A game engine for top-down 2D RPG games.
emmeline.girlkisser.top
rpg
game-engine
raylib
c99
1#include <keraforge.h>
2#include <raylib.h>
3#include <raymath.h>
4#include <stdio.h>
5#include <stdlib.h>
6
7
8static Camera2D cam;
9static struct kf_vec2(u32) select = { 0, 0 };
10static int selected_tile = 0;
11static bool selected_menu_this_frame = false;
12static enum {
13 menu_none,
14 menu_palette,
15 menu_escape
16} menu;
17
18static kf_inputbind_t
19 inputbind_move_up,
20 inputbind_move_down,
21 inputbind_move_left,
22 inputbind_move_right,
23 inputbind_ui_up,
24 inputbind_ui_down,
25 inputbind_ui_left,
26 inputbind_ui_right,
27 inputbind_select,
28 inputbind_cancel,
29 inputbind_pause,
30 inputbind_palette,
31 inputbind_zoom_reset,
32 inputbind_zoom_in,
33 inputbind_zoom_out
34;
35
36
37static
38void loadbinds()
39{
40 inputbind_move_up = kf_addinput("move_up", KEY_W, KEY_NULL, MOUSE_BUTTON_UNKNOWN, GAMEPAD_BUTTON_UNKNOWN, GAMEPAD_AXIS_LEFT_Y);
41 inputbind_move_down = kf_addinput("move_down", KEY_S, KEY_NULL, MOUSE_BUTTON_UNKNOWN, GAMEPAD_BUTTON_UNKNOWN, GAMEPAD_AXIS_LEFT_Y);
42 inputbind_move_left = kf_addinput("move_left", KEY_A, KEY_NULL, MOUSE_BUTTON_UNKNOWN, GAMEPAD_BUTTON_UNKNOWN, GAMEPAD_AXIS_LEFT_X);
43 inputbind_move_right = kf_addinput("move_right", KEY_D, KEY_NULL, MOUSE_BUTTON_UNKNOWN, GAMEPAD_BUTTON_UNKNOWN, GAMEPAD_AXIS_LEFT_X);
44
45 inputbind_ui_up = kf_addinput("ui_up", KEY_W, KEY_UP, MOUSE_BUTTON_UNKNOWN, GAMEPAD_BUTTON_LEFT_FACE_UP, GAMEPAD_AXIS_UNKNOWN);
46 inputbind_ui_down = kf_addinput("ui_down", KEY_S, KEY_DOWN, MOUSE_BUTTON_UNKNOWN, GAMEPAD_BUTTON_LEFT_FACE_DOWN, GAMEPAD_AXIS_UNKNOWN);
47 inputbind_ui_left = kf_addinput("ui_left", KEY_A, KEY_LEFT, MOUSE_BUTTON_UNKNOWN, GAMEPAD_BUTTON_LEFT_FACE_LEFT, GAMEPAD_AXIS_UNKNOWN);
48 inputbind_ui_right = kf_addinput("ui_right", KEY_D, KEY_RIGHT, MOUSE_BUTTON_UNKNOWN, GAMEPAD_BUTTON_LEFT_FACE_RIGHT, GAMEPAD_AXIS_UNKNOWN);
49
50 inputbind_select = kf_addinput("select", KEY_E, KEY_ENTER, MOUSE_BUTTON_UNKNOWN, GAMEPAD_BUTTON_RIGHT_FACE_DOWN, GAMEPAD_AXIS_UNKNOWN);
51 inputbind_cancel = kf_addinput("cancel", KEY_Q, KEY_ESCAPE, MOUSE_BUTTON_UNKNOWN, GAMEPAD_BUTTON_RIGHT_FACE_RIGHT, GAMEPAD_AXIS_UNKNOWN);
52
53 inputbind_pause = kf_addinput("pause", KEY_ESCAPE, KEY_NULL, MOUSE_BUTTON_UNKNOWN, GAMEPAD_BUTTON_MIDDLE_RIGHT, GAMEPAD_AXIS_UNKNOWN);
54 inputbind_palette = kf_addinput("palette", KEY_TAB, KEY_NULL, MOUSE_BUTTON_UNKNOWN, GAMEPAD_BUTTON_RIGHT_FACE_UP, GAMEPAD_AXIS_UNKNOWN);
55
56 inputbind_zoom_reset = kf_addinput("zoom_reset", KEY_ZERO, KEY_NULL, MOUSE_BUTTON_UNKNOWN, GAMEPAD_BUTTON_UNKNOWN, GAMEPAD_AXIS_UNKNOWN);
57 inputbind_zoom_in = kf_addinput("zoom_in", KEY_EQUAL, KEY_NULL, MOUSE_BUTTON_UNKNOWN, GAMEPAD_BUTTON_UNKNOWN, GAMEPAD_AXIS_UNKNOWN);
58 inputbind_zoom_out = kf_addinput("zoom_out", KEY_MINUS, KEY_NULL, MOUSE_BUTTON_UNKNOWN, GAMEPAD_BUTTON_UNKNOWN, GAMEPAD_AXIS_UNKNOWN);
59}
60
61static
62void setmenu(int m)
63{
64 menu = m;
65 selected_menu_this_frame = true;
66}
67
68static
69void _player_tick_move(struct kf_actor *self)
70{
71 struct kf_vec2(f32) v = {0, 0};
72
73 /* gamepad axis movement */
74 f32 gpx = kf_getgamepadaxis(inputbind_move_left);
75 f32 gpy = kf_getgamepadaxis(inputbind_move_up);
