Add project source code

8 files changed, 274 insertions, 0 deletions

diff --git a/src/pad/CMakeLists.txt b/src/pad/CMakeLists.txt
new file mode 100644
index 0000000..4862c2b
--- /dev/null
+++ b/src/pad/CMakeLists.txt
@@ -0,0 +1,10 @@
+add_library(pad "src/pad.c")
+target_include_directories(pad PUBLIC "inc" PRIVATE "privinc")
+
+if(PS1_BUILD)
+    target_include_directories(pad PUBLIC "ps1/inc")
+    target_sources(pad PRIVATE "ps1/src/pad.c")
+elseif(SDL1_2_BUILD)
+    target_include_directories(pad PUBLIC "sdl-1.2/inc")
+    target_sources(pad PRIVATE "sdl-1.2/src/pad.c")
+endif()
diff --git a/src/pad/inc/pad.h b/src/pad/inc/pad.h
new file mode 100644
index 0000000..2579c84
--- /dev/null
+++ b/src/pad/inc/pad.h
@@ -0,0 +1,49 @@
+#ifndef PAD_H
+#define PAD_H
+
+#include <pad/port.h>
+#include <stdbool.h>
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#define PAD_KEYS \
+    X(PAD_KEY_LEFT) \
+    X(PAD_KEY_RIGHT) \
+    X(PAD_KEY_UP) \
+    X(PAD_KEY_DOWN) \
+    X(PAD_KEY_A) \
+    X(PAD_KEY_B) \
+    X(PAD_KEY_C) \
+    X(PAD_KEY_D) \
+    X(PAD_KEY_E) \
+    X(PAD_KEY_OPTIONS)
+
+enum pad_key
+{
+#define X(x) x,
+    PAD_KEYS
+#undef X
+};
+
+struct pad
+{
+    int player;
+    int mask, oldmask;
+    struct pad_port port;
+};
+
+void pad_init(int player, struct pad *p);
+void pad_update(struct pad *p);
+bool pad_pressed(const struct pad *p, enum pad_key k);
+bool pad_justpressed(const struct pad *p, enum pad_key k);
+bool pad_released(const struct pad *p, enum pad_key k);
+const char *pad_str(enum pad_key k);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* PAD_H */
diff --git a/src/pad/privinc/pad_private.h b/src/pad/privinc/pad_private.h
new file mode 100644
index 0000000..095c37e
--- /dev/null
+++ b/src/pad/privinc/pad_private.h
@@ -0,0 +1,17 @@
+#ifndef PAD_PRIVATE_H
+#define PAD_PRIVATE_H
+
+#include <pad.h>
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+void pad_port_update(struct pad *p);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* PAD_PRIVATE_H */
diff --git a/src/pad/ps1/inc/pad/port.h b/src/pad/ps1/inc/pad/port.h
new file mode 100644
index 0000000..14dc784
--- /dev/null
+++ b/src/pad/ps1/inc/pad/port.h
@@ -0,0 +1,20 @@
+#ifndef PAD_PS1_H
+#define PAD_PS1_H
+
+#include <psx.h>
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+struct pad_port
+{
+    psx_pad_state pps;
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* PAD_PS1_H */
diff --git a/src/pad/ps1/src/pad.c b/src/pad/ps1/src/pad.c
new file mode 100644
index 0000000..eea56ed
--- /dev/null
+++ b/src/pad/ps1/src/pad.c
@@ -0,0 +1,41 @@
+#include <pad.h>
+#include <pad_private.h>
+#include <pad/port.h>
+#include <stddef.h>
+#include <string.h>
+
+void pad_init(const int player, struct pad *const p)
+{
+    memset(p, 0, sizeof *p);
+    p->player = player;
+}
+
+void pad_port_update(struct pad *const p)
+{
+    static const int psx_keys[] =
+    {
+        [PAD_KEY_LEFT] = PAD_LEFT,
+        [PAD_KEY_RIGHT] = PAD_RIGHT,
+        [PAD_KEY_UP] = PAD_UP,
+        [PAD_KEY_DOWN] = PAD_DOWN,
+        [PAD_KEY_A] = PAD_CROSS,
+        [PAD_KEY_B] = PAD_CIRCLE,
+        [PAD_KEY_C] = PAD_TRIANGLE,
+        [PAD_KEY_D] = PAD_SQUARE,
+        [PAD_KEY_E] = PAD_L1,
+        [PAD_KEY_OPTIONS] = PAD_START
+    };
+
+    p->mask = 0;
+    PSX_PollPad(p->player, &p->port.pps);
+
+    for (size_t i = 0; i < sizeof psx_keys / sizeof *psx_keys; i++)
