// SetSubImage sets a designated part of an image for this sprite renderer
// @param {[string]} this *SpriteRenderer [the base image path]
// @param {[image.Rectangle]} this *SpriteRenderer [the rectangular bounds of designated part of image]
// @return
func (s *SpriteRenderer) SetSubImage(imageLoc string, bounds image.Rectangle) {
img, err := Image.NewImage(imageLoc)
if err != nil {
Logging.Debug("Cannot create image: " + err.Error())
}
img, err = img.SubImage(bounds)
if err != nil {
Logging.Debug("Cannot create sub image: " + err.Error())
}
s.img = &img
}
// SpliceSpriteSheetAnimation manually cuts up a row of a sprite sheet based on user defined dimensions and sets it as the current animation
func SpliceSpriteSheetAnimation(imageLoc string,
frameWidth, frameHeight, noOfFrames, rowNum int) *FrameAnimation {
fa := newFrameAnimation()
img, err := Image.NewImage(imageLoc)
if err != nil {
Logging.Debug("Cannot create image: " + err.Error())
}
// throw warnings for bad input
numOfRows := float32(img.Bounds().Dy() / frameHeight)
numOfColumns := float32(img.Bounds().Dx() / frameWidth)
if float32(noOfFrames) > numOfColumns || numOfColumns < 1 {
Logging.Debug("WARNING: frames out of bounds")
}
if float32(rowNum) > numOfRows || numOfRows < 1 {
Logging.Debug("WARNING: row desired out of bounds")
}
for j := 0; j < img.Bounds().Dy(); j += frameHeight {
// only use our desired row (if specified)
if rowNum != 0 && j/frameHeight != rowNum-1 {
continue
}
// splice the row by the amount of intended images
for i := 0; i < img.Bounds().Dx(); i += frameWidth {
// only grab our desired number of frames (if specified)
if noOfFrames != 0 && i/frameWidth >= noOfFrames {
continue
}
// splice image from row, and insert piece into array
b := image.Rect(i, j, i+frameWidth, j+frameHeight)
spriteSheetPart, err := img.SubImage(b)
if err != nil {
Logging.Debug("Cannot create sub image: " + err.Error())
}
fa.animationImages = append(fa.animationImages, &spriteSheetPart)
}
}
return fa
}
// Append simply adds an image from the aggregate to the end of our animation
func (f *FrameAnimation) Append(imageLoc string) {
img, err := Image.NewImage(imageLoc)
if err != nil {
Logging.Debug("Cannot create image: " + err.Error())
}
f.animationImages = append(f.animationImages, &img)
}
func NewWindowedWindow(title string, width, height int) Window {
// FOR GLFW event handling
runtime.LockOSThread()
windowSDL, err := sdl.CreateWindow(title, sdl.WINDOWPOS_UNDEFINED,
sdl.WINDOWPOS_UNDEFINED,
width, height, sdl.WINDOW_OPENGL)
if err != nil {
panic(err)
}
if windowSDL == nil {
panic(sdl.GetError())
}
context, err := sdl.GL_CreateContext(windowSDL)
sdl.GL_MakeCurrent(windowSDL, context)
if err != nil {
panic("Error loading window: " + err.Error())
}
w := Window{title: title, Width: width, Height: height, full: false, windowSDL: windowSDL, contextSDL: context, running: false}
w.init()
var current sdl.DisplayMode
if err := sdl.GetCurrentDisplayMode(0, ¤t); err != nil {
Logging.Debug("Could not get display mode: " + err.Error())
}
Logging.Info("Display #%d: current display mode is %dx%dpx @ %dhz. \n", 0, current.W, current.H, current.RefreshRate)
return w
}
// SetImage puts a designated image from the agregate into our image which will be rendered
func (s *SpriteRenderer) SetImage(imageLoc string) {
img, err := Image.NewImage(imageLoc)
if err != nil {
Logging.Debug("Cannot create image: " + err.Error())
}
s.img = &img
}
// SetCurrentAnimation takes a animation's name and tries to set that as the current animation
func (a *AnimationManager) SetCurrentAnimation(mappedAnimationName string) {
animationRetrieved, ok := a.animationsMap[mappedAnimationName]
if !ok {
Logging.Debug("couldn't find the animation: " + mappedAnimationName)
}
a.currentAnimation = animationRetrieved
Logging.Info(mappedAnimationName, ":Set current anim to ", a.currentAnimation)
Logging.Info("Animation Map: ", a.animationsMap)
}
// Normalizes normalizes the vector values to be in 0.0 - 1.0 range
func (this vector3) Normalize() vector3 {
mag := this.Mag()
if mag > 0 {
return this.Scalar(1 / mag)
}
Logging.Debug("Cannot normalize vector, magnitude 0")
return ZeroVector3()
}
// Remove an item from the animation via 1-based input
func (f *FrameAnimation) Remove(imageIdx int) {
// convert to zero based
imageIdx--
// shift the image to the end, then pop it
if imageIdx >= 0 && imageIdx < len(f.animationImages) {
f.animationImages = append(f.animationImages[:imageIdx], f.animationImages[imageIdx+1:]...)
f.animationImages = f.animationImages[:len(f.animationImages)-1]
} else {
Logging.Debug("cant remove from animation, out of bounds...")
