The Ring programming language version 1.5.3 book - Part 69 of 184

Ring Documentation, Release 1.5.3
glTexCoord2f(1.0, 1.0) glVertex3f(-1.0, -1.0, -1.0)
glTexCoord2f(0.0, 1.0) glVertex3f( 1.0, -1.0, -1.0)
glTexCoord2f(0.0, 0.0) glVertex3f( 1.0, -1.0, 1.0)
glTexCoord2f(1.0, 0.0) glVertex3f(-1.0, -1.0, 1.0)
// Right face
glTexCoord2f(1.0, 1.0) glVertex3f( 1.0, 1.0, -1.0)
glTexCoord2f(0.0, 1.0) glVertex3f( 1.0, 1.0, 1.0)
// Left Face
glTexCoord2f(1.0, 1.0) glVertex3f(-1.0, 1.0, 1.0)
glTexCoord2f(0.0, 1.0) glVertex3f(-1.0, 1.0, -1.0)
glEnd()
class GraphicsAppBase
display event_queue ev timeout
timer redraw = true
FPS = 60
SCREEN_W = 800
SCREEN_H = 600
KEY_UP = 1
KEY_DOWN = 2
KEY_LEFT = 3
KEY_RIGHT = 4
Key = [false,false,false,false]
TITLE = "Graphics Application"
func start
SetUp()
loadResources()
eventsLoop()
destroy()
func setup
al_init()
al_init_image_addon()
al_set_new_display_flags(ALLEGRO_OPENGL)
display = al_create_display(SCREEN_W,SCREEN_H)
al_set_Window_title(display,TITLE)
al_clear_to_color(al_map_rgb(0,0,0))
event_queue = al_create_event_queue()
al_register_event_source(event_queue,
al_get_display_event_source(display))
ev = al_new_allegro_event()
timeout = al_new_allegro_timeout()
55.2. Many Cubes 555

al_init_timeout(timeout, 0.06)
timer = al_create_timer(1.0 / FPS)
al_get_timer_event_source(timer))
al_start_timer(timer)
al_install_mouse()
al_get_mouse_event_source())
al_install_keyboard()
al_get_keyboard_event_source())
func eventsLoop
while true
al_wait_for_event_until(event_queue, ev, timeout)
switch al_get_allegro_event_type(ev)
on ALLEGRO_EVENT_DISPLAY_CLOSE
exit
on ALLEGRO_EVENT_TIMER
redraw = true
on ALLEGRO_EVENT_MOUSE_AXES
mouse_x = al_get_allegro_event_mouse_x(ev)
mouse_y = al_get_allegro_event_mouse_y(ev)
on ALLEGRO_EVENT_MOUSE_ENTER_DISPLAY
mouse_x = al_get_allegro_event_mouse_x(ev)
mouse_y = al_get_allegro_event_mouse_y(ev)
on ALLEGRO_EVENT_MOUSE_BUTTON_UP
exit
on ALLEGRO_EVENT_KEY_DOWN
switch al_get_allegro_event_keyboard_keycode(ev)
on ALLEGRO_KEY_UP
key[KEY_UP] = true
on ALLEGRO_KEY_DOWN
key[KEY_DOWN] = true
on ALLEGRO_KEY_LEFT
key[KEY_LEFT] = true
on ALLEGRO_KEY_RIGHT
key[KEY_RIGHT] = true
off
on ALLEGRO_EVENT_KEY_UP
switch al_get_allegro_event_keyboard_keycode(ev)
on ALLEGRO_KEY_UP
key[KEY_UP] = false
on ALLEGRO_KEY_DOWN
key[KEY_DOWN] = false
on ALLEGRO_KEY_LEFT
key[KEY_LEFT] = false
on ALLEGRO_KEY_RIGHT
key[KEY_RIGHT] = false
on ALLEGRO_KEY_ESCAPE
exit
off
off
if redraw and al_is_event_queue_empty(event_queue)
redraw = false
drawScene()
al_flip_display()

ok
callgc()
end
func destroy
destroyResources()
al_destroy_timer(timer)
al_destroy_allegro_event(ev)
al_destroy_allegro_timeout(timeout)
al_destroy_event_queue(event_queue)
al_destroy_display(display)
al_exit()
func loadresources
func drawScene
func destroyResources
Screen Shot:

