// Create is the startup asset creation.
func (kc *kctag) Create(eng vu.Eng, s *vu.State) {
top := eng.Root().NewPov()
view := top.NewView()
view.SetUI()
kc.ui = view.Cam()
kc.positions = kc.keyPositions()
// Create the keyboard image.
kc.kb = top.NewPov().SetScale(900, 255, 0).SetLocation(450, 100+85, 0)
kc.kb.NewModel("uv").LoadMesh("icon").AddTex("keyboard")
// Pressed key focus
kc.focus = top.NewPov().SetScale(50, 50, 0)
kc.focus.NewModel("uv").LoadMesh("icon").AddTex("particle")
// Place the key symbols over the keys.
font := "lucidiaSu18"
fontColour := "lucidiaSu18Black"
for code, key := range kc.positions { // map key is key code, map value is key struct
if char := vu.Keysym(code); char > 0 {
cx, cy := key.location()
letter := top.NewPov().SetLocation(cx, cy, 0)
model := letter.NewModel("uv")
model.AddTex(fontColour).LoadFont(font).SetPhrase(string(char))
}
}
// Have a lighter default background.
eng.SetColor(0.45, 0.45, 0.45, 1)
kc.resize(s.W, s.H)
}
// Create is the engine callback for initial asset creation.
func (sg *sgtag) Create(eng vu.Eng, s *vu.State) {
sg.run = 10 // move so many cubes worth in one second.
sg.spin = 270 // spin so many degrees in one second.
sg.cam = eng.Root().NewCam()
sg.cam.SetPerspective(60, float64(800)/float64(600), 0.1, 50)
sg.cam.SetLocation(0, 0, 6)
sg.tr = newTrooper(eng, 1)
// initialize the reactions
sg.reacts = map[int]inputHandler{
vu.K_W: sg.forward,
vu.K_A: sg.left,
vu.K_S: sg.back,
vu.K_D: sg.right,
vu.K_Equal: sg.attach,
vu.K_Minus: sg.detach,
vu.K_0: func(i *vu.Input, down int) { sg.setTr(down, 0) },
vu.K_1: func(i *vu.Input, down int) { sg.setTr(down, 1) },
vu.K_2: func(i *vu.Input, down int) { sg.setTr(down, 2) },
vu.K_3: func(i *vu.Input, down int) { sg.setTr(down, 3) },
vu.K_4: func(i *vu.Input, down int) { sg.setTr(down, 4) },
vu.K_5: func(i *vu.Input, down int) { sg.setTr(down, 5) },
vu.K_P: sg.stats,
}
eng.SetColor(0.1, 0.1, 0.1, 1.0)
}
// Create is the engine callback for initial asset creation.
func (rl *rltag) Create(eng vu.Eng, s *vu.State) {
rl.ww, rl.wh = 800, 600
rl.floors = make(map[int]*floor)
rl.setLevel(eng, vu.K_1)
eng.SetColor(0.15, 0.15, 0.15, 1)
return
}
// Create is the startup asset creation.
func (sm *smtag) Create(eng vu.Eng, s *vu.State) {
scene := eng.Root().NewPov()
sm.cam = scene.NewCam()
// need a light for shadows.
sm.sun = scene.NewPov().SetLocation(0, 0, 0)
sm.sun.NewLight().SetColour(0.8, 0.8, 0.8)
// create a scene that will render a shadow map.
sm.cam = scene.NewCam()
sm.cam.SetLocation(0, 0, 10)
sm.cam.SetPerspective(60, float64(s.W)/float64(s.H), 0.1, 50)
// create a few objects that cast shadows.
sm.cube = scene.NewPov().SetLocation(-1, -1, -4)
sm.cube.NewModel("gouraud").LoadMesh("box").LoadMat("gray").CastShadow()
sm.cube.Spin(45, 45, 0)
sm.sphere = scene.NewPov().SetLocation(1, 1, -4)
sm.sphere.NewModel("gouraud").LoadMesh("sphere").LoadMat("red").CastShadow()
// create a ground block to show shadows.
ground := scene.NewPov().SetLocation(0, 0, -20).SetScale(50, 50, 5)
model := ground.NewModel("shadow").LoadMesh("box").LoadMat("gray").HasShadows()
model.AddTex("tile")
}
// Update is the regular engine callback.
func (bb *bbtag) Update(eng vu.Eng, in *vu.Input, s *vu.State) {
run := 10.0 // move so many cubes worth in one second.
spin := 270.0 // spin so many degrees in one second.
if in.Resized {
bb.resize(s.W, s.H)
}
dt := in.Dt
for press, _ := range in.Down {
switch press {
case vu.K_W:
bb.cam.Move(0, 0, dt*-run, bb.cam.Lookxz())
case vu.K_S:
bb.cam.Move(0, 0, dt*run, bb.cam.Lookxz())
case vu.K_Q:
bb.cam.Move(dt*-run, 0, 0, bb.cam.Lookxz())
case vu.K_E:
bb.cam.Move(dt*run, 0, 0, bb.cam.Lookxz())
case vu.K_A:
bb.cam.AdjustYaw(dt * spin)
case vu.K_D:
bb.cam.AdjustYaw(dt * -spin)
case vu.K_T:
eng.Shutdown()
}
}
// Use screen coordinates from world coordinates.
