44 lines
974 B
Go
44 lines
974 B
Go
package main
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import (
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rl "github.com/gen2brain/raylib-go/raylib"
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)
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func main() {
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screenWidth := int32(800)
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screenHeight := int32(450)
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rl.InitWindow(screenWidth, screenHeight, "Bouncing Ball in Go - raylib")
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defer rl.CloseWindow()
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rl.SetTargetFPS(60)
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// Ball properties
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ballRadius := float32(20)
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ballPos := rl.NewVector2(float32(screenWidth)/2.0, float32(screenHeight)/2.0)
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ballSpeed := rl.NewVector2(4, 3)
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ballColor := rl.Red
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for !rl.WindowShouldClose() {
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// Update
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ballPos.X += ballSpeed.X
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ballPos.Y += ballSpeed.Y
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// Bounce on edges
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if ballPos.X >= float32(screenWidth)-ballRadius || ballPos.X <= ballRadius {
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ballSpeed.X *= -1
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}
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if ballPos.Y >= float32(screenHeight)-ballRadius || ballPos.Y <= ballRadius {
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ballSpeed.Y *= -1
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}
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// Draw
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rl.BeginDrawing()
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rl.ClearBackground(rl.RayWhite)
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rl.DrawText("Bouncing Ball Example", 10, 10, 20, rl.DarkGray)
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rl.DrawCircleV(ballPos, ballRadius, ballColor)
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rl.EndDrawing()
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}
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}
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