func SetDrawColor(r *sdl.Renderer, color [4]uint8) {
r.SetDrawColor(
color[0],
color[1],
color[2],
color[3])
}
//TODO Make sdl_tff work!
func (menuGeneratorInfo *MenuGeneratorInfo) GenerateMenuShellOneColumn(renderer *sdl.Renderer, x, y, dx, dy int32) Menu {
background, err := renderer.CreateTextureFromSurface(menuGeneratorInfo.menuBackground)
if err != nil {
panic(err)
}
buttonCount := len(menuGeneratorInfo.buttonTexts)
menuItems := make([]*MenuItem, buttonCount)
highlightedBackground, notHighlightedBackground, srcRects, FrameLength := menuGeneratorInfo.menuItemAnimation.Generate(renderer)
TEXTSURFACE := sdl.Texture{}
TEXTRECT := sdl.Rect{0, 0, 0, 0}
for i := 0; i < buttonCount; i++ {
currentRect := sdl.Rect{x, y + dy*int32(i), dx, dy}
currentRects := make([]*sdl.Rect, len(srcRects))
for j := 0; j < len(srcRects); j++ {
currentRects[j] = ¤tRect
}
previous := (i - 1 + buttonCount) % buttonCount
next := (i + 1) % buttonCount
menuAction := MenuAction{nil, func(menuInfo *MenuInfo, menuItem *MenuItem) int { return previous }, func(menuInfo *MenuInfo, menuItem *MenuItem) int { return next }, nil, nil}
menuItems[i] = &MenuItem{notHighlightedBackground, highlightedBackground, srcRects, currentRects, &TEXTSURFACE, &TEXTRECT, menuAction, FrameLength}
}
return Menu{background, menuItems, nil}
}
func (t *TextEl) Bake(renderer *sdl.Renderer) (*sdl.Texture, int32, int32) {
surface, _ := t.Font.RenderUTF8_Solid(t.Content, t.Color)
defer surface.Free()
txtr, _ := renderer.CreateTextureFromSurface(surface)
//defer txtr.Destroy()
return txtr, surface.W, surface.H
}
func main() {
var window *sdl.Window
var renderer *sdl.Renderer
var event sdl.Event
var running bool
window = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
winWidth, winHeight, sdl.WINDOW_SHOWN)
if window == nil {
fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", sdl.GetError())
os.Exit(1)
}
renderer = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
if renderer == nil {
fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", sdl.GetError())
os.Exit(2)
}
var peepArray []sdl.Event = make([]sdl.Event, 5)
running = true
for running {
sdl.PumpEvents()
numEventsRetrieved := sdl.PeepEvents(peepArray, sdl.PEEKEVENT, sdl.FIRSTEVENT, sdl.LASTEVENT)
if numEventsRetrieved < 0 {
fmt.Printf("PeepEvents error: %s\n", sdl.GetError())
} else {
for i := 0; i < numEventsRetrieved; i++ {
fmt.Printf("Event Peeked Value: %v\n", peepArray[i]) // primitive printing of event
}
}
for event = sdl.PollEvent(); event != nil; event = sdl.PollEvent() {
switch t := event.(type) {
case *sdl.QuitEvent:
running = false
case *sdl.MouseMotionEvent:
fmt.Printf("[%d ms] MouseMotion\ttype:%d\tid:%d\tx:%d\ty:%d\txrel:%d\tyrel:%d\n",
t.Timestamp, t.Type, t.Which, t.X, t.Y, t.XRel, t.YRel)
case *sdl.MouseButtonEvent:
fmt.Printf("[%d ms] MouseButton\ttype:%d\tid:%d\tx:%d\ty:%d\tbutton:%d\tstate:%d\n",
t.Timestamp, t.Type, t.Which, t.X, t.Y, t.Button, t.State)
case *sdl.MouseWheelEvent:
fmt.Printf("[%d ms] MouseWheel\ttype:%d\tid:%d\tx:%d\ty:%d\n",
t.Timestamp, t.Type, t.Which, t.X, t.Y)
