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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 rules = @import("rules.zig");
const c = @cImport({
@cDefine("NO_FONT_AWESOME", "1");
@cInclude("rlImGui.h");
});
pub fn main() !void {
cfg.rules = rules.ruleMatrix();
rules.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);
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());
const buf = try gpa.allocator().allocSentinel(u8, 128, 0);
std.mem.copyForwards(u8, buf, "Absolute File Path" ++ .{0});
defer gpa.allocator().free(buf);
while (!rl.windowShouldClose()) {
if (particles.items(.x).len < cfg.particleCount) {
for (0..@intCast(cfg.particleCount - @as(i32, @intCast(particles.items(.x).len)))) |_| {
try particles.append(gpa.allocator(), part.createParticle());
}
}
if (particles.items(.x).len > cfg.particleCount) {
particles.shrinkRetainingCapacity(@intCast(cfg.particleCount));
}
rl.beginDrawing();
defer rl.endDrawing();
if (rl.isKeyPressed(rl.KeyboardKey.key_q)) break;
rl.clearBackground(rl.Color.black);
part.updateVelocities(particles, cfg.rules);
part.updatePosition(particles);
part.draw(particles);
try img.update(gpa.allocator(), buf);
}
}
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