Make the maw struggle smoother

The passive movement is now cyclic, rather than completely random.
Swallows, slurps, and player movements are applied over a period
of time.

stories/geta-unaware.js

@@ -26,6 +26,42 @@
         return choices[Math.floor(Math.random() * choices.length)];
     }
 
+    function limbsLost(state) {
+        return Object.entries(state.player.limbs).filter(([name, status]) => {
+            return !status;
+        }).length;
+    }
+
+    function statLerp(id, stat, change, duration) {
+        const iterations = duration / 1000 * 60;
+        startTimer({
+            id: id,
+            func: state => {
+                changeStat(stat, change / iterations, state);
+                return true;
+            },
+            delay: 1000 / 60,
+            loop: true,
+            classes: [
+
+            ]
+        }, state);
+
+        startTimer({
+            id: id + "-stopper",
+            func: state => {
+                stopTimer(id, state);
+                return false;
+            },
+            delay: duration,
+            loop: false,
+            classes: [
+
+            ]
+        }, state);
+
+
+    }
     const limbs = {
         head: "head",
         leftArm: "left arm",
@@ -490,14 +526,31 @@
                     state.geta.slurps = 0;
                     state.geta.chews = 0;
                     state.geta.swallowsLeft = 3 + Math.floor(Math.random() * 3);
+                    state.geta.mawMovement = 1;
 
                     startTimer({
                         id: "maw-random-movement",
                         func: state => {
-                            changeStat("mawPos", Math.random() / 50 - 0.01, state);
+                            const time = new Date().getTime();
+                            const movementFactor = (state.geta.mawMovement + limbsLost(state));
+                            const fastPart = Math.sin(time / 200) / 1600 / 3;
+                            const slowPart = Math.sin(time / 1000) / 1600;
+                            changeStat("mawPos", movementFactor * (fastPart + slowPart), state);
+
+                            if (getStat("mawPos", state) <= 0.02) {
+                                print(["You slip too far back. Geta doesn't even have to try to swallow you like the food you are."]);
+                                goToRoom("throat", state);
+                                return false;
+                            } else if (getStat("mawPos", state) >= 0.98) {
+                                print(["Geta's jaws close like a falling guillotine's blade. You're crushed like an insect. A sharp gulp drags you down to the fox's guts."]);
+                                changeStat("health", -90, state);
+                                goToRoom("stomach", state);
+                                return false;
+                            }
+
                             return true;
                         },
-                        delay: 100,
+                        delay: 1000 / 60,
                         loop: true,
                         classes: [
                             "maw-struggle"
@@ -508,17 +561,6 @@
                         id: "maw-struggle",
                         func: state => {
 
-                            if (getStat("mawPos", state) <= 0.05) {
-                                print(["You slip too far back. Geta doesn't even have to try to swallow you like the food you are."]);
-                                goToRoom("throat", state);
-                                return false;
-                            } else if (getStat("mawPos", state) >= 0.95) {
-                                print(["Geta's jaws close like a falling guillotine's blade. You're crushed like an insect. A sharp gulp drags you down to the fox's guts."]);
-                                changeStat("health", -90, state);
-                                goToRoom("stomach", state);
-                                return false;
-                            }
-
                             if (state.geta.swallowsLeft <= 0) {
                                 print(["Geta picks up his bowl of cereal and drinks it down, swallowing you in the process."]);
                                 goToRoom("throat", state);
@@ -527,7 +569,9 @@
 
                             let choice;
 
-                            if (Math.random() > state.geta.slurps / 3) {
+                            if (Math.random() < 0.1) {
+                                choice = "slosh";
+                            } else if (Math.random() > state.geta.slurps / 3) {
                                 choice = "slurp";
                             } else if (state.geta.chews - Math.floor(Math.random() * 3) < state.geta.slurps) {
                                 choice = "chew";
@@ -542,7 +586,7 @@
                                     return false;
                                 } else {
                                     print(["Swallows"]);
-                                    changeStat("mawPos", -0.25, state);
+                                    statLerp("maw-swallow", "mawPos", -0.25, 500);
                                     state.geta.slurps = 0;
                                     state.geta.chews = 0;
                                     state.geta.swallowsLeft -= 1;
@@ -550,22 +594,49 @@
                                 }
 
                             } else if (choice == "slurp") {
-                                changeStat("mawPos", -0.1, state);
+                                statLerp("maw-swallow", "mawPos", -0.1, 250);
                                 print(["Slurps"]);
                                 state.geta.slurps += 1;
                                 return Math.random() * 1000 + 1500;
                             } else if (choice == "chew") {
                                 if (getStat("mawPos", state) > 0.85) {
-                                    print(["Chewed!"]);
-                                    changeStat("health", -90, state);
-                                    goToRoom("stomach", state);
-                                    return false;
+                                    const limb = randomBodyPart(state);
+                                    state.player.limbs[limb] = false;
+                                    const limbName = limbs[limb];
+
+                                    if (limb == "head") {
+                                        print(["He chewed your head :((("]);
+                                        changeStat("health", -100, state);
+                                        goToRoom("stomach", state);
+                                    } else {
+                                        print(["He chewed your " + limbName + " :("]);
+                                        changeStat("health", -40, state);
+                                        return true;
+                                    }
+
                                 } else {
                                     print(["Chews"]);
                                     state.geta.chews += 1;
                                     return Math.random() * 500 + 1000;
                                 }
+                            } else if (choice == "slosh") {
+                                print(["Geta's tongue sloshes from side to side, throwing you around his maw like a ship in a storm."]);
+                                state.geta.mawMovement = 3;
+                                startTimer({
+                                    id: "maw-slosh-end",
+                                    func: state => {
+                                        state.geta.mawMovement = 1;
+                                        print(["The sloshing ends."]);
+                                        return true;
+                                    },
+                                    delay: 4000,
+                                    loop: false,
+                                    classes: [
+                                        "maw-struggle"
+                                    ]
+                                }, state);
 
+                                return Math.random() * 1500 + 4500;
                             }
                         },
                         delay: 0,
@@ -604,7 +675,7 @@
                         desc: "Pull yourself away from the fox's throat! Just don't go too far forward...",
                         execute: (room, state) => {
                             print(["You drag yourself forward"]);
-                            changeStat("mawPos", Math.random() * 0.1 + 0.15, state);
+                            statLerp("maw-swallow", "mawPos", 0.15 + Math.random() * 0.05, 250);
                         },
                         show: [
 
@@ -617,9 +688,14 @@
                         name: "Slip Back",
                         desc: "Slide back towards Geta's gullet",
                         execute: (room, state) => {
-                            print(["You let yourself slip back"]);
-                            changeStat("mawPos", -Math.random() / 5 - 0.2, state);
-
+                            if (Math.random() < 0.9){ 
+                                print(["You let yourself slip back."]);
+                                statLerp("maw-swallow", "mawPos", -0.2 - Math.random() * 0.1, 250);
+                            } else {
+                                print(["You lose your grip, sliding back quite far!"]);
+                                statLerp("maw-swallow", "mawPos", -0.3 - Math.random() * 0.15, 250);
+                            }
+                            
                         },
                         show: [