76 if (gpx > kf_deadzone || gpx < -kf_deadzone || gpy > kf_deadzone || gpy < -kf_deadzone)
77 {
78 v.y = gpy;
79 v.x = gpx;
80
81 f32 angle = Vector2LineAngle(Vector2Zero(), (Vector2){gpx, gpy}) * RAD2DEG;
82 angle /= 90;
83 switch ((int)roundf(angle))
84 {
85 case 0: self->pointing = kf_east; break;
86 case 1: self->pointing = kf_north; break;
87 case -2:
88 case 2: self->pointing = kf_west; break;
89 case -1: self->pointing = kf_south; break;
90 }
91
92 goto done;
93 }
94
95 /* non-axis movement */
96 bool w = kf_checkinputdown(inputbind_move_up);
97 bool s = kf_checkinputdown(inputbind_move_down);
98 bool a = kf_checkinputdown(inputbind_move_left);
99 bool d = kf_checkinputdown(inputbind_move_right);
100
101 if (a && d) { v.x = 0; }
102 else if (a) { v.x = -1; self->pointing = kf_west; }
103 else if (d) { v.x = 1; self->pointing = kf_east; }
104
105 if (w && s) { v.y = 0; }
106 else if (w) { v.y = -1; self->pointing = kf_north; }
107 else if (s) { v.y = 1; self->pointing = kf_south; }
108
109 v = kf_normalize_vec2(f32)(v);
110
111done:
112 if (v.x || v.y)
113 kf_actor_addforce(self, v);
114}
115
116static
117void _player_tick(struct kf_world *world, struct kf_actor *self)
118{
119 if (menu == menu_none)
120 _player_tick_move(self);
121
122 kf_actor_move(world, self, kf_dts);
123}
124
125static
126void _player_draw(struct kf_world *world, struct kf_actor *self)
127{
128 (void)world;
129 kf_actor_draw(self);
130
131 cam.target.x = self->pos.x + (self->size.x / 2);
132 cam.target.y = self->pos.y + (self->size.y / 2);
133}
134
135
136int main(int argc, const char *argv[])
137{
138 (void)argc;
139 (void)argv;
140
141 // SetTraceLogLevel(LOG_WARNING);
142 InitWindow(800, 600, "Keraforge");
143 SetTargetFPS(60);
144 SetExitKey(KEY_NULL);
145
146 loadbinds();
147
148 struct kf_spritesheet terrain = kf_loadspritesheet("data/res/img/tile/terrain.png", 16, 16);
149 KF_ADDTILE(
150 .key = "grass",
151 .mapcol = GREEN,
152 .sheet = &terrain,
153 .sprite = {0, 0},
154 );
155 KF_ADDTILE(
156 .key = "sand",
157 .mapcol = YELLOW,
158 .sheet = &terrain,
159 .sprite = {4, 0},
160 );
161 KF_ADDTILE(
162 .key = "stone",
163 .mapcol = GRAY,
164 .sheet = &terrain,
165 .sprite = {0, 4},
166 .collide = true,
167 );
168 KF_ADDTILE(
169 .key = "debug",
170 .mapcol = BLUE,
171 .sheet = &terrain,
172 .sprite = {4, 4},
173 );
174 printf("loaded %d tiles\n", kf_tiles.count);
175
176 struct kf_uiconfig *uiconfig = kf_ui_getconfig();
177 uiconfig->select = inputbind_select;
178 uiconfig->cancel = inputbind_cancel;
179 uiconfig->up = inputbind_ui_up;
180 uiconfig->down = inputbind_ui_down;
181
182 if (!DirectoryExists("data"))
183 MakeDirectory("data");
184
185 struct kf_world *world = NULL;
186 if (!kf_exists("data/map.bin"))
187 {
188 printf("-> creating world\n");
189 world = kf_world_new(128, 128, 1);
190 printf("-> saving world\n");
191 size_t len = kf_world_getsize(world);
192 printf("-> writing of %lu bytes\n", len);
193 if (!kf_writebin("data/map.bin", (u8 *)world, len))
194 {
195 fprintf(stderr, "error creating map: failed to save map.bin\n");
196 free(world);
197 exit(1);
198 }
199 }
200 else
201 {
202 printf("-> loading world\n");
203 size_t len = 0;
204 world = (struct kf_world *)kf_readbin("data/map.bin", &len);
