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package pixel
import (
"github.com/faiface/pixel/pixelgl"
"github.com/go-gl/glfw/v3.2/glfw"
)
// Pressed returns whether a button is currently pressed down.
func (w *Window) Pressed(button Button) bool {
return w.currInp.buttons[button]
}
// JustPressed returns whether a button has just been pressed down.
func (w *Window) JustPressed(button Button) bool {
return w.currInp.buttons[button] && !w.prevInp.buttons[button]
}
// JustReleased returns whether a button has just been released up.
func (w *Window) JustReleased(button Button) bool {
return !w.currInp.buttons[button] && w.prevInp.buttons[button]
}
// MousePosition returns the current mouse position relative to the window.
func (w *Window) MousePosition() Vec {
var x, y, width, height float64
pixelgl.Do(func() {
x, y = w.window.GetCursorPos()
wi, hi := w.window.GetSize()
width, height = float64(wi), float64(hi)
})
// transform to OpenGL coordinates
x = (x - width/2) / (width / 2)
y = (height/2 - y) / (height / 2)
return V(x, y)
}
// MouseScroll returns the scroll amount (in both axis) since the last call to Window.Update.
func (w *Window) MouseScroll() Vec {
return w.currInp.scroll
}
// Button is a keyboard or mouse button. Why distinguish?
type Button int
// List of all mouse buttons.
const (
MouseButton1 = Button(glfw.MouseButton1)
MouseButton2 = Button(glfw.MouseButton2)
MouseButton3 = Button(glfw.MouseButton3)
MouseButton4 = Button(glfw.MouseButton4)
MouseButton5 = Button(glfw.MouseButton5)
MouseButton6 = Button(glfw.MouseButton6)
MouseButton7 = Button(glfw.MouseButton7)
MouseButton8 = Button(glfw.MouseButton8)
MouseButtonLast = Button(glfw.MouseButtonLast)
MouseButtonLeft = Button(glfw.MouseButtonLeft)
MouseButtonRight = Button(glfw.MouseButtonRight)
MouseButtonMiddle = Button(glfw.MouseButtonMiddle)
)
// List of all keyboard buttons.
const (
KeyUnknown = Button(glfw.KeyUnknown)
KeySpace = Button(glfw.KeySpace)
KeyApostrophe = Button(glfw.KeyApostrophe)
KeyComma = Button(glfw.KeyComma)
KeyMinus = Button(glfw.KeyMinus)
KeyPeriod = Button(glfw.KeyPeriod)
KeySlash = Button(glfw.KeySlash)
Key0 = Button(glfw.Key0)
Key1 = Button(glfw.Key1)
Key2 = Button(glfw.Key2)
Key3 = Button(glfw.Key3)
Key4 = Button(glfw.Key4)
Key5 = Button(glfw.Key5)
Key6 = Button(glfw.Key6)
Key7 = Button(glfw.Key7)
Key8 = Button(glfw.Key8)
Key9 = Button(glfw.Key9)
KeySemicolon = Button(glfw.KeySemicolon)
KeyEqual = Button(glfw.KeyEqual)
KeyA = Button(glfw.KeyA)
KeyB = Button(glfw.KeyB)
KeyC = Button(glfw.KeyC)
KeyD = Button(glfw.KeyD)
KeyE = Button(glfw.KeyE)
KeyF = Button(glfw.KeyF)
KeyG = Button(glfw.KeyG)
KeyH = Button(glfw.KeyH)
KeyI = Button(glfw.KeyI)
KeyJ = Button(glfw.KeyJ)
KeyK = Button(glfw.KeyK)
KeyL = Button(glfw.KeyL)
KeyM = Button(glfw.KeyM)
KeyN = Button(glfw.KeyN)
KeyO = Button(glfw.KeyO)
KeyP = Button(glfw.KeyP)
KeyQ = Button(glfw.KeyQ)
KeyR = Button(glfw.KeyR)
KeyS = Button(glfw.KeyS)
KeyT = Button(glfw.KeyT)
KeyU = Button(glfw.KeyU)
KeyV = Button(glfw.KeyV)
KeyW = Button(glfw.KeyW)
KeyX = Button(glfw.KeyX)
KeyY = Button(glfw.KeyY)
KeyZ = Button(glfw.KeyZ)
KeyLeftBracket = Button(glfw.KeyLeftBracket)
KeyBackslash = Button(glfw.KeyBackslash)
KeyRightBracket = Button(glfw.KeyRightBracket)
KeyGraveAccent = Button(glfw.KeyGraveAccent)
KeyWorld1 = Button(glfw.KeyWorld1)
KeyWorld2 = Button(glfw.KeyWorld2)
KeyEscape = Button(glfw.KeyEscape)