55.3 TicTacToe 3D Game
Source Code:
# Load Libraries
load "gamelib.ring" # RingAllegro Library
load "opengl21lib.ring" # RingOpenGL Library
#==============================================================
# To Support MacOS X
al_run_main()
func al_game_start # Called by al_run_main()
main() # Now we call our main function
#==============================================================
func main
new TicTacToe3D {
start()
}
class TicTacToe3D from GameLogic
FPS = 60
TITLE = "TicTacToe 3D"
oBackground = new GameBackground
oGameSound = new GameSound
oGameCube = new GameCube
oGameOver = new GameOver
oGameInterface = new GameInterface
func loadresources
oGameOver.loadresources()
oGameSound.loadresources()
oBackGround.loadresources()
oGameCube.loadresources()
oGameOver.destroyResources()
oGameSound.destroyResources()
oBackGround.destroyResources()
oGameCube.destroyResources()
func drawScene
oBackground.update()
oGameInterface.update(self)
func MouseClickEvent
oGameInterface.MouseClickEvent(self)
class GameInterface
func Update oGame
prepare()
cubes(oGame)
func Prepare
w = 1024 h = 768
55.3. TicTacToe 3D Game 558

ratio = w / h
glViewport(0, 0, w, h)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
gluPerspective(-120,ratio,1,120)
glMatrixMode(GL_MODELVIEW)
glLoadIdentity()
glEnable(GL_TEXTURE_2D)
glShadeModel(GL_SMOOTH)
glClearColor(0.0, 0.0, 0.0, 0.5)
glClearDepth(1.0)
glEnable(GL_DEPTH_TEST)
glEnable(GL_CULL_FACE)
glDepthFunc(GL_LEQUAL)
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST)
func Cubes oGame
oGame.oGameCube {
aGameMap = oGame.aGameMap
cube( 5 , -3 , -5 , aGameMap[1][1] )
cube( 0 , -3 , -5 , aGameMap[1][2] )
cube( -5 , -3 , -5 , aGameMap[1][3] )
cube( 5 , 1 , -5 , aGameMap[2][1] )
cube( 0 , 1 , -5 , aGameMap[2][2] )
cube( -5 , 1 , -5 , aGameMap[2][3] )
cube( 5 , 5 , -5 , aGameMap[3][1] )
cube( 0 , 5 , -5 , aGameMap[3][2] )
cube( -5 , 5 , -5 , aGameMap[3][3] )
rotate()
}
func MouseClickEvent oGame
oGame {
aBtn = Point2Button(Mouse_X,Mouse_Y)
nRow = aBtn[1]
nCol = aBtn[2]
if nRow != 0 and nCol != 0
if aGameMap[nRow][nCol] = :n
aGameMap[nRow][nCol] = cActivePlayer
ChangeActivePlayer()
CheckGameOver()
ok
ok
}
Class GameLogic from GraphicsAppBase
aGameMap = [
[ :n , :n , :n ] ,
[ :n , :n , :n ] ,
[ :n , :n , :n ]
]
aGameButtons = [ # x1,y1,x2,y2
[176,88,375,261], # [1,1]
[423,88,591,261], # [1,2]
[645,88,876,261], # [1,3]
[176,282,375,428], # [2,1]

[423,282,591,428], # [2,2]
[645,282,876,428], # [2,3]
[176,454,375,678], # [3,1]
[423,454,591,678], # [3,2]
[645,454,876,678] # [3,3]
]
cActivePlayer = :x
func point2button x,y
nRow = 0
nCol = 0
for t = 1 to len(aGameButtons)
rect = aGameButtons[t]
if x >= rect[1] and x <= rect[3] and
y >= rect[2] and y <= rect[4]
switch t
on 1 nRow = 1 nCol = 1
off
exit
ok
next
return [nRow,nCol]
func ChangeActivePlayer()
if cActivePlayer = :x
cActivePlayer = :o
else
cActivePlayer = :x
ok
func CheckGameOver
aList = [
aGameMap[1][1],
aGameMap[1][2],
aGameMap[1][3],
aGameMap[2][1],
aGameMap[2][2],
aGameMap[2][3],
aGameMap[3][1],
aGameMap[3][2],
aGameMap[3][3]
]
for item in aList
switch item
on :x item = 1
on :o item = 2
on :n item = 0
off
next

nStatus = CheckWinner(aList)
if nStatus
oGameOver {
Switch nStatus
on 1 Player1Win(this)
on 2 Player2Win(this)
on 3 NoOneWin(this)
off
}
refreshGame()
ok
func refreshGame
aGameMap = [
[ :n , :n , :n ] ,
[ :n , :n , :n ] ,
[ :n , :n , :n ]
]
cActivePlayer = :x
func CheckWinner lst
//vertical check
for v=1 to 9 step 3
if lst[v]!=0 and lst[v+1]!=0 and lst[v+2]!=0
if lst[v]=lst[v+1] and lst[v+1]=lst[v+2]
return lst[v]
ok
ok
next
//horzintal
for h=1 to 3
if lst[h]!=0 and lst[h+3]!=0 and lst[h+6]!=0
if lst[h]=lst[h+3] and lst[h+3]=lst[h+6]
return lst[h]
ok
ok
next
//Cross
if lst[1]!=0 and lst[5]!=0 and lst[9]!=0
if lst[1]=lst[5] and lst[5]=lst[9] return lst[1] ok
ok
if lst[3]!=0 and lst[5]!=0 and lst[7]!=0
if lst[3]=lst[5] and lst[5]=lst[7] return lst[3] ok
ok
//tie
tie=true
for i=1 to 9
if lst[i]=0 tie=false exit ok
next
if tie=true return 3 ok return 0
class GameOver
font bitmap
func loadresources

