Files
n-gon-improved/js/engine.js
landgreen 5c466b4e09 shieldingBoss
shieldingBoss - doesn't attack, but shields all mobs every 2.5s

reworked how tetherBoss's constraint work
  please, let me know if the tether boss is buggy on any of the levels
  the chance for tether boss was removed from level: detours

tech: flip-flop - collisions do 25% more harm, but you become immune to harm for the next collision
2021-02-26 05:10:25 -08:00

232 lines
11 KiB
JavaScript

//matter.js ***********************************************************
// module aliases
const Engine = Matter.Engine,
World = Matter.World,
Events = Matter.Events,
Composites = Matter.Composites,
Composite = Matter.Composite,
Constraint = Matter.Constraint,
Vertices = Matter.Vertices,
Query = Matter.Query,
Body = Matter.Body,
Bodies = Matter.Bodies,
Vector = Matter.Vector;
// create an engine
const engine = Engine.create();
engine.world.gravity.scale = 0; //turn off gravity (it's added back in later)
// engine.velocityIterations = 100
// engine.positionIterations = 100
// engine.enableSleeping = true
// matter events
function playerOnGroundCheck(event) {
//runs on collisions events
function enter() {
m.numTouching++;
if (!m.onGround) {
m.onGround = true;
if (m.crouch) {
if (m.checkHeadClear()) {
m.undoCrouch();
} else {
m.yOffGoal = m.yOffWhen.crouch;
}
} else {
//sets a hard land where player stays in a crouch for a bit and can't jump
//crouch is forced in groundControl below
const momentum = player.velocity.y * player.mass //player mass is 5 so this triggers at 26 down velocity, unless the player is holding something
if (momentum > 130) {
m.doCrouch();
m.yOff = m.yOffWhen.jump;
m.hardLandCD = m.cycle + Math.min(momentum / 6.5 - 6, 40)
} else {
m.yOffGoal = m.yOffWhen.stand;
}
}
}
}
const pairs = event.pairs;
for (let i = 0, j = pairs.length; i != j; ++i) {
let pair = pairs[i];
if (pair.bodyA === jumpSensor) {
m.standingOn = pair.bodyB; //keeping track to correctly provide recoil on jump
if (m.standingOn.alive !== true) enter();
} else if (pair.bodyB === jumpSensor) {
m.standingOn = pair.bodyA; //keeping track to correctly provide recoil on jump
if (m.standingOn.alive !== true) enter();
}
}
m.numTouching = 0;
}
function playerOffGroundCheck(event) {
//runs on collisions events
const pairs = event.pairs;
for (let i = 0, j = pairs.length; i != j; ++i) {
if (pairs[i].bodyA === jumpSensor || pairs[i].bodyB === jumpSensor) {
if (m.onGround && m.numTouching === 0) {
m.onGround = false;
m.hardLandCD = 0 // disable hard landing
if (m.checkHeadClear()) {
if (m.crouch) {
m.undoCrouch();
}
m.yOffGoal = m.yOffWhen.jump;
}
}
}
}
}
function collisionChecks(event) {
const pairs = event.pairs;
for (let i = 0, j = pairs.length; i != j; i++) {
//mob + (player,bullet,body) collisions
for (let k = 0; k < mob.length; k++) {
if (mob[k].alive && m.alive) {
if (pairs[i].bodyA === mob[k]) {
collideMob(pairs[i].bodyB);
break;
} else if (pairs[i].bodyB === mob[k]) {
collideMob(pairs[i].bodyA);
break;
}
function collideMob(obj) {
//player + mob collision
if (
m.immuneCycle < m.cycle &&
(obj === playerBody || obj === playerHead) &&
// (obj === player) &&
!(tech.isFreezeHarmImmune && (mob[k].isSlowed || mob[k].isStunned))
) {
mob[k].foundPlayer();
let dmg = Math.min(Math.max(0.025 * Math.sqrt(mob[k].mass), 0.05), 0.3) * simulation.dmgScale; //player damage is capped at 0.3*dmgScale of 1.0
if (tech.isRewindAvoidDeath && m.energy > 0.66) { //CPT reversal runs in m.damage, but it stops the rest of the collision code here too
m.damage(dmg);
return
}
if (tech.isAnthropicHarm) {
if (!tech.isAnthropicHarmImmune) {
tech.isAnthropicHarmImmune = true
if (document.getElementById("tech-flip-flop")) document.getElementById("tech-flip-flop").innerHTML = ` = on`
m.damage(dmg * 1.25); //damage triggers immune to next hit with extra 10% damage
} else {
