From fccd74f819352665d2ed9dfe1383675eda26d27f Mon Sep 17 00:00:00 2001
From: Kitty-Cricket Piapiac <kitty@piapiac.org>
Date: Fri, 17 May 2024 16:52:48 +0100
Subject: pong

---
 pong.bqn | 68 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100755 pong.bqn

(limited to 'pong.bqn')

diff --git a/pong.bqn b/pong.bqn
new file mode 100755
index 0000000..80e5d0d
--- /dev/null
+++ b/pong.bqn
@@ -0,0 +1,68 @@
+#!/usr/bin/env bqn
+# TODO: score, bugfixes
+⟨c⇐color⋄d⇐draw⋄k⇐key⋄win⇐window⟩ ← r ← •Import "./rayed-bqn/rayed.bqn"
+MT ← •MonoTime
+Collide ← {[a1⋄a2]𝕊[b1⋄b2]:¬∨´(a1∾b1)>(b2∾a2)}
+
+Paddle ← {up‿down𝕊x: # pos‿bbox
+  init ⇐ 0.5‿@
+  Draw ⇐ {𝕊·‿bbox:c.white d.Rectangle bbox}
+  Update ⇐ {ws‿dt𝕊pos‿bbox:
+    cu‿cd ← ⟨∧´⥊bbox>0⋄∧´⥊bbox<1⊑ws⟩
+    u‿d ← ⟨cu×k.IsDown up⋄cd×k.IsDown down⟩
+    ⟨np←pos+dt×d-u⋄⍉⌊ws×x‿np+0.015≍○(¯1‿1⊸×)0.1⟩
+  }
+}
+c1 ← k.w  ‿k.s    Paddle 0.1
+c2 ← k.up ‿k.down Paddle 0.9
+
+ball ← { # pos‿vel‿bbox
+  init ⇐ ⟨0.5‿0.5⋄1‿1⋄@⟩
+  Draw ⇐ {𝕊·‿·‿bbox:c.white d.Ellipse bbox}
+  Update ⇐ {ws‿dt‿p1‿p2𝕊pos‿vel‿bbox:
+    nb ← ¯16‿16+2‿2⥊ws×np ← pos+4÷˜dt×vx‿vy ← vel
+    ceil‿floor ← -⟜¬∘(∧´⥊)¨((0⊸<)⋈(1⊑ws)⊸>) nb
+    cp1‿cp2 ← -⟜¬∘Collide⟜nb∘(1⊸⊑)¨p1‿p2
+    np‿⟨vx×cp1×cp2⋄vy×floor×ceil⟩‿nb
+  }
+}
+
+world ← {
+  init ⇐ c1.init‿c2.init‿ball.init
+  Update ⇐ {ws‿dt𝕊p1‿p2‿b: ⟨
+    np1 ← 𝕨 c1.Update p1
+    np2 ← 𝕨 c2.Update p2
+    ws‿dt‿np1‿np2 ball.Update b
+  ⟩}
+  Draw ⇐ {wx‿wy𝕊p1‿p2‿b:
+    c.red‿c.red‿c.white d.Line¨ (∾˘⟜(0≍wy))∘(wx⊸×)¨ 0.1‿0.9‿0.5
+    c1.Draw p1⋄c2.Draw p2⋄ball.Draw b
+  }
+}
+
+Consts ← {𝕊:
+  font ⇐ r.font.LoadBQN@
+  Text ⇐ {c.white‿font‿𝕨 d.Text 𝕩}
+}
+Ticks ← {𝕨𝕊size‿debug‿time‿dt: ⟨
+  ⊢◶size‿win.GetSize r.raylib.IsWindowResized⟨⟩
+  debug≠'d'=𝕨 ⋄ nt ← MT@ ⋄ nt - time
+⟩}
+Start ← {𝕊:⟨0⋄'d'Ticks(win.GetSize@)‿0‿(MT@)‿0.0016⋄world.init⟩}
+Frame ← {q𝕊state‿tick‿w:
+  size‿debug‿time‿dt ← ntick ← tick Ticks˜ kp ← k.PressedChar@
+  ((16⊸q.Text)¨∘(⋈˜¨⟜(10⊸∾¨(16⊸×(1⊸+↕∘≠)))))⍟debug⟨
+    "FPS"∾˜•Repr win.GetFPS@
+    "Time: "∾•Repr time
+    "Delta Time: "∾•Repr dt
+  ⟩
+  ⊢◶{𝕊:
+    64‿32 q.Text¨⥊⋈˘⍉[64‿64⋈64‿128⋄"PONG"‿"press x to start"]
+    ntick‿w∾˜'x'=kp
+  }‿{𝕊:
+    size world.Draw nw ← size‿dt world.Update w
+    1‿ntick‿nw
+  } state
+} d._withCanvas_ c.black
+
+(Consts Frame•_While_(¬win.ShouldClose)Start)win._openAs "gametest"
-- 
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