misc/tower
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Plausible parabolas

Browse Source
This commit is contained in:
Ian Gulliver
2021-05-12 03:54:32 +00:00
parent 00f0456fb8
commit a1fea04b14
6 changed files with 46 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
js/projectile_tile_factory.js
View File

@@ -1,5 +1,8 @@
import { LayeredTileFactory } from './layered_tile_factory.js';
import { TileFactory } from './tile_factory.js';
function get_distance(x, y) {
return Math.sqrt(x ** 2 + y ** 2);
}
export class ProjectileTileFactory extends TileFactory {
constructor(tile_factory, target_relative_x, target_relative_y, spin, speed, loft) {
super(tile_factory.layer_name, tile_factory.width, tile_factory.height);
@@ -10,8 +13,17 @@ export class ProjectileTileFactory extends TileFactory {
this.speed = speed;
this.loft = loft;
const copy = tile_factory.copy();
const distance = Math.sqrt(target_relative_x ** 2 + target_relative_y ** 2);
console.log(distance);
const top = Math.min(0, target_relative_y) - loft;
let h1_distance = get_distance(target_relative_x / 2, top);
let h2_distance = get_distance(target_relative_x / 2, target_relative_y - top);
let total_distance = h1_distance + h2_distance;
let vertex_offset = h1_distance / total_distance;
for (let i = 0; i < 5; i++) {
h1_distance = get_distance(target_relative_x * vertex_offset, top);
h2_distance = get_distance(target_relative_x * (1 - vertex_offset), target_relative_y - top);
total_distance = h1_distance + h2_distance;
vertex_offset = h1_distance / total_distance;
}
copy.add_animation('launch-x', [
{
'offset': 0.0,
@@ -22,10 +34,10 @@ export class ProjectileTileFactory extends TileFactory {
{
'offset': 1.0,
'left': `${target_relative_x / tile_factory.width * 100}%`,
'transform': `rotate(${Math.sign(target_relative_x) * distance * spin * 10}deg)`,
'transform': `rotate(${Math.sign(target_relative_x) * total_distance * spin * 10}deg)`,
},
], {
'duration': distance / speed * 100,
'duration': total_distance / speed * 100,
'iterations': 1,
});
copy.add_animation('launch-y', [
@@ -35,16 +47,16 @@ export class ProjectileTileFactory extends TileFactory {
'top': '0',
},
{
'offset': 0.50 - Math.abs(target_relative_y / distance * 0.50),
'offset': vertex_offset,
'easing': 'cubic-bezier(0.33, 0.00, 0.66, 0.33)',
'top': `${((-1 * loft / tile_factory.height) + ((target_relative_y / distance) * (loft / tile_factory.height))) * 100}%`,
'top': `${top / tile_factory.height * 100}%`,
},
{
'offset': 1.0,
'top': `${target_relative_y / tile_factory.height * 100}%`,
},
], {
'duration': distance / speed * 100,
'duration': total_distance / speed * 100,
'iterations': 1,
});
this.tile_factory = new LayeredTileFactory([copy]);