if sx, sy := bb.cam.Screen(5, 2, -15, s.W, s.H); sx == -1 {
bb.screenText.SetVisible(false)
} else {
bb.screenText.SetVisible(true)
bb.screenText.SetLocation(float64(sx), float64(sy), 0)
}
}
// Create is the engine callback for initial asset creation.
func (rl *rltag) Create(eng vu.Eng, s *vu.State) {
rl.run = 5 // move so many cubes worth in one second.
rl.spin = 270 // spin so many degrees in one second.
rl.ww, rl.wh = 800, 600
rl.floors = make(map[int]*floor)
rl.setLevel(eng, vu.K_1)
eng.SetColor(0.15, 0.15, 0.15, 1)
return
}
// Create is the engine callback for initial asset creation.
func (tm *tmtag) Create(eng vu.Eng, s *vu.State) {
tm.ww, tm.wh = s.W, s.H
view := eng.Root().NewView()
tm.cam = view.Cam()
tm.cam.SetOrthographic(0, float64(tm.ww), 0, float64(tm.wh), 0, 50)
sun := eng.Root().NewPov().SetLocation(0, 5, 0)
sun.NewLight().SetColour(0.4, 0.7, 0.9)
// create the world surface.
seed := int64(123)
patchSize := 128
tm.world = land.New(1, patchSize, seed)
worldTile := tm.world.NewTile(1, 0, 0)
textureRatio := 256.0 / 1024.0
tm.surface = vu.NewSurface(patchSize, patchSize, 16, float32(textureRatio), 10)
// create a separate surface for generating initial land textures.
emap := land.New(1, patchSize, seed-1)
etile := emap.NewTile(1, 0, 0)
etopo := etile.Topo()
// merge the land height and land texture information into a single surface.
tm.evo = make([][]float64, patchSize)
for x := range tm.evo {
tm.evo[x] = make([]float64, patchSize)
}
numTextures := 3.0
pts := tm.surface.Pts()
topo := worldTile.Topo()
for x := range topo {
for y := range topo[x] {
pts[x][y].Height = float32(topo[x][y])
evolution := (etopo[x][y] + 1) * 0.5 * numTextures // (-1,1 map to 0-2), map to 0-3
pts[x][y].Tindex = int(evolution)
pts[x][y].Blend = float32(evolution) - float32(int(evolution))
tm.evo[x][y] = evolution // remember for later.
}
}
// Add a rendering component for the surface data.
scale := 10.0
tm.ground = eng.Root().NewPov().SetLocation(0, -300, -10).SetScale(scale, scale, 1)
tm.gm = tm.ground.NewModel("land").AddTex("land")
tm.gm.LoadMat("land").SetUniform("ratio", textureRatio)
tm.gm.NewMesh("land")
tm.surface.Update(tm.gm, 0, 0)
// Add water planes.
tm.ocean = eng.Root().NewPov()
tm.ocean.SetLocation(256, 0, -10.5)
tm.ocean.SetScale(float64(tm.ww), float64(tm.wh), 1)
tm.ocean.NewModel("alpha").LoadMesh("plane").LoadMat("blue2")
tm.coast = eng.Root().NewPov().SetLocation(256, 0, -10)
tm.coast.SetScale(float64(tm.ww), float64(tm.wh), 1)
tm.coast.NewModel("alpha").LoadMesh("plane").LoadMat("blue")
return
}
// Create is the engine callback for initial asset creation.
func (cr *crtag) Create(eng vu.Eng, s *vu.State) {
cr.run = 10 // move so many cubes worth in one second.
cr.spin = 270 // spin so many degrees in one second.
cr.top = eng.Root().NewPov()
sun := cr.top.NewPov().SetLocation(0, 10, 10)
sun.NewLight().SetColour(0.8, 0.8, 0.8)
cr.view = cr.top.NewView()
cr.cam = cr.view.Cam()
cr.cam.SetPerspective(60, float64(800)/float64(600), 0.1, 500)
cr.cam.SetLocation(0, 10, 25)
// load the static slab.
slab := cr.top.NewPov().SetScale(50, 50, 50).SetLocation(0, -25, 0)
slab.NewBody(vu.NewBox(25, 25, 25))
slab.SetSolid(0, 0.4)
slab.NewModel("gouraud").LoadMesh("cube").LoadMat("floor")
// create a single moving body.
useBalls := true // Flip to use boxes instead of spheres.
