func main() {
h := hge.New()
// Set desired system states and initialize HGE
h.SetState(hge.LOGFILE, "tutorial08.log")
h.SetState(hge.FRAMEFUNC, frame)
h.SetState(hge.RENDERFUNC, render)
h.SetState(hge.TITLE, "HGE Tutorial 08 - The Big Calm")
h.SetState(hge.USESOUND, false)
h.SetState(hge.WINDOWED, true)
h.SetState(hge.SCREENWIDTH, SCREEN_WIDTH)
h.SetState(hge.SCREENHEIGHT, SCREEN_HEIGHT)
h.SetState(hge.SCREENBPP, 32)
if err := h.Initiate(); err == nil {
defer h.Shutdown()
fnt = font.New("font1.fnt")
if !InitSimulation() {
// If one of the data files is not found, display an error message and shutdown
fmt.Println("Error: Can't load resources. See log for details.\n")
return
}
h.Start()
}
return
}
func main() {
h = hge.Create(VERSION)
defer h.Release()
// Set desired system states and initialize HGE
h.System_SetState(LOGFILE, "tutorial07.log")
h.System_SetState(FRAMEFUNC, frame)
h.System_SetState(RENDERFUNC, render)
h.System_SetState(TITLE, "HGE Tutorial 07 - Thousand of Hares")
h.System_SetState(USESOUND, false)
h.System_SetState(WINDOWED, true)
h.System_SetState(SCREENWIDTH, SCREEN_WIDTH)
h.System_SetState(SCREENHEIGHT, SCREEN_HEIGHT)
h.System_SetState(SCREENBPP, 32)
if h.System_Initiate() {
defer h.System_Shutdown()
// Load textures
bgtex = h.Texture_Load("bg2.png")
tex = h.Texture_Load("zazaka.png")
if bgtex == nil || tex == nil {
fmt.Println("Error: Can't load bg2.png or zazaka.png\n")
return
}
// Delete created objects and free loaded resources
defer h.Texture_Free(tex)
defer h.Texture_Free(bgtex)
// Load font, create sprites
fnt = font.New("font1.fnt")
spr = sprite.New(tex, 0, 0, 64, 64)
spr.SetHotSpot(32, 32)
bgspr = sprite.New(bgtex, 0, 0, 800, 600)
bgspr.SetBlendMode(BLEND_COLORADD | BLEND_ALPHABLEND | BLEND_NOZWRITE)
bgspr.SetColor(0xFF000000, 0)
bgspr.SetColor(0xFF000000, 1)
bgspr.SetColor(0xFF000040, 2)
bgspr.SetColor(0xFF000040, 3)
// Initialize objects list
objects = 1000
for i := 0; i < MAX_OBJECTS; i++ {
objs[i].x = h.Random_Float(0, SCREEN_WIDTH)
objs[i].y = h.Random_Float(0, SCREEN_HEIGHT)
objs[i].dx = h.Random_Float(-200, 200)
objs[i].dy = h.Random_Float(-200, 200)
objs[i].scale = h.Random_Float(0.5, 2.0)
objs[i].dscale = h.Random_Float(-1.0, 1.0)
objs[i].rot = h.Random_Float(0, Pi*2)
objs[i].drot = h.Random_Float(-1.0, 1.0)
}
setBlend(0)
// Let's rock now!
h.System_Start()
}
}
func main() {
h := New()
defer h.Free()
h.SetState(LOGFILE, "tutorial05.log")
h.SetState(FRAMEFUNC, FrameFunc)
h.SetState(RENDERFUNC, RenderFunc)
h.SetState(TITLE, "HGE Tutorial 05 - Using distortion mesh")
h.SetState(WINDOWED, true)
h.SetState(SCREENWIDTH, 800)
h.SetState(SCREENHEIGHT, 600)
h.SetState(SCREENBPP, 32)
h.SetState(USESOUND, false)
if err := h.Initiate(); err == nil {
defer h.Shutdown()
tex = LoadTexture("texture.jpg")
if tex == nil {
fmt.Println("Error: Can't load texture.jpg")
return
}
defer tex.Free()
dis = dist.New(cols, rows)
dis.SetTexture(tex)
dis.SetTextureRect(0, 0, 512, 512)
dis.SetBlendMode(BLEND_COLORADD | BLEND_ALPHABLEND | BLEND_ZWRITE)
dis.Clear(Dword(0xFF000000))
// Load a font
fnt = font.New("font1.fnt")
if fnt == nil {
fmt.Println("Error: Can't load font1.fnt or font1.png")
return
}
// Let's rock now!