tech.isAnthropicHarmImmune = false //immune to damage this hit, lose immunity for next hit
if (document.getElementById("tech-flip-flop")) document.getElementById("tech-flip-flop").innerHTML = ` = off`
}
} else {
m.damage(dmg); //normal damage
}
if (tech.isPiezo) m.energy += 20.48;
if (tech.isBayesian) powerUps.ejectTech()
if (mob[k].onHit) mob[k].onHit(k);
m.immuneCycle = m.cycle + tech.collisionImmuneCycles; //player is immune to collision damage for 30 cycles
//extra kick between player and mob //this section would be better with forces but they don't work...
let angle = Math.atan2(player.position.y - mob[k].position.y, player.position.x - mob[k].position.x);
Matter.Body.setVelocity(player, {
x: player.velocity.x + 8 * Math.cos(angle),
y: player.velocity.y + 8 * Math.sin(angle)
});
Matter.Body.setVelocity(mob[k], {
x: mob[k].velocity.x - 8 * Math.cos(angle),
y: mob[k].velocity.y - 8 * Math.sin(angle)
});
if (tech.isAnnihilation && !mob[k].shield && !mob[k].isShielded && mob[k].dropPowerUp && m.energy > 0.34 * m.maxEnergy) {
m.energy -= 0.33 * m.maxEnergy
m.immuneCycle = 0; //player doesn't go immune to collision damage
mob[k].death();
simulation.drawList.push({ //add dmg to draw queue
x: pairs[i].activeContacts[0].vertex.x,
y: pairs[i].activeContacts[0].vertex.y,
radius: dmg * 2000,
color: "rgba(255,0,255,0.2)",
time: simulation.drawTime
});
} else {
simulation.drawList.push({ //add dmg to draw queue
x: pairs[i].activeContacts[0].vertex.x,
y: pairs[i].activeContacts[0].vertex.y,
radius: dmg * 500,
color: simulation.mobDmgColor,
time: simulation.drawTime
});
}
return;
// }
}
//mob + bullet collisions
if (obj.classType === "bullet" && obj.speed > obj.minDmgSpeed) {
obj.beforeDmg(mob[k]); //some bullets do actions when they hits things, like despawn //forces don't seem to work here
let dmg = b.dmgScale * (obj.dmg + 0.15 * obj.mass * Vector.magnitude(Vector.sub(mob[k].velocity, obj.velocity)))
if (tech.isCrit && mob[k].isStunned) dmg *= 4
mob[k].foundPlayer();
mob[k].damage(dmg);
simulation.drawList.push({ //add dmg to draw queue
x: pairs[i].activeContacts[0].vertex.x,
y: pairs[i].activeContacts[0].vertex.y,
radius: Math.log(2 * dmg + 1.1) * 40,
color: simulation.playerDmgColor,
time: simulation.drawTime
});
return;
}
//mob + body collisions
if (obj.classType === "body" && obj.speed > 6) {
const v = Vector.magnitude(Vector.sub(mob[k].velocity, obj.velocity));
if (v > 9) {
let dmg = 0.05 * b.dmgScale * v * obj.mass * tech.throwChargeRate;
if (mob[k].isShielded) dmg *= 0.35
mob[k].damage(dmg, true);
if (tech.isBlockPowerUps && !mob[k].alive && mob[k].dropPowerUp) {
let type = tech.isEnergyNoAmmo ? "heal" : "ammo"
if (Math.random() < 0.4) {
type = "heal"
} else if (Math.random() < 0.3 && !tech.isSuperDeterminism) {
type = "research"
}
powerUps.spawn(mob[k].position.x, mob[k].position.y, type);
// for (let i = 0, len = Math.ceil(2 * Math.random()); i < len; i++) {}
}
const stunTime = dmg / Math.sqrt(obj.mass)
if (stunTime > 0.5) mobs.statusStun(mob[k], 30 + 60 * Math.sqrt(stunTime))
if (mob[k].distanceToPlayer2() < 1000000 && !m.isCloak) mob[k].foundPlayer();
if (tech.fragments && obj.speed > 10 && !obj.hasFragmented) {
obj.hasFragmented = true;
b.targetedNail(obj.position, tech.fragments * 4)
}
simulation.drawList.push({
x: pairs[i].activeContacts[0].vertex.x,
y: pairs[i].activeContacts[0].vertex.y,
radius: Math.log(2 * dmg + 1.1) * 40,
color: simulation.playerDmgColor,
time: simulation.drawTime
});
return;
}
}
}
}
}
}
}
//determine if player is on the ground
Events.on(engine, "collisionStart", function(event) {
playerOnGroundCheck(event);
// playerHeadCheck(event);
collisionChecks(event);
});
Events.on(engine, "collisionActive", function(event) {
playerOnGroundCheck(event);
// playerHeadCheck(event);
});
Events.on(engine, "collisionEnd", function(event) {
playerOffGroundCheck(event);
});