cr.striker = cr.top.NewPov()
cr.striker.SetLocation(15, 15, 0) // -5, 15, -3
if useBalls {
cr.getBall(cr.striker)
} else {
cr.getBox(cr.striker)
cr.striker.SetRotation(&lin.Q{X: 0.1825742, Y: 0.3651484, Z: 0.5477226, W: 0.7302967})
}
cr.striker.Model().SetColour(rand.Float64(), rand.Float64(), rand.Float64())
// create a block of physics bodies.
cubeSize := 3
startX := -5 - cubeSize/2
startY := -5
startZ := -3 - cubeSize/2
for k := 0; k < cubeSize; k++ {
for i := 0; i < cubeSize; i++ {
for j := 0; j < cubeSize; j++ {
bod := cr.top.NewPov()
lx := float64(2*i + startX)
ly := float64(20 + 2*k + startY)
lz := float64(2*j + startZ)
bod.SetLocation(lx, ly, lz)
if useBalls {
cr.getBall(bod)
} else {
cr.getBox(bod)
}
}
}
}
// set non default engine state.
eng.SetColor(0.15, 0.15, 0.15, 1)
rand.Seed(time.Now().UTC().UnixNano())
}
// create the game screens before the main action/update loop is started.
func (mp *bampf) Create(eng vu.Eng, s *vu.State) {
rand.Seed(time.Now().UnixNano())
mp.eng = eng
mp.ani = &animator{}
mp.setMute(mp.mute)
mp.eventq = list.New()
mp.createScreens(s.W, s.H)
mp.state = mp.choosing
mp.active = mp.launch
mp.active.activate(screenActive)
eng.SetColor(1, 1, 1, 1) // White as default background.
}
// Create is the engine callback for initial asset creation.
func (fm *fmtag) Create(eng vu.Eng, s *vu.State) {
fm.view = eng.Root().NewView()
fm.view.SetUI()
eng.SetColor(0.95, 0.95, 0.95, 1)
// create the panel layout examples.
fm.layouts = append(fm.layouts, fm.simpleLayout(eng, s.W, s.H))
fm.layouts = append(fm.layouts, fm.spanLayout(eng, s.W, s.H))
fm.layouts = append(fm.layouts, fm.grabLayout(eng))
fm.layouts = append(fm.layouts, fm.largeLayout(eng, s.W, s.H))
fm.layouts = append(fm.layouts, fm.doubleLayout(eng))
fm.layouts[fm.example].setVisible(true)
// set non default engine state.
fm.resize(s.W, s.H)
}
// newHud creates all the various parts of the heads up display.
func newHud(eng vu.Eng, sentryCount, wx, wy, ww, wh int) *hud {
hd := &hud{}
hd.root = eng.Root().NewPov()
hd.view = hd.root.NewView()
hd.view.SetUI()
hd.cam = hd.view.Cam()
hd.setSize(wx, wy, ww, wh)
// create the HUD parts.
hd.pl = newPlayer(hd.root, hd.w, hd.h)
hd.xp = newXpbar(hd.root, hd.w, hd.h)
hd.mm = newMinimap(eng.Root().NewPov(), sentryCount)
hd.ce = hd.cloakingEffect(hd.root)
hd.te = hd.teleportEffect(hd.root)
hd.ee = hd.energyLossEffect(hd.root)
hd.resize(hd.w, hd.h)
return hd
}
// Create is the startup asset creation.
func (bb *bbtag) Create(eng vu.Eng, s *vu.State) {
bb.run = 10 // move so many cubes worth in one second.
bb.spin = 270 // spin so many degrees in one second.
top := eng.Root().NewPov()
view := top.NewView()
bb.cam = view.Cam()
bb.cam.SetLocation(0.5, 2, 2.5)
sun := top.NewPov().SetLocation(0, 3, -3)
sun.NewLight().SetColour(0.4, 0.7, 0.9)
// Load the floor model.
floor := top.NewPov()
floor.NewModel("gouraud").LoadMesh("floor").LoadMat("floor")
// Create a single image from multiple textures using a shader.
c4 := top.NewPov().SetLocation(0.5, 2, -1).SetScale(0.25, 0.25, 0.25)
model := c4.NewModel("spinball").LoadMesh("billboard")
model.AddTex("core").AddTex("core").AddTex("halo").AddTex("halo")
model.SetAlpha(0.4)
// Try banner text with the 3D scene perspective camera.
font := "lucidiaSu22"
banner := top.NewPov().SetScale(0.1, 0.1, 0.1).SetLocation(-10, 3, -15)
banner.NewModel("uv").AddTex(font + "White").LoadFont(font).SetPhrase("Floating Text")
// Try billboard banner text with the 3D scene perspective camera.
banner = top.NewPov().SetScale(0.025, 0.025, 0.025).SetLocation(-10, 2, -15)
banner.NewModel("bb").AddTex(font + "White").LoadFont(font).SetPhrase("Billboard Text")
// Banner text with an ortho overlay.
v2D := eng.Root().NewPov()
view2D := v2D.NewView()
view2D.SetUI()
bb.ui = view2D.Cam()
// 2D static location.
