-
Notifications
You must be signed in to change notification settings - Fork 2
/
swift.js
427 lines (387 loc) · 17.5 KB
/
swift.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
// requestAnimationFrame polyfill by Erik Möller
// fixes from Paul Irish and Tino Zijdel
(function() {
var lastTime = 0;
var vendors = ['ms', 'moz', 'webkit', 'o'];
for(var x = 0; x < vendors.length && !window.requestAnimationFrame; ++x) {
window.requestAnimationFrame = window[vendors[x]+'RequestAnimationFrame'];
window.cancelAnimationFrame = window[vendors[x]+'CancelAnimationFrame']
|| window[vendors[x]+'CancelRequestAnimationFrame'];
}
if (!window.requestAnimationFrame)
window.requestAnimationFrame = function(callback, element) {
var currTime = new Date().getTime();
var timeToCall = Math.max(0, 16 - (currTime - lastTime));
var id = window.setTimeout(function() { callback(currTime + timeToCall); },
timeToCall);
lastTime = currTime + timeToCall;
return id;
};
if (!window.cancelAnimationFrame)
window.cancelAnimationFrame = function(id) {
clearTimeout(id);
};
}());
var Swift = (function(){
//PRIVATE
var _body,
_info,
_canvas,
_context,
_posX = 400, //position x of ship
_posY = 190, //position y of ship
_position = false, //false position means horizontal, true is vertical
_up = false, //false - on click ship goes down, true - ship goes up
_right = true, //false - ship goes left, true - ship goes right
_shiftX = 0, //shift of level x position
_shiftY = 0, //shift of level y position
_shipDim = 12, //width and height of ship is ~12px
_stroke = '#FFF', //color of level borders
_animationId = 0,
_v = [2,2,3,3,4,4,5,5,4,5], //velocity of each level
_lives = 5, //start game with 5 lives,
_lvl = 0,
_lines = [ //lines after which we change mode, vert: true means that line is vertical, mode: true means that vertical mode will be changed, last line is end of level
[{x1:1780,y1:1200,x2:1780,y2:1400,vert:true,mode:true}],
[{x1:900,y1:300,x2:900,y2:500,vert:true,mode:true},{x1:1200,y1:100,x2:1200,y2:300,vert:true,mode:true},{x1:1580,y1:300,x2:1580,y2:500,vert:true,mode:true}],
[{x1:800,y1:400,x2:1000,y2:400,vert:false,mode:false},{x1:0,y1:802,x2:200,y2:802,vert:false,mode:false},{x1:979,y1:900,x2:979,y2:1100,vert:true,mode:true}],
[{x1:400,y1:559,x2:600,y2:559,vert:false,mode:true},{x1:400,y1:-461,x2:600,y2:-461,vert:false,mode:true},{x1:1200,y1:559,x2:1400,y2:559,vert:false,mode:true},{x1:1200,y1:-479,x2:1400,y2:-479,vert:false,mode:true}],
[{x1:500,y1:100,x2:500,y2:300,vert:true,mode:true},{x1:1080,y1:-400,x2:1080,y2:-300,vert:true,mode:false},{x1:500,y1:-500,x2:500,y2:-400,vert:true,mode:true},{x1:300,y1:-302,x2:400,y2:-302,vert:false,mode:false},{x1:428,y1:-200,x2:428,y2:-100,vert:true,mode:true}],
[{x1:680,y1:260,x2:680,y2:300,vert:true,mode:true},{x1:700,y1:240,x2:700,y2:300,vert:true,mode:true},{x1:720,y1:220,x2:720,y2:300,vert:true,mode:true},{x1:740,y1:240,x2:740,y2:300,vert:true,mode:true},{x1:760,y1:260,x2:760,y2:300,vert:true,mode:true},{x1:680,y1:100,x2:680,y2:120,vert:true,mode:true},{x1:700,y1:100,x2:700,y2:140,vert:true,mode:true},{x1:720,y1:100,x2:720,y2:160,vert:true,mode:true},{x1:740,y1:100,x2:740,y2:180,vert:true,mode:true},{x1:760,y1:100,x2:760,y2:200,vert:true,mode:true},{x1:780,y1:100,x2:780,y2:220,vert:true,mode:true},{x1:800,y1:100,x2:800,y2:240,vert:true,mode:true},{x1:1100,y1:100,x2:1100,y2:130,vert:true,mode:true},{x1:1680,y1:580,x2:1680,y2:780,vert:true,mode:true}],