case *sdl.KeyUpEvent:
fmt.Printf("[%d ms] Keyboard\ttype:%d\tsym:%c\tmodifiers:%d\tstate:%d\trepeat:%d\n",
t.Timestamp, t.Type, t.Keysym.Sym, t.Keysym.Mod, t.State, t.Repeat)
}
}
sdl.Delay(1000 / 30)
}
renderer.Destroy()
window.Destroy()
}
func (d *drawable) Draw(r *sdl.Renderer) {
// Fill
if d.fill {
SetDrawColor(r, d.fill_color)
r.FillRect(&sdl.Rect{d.X, d.Y, d.W, d.H})
}
// Draw bounds
SetDrawColor(r, d.border_color)
r.DrawRect(&sdl.Rect{d.X, d.Y, d.W, d.H})
}
func (s *AnimatedSprite) Draw(renderer *sdl.Renderer) {
src_rect := s.Src_rects[s.current_frame]
dest_rect := &sdl.Rect{
int32(s.X),
int32(s.Y),
src_rect.W,
src_rect.H,
}
renderer.Copy(s.Texture, src_rect, dest_rect)
}
func (d *RectDrawer) Draw(r *sdl.Renderer, offsetX, offsetY int32) error {
if err := r.SetDrawColor(d.r, d.g, d.b, d.a); err != nil {
return err
}
rect := &sdl.Rect{
X: d.x + offsetX,
Y: d.y + offsetY,
W: d.w,
H: d.h,
}
return r.FillRect(rect)
}
func LoadText(renderer *sdl.Renderer, font *ttf.Font, text string, textColor sdl.Color) *sdl.Texture {
bmp := font.RenderText_Solid(text, textColor)
if bmp == nil {
fmt.Fprintf(os.Stderr, "Unable to load text %s! SDL Error: %s\n", ttf.GetError())
} else {
texture, err := renderer.CreateTextureFromSurface(bmp)
if err != nil {
fmt.Fprintf(os.Stderr, "Unable to create texture %s! SDL Error: %s\n", sdl.GetError())
}
bmp.Free()
return texture
}
return nil
}
func LoadTexture(renderer *sdl.Renderer, path string) *sdl.Texture {
bmp, err := img.Load(path)
if err != nil {
fmt.Fprintf(os.Stderr, "Unable to load image %s! SDL Error: %s\n", path, img.GetError())
} else {
texture, err := renderer.CreateTextureFromSurface(bmp)
if err != nil {
fmt.Fprintf(os.Stderr, "Unable to create texture %s! SDL Error: %s\n", path, sdl.GetError())
}
bmp.Free()
return texture
}
return nil
}
func Draw(r *sdl.Renderer, g *grid.Grid) {
g.EachRoom(func(room *grid.Room) {
x := int32(room.X) * pixelSize * roomSize
y := int32(room.Y) * pixelSize * roomSize
width := roomSize * pixelSize
height := roomSize * pixelSize
rect := &sdl.Rect{x, y, width, height}
if room.Blocked {
r.FillRect(rect)
} else {
r.DrawRect(rect)
}
})
}
func (g gameObject) Draw(r *sdl.Renderer) {
tGeometry := make([]sdl.Rect, cap(g.geometry))
copy(tGeometry, g.geometry)
for index := range g.geometry {
tGeometry[index].X += int32(g.location.X) * roomSize
tGeometry[index].Y += int32(g.location.Y) * roomSize
}
for index := range tGeometry {
tGeometry[index].X *= pixelSize
tGeometry[index].Y *= pixelSize
tGeometry[index].H *= pixelSize
tGeometry[index].W *= pixelSize
}
r.FillRects(tGeometry)
}
func DrawPath(r *sdl.Renderer, nodes []graph.Node) {
for index, node := range nodes {
if index != 0 {
previousNode := nodes[index-1]
startRoom := previousNode.(*grid.Room)
endRoom := node.(*grid.Room)
x1 := int32(startRoom.X) * pixelSize * roomSize
y1 := int32(startRoom.Y) * pixelSize * roomSize
x2 := int32(endRoom.X) * roomSize * pixelSize
y2 := int32(endRoom.Y) * roomSize * pixelSize
r.DrawLine(int(x1), int(y1), int(x2), int(y2))
}
}
}
