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WIP: some cleanup

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Catalin Constantin Mititiuc
2025-12-28 13:27:21 -08:00
parent 38c01d27bf
commit 1ab48b58c3
1 changed files with 7 additions and 117 deletions
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124
html/images/space.svg
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@@ -547,7 +547,7 @@
// https://en.wikipedia.org/wiki/Line%E2%80%93line_intersection#Given_two_points_on_each_line
const x = ((x1*y2-y1*x2)*(x3-x4)-(x1-x2)*(x3*y4-y3*x4))/((x1-x2)*(y3-y4)-(y1-y2)*(x3-x4));
const y = ((x1*y2-y1*x2)*(y3-y4)-(y1-y2)*(x3*y4-y3*x4))/((x1-x2)*(y3-y4)-(y1-y2)*(x3-x4));
// const y = (() * () - () * ()) / (() * () - () * ());
return { x: x, y: y };
}
@@ -556,26 +556,13 @@
if (rotate > 0) gun.style.transform = `rotate(${(+degrees + rotationSpeed * elapsed) % 360}deg)`;
else if (rotate < 0) gun.style.transform = `rotate(${(+degrees - rotationSpeed * elapsed) % 360}deg)`;
// let [velocityX, velocityY] = restart ? [0, 0] : velocity;
let { x: velocityX, y: velocityY } = s.velocity;
// let [accelerationX, accelerationY] = restart ? [0, 0] : acceleration;
let { x: accelerationX, y: accelerationY } = s.acceleration;
// if (velocityX > 0) accelerationX += -friction;
// else if (velocityX < 0) accelerationX += friction;
//
// if (velocityY > 0) accelerationY += -friction;
// else if (velocityY < 0) accelerationY += friction;
velocityX = velocityX > 0 && velocityX + accelerationX < 0 ? 0 : velocityX + accelerationX;
velocityY = velocityY > 0 && velocityY + accelerationY < 0 ? 0 : velocityY + accelerationY;
s.velocity = { x: velocityX, y: velocityY };
// if (velocity[0] > maxSpeed) velocity[0] = maxSpeed;
// else if (velocity[0] < -maxSpeed) velocity[0] = -maxSpeed
//
// if (velocity[1] > maxSpeed) velocity[1] = maxSpeed;
// else if (velocity[1] < -maxSpeed) velocity[1] = -maxSpeed
velIndic.setAttribute('x2', s.velocity.x);
velIndic.setAttribute('y2', s.velocity.y);
acclIndic.setAttribute('x2', s.acceleration.x);
@@ -583,82 +570,17 @@
const changeX = 0.001 * elapsed * velocityX;
const changeY = 0.001 * elapsed * velocityY;
// console.log("ship position", s.position);
let { x, y } = s.position;
console.log("current position", x, y);
let position = [positionX, positionY] = restart ? [0, 0] : wrapPos(changeX + x, changeY + y);
let [xc, yc] = position;
// const collE = getCollisionEdges(edgeszz, position);
// console.log("collision edges", collE);
s.collision = detectCollisions(position, allWallCorners, findAllEdges(allEdgePts, position), collE);
console.log("future position", xc, yc);
// if (s.collision) {
// find final position of ship
// const baseSlope = slope(s.collision.edge);
// const { xa, ya, xb, yb } = s.collision.edge;
// const baseSlope = slope(s.collision.edge);
// console.log("slope of base", baseSlope);
// if (baseSlope === -Infinity) {
// (↤) Vertical, normal left
// console.log("foot", xa + shipRadius, yc);
// } else if (baseSlope === Infinity) {
// (↦) Vertical, normal right
// console.log("foot", xa - shipRadius, yc);
// } else if (Object.is(baseSlope, 0)) {
// (↥) Horizontal, normal up
// const el = document.createElementNS(namespaceURIsvg, 'line');
// el.setAttribute('x1', xc);
// el.setAttribute('y1', ya);
// el.setAttribute('x2', xc);
// el.setAttribute('y2', yc);
// this point should be the position of the ship to make it
// adjacent to the collision edge without overlapping it
// console.log(el.getPointAtLength(5));
// const collPt = el.getPointAtLength(5);