banner = v2D.NewPov().SetLocation(100, 100, 0)
banner.NewModel("uv").AddTex(font + "White").LoadFont(font).SetPhrase("Overlay Text")
// 3D world to 2D screen location.
bb.screenText = v2D.NewPov()
bb.screenText.NewModel("uv").AddTex(font + "White").LoadFont(font).SetPhrase("Screen Text")
bb.resize(s.W, s.H)
}
// Create is the engine callback for initial asset creation.
func (ff *fftag) Create(eng vu.Eng, s *vu.State) {
rand.Seed(time.Now().UTC().UnixNano())
// create the overlay
ff.top = eng.Root().NewPov()
view := ff.top.NewView()
view.SetUI()
ff.cam = view.Cam()
ff.mmap = ff.top.NewPov().SetScale(10, 10, 0)
ff.mmap.SetLocation(30, 30, 0)
// populate the map
ff.msize = 69
ff.plan = grid.New(grid.ROOMS_SKIRMISH)
ff.plan.Generate(ff.msize, ff.msize)
width, height := ff.plan.Size()
for x := 0; x < width; x++ {
for y := 0; y < height; y++ {
if ff.plan.IsOpen(x, y) {
block := ff.mmap.NewPov()
block.SetLocation(float64(x), float64(y), 0)
block.NewModel("uv").LoadMesh("icon").AddTex("wall")
ff.spots = append(ff.spots, ff.id(x, y))
}
}
}
// populate chasers and a goal.
numChasers := 30
for cnt := 0; cnt < numChasers; cnt++ {
chaser := ff.mmap.NewPov()
chaser.NewModel("uv").LoadMesh("icon").AddTex("token")
ff.chasers = append(ff.chasers, chaser)
}
ff.goal = ff.mmap.NewPov()
ff.goal.NewModel("uv").LoadMesh("icon").AddTex("goal")
ff.flow = grid.NewFlow(ff.plan) // flow field for the given plan.
ff.resetLocations()
// set non default engine state.
eng.SetColor(0.15, 0.15, 0.15, 1)
ff.resize(s.W, s.H)
}
// Called once to create the visual parts of a panel.
func (lo *layout) visualize(eng vu.Eng) {
lo.top = eng.Root().NewPov()
lo.setVisible(false)
lo.sects = make([]vu.Pov, len(lo.form.Sections()))
lo.labels = make([]vu.Pov, len(lo.form.Sections()))
for cnt, sect := range lo.form.Sections() {
// place a box at the section location.
lo.sects[cnt] = lo.top.NewPov()
lo.sects[cnt].NewModel("uv").LoadMesh("icon").AddTex("cell")
// place the cell name in the middle of the cell.
lo.labels[cnt] = lo.top.NewPov()
model := lo.labels[cnt].NewModel("uv").AddTex("lucidiaSu16Black")
if sect.Label() == "" {
model.LoadFont("lucidiaSu16").SetPhrase("-")
} else {
model.LoadFont("lucidiaSu16").SetPhrase(sect.Label())
}
}
}
// Update is the regular engine callback.
func (tt *totex) Update(eng vu.Eng, in *vu.Input, s *vu.State) {
spin := 270.0 // spin so many degrees in one second.
if in.Resized {
tt.resize(s.W, s.H)
}
dt := in.Dt
for press, _ := range in.Down {
switch press {
case vu.K_Q:
tt.frame.Spin(0, dt*-spin, 0)
case vu.K_E:
tt.frame.Spin(0, dt*+spin, 0)
case vu.K_A:
tt.monkey.Spin(0, dt*-spin, 0)
case vu.K_D:
tt.monkey.Spin(0, dt*+spin, 0)
case vu.K_T:
eng.Shutdown()
}
}
}
// Create is the engine callback for initial asset creation.
func (ps *pstag) Create(eng vu.Eng, s *vu.State) {
ps.run = 10 // move so many cubes worth in one second.
ps.spin = 270 // spin so many degrees in one second.
ps.live = []*vu.EffectParticle{}
ps.random = rand.New(rand.NewSource(time.Now().UTC().UnixNano()))
view := eng.Root().NewView()
ps.cam = view.Cam()
ps.cam.SetPerspective(60, float64(800)/float64(600), 0.1, 50)
ps.cam.SetLocation(0, 0, 2.5)
// A GPU/shader based particle example using a particle shader.
gpu := eng.Root().NewPov()
gpu.SetVisible(false)
m := gpu.NewModel("particle").AddTex("particle")
m.NewMesh("gpu").SetDrawMode(vu.POINTS).SetDepth(false)
ps.makeParticles(m)
ps.effects = append(ps.effects, gpu)
// A CPU/shader based particle example using an effect shader.
cpu := eng.Root().NewPov()
cpu.SetVisible(false)
m = cpu.NewModel("effect").AddTex("particle").SetDrawMode(vu.POINTS)
m.SetEffect(ps.fall, 250)
ps.effects = append(ps.effects, cpu)
// A jet engine exhaust attempt.
