99 lines
1.8 KiB
Go
99 lines
1.8 KiB
Go
package main
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import (
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ez "github.com/gen2brain/raylib-go/easings"
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rl "github.com/gen2brain/raylib-go/raylib"
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)
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var (
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fps = int32(60)
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)
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const (
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screenWidth = int32(800)
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screenHeight = int32(450)
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)
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func main() {
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rl.InitWindow(screenWidth, screenHeight, "raylib [shapes] example - easings box anim")
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rec := rl.NewRectangle(float32(screenWidth/2), -100, 100, 100)
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rotation := float32(0)
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alpha := float32(1)
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state := 0
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frames := 0
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rl.SetTargetFPS(fps)
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for !rl.WindowShouldClose() {
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switch state {
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case 0:
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frames++
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rec.Y = ez.ElasticOut(float32(frames), -100, float32(screenHeight/2)+100, 120)
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if frames >= 120 {
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frames = 0
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state = 1
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}
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case 1:
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frames++
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rec.Height = ez.BounceOut(float32(frames), 100, -90, 120)
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rec.Width = ez.BounceOut(float32(frames), 100, float32(screenWidth), 120)
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if frames >= 120 {
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frames++
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state = 2
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}
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case 2:
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frames++
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rotation = ez.QuadOut(float32(frames), 0, 270, 240)
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if frames >= 240 {
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frames = 0
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state = 3
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}
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case 3:
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frames++
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rec.Height = ez.CircOut(float32(frames), 10, float32(screenWidth), 120)
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if frames >= 120 {
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frames = 0
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state = 4
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}
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case 4:
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frames++
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alpha = ez.SineOut(float32(frames), 1, -1, 160)
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if frames >= 160 {
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frames = 0
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state = 5
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}
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default:
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break
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}
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if rl.IsKeyPressed(rl.KeySpace) {
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rec = rl.NewRectangle(float32(screenWidth/2), -100, 100, 100)
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rotation = 0
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alpha = 1
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state = 0
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frames = 0
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}
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rl.BeginDrawing()
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rl.ClearBackground(rl.RayWhite)
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rl.DrawRectanglePro(rec, rl.NewVector2(rec.Width/2, rec.Height/2), rotation, rl.Fade(rl.Black, alpha))
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if state == 5 {
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txtlen := rl.MeasureText("SPACE to replay", 20)
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rl.DrawText("SPACE to replay", (screenWidth/2)-txtlen/2, 200, 20, rl.Black)
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}
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rl.EndDrawing()
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}
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rl.CloseWindow()
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}
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