Added a bunch of new drawing functions

Author Mitja Felicijan <mitja.felicijan@gmail.com> 2025-08-08 03:03:09 +0200
Committer Mitja Felicijan <mitja.felicijan@gmail.com> 2025-08-08 03:03:09 +0200
Commit 976e810d7d3eaa9e6c0a7b0d865ea6cb2e94e02a (patch)
-rw-r--r-- examples/graphics.lua 9
-rw-r--r-- main.c 108
2 files changed, 111 insertions, 6 deletions
diff --git a/examples/graphics.lua b/examples/graphics.lua
...
8 
	draw_rect(100, 100, 300, 200, color.YELLOW)
 8 
	draw_rect(100, 100, 300, 200, color.YELLOW)
9 
	draw_text("YOOOOO", 10, 10, 20, color.VIOLET)
 9 
	draw_text("YOOOOO", 10, 10, 20, color.VIOLET)
10 
  
 10 
  
 
  
 11 
	draw_text(string.format("fps: %d", get_fps()), 10, 30, 20, color.VIOLET)
 
  
 12 
	draw_text(string.format("dt: %.3f", get_dt()), 10, 50, 20, color.VIOLET)
 
  
 13 
  
 
  
 14 
	draw_line(400, 10, 500, 100, color.RED)
 
  
 15 
	draw_circle(500, 500, 100, color.BLUE)
 
  
 16 
	draw_ellipse(200, 500, 100, 50, color.BLUE)
 
  
 17 
  
 
  
 18 
	draw_triangle(20, 20, 100, 20, 50, 100, color.BLUE)
 
  
 19 
  
11 
	draw_info()
 20 
	draw_info()
12 
	end_drawing()
 21 
	end_drawing()
13 
end
 22 
end
...
diff --git a/main.c b/main.c
...
81 
	return 0;
 81 
	return 0;
82 
}
 82 
}
83 
  
 83 
  
 
  
 84 
static int l_get_dt(lua_State *L) {
 
  
 85 
	lua_pushnumber(L, GetFrameTime());
 
  
 86 
	return 1;
 
  
 87 
}
 
  
 88 
  
 
  
 89 
static int l_get_fps(lua_State *L) {
 
  
 90 
	lua_pushnumber(L, GetFPS());
 
  
 91 
	return 1;
 
  
 92 
}
 
  
 93 
  
84 
static int l_close_window(lua_State *L) {
 94 
static int l_close_window(lua_State *L) {
85 
	CloseWindow();
 95 
	CloseWindow();
86 
	TraceLog(LOG_DEBUG, "l_close_window");
 96 
	TraceLog(LOG_DEBUG, "l_close_window");
...
154 
	return 0;
 164 
	return 0;
155 
}
 165 
}
156 
  
 166 
  
157 
static int l_draw_pixel(lua_State *L) {}
 167 
static int l_draw_pixel(lua_State *L) {
158 
static int l_draw_line(lua_State *L) {}
 168 
	int x = luaL_checknumber(L, 1);
159 
static int l_draw_circle(lua_State *L) {}
 169 
	int y = luaL_checknumber(L, 2);
160 
static int l_draw_ellipse(lua_State *L) {}
 170 
	luaL_checktype(L, 3, LUA_TTABLE);
161 
static int l_draw_triangle(lua_State *L) {}
 171 
	Color color = {
 
  
 172 
		.r = (unsigned char)lua_getfield_int(L, 3, "r"),
 
  
 173 
		.g = (unsigned char)lua_getfield_int(L, 3, "g"),
 
  
 174 
		.b = (unsigned char)lua_getfield_int(L, 3, "b"),
 
  
 175 
		.a = (unsigned char)lua_getfield_int_opt(L, 3, "a", 255)
 
  
 176 
	};
 
  
 177 
	DrawPixel(x, y, color);
 
  
 178 
}
 
  
 179 
  
 
  
 180 
static int l_draw_line(lua_State *L) {
 
  
 181 
	int x1 = luaL_checknumber(L, 1);
 
  
 182 
	int y1 = luaL_checknumber(L, 2);
 
  
 183 
	int x2 = luaL_checknumber(L, 3);
 
  
 184 
	int y2 = luaL_checknumber(L, 4);
 
  
 185 
	luaL_checktype(L, 5, LUA_TTABLE);
 
  
 186 
	Color color = {
 
  
 187 
		.r = (unsigned char)lua_getfield_int(L, 5, "r"),
 
  
 188 
		.g = (unsigned char)lua_getfield_int(L, 5, "g"),
 
  
 189 
		.b = (unsigned char)lua_getfield_int(L, 5, "b"),
 
  
 190 
		.a = (unsigned char)lua_getfield_int_opt(L, 5, "a", 255)
 
  
 191 
	};
 
  
 192 
	DrawLine(x1, y1, x2, y2, color);
 
  
 193 
	return 0;
 
  
 194 
}
 
  
 195 
  
 
  
 196 
static int l_draw_circle(lua_State *L) {
 
  
 197 
	int center_x = luaL_checknumber(L, 1);
 
  
 198 
	int center_y = luaL_checknumber(L, 2);
 
  
 199 
	int radius = luaL_checknumber(L, 3);
 
  
 200 
	luaL_checktype(L, 4, LUA_TTABLE);
 
