The Ring programming language version 1.9 book - Part 63 of 210

1. Ring Documentation, Release 1.9
on 5
oGame.aObjects[2].aMap[nRow][nCol] = 0
oGameState.DoorKey = true
oGameState.Score += 500
checkopenwall(oGame)
oGame { Sound {
once = true
file = "sound/sfx_point.wav"
} }
off
func checkstarskeycol oGame,oSelf
nValue = oGame.aObjects[2].getvalue(oSelf.x,oSelf.y)
nRow = oGame.aObjects[2].getrow(oSelf.x,oSelf.y)
nCol = oGame.aObjects[2].getcol(oSelf.x,oSelf.y)
checkstarskey(oGame,oSelf,nValue,nRow,nCol)
nValue = oGame.aObjects[2].getvalue(oSelf.x+oSelf.width,oSelf.y+oSelf.height)
nRow = oGame.aObjects[2].getrow(oSelf.x+oSelf.width,oSelf.y+oSelf.height)
nCol = oGame.aObjects[2].getcol(oSelf.x+oSelf.width,oSelf.y+oSelf.height)
checkstarskey(oGame,oSelf,nValue,nRow,nCol)
nValue = oGame.aObjects[2].getvalue(oSelf.x+oSelf.width,oSelf.y)
nRow = oGame.aObjects[2].getrow(oSelf.x+oSelf.width,oSelf.y)
nCol = oGame.aObjects[2].getcol(oSelf.x+oSelf.width,oSelf.y)
checkstarskey(oGame,oSelf,nValue,nRow,nCol)
nValue = oGame.aObjects[2].getvalue(oSelf.x,oSelf.y+oSelf.height)
nRow = oGame.aObjects[2].getrow(oSelf.x,oSelf.y+oSelf.height)
nCol = oGame.aObjects[2].getcol(oSelf.x,oSelf.y+oSelf.height)
checkstarskey(oGame,oSelf,nValue,nRow,nCol)
func callenemystate oGame
for t in oGame.aObjects
t {
if type = GE_TYPE_ENEMY
call state(oGame,t)
ok
}
next
Class GameState
down = 3
gameresult = false
Score = 0
startplay=false
lastcol = 0
playerwin = false
DoorKey = false
playerindex = 4
value = 1000
moveplayer = false
Screen Shot:
59.29. Super Man 2016 Game 589

2. Ring Documentation, Release 1.9
59.29. Super Man 2016 Game 590

3. CHAPTER
SIXTY
BUILDING GAMES FOR ANDROID
In this chapter we will learn about Building RingLibSDL Games for Mobile.
So we can create packages (*.apk) for the applications that are developed using Ring Game Engine for 2D Games.
60.1 Download Requirements and Update the Android SDK
• The Android SDK Tools
https://developer.android.com/studio/index.html
• The Android NDK (Tested using android-ndk-r10c)
https://developer.android.com/ndk/index.html
• Apache Ant v1.8 or later
http://ant.apache.org/bindownload.cgi
• Java SE Development Kit (JDK) v6 or later
http://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html
• Update the Android SDK to get the API and tools packages required for development
Tested using Android 4.4.2 (API 19)
• In Windows - Define the next Environment Variables based on your system.
1. JAVA_HOME
For Example : C:Program Files (x86)Javajdk1.8.0_05
2. ANDROID_HOME
For Example : B:mahmoudToolsJava-Androidadt-bundle-windows-x86-20140702sdk
60.2 Project Folder
Open the project folder : ring/android/ringlibsdl/project
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4. Ring Documentation, Release 1.9
You can add the source code (*.ring) and Images/Sound Files to the assets folder.
You will find the Flappy Bird 3000 Game ready for building.
The execution starts from the start.ring file
load "game2.ring"
60.3 Building the project
Move to the ring/android/ringlibsdl/project folder
We can build using the next command (We need to do this for one time only).
ndk-build
Then we can create the package (*.apk) using the next command.
60.3. Building the project 592

