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Add projectile damage

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This commit is contained in:
schmelczerandras 2020-10-12 21:46:23 +02:00
parent f9f6825776
commit 555be9d602
14 changed files with 111 additions and 40 deletions
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13
frontend/src/scripts/commands/generators/touch-listener.ts
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@ -33,7 +33,7 @@ export class TouchListener extends CommandGenerator {
target.addEventListener('touchmove', (event: TouchEvent) => {
event.preventDefault();
const position = this.positionFromEvent(event);
const position = this.positionFromEvent(event, true);
const movement = vec2.subtract(vec2.create(), position, this.previousPosition);
if (vec2.squaredLength(movement) > 0) {
@ -50,11 +50,18 @@ export class TouchListener extends CommandGenerator {
});
}
private positionFromEvent(event: TouchEvent): vec2 {
private positionFromEvent(event: TouchEvent, invert = false): vec2 {
const touches = Array.prototype.slice.call(event.touches);
const center = touches.reduce(
(center: vec2, touch: Touch) =>
vec2.add(center, center, vec2.fromValues(-touch.clientX, -touch.clientY)),
vec2.add(
center,
center,
vec2.fromValues(
touch.clientX * (invert ? -1 : 1),
touch.clientY * (invert ? -1 : 1),
),
),
vec2.create(),
);