Adds a laser pointer showing shot trajectories in Tank Trouble!
此腳本不應該直接安裝，它是一個供其他腳本使用的函式庫。欲使用本函式庫，請在腳本 metadata 寫上： // @require https://update.gf.qytechs.cn/scripts/530735/1559176/Tank%20Trouble%20Laser%20Pointer.js
// ==UserScript==
// @name Tank Trouble Laser Pointer
// @namespace http://tampermonkey.net/
// @version 0.1
// @description Adds a laser pointer showing shot trajectories in Tank Trouble!
// @author You
// @match https://tanktrouble.com
// @grant none
// ==/UserScript==
(function() {
'use strict';
// Wait for game to load
function waitForGame() {
return new Promise(resolve => {
const check = setInterval(() => {
if (typeof window.game !== 'undefined') {
clearInterval(check);
resolve();
}
}, 100);
});
}
// Helper functions
function getTankPosition() {
return {
x: window.game.tank.x,
y: window.game.tank.y,
direction: window.game.tank.direction
};
}
function calculateTrajectory(startX, startY, direction) {
const trajectory = [];
const speed = 500; // Bullet speed
let x = startX;
let y = startY;
let vx = Math.cos(direction) * speed;
let vy = Math.sin(direction) * speed;
// Calculate trajectory points
while (x >= 0 && x <= window.game.canvas.width &&
y >= 0 && y <= window.game.canvas.height) {
trajectory.push({x, y});
// Check for wall collisions
const wall = checkWallCollision(x, y);
if (wall) {
// Calculate reflection
if (wall.horizontal) {
vy = -vy * 0.8; // Energy loss on bounce
} else {
vx = -vx * 0.8;
}
}
x += vx * 0.016; // Update position
y += vy * 0.016;
}
return trajectory;
}
function checkWallCollision(x, y) {
// Check walls (simplified collision detection)
const padding = 20;
if (x <= padding) return { horizontal: false, vertical: true };
if (x >= window.game.canvas.width - padding) return { horizontal: false, vertical: true };
if (y <= padding) return { horizontal: true, vertical: false };
if (y >= window.game.canvas.height - padding) return { horizontal: true, vertical: false };
return null;
}
// Main enhancement function
async function enhanceGame() {
await waitForGame();
// Store original draw function
const originalDraw = window.game.draw;
// Override draw function with enhanced visibility
window.game.draw = function() {
originalDraw.call(window.game);
// Draw laser pointer with enhanced visibility
const ctx = window.game.canvas.getContext('2d');
const tank = getTankPosition();
const trajectory = calculateTrajectory(tank.x, tank.y, tank.direction);
// Draw trajectory with multiple styles for better visibility
ctx.beginPath();
ctx.moveTo(tank.x, tank.y);
trajectory.forEach(point => {
ctx.lineTo(point.x, point.y);
});
// Draw with glow effect
ctx.shadowBlur = 10;
ctx.shadowColor = 'rgba(255, 0, 0, 0.8)';
ctx.strokeStyle = 'rgba(255, 0, 0, 0.8)';
ctx.lineWidth = 3;
ctx.stroke();
// Draw with solid line
ctx.shadowBlur = 0;
ctx.strokeStyle = 'rgba(255, 255, 255, 0.8)';
ctx.lineWidth = 2;
ctx.stroke();
// Draw starting point
ctx.beginPath();
ctx.arc(tank.x, tank.y, 5, 0, Math.PI * 2);
ctx.fillStyle = 'rgba(255, 0, 0, 0.8)';
ctx.fill();
};
}
// Start enhancements when page loads
enhanceGame();
})();