6 files changed, 125 insertions, 15 deletions

diff --git a/README.md b/README.md
index e2bf699..79102ec 100644
--- a/README.md
+++ b/README.md
@@ -15,6 +15,17 @@ sounds.
 > download and replace them from official repositories if desired; they have
 > not been tampered with.
 
+## Controller mappings
+
+```
+  Q W E      I O
+  A S D      J k
+```
+
+## Tools
+
+- https://hardwaretester.com/gamepad
+
 ## Libraries
 
 - https://github.com/rxi/microtar
@@ -27,3 +38,4 @@ sounds.
 - https://www.love2d.org/wiki/Main_Page
 - https://www.lexaloffle.com/dl/docs/pico-8_manual.html
 - https://home.cs.colorado.edu/~main/bgi/doc/
+- https://opengameart.org/content/free-rpg-skill-icons-for-crafter-blacksmith-and-gnome
diff --git a/examples/graphics.lua b/examples/graphics.lua
index c6b30a5..6c1f8e4 100644
--- a/examples/graphics.lua
+++ b/examples/graphics.lua
@@ -1,21 +1,59 @@
+asset1 = load_image("examples/icons/armor_3.png")
+
 open_window(800, 800, "Sample Window")
 set_fps(60)
 
-while window_running() do
-        begin_drawing()
-        clear_window(color.BLACK)
-
+function test_api()
         draw_rect(100, 100, 300, 200, color.YELLOW)
-        draw_text("YOOOOO", 10, 10, 20, color.VIOLET)
-
-        draw_text(string.format("fps: %d", get_fps()), 10, 30, 20, color.VIOLET)
-        draw_text(string.format("dt: %.3f", get_dt()), 10, 50, 20, color.VIOLET)
-
+        draw_text("Label text", 10, 10, 20, color.VIOLET)
         draw_line(400, 10, 500, 100, color.RED)
         draw_circle(500, 500, 100, color.BLUE)
         draw_ellipse(200, 500, 100, 50, color.BLUE)
-
         draw_triangle(20, 20, 100, 20, 50, 100, color.BLUE)
+        draw_text(string.format("fps: %d", get_fps()), 10, 30, 20, color.VIOLET)
+        draw_text(string.format("dt: %.3f", get_dt()), 10, 50, 20, color.VIOLET)
+end
+
+function test_buttons()
+        if button_pressed(button.PAD_UP) then
+                draw_text("Pad Up", 10, 10, 20, color.VIOLET)
+        end
+
+        if button_pressed(button.PAD_DOWN) then
+                draw_text("Pad Down", 10, 40, 20, color.VIOLET)
+        end
+
+        if button_pressed(button.PAD_LEFT) then
+                draw_text("Pad Left", 10, 70, 20, color.VIOLET)
+        end
+
+        if button_pressed(button.PAD_RIGHT) then
+                draw_text("Pad Right", 10, 100, 20, color.VIOLET)
+        end
+        
+        if button_pressed(button.A) then
+                draw_text("A", 150, 10, 20, color.VIOLET)
+        end
+
+        if button_pressed(button.B) then
+                draw_text("B", 150, 40, 20, color.VIOLET)
+        end
+
+        if button_pressed(button.X) then
+                draw_text("X", 150, 70, 20, color.VIOLET)
+        end
+
+        if button_pressed(button.Y) then
+                draw_text("Y", 150, 100, 20, color.VIOLET)
+        end
+end
+
+while window_running() do
+        begin_drawing()
+        clear_window(color.BLACK)
+
+        -- test_api()
+        test_buttons()
 
         draw_info()
         end_drawing()
diff --git a/examples/icons/icon_1.png b/examples/icons/icon_1.png
new file mode 100644
index 0000000..4785224
--- /dev/null
+++ b/examples/icons/icon_1.png
diff --git a/examples/icons/icon_2.png b/examples/icons/icon_2.png
new file mode 100644
index 0000000..c19d642
--- /dev/null
+++ b/examples/icons/icon_2.png
diff --git a/main.c b/main.c
index a57280f..67f3520 100644
--- a/main.c
+++ b/main.c
@@ -2,6 +2,7 @@
 #include <stdarg.h>
 #include <getopt.h>
 #include <stdlib.h>
+#include <time.h>
 
 #include "raylib.h"
 #include "lua.h"
@@ -10,6 +11,7 @@
 
 #include "stdlib/json.h"
 #include "stdlib/color.h"
+#include "stdlib/button.h"
 #include "stdlib/tilemap.h"
 
