Commit 8fed3ca

Added camera controls

Author	Mitja Felicijan <mitja.felicijan@gmail.com>	2025-08-09 04:39:39 +0200
Committer	Mitja Felicijan <mitja.felicijan@gmail.com>	2025-08-09 04:39:39 +0200
Commit	`8fed3ca3744c489e9e1d33fed7cf25a3dca26a21` (patch)

`-rw-r--r--`	main.c	65
`-rw-r--r--`	tests/graphics.lua	37

2 files changed, 85 insertions, 17 deletions



	const char *title = luaL_checkstring(L, 3);
	SetConfigFlags(FLAG_WINDOW_RESIZABLE | FLAG_VSYNC_HINT | FLAG_WINDOW_HIGHDPI);
	InitWindow(width, height, title);
  
  
	ctx.font_size = FONT_IMPORT_SIZE;
	ctx.font = LoadFontFromMemory(".ttf", dejavusans_mono_bold, dejavusans_mono_bold_len, ctx.font_size, NULL, 0);
	SetTextureFilter(ctx.font.texture, TEXTURE_FILTER_TRILINEAR);
  
	if (!IsFontValid(ctx.font)) {
		TraceLog(LOG_DEBUG, "Font not valid.");
	}
  
	ctx.camera.target = (Vector2){ 0.0f, 0.0f };
	ctx.camera.offset = (Vector2){ GetScreenHeight()/2.0f, GetScreenHeight()/2.0f };
	ctx.camera.rotation = 0.0f;
	ctx.camera.zoom = 1.0f;
  
	return 0;
}

static int l_set_fps(lua_State *L) {
	int fps = luaL_checknumber(L, 1);
	SetTargetFPS(fps);
  
	return 0;
}
  

	return 1;
}
  
static int l_get_width(lua_State *L) {
	lua_pushnumber(L, GetScreenWidth());
	return 1;
}
  
static int l_get_height(lua_State *L) {
	lua_pushnumber(L, GetScreenHeight());
	return 1;
}
  
static int l_close_window(lua_State *L) {
	CloseWindow();
  
	return 0;
}
  
static int l_start_drawing(lua_State *L) {
	BeginDrawing();
	return 0;
}
  
static int l_stop_drawing(lua_State *L) {
	EndDrawing();
	return 0;
}
  
static int l_start_camera(lua_State *L) {
	BeginMode2D(ctx.camera);
	return 0;
}
  
static int l_stop_camera(lua_State *L) {
	EndMode2D();
	return 0;
}
  
static int l_move_camera(lua_State *L) {
	int x = luaL_checknumber(L, 1);
	int y = luaL_checknumber(L, 2);
  
	ctx.camera.target.x = x;
	ctx.camera.target.y = y;
	return 0;
}
  
static int l_clear_window(lua_State *L) {
	luaL_checktype(L, 1, LUA_TTABLE);
	Color color = {

	return 0;
}
  
  
  
  
  
static void help(const char *argv0) {
	printf("Usage: %s [options]\n"
			"\nAvailable options:\n"

		lua_register(L, "open_window", l_open_window);
		lua_register(L, "close_window", l_close_window);
		lua_register(L, "window_running", l_window_running);
  
		lua_register(L, "start_drawing", l_start_drawing);
		lua_register(L, "stop_drawing", l_stop_drawing);
		lua_register(L, "clear_window", l_clear_window);
		
		lua_register(L, "start_camera", l_start_camera);
		lua_register(L, "stop_camera", l_stop_camera);
		lua_register(L, "move_camera", l_move_camera);
		
		lua_register(L, "set_fps", l_set_fps);
		lua_register(L, "get_fps", l_get_fps);
		lua_register(L, "get_dt", l_get_dt);
		lua_register(L, "get_width", l_get_width);
		lua_register(L, "get_height", l_get_height);
		
		lua_register(L, "draw_info", l_draw_info);
		lua_register(L, "draw_rect", l_draw_rect);
		lua_register(L, "draw_text", l_draw_text);

		lua_register(L, "draw_circle", l_draw_circle);
		lua_register(L, "draw_ellipse", l_draw_ellipse);
		lua_register(L, "draw_triangle", l_draw_triangle);
		
		lua_register(L, "load_image", l_load_image);
		lua_register(L, "load_audio", l_load_audio);
		
		lua_register(L, "button_down", l_button_down);
		lua_register(L, "button_pressed", l_button_pressed);
  


