Hier finden Sie die Quellcodes und benötigten Grafiken zum Geschicklichkeitsspiel „Lunar Lander“ aus dem Buch (Kapitel 3.3), damit Sie den langen Code nicht von Hand abtippen müssen.
Video des Gameplays:
Verwendete Grafiken: Download
Quellcode:
#import <UIKit/UIKit.h>
#import <CoreMotion/CoreMotion.h>
#import <QuartzCore/QuartzCore.h>
@interface lunarlanderViewController : UIViewController {
// Hintergrund
UIImageView *canvas;
// Raumgleiter
UIImageView *ship;
UIImageView *blast;
double shipSpeedX;
double shipSpeedY;
int leadfoot; // 1 = Vollgas
// Zielort (Design)
UIImageView *station;
// Zielort Landeplattform
UIImageView *platform;
// Head-up-Display
UIImageView *hud;
UIImageView *hud_oxygen;
UIImageView *hud_petrol;
UILabel *hud_level;
int level; // aktueller Level
double oxygen; // verbleibender Sauerstoff
double petrol; // verbleibender Treibstoff
// Array mit Landschaftsdaten
NSMutableArray *areaDesign;
CMMotionManager *motionManager;
bool normalAction; // NO = nicht bewegen
}
@property (nonatomic,strong) UIImageView *canvas;
@property (nonatomic,strong) UIImageView *ship;
@property (nonatomic, strong) UIImageView *blast;
@property (nonatomic, strong) UIImageView *station;
@property (nonatomic, strong) UIImageView *platform;
@property (nonatomic, strong) UIImageView *hud;
@property (nonatomic, strong) UIImageView *hud_oxygen;
@property (nonatomic, strong) UIImageView *hud_petrol;
@property (nonatomic, strong) UILabel *hud_level;
@property (nonatomic, strong) NSMutableArray *areaDesign;
@property (nonatomic, strong) CMMotionManager *motionManager;
- (void)restartLevel;
- (void)reduceOxygen;
- (void)missionFailed;
- (void)missionAccomplished;
- (void)gameEngine;
@end
#import "lunarlanderViewController.h"
#include "leveldesign.h"
#define maxLevel 7
@implementation lunarlanderViewController
@synthesize canvas, ship, blast, station, platform,
hud, hud_level, hud_oxygen, hud_petrol, areaDesign;
@synthesize motionManager;
-(void) restartLevel {
// beendet Explonsanimation, falls failed
[ship stopAnimating];
ship.alpha = 1.0;
blast.alpha = 1.0;
// Gelaendeteile positionieren
for (int i = 0; i < [areaDesign count]; i++) {
UIImage *tempImg = [UIImage alloc];
UIImageView *area = [areaDesign objectAtIndex:i];
if (areaW[level][i] ==1) tempImg = [UIImage imageNamed:@"area_50x50.png"];
if (areaW[level][i] ==2) tempImg = [UIImage imageNamed:@"area_130x130.png"];
area.frame = CGRectMake(0,0, tempImg.size.width, tempImg.size.height);
[area setImage:tempImg];
area.center = CGPointMake(areaX[level][i], areaY[level][i]);
}
station.frame = CGRectMake(stationX[level], stationY[level],140,60);
platform.frame = CGRectMake(stationX[level]+37, stationY[level]+53,68,7);
ship.center = CGPointMake(shipX[level], shipY[level]);
ship.transform = CGAffineTransformMakeRotation(0);
shipSpeedX = 0;
shipSpeedY = -0.1;
leadfoot = 0;
oxygen = 100;
petrol = 100;
normalAction = YES;
}
// zieht jede Sekunde 1 Zaehler vom Sauerstoff ab
-(void) reduceOxygen {
if (oxygen>0) oxygen--;
}
- (void)loadView {
// Statusleiste entfernen und Hintergrundbeleuchtung ein
[[UIApplication sharedApplication] setStatusBarHidden:YES];
[[UIApplication sharedApplication] setIdleTimerDisabled:YES];
level = 0;
// Hintergrundbild initialisieren
canvas = [[UIImageView alloc] initWithFrame:[[UIScreen mainScreen]
applicationFrame]];
canvas.image = [UIImage imageNamed:@"canvas.png"];
canvas.userInteractionEnabled = YES;
self.view = canvas;
// Felslandschaft initialisieren
areaDesign = [[NSMutableArray alloc] init];
for (int i = 0; i < sizeof(areaX[level])/sizeof(areaX[level][0]); i++) {
UIImageView *area = [[UIImageView alloc]
initWithFrame:CGRectMake(0,0,50,50)];
[areaDesign addObject:area];
[canvas addSubview:area];
}
// Design der Landeplattform initialisieren