func main() {
var window *sdl.Window
var renderer *sdl.Renderer
var event sdl.Event
var running bool
window = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
winWidth, winHeight, sdl.WINDOW_SHOWN)
if window == nil {
fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", sdl.GetError())
os.Exit(1)
}
renderer = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
if renderer == nil {
fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", sdl.GetError())
os.Exit(2)
}
running = true
for running {
event = sdl.WaitEventTimeout(1000) // wait here until an event is in the event queue
if event == nil {
fmt.Println("WaitEventTimeout timed out")
continue
}
switch t := event.(type) {
case *sdl.QuitEvent:
running = false
case *sdl.MouseMotionEvent:
fmt.Printf("[%d ms] MouseMotion\ttype:%d\tid:%d\tx:%d\ty:%d\txrel:%d\tyrel:%d\n",
t.Timestamp, t.Type, t.Which, t.X, t.Y, t.XRel, t.YRel)
case *sdl.MouseButtonEvent:
fmt.Printf("[%d ms] MouseButton\ttype:%d\tid:%d\tx:%d\ty:%d\tbutton:%d\tstate:%d\n",
t.Timestamp, t.Type, t.Which, t.X, t.Y, t.Button, t.State)
case *sdl.MouseWheelEvent:
fmt.Printf("[%d ms] MouseWheel\ttype:%d\tid:%d\tx:%d\ty:%d\n",
t.Timestamp, t.Type, t.Which, t.X, t.Y)
case *sdl.KeyUpEvent:
fmt.Printf("[%d ms] Keyboard\ttype:%d\tsym:%c\tmodifiers:%d\tstate:%d\trepeat:%d\n",
t.Timestamp, t.Type, t.Keysym.Sym, t.Keysym.Mod, t.State, t.Repeat)
}
}
renderer.Destroy()
window.Destroy()
}
func LoadTextureTransparent(renderer *sdl.Renderer, path string, r, g, b uint8) *sdl.Texture {
bmp, err := img.Load(path)
if err != nil {
fmt.Fprintf(os.Stderr, "Unable to load image %s! SDL Error: %s\n", path, img.GetError())
} else {
if bmp.SetColorKey(1, sdl.MapRGB(bmp.Format, r, g, b)) != 0 {
fmt.Fprintf(os.Stderr, "Unable to set Color Key %s! SDL Error: %s\n", path, sdl.GetError())
}
texture, err := renderer.CreateTextureFromSurface(bmp)
if err != nil {
fmt.Fprintf(os.Stderr, "Unable to create texture %s! SDL Error: %s\n", path, sdl.GetError())
}
bmp.Free()
return texture
}
return nil
}
func run() int {
var window *sdl.Window
var renderer *sdl.Renderer
var event sdl.Event
var running bool
var err error
window, err = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
winWidth, winHeight, sdl.WINDOW_SHOWN)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", err)
return 1
}
defer window.Destroy()
renderer, err = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", err)
return 2
}
defer renderer.Destroy()
running = true
for running {
for event = sdl.PollEvent(); event != nil; event = sdl.PollEvent() {
switch t := event.(type) {
case *sdl.QuitEvent:
running = false
case *sdl.MouseMotionEvent:
fmt.Printf("[%d ms] MouseMotion\ttype:%d\tid:%d\tx:%d\ty:%d\txrel:%d\tyrel:%d\n",
t.Timestamp, t.Type, t.Which, t.X, t.Y, t.XRel, t.YRel)
case *sdl.MouseButtonEvent:
fmt.Printf("[%d ms] MouseButton\ttype:%d\tid:%d\tx:%d\ty:%d\tbutton:%d\tstate:%d\n",
t.Timestamp, t.Type, t.Which, t.X, t.Y, t.Button, t.State)
case *sdl.MouseWheelEvent:
fmt.Printf("[%d ms] MouseWheel\ttype:%d\tid:%d\tx:%d\ty:%d\n",
