84 lines
2.1 KiB
Go
84 lines
2.1 KiB
Go
package main
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import (
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"math"
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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(1280)
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screenHeight := int32(720)
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rl.SetConfigFlags(rl.FlagMsaa4xHint)
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rl.InitWindow(screenWidth, screenHeight, "raylib [shapes] example - following eyes")
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scleraLpos := rl.NewVector2(float32(screenWidth/2)-100, float32(screenHeight/2))
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scleraRpos := rl.NewVector2(float32(screenWidth/2)+100, float32(screenHeight/2))
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scleraRad := 80
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irisLpos := rl.NewVector2(float32(screenWidth/2)-100, float32(screenHeight/2))
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irisRpos := rl.NewVector2(float32(screenWidth/2)+100, float32(screenHeight/2))
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irisRad := 24
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angle := float32(0)
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dx, dy, dxx, dyy := float32(0), float32(0), float32(0), float32(0)
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rl.SetTargetFPS(60)
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rl.SetMousePosition(0, 0)
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for !rl.WindowShouldClose() {
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irisLpos = rl.GetMousePosition()
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irisRpos = rl.GetMousePosition()
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if !rl.CheckCollisionPointCircle(irisLpos, scleraLpos, float32(scleraRad-20)) {
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dx = irisLpos.X - scleraLpos.X
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dy = irisLpos.Y - scleraLpos.Y
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angle = float32(math.Atan2(float64(dy), float64(dx)))
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dxx = (float32(scleraRad-irisRad) * float32(math.Cos(float64(angle))))
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dyy = (float32(scleraRad-irisRad) * float32(math.Sin(float64(angle))))
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irisLpos.X = scleraLpos.X + dxx
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irisLpos.Y = scleraLpos.Y + dyy
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}
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if !rl.CheckCollisionPointCircle(irisRpos, scleraRpos, float32(scleraRad)-20) {
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dx = irisRpos.X - scleraRpos.X
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dy = irisRpos.Y - scleraRpos.Y
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angle = float32(math.Atan2(float64(dy), float64(dx)))
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dxx = (float32(scleraRad-irisRad) * float32(math.Cos(float64(angle))))
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dyy = (float32(scleraRad-irisRad) * float32(math.Sin(float64(angle))))
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irisRpos.X = scleraRpos.X + dxx
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irisRpos.Y = scleraRpos.Y + dyy
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}
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rl.BeginDrawing()
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rl.ClearBackground(rl.RayWhite)
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rl.DrawCircleV(scleraLpos, float32(scleraRad), rl.LightGray)
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rl.DrawCircleV(irisLpos, float32(irisRad), rl.Red)
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rl.DrawCircleV(irisLpos, 10, rl.Black)
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rl.DrawCircleV(scleraRpos, float32(scleraRad), rl.LightGray)
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rl.DrawCircleV(irisRpos, float32(irisRad), rl.Orange)
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rl.DrawCircleV(irisRpos, 10, rl.Black)
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rl.DrawFPS(screenWidth-100, 10)
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rl.EndDrawing()
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}
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rl.CloseWindow()
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}
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