Hands On DarkBASIC Pro - Digital Skills

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FIG-31.15 The Result of Moving the Cube to (9,0,0) LISTING-31.2 Moving the Cube y-axis LISTING-31.2 is a modification of the previous listing which moves the cube to position (9,0,0) after the user presses a key. The new lines have been highlighted. REM *** Set display resolution and backdrop *** SET DISPLAY MODE 1280,1024,32 COLOR BACKDROP 0 BACKDROP ON REM *** Make the cube ** MAKE OBJECT CUBE 1, 10 REM *** Move cube to (9,0,0) after key press *** WAIT KEY POSITION OBJECT 1,9,0,0 REM *** End program *** WAIT KEY END Activity 31.4 Modify your previous program to match that given in LISTING-31.2. Add the lines The centre of the cube is at (9,0,0) z-axis x-axis REM *** Move the cube backwards *** WAIT KEY POSITION OBJECT 1, 9,0,30 so that the object is moved for a second time. Notice that, in its final position, the cube looks smaller since it has now moved further away from our viewing position. DarkBASIC Pro: 3D Primitives 763
FIG-31.16 The MOVE OBJECT Statement Activity 31.5 Write a program (object3D02.dbpro) to create the following objects, and then position each as specified: Object Number Object Type Dimensions Final Position 1 CUBE 4 9,0,0 2 BOX 10,15,5 -60,0,100 3 SPHERE 7 -30,-40,50 4 CYLINDER 12 25,0,120 5 CONE 12 0,25,100 Add a WAIT KEY statement between each move. The screen should appear as shown below. The MOVE OBJECT Statement The MOVE OBJECT statement can be used to move an object a specified distance from its current location. There are four possible directions available: RIGHT, LEFT, UP and DOWN. The statement has the format shown in FIG-31.16. In the diagram: Screen at Start Screen at End { } UP DOWN MOVE OBJECT objno , dist LEFT RIGHT UP, DOWN, LEFT, RIGHT One of these keywords must be used to indicate in which direction the object is to be moved. objno is an integer value giving the ID of the object to be moved. 764 DarkBASIC Pro: 3D Primitives
Page 1 and 2: Hands On DarkBASIC Pro A Self-Study
Page 3 and 4: Copyright © Alistair Stewart 2006
Page 5 and 6: The TURN OBJECT Statement . . . . .
Page 7 and 8: The YROTATE CAMERA Statement . . .
Page 9 and 10: Chapter 35 Meshes and Limbs Meshes.
Page 11 and 12: The OBJECT IN SCREEN Statement . .
Page 13 and 14: The MAKE OBJECT COLLISION BOX State
Page 15 and 16: Adding MoveElevator() . . . . . . .
Page 17 and 18: The RANDOMIZE MATRIX Statement . .
Page 19 and 20: The MAKE MEMBLOCK FROM SOUND Statem
Page 21 and 22: The TRANSPOSE MATRIX4 Statement . .
Page 23 and 24: Networking the Game . . . . . . . .
Page 25 and 26: Acknowledgements I would like to th
Page 27 and 28: Syntax Diagrams make only a half-he
Page 29 and 30: The 3D World Introduction The Coord
Page 31 and 32: FIG-30.4 Points Determining the Pos
Page 33 and 34: FIG-30.6 Rotation A Cuboid is Rotat
Page 35 and 36: FIG-30.13 Varying the Polygons in a
Page 37 and 38: FIG-30.17 Lights Surface Normals FI
Page 39 and 40: � Space within the 3D world is me
Page 41 and 42: 3D Primitives Introduction FIG-31.1
Page 43 and 44: FIG-31.5 The MAKE OBJECT BOX Statem
Page 45 and 46: FIG-31.9 The MAKE OBJECT CONE State
Page 47: FIG-31.13 Creating a Triangle Objec
Page 51 and 52: FIG-31.19 Possible Rotations about
Page 53 and 54: LISTING-31.3 Rotating an Object abo
Page 55 and 56: FIG-31.29 The PITCH OBJECT Statemen
Page 57 and 58: FIG-31.32 The POINT OBJECT Statemen
Page 59 and 60: LISTING-31.6 (continued) Local Axes
Page 61 and 62: LISTING-31.7 Resizing an Object REM
Page 63 and 64: Copying a 3D Object FIG-31.43 The C
Page 65 and 66: FIG-31.46 FIG-31.47 The OBJECT POSI
Page 67 and 68: FIG-31.49 The OBJECT ANGLE Statemen
Page 69 and 70: LISTING-31.11 (continued) Switching
Page 71 and 72: FIG-31.53 The SET GLOBAL OBJECT CRE
Page 73 and 74: Merging Primitives Introduction FIG
Page 75 and 76: FIG-31.58 As you've just discovered
Page 77 and 78: Solutions Activity 31.1 No solution
Page 79 and 80: Activity 31.20 The duplicated cube
Page 81 and 82: 796 DarkBASIC Pro: 3D Primitives
Page 83 and 84: Adding Texture Introduction FIG-32.
Page 85 and 86: FIG-32.3 An Image with Added Mipmap
Page 87 and 88: FIG-32.5 Floor Texturing FIG-32.6 T
Page 89 and 90: Seamless Tiling FIG-32.10 A Visible
Page 91 and 92: FIG-32.12 The PLAY ANIMATION TO IMA
Page 93 and 94: LISTING-32.6 (continued) Using the
Page 95 and 96: The SET OBJECT TRANSPARENCY Stateme
Page 97 and 98: LISTING-32.9 Using a Secondary Text
Page 99 and 100:
LISTING-32.10 (continued) Using the
Page 101 and 102:
FIG-32.24 A Transparent Cube Activi
Page 103 and 104:
FIG-32.27 The FADE OBJECT Statement
Page 105 and 106:
Images with an Alpha Channel Introd
Page 107 and 108:
Creating a Complex 3D Shape Introdu
Page 109 and 110:
The Code LISTING-32.15 Drawing the
Page 111 and 112:
LISTING-32.15 (continued) Drawing t
Page 113 and 114:
Sky Spheres FIG-32.32 Using a Sky S
Page 115 and 116:
Summary To cure the problem of an i
Page 117 and 118:
REM *** Create and texture plain ob
Page 119:
TEXTURE OBJECT GroundObj,CobbleImg
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