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Catalin Mititiuc

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authorCatalin Mititiuc <webdevcat@proton.me>2024-04-25 17:21:46 -0700
committerCatalin Mititiuc <webdevcat@proton.me>2024-04-25 17:21:46 -0700
commit1833dfebf19cf4478a74d907b52c9e569879646f (patch)
tree0b65d1a9019b3bd9ba3b2ffc34898a1dce77f857 /src/modules/game
parent7f0c19becd5979a16d9298cae9f6ff8a6f96d9c2 (diff)
WIP: firing arcs algo
Diffstat (limited to 'src/modules/game')
-rw-r--r--src/modules/game/firingArc.js187
1 files changed, 180 insertions, 7 deletions
diff --git a/src/modules/game/firingArc.js b/src/modules/game/firingArc.js
index d2f18a5..adfb580 100644
--- a/src/modules/game/firingArc.js
+++ b/src/modules/game/firingArc.js
@@ -36,7 +36,7 @@ function calculateAngle(xDiff, yDiff) {
return angle;
}
-function edgePoint(x1, y1, x2, y2, maxX, maxY) {
+function edgePoint(x1, y1, x2, y2, maxX, maxY, minX = 0, minY = 0) {
let pointCoords,
xDiff = x2 - x1,
yDiff = y2 - y1,
@@ -50,25 +50,167 @@ function edgePoint(x1, y1, x2, y2, maxX, maxY) {
} else if (xDiff > 0 && yDiff < 0) {
let y = yIntercept(maxX);
- pointCoords = y >= 0 ? [maxX, y] : [xIntercept(0), 0];
+ pointCoords = y >= minY ? [maxX, y] : [xIntercept(minY), minY];
} else if (xDiff < 0 && yDiff < 0) {
- let x = xIntercept(0);
+ let x = xIntercept(minY);
- pointCoords = x >= 0 ? [x, 0] : [0, yIntercept(0)];
+ pointCoords = x >= minX ? [x, minY] : [minX, yIntercept(minX)];
} else {
- let y = yIntercept(0);
+ let y = yIntercept(minX);
- pointCoords = y <= maxY ? [0, y] : [xIntercept(maxY), maxY];
+ pointCoords = y <= maxY ? [minX, y] : [xIntercept(maxY), maxY];
}
return pointCoords;
}
+let cornerPoints;
+
function position(e) {
- let activeFiringArc = this.querySelector('polygon.firing-arc.active');
+ // let activeFiringArc = this.querySelector('polygon.firing-arc.active');
+ let activeFiringArc;
+ let size = this.querySelector('polygon.firing-arc.active').dataset.size;
// TODO: handle exactly horizontal and vertical lines
+ let grid = this.querySelector('.grid');
+ let testAim = this.querySelector('#test-arcs line');
+ let testOutline = this.querySelector('#test-arcs polyline');
+ let testArea = this.querySelector('#test-arcs polygon');
+
+ let pt = new DOMPoint(e.clientX, e.clientY);
+ let { x, y } = pt.matrixTransform(grid.getScreenCTM().inverse());
+
+ let pivotPt = [x1, y1] = [testAim.getAttribute('x1'), testAim.getAttribute('y1')].map(n => parseFloat(n));
+ let [maxX, maxY, minX, minY] = [
+ grid.getBBox().x + grid.getBBox().width,
+ grid.getBBox().y + grid.getBBox().height,
+ grid.getBBox().x,
+ grid.getBBox().y
+ ].map(n => parseFloat(n));
+
+ let edgePointArgs = [testAim.getAttribute('x1'), testAim.getAttribute('y1'), x, y, maxX, maxY, minX, minY].map(n => parseFloat(n))
+
+ let aimPt = [x2, y2] = edgePoint(...edgePointArgs);
+
+ testAim.setAttributeNS(null, 'x2', x2);
+ testAim.setAttributeNS(null, 'y2', y2);