  
 201 
	Color color = {
 
  
 202 
		.r = (unsigned char)lua_getfield_int(L, 4, "r"),
 
  
 203 
		.g = (unsigned char)lua_getfield_int(L, 4, "g"),
 
  
 204 
		.b = (unsigned char)lua_getfield_int(L, 4, "b"),
 
  
 205 
		.a = (unsigned char)lua_getfield_int_opt(L, 4, "a", 255)
 
  
 206 
	};
 
  
 207 
	DrawCircle(center_x, center_y, radius, color);
 
  
 208 
	return 0;
 
  
 209 
}
 
  
 210 
  
 
  
 211 
static int l_draw_ellipse(lua_State *L) {
 
  
 212 
	int center_x = luaL_checknumber(L, 1);
 
  
 213 
	int center_y = luaL_checknumber(L, 2);
 
  
 214 
	int radius_h = luaL_checknumber(L, 3);
 
  
 215 
	int radius_v = luaL_checknumber(L, 4);
 
  
 216 
	luaL_checktype(L, 5, LUA_TTABLE);
 
  
 217 
	Color color = {
 
  
 218 
		.r = (unsigned char)lua_getfield_int(L, 5, "r"),
 
  
 219 
		.g = (unsigned char)lua_getfield_int(L, 5, "g"),
 
  
 220 
		.b = (unsigned char)lua_getfield_int(L, 5, "b"),
 
  
 221 
		.a = (unsigned char)lua_getfield_int_opt(L, 5, "a", 255)
 
  
 222 
	};
 
  
 223 
	DrawEllipse(center_x, center_y, radius_h, radius_v, color);
 
  
 224 
	return 0;
 
  
 225 
}
 
  
 226 
  
 
  
 227 
static int l_draw_triangle(lua_State *L) {
 
  
 228 
	int x1 = luaL_checknumber(L, 1);
 
  
 229 
	int y1 = luaL_checknumber(L, 2);
 
  
 230 
	int x2 = luaL_checknumber(L, 3);
 
  
 231 
	int y2 = luaL_checknumber(L, 4);
 
  
 232 
	int x3 = luaL_checknumber(L, 5);
 
  
 233 
	int y3 = luaL_checknumber(L, 6);
 
  
 234 
	luaL_checktype(L, 7, LUA_TTABLE);
 
  
 235 
	Color color = {
 
  
 236 
		.r = (unsigned char)lua_getfield_int(L, 7, "r"),
 
  
 237 
		.g = (unsigned char)lua_getfield_int(L, 7, "g"),
 
  
 238 
		.b = (unsigned char)lua_getfield_int(L, 7, "b"),
 
  
 239 
		.a = (unsigned char)lua_getfield_int_opt(L, 7, "a", 255)
 
  
 240 
	};
 
  
 241 
  
 
  
 242 
	// NOTE: Raylib orders vertices in counter-clockwise order. We order them
 
  
 243 
	// in clockwise order instead to make this a bit easier to use.
 
  
 244 
	Vector2 p1 = { x1, y1 };
 
  
 245 
	Vector2 p2 = { x3, y3 };
 
  
 246 
	Vector2 p3 = { x2, y2 };
 
  
 247 
  
 
  
 248 
	DrawTriangle(p1, p2, p3, color);
 
  
 249 
	return 0;
 
  
 250 
}
162 
  
 251 
  
163 
static void help(const char *argv0) {
 252 
static void help(const char *argv0) {
164 
	printf("Usage: %s [options]\n"
 253 
	printf("Usage: %s [options]\n"
...
226 
		lua_register(L, "begin_drawing", l_begin_drawing);
 315 
		lua_register(L, "begin_drawing", l_begin_drawing);
227 
		lua_register(L, "end_drawing", l_end_drawing);
 316 
		lua_register(L, "end_drawing", l_end_drawing);
228 
		lua_register(L, "set_fps", l_set_fps);
 317 
		lua_register(L, "set_fps", l_set_fps);
 
  
 318 
		lua_register(L, "get_fps", l_get_fps);
 
  
 319 
		lua_register(L, "get_dt", l_get_dt);
 
  
 320 
		lua_register(L, "clear_window", l_clear_window);
229 
		lua_register(L, "draw_info", l_draw_info);
 321 
		lua_register(L, "draw_info", l_draw_info);
230 
		lua_register(L, "clear_window", l_clear_window);
 
  
231 
		lua_register(L, "draw_rect", l_draw_rect);
 322 
		lua_register(L, "draw_rect", l_draw_rect);
232 
		lua_register(L, "draw_text", l_draw_text);
 323 
		lua_register(L, "draw_text", l_draw_text);
 
  
 324 
		lua_register(L, "draw_pixel", l_draw_pixel);
 
  
 325 
		lua_register(L, "draw_line", l_draw_line);
 
  
 326 
		lua_register(L, "draw_circle", l_draw_circle);
 
  
 327 
		lua_register(L, "draw_ellipse", l_draw_ellipse);
 
  
 328 
		lua_register(L, "draw_triangle", l_draw_triangle);
233 
  
 329 
  
234 
		// Loading embeded modules into Lua state.
 330 
		// Loading embeded modules into Lua state.
235 
		if (!load_embedded_module(L, json, json_len, "json")) return 1;
 331 
		if (!load_embedded_module(L, json, json_len, "json")) return 1;
...