h.Start()
}
}
func main() {
h := hge.New()
h.SetState(hge.LOGFILE, "tutorial06.log")
h.SetState(hge.FRAMEFUNC, frame)
h.SetState(hge.RENDERFUNC, render)
h.SetState(hge.TITLE, "HGE Tutorial 06 - Creating menus")
h.SetState(hge.WINDOWED, true)
h.SetState(hge.SCREENWIDTH, 800)
h.SetState(hge.SCREENHEIGHT, 600)
h.SetState(hge.SCREENBPP, 32)
if err := h.Initiate(); err != nil {
fmt.Println("Error: ", h.GetErrorMessage())
} else {
defer h.Shutdown()
quad.Texture = LoadTexture("bg.png")
if quad.Texture == nil {
fmt.Println("Error loading bg.png")
return
}
snd := NewEffect("menu.ogg")
if snd == nil {
fmt.Println("Error loading menu.ogg")
return
}
cursorTex := LoadTexture("cursor.png")
if cursorTex == nil {
fmt.Println("Error loading cursor.png")
return
}
// Set up the quad we will use for background animation
quad.Blend = BLEND_ALPHABLEND | BLEND_COLORMUL | BLEND_NOZWRITE
for i := 0; i < 4; i++ {
// Set up z-coordinate of vertices
quad.V[i].Z = 0.5
// Set up color. The format of DWORD col is 0xAARRGGBB
quad.V[i].Color = 0xFFFFFFFF
}
quad.V[0].X, quad.V[0].Y = 0, 0
quad.V[1].X, quad.V[1].Y = 800, 0
quad.V[2].X, quad.V[2].Y = 800, 600
quad.V[3].X, quad.V[3].Y = 0, 600
fnt = font.New("font1.fnt")
if fnt == nil {
fmt.Println("Error loading font1.fnt")
return
}
cursor := sprite.New(cursorTex, 0, 0, 32, 32)
GUI = gui.New()
GUI.AddCtrl(NewGUIMenuItem(1, fnt, snd, 400, 200, 0.0, "Play"))
GUI.AddCtrl(NewGUIMenuItem(2, fnt, snd, 400, 240, 0.1, "Options"))
GUI.AddCtrl(NewGUIMenuItem(3, fnt, snd, 400, 280, 0.2, "Instructions"))
GUI.AddCtrl(NewGUIMenuItem(4, fnt, snd, 400, 320, 0.3, "Credits"))
GUI.AddCtrl(NewGUIMenuItem(5, fnt, snd, 400, 360, 0.4, "Exit"))
GUI.SetNavMode(gui.GUI_UPDOWN | gui.GUI_CYCLED)
GUI.SetCursor(&cursor)
GUI.SetFocus(1)
GUI.Enter()
h.Start()
}
}
// An example of using closures
func main() {
func() {
const (
speed = 90.0
friction = 0.98
)
var (
spr sprite.Sprite
fnt *font.Font
par *particle.ParticleSystem
snd *Effect
x = 100.0
y = 100.0
dx = 0.0
dy = 0.0
)
hge := New()
hge.SetState(LOGFILE, "tutorial03.log")
hge.SetState(TITLE, "HGE Tutorial 03 - Using helper classes")
hge.SetState(FPS, 100)
hge.SetState(WINDOWED, true)
hge.SetState(SCREENWIDTH, 800)
hge.SetState(SCREENHEIGHT, 600)
hge.SetState(SCREENBPP, 32)
hge.SetState(FRAMEFUNC, func() int {
dt := float64(Delta())
boom := func() {
pan := int((x - 400) / 4)
pitch := (dx*dx+dy*dy)*0.0005 + 0.2
snd.PlayEx(100, pan, pitch)
}
// Process keys
if NewKey(K_ESCAPE).State() {
return 1
}
if NewKey(K_LEFT).State() {
dx -= speed * dt
}
if NewKey(K_RIGHT).State() {
dx += speed * dt
}
if NewKey(K_UP).State() {
dy -= speed * dt
}
if NewKey(K_DOWN).State() {
dy += speed * dt
}
// Do some movement calculations and collision detection
dx *= friction
dy *= friction
x += dx
y += dy
if x > 784 {
x = 784 - (x - 784)
dx = -dx
boom()
}
