func main() {
glRenderer := opengl.NewOpenglRenderer("Lighting", 1920, 1080, true)
gameEngine := engine.NewEngine(glRenderer)
gameEngine.InitFpsDial()
gameEngine.Start(func() {
shader, err := assets.ImportShader("shaders/build/pbr.vert", "shaders/build/pbr.frag")
if err != nil {
panic("error importing shader")
}
gameEngine.DefaultShader(shader)
fetchAssets(gameEngine, func() {
setupScene(gameEngine, shader)
})
// input/controller manager
controllerManager := glfwController.NewControllerManager(glRenderer.Window)
// camera + wasd controls
freeMoveActor := actor.NewFreeMoveActor(gameEngine.Camera())
freeMoveActor.Location = mgl32.Vec3{-6, 2, -6}
freeMoveActor.MoveSpeed = 1.5
mainController := controller.NewBasicMovementController(freeMoveActor, false)
controllerManager.AddController(mainController.(glfwController.Controller))
gameEngine.AddUpdatable(freeMoveActor)
//lock the cursor
glRenderer.LockCursor(true)
// custom key bindings
customController := controller.CreateController()
controllerManager.AddController(customController.(glfwController.Controller))
// close window and exit on escape
customController.BindKeyAction(func() {
glRenderer.Window.SetShouldClose(true)
}, controller.KeyEscape, controller.Press)
})
}
func main() {
//renderer and game engine
glRenderer := opengl.NewOpenglRenderer("ui", 800, 800, false)
gameEngine := engine.NewEngine(glRenderer)
gameEngine.InitFpsDial()
gameEngine.Start(func() {
// load in ui shader
shader := renderer.NewShader()
shader.FragSrc = uiFragmentShader
shader.VertSrc = uiVertexShader
gameEngine.DefaultShader(shader)
// input/controller manager
controllerManager := glfwController.NewControllerManager(glRenderer.Window)
// create windows with content containers
window1, content1 := createWindow(controllerManager)
window2, content2 := createWindow(controllerManager)
// populate content and set window tab order
window1.Tabs = populateContent(content1)
window2.Tabs = htmlContent(content2)
// position windows
window1.SetTranslation(mgl32.Vec2{50, 50}.Vec3(0))
window2.SetTranslation(mgl32.Vec2{450, 50}.Vec3(0))
// Add the windows to the engine
gameEngine.AddOrtho(window1)
gameEngine.AddOrtho(window2)
// render all windows
window1.Render()
window2.Render()
})
}
func main() {
server := len(os.Args) > 1 && os.Args[1] == "server"
var gameEngine engine.Engine
var glRenderer *opengl.OpenglRenderer
network := networking.NewNetwork()
// Start server or connect to server
if server {
gameEngine = engine.NewHeadlessEngine()
network.StartServer(serverPort)
} else {
glRenderer = opengl.NewOpenglRenderer("Networking example", 800, 800, false)
gameEngine = engine.NewEngine(glRenderer)
network.ConnectClient(fmt.Sprintf("%v:%v", serverAddr, serverPort))
}
gameEngine.AddUpdatable(network)
// map containing each player's entity
players := make(map[string]*Player)
//Networked Game events
network.ClientJoinedEvent(func(clientId string) {
fmt.Println("client joined, clientId: ", clientId)
network.TriggerOnServerAndClients("spawn", util.SerializeArgs(clientId, startingPosition))
for _, player := range players {
network.TriggerEvent("spawn", clientId, util.SerializeArgs(player.clientId, player.position))
}
})
network.RegisterEvent("spawn", func(clientId string, data []byte) {
buf := bytes.NewBuffer(data)
playerID := util.Stringfrombytes(buf)
position := util.Vector2frombytes(buf)
if _, ok := players[playerID]; !ok {
player := &Player{clientId: playerID}
players[player.clientId] = player
player.node = renderer.NewNode()
player.position = position
gameEngine.AddUpdatable(player)
if network.IsClient() {
boxGeometry := renderer.CreateBox(30, 30)
boxGeometry.SetColor(color.NRGBA{254, 0, 0, 254})
player.node.Add(boxGeometry)
gameEngine.AddOrtho(player.node)
}
}
})
network.RegisterEvent("move", func(clientId string, data []byte) {
buf := bytes.NewBuffer(data)
playerID := util.Stringfrombytes(buf)
velocity := util.Vector2frombytes(buf)
if network.IsServer() && clientId != playerID {
return // client is only allowed to control the player assigned to them.