diff --git a/tests/graphics.lua b/tests/graphics.lua
...
4	test_button_color = color.RED	4	test_button_color = color.RED
5	test_button_speed = 200	5	test_button_speed = 200
6		6
		7	test_camera_position = { x = 0, y = 0 }
		8	test_camera_speed = 200
		9
7	test_images_asset1 = load_image("tests/icons/icon_1.png")	10	test_images_asset1 = load_image("tests/icons/icon_1.png")
8		11
9	open_window(800, 800, "Sample Window")	12	open_window(800, 800, "Sample Window")
...
87	draw_rect(test_button_square.x, test_button_square.y, 50, 50, test_button_color)	90	draw_rect(test_button_square.x, test_button_square.y, 50, 50, test_button_color)
88	end	91	end
89		92
		93	function test_camera()
		94	if button_down(button.PAD_UP) then
		95	test_camera_position.y = test_camera_position.y - (test_camera_speed * get_dt())
		96	end
		97
		98	if button_down(button.PAD_DOWN) then
		99	test_camera_position.y = test_camera_position.y + (test_camera_speed * get_dt())
		100	end
		101
		102	if button_down(button.PAD_LEFT) then
		103	test_camera_position.x = test_camera_position.x - (test_camera_speed * get_dt())
		104	end
		105
		106	if button_down(button.PAD_RIGHT) then
		107	test_camera_position.x = test_camera_position.x + (test_camera_speed * get_dt())
		108	end
		109
		110	-- Using camera
		111	move_camera(test_camera_position.x, test_camera_position.y)
		112
		113	start_camera()
		114	draw_rect(0, 0, 300, 200, color.YELLOW)
		115	stop_camera()
		116
		117	draw_text("This text doesn't move!", 10, 10, 20, color.VIOLET)
		118	end
		119
90	while window_running() do	120	while window_running() do
91	begin_drawing()	121	start_drawing()
92	clear_window(color.BLACK)	122	clear_window(color.BLACK)
93		123
94	-- test_api()	124	-- test_api()
95	test_buttons()	125	-- test_buttons()
		126	-- test_camera()
96		127
97	draw_info()	128	draw_info()
98	end_drawing()	129	stop_drawing()
99	end	130	end
100		131
101	close_window()	132	close_window()

