78 lines
2.3 KiB
Go
78 lines
2.3 KiB
Go
package main
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import (
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"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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raylib.InitWindow(screenWidth, screenHeight, "raylib [core] example - 3d picking")
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camera := raylib.Camera3D{}
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camera.Position = raylib.NewVector3(10.0, 10.0, 10.0)
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camera.Target = raylib.NewVector3(0.0, 0.0, 0.0)
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camera.Up = raylib.NewVector3(0.0, 1.0, 0.0)
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camera.Fovy = 45.0
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camera.Type = raylib.CameraPerspective
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cubePosition := raylib.NewVector3(0.0, 1.0, 0.0)
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cubeSize := raylib.NewVector3(2.0, 2.0, 2.0)
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var ray raylib.Ray
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collision := false
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raylib.SetCameraMode(camera, raylib.CameraFree) // Set a free camera mode
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raylib.SetTargetFPS(60)
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for !raylib.WindowShouldClose() {
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raylib.UpdateCamera(&camera) // Update camera
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if raylib.IsMouseButtonPressed(raylib.MouseLeftButton) {
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// NOTE: This function is NOT WORKING properly!
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ray = raylib.GetMouseRay(raylib.GetMousePosition(), camera)
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// Check collision between ray and box
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min := raylib.NewVector3(cubePosition.X-cubeSize.X/2, cubePosition.Y-cubeSize.Y/2, cubePosition.Z-cubeSize.Z/2)
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max := raylib.NewVector3(cubePosition.X+cubeSize.X/2, cubePosition.Y+cubeSize.Y/2, cubePosition.Z+cubeSize.Z/2)
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collision = raylib.CheckCollisionRayBox(ray, raylib.NewBoundingBox(min, max))
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}
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raylib.BeginDrawing()
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raylib.ClearBackground(raylib.RayWhite)
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raylib.BeginMode3D(camera)
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if collision {
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raylib.DrawCube(cubePosition, cubeSize.X, cubeSize.Y, cubeSize.Z, raylib.Red)
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raylib.DrawCubeWires(cubePosition, cubeSize.X, cubeSize.Y, cubeSize.Z, raylib.Maroon)
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raylib.DrawCubeWires(cubePosition, cubeSize.X+0.2, cubeSize.Y+0.2, cubeSize.Z+0.2, raylib.Green)
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} else {
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raylib.DrawCube(cubePosition, cubeSize.X, cubeSize.Y, cubeSize.Z, raylib.Gray)
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raylib.DrawCubeWires(cubePosition, cubeSize.X, cubeSize.Y, cubeSize.Z, raylib.DarkGray)
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}
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raylib.DrawRay(ray, raylib.Maroon)
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raylib.DrawGrid(10, 1.0)
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raylib.EndMode3D()
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raylib.DrawText("Try selecting the box with mouse!", 240, 10, 20, raylib.DarkGray)
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if collision {
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raylib.DrawText("BOX SELECTED", (screenWidth-raylib.MeasureText("BOX SELECTED", 30))/2, int32(float32(screenHeight)*0.1), 30, raylib.Green)
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}
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raylib.DrawFPS(10, 10)
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raylib.EndDrawing()
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}
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raylib.CloseWindow()
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}
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