}
if player, ok := players[playerID]; ok {
player.velocity = velocity
if network.IsServer() {
network.BroadcastEvent("updatePlayer", util.SerializeArgs(playerID, player.position, player.velocity))
network.FlushAllWriteBuffers()
}
}
})
network.RegisterEvent("updatePlayer", func(clientId string, data []byte) {
if network.IsClient() { // This is a server to client update only
buf := bytes.NewBuffer(data)
playerID := util.Stringfrombytes(buf)
position := util.Vector2frombytes(buf)
velocity := util.Vector2frombytes(buf)
if player, ok := players[playerID]; ok {
player.position = position
player.velocity = velocity
}
}
})
// client setup
gameEngine.Start(func() {
if network.IsClient() {
gameEngine.InitFpsDial()
if shader, err := assets.ImportShader("shaders/build/basic.vert", "shaders/build/basic.frag"); err == nil {
gameEngine.DefaultShader(shader)
}
glRenderer.BackGroundColor(0, 0.4, 0, 0)
// input/controller manager
controllerManager := glfwController.NewControllerManager(glRenderer.Window)
// networked movement controls
move := func(velocity mgl32.Vec2) {
network.TriggerOnServerAndClients("move", util.SerializeArgs(network.ClientToken(), velocity))
}
customController := controller.CreateController()
controllerManager.AddController(customController.(glfwController.Controller))
customController.BindKeyAction(func() { move(mgl32.Vec2{0, -100}) }, controller.KeyW, controller.Press)
customController.BindKeyAction(func() { move(mgl32.Vec2{-100, 0}) }, controller.KeyA, controller.Press)
customController.BindKeyAction(func() { move(mgl32.Vec2{0, 100}) }, controller.KeyS, controller.Press)
customController.BindKeyAction(func() { move(mgl32.Vec2{100, 0}) }, controller.KeyD, controller.Press)
customController.BindKeyAction(func() { move(mgl32.Vec2{}) }, controller.KeyW, controller.Release)
customController.BindKeyAction(func() { move(mgl32.Vec2{}) }, controller.KeyA, controller.Release)
customController.BindKeyAction(func() { move(mgl32.Vec2{}) }, controller.KeyS, controller.Release)
customController.BindKeyAction(func() { move(mgl32.Vec2{}) }, controller.KeyD, controller.Release)
}
})
}
func main() {
//renderer and game engine
glRenderer := opengl.NewOpenglRenderer("Platformer", 800, 800, false)
gameEngine := engine.NewEngine(glRenderer)
gameEngine.InitFpsDial()
// physics engine (Chipmonk)
physicsSpace := chipmunkPhysics.NewChipmonkSpace()
physicsSpace.SetGravity(mgl32.Vec2{0, 400})
gameEngine.AddUpdatable(physicsSpace)
gameEngine.Start(func() {
glRenderer.BackGroundColor(0.7, 0.7, 0.9, 0.0)
// load in default shader
shader := renderer.NewShader()
shader.FragSrc = fragShader
shader.VertSrc = vertShader
gameEngine.DefaultShader(shader)
// The player object
character := NewCharacter()
character.body.SetPosition(mgl32.Vec2{400, 400})
// Add the character to all the things
physicsSpace.AddBody(character.body)
gameEngine.AddOrtho(character.sprite)
gameEngine.AddUpdatable(character)
// terrain
terrainGeometry := renderer.CreateBoxWithOffset(800, 800-floorHeight, 0, floorHeight)
terrainGeometry.SetColor(color.NRGBA{0, 80, 0, 254})
gameEngine.AddOrtho(terrainGeometry)
// terrain physics body
terrainBody := chipmunkPhysics.NewChipmunkBodyStatic()
segment := chipmunk.NewSegment(vect.Vect{0, floorHeight}, vect.Vect{4000, floorHeight}, 0)
terrainBody.Body.AddShape(segment)
physicsSpace.AddBody(terrainBody)
