55 lines
1.4 KiB
Go
55 lines
1.4 KiB
Go
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package main
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import (
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"math"
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rl "github.com/gen2brain/raylib-go/raylib"
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)
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func UpdateCamera(camera *rl.Camera3D, player rl.Vector3, deltaTime float32) {
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// Update camera based on mouse wheel
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wheelMove := rl.GetMouseWheelMove()
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if wheelMove != 0 {
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cameraDistance += -wheelMove * 5
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if cameraDistance < 10 {
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cameraDistance = 10
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}
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if cameraDistance > 250 {
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cameraDistance = 250
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}
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}
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// Orbit camera around the player using arrow keys
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if rl.IsKeyDown(rl.KeyRight) {
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cameraYaw += 100 * deltaTime
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}
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if rl.IsKeyDown(rl.KeyLeft) {
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cameraYaw -= 100 * deltaTime
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}
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if rl.IsKeyDown(rl.KeyUp) {
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cameraPitch -= 50 * deltaTime
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if cameraPitch < 20 {
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cameraPitch = 20
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}
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}
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if rl.IsKeyDown(rl.KeyDown) {
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cameraPitch += 50 * deltaTime
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if cameraPitch > 85 {
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cameraPitch = 85
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}
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}
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// Calculate the new camera position using spherical coordinates
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cameraYawRad := float64(cameraYaw) * rl.Deg2rad
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cameraPitchRad := float64(cameraPitch) * rl.Deg2rad
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cameraPos := rl.Vector3{
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X: player.X + cameraDistance*float32(math.Cos(cameraYawRad))*float32(math.Cos(cameraPitchRad)),
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Y: player.Y + cameraDistance*float32(math.Sin(cameraPitchRad)),
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Z: player.Z + cameraDistance*float32(math.Sin(cameraYawRad))*float32(math.Cos(cameraPitchRad)),
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}
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// Update the camera's position and target
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camera.Position = cameraPos
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camera.Target = rl.NewVector3(player.X, player.Y, player.Z)
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}
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