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making mines snap to map when they stick

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landgreen
2020-01-11 19:11:41 -08:00
parent 63a6eb4e22
commit 69b7035a0b
3 changed files with 62 additions and 48 deletions
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90
js/bullets.js
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@@ -104,24 +104,22 @@ const b = {
count: 0,
effect() {
b.isModFarAwayDmg = true; //used in mob.damage()
game.drawList.push({ //draw range
//add dmg to draw queue
x: player.position.x,
y: player.position.y,
radius: 3000,
color: "rgba(255,0,0,0.05)",
time: 120
});
game.drawList.push({ //draw range
//add dmg to draw queue
x: player.position.x,
y: player.position.y,
radius: 500,
color: "rgba(0,0,0,0.2)",
time: 120
});
// game.drawList.push({ //draw range
// //add dmg to draw queue
// x: player.position.x,
// y: player.position.y,
// radius: 3000,
// color: "rgba(255,0,0,0.05)",
// time: 120
// });
// game.drawList.push({ //draw range
// //add dmg to draw queue
// x: player.position.x,
// y: player.position.y,
// radius: 500,
// color: "rgba(0,0,0,0.2)",
// time: 120
// });
}
},
{
@@ -1734,7 +1732,7 @@ const b = {
name: "mine", //10
description: "drop a <strong>proximity</strong> mine that <strong>sticks</strong> to walls<br>fires <strong>nails</strong> at enemies within range",
ammo: 0,
ammoPack: 6,
ammoPack: 4,
have: false,
isStarterGun: false,
fire() {
@@ -1783,20 +1781,20 @@ const b = {
});
}
World.add(engine.world, bullet[me]); //add bullet to world
bullet[me].endCycle = game.cycle + 1800 + 360 * Math.random();
bullet[me].seeFrom = null;
bullet[me].endCycle = game.cycle + 2000 + 360 * Math.random();
bullet[me].restitution = 0;
bullet[me].lookFrequency = 41 + Math.floor(23 * Math.random())
bullet[me].range = 700
bullet[me].arm = function () {
this.do = function () { //overwrite the do method for this bullet
this.force.y += this.mass * 0.002; //extra gravity
if (!(game.cycle % this.lookFrequency)) { //find mob targets
for (let i = 0, len = mob.length; i < len; ++i) {
if (Vector.magnitudeSquared(Vector.sub(this.seeFrom, mob[i].position)) < 500000 &&
if (Vector.magnitudeSquared(Vector.sub(this.position, mob[i].position)) < 500000 &&
mob[i].dropPowerUp &&
Matter.Query.ray(map, this.seeFrom, mob[i].position).length === 0 &&
Matter.Query.ray(body, this.seeFrom, mob[i].position).length === 0) {
Matter.Query.ray(map, this.position, mob[i].position).length === 0 &&
Matter.Query.ray(body, this.position, mob[i].position).length === 0) {
this.endCycle = 0 //end life if mob is near and visible
}
}
@@ -1809,22 +1807,39 @@ const b = {
if (collide.length > 0) {
for (let i = 0; i < collide.length; i++) {
if (collide[i].bodyA.collisionFilter.category === cat.map || collide[i].bodyB.collisionFilter.category === cat.map) {
this.seeFrom = Vector.add(this.position, Vector.mult(collide[i].normal, -20)) //find the location 20 pixels perpendicular to the map
// console.log()
// console.log(collide)
const angle = Matter.Vector.angle(collide[i].normal, {
x: 1,
y: 0
})
if (angle > -0.1) Matter.Body.setStatic(this, true)
this.arm();
if (angle > -0.2 || angle < -1.5) { //don't stick to level ground
Matter.Body.setAngle(this, Math.atan2(collide[i].tangent.y, collide[i].tangent.x))
//move until touching map again after rotation
for (let j = 0; j < 10; j++) {
if (Matter.Query.collides(this, map).length > 0) {
Matter.Body.setStatic(this, true) //don't set to static if not touching map
this.arm();
//sometimes the mine can't attach to map and it just needs to explode
const who = this
setTimeout(function () {
if (Matter.Query.collides(who, map).length === 0) who.endCycle = 0 // if not touching map explode
}, 100, who);
break
}
//move until you are touching the wall
Matter.Body.setPosition(this, Vector.add(this.position, Vector.mult(collide[i].normal, 2)))
}
} else if (this.speed < 1) {
this.arm();
}
}
}
} else { //check if collides with a body
} else if (this.speed < 1) { //check if collides with a body
collide = Matter.Query.collides(this, body)
if (collide.length > 0) {
for (let i = 0; i < collide.length; i++) {
if (collide[i].bodyA.collisionFilter.category === cat.body || collide[i].bodyB.collisionFilter.category === cat.body) {
this.seeFrom = this.position
this.arm();
}
}
@@ -1832,20 +1847,19 @@ const b = {
}
}
bullet[me].onEnd = function () {
if (!this.seeFrom) this.seeFrom = this.position
const targets = [] //target nearby mobs
for (let i = 0, len = mob.length; i < len; i++) {
if (mob[i].dropPowerUp) {
const dist = Vector.magnitudeSquared(Vector.sub(this.seeFrom, mob[i].position));
const dist = Vector.magnitudeSquared(Vector.sub(this.position, mob[i].position));
if (dist < 1440000 && //1200*1200
Matter.Query.ray(map, this.seeFrom, mob[i].position).length === 0 &&
Matter.Query.ray(body, this.seeFrom, mob[i].position).length === 0) {
Matter.Query.ray(map, this.position, mob[i].position).length === 0 &&
Matter.Query.ray(body, this.position, mob[i].position).length === 0) {
targets.push(Vector.add(mob[i].position, Vector.mult(mob[i].velocity, Math.sqrt(dist) / 60))) //predict where the mob will be in a few cycles
}
}
}
for (let i = 0; i < 14; i++) {
const speed = 55 + 10 * Math.random()
for (let i = 0; i < 16; i++) {
const speed = 53 + 10 * Math.random()
if (targets.length > 0) { // aim near a random target in array
const index = Math.floor(Math.random() * targets.length)
const SPREAD = 150 / targets.length
@@ -1853,10 +1867,10 @@ const b = {
x: targets[index].x + SPREAD * (Math.random() - 0.5),
y: targets[index].y + SPREAD * (Math.random() - 0.5)
}
b.nail(this.seeFrom, Vector.mult(Vector.normalise(Vector.sub(WHERE, this.seeFrom)), speed), 0.5)
b.nail(this.position, Vector.mult(Vector.normalise(Vector.sub(WHERE, this.position)), speed), 0.8)
} else { // aim in random direction
const ANGLE = 2 * Math.PI * Math.random()
b.nail(this.seeFrom, {
b.nail(this.position, {
x: speed * Math.cos(ANGLE),
y: speed * Math.sin(ANGLE)
})