t.Timestamp, t.Type, t.Which, t.X, t.Y)
case *sdl.KeyUpEvent:
fmt.Printf("[%d ms] Keyboard\ttype:%d\tsym:%c\tmodifiers:%d\tstate:%d\trepeat:%d\n",
t.Timestamp, t.Type, t.Keysym.Sym, t.Keysym.Mod, t.State, t.Repeat)
}
}
}
return 0
}
// Load loads the image into a Texture
func Load(renderer *sdl.Renderer, fileName, id string) error {
tempSurface, err := img.Load(fileName)
if err != nil {
return err
}
defer tempSurface.Free()
texture, err := renderer.CreateTextureFromSurface(tempSurface)
if err != nil {
return err
}
textureMap[id] = texture
return nil
}
func (t *Label) Draw(renderer *sdl.Renderer) {
surface, err := t.font.RenderUTF8_Solid(t.text, sdl.Color{255, 255, 255, 255})
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create surface: %s\n", err)
os.Exit(1)
}
texture, err := renderer.CreateTextureFromSurface(surface)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create texture: %s\n", err)
os.Exit(1)
}
src := &sdl.Rect{0, 0, surface.W, surface.H}
dst := &sdl.Rect{t.rect.X, t.rect.Y, src.W, src.H}
renderer.Copy(texture, src, dst)
surface.Free()
}
func DrawGraph(r *sdl.Renderer, g *graph.Graph) {
nodesDrawn := make(map[graph.Node]struct{})
g.EachAdjacencyList(func(n graph.Node, l []graph.Node) {
for _, d := range l {
_, drawn := nodesDrawn[d]
if !drawn {
startRoom := n.(*grid.Room)
endRoom := d.(*grid.Room)
x1 := int32(startRoom.X) * pixelSize * roomSize
y1 := int32(startRoom.Y) * pixelSize * roomSize
x2 := int32(endRoom.X) * roomSize * pixelSize
y2 := int32(endRoom.Y) * roomSize * pixelSize
r.DrawLine(int(x1), int(y1), int(x2), int(y2))
}
}
nodesDrawn[n] = struct{}{}
})
}
func (m *Menu) DrawItem(renderer *sdl.Renderer, index int) {
var text_surface *sdl.Surface
var text_texture *sdl.Texture
var text_width, text_height int32
var text_rect sdl.Rect
var screen_width, _, _ int = renderer.GetRendererOutputSize()
for index, menu_item := range m.menu_items {
if index == m.selected_item {
text_surface = m.font.RenderText_Solid(menu_item.text, *m.selected_color)
} else {
text_surface = m.font.RenderText_Solid(menu_item.text, *m.unselected_color)
}
text_width = text_surface.W
text_height = text_surface.H
text_texture = renderer.CreateTextureFromSurface(text_surface)
text_rect = sdl.Rect{
int32(screen_width) - 10 - text_width, //X position
(m.font_size_32 * int32(index)),
text_width,
text_height,
}
renderer.Copy(text_texture, nil, &text_rect)
}
}
func (animation *MenuItemAnimation) Generate(renderer *sdl.Renderer) (*sdl.Texture, *sdl.Texture, []*sdl.Rect, uint64) {
highlightedTexture, err := renderer.CreateTextureFromSurface(animation.highlightedAnimation)
if err != nil {
panic(err)
}
notHighlightedTexture, err := renderer.CreateTextureFromSurface(animation.notHighlightedAnimation)
rows := animation.highlightedAnimation.W / animation.dx
columns := animation.highlightedAnimation.H / animation.dy
rects := make([]*sdl.Rect, rows*columns)
xMult := columns * int32((animation.AnimationDirection>>YX)%2)
if xMult == 0 {
xMult = 1
}
yMult := rows * int32(1-(animation.AnimationDirection>>YX)%2)
if yMult == 0 {
yMult = 1
