func NewGameState(window *sdl.Window, world *World) (gamestate *GameState) {
gl.ClearColor(0., 0., 0.4, 0.0)
gl.Enable(gl.DEPTH_TEST)
bar := tw.NewBar("TweakBar")
gamestate = &GameState{
Window: window,
Camera: nil,
Bar: bar,
World: world,
Fps: 0,
Options: settings.BoolOptions{},
}
opt := &gamestate.Options
opt.Load()
gamestate.Camera = gamestate.World.Player.GetCamera()
tw.Define(" GLOBAL help='This example shows how to integrate AntTweakBar with SDL2 and OpenGL.' ")
bar.AddVarRO("fps", tw.TYPE_FLOAT, unsafe.Pointer(&gamestate.Fps), "")
opt.CreateGui(bar)
for i, portal := range gamestate.World.KdTree {
ptr := &(portal.(*Portal).Orientation)
bar.AddVarRW(fmt.Sprintf("Rotation %d", i), tw.TYPE_QUAT4F, unsafe.Pointer(ptr), "")
}
//window.GetSize(w, h)
w, h := window.GetSize()
tw.WindowSize(w, h)
return
}
// returns false if the player wants to quit
func Input(gs *gamestate.GameState, worldRenderer *rendering.WorldRenderer) bool {
running := true
window := gs.Window
inp := gamestate.PlayerInput{}
for event := sdl.PollEvent(); event != nil; event = sdl.PollEvent() {
consumeEvent := true
if !sdl.GetRelativeMouseMode() {
consumeEvent = tw.EventSDL(event, 2, 0)
}
if consumeEvent {
switch e := event.(type) {
case *sdl.WindowEvent:
switch e.Event {
case sdl.WINDOWEVENT_CLOSE:
running = false
case sdl.WINDOWEVENT_RESIZED:
width, height := int(e.Data1), int(e.Data2)
worldRenderer.Resize(width, height)
tw.WindowSize(width, height)
}
case *sdl.MouseButtonEvent:
button := e.Button
if e.State == sdl.PRESSED && drag == 255 {
drag = e.Button
}
if e.State == sdl.RELEASED && drag == button {
drag = 255
}
if e.State == sdl.PRESSED && button == sdl.BUTTON_RIGHT {
GrabCursor()
}
// ray cast testing
if e.State == sdl.PRESSED && button == sdl.BUTTON_LEFT {
dir_cs := GetMouseDirection(window, int(e.X), int(e.Y))
out, hit := RayCastInCameraSpace(gs, dir_cs)
if hit {
n := helpers.Vector(gs.World.HeightMap.Normal2f(out[0], out[1]))
debug.Color(mgl.Vec4{0, 1, 0, 1})
debug.Line(out, out.Add(n))
}
}
case *sdl.KeyDownEvent:
switch e.Keysym.Scancode {
case sdl.SCANCODE_RETURN:
GrabCursor()
case sdl.SCANCODE_SPACE:
case sdl.SCANCODE_ESCAPE:
running = false
}
case *sdl.KeyUpEvent:
}
}
}
if sdl.GetRelativeMouseMode() {
x, y, _ := sdl.GetRelativeMouseState()
inp.Rotate[0] = -float32(y) / 500
inp.Rotate[1] = -float32(x) / 500
}
keyState := sdl.GetKeyboardState()
if keyState[sdl.SCANCODE_E] == 1 {
inp.Move[2] -= 1
}
if keyState[sdl.SCANCODE_D] == 1 {
inp.Move[2] += 1
}
if keyState[sdl.SCANCODE_S] == 1 {
inp.Move[0] -= 1
}
if keyState[sdl.SCANCODE_F] == 1 {
inp.Move[0] += 1
}
if keyState[sdl.SCANCODE_R] == 1 {
inp.Rotate[2] -= 0.01
}
if keyState[sdl.SCANCODE_W] == 1 {
inp.Rotate[2] += 0.01
}
x, y, button_state := sdl.GetMouseState()
if button_state&sdl.BUTTON_LEFT != 0 {
dir_cs := GetMouseDirection(window, x, y)
out, hit := RayCastInCameraSpace(gs, dir_cs)
if hit {
heightMap := gs.World.HeightMap
heightMap.Bump(mgl.Vec2{out[0], out[1]}, 3)
}
}
gs.World.Player.Input = inp
return running
}