Add support for keyboard and mouse

1 files changed, 80 insertions, 0 deletions

diff --git a/src/mouse/sdl-1.2/src/mouse.c b/src/mouse/sdl-1.2/src/mouse.c
new file mode 100644
index 0000000..381ac0e
--- /dev/null
+++ b/src/mouse/sdl-1.2/src/mouse.c
@@ -0,0 +1,80 @@
+#include <mouse.h>
+#include <SDL/SDL.h>
+#include <stdint.h>
+#include <inttypes.h>
+#include <stdio.h>
+#include <string.h>
+
+static void mouse_click(const SDL_MouseButtonEvent *const ev,
+    struct mouse *const m)
+{
+    int mask;
+
+    switch (ev->button)
+    {
+        case 1:
+            mask = 1 << MOUSE_BUTTON_LEFT;
+            break;
+
+        case 3:
+            mask = 1 << MOUSE_BUTTON_RIGHT;
+            break;
+
+        default:
+            return;
+    }
+
+    if (ev->state == SDL_PRESSED)
+        m->mask |= mask;
+    else
+        m->mask &= ~mask;
+}
+
+static void mouse_event(const SDL_MouseMotionEvent *const ev,
+    struct mouse *const m)
+{
+    m->x = ev->x;
+    m->y = ev->y;
+}
+
+void mouse_update(struct mouse *const m)
+{
+    SDL_Event ev;
+    int n;
+
+    m->oldmask = m->mask;
+
+    while ((n = SDL_PeepEvents(&ev, 1, SDL_GETEVENT, SDL_MOUSEMOTIONMASK
+        | SDL_MOUSEBUTTONDOWNMASK | SDL_MOUSEBUTTONUPMASK)) > 0)
+    {
+        switch (ev.type)
+        {
+            case SDL_MOUSEBUTTONDOWN:
+                /* Fall through. */
+            case SDL_MOUSEBUTTONUP:
+                mouse_click(&ev.button, m);
+                break;
+
+            case SDL_MOUSEMOTION:
+                mouse_event(&ev.motion, m);
+                break;
+
+            default:
+                fprintf(stderr, "%s: unexpected SDL_Event %d\n",
+                    __func__, ev.type);
+                break;
+        }
+    }
+
+    if (n < 0)
+    {
+        fprintf(stderr, "%s: SDL_PeepEvents: %s\n",
+            __func__, SDL_GetError());
+        return;
+    }
+}
+
+void mouse_init(struct mouse *const m)
+{
+    memset(m, 0, sizeof *m);
+}