[{x1:750,y1:500,x2:750,y2:550,vert:true,mode:true},{x1:800,y1:20,x2:900,y2:20,vert:false,mode:true},{x1:980,y1:100,x2:980,y2:200,vert:true,mode:false},{x1:20,y1:-100,x2:20,y2:0,vert:true,mode:true}],
[{x1:1120,y1:900,x2:1120,y2:1000,vert:true,mode:true},{x1:1260,y1:500,x2:1260,y2:600,vert:true,mode:true},{x1:1400,y1:800,x2:1400,y2:900,vert:true,mode:true},{x1:1450,y1:500,x2:1520,y2:500,vert:false,mode:false},{x1:1100,y1:260,x2:1180,y2:260,vert:false,mode:false},{x1:1300,y1:160,x2:1300,y2:200,vert:true,mode:true},{x1:1480,y1:140,x2:1520,y2:140,vert:false,mode:false},{x1:1120,y1:20,x2:1120,y2:60,vert:true,mode:true},{x1:740,y1:240,x2:940,y2:240,vert:false,mode:true}],
[{x1:600,y1:450,x2:600,y2:500,vert:true,mode:true},{x1:752,y1:0,x2:752,y2:50,vert:true,mode:true},{x1:900,y1:450,x2:900,y2:500,vert:true,mode:true},{x1:1052,y1:0,x2:1052,y2:50,vert:true,mode:true},{x1:1500,y1:220,x2:1500,y2:350,vert:true,mode:true},{x1:1600,y1:300,x2:1600,y2:350,vert:true,mode:false},{x1:1600,y1:202,x2:1700,y2:202,vert:false,mode:false},{x1:1552,y1:50,x2:1552,y2:100,vert:true,mode:true},{x1:20,y1:140,x2:20,y2:240,vert:true,mode:true}],
[{x1:600,y1:100,x2:600,y2:300,vert:true,mode:true},{x1:600,y1:-600,x2:600,y2:-100,vert:true,mode:false},{x1:920,y1:-450,x2:920,y2:-100,vert:true,mode:false},{x1:920,y1:-600,x2:920,y2:-500,vert:true,mode:true},{x1:1100,y1:-600,x2:1100,y2:-250,vert:true,mode:false},{x1:1100,y1:-200,x2:1100,y2:-100,vert:true,mode:true},{x1:1300,y1:-450,x2:1300,y2:-100,vert:true,mode:false},{x1:1300,y1:-600,x2:1300,y2:-500,vert:true,mode:true},{x1:1370,y1:-600,x2:1370,y2:-550,vert:true,mode:false},{x1:1500,y1:-520,x2:1500,y2:-100,vert:true,mode:false},{x1:1680,y1:-580,x2:1680,y2:-480,vert:true,mode:false},{x1:1580,y1:-580,x2:1680,y2:-580,vert:false,mode:true},{x1:1800,y1:-120,x2:1800,y2:-52,vert:true,mode:false},{x1:2000,y1:-150,x2:2000,y2:-30,vert:true,mode:true},{x1:2280,y1:-400,x2:2280,y2:-300,vert:true,mode:true}]
],
_level = [ //each level has separate coordinates
[{x:0,y:100},{x:1000,y:100},{x:1000,y:600},{x:1400,y:600},{x:1400,y:1200},{x:1800,y:1200},{x:1800,y:1400},{x:1200,y:1400},{x:1200,y:800},{x:800,y:800},{x:800,y:300},{x:0,y:300},{x:0,y:100}],
[{x:0,y:100},{x:800,y:100},{x:800,y:300},{x:1000,y:300},{x:1000,y:100},{x:1400,y:100},{x:1400,y:300},{x:1600,y:300},{x:1600,y:500},{x:1300,y:500},{x:1300,y:300},{x:1100,y:300},{x:1100,y:500},{x:700,y:500},{x:700,y:300},{x:0,y:300},{x:0,y:100}],
[{x:0,y:100},{x:1000,y:100},{x:1000,y:700},{x:200,y:700},{x:200,y:900},{x:1000,y:900},{x:1000,y:1100},{x:0,y:1100},{x:0,y:500},{x:800,y:500},{x:800,y:300},{x:0,y:300},{x:0,y:100}],
[{x:0,y:100},{x:400,y:100},{x:400,y:-500},{x:600,y:-500},{x:600,y:-440},{x:1000,y:-440},{x:1000,y:100},{x:1200,y:100},{x:1200,y:-500},{x:1400,y:-500},{x:1400,y:600},{x:1200,y:600},{x:1200,y:300},{x:800,y:300},{x:800,y:-240},{x:600,y:-240},{x:600,y:600},{x:400,y:600},{x:400,y:300},{x:0,y:300},{x:0,y:100}],
