100644
--- a/example/flag/main.go
+++ b/example/flag/main.go
@@ -30,8 +30,8 @@ const (
 	flagParts     = 25
 	flagPartWidth = flagWidth / flagParts
 
-	elapsedTimeFactor = 10
-	yOffsetFactor     = 10
+	speedFactor = 10
+	waveFactor  = 10
 )
 
 func main() {
@@ -45,6 +45,7 @@ func main() {
 	rl.ImageDrawText(&image, "Go can be a better C", 150, 190, 30, rl.WHITE)
 
 	texture := rl.LoadTextureFromImage(image)
+	defer rl.UnloadTexture(texture)
 
 	rl.UnloadImage(image)
 
@@ -53,23 +54,26 @@ func main() {
 
 		rl.BeginDrawing()
 		rl.ClearBackground(rl.BLACK)
+
+		origin := rl.Vector2{X: halfFlagWidth, Y: halfFlagHeight}
 		for i := 0; i < flagParts; i += 1 {
-			angle := float64(flagPartWidth*i) + (elapsedTime * elapsedTimeFactor)
+			x := float32(flagPartWidth * i)
+			angle := float64(x) + elapsedTime*speedFactor
 			rl.DrawTexturePro(
 				texture,
 				rl.Rectangle{
-					X:      float32(flagPartWidth * i),
+					X:      x,
 					Y:      0,
 					Width:  flagPartWidth,
 					Height: flagHeight,
 				},
 				rl.Rectangle{
-					X:      halfScreenWidth + float32(flagPartWidth*i),
-					Y:      halfScreenHeight + (float32(math.Sin(angle)) * yOffsetFactor),
+					X:      halfScreenWidth + x,
+					Y:      halfScreenHeight + float32(math.Sin(angle)*waveFactor),
 					Width:  flagPartWidth,
 					Height: flagHeight,
 				},
-				rl.Vector2{X: halfFlagWidth, Y: halfFlagHeight},
+				origin,
 				0.0,
 				rl.WHITE)
 		}