func (w *World) CreateFromSvg(filename string) {
var svg svgFile
responseCh := make(chan mandala.LoadResourceResponse)
mandala.ReadResource(filename, responseCh)
response := <-responseCh
if response.Error != nil {
mandala.Fatalf(response.Error.Error())
}
buf := response.Buffer
err := xml.Unmarshal(buf, &svg)
if err != nil {
mandala.Fatalf(err.Error())
}
scaleX := float32(w.width) / svg.Width
scaleY := float32(w.height) / svg.Height
for _, group := range svg.Groups {
for _, rect := range group.Rects {
rX := (rect.X + rect.Width/2) * scaleX
rY := float32(w.height) - (rect.Y+rect.Height/2)*scaleY
rW := rect.Width * scaleX
rH := rect.Height * scaleY
box := newBox(w, rW, rH)
pos := vect.Vect{
vect.Float(rX),
vect.Float(rY),
}
box.physicsBody.SetPosition(pos)
if rect.Transform != "" {
var a, b, c float32
_, err = fmt.Sscanf(rect.Transform, "rotate(%f %f,%f)", &a, &b, &c)
if err != nil {
mandala.Fatalf(err.Error())
}
box.physicsBody.SetAngle(90 / chipmunk.DegreeConst)
}
box.openglShape.SetColor(colorful.HappyColor())
w.addBox(box)
}
}
line := svg.Groups[0].Line
w.setGround(newGround(
w,
0,
float32(w.height)-float32(line.Y1*scaleY),
float32(w.width),
float32(w.height)-float32(line.Y2*scaleY),
))
}
func newBox(width, height float32) *box {
var err error
box := new(box)
// Sound player
box.player, err = mandala.NewAudioPlayer()
if err != nil {
mandala.Fatalf("%s\n", err.Error())
}
// Chipmunk body
box.physicsShape = chipmunk.NewBox(
vect.Vect{0, 0},
vect.Float(width),
vect.Float(height),
)
box.physicsShape.SetElasticity(BoxElasticity)
box.physicsBody = chipmunk.NewBody(vect.Float(BoxMass), box.physicsShape.Moment(float32(BoxMass)))
box.physicsBody.AddShape(box.physicsShape)
box.physicsBody.CallbackHandler = callbacks{}
// OpenGL shape
box.openglShape = shapes.NewBox(width, height)
return box
}
func (t *TestSuite) TestDraw() {
filename := GOPHER_PNG
distance, _, _, err := TestImage(filename, <-t.testDraw, imagetest.Center)
if err != nil {
mandala.Fatalf(err.Error())
}
t.True(distance < distanceThreshold, fmt.Sprintf("Image differs by distance %f", distance))
}
func newWorld(width, height int) *world {
world := &world{
width: width,
height: height,
projMatrix: mathgl.Ortho2D(0, float32(width), 0, float32(height)),
viewMatrix: mathgl.Ident4f(),
space: chipmunk.NewSpace(),
}
world.space.Gravity = vect.Vect{0, Gravity}
// Initialize the audio player
var err error
world.explosionPlayer, err = mandala.NewAudioPlayer()
if err != nil {
mandala.Fatalf("%s\n", err.Error())
}
// Read the PCM audio samples
responseCh := make(chan mandala.LoadResourceResponse)
mandala.ReadResource("raw/explosion.pcm", responseCh)
response := <-responseCh
if response.Error != nil {
mandala.Fatalf(response.Error.Error())
}
world.explosionBuffer = response.Buffer
responseCh = make(chan mandala.LoadResourceResponse)
mandala.ReadResource("raw/impact.pcm", responseCh)
response = <-responseCh
if response.Error != nil {
mandala.Fatalf(response.Error.Error())
}
world.impactBuffer = response.Buffer
return world
}
func NewWorld(width, height int) *World {
world := &World{
width: width,
height: height,
projMatrix: mathgl.Ortho2D(0, float32(width), 0, float32(height)),
viewMatrix: mathgl.Ident4f(),
space: chipmunk.NewSpace(),
}
world.space.Gravity = vect.Vect{0, Gravity}
// Initialize the audio players
var err error
world.explosionPlayer, err = mandala.NewAudioPlayer()
if err != nil {
mandala.Fatalf("%s\n", err.Error())
}
world.impactPlayer, err = mandala.NewAudioPlayer()
if err != nil {
mandala.Fatalf("%s\n", err.Error())
}
// Read the PCM audio samples
responseCh := make(chan mandala.LoadResourceResponse)
mandala.ReadResource("raw/explosion.pcm", responseCh)
response := <-responseCh
if response.Error != nil {
mandala.Fatalf(response.Error.Error())
}
world.explosionBuffer = response.Buffer
responseCh = make(chan mandala.LoadResourceResponse)
mandala.ReadResource("raw/impact.pcm", responseCh)
response = <-responseCh
if response.Error != nil {
mandala.Fatalf(response.Error.Error())
}
world.impactBuffer = response.Buffer
// Compile the shaders
world.boxProgramShader = shaders.NewProgram(shapes.DefaultBoxFS, shapes.DefaultBoxVS)
world.segmentProgramShader = shaders.NewProgram(shapes.DefaultSegmentFS, shapes.DefaultSegmentVS)
// Load the font
responseCh = make(chan mandala.LoadResourceResponse)
mandala.ReadResource("raw/freesans.ttf", responseCh)
response = <-responseCh
fontBuffer := response.Buffer
err = response.Error
if err != nil {
panic(err)
}
world.font, err = gltext.LoadTruetype(bytes.NewBuffer(fontBuffer), world, 12, 32, 127, gltext.LeftToRight)
if err != nil {
panic(err)
}
return world
}