// drawLine(xc, ya, collPt.x, collPt.y);
// console.log("foot", xc, ya - shipRadius);
// } else if (Object.is(baseSlope, -0)) {
// (↧) Horizontal, normal down
// console.log("foot", xc, ya + shipRadius);
// } else {
// const foot = perpIntxn(baseSlope, xa, ya, xc, yc);
// console.log("foot", foot);
// drawLine(foot.x, foot.y, xc, yc)
// const el = document.createElementNS(namespaceURIsvg, 'line');
// el.setAttribute('x1', foot.x);
// el.setAttribute('y1', foot.y);
// el.setAttribute('x2', xc);
// el.setAttribute('y2', yc);
// this point should be the position of the ship to make it
// adjacent to the collision edge without overlapping it
// console.log(el.getPointAtLength(5));
// const collPt = el.getPointAtLength(5);
// drawLine(foot.x, foot.y, collPt.x, collPt.y);
// }
// }
// if (s.collision && !isLandable(s.collision.edge)) {
// console.log("a", "position", position, s.position);
// s.velocity = { x: 0, y: 0 };
// } else if (s.collision) {
// console.log("b", s.position, s.collision);
//
// s.velocity = { x: 0, y: 0 };
// s.position.y = Math.trunc(s.collision.edge.ya - 5);
// s.isLanded = true;
// s.node.style.transform = `translate(${s.position.x}px, ${s.position.y}px)`;
// console.log("ship landed", s, "edge", s.collision.edge.ya);
if (s.collision) {
// console.log("a");
const baseSlope = slope(s.collision.edge);
const { xa, ya, xb, yb } = s.collision.edge;
const baseLine = { x1: xa, y1: ya, x2: xb, y2: yb };
@@ -675,50 +597,18 @@
const baseSegLength = distance(baseNrmlIntxn.x, baseNrmlIntxn.y , baseVelIntxn.x, baseVelIntxn.y);
const normalSegLength = distance(baseNrmlIntxn.x, baseNrmlIntxn.y, s.position.x, s.position.y);
const theta = Math.atan(normalSegLength / baseSegLength);
const h = 5 / Math.sin(theta);
const shipRadius = 5;
const h = shipRadius / Math.sin(theta);
const cl = document.createElementNS(namespaceURIsvg, 'line');
cl.setAttribute('x1', baseVelIntxn.x);
cl.setAttribute('y1', baseVelIntxn.y);
cl.setAttribute('x2', s.position.x);
cl.setAttribute('y2', s.position.y);
console.log("h", h);
const clPt = cl.getPointAtLength(h);
console.log("clPt", clPt);
const normalSlope = 1 / -baseSlope;
const radAngle = Math.atan(normalSlope);
const foot = perpIntxn(baseSlope, xa, ya, xc, yc);
const el = document.createElementNS(namespaceURIsvg, 'line');
el.setAttribute('x1', foot.x);
el.setAttribute('y1', foot.y);
el.setAttribute('x2', s.position.x);
el.setAttribute('y2', s.position.y);
// console.log("future position", el, el.getTotalLength());
el.setAttribute('x2', xc);
el.setAttribute('y2', yc);
// console.log("current position", el, el.getTotalLength());
// console.log("foot", foot, "line", el, "length", el.getTotalLength());
svg.appendChild(el);
// console.log(el, el.getTotalLength());
// const collPt = el.getPointAtLength(5);
// let l = drawLine(foot.x, foot.y, foot.x - posX, foot.y - posY);
// let l = drawLine(foot.x, foot.y, foot.x - posY, foot.y - posX);
// s.position = { x: foot.x - posY, y: foot.y - posX };
// s.position = { x: collPt.x, y: collPt.y };
// console.log("ship position", s.position);
// console.log("line length", l.getTotalLength(), l, foot.x - posY, foot.y - posX);
const clPos = cl.getPointAtLength(h);
s.velocity = { x: 0, y: 0 };
// s.position = { x: xc, y: yc }
s.position = { x: clPt.x, y: clPt.y }
console.log("s.position", s.position);
s.position = { x: clPos.x, y: clPos.y }
s.node.style.transform = `translate(${s.position.x}px, ${s.position.y}px)`;
} else {
// console.log("c");
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