func (l *Level) CreateSurface(surface *sdl.Surface) {
f := surface.Format
l.Surface = sdl.CreateRGBSurface(sdl.SWSURFACE, SCREENWIDTH, SCREENHEIGHT, BPP, f.Rmask, f.Gmask, f.Bmask, f.Amask)
var x, y int16
for y = 0; y < 15; y++ {
for x = 0; x < 20; x++ {
l.Surface.Blit(&sdl.Rect{BOXSIZE * x, BOXSIZE * y, BOXSIZE, BOXSIZE}, IM.Tiles[l.Grid[y][x]], nil)
}
}
l.Surface.Flip()
}
func (f *Font) setupTextRendering(color [3]byte, txt string) (gl.GLuint, *sdl.Surface, *sdl.Surface, *sdl.Surface, int, int) {
//
var texture gl.GLuint
/* Use SDL_TTF to render our text */
var col sdl.Color
col.R = color[0]
col.G = color[1]
col.B = color[2]
// get surface with text
initial := ttf.RenderText_Blended(f.font, txt, col)
/* Convert the rendered text to a known format */
w := next_p2(int(initial.W))
h := next_p2(int(initial.H))
intermediarya := sdl.CreateRGBSurface(0, w, h, 32,
0x00ff0000, 0x0000ff00, 0x000000ff, 0xff000000)
var rr *sdl.Rect = nil
intermediarya.Blit(rr, initial, rr)
intermediary := intermediarya.DisplayFormatAlpha()
/* Tell GL about our new texture */
gl.GenTextures(1, &texture)
gl.BindTexture(gl.TEXTURE_2D, texture)
gl.TexImage2D(gl.TEXTURE_2D, 0, 4, gl.GLsizei(w), gl.GLsizei(h), 0, gl.BGRA,
gl.UNSIGNED_BYTE, unsafe.Pointer(intermediary.Pixels))
gl.TexEnvi(gl.TEXTURE_ENV, gl.TEXTURE_ENV_MODE, gl.MODULATE)
/* GL_NEAREST looks horrible, if scaled... */
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)
/* prepare to render our texture */
gl.Enable(gl.TEXTURE_2D)
gl.BindTexture(gl.TEXTURE_2D, texture)
gl.Color4f(1.0, 1.0, 1.0, 1.0)
gl.Enable(gl.BLEND)
// gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
gl.BlendFunc(gl.ONE, gl.ONE_MINUS_SRC_COLOR) // TODO : MAke real alpha work!
return texture, initial, intermediarya, intermediary, w, h
}
func NewButton(x, y, w, h float64, text string, Func func()) *Button {
b := new(Button)
b.X, b.Y = x, y
b.W, b.H = w, h
b.OnClick = Func
//Setup Image
f := screen.Format
b.Image = sdl.CreateRGBSurface(sdl.SWSURFACE, int(w), int(h), BPP, f.Rmask, f.Gmask, f.Bmask, f.Amask)
b.Image.FillRect(&sdl.Rect{0, 0, uint16(w), uint16(h)}, 0xFF00FF)
tekst := ttf.RenderText_Blended(font, text, sdl.Color{255, 255, 255, 0})
b.Image.Blit(&sdl.Rect{5, 5, 0, 0}, tekst, nil)
b.Image.Flip()
return b
}