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Fix flickering in direction lock

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This commit is contained in:
tobspr 2020-06-17 13:55:44 +02:00
parent 6d59847153
commit 26949d5e3d
1 changed files with 48 additions and 15 deletions
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63
src/js/game/hud/parts/building_placer_logic.js
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@ -9,6 +9,7 @@ import { Entity } from "../../entity";
import { KEYMAPPINGS } from "../../key_action_mapper";
import { defaultBuildingVariant, MetaBuilding } from "../../meta_building";
import { BaseHUDPart } from "../base_hud_part";
import { lerp } from "../../../core/utils";
/**
* Contains all logic for the building placer - this doesn't include the rendering
@ -76,6 +77,12 @@ export class HUDBuildingPlacerLogic extends BaseHUDPart {
*/
this.lastDragTile = null;
/**
* Interpolate the side for direction lock slowly so it doesn't flicker
* @type {number}
*/
this.interpolatedDirectionLockSide = 0;
this.initializeBindings();
}
@ -139,15 +146,30 @@ export class HUDBuildingPlacerLogic extends BaseHUDPart {
const worldPos = this.root.camera.screenToWorld(mousePosition);
const mouseTile = worldPos.toTileSpace();
const fractional = worldPos.sub(mouseTile.toWorldSpaceCenterOfTile());
if (fractional.x + fractional.y < 0) {
if (this.interpolatedDirectionLockSide <= 0) {
return new Vector(this.lastDragTile.x, mouseTile.y);
} else {
return new Vector(mouseTile.x, this.lastDragTile.y);
}
}
/**
* Computes on which side the direction lock should be active
* @returns {-1|0|1}
*/
get currentDirectionLockSide() {
const mousePosition = this.root.app.mousePosition;
if (!mousePosition) {
// Not on screen
return 0;
}
const worldPos = this.root.camera.screenToWorld(mousePosition);
const mouseTile = worldPos.toTileSpace();
const fractional = worldPos.sub(mouseTile.toWorldSpaceCenterOfTile());
return fractional.x + fractional.y < 0 ? -1 : 1;
}
/**
* Aborts the placement
*/
@ -177,6 +199,13 @@ export class HUDBuildingPlacerLogic extends BaseHUDPart {
if (mousePos) {
this.onMouseMove(mousePos);
}
// Prevent flickering by interpolating the side
this.interpolatedDirectionLockSide = lerp(
this.interpolatedDirectionLockSide,
this.currentDirectionLockSide,
0.06
);
}
/**
@ -362,12 +391,14 @@ export class HUDBuildingPlacerLogic extends BaseHUDPart {
let rotation = (Math.round(Math_degrees(deltaToCorner.angle()) / 90) * 90 + 360) % 360;
for (let i = 0; i < lengthToCorner; ++i) {
result.push({
tile: currentPos.copy(),
rotation,
});
currentPos.addInplace(deltaToCorner);
if (lengthToCorner > 0) {
for (let i = 0; i < lengthToCorner; ++i) {
result.push({
tile: currentPos.copy(),
rotation,
});
currentPos.addInplace(deltaToCorner);
}
}
// Place from corner to end
@ -376,12 +407,14 @@ export class HUDBuildingPlacerLogic extends BaseHUDPart {
const lengthFromCorner = Math_round(pathFromCorner.length());
rotation = (Math.round(Math_degrees(deltaFromCorner.angle()) / 90) * 90 + 360) % 360;
for (let i = 0; i < lengthFromCorner + 1; ++i) {
result.push({
tile: currentPos.copy(),
rotation,
});
currentPos.addInplace(deltaFromCorner);
if (lengthFromCorner > 0) {
for (let i = 0; i < lengthFromCorner + 1; ++i) {
result.push({
tile: currentPos.copy(),
rotation,
});
currentPos.addInplace(deltaFromCorner);
}
}
return result;
}