From 2e463dff8ccb0e2431a255b8623fab9cb455ce61 Mon Sep 17 00:00:00 2001
From: Arslaan Pathan <xminecrafterfun@gmail.com>
Date: Sun, 15 Jun 2025 09:23:23 +1200
Subject: Add jump stuff and gravity!

---
 assets/scripts/local2P.lua | 66 +++++++++++++++++++++++++++++++++++-----------
 1 file changed, 50 insertions(+), 16 deletions(-)

(limited to 'assets/scripts/local2P.lua')

diff --git a/assets/scripts/local2P.lua b/assets/scripts/local2P.lua
index df20f61..c8e0aa5 100644
--- a/assets/scripts/local2P.lua
+++ b/assets/scripts/local2P.lua
@@ -1,10 +1,24 @@
 ---@diagnostic disable: undefined-global
 
-jumpMultiplier = 7
+
+function SafeInitCharacter(character, default_x, default_y)
+    character.x = character.x or default_x
+    character.y = character.y or default_y
+    character.y_velocity = character.y_velocity or 1
+    character.current_sprite = character.asset_dir .. "/sprites/idle.png"
+end
+
+function Setup()
+    SafeInitCharacter(player1Character, 250, 250)
+    SafeInitCharacter(player2Character, WIDTH - 250 - (250 / 2), 250)
+end
+
+gravity = 1.2 -- POSITIVE gravity
+floor_y = HEIGHT - 250
 
 function HandleP1Input()
-    if Input.isKeyPressedOnce("W") then
-        player1Character.y = player1Character.y - player1Character.speed * jumpMultiplier;
+    if Input.isKeyPressedOnce("W") and player1Character.y == floor_y then
+       player1Character.y_velocity = player1Character.jump_strength * -1.0;
     end
     if Input.isKeyDown("D") then
         player1Character.x = player1Character.x + player1Character.speed;
@@ -15,8 +29,8 @@ function HandleP1Input()
 end
 
 function HandleP2Input()
-    if Input.isKeyPressedOnce("UP") then
-        player2Character.y = player2Character.y - player2Character.speed * jumpMultiplier;
+    if Input.isKeyPressedOnce("UP") and player2Character.y == floor_y then
+        player2Character.y_velocity = player2Character.jump_strength * -1.0;
     end
     if Input.isKeyDown("RIGHT") then
         player2Character.x = player2Character.x + player2Character.speed;
@@ -26,20 +40,40 @@ function HandleP2Input()
     end
 end
 
-function Setup()
-    player1Character.x = 250;
-    player2Character.x = WIDTH - 250 - (250 / 2)
-    player1Character.y = 250;
-    player2Character.y = 250;
+function Update()
+    -- P1 physics
+    player1Character.y_velocity = player1Character.y_velocity + gravity
+    player1Character.y = player1Character.y + player1Character.y_velocity
 
-    player1Character.current_sprite = player1Character.asset_dir .. "/sprites/idle.png"
-    player2Character.current_sprite = player2Character.asset_dir .. "/sprites/idle.png"
-end
+    if player1Character.y > floor_y then
+        player1Character.y = floor_y
+        player1Character.y_velocity = 0
+    end
+
+    -- P2 physics
+    player2Character.y_velocity = player2Character.y_velocity + gravity
+    player2Character.y = player2Character.y + player2Character.y_velocity
+
+    if player2Character.y > floor_y then
+        player2Character.y = floor_y
+        player2Character.y_velocity = 0
+    end
+
+    -- Render
+    queueTextureForRender(
+        player1Character.current_sprite,
+        math.floor(player1Character.x),
+        math.floor(player1Character.y)
+    )
+
+    queueTextureForRender(
+        player2Character.current_sprite,
+        math.floor(player2Character.x),
+        math.floor(player2Character.y)
+    )
 
-function Update()
-    queueTextureForRender(player1Character.current_sprite, player1Character.x, player1Character.y)
-    queueTextureForRender(player2Character.current_sprite, player2Character.x, player2Character.y)
 
+    -- Input
     HandleP1Input()
     HandleP2Input()
 end
-- 
cgit v1.2.3