particleNode := renderer.NewNode()
gameEngine.AddOrtho(particleNode)
// create a new timed particle system
spawnParticles := func(load func() *effects.ParticleGroup, position mgl32.Vec2) {
particleGroup := load()
particleGroup.SetTranslation(position.Vec3(0))
effects.TriggerTimedParticleGroup(
effects.TimedParticleGroup{
Particles: particleGroup,
GameEngine: gameEngine,
TargetNode: particleNode,
Life: 0.2,
Cleanup: 10,
},
)
}
// input/controller manager
controllerManager := glfwController.NewControllerManager(glRenderer.Window)
// key bindings
customController := controller.CreateController()
controllerManager.AddController(customController.(glfwController.Controller))
// Walk
customController.BindKeyAction(func() {
character.body.SetVelocity(mgl32.Vec2{-200, character.body.GetVelocity().Y()})
}, controller.KeyA, controller.Press)
customController.BindKeyAction(func() {
character.body.SetVelocity(mgl32.Vec2{200, character.body.GetVelocity().Y()})
}, controller.KeyD, controller.Press)
//Stop walking
customController.BindKeyAction(func() {
character.body.SetVelocity(mgl32.Vec2{0, character.body.GetVelocity().Y()})
}, controller.KeyA, controller.Release)
customController.BindKeyAction(func() {
character.body.SetVelocity(mgl32.Vec2{0, character.body.GetVelocity().Y()})
}, controller.KeyD, controller.Release)
// Jump
customController.BindKeyAction(func() {
character.body.SetVelocity(character.body.GetVelocity().Add(mgl32.Vec2{0, -300}))
spawnParticles(dustParticles, character.body.GetPosition().Add(mgl32.Vec2{0, 0.5 * characterSize}))
}, controller.KeySpace, controller.Press)
// shoot
customController.BindMouseAction(func() {
spawnParticles(majicParticles, character.body.GetPosition())
}, controller.MouseButtonLeft, controller.Press)
// create sparks when player collides with somthing
var collisionTimer time.Time
physicsSpace.SetOnCollision(func(shapeA, shapeB *chipmunk.Shape) {
if time.Since(collisionTimer) > 200*time.Millisecond {
spawnParticles(sparkParticles, character.body.GetPosition().Add(mgl32.Vec2{0, 0.5 * characterSize}))
}
collisionTimer = time.Now()
})
})
}
func (e *Editor) Start() {
glRenderer := opengl.NewOpenglRenderer("GoEngine Editor", 1800, 900, false)
e.renderer = glRenderer
e.gameEngine = engine.NewEngine(e.renderer)
e.gameEngine.Start(func() {
shader, err := assets.ImportShader(
filepath.Join(e.assetDir, "shaders/build/pbr.vert"),
filepath.Join(e.assetDir, "shaders/build/pbr.frag"),
)
if err != nil {
panic("error importing shader")
}
e.gameEngine.DefaultShader(shader)
// Sky cubemap
skyImg, err := assets.ImportImage(filepath.Join(e.assetDir, "resources/cubemap.png"))
if err == nil {
geom := renderer.CreateSkyBox()
geom.Transform(mgl32.Scale3D(10000, 10000, 10000))
skyNode := renderer.NewNode()
skyNode.SetOrientation(mgl32.QuatRotate(1.57, mgl32.Vec3{0, 1, 0}))
skyNode.Material = renderer.NewMaterial(renderer.NewTexture("diffuseMap", skyImg, false))
skyNode.RendererParams = renderer.NewRendererParams()
skyNode.RendererParams.CullBackface = false
skyNode.RendererParams.Unlit = true
skyNode.Add(geom)
e.gameEngine.AddSpatial(skyNode)
// create an environmentMap using the skybox texture
envCubeMap := renderer.NewCubemap("environmentMap", skyImg, true)
e.gameEngine.DefaultCubeMap(envCubeMap)
}
l := renderer.NewLight(renderer.DIRECTIONAL)
l.Color = [3]float32{0.7, 0.7, 0.8}
e.gameEngine.AddLight(l)
