forked from sent/waves
75 lines
3.4 KiB
JavaScript
75 lines
3.4 KiB
JavaScript
/// <reference path="../FullScreenMario.ts" />
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var FullScreenMario;
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(function (FullScreenMario) {
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"use strict";
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FullScreenMario.FullScreenMario.settings.math = {
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"equations": {
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/**
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* Decreases a player's jumping yvel based on whether it's running.
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*/
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"decreasePlayerJumpingYvel": function (constants, equations, player) {
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var jumpmod = player.FSM.MapScreener.jumpmod - player.xvel * .0014, power = Math.pow(player.keys.jumplev, jumpmod), dy = player.FSM.unitsize / power;
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player.yvel = Math.max(player.yvel - dy, constants.maxyvelinv);
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},
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/**
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* Decreases a player's running xvel based on whether it's sprinting.
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* @returns {Boolean} True if the player started or stopped skidding,
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* or false if the skidding status was unchanged.
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*/
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"decreasePlayerRunningXvel": function (constants, equations, player) {
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// If a button is pressed, hold/increase speed
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if (player.keys.run !== 0 && !player.crouching) {
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var dir = player.keys.run,
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// No sprinting underwater
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sprinting = Number(player.keys.sprint && !player.FSM.MapScreener.underwater) || 0, adder = dir * (.098 * (Number(sprinting) + 1)), decel = 0, skiddingChanged = false;
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// Reduce the speed, both by subtracting and dividing a little
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player.xvel += adder || 0;
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player.xvel *= .98;
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decel = .0007;
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// If you're accelerating in the opposite direction from your current velocity, that's a skid
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if ((player.keys.run > 0) === player.moveleft) {
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if (!player.skidding) {
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player.skidding = true;
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skiddingChanged = true;
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}
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}
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else if (player.skidding) {
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// Not accelerating: make sure you're not skidding
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player.skidding = false;
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skiddingChanged = true;
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}
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}
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else {
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// Otherwise slow down a bit
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player.xvel *= .98;
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decel = .035;
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}
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if (player.xvel > decel) {
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player.xvel -= decel;
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}
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else if (player.xvel < -decel) {
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player.xvel += decel;
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}
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else if (player.xvel !== 0) {
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player.xvel = 0;
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if (!player.FSM.MapScreener.nokeys && player.keys.run === 0) {
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if (player.keys.leftDown) {
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player.keys.run = -1;
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}
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else if (player.keys.rightDown) {
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player.keys.run = 1;
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}
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}
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}
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return skiddingChanged;
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},
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/**
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* @return A player's yvel for when it's riding up a springboard.
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*/
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"springboardYvelUp": function (constants, equations, thing) {
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return Math.max(thing.FSM.unitsize * -2, thing.tensionSave * -.98);
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}
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}
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};
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})(FullScreenMario || (FullScreenMario = {}));
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