func DrawLine(_red, _green, _blue, _alpha uint8, _x1, _y1, _x2, _y2 int) {
sdl.SetRenderDrawColor(g_game.renderer, _red, _green, _blue, _alpha)
sdl.SetRenderDrawBlendMode(g_game.renderer, sdl.BLENDMODE_BLEND)
sdl.RenderDrawLine(g_game.renderer, _x1, _y1, _x2, _y2)
sdl.SetRenderDrawBlendMode(g_game.renderer, sdl.BLENDMODE_NONE)
sdl.SetRenderDrawColor(g_game.renderer, 0, 0, 0, 255)
}
func DrawRect(_rect *Rect, _red, _green, _blue, _alpha uint8) {
sdl.SetRenderDrawColor(g_game.renderer, _red, _green, _blue, _alpha)
sdl.SetRenderDrawBlendMode(g_game.renderer, sdl.BLENDMODE_BLEND)
sdl.RenderDrawRect(g_game.renderer, *_rect.toSDL())
sdl.SetRenderDrawBlendMode(g_game.renderer, sdl.BLENDMODE_NONE)
sdl.SetRenderDrawColor(g_game.renderer, 0, 0, 0, 255)
}
func DrawCircle(_x, _y, _radius int, _red, _green, _blue, _alpha uint8) {
sdl.SetRenderDrawColor(g_game.renderer, _red, _green, _blue, _alpha)
sdl.SetRenderDrawBlendMode(g_game.renderer, sdl.BLENDMODE_BLEND)
for y := _y - _radius; y <= _y+_radius; y++ {
for x := _x - _radius; x <= _x+_radius; x++ {
if int(math.Hypot(float64(x-_x), float64(y-_y))) == _radius {
sdl.RenderDrawPoint(g_game.renderer, x, y)
}
}
}
sdl.SetRenderDrawBlendMode(g_game.renderer, sdl.BLENDMODE_NONE)
sdl.SetRenderDrawColor(g_game.renderer, 0, 0, 0, 255)
}