205 printf("-> world is %lu bytes\n", len);
206 }
207 if (!world)
208 {
209 fprintf(stderr, "error: failed to load world\n");
210 exit(1);
211 }
212
213 struct kf_actor *player = kf_actor_new(kf_actor_loadspritesheet("data/res/img/char/whom.png"), 10, 10, true);
214 player->sizeoffset.y = 6;
215 player->pos.x = world->width / 4.0f * KF_TILE_SIZE_PX;
216 player->pos.y = world->height / 4.0f * KF_TILE_SIZE_PX;
217 player->tick = _player_tick;
218 player->draw = _player_draw;
219 player->controlled = true;
220
221 cam = (Camera2D){0};
222 cam.offset.x = GetScreenWidth() / 2.0f;
223 cam.offset.y = GetScreenHeight() / 2.0f;
224 cam.zoom = 2;
225
226 int running = 1;
227 while (!WindowShouldClose() && running)
228 {
229 if (IsWindowResized())
230 {
231 cam.offset.x = GetScreenWidth() / 2.0f;
232 cam.offset.y = GetScreenHeight() / 2.0f;
233 }
234
235 player->tick(world, player);
236
237 Vector2 v = GetScreenToWorld2D(GetMousePosition(), cam);
238 select.x = v.x / KF_TILE_SIZE_PX;
239 select.y = v.y / KF_TILE_SIZE_PX;
240
241 if (kf_checkinputpress(inputbind_palette))
242 setmenu(menu_palette);
243 else if (kf_checkinputpress(inputbind_cancel) && menu == menu_none)
244 setmenu(menu_escape);
245 else if (kf_checkinputpress(inputbind_zoom_reset))
246 cam.zoom = 2;
247 else if (kf_checkinputpress(inputbind_zoom_in) && cam.zoom < 3.50f)
248 cam.zoom += 0.25f;
249 else if (kf_checkinputpress(inputbind_zoom_out) && cam.zoom > 1.00f)
250 cam.zoom -= 0.25f;
251
252 BeginDrawing();
253 ClearBackground(BLACK);
254
255 BeginMode2D(cam);
256 kf_world_draw(world, cam);
257 // kf_world_drawcolliders(world, player, cam);
258 if (select.x < world->width && select.y < world->height)
259 {
260 struct kf_tile *t = kf_world_gettile(world, select.x, select.y);
261 if (IsMouseButtonPressed(MOUSE_BUTTON_LEFT))
262 {
263 t->id = (kf_tileid_t)selected_tile;
264 kf_world_updatetile(world, select.x, select.y, true);
265 }
266 DrawRectangleLines(select.x * KF_TILE_SIZE_PX, select.y * KF_TILE_SIZE_PX, KF_TILE_SIZE_PX, KF_TILE_SIZE_PX, WHITE);
267 struct kf_vec2(u32) s = kf_getspritefortilebitmask(t->data);
268 DrawText(TextFormat("%d [0x%04x] (%d,%d) {%d,%d}", t->id, t->data, select.x, select.y, s.x, s.y), select.x * KF_TILE_SIZE_PX, select.y * KF_TILE_SIZE_PX - 10, 10, BLACK);
269 }
270 player->draw(world, player);
271 EndMode2D();
272
273 if (selected_menu_this_frame)
274 {
275 selected_menu_this_frame = false;
276 }
277 else
278 {
279 switch (menu)
280 {
281 case menu_none:
282 break;
283 case menu_palette:
284 if (kf_ui_choice("Select tile", &kf_tiles.key[0], kf_tiles.count + 1, &selected_tile))
285 setmenu(menu_none);
286 break;
287 case menu_escape:
288 {
289 static int result = 1;
290 if (kf_ui_yesno("Exit game?", &result))
291 {
292 menu = menu_none;
293 if (result)
294 running = 0;
295 result = 1;
296 }
297 break;
298 }
299 }
300 }
301
302 DrawFPS(0, 0);
303 DrawText(TextFormat("%f", kf_dts), 0, 20, 20, RED);
304
305 EndDrawing();
306
307 kf_frame++;
308 kf_dts = GetFrameTime();
309 kf_dtms = kf_dts * 1000;
310 }
311
312 if (world)
313 {
314 if (!kf_writebin("data/map.bin", (u8 *)world, kf_world_getsize(world)))
315 fprintf(stderr, "error: failed to save map.bin\n");
316 free(world);
317 }
318 CloseWindow();
319
320 return 0;
321}