From 3f733eea06f871a8ad66f66fb175494cafde8ade Mon Sep 17 00:00:00 2001
From: Mottributo <87079566+Mottributo@users.noreply.github.com>
Date: Sun, 26 Mar 2023 19:36:47 +0300
Subject: [PATCH] implementing platforms 50% done

---
 sketch.js | 44 +++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 39 insertions(+), 5 deletions(-)

diff --git a/sketch.js b/sketch.js
index cc3565e..9ff608e 100644
--- a/sketch.js
+++ b/sketch.js
@@ -40,7 +40,9 @@ function GameCharacter() {
     this.isFalling = false;
     this.isJumping = false;
     this.isPlummeting = false;
+    this.isOnPlatform = false;
     this.curGroundIndex = 0;
+    this.memorizedPlatform;
 
     this._updateSprite = function () {
         if (this.isPlummeting) {
@@ -79,7 +81,7 @@ function GameCharacter() {
             }
         }
         this._drawHead = function () {
-            fill(palette.head_color);
+            fill(palette.ground_colors[this.curGroundIndex]);
             ellipse(
                 this.x,
                 this.y - this.y_step * 5,
@@ -267,10 +269,11 @@ function GameCharacter() {
             } else if (this.isRight && !this.isLeft) {
                 this.x += this.speed;
             }
-
             if (this.isJumping) {
+                this.memorizedPlatform = undefined;
                 this.y -= this.curJumpingStrength;
                 this.curJumpingStrength -= gravity;
+                // If the jump peak is reached, the character is considered to be falling instead.
                 if (this.curJumpingStrength <= 0) {
                     this.isFalling = true;
                     this.isJumping = false;
@@ -278,11 +281,39 @@ function GameCharacter() {
             } else if (this.isFalling) {
                 this.y -= this.curJumpingStrength;
                 this.curJumpingStrength -= gravity;
+                for (i = 0; i < platforms[this.curGroundIndex].length; i++) {
+                    // If a character is falling above some platform, memorize it
+                    if (platforms[this.curGroundIndex][i].isBelow(this)) {
+                        this.memorizedPlatform = platforms[this.curGroundIndex][i];
+                    } 
+                    // If a character is below a memorized platform, make them stand on that platform
+                    else if (typeof memorizedPlatform !== 'undefined' &&
+                        this.memorizedPlatform.isAbove(this)) {
+                        this.y = this.memorizedPlatform.y;
+                        this.isFalling = false;
+                        this.curJumpingStrength = 0;
+                        this.isOnPlatform = true;
+                    }
+                }
+                // if a character is below the ground, make them stand on the ground
                 if (this.y >= this.getCurGroundY()) {
                     this.y = this.getCurGroundY();
                     this.isFalling = false;
+                    this.curJumpingStrength = 0;
+                    this.isOnPlatform = false;
                 }
-            } else {
+            } else if (this.isOnPlatform) {
+                // Not plummeting, standing or falling means being on a platform.
+                // Perform checks whether the player is still on the same platform,
+                // and fall them in case they aren't.
+                if (this.x < this.memorizedPlatform.x - this.memorizedPlatform.width
+                    ||
+                    this.x > this.memorizedPlatform.x + this.memorizedPlatform.width
+                    ||
+                    this.curGroundIndex != this.memorizedPlatform.curGroundIndex) {
+                        this.isFalling = true;
+                        this.isOnPlatform = false;
+                    }
             }
         }
         this._checkPlayerDie();
@@ -294,6 +325,7 @@ function GameCharacter() {
             this.y += 3;
         }
     };
+
     this.getCurGroundY = function () {
         return groundPositions[this.curGroundIndex];
     };
@@ -336,7 +368,7 @@ function Platform(curGroundIndex, x, width, y) {
         fill(palette.ground_colors[curGroundIndex]);
         rect(
             this.x - this.width,
-            this.y + height / 100,
+            this.y,
             width * 2,
             height / 100,
         );
@@ -584,6 +616,7 @@ function startGame(level_start) {
         gameChar.isJumping = false;
         gameChar.isLeft = false;
         gameChar.isRight = false;
+        gameChar.isOnPlatform = false;
     }
 }
 function draw() {
@@ -690,7 +723,8 @@ function drawCharTrace() {
 function checkRiver(t_river) {
     if (
         gameChar.x > river.x - river.width / 2 &&
-        gameChar.x < river.x + river.width / 2
+        gameChar.x < river.x + river.width / 2 &&
+        gameChar.y > floorPos_y
     ) {
         gameChar.isPlummeting = true;
     }