Init

1 files changed, 42 insertions, 0 deletions

diff --git a/src/map.zig b/src/map.zig
new file mode 100644
index 0000000..d9b4496
--- /dev/null
+++ b/src/map.zig
@@ -0,0 +1,42 @@
+const std = @import("std");
+
+// Let's pretend that our units are meters
+pub const MAX_HEIGHT: f32 = 2.5;
+
+pub const Cell = struct {
+    height: f32,
+    wall_texture: u8 = 0,
+    floor_texture: u8 = 0,
+    ceiling_texture: u8 = 0,
+
+    const floor = Cell{ .height = 0 };
+};
+
+pub const Map = struct {
+    width: u32,
+    height: u32,
+    size: f32 = 64,
+    cells: std.ArrayList(Cell),
+
+    pub fn deinit(self: Map) void {
+        self.cells.deinit();
+    }
+
+    pub fn new(width: u32, height: u32, alloc: *std.mem.Allocator) !Map {
+        var cells = std.ArrayList(Cell).init(alloc);
+        try cells.ensureTotalCapacity(width * height);
+        try cells.appendNTimes(Cell.floor, width * height);
+
+        return Map{ .width = width, .height = height, .cells = cells };
+    }
+
+    pub fn inBounds(self: Map, x: i32, y: i32) bool {
+        return (x < self.width and x >= 0 and y < self.height and y >= 0);
+    }
+
+    pub fn lookup(self: Map, x: i32, y: i32) Cell {
+        // live dangerously, no bounds check
+        std.debug.assert(x >= 0 and y >= 0); // compiler hint?
+        return self.cells.items[@intCast(u32, y) * self.width + @intCast(u32, x)];
+    }
+};