index : btroops | |
Virtual board game-aid for BattleTroops, an infantry combat simulator wargame published by FASA in 1989. |
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author | Catalin Mititiuc <webdevcat@proton.me> | 2024-04-27 15:58:11 -0700 |
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committer | Catalin Mititiuc <webdevcat@proton.me> | 2024-04-27 15:58:11 -0700 |
commit | ce98e325656b8419b80d8c248e0469f3a9708322 (patch) | |
tree | 293c5e23601195be80161912275277554fcfb07e /src/modules/game/sightLine.js | |
parent | 75a0c37ea5e5a9fa395690984c373536e8efccfa (diff) |
Rename some files
Diffstat (limited to 'src/modules/game/sightLine.js')
-rw-r--r-- | src/modules/game/sightLine.js | 145 |
1 files changed, 0 insertions, 145 deletions
diff --git a/src/modules/game/sightLine.js b/src/modules/game/sightLine.js deleted file mode 100644 index 6b94514..0000000 --- a/src/modules/game/sightLine.js +++ /dev/null @@ -1,145 +0,0 @@ -const targetClassName = 'sight-line-target', - activeClassName = 'active'; - -function evenr_to_axial(x, y) { - return { q: x - (y + (y & 1)) / 2, r: y }; -} - -function axial_to_evenr(q, r) { - return { x: q + (r + (r & 1)) / 2, y: r }; -} - -function axial_distance(q1, r1, q2, r2) { - return (Math.abs(q1 - q2) + Math.abs(q1 + r1 - q2 - r2) + Math.abs(r1 - r2)) / 2; -} - -function offset_distance(x1, y1, x2, y2) { - const { q: q1, r: r1 } = evenr_to_axial(x1, y1), - { q: q2, r: r2 } = evenr_to_axial(x2, y2); - - return axial_distance(q1, r1, q2, r2); -} - -function cube_to_axial(q, r, _) { - return { q, r }; -} - -function axial_to_cube(q, r) { - return { q, r, s: -q - r }; -} - -function cube_round(q, r, s) { - let rQ = Math.round(q), - rR = Math.round(r), - rS = Math.round(s); - - const q_diff = Math.abs(rQ - q), - r_diff = Math.abs(rR - r), - s_diff = Math.abs(rS - s); - - if (q_diff > r_diff && q_diff > s_diff) { - rQ = -rR - rS; - } else if (r_diff > s_diff) { - rR = -rQ - rS; - } else { - rS = -rQ - rR; - } - - return { q: rQ, r: rR, s: rS }; -} - -function axial_round(q, r) { - const cube = axial_to_cube(q, r), - round = cube_round(cube.q, cube.r, cube.s), - axial = cube_to_axial(round.q, round.r, round.s); - - return { q: axial.q, r: axial.r }; -} - -function lerp(a, b, t) { - return a + (b - a) * t; -} - -function axial_lerp(q1, r1, q2, r2, t) { - return { q: lerp(q1, q2, t), r: lerp(r1, r2, t) }; -} - -function lock(sightLine, cell) { - sightLine.classList.remove(activeClassName); - cell.classList.add(targetClassName); - - return cell; -} - -function unlock(sightLine, lockTarget) { - sightLine.classList.add(activeClassName); - lockTarget.classList.remove(targetClassName); - - return null; -} - -let sightLine, lockTarget, - activeHexes = []; - -export function create({ x: x1, y: y1 }, { x: x2, y: y2 }) { - const line = document.createElementNS(svgns, 'line'); - - line.classList.add('sight-line'); - line.classList.add(activeClassName); - line.setAttributeNS(null, 'x1', x1); - line.setAttributeNS(null, 'y1', y1); - line.setAttributeNS(null, 'x2', x2); - line.setAttributeNS(null, 'y2', y2); - - sightLine = line; - - return line; -} - -export function calcIndexes(x1, y1, x2, y2) { - const axial1 = evenr_to_axial(x1, y1), - axial2 = evenr_to_axial(x2, y2), - n = offset_distance(x1, y1, x2, y2), - results = []; - - for (let i = 0; i <= n; i++) { - const lerp = axial_lerp(axial1.q, axial1.r, axial2.q, axial2.r, 1.0 / n * i), - round = axial_round(lerp.q, lerp.r), - { x, y } = axial_to_evenr(round.q, round.r); - - results.push([x, y]); - } - - return results; -} - -export function clear() { - sightLine && sightLine.remove(); - sightLine = null; - - lockTarget && lockTarget.classList.remove(targetClassName); - lockTarget = null; -} - -export function update({ x, y }) { - sightLine.setAttributeNS(null, 'x1', x); - sightLine.setAttributeNS(null, 'y1', y); -} - -export function toggleLock(cell) { - lockTarget = lockTarget ? unlock(sightLine, lockTarget) : lock(sightLine, cell); -} - -export function getSightLine() { - return sightLine; -} - -export function getLockTarget() { - return lockTarget; -} - -export function setHexes(hexes) { - activeHexes.forEach(h => h.classList.remove(activeClassName)); - hexes.forEach(h => h.classList.add(activeClassName)); - activeHexes = hexes; -} |