forked from gen2brain/raylib-go
-
Notifications
You must be signed in to change notification settings - Fork 0
/
main.go
77 lines (52 loc) · 2.02 KB
/
main.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
package main
import (
"github.com/gen2brain/raylib-go/raylib"
)
func main() {
screenWidth := int32(800)
screenHeight := int32(450)
rl.InitWindow(screenWidth, screenHeight, "raylib [core] example - 3d picking")
camera := rl.Camera3D{}
camera.Position = rl.NewVector3(10.0, 10.0, 10.0)
camera.Target = rl.NewVector3(0.0, 0.0, 0.0)
camera.Up = rl.NewVector3(0.0, 1.0, 0.0)
camera.Fovy = 45.0
camera.Type = rl.CameraPerspective
cubePosition := rl.NewVector3(0.0, 1.0, 0.0)
cubeSize := rl.NewVector3(2.0, 2.0, 2.0)
var ray rl.Ray
collision := false
rl.SetCameraMode(camera, rl.CameraFree) // Set a free camera mode
rl.SetTargetFPS(60)
for !rl.WindowShouldClose() {
rl.UpdateCamera(&camera) // Update camera
if rl.IsMouseButtonPressed(rl.MouseLeftButton) {
ray = rl.GetMouseRay(rl.GetMousePosition(), camera)
// Check collision between ray and box
min := rl.NewVector3(cubePosition.X-cubeSize.X/2, cubePosition.Y-cubeSize.Y/2, cubePosition.Z-cubeSize.Z/2)
max := rl.NewVector3(cubePosition.X+cubeSize.X/2, cubePosition.Y+cubeSize.Y/2, cubePosition.Z+cubeSize.Z/2)
collision = rl.CheckCollisionRayBox(ray, rl.NewBoundingBox(min, max))
}
rl.BeginDrawing()
rl.ClearBackground(rl.RayWhite)
rl.BeginMode3D(camera)
if collision {
rl.DrawCube(cubePosition, cubeSize.X, cubeSize.Y, cubeSize.Z, rl.Red)
rl.DrawCubeWires(cubePosition, cubeSize.X, cubeSize.Y, cubeSize.Z, rl.Maroon)
rl.DrawCubeWires(cubePosition, cubeSize.X+0.2, cubeSize.Y+0.2, cubeSize.Z+0.2, rl.Green)
} else {
rl.DrawCube(cubePosition, cubeSize.X, cubeSize.Y, cubeSize.Z, rl.Gray)
rl.DrawCubeWires(cubePosition, cubeSize.X, cubeSize.Y, cubeSize.Z, rl.DarkGray)
}
rl.DrawRay(ray, rl.Maroon)
rl.DrawGrid(10, 1.0)
rl.EndMode3D()
rl.DrawText("Try selecting the box with mouse!", 240, 10, 20, rl.DarkGray)
if collision {
rl.DrawText("BOX SELECTED", (screenWidth-rl.MeasureText("BOX SELECTED", 30))/2, int32(float32(screenHeight)*0.1), 30, rl.Green)
}
rl.DrawFPS(10, 10)
rl.EndDrawing()
}
rl.CloseWindow()
}