5. Ring Documentation, Release 1.9
ant debug
60.3. Building the project 593

6. CHAPTER
SIXTYONE
USING RINGOPENGL AND RINGFREEGLUT FOR 3D GRAPHICS
In this chapter we will learn about using RingOpenGL
61.1 Samples Source (Authors)
The samples in this chapter are based on C Tutorials
from
1. http://www.lighthouse3d.com/tutorials/glut-tutorial/
2. http://www.wikihow.com/Make-a-Cube-in-OpenGL
61.2 What is RingOpenGL?
RingOpenGL contains the Ring binding to the OpenGL library
You can learn about OpenGL from : https://www.opengl.org/
RingOpenGL comes with support for the next versions
• OpenGL 1.1
• OpenGL 1.2
• OpenGL 1.3
• OpenGL 1.4
• OpenGL 1.5
• OpenGL 2.0
• OpenGL 2.1
• OpenGL 3.0
• OpenGL 3.2
• OpenGL 3.3
• OpenGL 4.0
• OpenGL 4.1
• OpenGL 4.2
• OpenGL 4.3
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7. Ring Documentation, Release 1.9
• OpenGL 4.4
• OpenGL 4.5
• OpenGL 4.6
For example, if you want to use OpenGL 2.1 then load RingOpenGL 2.1 library
load "opengl21lib.ring"
61.3 What is RingFreeGLUT?
RingFreeGLUT contains the Ring binding to the FreeGLUT library
You can learn about FreeGLUT from : http://freeglut.sourceforge.net/
To use the RingFreeGLUT library, Just load the library
load "freeglut.ring"
61.4 The First Window using RingFreeGLUT
Example:
load "freeglut.ring"
func main
glutInit()
glutInitDisplayMode(GLUT_SINGLE)
glutInitWindowSize(800, 600)
glutInitWindowPosition(100, 10)
glutCreateWindow("RingFreeGLUT - Test 1")
glutDisplayFunc(:displayCode)
glutMainLoop()
func displaycode
Screen Shot
61.3. What is RingFreeGLUT? 595

8. Ring Documentation, Release 1.9
61.5 Drawing using RingOpenGL
Example:
load "freeglut.ring"
load "opengl21lib.ring"
func main
glutInit()
glutInitDisplayMode(GLUT_SINGLE)
glutInitWindowSize(800, 600)
glutInitWindowPosition(100, 10)
glutCreateWindow("RingFreeGLUT - Test 2")
glutDisplayFunc(:displayCode)
glutMainLoop()
func displaycode
glClear(GL_COLOR_BUFFER_BIT)
glColor3f(0,255,0)
glBegin(GL_POLYGON)
glVertex3f(0.0, 0.0, 0.0)
61.5. Drawing using RingOpenGL 596

9. Ring Documentation, Release 1.9
glVertex3f(0.5, 0.0, 0.0)
glVertex3f(0.5, 0.5, 0.0)
glVertex3f(0.0, 0.5, 0.0)
glEnd()
glColor3f(255,0,0)
glBegin(GL_POLYGON)
glVertex3f(0.0, 0.0, 0.0)
glVertex3f(0.5, 0.0, 0.0)
glVertex3f(-0.5,- 1, 0.0)
glVertex3f(0.0, -1, 0.0)
glEnd()
glColor3f(0,0,255)
glBegin(GL_POLYGON)
glVertex3f(0.0, 0.0, 0.0)
glVertex3f(-0.5, 0.0, 0.0)
glVertex3f(-0.5,- 0.5, 0.0)
glVertex3f(0.0, -0.5, 0.0)
glEnd()
glFlush()
Screen Shot
61.5. Drawing using RingOpenGL 597

10. Ring Documentation, Release 1.9
61.6 The First Triangle
Example:
load "freeglut.ring"
load "opengl21lib.ring"
func main
glutInit()
glutInitDisplayMode(GLUT_DEPTH | GLUT_DOUBLE | GLUT_RGBA)
glutInitWindowSize(320,320)
glutInitWindowPosition(100, 10)
glutCreateWindow("RingFreeGLUT - Test 3")
glutDisplayFunc(:renderScene)
glutMainLoop()
func renderScene
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
glBegin(GL_TRIANGLES)
glVertex3f(-0.5,-0.5,0.0)
glVertex3f(0.5,0.0,0.0)
glVertex3f(0.0,0.5,0.0)
glEnd()
glutSwapBuffers()
Screen Shot
61.6. The First Triangle 598