}
xDir := int32(1)
xPluss := int32(0)
yDir := int32(1)
yPluss := int32(0)
if (animation.AnimationDirection>>LeftRight)%2 == 0 {
xDir = -1
xPluss = rows
}
if (animation.AnimationDirection>>UpDown)%2 == 0 {
yDir = -1
yPluss = columns
}
for y := int32(0); y < columns; y++ {
for x := int32(0); x < rows; x++ {
currentRect := sdl.Rect{animation.dx * x, animation.dy * y, animation.dx, animation.dy}
rects[((xPluss+x*xDir)*xMult + (yPluss+y*yDir)*yMult)] = ¤tRect
}
}
return highlightedTexture, notHighlightedTexture, rects, animation.FrameLength
}
func main() {
var window *sdl.Window
var renderer *sdl.Renderer
sdl.Init(sdl.INIT_EVERYTHING)
window = createWindow(winTitle, winHeight, winWidth)
defer window.Destroy()
renderer = createRenderer(window)
defer renderer.Destroy()
var secTickChan = time.Tick(time.Second)
var events = &Events{}
var fps = 0
var view = NewGameView()
for {
// Pump events
events.GetEvents()
// Pass events and renderer to view
view.Render(renderer, events)
// This structure logs the fps
select {
case <-secTickChan:
log.Println("fps:", fps)
fps = 0
default:
fps++
}
// Delay the next frame rendering to free up CPU
sdl.Delay(13)
}
}
func (m *Menu) DrawTitle(renderer *sdl.Renderer) {
var text_surface *sdl.Surface
var text_texture *sdl.Texture
var text_width, text_height int32
var title_rect sdl.Rect
var _, screen_height, _ int = renderer.GetRendererOutputSize()
text_surface = m.title_font.RenderText_Solid(m.menu_title, *m.title_color)
text_width = text_surface.W
text_height = text_surface.H
text_texture = renderer.CreateTextureFromSurface(text_surface)
title_rect = sdl.Rect{
20, //X position
int32(screen_height) - 20 - text_height, //Y position
text_width,
text_height,
}
renderer.Copy(text_texture, nil, &title_rect)
}
func main() {
var window *sdl.Window
var renderer *sdl.Renderer
var image *sdl.Surface
var texture *sdl.Texture
var src, dst sdl.Rect
window = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
winWidth, winHeight, sdl.WINDOW_SHOWN)
if window == nil {
fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", sdl.GetError())
os.Exit(1)
}
renderer = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
if renderer == nil {
fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", sdl.GetError())
os.Exit(2)
}
image = sdl.LoadBMP(imageName)
if image == nil {
fmt.Fprintf(os.Stderr, "Failed to load BMP: %s", sdl.GetError())
os.Exit(3)
}
texture = renderer.CreateTextureFromSurface(image)
if texture == nil {
fmt.Fprintf(os.Stderr, "Failed to create texture: %s\n", sdl.GetError())
os.Exit(4)
}
src = sdl.Rect{0, 0, 512, 512}
dst = sdl.Rect{100, 50, 512, 512}
renderer.Clear()
renderer.Copy(texture, &src, &dst)
renderer.Present()
sdl.Delay(2000)
image.Free()
texture.Destroy()
renderer.Destroy()
window.Destroy()
}
func main() {
var window *sdl.Window
var renderer *sdl.Renderer
var points []sdl.Point
var rect sdl.Rect
var rects []sdl.Rect
window = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
winWidth, winHeight, sdl.WINDOW_SHOWN)
if window == nil {
fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", sdl.GetError())
os.Exit(1)
}
renderer = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
if renderer == nil {
fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", sdl.GetError())
os.Exit(2)
}
renderer.SetDrawColor(255, 255, 255, 255)
renderer.DrawPoint(150, 300)
renderer.SetDrawColor(0, 0, 255, 255)
renderer.DrawLine(0, 0, 200, 200)
points = []sdl.Point{{0, 0}, {100, 300}, {100, 300}, {200, 0}}
renderer.SetDrawColor(255, 255, 0, 255)
renderer.DrawLines(points)
rect = sdl.Rect{300, 0, 200, 200}
renderer.SetDrawColor(255, 0, 0, 255)
renderer.DrawRect(&rect)
rects = []sdl.Rect{{400, 400, 100, 100}, {550, 350, 200, 200}}
renderer.SetDrawColor(0, 255, 255, 255)
renderer.DrawRects(rects)
rect = sdl.Rect{250, 250, 200, 200}
renderer.SetDrawColor(0, 255, 0, 255)
renderer.FillRect(&rect)
rects = []sdl.Rect{{500, 300, 100, 100}, {200, 300, 200, 200}}
renderer.SetDrawColor(255, 0, 255, 255)
renderer.FillRects(rects)
renderer.Present()
sdl.Delay(2000)
renderer.Destroy()
window.Destroy()
}
func run() int {
var window *sdl.Window
var renderer *sdl.Renderer
var image *sdl.Surface
var texture *sdl.Texture
var src, dst sdl.Rect
var err error
window, err = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
winWidth, winHeight, sdl.WINDOW_SHOWN)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", err)
return 1
}
defer window.Destroy()
renderer, err = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", err)
return 2
}
defer renderer.Destroy()
image, err = sdl.LoadBMP(imageName)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to load BMP: %s\n", err)
return 3
}
defer image.Free()
texture, err = renderer.CreateTextureFromSurface(image)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create texture: %s\n", err)
return 4
}
defer texture.Destroy()
src = sdl.Rect{0, 0, 512, 512}
dst = sdl.Rect{100, 50, 512, 512}
renderer.Clear()
renderer.Copy(texture, &src, &dst)
renderer.Present()
sdl.Delay(2000)
return 0
}
func (t *TitleState) Draw(renderer *sdl.Renderer) {
renderer.Copy(t.currentTexture(), &t.src, &t.dest)
}
func (t *Rect) Draw(renderer *sdl.Renderer) {
renderer.SetDrawColor(t.r, t.g, t.b, t.a)
renderer.FillRect(t.Rect)
renderer.DrawRect(t.Rect)
}
func (gb *GUIBlock) Bake(renderer *sdl.Renderer) *sdl.Texture {
finalTxtr, _ := renderer.CreateTexture(sdl.PIXELFORMAT_RGBA8888, sdl.TEXTUREACCESS_TARGET, 800, 600)
originalTarget := renderer.GetRenderTarget()
renderer.SetRenderTarget(finalTxtr)
defer renderer.SetRenderTarget(originalTarget)
renderer.SetDrawColor(1, 1, 1, 0)
renderer.FillRect(gb.Pos)
for _, el := range gb.Elements {
println("Baking: ")
println(el.Layer, el.Pos.X, el.Pos.Y)
renderer.SetDrawColor(el.BGColor.R, el.BGColor.G, el.BGColor.B, el.BGColor.A)
renderer.FillRect(el.Pos)
for _, txt := range el.Texts {
texture, W, H := txt.Bake(renderer)
renderer.Copy(
texture,
&sdl.Rect{0, 0, W, H},
&sdl.Rect{el.Pos.X + txt.RelPos.X, el.Pos.Y + txt.RelPos.Y, W, H})
}
}
finalTxtr.SetBlendMode(sdl.BLENDMODE_BLEND)
finalTxtr.SetAlphaMod(216)
return finalTxtr
}
func main() {
