zig-raylib/src/main.zig

const std = @import("std");
const rl = @import("raylib");
const rg = @import("raygui");
const pr = @import("primitives.zig");

const Particle = struct{
    const Self = @This();
    position : pr.Vec = .{.a = .{.x=0,.y=0,.z=0}},
    velocity : pr.Vec = .{.a = .{.x=0,.y=0,.z=0}},
    acceleration : pr.Vec = .{.a = .{.x=0,.y=0,.z=0}},
    pub fn new(self:Self)void{
        _ = self;
    }
    pub fn update(self:Self)void{
        self.velocity = self.velocity + self.acceleration;
        self.position = self.position + self.velocity;
    }
};

pub fn main() anyerror!void {
    // Initialization
    //--------------------------------------------------------------------------------------
    const screenWidth = 800;
    const screenHeight = 450;
    const rect2 = rl.Rectangle{ .x = @as(f32, @floatFromInt(10)), .y = @as(f32, @floatFromInt(10)), .width = @as(f32, @floatFromInt(300)), .height = @as(f32, @floatFromInt(100)) };
    var msg_res : i32=-1;
    var state : i32=-1;

    const p1 = Particle{.velocity = .{.a = .{.x = 1,.y = 1}}};

    rl.initWindow(screenWidth, screenHeight, "raylib-zig [core] example - basic window");
    defer rl.closeWindow(); // Close window and OpenGL context

    rl.setTargetFPS(60); // Set our game to run at 60 frames-per-second

    while (!rl.windowShouldClose()) { // Detect window close button or ESC key
        rl.beginDrawing();
        defer rl.endDrawing();

        rl.clearBackground(rl.Color{.r=181,
                                    .g =177,
                                    .b =154,
                                    .a = 255,
        });

        if(state != 0){ 
            msg_res = rg.guiMessageBox(rect2, "Title", "question?", "Nice;Cool");
            if(msg_res > -1){
                state = msg_res;
            }
            rl.clearBackground(rl.Color.white);
            switch(state){
                1 => {
                        rl.drawText("1", 190, 200, 20, rl.Color.red);
                },
                2 => {
                        rl.drawText("2", 190, 200, 20, rl.Color.red);
                },
                    else =>{},
            }
        }
        p1.update();
        rl.drawCircle(p1.position.a.x,p1.position.a.y,40,rl.Color{.r=124,.g=195,.b=217,.a=100});


    }
}

test "simple test" {
    var list = std.ArrayList(i32).init(std.testing.allocator);
    defer list.deinit(); // try commenting this out and see if zig detects the memory leak!
    try list.append(42);
    try std.testing.expectEqual(@as(i32, 42), list.pop());
}