Added timers to the game

2025-01-06 09:21:35 -07:00
parent 52097b3861
commit 41a208846a
4 changed files with 100 additions and 15 deletions
@@ -0,0 +1,56 @@
+const sdl = @import("./../sdl.zig").c;
+
+pub const TimerStatus = enum { started, stopped, paused };
+
+pub const Timer = struct {
+    start_ticks_ms: u32 = 0,
+    pause_ticks_ms: u32 = 0,
+    status: TimerStatus = TimerStatus.stopped,
+
+    pub fn start(self: *Timer) void {
+        if (self.status == .started) return;
+        self.status = .started;
+        self.start_ticks_ms = sdl.SDL_GetTicks();
+        self.pause_ticks_ms = 0;
+    }
+
+    pub fn stop(self: *Timer) void {
+        if (self.status == .stopped) return;
+        self.status = .stopped;
+        self.start_ticks_ms = 0;
+        self.pause_ticks_ms = 0;
+    }
+
+    pub fn reset(self: *Timer) void {
+        self.status = .started;
+        self.start_ticks_ms = sdl.SDL_GetTicks();
+        self.pause_ticks_ms = 0;
+    }
+
+    pub fn pause(self: *Timer) void {
+        if (self.status == .paused or self.status == .stopped) return;
+        self.status = .paused;
+        self.pause_ticks_ms = sdl.SDL_GetTicks();
+    }
+
+    pub fn unpause(self: *Timer) void {
+        if (self.status == .started or self.status == .stopped) return;
+        self.status = .started;
+        self.start_ticks_ms = sdl.SDL_GetTicks() - self.pause_ticks_ms;
+        self.pause_ticks_ms = 0;
+    }
+
+    pub fn getTicks(self: *Timer) u32 {
+        switch (self.status) {
+            .stopped => {
+                return 0;
+            },
+            .paused => {
+                return self.pause_ticks_ms;
+            },
+            .started => {
+                return sdl.SDL_GetTicks() - self.start_ticks_ms;
+            },
+        }
+    }
+};