// Draw : wrap the openGl draw method and report fps info
func (s *BaseScene) Draw() {
if s.update {
// TODO: remove hard coded resolution
// gl.BindTexture(gl.TEXTURE_2D, s.spriteSheet.textureId)
Opengl.BindBuffers()
s.update = false
}
Opengl.Draw()
// calc fps
if (int32(time.Now().Unix()) - s.timestart) >= 1 {
fmt.Printf("FPS: %d \n", s.fps)
s.fps = 0
s.timestart = int32(time.Now().Unix())
}
s.fps = s.fps + 1
}
func (s *BaseScene) Draw() {
if len(s.entities) == 0 {
fmt.Println("No Sprites to draw.")
return
}
idx := uint32(0)
vertexInfo := &Opengl.OpenGLVertexInfo{}
// clone := &Opengl.OpenGLVertexInfo{}
for _, v := range s.spriteDraw {
//TODO: move this to sprite class and use interface instead.. what if i have "shape"
// fmt.Printf("Img name: %s\n", k)
// glInfo := v.getGLVertexInfo()
w, h := v.GetImageSection().GetDimensions()
for i := 0; i < 4; i++ {
vertexInfo.Translations = append(vertexInfo.Translations, float32(v.x), float32(v.y), 0)
vertexInfo.Rotations = append(vertexInfo.Rotations, 0, 0, 1, v.rot)
vertexInfo.Scales = append(vertexInfo.Scales, v.xS, v.yS, 0)
vertexInfo.Colors = append(vertexInfo.Colors, v.r, v.g, v.b, v.a)
}
vertexInfo.Vertices = append(vertexInfo.Vertices, -0.5*w, 0.5*h, 1.0, 0.5*w, 0.5*h, 1.0, 0.5*w, -0.5*h, 1.0, -0.5*w, -0.5*h, 1.0)
// TODO: maybe put this inside struct to store since this will really never change
x, y := s.spriteSheet.GetUVFromPosition(v.GetImageSection().BottomLeft())
vertexInfo.Uvs = append(vertexInfo.Uvs, x, y)
x, y = s.spriteSheet.GetUVFromPosition(v.GetImageSection().BottomRight())
vertexInfo.Uvs = append(vertexInfo.Uvs, x, y)
x, y = s.spriteSheet.GetUVFromPosition(v.GetImageSection().TopRight())
vertexInfo.Uvs = append(vertexInfo.Uvs, x, y)
x, y = s.spriteSheet.GetUVFromPosition(v.GetImageSection().TopLeft())
vertexInfo.Uvs = append(vertexInfo.Uvs, x, y)
vertexInfo.Elements = append(vertexInfo.Elements, uint32(idx*4), uint32(idx*4+1), uint32(idx*4+2), uint32(idx*4), uint32(idx*4+2), uint32(idx*4+3))
// glInfo.AdjustElements(idx)
// idx += 4
// clone.Append(glInfo)
idx = idx + 1
}
// vertexInfo.Print()
Opengl.BindBuffers(vertexInfo)
gl.BindTexture(gl.TEXTURE_2D, s.spriteSheet.textureId)
Opengl.Draw(vertexInfo)
Opengl.Cleanup()
// calc fps
if (int32(time.Now().Unix()) - s.timestart) >= 1 {
fmt.Printf("FPS: %d \n", s.fps)
s.fps = 0
s.timestart = int32(time.Now().Unix())
}
s.fps = s.fps + 1
}