// FUTURE: update textures to look like engine exhaust.
jet := eng.Root().NewPov().SetLocation(0, -1, 0)
jet.SetVisible(false)
m = jet.NewModel("exhaust").AddTex("exhaust").SetDrawMode(vu.POINTS)
m.SetEffect(ps.vent, 40)
ps.effects = append(ps.effects, jet)
// Make the first particle effect visible to kick things off.
ps.effect = ps.effects[ps.index]
ps.effect.SetVisible(true)
// Non default engine state. Have a lighter default background.
eng.SetColor(0.15, 0.15, 0.15, 1)
}
// Create is the engine callback for initial asset creation.
func (lt *lttag) Create(eng vu.Eng, s *vu.State) {
lt.run = 10 // move so many cubes worth in one second.
lt.spin = 270 // spin so many degrees in one second.
top := eng.Root().NewPov()
view := top.NewView()
lt.cam3D = view.Cam()
lt.cam3D.SetLocation(0.5, 2, 0.5)
lt.sun = top.NewPov().SetLocation(0, 2.5, -1.75).SetScale(0.05, 0.05, 0.05)
lt.sun.NewLight().SetColour(0.4, 0.7, 0.9)
// Model at the light position.
lt.sun.NewModel("solid").LoadMesh("sphere").LoadMat("sphere")
// Create solid spheres to test the lighting shaders.
c4 := top.NewPov().SetLocation(-0.5, 2, -2).SetScale(0.25, 0.25, 0.25)
c4.NewModel("diffuse").LoadMesh("sphere").LoadMat("floor")
c5 := top.NewPov().SetLocation(0.5, 2, -2).SetScale(0.25, 0.25, 0.25)
c5.NewModel("gouraud").LoadMesh("sphere").LoadMat("floor")
c6 := top.NewPov().SetLocation(1.5, 2, -2).SetScale(0.25, 0.25, 0.25)
c6.NewModel("phong").LoadMesh("sphere").LoadMat("floor")
lt.resize(s.W, s.H)
}
// Create is the startup asset creation.
func (tt *totex) Create(eng vu.Eng, s *vu.State) {
// create a scene that will render the blender monkey model to a texture.
scene0 := eng.Root().NewPov()
tt.cam0 = scene0.NewCam()
scene0.NewLayer() // render scene to texture.
background := scene0.NewPov().SetLocation(0, 0, -10).SetScale(100, 100, 1)
background.NewModel("uv").LoadMesh("icon").AddTex("wall")
tt.monkey = scene0.NewPov().SetLocation(0, 0, -5)
tt.monkey.NewModel("monkey").LoadMesh("monkey").LoadMat("gray")
// create a scene consisting of a single quad. The quad will display
// the rendered texture from scene0. The texture image is flipped from
// normal so reorient it using flipped texture coordinates in flipboard.
scene1 := eng.Root().NewPov()
tt.cam1 = scene1.NewCam()
tt.frame = scene1.NewPov().SetLocation(0, 0, -0.5).SetScale(0.25, 0.25, 0.25)
model := tt.frame.NewModel("uv").LoadMesh("flipboard")
model.UseLayer(scene0.Layer()) // use rendered texture from scene0.
// set camera perspectives and default background colour.
tt.resize(s.W, s.H)
}
// Create is the engine callback for initial asset creation.
func (lt *lttag) Create(eng vu.Eng, s *vu.State) {
top := eng.Root().NewPov()
lt.cam3D = top.NewCam()
lt.cam3D.SetLocation(0.5, 2, 0.5)
lt.sun = top.NewPov().SetLocation(0, 2.5, -1.75).SetScale(0.05, 0.05, 0.05)
lt.sun.NewLight().SetColour(0.4, 0.7, 0.9)
// Model at the light position.
lt.sun.NewModel("solid").LoadMesh("sphere").LoadMat("red")
// Create solid spheres to test the lighting shaders.
c4 := top.NewPov().SetLocation(-0.5, 2, -2).SetScale(0.25, 0.25, 0.25)
c4.NewModel("diffuse").LoadMesh("sphere").LoadMat("gray")
c5 := top.NewPov().SetLocation(0.5, 2, -2).SetScale(0.25, 0.25, 0.25)
c5.NewModel("gouraud").LoadMesh("sphere").LoadMat("gray")
c6 := top.NewPov().SetLocation(1.5, 2, -2).SetScale(0.25, 0.25, 0.25)
c6.NewModel("phong").LoadMesh("sphere").LoadMat("gray")
// place and angle a large flat box behind the spheres.
wall := top.NewPov().SetLocation(0, 2, -10).SetScale(5, 5, 5)
wall.Spin(45, 45, 0)
wall.NewModel("diffuse").LoadMesh("box").LoadMat("gray")
lt.resize(s.W, s.H)
}
// Create is the engine callback for initial asset creation.
func (ma *matag) Create(eng vu.Eng, s *vu.State) {
ma.run = 10 // move so many cubes worth in one second.
ma.spin = 270 // spin so many degrees in one second.
ma.top = eng.Root().NewPov()
ma.view = ma.top.NewView()
ma.cam = ma.view.Cam()
ma.cam.SetPerspective(60, float64(800)/float64(600), 0.1, 50)
ma.cam.SetLocation(0, 3, 10)
// load any available IQM/E models. The loaded model data is fed to
// the animation capable shader "anim".
for _, modelFile := range ma.modelFiles() {
pov := ma.top.NewPov()
pov.SetScale(-1, 1, 1)
if modelFile == "runner" {
pov.SetScale(-3, 3, 3) // Runner is a bit small.