 #include "fonts/dejavusans_mono_bold.h"
@@ -17,15 +19,35 @@
 #define VERSION "x.x"
 #define DEBUG_LEVEL LOG_DEBUG
 #define FONT_IMPORT_SIZE 30
+#define UID_LENGTH 36
+
+typedef struct {
+        char uid[UID_LENGTH + 1];
+        const char* filepath;
+} ExternalImage;
+
+typedef struct {
+} ExternalAudio;
 
 typedef struct {
         Font font;
         int font_size;
+        Camera2D camera;
+        ExternalImage *images;
+        ExternalAudio *audio;
 } Context;
 
 // Setting up global context.
 Context ctx = {0};
 
+static void generate_uid(char *uid) {
+        const char *chars = "0123456789abcdef";
+        for (size_t i = 0; i < UID_LENGTH; i++) {
+                uid[i] = chars[rand() % 16];
+        }
+        uid[UID_LENGTH + 1] = '\0';
+}
+
 static int lua_getfield_int(lua_State *L, int index, const char *key) {
         lua_getfield(L, index, key);
         int val = (int)luaL_checknumber(L, -1);
@@ -249,6 +271,24 @@ static int l_draw_triangle(lua_State *L) {
         return 0;
 }
 
+static int l_button_pressed(lua_State *L) {
+        int button = luaL_checknumber(L, 1);
+        lua_pushboolean(L, IsKeyDown(button));
+        return 1;
+}
+
+static int l_load_image(lua_State *L) {
+        return 0;
+}
+
+static int l_load_audio(lua_State *L) {
+        return 0;
+}
+
+static int l_move_camera(lua_State *L) {
+        return 0;
+}
+
 static void help(const char *argv0) {
         printf("Usage: %s [options]\n"
                         "\nAvailable options:\n"
@@ -265,6 +305,8 @@ static void version(const char *argv0) {
 }
 
 int main(int argc, char *argv[]) {
+        srand(time(NULL));
+
         TraceLogLevel debug_level = LOG_WARNING;
         const char *run_file = NULL;
 
@@ -308,6 +350,12 @@ int main(int argc, char *argv[]) {
                 lua_State *L = luaL_newstate();
                 luaL_openlibs(L);
 
+                // Loading embeded modules into Lua state.
+                if (!load_embedded_module(L, json, json_len, "json")) return 1;
+                if (!load_embedded_module(L, color, color_len, "color")) return 1;
+                if (!load_embedded_module(L, button, button_len, "button")) return 1;
+                if (!load_embedded_module(L, tilemap, tilemap_len, "tilemap")) return 1;
+
                 // Registring Raylib mappings.
                 lua_register(L, "open_window", l_open_window);
                 lua_register(L, "close_window", l_close_window);
@@ -326,11 +374,10 @@ int main(int argc, char *argv[]) {
                 lua_register(L, "draw_circle", l_draw_circle);
                 lua_register(L, "draw_ellipse", l_draw_ellipse);
                 lua_register(L, "draw_triangle", l_draw_triangle);
-
-                // Loading embeded modules into Lua state.
-                if (!load_embedded_module(L, json, json_len, "json")) return 1;
-                if (!load_embedded_module(L, color, color_len, "color")) return 1;
-                if (!load_embedded_module(L, tilemap, tilemap_len, "tilemap")) return 1;
+                lua_register(L, "load_image", l_load_image);
+                lua_register(L, "load_audio", l_load_audio);
+                lua_register(L, "move_camera", l_move_camera);
+                lua_register(L, "button_pressed", l_button_pressed);
 
                 // Interpreting and running input file Lua script.
                 if (luaL_loadfile(L, run_file) || lua_pcall(L, 0, 0, 0)) {
diff --git a/stdlib/button.lua b/stdlib/button.lua
new file mode 100644
index 0000000..7a656e0
--- /dev/null
+++ b/stdlib/button.lua
@@ -0,0 +1,13 @@
+local button = {}
+
+button.PAD_UP    = 87  -- Key: W
+button.PAD_DOWN  = 83  -- Key: S
+button.PAD_LEFT  = 65  -- Key: A
+button.PAD_RIGHT = 68  -- Key: D
+
+button.A         = 76  -- Key: L
+button.B         = 80  -- Key: P
+button.X         = 75  -- Key: K
+button.Y         = 79  -- Key: O
+
+return button