station = [[UIImageView alloc] initWithFrame:CGRectMake(stationX[level],
stationY[level],
140, 60)];
station.animationImages = [NSArray arrayWithObjects:
[UIImage imageNamed:@"station0.png"],
[UIImage imageNamed:@"station.png"],
[UIImage imageNamed:@"station1.png"],
[UIImage imageNamed:@"station.png"],
nil];
station.animationDuration = 0.5;
station.animationRepeatCount = 0;
[station startAnimating];
[canvas addSubview:station];
// Landeplattform initialisieren
platform = [[UIImageView alloc] initWithFrame:CGRectMake(stationX[level]+37,
stationY[level]+53,
68, 7)];
platform.image = [UIImage imageNamed:@"platform.png"];
[canvas addSubview:platform];
// Duesenanimation initialisieren
blast = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 35, 12)];
blast.animationImages = [NSArray arrayWithObjects:
[UIImage imageNamed:@"fireblast0.png"],
[UIImage imageNamed:@"fireblast1.png"],
[UIImage imageNamed:@"fireblast2.png"],
nil];
blast.animationDuration = 0.1;
blast.animationRepeatCount = 0;
blast.hidden = YES;
[blast startAnimating];
[canvas addSubview:blast];
// Raumgleiter initialisieren
ship = [[UIImageView alloc] initWithFrame:CGRectMake(shipX[level],
shipY[level],
47, 43)];
ship.image = [UIImage imageNamed:@"ship.png"];
// Explosionsanimation hinzufuegen
ship.animationImages = [NSArray arrayWithObjects:
[UIImage imageNamed:@"explosion0.png"],
[UIImage imageNamed:@"explosion1.png"],
[UIImage imageNamed:@"explosion2.png"],
nil];
ship.animationDuration = 0.3;
ship.animationRepeatCount = 0;
[canvas addSubview:ship];
// Head-Up-Information initialisieren
hud_level = [[UILabel alloc] initWithFrame:CGRectMake(0, 1, 19, 30)];
hud_level.backgroundColor = [UIColor clearColor];
hud_level.text = @"";
hud_level.textAlignment = UITextAlignmentRight;
hud_level.font = [UIFont fontWithName:@"Helvetica" size: 22.0];
hud_level.textColor = [UIColor whiteColor];
[canvas addSubview:hud_level];
hud_oxygen = [[UIImageView alloc] initWithFrame:CGRectMake(30, 9, 50, 5)];
hud_oxygen.backgroundColor = [UIColor colorWithRed:0 green:0.75
blue:1 alpha:1];
[canvas addSubview:hud_oxygen];
hud_petrol = [[UIImageView alloc] initWithFrame:CGRectMake(30, 19, 50, 5)];
hud_petrol.backgroundColor = [UIColor colorWithRed:0.75 green:0.5
blue:0.75 alpha:1];
[canvas addSubview:hud_petrol];
hud = [[UIImageView alloc] initWithFrame:CGRectMake(21, 7, 61, 19)];
hud.image = [UIImage imageNamed:@"hud.png"];
[canvas addSubview:hud];
// automatischen Countdown als Timer einrichten
[NSTimer scheduledTimerWithTimeInterval:0.3
target: self
selector:@selector(reduceOxygen)
userInfo:nil
repeats:YES];
// Accelerometer initialisieren
motionManager = [[CMMotionManager alloc] init];
motionManager.accelerometerUpdateInterval = 0.060;
[motionManager startAccelerometerUpdates];
// Level generieren
[self restartLevel];
// gameEngine als Intervall starten
CADisplayLink *callGameEngine = [CADisplayLink
displayLinkWithTarget:self
selector:@selector(gameEngine)];
[callGameEngine setFrameInterval:2];
[callGameEngine addToRunLoop:[NSRunLoop currentRunLoop]
forMode:NSDefaultRunLoopMode];
}
-(void) missionFailed {
// keine Interaktion mehr
normalAction = NO;
// Explosionsanimation starten
[ship startAnimating];
// Fallen und Rotieren animieren
[UIView transitionWithView:self.view
duration:2.0
options:UIViewAnimationOptionCurveEaseIn animations:^{
ship.center = CGPointMake(ship.center.x, 520);
ship.alpha = 0.0;
ship.transform = CGAffineTransformMakeRotation(3.14);
} completion:nil];
// Level Neustart
[self performSelector:@selector(restartLevel) withObject:nil afterDelay:2.5];
}
-(void) missionAccomplished {
// Unsichtbar werden
[UIView transitionWithView:self.view
duration:2.0
options:UIViewAnimationOptionCurveEaseIn animations:^{
normalAction = NO;
ship.alpha = 0.0;