+
+ // console.log(testAim);
+
+
+ let angle = calculateAngle(x2 - x1, y2 - y1);
+
+ let arcAngle = arcSize[size];
+ // let arcAngle = Math.PI / 4;
+ let distance = Math.sqrt((x2 - x1) ** 2 + (y2 - y1) ** 2);
+ let yDelta = distance * Math.cos(angle) * Math.tan(arcAngle);
+ let xDelta = distance * Math.sin(angle) * Math.tan(arcAngle);
+
+ let [newY1, newX1] = [y2 - yDelta, x2 - xDelta];
+ let [newY2, newX2] = [y2 + yDelta, x2 + xDelta];
+
+ let arcPt1 = [newX1, newY1] = edgePoint(x1, y1, newX1, newY1, maxX, maxY, minX, minY);
+ let arcPt2 = [newX2, newY2] = edgePoint(x1, y1, newX2, newY2, maxX, maxY, minX, minY);
+
+ testOutline.setAttributeNS(null, 'points', `${newX1},${newY1} ${x1},${y1} ${newX2},${newY2}`);
+
+ // console.log('area ', testArea.getAttribute('points').split(' ').map(n => n.split(',').map(n => Math.round(parseFloat(n)))).join(' \t'));
+ // console.log('lines ', testOutline.getAttribute('points').split(' ').map(n => n.split(',').map(n => Math.round(parseFloat(n)))).join(' \t'));
+
+ function touchSameEdge([x1, y1], [x2, y2]) {
+ // console.log('touchSameEdge', x1, y1, x2, y2);
+ return x1 === x2 || y1 === y2;
+ }
+
+ function touchOrthogonalEdges([x1, y1], [x2, y2]) {
+ let xLimit = [minX, maxX], yLimit = [minY, maxY];
+ return (xLimit.includes(x1) && yLimit.includes(y2)) || (yLimit.includes(y1) && xLimit.includes(x2));
+ }
+
+ function shareValue([x1, y1], [x2, y2]) {
+ return x1 === x2 || y1 === y2;
+ }
+
+ function findSharedValue(pt, ...pts) {
+ // which arcpt does aimpt share a value with?
+
+ // if they share an x value, we will look for corner y value
+ // if they share a y value, we will look for corner x value
+ // is aim pt non-shared value greater or less than arcpt non-shared value?
+
+ const sharedValPt = pts.find(([ptX, ptY]) => pt.includes(ptX) || pt.includes(ptY));
+ let limits = [[minX, maxX], [minY, maxY]];
+
+ if (!sharedValPt) {
+ return;
+ }
+
+ const nonSharedValIndex = pt[0] === sharedValPt[0] ? 1 : 0;
+ const cornerVal = pt[nonSharedValIndex] < sharedValPt[nonSharedValIndex] ? Math.min(...limits[nonSharedValIndex]) : Math.max(...limits[nonSharedValIndex]);
+ let cps = cornerPoints.filter(cp => cp[nonSharedValIndex] === cornerVal);
+
+ return cps;
+ }
+
+ console.log('cornerPoints', cornerPoints);
+
+ if (touchSameEdge(arcPt1, arcPt2)) {
+ // 0 corner case
+ console.log('0-corner case');
+ testArea.setAttributeNS(null, 'points', [pivotPt, arcPt1, arcPt2].join(' '));
+ } else if (touchOrthogonalEdges(arcPt1, arcPt2)) {
+ // 1 corner or 3 corner case
+ if (touchSameEdge(aimPt, arcPt1) || touchSameEdge(aimPt, arcPt2)) {
+ console.log('1-corner case');
+ let cp = cornerPoints.find(cp => shareValue(cp, arcPt1) && shareValue(cp, arcPt2));
+ testArea.setAttributeNS(null, 'points', [pivotPt, arcPt1, cp, arcPt2].join(' '));
+ } else {
+ console.log('3-corner case');
+ console.log('cornerPoints', cornerPoints);
+ let cps = cornerPoints.filter(cp => !shareValue(cp, arcPt1) || !shareValue(cp, arcPt2));