font = al_load_ttf_font("font/pirulen.ttf",54,0 )
bitmap = al_load_bitmap("image/ballon.png")
al_destroy_bitmap(bitmap)
al_destroy_font(font)
func Player1Win oGame
showMsg(oGame,80,430,"Good job X you won!")
func Player2Win oGame
showMsg(oGame,80,430,"Good job O you won!")
func NoOneWin oGame
showMsg(oGame,150,430,"Oh no it's a tie!")
func ShowMsg oGame,x,y,cMsg
oGame {
drawScene()
al_flip_display()
al_rest(0.3)
newdisplay = al_create_display(SCREEN_W,SCREEN_H)
al_set_window_title(newdisplay,TITLE)
al_clear_to_color(al_map_rgb(255,255,255))
al_draw_bitmap(this.bitmap,200,50,1)
al_draw_text(this.font,
al_map_rgb(0,0,255), x,y,
ALLEGRO_ALIGN_LEFT,cMsg)
al_flip_display()
al_rest(2)
al_destroy_display(newdisplay)
al_set_target_backbuffer(display)
}
class GameCube
bitmap bitmap2 bitmap3
textureX textureO textureN
xrot = 0.0
yrot = 0.0
zrot = 0.0
func loadresources
bitmap = al_load_bitmap("image/o.png")
textureO = al_get_opengl_texture(bitmap)
bitmap2 = al_load_bitmap("image/x.png")
textureX = al_get_opengl_texture(bitmap2)
bitmap3 = al_load_bitmap("image/empty.png")
textureN = al_get_opengl_texture(bitmap3)
al_destroy_bitmap(bitmap2)
al_destroy_bitmap(bitmap3)
func cube(x,y,z,nTexture)
glLoadIdentity()

glTranslatef(x,y,z)
glRotatef(xrot,1.0,0.0,0.0)
glRotatef(yrot,0.0,1.0,0.0)
glRotatef(zrot,0.0,0.0,1.0)
setCubeTexture(nTexture)
drawCube()
func setCubeTexture cTexture
switch cTexture
on :x
glBindTexture(GL_TEXTURE_2D, textureX)
on :o
glBindTexture(GL_TEXTURE_2D, textureO)
on :n
glBindTexture(GL_TEXTURE_2D, textureN)
off
func Rotate
xrot += 0.3 * 5
yrot += 0.2 * 5
zrot += 0.4 * 5
func drawcube
glBegin(GL_QUADS)
// Front Face
// Back Face
// Top Face
// Bottom Face
// Right face
// Left Face
glEnd()

class GameBackground
nBackX = 0
nBackY = 0
nBackDiffx = -1
nBackDiffy = -1
nBackMotion = 1
aBackMotionList = [
[ -1, -1 ] , # Down - Right
[ 0 , 1 ] , # Up
[ -1, -1 ] , # Down - Right
[ 0 , 1 ] , # Up
[ 1 , -1 ] , # Down - Left
[ 0 , 1 ] , # Up
[ 1 , -1 ] , # Down - Left
[ 0 , 1 ] # Up
]
bitmap
func Update
draw()
motion()
func draw
al_draw_bitmap(bitmap,nBackX,nBackY,1)
func motion
nBackX += nBackDiffx
nBackY += nBackDiffy
if (nBackY = -350) or (nBackY = 0)
nBackMotion++
if nBackMotion > len(aBackMotionList)
nBackMotion = 1
ok
nBackDiffx = aBackMotionList[nBackMotion][1]
nBackDiffy = aBackMotionList[nBackMotion][2]
ok
func loadResources
bitmap = al_load_bitmap("image/back.jpg")
class GameSound
sample sampleid
func loadresources
sample = al_load_sample( "sound/music1.wav" )
sampleid = al_new_allegro_sample_id()
al_play_sample(sample, 1.0, 0.0,1.0,ALLEGRO_PLAYMODE_LOOP,sampleid)
al_destroy_allegro_sample_id(sampleid)
al_destroy_sample(sample)

The Ring programming language version 1.5.3 book - Part 69 of 184

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The Ring programming language version 1.5.3 book - Part 69 of 184