[{x:0,y:100},{x:600,y:100},{x:600,y:-200},{x:900,y:-200},{x:900,y:-300},{x:600,y:-300},{x:600,y:-400},{x:400,y:-400},{x:400,y:-200},{x:450,y:-200},{x:450,y:-100},{x:300,y:-100},{x:300,y:-500},{x:700,y:-500},{x:700,y:-400},{x:1100,y:-400},{x:1100,y:-300},{x:1000,y:-300},{x:1000,y:-100},{x:700,y:-100},{x:700,y:300},{x:0,y:300},{x:0,y:100}],
[{x:0,y:100},{x:1200,y:100},{x:1700,y:600},{x:1700,y:800},{x:1200,y:300},{x:0,y:300},{x:0,y:100}],
[{x:0,y:140},{x:600,y:140},{x:600,y:0},{x:0,y:0},{x:0,y:-100},{x:700,y:-100},{x:700,y:500},{x:800,y:500},{x:800,y:0},{x:900,y:0},{x:900,y:100},{x:1000,y:100},{x:1000,y:200},{x:900,y:200},{x:900,y:600},{x:600,y:600},{x:600,y:240},{x:0,y:240},{x:0,y:140}],
[{x:0,y:100},{x:700,y:100},{x:700,y:500},{x:1100,y:500},{x:1100,y:800},{x:1140,y:800},{x:1140,y:500},{x:1380,y:500},{x:1380,y:800},{x:1420,y:800},{x:1420,y:400},{x:1060,y:400},{x:1060,y:160},{x:1420,y:160},{x:1420,y:120},{x:940,y:120},{x:940,y:260},{x:740,y:260},{x:740,y:20},{x:1520,y:20},{x:1520,y:260},{x:1260,y:260},{x:1260,y:300},{x:1520,y:300},{x:1520,y:1000},{x:1280,y:1000},{x:1280,y:700},{x:1240,y:700},{x:1240,y:1000},{x:1000,y:1000},{x:1000,y:600},{x:600,y:600},{x:600,y:300},{x:0,y:300},{x:0,y:100}],
[{x:0,y:140},{x:550,y:140},{x:550,y:450},{x:650,y:450},{x:650,y:0},{x:850,y:0},{x:850,y:450},{x:950,y:450},{x:950,y:0},{x:1150,y:0},{x:1150,y:150},{x:1400,y:150},{x:1400,y:50},{x:1700,y:50},{x:1700,y:350},{x:1400,y:350},{x:1400,y:200},{x:1100,y:200},{x:1100,y:50},{x:1000,y:50},{x:1000,y:500},{x:800,y:500},{x:800,y:50},{x:700,y:50},{x:700,y:500},{x:500,y:500},{x:500,y:240},{x:0,y:240},{x:0,y:140}],
[{x:0,y:100},{x:700,y:100},{x:700,y:-100},{x:500,y:-100},{x:500,y:-600},{x:1700,y:-600},{x:1700,y:-300},{x:2100,y:-100},{x:2100,y:-400},{x:2300,y:-400},{x:2300,y:-300},{x:2200,y:-300},{x:2200,y:100},{x:2100,y:100},{x:1700,y:-100},{x:900,y:-100},{x:900,y:300},{x:0,y:300},{x:0,y:100}]
],
Ship = (function(){
var len = 10,
fraction = 2/3,
lineWidth = 2.5, //need to add 0.5px because of http://stackoverflow.com/questions/8696631/canvas-drawings-are-blurry
strokeActive = '#FF4040', //red
strokeInactive = '#8a8a8a', //grey
firstGrey = '#797979',
secGrey = '#4d4c4c',
thirdGrey = '#302f2f',
fourthGrey = '#111111';
function right(x,y){
_context.lineTo(x+len,y);
_context.lineTo(x-len,y-len*fraction);
_context.lineTo(x-len,y+len*fraction);
_context.lineTo(x+len,y);
_context.fillStyle = firstGrey;
_context.fillRect(x+12,y,4,1);
_context.fillStyle = secGrey;
_context.fillRect(x+20,y,4,1);
_context.fillStyle = thirdGrey;
_context.fillRect(x+28,y,4,1);
_context.fillStyle = fourthGrey;
_context.fillRect(x+36,y,4,1);
}
function left(x,y){
_context.lineTo(x-len,y);
_context.lineTo(x+len,y-len*fraction);
_context.lineTo(x+len,y+len*fraction);
_context.lineTo(x-len,y);
_context.fillStyle = firstGrey;
_context.fillRect(x-16,y,4,1);
_context.fillStyle = secGrey;
_context.fillRect(x-24,y,4,1);
_context.fillStyle = thirdGrey;
_context.fillRect(x-32,y,4,1);
_context.fillStyle = fourthGrey;
_context.fillRect(x-40,y,4,1);
}
function up(x,y,s){
_context.lineTo(x,y-len);
_context.lineTo(x+len*fraction,y+len);
_context.lineTo(x-len*fraction,y+len);
_context.lineTo(x,y-len);
if(!s){
_context.fillStyle = firstGrey;
_context.fillRect(x,y-16,1,4);
_context.fillStyle = secGrey;
_context.fillRect(x,y-24,1,4);
_context.fillStyle = thirdGrey;
_context.fillRect(x,y-32,1,4);
_context.fillStyle = fourthGrey;
