areas implementation

src/areas.zig

@@ -0,0 +1,38 @@
+const std = @import("std");
+const rl = @import("raylib");
+const spawn_area = @import("spawn-area.zig");
+const structures = @import("structures.zig");
+
+const Areas = struct {
+    areas: []spawn_area.SpawnArea,
+    allocator: std.mem.Allocator,
+
+    pub fn init(allocator: std.mem.Allocator, size: usize) !Areas {
+        const values = std.enums.values(structures.AreaLocation);
+        if (size > values.len) size = values.len;
+
+        var used_areas = std.ArrayList(structures.AreaLocation).init(allocator);
+        defer used_areas.deinit();
+
+        // here we generate size random AreaLocation enums that aren't in used_areas
+        // the random generator will only generate AreaLocation enums that are not in
+        //
+        // todo implement function which will subtract values from used_areas (after RANDOM)
+        // based on this we will fill data with 0..size data and return the final value
+
+        const data = try allocator.alloc(structures.AreaLocation, size);
+        // todo data must be set before returned
+        return Areas{
+            .areas = data,
+        };
+    }
+
+    pub fn deinit(self: *Areas) void {
+        self.allocator.free(self.areas);
+    }
+
+    pub fn draw(areas: *Areas) void {
+        // todo implement draw
+        _ = areas;
+    }
+};

src/globals.zig

@@ -1,13 +1,21 @@
 const rl = @import("raylib");
 
-pub var screen_width = 1920;
-pub var screen_height = 1080;
+var screen_width: i32 = 1920;
+var screen_height: i32 = 1080;
 
-fn setWindowSize(new_width: usize, new_height: usize) void {
+pub fn getScreenWidth() i32 {
+    return screen_width;
+}
+
+pub fn getScreenHeihgt() i32 {
+    return screen_height;
+}
+
+pub fn setWindowSize(new_width: i32, new_height: i32) void {
     screen_width = new_width;
     screen_height = new_height;
 }
 
-fn checkWindowSizeChanged(new_width: usize, new_height: usize) bool {
+pub fn checkWindowSizeChanged(new_width: i32, new_height: i32) bool {
     return screen_width != new_width or screen_height != new_height;
 }

src/main.zig

@@ -1,26 +1,40 @@
 const std = @import("std");
 const rl = @import("raylib");
+const globals = @import("globals.zig");
+const areas = @import("areas.zig");
 
 pub fn main() !void {
-    const size = .{ 1920, 1080 };
+    var gpa = std.heap.GeneralPurposeAllocator(.{}){};
+    defer _ = gpa.deinit();
+    const allocator = gpa.allocator();
 
     rl.setConfigFlags(.{
         .msaa_4x_hint = true,
         .window_resizable = true,
-        .window_maximized = true,
     });
 
-    rl.initWindow(size[0], size[1], "Promet SIM");
+    rl.initWindow(globals.getScreenWidth, globals.getScreenHeihgt, "Promet SIM");
     defer rl.closeWindow();
 
     rl.maximizeWindow();
-
     rl.setTargetFPS(60);
 
+    var spAreas = try areas.Areas.init(allocator, 3);
+    defer spAreas.deinit();
+
     while (!rl.windowShouldClose()) {
         rl.beginDrawing();
         defer rl.endDrawing();
 
+        const new_width = rl.getScreenWidth();
+        const new_height = rl.getScreenHeight();
+
+        if (globals.checkWindowSizeChanged(new_width, new_height)) {
+            globals.setWindowSize(new_width, new_height);
+        }
+
         rl.clearBackground(.light_gray);
+
+        // draw areas
     }
 }

src/spawn-area.zig

@@ -1,18 +1,12 @@
 const rl = @import("raylib");
+const structures = @import("structures.zig");
 
-const AreaLocation = enum {
-    TopLeft,
-    TopRight,
-    BottomLeft,
-    BottomRihgt,
-};
-
-const SpawnArea = struct {
+pub const SpawnArea = struct {
     location: rl.Vector2,
     // cars
     size: .{ i32, i32 },
 
-    pub fn init(loc: AreaLocation) SpawnArea {
+    pub fn init(loc: structures.AreaLocation) SpawnArea {
         return SpawnArea{ .location = loc, .size = .{ undefined, undefined } };
     }
 };

src/structures.zig

@@ -0,0 +1,6 @@
+const AreaLocation = enum {
+    TopLeft,
+    TopRight,
+    BottomLeft,
+    BottomRihgt,
+};