//root node
e.gameEngine.AddSpatial(e.rootMapNode)
//input/controller manager
e.controllerManager = glfwController.NewControllerManager(glRenderer.Window)
//camera + player
camera := e.gameEngine.Camera()
freeMoveActor := actor.NewFreeMoveActor(camera)
freeMoveActor.MoveSpeed = 20.0
freeMoveActor.LookSpeed = 0.002
mainController := controller.NewBasicMovementController(freeMoveActor, true)
e.controllerManager.AddController(mainController.(glfwController.Controller))
e.gameEngine.AddUpdatable(freeMoveActor)
e.initSelectSprite()
e.gameEngine.AddUpdatable(engine.UpdatableFunc(e.updateSelectSprite))
//editor controller
e.controllerManager.AddController(NewEditorController(e).(glfwController.Controller))
//custom controller
e.customController = controller.CreateController()
e.controllerManager.AddController(e.customController.(glfwController.Controller))
e.setupUI()
})
}
func main() {
glRenderer := opengl.NewOpenglRenderer("Simple", 800, 800, false)
gameEngine := engine.NewEngine(glRenderer)
gameEngine.InitFpsDial()
gameEngine.Start(func() {
if shader, err := assets.ImportShader("shaders/build/basic.vert", "shaders/build/basic.frag"); err == nil {
gameEngine.DefaultShader(shader)
}
// sky cube
skyImg, err := assets.ImportImage("resources/cubemap.png")
if err == nil {
geom := renderer.CreateSkyBox()
geom.Transform(mgl32.Scale3D(10000, 10000, 10000))
skyNode := renderer.NewNode()
skyNode.SetOrientation(mgl32.QuatRotate(1.57, mgl32.Vec3{0, 1, 0}))
skyNode.Material = renderer.NewMaterial(renderer.NewTexture("diffuseMap", skyImg, false))
skyNode.RendererParams = renderer.NewRendererParams()
skyNode.RendererParams.CullBackface = false
skyNode.RendererParams.Unlit = true
skyNode.Add(geom)
gameEngine.AddSpatial(skyNode)
}
// Add some light to the scene
ambientLight := renderer.NewLight(renderer.AMBIENT)
ambientLight.Color = [3]float32{0.3, 0.3, 0.3}
gameEngine.AddLight(ambientLight)
// Create a red box geometry, attach to a node, add the node to the scenegraph
boxGeometry := renderer.CreateBox(10, 10)
boxGeometry.SetColor(color.NRGBA{254, 0, 0, 254})
boxNode := renderer.NewNode()
boxNode.RendererParams = renderer.NewRendererParams()
boxNode.RendererParams.CullBackface = false
boxNode.Material = renderer.NewMaterial()
boxNode.SetTranslation(mgl32.Vec3{30, 0})
boxNode.Add(boxGeometry)
gameEngine.AddSpatial(boxNode)
// make the box spin
var angle float64
gameEngine.AddUpdatable(engine.UpdatableFunc(func(dt float64) {
angle += dt
q := mgl32.QuatRotate(float32(angle), mgl32.Vec3{0, 1, 0})
boxNode.SetOrientation(q)
}))
// input/controller manager
controllerManager := glfwController.NewControllerManager(glRenderer.Window)
// camera + wasd controls
camera := gameEngine.Camera()
freeMoveActor := actor.NewFreeMoveActor(camera)
freeMoveActor.Location = mgl32.Vec3{}
mainController := controller.NewBasicMovementController(freeMoveActor, false)
controllerManager.AddController(mainController.(glfwController.Controller))
gameEngine.AddUpdatable(freeMoveActor)
//lock the cursor
glRenderer.LockCursor(true)
// custom key bindings
customController := controller.CreateController()
controllerManager.AddController(customController.(glfwController.Controller))
// close window and exit on escape
customController.BindKeyAction(func() {
glRenderer.Window.SetShouldClose(true)
}, controller.KeyEscape, controller.Press)
})
}