func ImportShader(vertexFile, fragmentFile string) (*renderer.Shader, error) {
vertsrc, err := ioutil.ReadFile(vertexFile)
if err != nil {
fmt.Printf("Error vertex file: %v\n", err)
return nil, err
}
fragsrc, err := ioutil.ReadFile(fragmentFile)
if err != nil {
fmt.Printf("Error fragment file: %v\n", err)
return nil, err
}
shader := renderer.NewShader()
shader.VertSrc = string(vertsrc)
shader.FragSrc = string(fragsrc)
return shader, nil
}
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() {
//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()
})
})
}