From 963fae202108acd0498349e872e4811fa6c6aba0 Mon Sep 17 00:00:00 2001
From: Nic Gaffney <gaffney_nic@protonmail.com>
Date: Wed, 12 Jun 2024 21:15:52 -0500
Subject: Added imgui for configuration

---
 src/main.zig | 34 +++++++++++++++++++++++++---------
 1 file changed, 25 insertions(+), 9 deletions(-)

(limited to 'src/main.zig')

diff --git a/src/main.zig b/src/main.zig
index 47906e2..7d859fc 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -1,33 +1,49 @@
 const std = @import("std");
 const rl = @import("raylib");
+const z = @import("zgui");
 const part = @import("particle.zig");
 const cfg = @import("config.zig");
+const img = @import("imgui.zig");
+
+const c = @cImport({
+    @cDefine("NO_FONT_AWESOME", "1");
+    @cInclude("rlImGui.h");
+});
 
 pub fn main() !void {
-    const rules = part.ruleMatrix();
-    part.printRules(rules);
+    cfg.rules = part.ruleMatrix();
+    part.printRules(cfg.rules);
+
+    var gpa = std.heap.GeneralPurposeAllocator(.{}){};
+    defer _ = gpa.deinit();
 
     rl.initWindow(cfg.screenWidth, cfg.screenHeight, "Particle Simulator");
     defer rl.closeWindow();
 
     rl.setTargetFPS(60);
 
-    var gpa = std.heap.GeneralPurposeAllocator(.{}){};
-    defer _ = gpa.deinit();
+    c.rlImGuiSetup(true);
+    defer c.rlImGuiShutdown();
+
+    z.initNoContext(gpa.allocator());
+    defer z.deinitNoContext();
+    const imgui_width: f32 = cfg.screenWidth / 2;
+    const imgui_height: f32 = cfg.screenHeight / 3;
+    z.setNextWindowPos(.{ .x = 0, .y = 0 });
+    z.setNextWindowSize(.{ .w = imgui_width, .h = imgui_height });
 
     var particles = try part.initParticles(gpa.allocator(), cfg.initialParticles);
     defer particles.deinit(gpa.allocator());
 
     while (!rl.windowShouldClose()) {
         rl.beginDrawing();
-        if (rl.isKeyPressed(rl.KeyboardKey.key_q)) break;
-
         defer rl.endDrawing();
+        if (rl.isKeyPressed(rl.KeyboardKey.key_q)) break;
+        rl.clearBackground(rl.Color.black);
 
-        part.updateVelocities(particles, rules);
+        part.updateVelocities(particles, cfg.rules);
         part.updatePosition(particles);
         part.draw(particles);
-
-        rl.clearBackground(rl.Color.black);
+        try img.update();
     }
 }
-- 
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