}
pov.Spin(-90, 0, 0) // Have the model face the camera.
pov.SetVisible(false) // Hide initially.
// Most IQ* files are expected to be animated.
// Use a "uv" shader to handle IQ* files without animations.
pov.NewModel("anim").LoadAnim(modelFile)
ma.models = append(ma.models, pov)
ma.names = append(ma.names, modelFile)
}
ma.model = ma.models[ma.index] // should always have at least one.
ma.model.SetVisible(true)
// Have a lighter default background.
eng.SetColor(0.15, 0.15, 0.15, 1)
// Create a banner to show the model name.
top2D := eng.Root().NewPov()
view2D := top2D.NewView()
view2D.SetUI()
ma.ui = view2D.Cam()
ma.ui.SetOrthographic(0, float64(s.W), 0, float64(s.H), 0, 10)
title := top2D.NewPov()
title.SetLocation(10, 5, 0)
ma.title = title.NewModel("uv").AddTex("lucidiaSu22White").LoadFont("lucidiaSu22")
ma.title.SetPhrase(" ")
}
// Create is the engine callback for initial asset creation.
func (rc *rctag) Create(eng vu.Eng, s *vu.State) {
top := eng.Root().NewPov()
view := top.NewView()
rc.cam = view.Cam()
rc.cam.SetPitch(45) // Tilt the camera and
rc.cam.SetLocation(0, -14, 14) // ...point directly at 0, 0, 0
rc.gsize = 32 // 4x8 ie. image is 4x4 grid, tile.obj is oversampled by 8.
// The ray cast target is a plane displaying the image of a 32x32 grid.
rc.fsize = 10.0 // 2x2 plane to 20x20 plane.
rc.floor = top.NewPov() // create the floor.
rc.floor.NewBody(vu.NewPlane(0, 0, -1)) // the floors ray intersect shape.
rc.floor.SetScale(rc.fsize, rc.fsize, 0) // scale the model to fsize.
m := rc.floor.NewModel("uv").LoadMesh("tile") // put the image on the floor.
m.AddTex("tile").SetTexMode(0, vu.TEX_REPEAT)
// create a selected tile tracker.
rc.hilite = top.NewPov().SetScale(0.625, 0.625, 0.001) // scale to cover a single tile.
rc.hilite.NewModel("uv").LoadMesh("icon").AddTex("image")
// Put spheres at the floor corners.
rc.s0 = rc.makeSphere(top, 10, 10, 0, 1, 0, 0)
rc.s1 = rc.makeSphere(top, -10, 10, 0, 0, 1, 0)
rc.s2 = rc.makeSphere(top, 10, -10, 0, 0, 0, 1)
rc.s3 = rc.makeSphere(top, -10, -10, 0, 1, 1, 0)
// Add a banner to show the currently selected grid location.
top2D := eng.Root().NewPov()
view2D := top2D.NewView()
view2D.SetUI()
rc.ui = view2D.Cam()
rc.banner = top2D.NewPov()
rc.banner.SetLocation(100, 100, 0)
rc.banner.SetVisible(false)
m = rc.banner.NewModel("uv").AddTex("lucidiaSu22White")
m.LoadFont("lucidiaSu22").SetPhrase("Overlay Text")
// set non default engine state.
eng.SetColor(0.2, 0.2, 0.2, 1.0)
rc.resize(s.W, s.H)
}
// Update is the regular engine callback.
func (rl *rltag) Update(eng vu.Eng, in *vu.Input, s *vu.State) {
run := 5.0 // move so many cubes worth in one second.
spin := 270.0 // spin so many degrees in one second.
if in.Resized {
rl.resize(s.W, s.H)
}
// pre-process user presses.