blast.alpha = 0.0;
} completion:^(BOOL finished) {
// naechster Level (wenn hoechster Level, dann von vorne)
level = (level+1) % maxLevel;
[self restartLevel];
}];
}
-(void) gameEngine {
// nur durchfuehren, wenn gerade keine Explosion oder Landung
if (normalAction) {
// Head-Up-Display
hud_level.text = [NSString stringWithFormat:@"%d", level+1];
hud_oxygen.frame = CGRectMake(30, 9, oxygen/2, 5);
hud_petrol.frame = CGRectMake(30, 19, petrol/2, 5);
// seitliche Steuerung ueber Accelerometer
CMAccelerometerData *acceleration = motionManager.accelerometerData;
shipSpeedX += acceleration.acceleration.x/15;
// Schwerkraft
if (normalAction) shipSpeedY += 0.015;
// Spieler gibt Gas
if ((leadfoot == 1) && (petrol>0)) shipSpeedY -= 0.05;
// Kollision mit Spielfeldrand -> abprallen
if ( (ship.center.x+shipSpeedX>320) || (ship.center.x+shipSpeedX<0) ) {
shipSpeedX = -shipSpeedX/2;
}
// Kollision mit Boden -> Explosion
if (ship.center.y+shipSpeedY>440) [self missionFailed];
// Kollision mit Gelaende -> Explosion
for(int i = 0; i < [areaDesign count]; i++) {
UIImageView *area = [areaDesign objectAtIndex:i];
if ( // Pythagoras zur Abstandsmessung
(area.center.x-ship.center.x) * (area.center.x-ship.center.x)+
(area.center.y-ship.center.y) * (area.center.y-ship.center.y)<
(area.bounds.size.width/2 + 20) * (area.bounds.size.width/2 + 20))
[self missionFailed];
}
// Landung bei langsamer Geschwindigkeit? -> naechster Level!
if (CGRectIntersectsRect(ship.frame, platform.frame)) {
if ((shipSpeedX>-0.8) &&
(shipSpeedX<0.8) &&
(shipSpeedY<0.8) &&
(shipSpeedY >= 0)) {
[self missionAccomplished];
}
// sonst -> Explosion
else [self missionFailed];
}
// Countdown vorbei? -> Explosion
if (oxygen == 0) [self missionFailed];
// Raumschiff darstellen
ship.center = CGPointMake(ship.center.x+shipSpeedX,
ship.center.y+shipSpeedY);
// Duesen darstellen, wenn Spieler Gas gibt
if ((leadfoot == 1) & (petrol>0)) {
petrol -= 0.25;
blast.center = CGPointMake(ship.center.x, ship.center.y+26);
blast.hidden = NO;
}
else blast.hidden = YES;
}
}
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
leadfoot = 1;
}
-(void) touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
leadfoot = 0;
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
}
- (void)viewDidUnload {
}
@end
extern int areaX[7][14];
extern int areaY[7][14];
extern int areaW[7][14];
extern int stationX[7];
extern int stationY[7];
extern int shipX[7];
extern int shipY[7];
@interface leveldesign : NSObject {}
@end
#import "leveldesign.h"
int areaX[7][14]={
{66,292,48,315,197,348,273,-43,90,323,3,245,30,318},
{268,310,14,248,51,268,56,345,28,310,260,303,6,36},
{11,253,47,261,120,308,265,109,2,53,269,304,-3,327},
{48,201,304,307,100,97,10,197,278,28,108,41,305,256},
{168,125,308,13,244,154,78,287,110,183,35,42,67,304},
{110,40,108,253,215,114,281,55,183,136,138,-12,117,318},
{208,236,-3,169,158,136,131,-26,276,305,26,-42,200,275}
};
int areaY[7][14]={
{389,199,356,229,446,93,426,293,454,163,339,465,453,464},
{373,37,110,252,347,164,250,390,410,224,314,100,288,174},
{139,216,347,251,233,181,355,302,288,198,421,242,398,321},
{181,323,127,374,269,444,319,28,51,433,195,256,259,326},
{449,15,183,248,252,374,139,283,410,-11,174,430,221,247},
{85,420,122,165,-8,232,-20,480,325,263,36,400,194,203},
{137,359,315,150,250,247,281,449,403,211,132,364,405,154}
};
int areaW[7][14]={
{1,1,1,1,1,1,1,2,2,2,2,2,2,2},
{1,1,1,1,1,1,1,2,2,2,2,2,2,2},
{1,1,1,1,1,1,1,2,2,2,2,2,2,2},
{1,1,1,1,1,1,1,2,2,2,2,2,2,2},
{1,1,1,1,1,1,1,2,2,2,2,2,2,2},
{1,1,1,1,1,1,1,2,2,2,2,2,2,2},
{1,1,1,1,1,1,1,2,2,2,2,2,2,2}
};
int stationX[7]={199,180,50,110,-16,208,174};
int stationY[7]={348,398,398,398,57,87,281};
int shipX[7]={100,50,50,50,264,40,190};
int shipY[7]={50,50,50,50,376,60,45};
@implementation leveldesign
@end