if x < 16 {
x = 16 + 16 - x
dx = -dx
boom()
}
if y > 584 {
y = 584 - (y - 584)
dy = -dy
boom()
}
if y < 16 {
y = 16 + 16 - y
dy = -dy
boom()
}
// Update particle system
par.Info.Emission = (int)(dx*dx+dy*dy) * 2
par.MoveTo(x, y)
par.Update(dt)
return 0
})
hge.SetState(RENDERFUNC, func() int {
BeginScene()
Clear(0)
par.Render()
spr.Render(x, y)
fnt.Printf(5, 5, font.TEXT_LEFT, "dt:%.3f\nFPS:%d (constant)", Delta(), GetFPS())
EndScene()
return 0
})
if err := hge.Initiate(); err == nil {
defer hge.Shutdown()
snd = NewEffect("menu.ogg")
tex := LoadTexture("particles.png")
if snd == nil || tex == nil {
fmt.Printf("Error: Can't load one of the following files:\nmenu.ogg, particles.png, font1.fnt, font1.png, trail.psi\n")
return
}
spr = sprite.New(tex, 96, 64, 32, 32)
spr.SetColor(0xFFFFA000)
spr.SetHotSpot(16, 16)
if fnt = font.New("font1.fnt"); fnt == nil {
fmt.Println("Error loading font1.fnt")
return
}
spt := sprite.New(tex, 32, 32, 32, 32)
spt.SetBlendMode(BLEND_COLORMUL | BLEND_ALPHAADD | BLEND_NOZWRITE)
spt.SetHotSpot(16, 16)
par = particle.New("trail.psi", spt)
if par == nil {
fmt.Println("Error loading trail.psi")
return
}
par.Fire()
hge.Start()
}
}()
for i := 0; i < 10; i++ {
fmt.Println("Sleeping")
time.Sleep(1 * time.Second)
runtime.GC()
}
}
func main() {
h := hge.New()
h.SetState(hge.LOGFILE, "tutorial04.log")
h.SetState(hge.FRAMEFUNC, FrameFunc)
h.SetState(hge.RENDERFUNC, RenderFunc)
h.SetState(hge.GFXRESTOREFUNC, RestoreFunc)
h.SetState(hge.TITLE, "HGE Tutorial 04 - Using render targets")
h.SetState(hge.FPS, 100)
h.SetState(hge.WINDOWED, true)
h.SetState(hge.SCREENWIDTH, 800)
h.SetState(hge.SCREENHEIGHT, 600)
h.SetState(hge.SCREENBPP, 32)
if err := h.Initiate(); err == nil {
defer h.Shutdown()
snd = NewEffect("menu.ogg")
tex = LoadTexture("particles.png")
if snd == nil || tex == nil {
// If one of the data files is not found, display
// an error message and shutdown.
fmt.Printf("Error: Can't load one of the following files:\nmenu.ogg, particles.png, font1.fnt, font1.png, trail.psi\n")
return
}
// Delete created objects and free loaded resources
defer snd.Free()
defer tex.Free()
spr = sprite.New(tex, 96, 64, 32, 32)
spr.SetColor(0xFFFFA000)
spr.SetHotSpot(16, 16)
fnt = font.New("font1.fnt")
if fnt == nil {
fmt.Println("Error: Can't load font1.fnt or font1.png")
return
}
spt = sprite.New(tex, 32, 32, 32, 32)
spt.SetBlendMode(BLEND_COLORMUL | BLEND_ALPHAADD | BLEND_NOZWRITE)
spt.SetHotSpot(16, 16)
par = particle.New("trail.psi", spt)
if par == nil {
fmt.Println("Error: Cannot load trail.psi")
return
}
par.Fire()
// Create a render target and a sprite for it
target = NewTarget(512, 512, false)
defer target.Free()
tar = sprite.New(target.Texture(), 0, 0, 512, 512)
tar.SetBlendMode(BLEND_COLORMUL | BLEND_ALPHAADD | BLEND_NOZWRITE)
// Let's rock now!
h.Start()
}
}