}
}
func (this *Node) AddComponent(component Component) {
if n, ok := component.(Child); ok {
n.SetParent(this)
} else {
Logging.Debug("No parent to set for child component.\n")
}
this.components = append(this.components, component)
component.Initialize()
}
func main() {
// The logger now initializes in the Engine's start. That is where flags get parsed etc.
GT.EngineStart()
// TODO: test filtering and simultaneous outputs once implemented and configured
Logging.Debug("debug")
Logging.Info("info")
// Note: this has been tested to work on multiple code call levels
// so inserting debug logs in SimpleWindow.go as well as Scene.go
// will place all info into GT/Logging/default.log
}
func (this *TextRenderer) SetText(text string) {
this.text = text
for _, t := range text {
img, err := Image.NewFontImage(this.font, t)
if err != nil {
Logging.Debug("Cannot create image: " + err.Error())
}
this.runeImgs = append(this.runeImgs, &img)
}
}
// Reorder simply swaps the order in which any two images are rendered ()
func (f *FrameAnimation) Reorder(imageOneIdx int, imageTwoIdx int) {
// convert from one-based input to zero-based logic
listLength := len(f.animationImages)
lowerIdx := imageOneIdx - 1
higherIdx := imageTwoIdx - 1
// keep track of the higher and lower indexes
if imageOneIdx > imageTwoIdx {
lowerIdx = imageTwoIdx
higherIdx = imageOneIdx
}
if imageOneIdx == imageTwoIdx || higherIdx > listLength || lowerIdx < 0 {
Logging.Debug("invalid input, please ensure you are entering two unique dimensions within the list")
return
}
imgTmp := f.animationImages[lowerIdx]
f.animationImages[lowerIdx] = f.animationImages[higherIdx]
f.animationImages[higherIdx] = imgTmp
}
// returns image of rendered font
func (this FontInfo) GetImage() image.Image {
f := truetype.Font(this)
maxWidth := 0
curW := 0
maxHeight := int(f.Bounds(sizeFixed).Max.Sub(f.Bounds(sizeFixed).Min).Y) + insetPadding
for idx, val := range text {
if idx > 0 && int(math.Mod(float64(idx), float64(itemsPerRow))) == 0 {
maxHeight += int(f.Bounds(sizeFixed).Max.Sub(f.Bounds(sizeFixed).Min).Y) + insetPadding
curW = 0
}
i := f.Index(val)
hmet := f.HMetric(sizeFixed, i)
curW += int(hmet.AdvanceWidth) + insetPadding
if curW > maxWidth {
maxWidth = curW
}
}
Logging.Debug("Font ", this.Name())
Logging.Debug("Max width: ", maxWidth)
Logging.Debug("Max height: ", maxHeight)
// Draw the background and the guidelines.
fg, bg := image.Black, image.Transparent
// diffY := int(f.Bounds(sizeFixed).Max.Sub(f.Bounds(sizeFixed).Min).Y)
// add a constant to the y term because of subtle bleeding between vertical space, probably because of advance height
rgba := image.NewRGBA(image.Rect(0, 0, maxWidth, maxHeight)) //diffY+5))
draw.Draw(rgba, rgba.Bounds(), bg, image.ZP, draw.Src)
// Draw the text.
h := font.HintingNone
switch hinting {
case "full":
h = font.HintingFull
}
d := &font.Drawer{
Dst: rgba,
Src: fg,
Face: truetype.NewFace(&f, &truetype.Options{
Size: size,
DPI: dpi,
Hinting: h,
}),
}
// y := int(math.Abs(float64(f.Bounds(sizeFixed).Max.Y))) //10 + int(math.Ceil(*size**dpi/72))
// dy := int(math.Ceil(size * spacing * dpi / 72))
tWidth := 0
tHeight := int(math.Abs(float64(f.Bounds(sizeFixed).Max.Y)))
for idx, r := range text {
if idx > 0 && int(math.Mod(float64(idx), float64(itemsPerRow))) == 0 {
tHeight += int(f.Bounds(sizeFixed).Max.Sub(f.Bounds(sizeFixed).Min).Y) + insetPadding
tWidth = 0
}
i := f.Index(r)
hmet := f.HMetric(sizeFixed, i)
d.Dot = fixed.P(tWidth, tHeight)
tWidth += int(hmet.AdvanceWidth) + insetPadding
d.DrawString(string(r))
}
return rgba
}
