step

examples/core/gestures_detection/main.go

@@ -0,0 +1,99 @@
+package main
+
+import (
+	"github.com/gen2brain/raylib-go/raylib"
+)
+
+var (
+	maxGestureStrings int = 20
+)
+
+func main() {
+	screenWidth := int32(800)
+	screenHeight := int32(450)
+
+	rl.InitWindow(screenWidth, screenHeight, "raylib [core] example - gestures detection")
+
+	touchPosition := rl.NewVector2(0, 0)
+	touchArea := rl.NewRectangle(220, 10, float32(screenWidth)-230, float32(screenHeight)-20)
+
+	gestureStrings := make([]string, 0)
+
+	currentGesture := rl.GestureNone
+	lastGesture := rl.GestureNone
+
+	//rl.SetGesturesEnabled(uint32(rl.GestureHold | rl.GestureDrag)) // Enable only some gestures to be detected
+
+	rl.SetTargetFPS(60)
+
+	for !rl.WindowShouldClose() {
+		lastGesture = currentGesture
+		currentGesture = rl.GetGestureDetected()
+		touchPosition = rl.GetTouchPosition(0)
+
+		if rl.CheckCollisionPointRec(touchPosition, touchArea) && currentGesture != rl.GestureNone {
+			if currentGesture != lastGesture {
+				switch currentGesture {
+				case rl.GestureTap:
+					gestureStrings = append(gestureStrings, "GESTURE TAP")
+				case rl.GestureDoubletap:
+					gestureStrings = append(gestureStrings, "GESTURE DOUBLETAP")
+				case rl.GestureHold:
+					gestureStrings = append(gestureStrings, "GESTURE HOLD")
+				case rl.GestureDrag:
+					gestureStrings = append(gestureStrings, "GESTURE DRAG")
+				case rl.GestureSwipeRight:
+					gestureStrings = append(gestureStrings, "GESTURE SWIPE RIGHT")
+				case rl.GestureSwipeLeft:
+					gestureStrings = append(gestureStrings, "GESTURE SWIPE LEFT")
+				case rl.GestureSwipeUp:
+					gestureStrings = append(gestureStrings, "GESTURE SWIPE UP")
+				case rl.GestureSwipeDown:
+					gestureStrings = append(gestureStrings, "GESTURE SWIPE DOWN")
+				case rl.GesturePinchIn:
+					gestureStrings = append(gestureStrings, "GESTURE PINCH IN")
+				case rl.GesturePinchOut:
+					gestureStrings = append(gestureStrings, "GESTURE PINCH OUT")
+				}
+
+				if len(gestureStrings) >= maxGestureStrings {
+					gestureStrings = make([]string, 0)
+				}
+			}
+		}
+
+		rl.BeginDrawing()
+
+		rl.ClearBackground(rl.RayWhite)
+
+		rl.DrawRectangleRec(touchArea, rl.Gray)
+		rl.DrawRectangle(225, 15, screenWidth-240, screenHeight-30, rl.RayWhite)
+
+		rl.DrawText("GESTURES TEST AREA", screenWidth-270, screenHeight-40, 20, rl.Fade(rl.Gray, 0.5))
+
+		for i := 0; i < len(gestureStrings); i++ {
+			if i%2 == 0 {
+				rl.DrawRectangle(10, int32(30+20*i), 200, 20, rl.Fade(rl.LightGray, 0.5))
+			} else {
+				rl.DrawRectangle(10, int32(30+20*i), 200, 20, rl.Fade(rl.LightGray, 0.3))
+			}
+
+			if i < len(gestureStrings)-1 {
+				rl.DrawText(gestureStrings[i], 35, int32(36+20*i), 10, rl.DarkGray)
+			} else {
+				rl.DrawText(gestureStrings[i], 35, int32(36+20*i), 10, rl.Maroon)
+			}
+		}
+
+		rl.DrawRectangleLines(10, 29, 200, screenHeight-50, rl.Gray)
+		rl.DrawText("DETECTED GESTURES", 50, 15, 10, rl.Gray)
+
+		if currentGesture != rl.GestureNone {
+			rl.DrawCircleV(touchPosition, 30, rl.Maroon)
+		}
+
+		rl.EndDrawing()
+	}
+
+	rl.CloseWindow()
+}