// reduce individual move amounts for multiple move requests.
dt := in.Dt
moveDelta := dt * 2
for press, _ := range in.Down {
switch press {
case vu.K_W, vu.K_S, vu.K_Q, vu.K_E:
moveDelta *= 0.5
}
}
// process user presses.
for press, down := range in.Down {
switch press {
case vu.K_W:
rl.flr.cam.Move(0, 0, moveDelta*-run, rl.flr.cam.Lookxz())
rl.arrow.SetLocation(rl.flr.cam.Location())
case vu.K_S:
rl.flr.cam.Move(0, 0, moveDelta*run, rl.flr.cam.Lookxz())
rl.arrow.SetLocation(rl.flr.cam.Location())
case vu.K_Q:
rl.flr.cam.Move(moveDelta*-run, 0, 0, rl.flr.cam.Lookxz())
rl.arrow.SetLocation(rl.flr.cam.Location())
case vu.K_E:
rl.flr.cam.Move(moveDelta*run, 0, 0, rl.flr.cam.Lookxz())
rl.arrow.SetLocation(rl.flr.cam.Location())
case vu.K_A:
rl.flr.cam.AdjustYaw(dt * spin)
rl.arrow.SetRotation(rl.flr.cam.Lookxz())
case vu.K_D:
rl.flr.cam.AdjustYaw(dt * -spin)
rl.arrow.SetRotation(rl.flr.cam.Lookxz())
case vu.K_1, vu.K_2, vu.K_3, vu.K_4, vu.K_5, vu.K_6, vu.K_7, vu.K_8, vu.K_9, vu.K_0:
if down == 1 {
rl.setLevel(eng, press)
}
}
}
// show some stats to see the effectiveness of culling.
allModels, allVerts := eng.Modelled()
renModels, renVerts := eng.Rendered()
modelStats := fmt.Sprintf("%d models culled to %d", allModels, renModels)
vertexStats := fmt.Sprintf("%d verticies culled to %d", allVerts, renVerts)
rl.flr.modelStats.SetPhrase(modelStats)
rl.flr.vertexStats.SetPhrase(vertexStats)
// http://stackoverflow.com/questions/87304/calculating-frames-per-second-in-a-game
t := eng.Usage()
rl.elapsed += t.Elapsed
rl.update += t.Update
rl.renders += t.Renders
if in.Ut%50 == 0 { // average over 50 updates.
fps := float64(rl.renders) / rl.elapsed.Seconds()
update := rl.update.Seconds() / 50.0 * 1000
timings := fmt.Sprintf("FPS %2.2f Update %3.2fms", fps, update)
rl.flr.times.SetPhrase(timings)
rl.renders = 0
rl.elapsed = 0
rl.update = 0
}
}
// setLevel switches to the indicated level.
func (rl *rltag) setLevel(eng vu.Eng, keyCode int) {
if _, ok := rl.floors[keyCode]; !ok {
var gridSizes = map[int]int{
vu.K_1: 15,
vu.K_2: 21,
vu.K_3: 27,
vu.K_4: 33,
vu.K_5: 39,
vu.K_6: 45,
vu.K_7: 51,
vu.K_8: 57,
vu.K_9: 63,
vu.K_0: 69,
}
var gridType = map[int]grid.Grid{
vu.K_1: grid.New(grid.DENSE_SKIRMISH),
vu.K_2: grid.New(grid.DENSE_SKIRMISH),
vu.K_3: grid.New(grid.SPARSE_SKIRMISH),
vu.K_4: grid.New(grid.SPARSE_SKIRMISH),
vu.K_5: grid.New(grid.ROOMS_SKIRMISH),
vu.K_6: grid.New(grid.ROOMS_SKIRMISH),
vu.K_7: grid.New(grid.CAVE),
vu.K_8: grid.New(grid.CAVE),
vu.K_9: grid.New(grid.DUNGEON),
vu.K_0: grid.New(grid.DUNGEON),
}
flr := &floor{}
// create the scene
flr.top = eng.Root().NewPov()
flr.plan = flr.top.NewPov()
flr.cam = flr.plan.NewCam()
flr.cam.SetLocation(1, 0, -1)
flr.cam.SetPerspective(60, float64(rl.ww)/float64(rl.wh), 0.1, 50)
flr.cam.SetCull(vu.NewFrontCull(10))
// create the overlay
flr.mmap = flr.top.NewPov()
flr.ui = flr.mmap.NewCam()
flr.ui.SetUI()
flr.ui.SetView(vu.XZ_XY)
flr.ui.SetOrthographic(0, float64(rl.ww), 0, float64(rl.wh), 0, 20)
flr.mapPart = flr.mmap.NewPov()
flr.mapPart.SetScale(7.5, 7.5, 7.5)
flr.mapPart.SetLocation(20, 0, -20)
// display some rendering statistics.
flr.modelStats = rl.newText(flr.mmap, 0)
flr.vertexStats = rl.newText(flr.mmap, 1)
flr.times = rl.newText(flr.mmap, 2)
// populate the scenes
lsize := gridSizes[keyCode]
flr.layout = gridType[keyCode]
flr.layout.Generate(lsize, lsize)
width, height := flr.layout.Size()
for x := 0; x < width; x++ {
for y := 0; y < height; y++ {
if flr.layout.IsOpen(x, y) {
block := flr.mapPart.NewPov().SetLocation(float64(x), 0, float64(-y))
block.NewModel("alpha").LoadMesh("cube").LoadMat("transparent_gray")
} else {
block := flr.plan.NewPov().SetLocation(float64(x), 0, float64(-y))
block.NewModel("uv").LoadMesh("box").AddTex("tile")
}
}
}
flr.arrow = flr.mapPart.NewPov().SetLocation(flr.cam.Location())
flr.arrow.NewModel("solid").LoadMesh("arrow").LoadMat("transparent_blue")
rl.floors[keyCode] = flr
}
if rl.flr != nil {
rl.flr.plan.SetVisible(false)
rl.flr.mmap.SetVisible(false)
}
rl.flr = rl.floors[keyCode]
rl.flr.plan.SetVisible(true)
rl.flr.mmap.SetVisible(true)
rl.arrow = rl.flr.arrow
}
// newTrooper creates a trooper at the starting size for the given level.
