86 lines
1.5 KiB
Go
86 lines
1.5 KiB
Go
package main
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import (
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ez "git.terah.dev/UnrealXR/raylib-go/easings"
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rl "git.terah.dev/UnrealXR/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.SetConfigFlags(rl.FlagMsaa4xHint)
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rl.InitWindow(screenWidth, screenHeight, "raylib [shapes] example - easings ball anim")
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ballPosX := -100
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ballRadius := 20
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ballAlpha := float32(0)
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state := 0
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frames := 0
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rl.SetTargetFPS(60)
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for !rl.WindowShouldClose() {
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if state == 0 {
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frames++
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ballPosX = int(ez.ElasticOut(float32(frames), -100, float32(screenWidth/2)+100, 100))
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if frames >= 100 {
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frames = 0
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state = 1
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}
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} else if state == 1 {
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frames++
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ballRadius = int(ez.ElasticIn(float32(frames), 20, 500, 150))
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if frames >= 150 {
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frames = 0
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state = 2
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}
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} else if state == 2 {
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frames++
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ballAlpha = ez.CubicOut(float32(frames), 0, 1, 150)
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if frames >= 150 {
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frames = 0
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state = 3
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}
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} else if state == 3 {
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if rl.IsKeyPressed(rl.KeyEnter) {
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ballPosX = -100
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ballRadius = 20
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ballAlpha = 0
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state = 0
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}
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}
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if rl.IsKeyPressed(rl.KeyR) {
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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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if state >= 2 {
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rl.DrawRectangle(0, 0, screenWidth, screenHeight, rl.Green)
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}
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rl.DrawCircle(int32(ballPosX), 200, float32(ballRadius), rl.Fade(rl.Red, 1-ballAlpha))
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if state == 3 {
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textlen := rl.MeasureText("press ENTER to replay", 20)
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rl.DrawText("press ENTER to replay", (screenWidth/2)-textlen/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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