+ let index = cps.findIndex(cp => shareValue(cp, arcPt2));
+ console.log('cps', cps, 'index', index, 'arcPt2', arcPt2, 'arcPt1', arcPt1);
+ cps.splice(index + 1, 0, arcPt2, pivotPt, arcPt1);
+ console.log('after splice', cps);
+ // testArea.setAttributeNS(null, 'points', [pivotPt, arcPt1, cps.join(' '), arcPt2].join(' '));
+ testArea.setAttributeNS(null, 'points', cps.join(' '));
+ }
+ } else {
+ // 2 corner case
+ if (touchSameEdge(aimPt, arcPt1) || touchSameEdge(aimPt, arcPt2)) {
+ console.log('2-corner case, edge shared');
+ let cps = findSharedValue(aimPt, arcPt1, arcPt2);
+ let index = cps.findIndex(cp => shareValue(cp, arcPt2));
+ // console.log('cps', cps, 'index', index, 'arcPt2', arcPt2, 'arcPt1', arcPt1);
+ cps.splice(index + 1, 0, arcPt2, pivotPt, arcPt1);
+
+ // testArea.setAttributeNS(null, 'points', [pivotPt, arcPt1, cps.join(' '), arcPt2].join(' '));
+ testArea.setAttributeNS(null, 'points', cps.join(' '));
+ } else {
+ console.log('2-corner case, all separate edges');
+ let cps = cornerPoints.filter(cp => shareValue(cp, aimPt) || shareValue(cp, aimPt));
+ let index = cps.findIndex(cp => shareValue(cp, arcPt2));
+ cps.splice(index + 1, 0, arcPt2, pivotPt, arcPt1);
+
+ // testArea.setAttributeNS(null, 'points', [pivotPt, arcPt1, cps.join(' '), arcPt2].join(' '));
+ testArea.setAttributeNS(null, 'points', cps.join(' '));
+ }
+ }
+
+ // testArea.setAttributeNS(null, 'points', cornerPoints.join(' '));
+
+
+
+
+
+
+
+
+
+
+
+
if (activeFiringArc) {
let activeFiringArcOutline = this.querySelector(`#lines polygon[data-number="${activeFiringArc.dataset.number}"][data-allegiance="${activeFiringArc.dataset.allegiance}"]`),
board = this.querySelector('#image-maps'),
@@ -201,6 +343,37 @@ export default function (el) {
let outlineLayer = svg.querySelector('#lines');
let arcContainer = svg.querySelector('#firing-arcs');
+
+
+
+ let testArcs = svg.querySelector('#test-arcs');
+ let testAim = document.createElementNS(svgns, 'line');
+ testAim.setAttributeNS(null, 'x1', x);
+ testAim.setAttributeNS(null, 'y1', y);
+ testAim.setAttributeNS(null, 'x2', x);
+ testAim.setAttributeNS(null, 'y2', y);
+ testArcs.appendChild(testAim);
+
+ let testOutline = document.createElementNS(svgns, 'polyline');
+ testOutline.setAttributeNS(null, 'points', `${x},${y} ${x},${y} ${x},${y}`);
+ testArcs.appendChild(testOutline);
+
+ let testGrid = svg.querySelector('.grid');
+ let gridArea = document.createElementNS(svgns, 'polygon');
+
+ cornerPoints = (function () {
+ let { x, y, width, height } = testGrid.getBBox();
+ return [[x, y], [x + width, y], [x + width, y + height], [x, y + height]];
+ })();
+
+ gridArea.setAttributeNS(null, 'points', cornerPoints.join(' '));
+ testArcs.appendChild(gridArea);
+
+
+
+
+ // console.log(testArcs);
+
let grid = svg.querySelector('.board');
const transform = getComputedStyle(grid).transform.match(/-?\d+\.?\d*/g);
const pt = new DOMPoint(x, y);