// level 0: 1x1x1 : 1 cube
// level 1: 2x2x2 : 8 edge cubes + 6 panels of 0x0 cubes + 0x0x0 center.
// level 2: 3x3x3 : 20 edge cubes + 6 panels of 1x1 cubes + 1x1x1 center.
// level 3: 4x4x4 : 32 edge cubes + 6 panels of 2x2 cubes + 2x2x2 center.
// ...
func newTrooper(eng vu.Eng, level int) *trooper {
tr := &trooper{}
tr.lvl = level
tr.eng = eng
tr.bits = []box{}
tr.mid = tr.lvl*tr.lvl*tr.lvl*8 - (tr.lvl-1)*(tr.lvl-1)*(tr.lvl-1)*8
tr.top = eng.Root().NewPov()
//
if tr.lvl == 0 {
cube := newCube(tr.top, 0, 0, 0, 1)
cube.edgeSort(1)
tr.bits = append(tr.bits, cube)
return tr
}
// create the panels. These are used in each level but the first.
cubeSize := 1.0 / float64(tr.lvl+1)
centerOffset := cubeSize * 0.5
panelCenter := float64(tr.lvl) * centerOffset
tr.bits = append(tr.bits, newBlock(tr.top, panelCenter, 0.0, 0.0, tr.lvl))
tr.bits = append(tr.bits, newBlock(tr.top, -panelCenter, 0.0, 0.0, tr.lvl))
tr.bits = append(tr.bits, newBlock(tr.top, 0.0, panelCenter, 0.0, tr.lvl))
tr.bits = append(tr.bits, newBlock(tr.top, 0.0, -panelCenter, 0.0, tr.lvl))
tr.bits = append(tr.bits, newBlock(tr.top, 0.0, 0.0, panelCenter, tr.lvl))
tr.bits = append(tr.bits, newBlock(tr.top, 0.0, 0.0, -panelCenter, tr.lvl))
// troopers are made out of cubes and panels.
mx := float64(-tr.lvl)
for cx := 0; cx <= tr.lvl; cx++ {
my := float64(-tr.lvl)
for cy := 0; cy <= tr.lvl; cy++ {
mz := float64(-tr.lvl)
for cz := 0; cz <= tr.lvl; cz++ {
// create the outer edges.
newCells := 0
if (cx == 0 || cx == tr.lvl) && (cy == 0 || cy == tr.lvl) && (cz == 0 || cz == tr.lvl) {
// corner cube
newCells = 1
} else if (cx == 0 || cx == tr.lvl) && (cy == 0 || cy == tr.lvl) ||
(cx == 0 || cx == tr.lvl) && (cz == 0 || cz == tr.lvl) ||
(cy == 0 || cy == tr.lvl) && (cz == 0 || cz == tr.lvl) {
// edge cube
newCells = 2
} else if cx == 0 || cx == tr.lvl || cy == 0 || cy == tr.lvl || cz == 0 || cz == tr.lvl {
// side cubes are added to (controlled by) a panel.
x, y, z := mx*centerOffset, my*centerOffset, mz*centerOffset
if cx == tr.lvl && x > y && x > z {
tr.bits[0].(*block).addCube(x, y, z, float64(cubeSize))
} else if cx == 0 && x < y && x < z {
tr.bits[1].(*block).addCube(x, y, z, float64(cubeSize))
} else if cy == tr.lvl && y > x && y > z {
tr.bits[2].(*block).addCube(x, y, z, float64(cubeSize))
} else if cy == 0 && y < x && y < z {
tr.bits[3].(*block).addCube(x, y, z, float64(cubeSize))
} else if cz == tr.lvl && z > x && z > y {
tr.bits[4].(*block).addCube(x, y, z, float64(cubeSize))
} else if cz == 0 && z < x && z < y {
tr.bits[5].(*block).addCube(x, y, z, float64(cubeSize))
}
}
if newCells > 0 {
x, y, z := mx*centerOffset, my*centerOffset, mz*centerOffset
cube := newCube(tr.top, x, y, z, float64(cubeSize))
cube.edgeSort(newCells)
tr.bits = append(tr.bits, cube)
}
mz += 2
}
my += 2
}
mx += 2
}
tr.addCenter()
return tr
}