diff --git a/main.c b/main.c
...
77	const char *title = luaL_checkstring(L, 3);	77	const char *title = luaL_checkstring(L, 3);
78	SetConfigFlags(FLAG_WINDOW_RESIZABLE \| FLAG_VSYNC_HINT \| FLAG_WINDOW_HIGHDPI);	78	SetConfigFlags(FLAG_WINDOW_RESIZABLE \| FLAG_VSYNC_HINT \| FLAG_WINDOW_HIGHDPI);
79	InitWindow(width, height, title);	79	InitWindow(width, height, title);
80	TraceLog(LOG_DEBUG, "l_open_window");
81		80
82	ctx.font_size = FONT_IMPORT_SIZE;	81	ctx.font_size = FONT_IMPORT_SIZE;
83	ctx.font = LoadFontFromMemory(".ttf", dejavusans_mono_bold, dejavusans_mono_bold_len, ctx.font_size, NULL, 0);	82	ctx.font = LoadFontFromMemory(".ttf", dejavusans_mono_bold, dejavusans_mono_bold_len, ctx.font_size, NULL, 0);
84	SetTextureFilter(ctx.font.texture, TEXTURE_FILTER_TRILINEAR);	83	SetTextureFilter(ctx.font.texture, TEXTURE_FILTER_TRILINEAR);
85		84
86	if (!IsFontValid(ctx.font)) {	85	if (!IsFontValid(ctx.font)) {
87	printf("font not valid\n");	86	TraceLog(LOG_DEBUG, "Font not valid.");
88	}	87	}
		88
		89	ctx.camera.target = (Vector2){ 0.0f, 0.0f };
		90	ctx.camera.offset = (Vector2){ GetScreenHeight()/2.0f, GetScreenHeight()/2.0f };
		91	ctx.camera.rotation = 0.0f;
		92	ctx.camera.zoom = 1.0f;
89		93
90	return 0;	94	return 0;
91	}	95	}
...
99	static int l_set_fps(lua_State *L) {	103	static int l_set_fps(lua_State *L) {
100	int fps = luaL_checknumber(L, 1);	104	int fps = luaL_checknumber(L, 1);
101	SetTargetFPS(fps);	105	SetTargetFPS(fps);
102	TraceLog(LOG_DEBUG, "l_set_fps");
103	return 0;	106	return 0;
104	}	107	}
105		108
...
113	return 1;	116	return 1;
114	}	117	}
115		118
		119	static int l_get_width(lua_State *L) {
		120	lua_pushnumber(L, GetScreenWidth());
		121	return 1;
		122	}
		123
		124	static int l_get_height(lua_State *L) {
		125	lua_pushnumber(L, GetScreenHeight());
		126	return 1;
		127	}
		128
116	static int l_close_window(lua_State *L) {	129	static int l_close_window(lua_State *L) {
117	CloseWindow();	130	CloseWindow();
118	TraceLog(LOG_DEBUG, "l_close_window");
119	return 0;	131	return 0;
120	}	132	}
121		133
122	static int l_begin_drawing(lua_State *L) {	134	static int l_start_drawing(lua_State *L) {
123	BeginDrawing();	135	BeginDrawing();
124	return 0;	136	return 0;
125	}	137	}
126		138
127	static int l_end_drawing(lua_State *L) {	139	static int l_stop_drawing(lua_State *L) {
128	EndDrawing();	140	EndDrawing();
129	return 0;	141	return 0;
130	}	142	}
131		143
		144	static int l_start_camera(lua_State *L) {
		145	BeginMode2D(ctx.camera);
		146	return 0;
		147	}
		148
		149	static int l_stop_camera(lua_State *L) {
		150	EndMode2D();
		151	return 0;
		152	}
		153
		154	static int l_move_camera(lua_State *L) {
		155	int x = luaL_checknumber(L, 1);
		156	int y = luaL_checknumber(L, 2);
		157
		158	ctx.camera.target.x = x;
		159	ctx.camera.target.y = y;
		160	return 0;
		161	}
		162
132	static int l_clear_window(lua_State *L) {	163	static int l_clear_window(lua_State *L) {
133	luaL_checktype(L, 1, LUA_TTABLE);	164	luaL_checktype(L, 1, LUA_TTABLE);
134	Color color = {	165	Color color = {
...
291	return 0;	322	return 0;
292	}	323	}
293		324
294	static int l_move_camera(lua_State *L) {
295	return 0;
296	}
297
298	static void help(const char *argv0) {	325	static void help(const char *argv0) {
299	printf("Usage: %s [options]\n"	326	printf("Usage: %s [options]\n"
300	"\nAvailable options:\n"	327	"\nAvailable options:\n"
...
366	lua_register(L, "open_window", l_open_window);	393	lua_register(L, "open_window", l_open_window);
367	lua_register(L, "close_window", l_close_window);	394	lua_register(L, "close_window", l_close_window);
368	lua_register(L, "window_running", l_window_running);	395	lua_register(L, "window_running", l_window_running);
369	lua_register(L, "begin_drawing", l_begin_drawing);	396
370	lua_register(L, "end_drawing", l_end_drawing);	397	lua_register(L, "start_drawing", l_start_drawing);
		398	lua_register(L, "stop_drawing", l_stop_drawing);
		399	lua_register(L, "clear_window", l_clear_window);
		400
		401	lua_register(L, "start_camera", l_start_camera);
		402	lua_register(L, "stop_camera", l_stop_camera);
		403	lua_register(L, "move_camera", l_move_camera);
		404
371	lua_register(L, "set_fps", l_set_fps);	405	lua_register(L, "set_fps", l_set_fps);
372	lua_register(L, "get_fps", l_get_fps);	406	lua_register(L, "get_fps", l_get_fps);
373	lua_register(L, "get_dt", l_get_dt);	407	lua_register(L, "get_dt", l_get_dt);
374	lua_register(L, "clear_window", l_clear_window);	408	lua_register(L, "get_width", l_get_width);
		409	lua_register(L, "get_height", l_get_height);
		410
375	lua_register(L, "draw_info", l_draw_info);	411	lua_register(L, "draw_info", l_draw_info);
376	lua_register(L, "draw_rect", l_draw_rect);	412	lua_register(L, "draw_rect", l_draw_rect);
377	lua_register(L, "draw_text", l_draw_text);	413	lua_register(L, "draw_text", l_draw_text);
...
380	lua_register(L, "draw_circle", l_draw_circle);	416	lua_register(L, "draw_circle", l_draw_circle);
381	lua_register(L, "draw_ellipse", l_draw_ellipse);	417	lua_register(L, "draw_ellipse", l_draw_ellipse);
382	lua_register(L, "draw_triangle", l_draw_triangle);	418	lua_register(L, "draw_triangle", l_draw_triangle);
		419
383	lua_register(L, "load_image", l_load_image);	420	lua_register(L, "load_image", l_load_image);
384	lua_register(L, "load_audio", l_load_audio);	421	lua_register(L, "load_audio", l_load_audio);
385	lua_register(L, "move_camera", l_move_camera);	422
386	lua_register(L, "button_down", l_button_down);	423	lua_register(L, "button_down", l_button_down);
387	lua_register(L, "button_pressed", l_button_pressed);	424	lua_register(L, "button_pressed", l_button_pressed);
388		425
...