forming the skeleton

src/input.cpp

@@ -0,0 +1,54 @@
+#include "input.h"
+
+static void _mouse_tick(Mouse* self);
+
+static void
+_mouse_tick(Mouse* self)
+{
+    s32 state;
+    SDL_Event event;
+
+    memcpy(&self->previous, &self->current, sizeof(bool) * MOUSE_COUNT);
+    memset(&self->current, '\0', sizeof(bool) * MOUSE_COUNT);
+
+    state = SDL_GetMouseState(NULL, NULL);
+
+    if (state & SDL_BUTTON_LMASK != 0)
+    {
+        self->current[MOUSE_LEFT] = true;
+    }
+
+    if (state & SDL_BUTTON_RMASK != 0)
+    {
+        self->current[MOUSE_RIGHT] = true;
+    }
+
+	SDL_GetMouseState(&self->position.x, &self->position.y);
+
+    self->delta = self->position - self->oldPosition;
+    self->oldPosition = self->position;
+}
+
+bool
+mouse_press(Mouse* self, MouseType type)
+{
+    return (self->current[type] && !self->previous[type]);
+}
+
+bool
+mouse_held(Mouse* self, MouseType type)
+{
+    return (self->current[type] && self->previous[type]);
+}
+
+bool
+mouse_release(Mouse* self, MouseType type)
+{
+    return (!self->current[type] && self->previous[type]);
+}
+
+void
+input_tick(Input* self)
+{
+    _mouse_tick(&self->mouse);
+}