+    {
+        const int mask = 1 << i;
+
+        if (p->port.pps.buttons & psx_keys[i])
+            p->mask |= mask;
+        else
+            p->mask &= ~mask;
+    }
+}
diff --git a/src/pad/sdl-1.2/inc/pad/port.h b/src/pad/sdl-1.2/inc/pad/port.h
new file mode 100644
index 0000000..b6ae85a
--- /dev/null
+++ b/src/pad/sdl-1.2/inc/pad/port.h
@@ -0,0 +1,20 @@
+#ifndef PAD_SDL_1_2_H
+#define PAD_SDL_1_2_H
+
+#include <stdbool.h>
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+struct pad_port
+{
+    bool exit;
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* PAD_SDL_1_2_H */
diff --git a/src/pad/sdl-1.2/src/pad.c b/src/pad/sdl-1.2/src/pad.c
new file mode 100644
index 0000000..a062758
--- /dev/null
+++ b/src/pad/sdl-1.2/src/pad.c
@@ -0,0 +1,80 @@
+#include <pad.h>
+#include <SDL/SDL.h>
+#include <stdio.h>
+
+static void key_event(const SDL_KeyboardEvent *const key, struct pad *const p)
+{
+    static const int keys[] =
+    {
+        [PAD_KEY_LEFT] = SDLK_LEFT,
+        [PAD_KEY_RIGHT] = SDLK_RIGHT,
+        [PAD_KEY_UP] = SDLK_UP,
+        [PAD_KEY_DOWN] = SDLK_DOWN,
+        [PAD_KEY_A] = SDLK_x,
+        [PAD_KEY_B] = SDLK_d,
+        [PAD_KEY_C] = SDLK_w,
+        [PAD_KEY_D] = SDLK_a,
+        [PAD_KEY_E] = SDLK_q,
+        [PAD_KEY_OPTIONS] = SDLK_ESCAPE
+    };
+
+    for (size_t i = 0; i < sizeof keys / sizeof *keys; i++)
+    {
+        const SDLKey k = key->keysym.sym;
+
+        if (k == keys[i])
+        {
+            const int mask = 1 << i;
+
+            if (key->type == SDL_KEYDOWN)
+            {
+                printf("%s pressed\n", pad_str(i));
+                p->mask |= mask;
+            }
+            else
+            {
+                printf("%s released\n", pad_str(i));
+                p->mask &= ~mask;
+            }
+        }
+    }
+}
+
+void pad_port_update(struct pad *const p)
+{
+    SDL_Event ev;
+    static const int masks[] = {SDL_KEYEVENTMASK};
+    int n;
+
+    while ((n = SDL_PeepEvents(&ev, 1, SDL_GETEVENT,
+                masks[p->player] | SDL_QUITMASK)) > 0)
+    {
+        switch (ev.type)
+        {
+            case SDL_KEYDOWN:
+                /* Fall through. */
+            case SDL_KEYUP:
+                key_event(&ev.key, p);
+                break;
+
+            case SDL_QUIT:
+                p->port.exit = true;
+                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 pad_init(const int player, struct pad *const p)
+{
+}
diff --git a/src/pad/src/pad.c b/src/pad/src/pad.c
new file mode 100644
index 0000000..b95a43e
--- /dev/null
+++ b/src/pad/src/pad.c
@@ -0,0 +1,37 @@
+#include <pad.h>
+#include <pad_private.h>
+#include <pad/port.h>
+#include <stdbool.h>
+
+bool pad_pressed(const struct pad *const p, const enum pad_key k)
+{
+    return p->mask & (1 << k);
+}
+
+bool pad_justpressed(const struct pad *const p, const enum pad_key k)
+{
+    return p->mask & (1 << k) && !(p->oldmask & (1 << k));
+}
+
+bool pad_released(const struct pad *const p, const enum pad_key k)
+{
+    return !(p->mask & (1 << k)) && p->oldmask & (1 << k);
+}
+
+void pad_update(struct pad *const p)
+{
+    p->oldmask = p->mask;
+    pad_port_update(p);
+}
+
+const char *pad_str(const enum pad_key k)
+{
+    static const char *const s[] =
+    {
+#define X(x) [x] = #x,
+        PAD_KEYS
+#undef X
+    };
+
+    return s[k];
+}