From e09caf3cf41ac3e3ea7ec252a21a7ac5b7fbb52c Mon Sep 17 00:00:00 2001
From: iamcheeseman <dev@iamcheeseman.net>
Date: Fri, 13 Mar 2026 19:42:48 -0400
Subject: Side scrolling controller

---
 src/init.lua        |  5 +++--
 src/objs/player.lua | 20 +++++++++++++-------
 2 files changed, 16 insertions(+), 9 deletions(-)

(limited to 'src')

diff --git a/src/init.lua b/src/init.lua
index 246147a..18299fd 100644
--- a/src/init.lua
+++ b/src/init.lua
@@ -10,12 +10,13 @@ require "src.room_editor"
 
 SCR_WIDTH = 320
 SCR_HEIGHT = 180
+GRAVITY = 1000
+TERMINAL_VELOCITY = 900
 WindowScale = 1
 
 register_input("Left",  {{"key", "left"},  {"key", "a"}})
 register_input("Right", {{"key", "right"}, {"key", "d"}})
-register_input("Down",  {{"key", "down"},  {"key", "s"}})
-register_input("Up",    {{"key", "up"},    {"key", "w"}})
+register_input("Jump", {{"key", "space"}})
 
 register_input("Right_Click", {{"mouse", 2}})
 register_input("Left_Click",  {{"mouse", 1}})
diff --git a/src/objs/player.lua b/src/objs/player.lua
index 58e5f3a..1d89f8a 100644
--- a/src/objs/player.lua
+++ b/src/objs/player.lua
@@ -1,4 +1,6 @@
 PLAYER_SPEED = 100
+PLAYER_ACCEL = 30
+PLAYER_JUMP_FORCE = 350
 
 register_comp("Body", function (ent, x, y, w, h, opts)
   ent.vx = 0
@@ -15,17 +17,21 @@ function body_sys(ent, dt)
 end
 
 function player_movement_sys(player, dt)
-  local inpx, inpy = input_direction("Left", "Right", "Up", "Down")
-  inpx, inpy = normalize(inpx, inpy)
-  player.vx = dlerp(player.vx, inpx * PLAYER_SPEED, 25 * dt)
-  player.vy = dlerp(player.vy, inpy * PLAYER_SPEED, 25 * dt)
+  local inputx = bton(is_input_pressed("Right")) - bton(is_input_pressed("Left"))
+
+  player.vx = dlerp(player.vx, inputx * PLAYER_SPEED, PLAYER_ACCEL * dt)
+  player.vy = math.min(player.vy + GRAVITY * dt, TERMINAL_VELOCITY)
+
+  if player.box:touching_down() and is_input_just_pressed("Jump") then
+    player.vy = -PLAYER_JUMP_FORCE
+  end
 end
 
 function new_player(x, y)
   local ent = new_entity()
-  add_comp(ent, "Body", x, y, 16, 16, {
-    offsetx = -8,
-    offsety = -8,
+  add_comp(ent, "Body", x, y, 8, 14, {
+    offsetx = -4,
+    offsety = -6,
     layers = {},
     mask = {"hard"},
   })
-- 
cgit v1.3-2-g0d8e