-
Notifications
You must be signed in to change notification settings - Fork 0
/
main.mjs
244 lines (240 loc) · 7.05 KB
/
main.mjs
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
import { Map } from "./map.mjs";
import { Components } from "./ecs/components.mjs";
import { Systems } from "./ecs/systems.mjs";
import { Joystick } from "./controllers/joystick.mjs";
import { Font } from "./assets/fonts/font.mjs";
import { Audio } from "./controllers/audio.mjs";
let Fes = {
definitions:{},
data:{
systems:[],
renderSystems:[],
},
engine : {
frameCount:0,
inputBuffer : [],
controls : {
Up:false,
Down:false,
Left:false,
Right:false,
Mouse_Left:false,
Mouse_Right:false,
Mouse_Left_Pressed:false,
Mouse_Right_Pressed:false,
Mouse_Left_Released:false,
Mouse_Right_Released:false,
Mouse_X:-1,
Mouse_Y:-1,
Mouse_Screen_X:-1,
Mouse_Screen_Y:-1,
},
INPUT_BUFFER_SIZE:6,
FRAME_DURATION:32,
renderTimer:null,
renderLastTick:null,
lastTick:Date.now(),
timer:null,
globId:0,
instanceName:""//for multiplayer: each player needs a unique ID
},
R: {
varCtx:null,
screenX:0,
screenY:0,
TILE_SIZE:32,
SCREEN_WIDTH:768,//NOTE: if changing, also update the HTML canvas size, and scle below
SCREEN_HEIGHT:432,
SCALE:0.6
}
};
Fes.engine.getControls = function (entityId){
//this can be overwritten to implemented control abstractions
if(entityId == Fes.data.player){
return Fes.engine.controls;
}
return Fes.engine.blankControls;
}
Fes.start = function (){
Components.init();
Systems.initUpdate(Fes.data.ecs,Fes.data.systems);
Systems.initRender(Fes.data.ecs,Fes.data.renderSystems);
Fes.engine.blankControls = JSON.parse(JSON.stringify(Fes.engine.controls));
Map.init(function(){
clearTimeout(Fes.engine.timer);//if there was a previous timer running, stop it
Fes.engine.lastTick = Date.now();
Fes.engine.renderLastTick = Date.now();
Fes.update();
cancelAnimationFrame(Fes.R.render);
Fes.engine.renderTimer = requestAnimationFrame(Fes.R.render);
});
Audio.playBGM(Audio.BGM_KINDS.TITLE);
Joystick.init();
};
Fes.update =function (){
//keep track of time delta
let delta = Date.now()-Fes.engine.lastTick;
var frames = Math.floor(delta/Fes.engine.FRAME_DURATION)+1;
var remainder = delta%Fes.engine.FRAME_DURATION;
Audio.enableSound();
for(let f=0;f<frames;f+=1){
Systems.update(Fes.data.systems);
Fes.engine.frameCount+=1;
}
Audio.disableSound();
if(Fes.data.networking){
Fes.data.networking.update();
}
Audio.enableSound();
if(Fes.data.mainMenu){
Fes.data.mainMenu.update();
}
Audio.disableSound();
Fes.engine.lastTick = Date.now();
Fes.engine.timer=setTimeout(Fes.update,Fes.engine.FRAME_DURATION - remainder);
//clear press/release triggers
for(const key of Object.keys(Fes.engine.controls)){
if(key.indexOf("_")>-1&&key.indexOf("Mouse")==-1){//pressed or released have a suffix
Fes.engine.controls[key]=false;
}
}
Fes.engine.controls.Mouse_Left_Pressed = false;
Fes.engine.controls.Mouse_Right_Pressed = false;
Fes.engine.controls.Mouse_Left_Released = false;
Fes.engine.controls.Mouse_Right_Released = false;
//keep the mouse x/y in sync with screen updates
Fes.engine.controls.Mouse_X = Fes.R.screenX+Fes.engine.controls.Mouse_Screen_X;
Fes.engine.controls.Mouse_Y = Fes.R.screenY+Fes.engine.controls.Mouse_Screen_Y;
Joystick.update();
};
Fes.stop = function (){
cancelAnimationFrame(Fes.engine.renderTimer);
clearTimeout(Fes.engine.timer);
};
Fes.init = function (){
let getRandomId = function() {
let str = "";
//stripped down to remove characters that look similar