_context.fillRect(x,y-40,1,4);
}
}
function down(x,y){
_context.lineTo(x,y+len);
_context.lineTo(x+len*fraction,y-len);
_context.lineTo(x-len*fraction,y-len);
_context.lineTo(x,y+len);
_context.fillStyle = firstGrey;
_context.fillRect(x,y+12,1,4);
_context.fillStyle = secGrey;
_context.fillRect(x,y+20,1,4);
_context.fillStyle = thirdGrey;
_context.fillRect(x,y+28,1,4);
_context.fillStyle = fourthGrey;
_context.fillRect(x,y+36,1,4);
}
return {
draw : function(x,y,single){
if(!single){
_context.beginPath();
_context.lineWidth = 1.5;
_context.strokeStyle = strokeInactive; //first draw grey ship
if(!_position){
if(_up){
up(x,y,0);
}
else{
down(x,y);
}
}
else{
if(_right){
right(x,y);
}
else{
left(x,y);
}
}
_context.stroke();
_context.closePath();
}
_context.beginPath();
_context.lineWidth = lineWidth;
_context.strokeStyle = strokeActive; //now draw red ship
if(!single){
if(!_position){
if(_right){
right(x,y);
}
else{
left(x,y);
}
}
else{
if(_up){
up(x,y,0);
}
else{
down(x,y);
}
}
}
else{
up(x,y,1);
}
_context.stroke();
_context.closePath();
}
}
})();
function moveVertical(e){
_position = true;
}
function moveHorizontal(e){
_position = false;
}
function drawChangeModeLines(){
var i;
_context.lineWidth = 4;
for(i = 0; i<_lines[_lvl].length; i++){
_context.beginPath();
if(i===_lines[_lvl].length-1){//last one is end of level, so red color
_context.strokeStyle = '#FF4040';
}
else if(_lines[_lvl][i].mode){ //blue
_context.strokeStyle = '#37B6CE';
}
else{ //green
_context.strokeStyle = '#00BD39';
}
_context.lineTo(_lines[_lvl][i].x1-_shiftX,_lines[_lvl][i].y1-_shiftY);
_context.lineTo(_lines[_lvl][i].x2-_shiftX,_lines[_lvl][i].y2-_shiftY);
_context.stroke();
_context.closePath();
}
}
function drawLevelShape(){
var i;
_context.beginPath();
_context.lineWidth = 2;
_context.strokeStyle = _stroke;
for(i = 0; i<_level[_lvl].length; i++){
_context.lineTo(_level[_lvl][i].x-_shiftX,_level[_lvl][i].y-_shiftY);
}
_context.stroke();
_context.closePath();
}
function moveWholeLevel(){
if(_position){
if(_up){
_shiftY -= _v[_lvl];
}
else {
_shiftY += _v[_lvl];
}
}
else{
if(_right){
_shiftX += _v[_lvl];
}
else{
_shiftX -= _v[_lvl];
}
}
}
function drawInfo(){
var i=_lvl+1;
_context.fillStyle = "#FFFFFF";
_context.font = "bold 16px Arial";
_context.fillText("Level "+i, 10, 585);
_context.fillText("Lives", 90, 585);
for(i=1; i<=_lives; i++){
Ship.draw(125+(i*20),580,1);
}
}
function resetOptions(){
_shiftX = 0;
_shiftY = 0;
_position = false;
_up = false;
_right = true;
}
function changeModesOnSpecialLines(){
var i;
for(i = 0; i<_lines[_lvl].length; i++){
if(((_lines[_lvl][i].vert && _shiftX+_posX===_lines[_lvl][i].x1) && (_shiftY+_posY>=_lines[_lvl][i].y1 && _shiftY+_posY<=_lines[_lvl][i].y2)) //moving horizontal
|| ((!_lines[_lvl][i].vert && _shiftY+_posY===_lines[_lvl][i].y1) && (_shiftX+_posX>=_lines[_lvl][i].x1 && _shiftX+_posX<=_lines[_lvl][i].x2))){ //moving vertical
if(i==_lines[_lvl].length-1){//last line is end of level
//clearInterval(_animationId);
cancelAnimationFrame(_animationId);
if(_lvl===9){//end of game
_lvl = 0;
_lives = 5;
resetOptions();
showInfo(10);
}
else{
_lvl++;
resetOptions();
showInfo(_lvl);
}
}
else if(_lines[_lvl][i].mode){
_up = !_up;
}
else{
_right = !_right;
}
}
}
}
function detectCollision(){
