add platform types

Co-authored-by: Copilot <copilot@github.com>

src/game/gameUtils.js

@@ -1,6 +1,31 @@
+import { PLAT_TYPE } from './constants.js';
+
+
+function handleJump(player, platform) {
+
+  let elevationGain = 0;
+  if (player.elevation < platform.elevation) {
+    elevationGain = platform.elevation - player.elevation;
+    player.elevation = platform.elevation;
+  }
+
+  switch (platform.type) {
+    case PLAT_TYPE.ONE_TIME:
+      player.vel.y = -7.5;
+      platform.remove();
+      break;
+    case PLAT_TYPE.SPRING:
+      player.vel.y = -13;
+      break;
+    default:
+      player.vel.y = -7.5;
+  }
+
+  return elevationGain;
+}
 
 export function updatePlayerPosition(player, platforms) {
-  let elevationGain = 0;
+
   // Controls
   player.vel.x = 0;
   if (keyIsDown(LEFT_ARROW)) {
@@ -10,7 +35,7 @@ export function updatePlayerPosition(player, platforms) {
     player.vel.x = 5;
   }
 
-   // Wrap horizontally around canvas edges
+  // Wrap horizontally
   if (player.x > width) {
     player.x = 0;
   } else if (player.x < 0) {
@@ -19,7 +44,7 @@ export function updatePlayerPosition(player, platforms) {
 
   // Jumping thrue platforms
   for (let plat of platforms) {
-    if (player.vel.y <= 0 && player.y > plat.y) {
+    if (player.vel.y <= 0 && player.y + player.offset.y > plat.y) {
       plat.collider = 'none';
     } else {
       plat.collider = 'static';
@@ -27,19 +52,14 @@ export function updatePlayerPosition(player, platforms) {
   }
 
   // Automatic jumping
-  if(player.vel.y >= 0) {
-    for (let plat of platforms) {
-      if (player.colliding(plat)) {
-        player.vel.y = -7.5;
-        
-        if (player.elevation < plat.elevation) {
-          elevationGain = plat.elevation - player.elevation;
-          player.elevation = plat.elevation;
-        }
-        break;
+  if (player.vel.y >= 0) {
+    for (let i = 0; i < platforms.length; i++) {
+
+      if (player.colliding(platforms[i])) {
+        return handleJump(player, platforms[i]);
       }
     }
   }
- 
-  return elevationGain;
+
+  return 0;
 }