var characters = "A245679YJLPSWMFC";
for(let i = 0; i < 5; i+=1) {
str += characters.charAt(Math.floor(Math.random() * characters.length));
}
return str;
};
Fes.engine.instanceName = getRandomId();
Fes.engine.globId = 0;
Fes.R.CreateCanvas();
document.onkeydown = function checkKeyDown(e) {
e = e || window.event;
let handleKey = function(key){
if(!Fes.engine.controls[key]){
Fes.engine.controls[key+"_Pressed"] = true;
}
Fes.engine.controls[key]=true;
}
if (e.code == 'ArrowUp'||e.code=="KeyW") {
handleKey("Up");
}
if (e.code == 'ArrowDown'||e.code=="KeyS") {
handleKey("Down");
}
if (e.code == 'ArrowLeft'||e.code=="KeyA") {
handleKey("Left");
}
if (e.code == 'ArrowRight'||e.code=="KeyD") {
handleKey("Right");
}
};
document.onkeyup = function checkKeyUp(e) {
e = e || window.event;
let handleKey = function(key){
if(Fes.engine.controls[key]){
Fes.engine.controls[key+"_Released"] = true;
}
Fes.engine.controls[key]=false;
}
if (e.code == 'ArrowUp'||e.code=="KeyW") {
handleKey("Up");
}
if (e.code == 'ArrowDown'||e.code=="KeyS") {
handleKey("Down");
}
if (e.code == 'ArrowLeft'||e.code=="KeyA") {
handleKey("Left");
}
if (e.code == 'ArrowRight'||e.code=="KeyD") {
handleKey("Right");
}
};
Fes.R.varCanvas.addEventListener("mousedown", function(e){
Fes.engine.controls.Mouse_X = Fes.R.screenX+e.offsetX*Fes.R.SCALE;
Fes.engine.controls.Mouse_Y = Fes.R.screenY+e.offsetY*Fes.R.SCALE;
Fes.engine.controls.Mouse_Screen_X = e.offsetX*Fes.R.SCALE;
Fes.engine.controls.Mouse_Screen_Y = e.offsetY*Fes.R.SCALE;
if(e.button == 0){
Fes.engine.controls.Mouse_Left = true;
Fes.engine.controls.Mouse_Left_Pressed = true;
}
if(e.button == 2){
Fes.engine.controls.Mouse_Right = true;
Fes.engine.controls.Mouse_Right_Pressed = true;
}
});
Fes.R.varCanvas.addEventListener("mouseup", function(e){
Fes.engine.controls.Mouse_X = Fes.R.screenX+e.offsetX*Fes.R.SCALE;
Fes.engine.controls.Mouse_Y = Fes.R.screenY+e.offsetY*Fes.R.SCALE;
Fes.engine.controls.Mouse_Screen_X = e.offsetX*Fes.R.SCALE;
Fes.engine.controls.Mouse_Screen_Y = e.offsetY*Fes.R.SCALE;
if(e.button == 0){
Fes.engine.controls.Mouse_Left = false;
Fes.engine.controls.Mouse_Left_Released = true;
}
if(e.button == 2){
Fes.engine.controls.Mouse_Right = false;
Fes.engine.controls.Mouse_Right_Released = true;
}
});
Fes.R.varCanvas.addEventListener("mousemove", function(e){
Fes.engine.controls.Mouse_Screen_X = e.offsetX*Fes.R.SCALE;
Fes.engine.controls.Mouse_Screen_Y = e.offsetY*Fes.R.SCALE;
Fes.engine.controls.Mouse_X = Fes.R.screenX+Fes.engine.controls.Mouse_Screen_X;
Fes.engine.controls.Mouse_Y = Fes.R.screenY+Fes.engine.controls.Mouse_Screen_Y;
});
Fes.R.varCanvas.addEventListener('contextmenu', function(e){
e.preventDefault();
});
Fes.start();
};
Fes.R.drawText = function(text,x,y){
for(let i=0;i<text.length;i+=1){
let ch = text.charAt(i);
Font.drawCharacter(ch,x+Font.kerning(i),y);
}
}
Fes.R.render = function (){
Fes.R.clear();
Fes.R.varCtx.imageSmoothingEnabled = false;
//TODO: sort by depth
Systems.render();
if(Fes.data.mainMenu){
Fes.data.mainMenu.render();
}
if(Fes.data.networking){
Fes.data.networking.render();
}
Fes.engine.renderTimer = requestAnimationFrame(Fes.R.render);
};
Fes.R.CreateCanvas = function () {
if(!Fes.R.varCtx){
let canvas = document.getElementById('cnv');
Fes.R.varCanvas = canvas;
Fes.R.varCtx = canvas.getContext('2d');
}
};
Fes.R.clear = function () {
if(Fes.R.varCtx){
Fes.R.varCtx.clearRect(0, 0,Fes.R.SCREEN_WIDTH,Fes.R.SCREEN_HEIGHT);
}
};
window.Fes = Fes;
window.onload=Fes.init;