var window *sdl.Window
var renderer *sdl.Renderer
var event sdl.Event
var running bool
window = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
winWidth, winHeight, sdl.WINDOW_SHOWN)
if window == nil {
fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", sdl.GetError())
os.Exit(1)
}
renderer = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
if renderer == nil {
fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", sdl.GetError())
os.Exit(2)
}
var peepArray []sdl.Event = make([]sdl.Event, 2)
peepArray[0] = &sdl.UserEvent{sdl.USEREVENT, sdl.GetTicks(), window.GetID(), 1331, nil, nil}
peepArray[1] = &sdl.UserEvent{sdl.USEREVENT, sdl.GetTicks(), window.GetID(), 10101, nil, nil}
running = true
lastPushTime := sdl.GetTicks()
for running {
if lastPushTime+pushTime < sdl.GetTicks() {
lastPushTime = sdl.GetTicks()
sdl.PumpEvents()
numEventsHandled := sdl.PeepEvents(peepArray, sdl.ADDEVENT, sdl.FIRSTEVENT, sdl.LASTEVENT)
if numEventsHandled < 0 {
fmt.Printf("PeepEvents error: %s\n", sdl.GetError())
} else {
fmt.Printf("Successful push of %d events\n", numEventsHandled)
}
}
for event = sdl.PollEvent(); event != nil; event = sdl.PollEvent() {
switch t := event.(type) {
case *sdl.QuitEvent:
running = false
case *sdl.MouseMotionEvent:
fmt.Printf("[%d ms] MouseMotion\ttype:%d\tid:%d\tx:%d\ty:%d\txrel:%d\tyrel:%d\n",
t.Timestamp, t.Type, t.Which, t.X, t.Y, t.XRel, t.YRel)
case *sdl.MouseButtonEvent:
fmt.Printf("[%d ms] MouseButton\ttype:%d\tid:%d\tx:%d\ty:%d\tbutton:%d\tstate:%d\n",
t.Timestamp, t.Type, t.Which, t.X, t.Y, t.Button, t.State)
case *sdl.MouseWheelEvent:
fmt.Printf("[%d ms] MouseWheel\ttype:%d\tid:%d\tx:%d\ty:%d\n",
t.Timestamp, t.Type, t.Which, t.X, t.Y)
case *sdl.KeyUpEvent:
fmt.Printf("[%d ms] Keyboard\ttype:%d\tsym:%c\tmodifiers:%d\tstate:%d\trepeat:%d\n",
t.Timestamp, t.Type, t.Keysym.Sym, t.Keysym.Mod, t.State, t.Repeat)
case *sdl.UserEvent:
fmt.Printf("[%d ms] UserEvent\tcode:%d\n", t.Timestamp, t.Code)
}
}
sdl.Delay(1000 / 30)
}
renderer.Destroy()
window.Destroy()
}
func main() {
var window *sdl.Window
var renderer *sdl.Renderer
var texture *sdl.Texture
var src, dst sdl.Rect
var err error
window, err = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
winWidth, winHeight, sdl.WINDOW_SHOWN)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", err)
os.Exit(1)
}
defer window.Destroy()
renderer, err = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", err)
os.Exit(2)
}
defer renderer.Destroy()
image, err := img.Load(imageName)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to load PNG: %s\n", err)
os.Exit(3)
}
defer image.Free()
texture, err = renderer.CreateTextureFromSurface(image)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create texture: %s\n", err)
os.Exit(4)
}
defer texture.Destroy()
src = sdl.Rect{0, 0, 512, 512}
dst = sdl.Rect{100, 50, 512, 512}
renderer.Clear()
renderer.SetDrawColor(255, 0, 0, 255)
renderer.FillRect(&sdl.Rect{0, 0, int32(winWidth), int32(winHeight)})
renderer.Copy(texture, &src, &dst)
renderer.Present()
sdl.Delay(2000)
}