var gamedata = {
// associative array for gamedata files
- load: def => this[def] ? this[def] : this[def] = new Textfile(def)
+ load: function(def) { return this[def] ? this[def] : this[def] = new Textfile(def); }
}
var gfx = {
// associative array for game graphics
return this[def];
}
};
+var map;
function Textfile(txtfile) {
// fetch and parse gamedata file into structured object
case /^duration=[0-9]+s$/.test(line):
ref["duration"] = line.split(/=|s$/)[1] * 1000;
break;
+ // numeric array types
+ case /^(location|hero_pos|render_size|render_offset)=[0-9,-]+$/.test(line):
+ key = line.split(/[=]/)[0]; value = line.split(/[=]/)[1].split(/,/);
+ ref[key] = value.map(m => m * 1);
+ break;
// general numeric value (key=#)
case /^[^#].*=[0-9]+$/.test(line):
key = line.split(/[=]/)[0]; value = line.split(/=/).slice(1) * 1;
dy[y * w + x] = (x + y) * th / 2;
}
+ const npcs = [];
+ if (this.info.npc) for (let def of this.info.npc) {
+ let loc = def.location[1] * w + def.location[0];
+ npcs[loc] = new Npc(def.filename)
+ npcs[loc].place(dx[loc], dy[loc]);
+ this.info.layer.find(l => l.type == "collision").data[loc] = 1;
+ }
+
+ this.events = [];
+ for (let ev of this.info.event) {
+ for (let x = ev.location[0]; x < ev.location[0] + ev.location[2]; x++)
+ for (let y = ev.location[1]; y < ev.location[1] + ev.location[3]; y++) {
+ let loc = y * w + x;
+ if (!this.events[loc]) this.events[loc] = [];
+ this.events[loc].push(ev);
+ }
+ }
+
// tile index for pixel position on map
this.tileAt = function(x, y) {
var r = (y + th / 2) / th; var c = (x - w * tw /2) / tw;
return ny * w + nx;
}
+ // vice versa the pixel coordinates of a given map tile
+ this.positionOf = (tl, ty = -1) => (~ty) ? [dx[ty * w + tl], dy[ty * w + tl]] : [ dx[tl], dy[tl] ];
+ this.xOf = (tl, ty = -1) => (~ty) ? dx[ty * w + tl] : dx[tl];
+ this.yOf = (tl, ty = -1) => (~ty) ? dy[ty * w + tl] : dy[tl];
+
// center map to pixel position (by setting drawing offsets)
this.center = function(x, y) {
posx = canvas.canvas.width / 2 - x;
for ( i = 0; i < h * w; i++ ) {
draw_tile(ob[i], posx + dx[i], posy + dy[i]);
if (mm[i]) mm[i].forEach(m => m.draw(posx + m.position[0], posy + m.position[1]));
+ if (npcs[i]) npcs[i].draw(posx + dx[i], posy + dy[i]);
}
}
var frametime = performance.now();
gfx.load(info.image)
+ // some simplified npc files do not define animation frames
+ // render size and offset are given instead, and we
+ // assume, that we can just loop horizontally over the image
+ if (!info[animation].frame){
+ info[animation].frame = [];
+ let rs = info.render_size, ro = info.render_offset;
+
+ for (let i = 0; i < info[animation].frames; i++ )
+ info[animation].frame[i] = [[ i * rs[0], 0, rs[0], rs[1], ro[0], ro[1]]];
+ }
+
// place mob on x/y pixel coordinates
// e.g. when spawning, walking, etc.
this.place = function(x, y) {
this.swing = () => this.animate("swing" );
}
+function Npc(textdef){
+ this.info = gamedata.load(textdef);
+ const avatar = new Mob(this.info.gfx);
+
+ this.place = function(x, y) {
+ avatar.place(x,y);
+ return this;
+ }
+
+ this.draw = function(x, y) {
+ avatar.draw(x, y);
+ return this;
+ }
+}
+
function Hero(gender = "female", hair = "short"){
// Object for player character
// unique in single player
this.swing = () => this.animate("swing" );
}
-function Controls(hero, map){
+function Controls(hero){
// processes keyboard / touch / mouse
// causes according player actions
// single player only, conrol will be assigned to server in multi player
right: 68, altright: 39,
}
var keys = [];
- var col = map.info.layer.find(l => l.type == "collision").data;
window.addEventListener("keydown", e => keys[e.keyCode] = true );
window.addEventListener("keyup" , e => keys[e.keyCode] = false);
var dx = x * sx, hx = hero.position[0];
var dy = y * sy, hy = hero.position[1];
var f = 2.1;
+ const col = map.info.layer.find(l => l.type == "collision").data;
if (col[map.tileAt(hx + dx, hy + dy)] == 0 )
hero.place(hx + dx, hy + dy);
else player.stance();
map.center(hero.position[0], hero.position[1]);
+ events(hero.position[0], hero.position[1]);
+ }
+
+ function events(x, y) {
+ const i = map.tileAt(x,y); var ev;
+ if (map.events[i]) {
+ // intermap
+ if ( ev = map.events[i].find(e => (e.activate == "on_trigger" && e.intermap)) ){
+ ev = ev.intermap.split(/[,]/);
+ map = new Map(ev[0]);
+ hero.place( map.xOf(ev[1] * 1, ev[2] * 1), map.yOf(ev[1] * 1, ev[2] * 1) );
+ map.center( map.xOf(ev[1] * 1, ev[2] * 1), map.yOf(ev[1] * 1, ev[2] * 1) );
+ }
+ }
}
// process input and decide on according action
// player = new Mob("animations/enemies/zombie.txt"); player.stats = { speed: 3 };
player = new Hero();
map = new Map("/maps/arrival.txt");
-player.place(map.info.header.hero_pos.split(/,/)[0] * map.info.header.tilewidth,
- map.info.header.hero_pos.split(/,/)[1] * map.info.header.tileheight);
-player.direct(5).stance();
+player.place(map.xOf(map.info.header.hero_pos[0], map.info.header.hero_pos[1]),
+ map.yOf(map.info.header.hero_pos[0], map.info.header.hero_pos[1]));
+player.direct(6).stance();
map.center(player.position[0], player.position[1]);
-c = new Controls(player, map);
+c = new Controls(player);
setInterval (() => map.draw([player]), 33.33 );
projects / flarejs / blobdiff