KeyEnter = Button(glfw.KeyEnter)
KeyTab = Button(glfw.KeyTab)
KeyBackspace = Button(glfw.KeyBackspace)
KeyInsert = Button(glfw.KeyInsert)
KeyDelete = Button(glfw.KeyDelete)
KeyRight = Button(glfw.KeyRight)
KeyLeft = Button(glfw.KeyLeft)
KeyDown = Button(glfw.KeyDown)
KeyUp = Button(glfw.KeyUp)
KeyPageUp = Button(glfw.KeyPageUp)
KeyPageDown = Button(glfw.KeyPageDown)
KeyHome = Button(glfw.KeyHome)
KeyEnd = Button(glfw.KeyEnd)
KeyCapsLock = Button(glfw.KeyCapsLock)
KeyScrollLock = Button(glfw.KeyScrollLock)
KeyNumLock = Button(glfw.KeyNumLock)
KeyPrintScreen = Button(glfw.KeyPrintScreen)
KeyPause = Button(glfw.KeyPause)
KeyF1 = Button(glfw.KeyF1)
KeyF2 = Button(glfw.KeyF2)
KeyF3 = Button(glfw.KeyF3)
KeyF4 = Button(glfw.KeyF4)
KeyF5 = Button(glfw.KeyF5)
KeyF6 = Button(glfw.KeyF6)
KeyF7 = Button(glfw.KeyF7)
KeyF8 = Button(glfw.KeyF8)
KeyF9 = Button(glfw.KeyF9)
KeyF10 = Button(glfw.KeyF10)
KeyF11 = Button(glfw.KeyF11)
KeyF12 = Button(glfw.KeyF12)
KeyF13 = Button(glfw.KeyF13)
KeyF14 = Button(glfw.KeyF14)
KeyF15 = Button(glfw.KeyF15)
KeyF16 = Button(glfw.KeyF16)
KeyF17 = Button(glfw.KeyF17)
KeyF18 = Button(glfw.KeyF18)
KeyF19 = Button(glfw.KeyF19)
KeyF20 = Button(glfw.KeyF20)
KeyF21 = Button(glfw.KeyF21)
KeyF22 = Button(glfw.KeyF22)
KeyF23 = Button(glfw.KeyF23)
KeyF24 = Button(glfw.KeyF24)
KeyF25 = Button(glfw.KeyF25)
KeyKP0 = Button(glfw.KeyKP0)
KeyKP1 = Button(glfw.KeyKP1)
KeyKP2 = Button(glfw.KeyKP2)
KeyKP3 = Button(glfw.KeyKP3)
KeyKP4 = Button(glfw.KeyKP4)
KeyKP5 = Button(glfw.KeyKP5)
KeyKP6 = Button(glfw.KeyKP6)
KeyKP7 = Button(glfw.KeyKP7)
KeyKP8 = Button(glfw.KeyKP8)
KeyKP9 = Button(glfw.KeyKP9)
KeyKPDecimal = Button(glfw.KeyKPDecimal)
KeyKPDivide = Button(glfw.KeyKPDivide)
KeyKPMultiply = Button(glfw.KeyKPMultiply)
KeyKPSubtract = Button(glfw.KeyKPSubtract)
KeyKPAdd = Button(glfw.KeyKPAdd)
KeyKPEnter = Button(glfw.KeyKPEnter)
KeyKPEqual = Button(glfw.KeyKPEqual)
KeyLeftShift = Button(glfw.KeyLeftShift)
KeyLeftControl = Button(glfw.KeyLeftControl)
KeyLeftAlt = Button(glfw.KeyLeftAlt)
KeyLeftSuper = Button(glfw.KeyLeftSuper)
KeyRightShift = Button(glfw.KeyRightShift)
KeyRightControl = Button(glfw.KeyRightControl)
KeyRightAlt = Button(glfw.KeyRightAlt)
KeyRightSuper = Button(glfw.KeyRightSuper)
KeyMenu = Button(glfw.KeyMenu)
KeyLast = Button(glfw.KeyLast)
)
func (w *Window) initInput() {
pixelgl.Do(func() {
w.window.SetMouseButtonCallback(func(_ *glfw.Window, button glfw.MouseButton, action glfw.Action, mod glfw.ModifierKey) {
switch action {
case glfw.Press:
w.currInp.buttons[Button(button)] = true
case glfw.Release:
w.currInp.buttons[Button(button)] = false
}
})
w.window.SetKeyCallback(func(_ *glfw.Window, key glfw.Key, scancode int, action glfw.Action, mods glfw.ModifierKey) {
switch action {
case glfw.Press:
w.currInp.buttons[Button(key)] = true
case glfw.Release:
w.currInp.buttons[Button(key)] = false
}
})
w.window.SetScrollCallback(func(_ *glfw.Window, xoff, yoff float64) {
w.currInp.scroll += V(xoff, yoff)
})
})
}
func (w *Window) updateInput() {
// copy temp to prev
w.prevInp = w.tempInp
// zero current scroll (but keep what was added in callbacks outside of this function)
w.currInp.scroll -= w.tempInp.scroll
// get events (usually calls callbacks, but callbacks can be called outside too)
pixelgl.Do(func() {
glfw.PollEvents()
})
// cache current state to temp (so that if there are callbacks outside this function,
// everything works)