if (!_context.isPointInPath(_posX-_shipDim,_posY-_shipDim) || !_context.isPointInPath(_posX+_shipDim,_posY-_shipDim) || !_context.isPointInPath(_posX-_shipDim,_posY+_shipDim) || !_context.isPointInPath(_posX+_shipDim,_posY+_shipDim)){
cancelAnimationFrame(_animationId);
//clearInterval(_animationId);
_lives--;
if(_lives){
resetOptions();
showInfo(100);
}
else{ //game over
_lvl=0;
resetOptions();
_lives = 5;
showInfo(99);
}
}
}
function animate(){
_context.clearRect(0, 0, 800, 600);
//draw information about current level and lives
drawInfo();
//draw change mode lines, last one is end of level
drawChangeModeLines();
//show ship
Ship.draw(_posX,_posY,0);
//draw level
drawLevelShape();
//set shift variables for next animation step
moveWholeLevel();
//check if ship is on change mode line
//if yes, then change _up or _right mode
changeModesOnSpecialLines();
//stop the game when ship hits the wall
detectCollision();
}
function run(){
/*_animationId = setInterval(function() {
animate();
}, (1000/60));*/
_animationId = requestAnimationFrame(run);
animate();
}
function showInfo(no){
var message='',
startButton;
if(no==99){
message = '<h2>SWIFT</h2>GAME OVER :(<div id=\'s\'>RESTART GAME</div>';
}
else if(no==100){
message = '<h2>SWIFT</h2>Oops!<div id=\'s\'>RESTART LEVEL</div>';
}
else if(no==0){
message = '<h2>SWIFT</h2>Welcome to the SWIFT game! Rules are easy. Just hold the left mouse button to move ship vertically or release it to move horizontally.<div id=\'s\'>START GAME</div>';
}
else if(no==1){
message = '<h2>SWIFT</h2>Congratulations!<br/>You finished level 1.<br/>Let\'s complicate it a bit. Fly through <span id=\'b\'>blue</span> lines to change your vertical direction.<div id=\'s\'>START NEXT LEVEL</div>';
}
else if(no==2){
message = '<h2>SWIFT</h2>Congratulations!<br/>You finished level 2.<br/>Now fly through <span id=\'g\'>green</span> lines to change your horizontal direction.<div id=\'s\'>START NEXT LEVEL</div>';
}
else if(no==3){
message = '<h2>SWIFT</h2>Congratulations!<br/>You finished level 3.<br/>Now you know all the rules. Good luck with other levels!<div id=\'s\'>START NEXT LEVEL</div>';
}
else if(no==10){
message = '<h2>SWIFT</h2>Congratulations!<br/>You finished all levels.<br/>Thanks for playing!<div id=\'s\'>RESTART GAME</div>';
}
else{
message = '<h2>SWIFT</h2>Congratulations!<br/>You finished level '+no+'<br/><div id=\'s\'>START NEXT LEVEL</div>';
}
_info.style.display="block";
_info.innerHTML = message;
startButton = document.getElementById('s');
startButton.addEventListener('click',function(){
_info.style.display="none";
run();
},true);
}
return {
init : function() {
_body = document.body;
_info = document.getElementById('info');
_canvas = document.getElementById('myCanvas');
_context = _canvas.getContext('2d');
if (_context){
showInfo(_lvl);
}
_body.addEventListener('mousedown',moveVertical,true);
_body.addEventListener('mouseup',moveHorizontal,true);
_body.addEventListener('touchstart',moveVertical,true);
_body.addEventListener('touchend',moveHorizontal,true);
//prevent bug with selecting canvas
//doesn't work on ipad ;(
_body.onselectstart = function(){return false;};
_canvas.addEventListener('selectstart', function(e){e.preventDefault();return false;},false);
}
}
})();