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grid and mouse snapping

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This commit is contained in:
Luka Jankovic 2025-08-30 21:40:16 +02:00
parent 736829a119
commit 61986f41fa
7 changed files with 72 additions and 19 deletions
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57
kubo_window.c
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@ -17,16 +17,20 @@
*/
#include "kubo_window.h"
#include "raylib.h"
Camera2D camera = {0};
bool kubo_mouse_snap = false;
static void window_render(struct kubo_context *context);
static void window_left_mouse(struct kubo_context *context);
static void window_render(struct kubo_context *context, Vector2 mouse_pos);
static void window_left_mouse(struct kubo_context *context, Vector2 mouse_pos);
static void window_right_mouse(struct kubo_context *context);
static void new_wall_click(struct kubo_context *context);
static void new_wall_click(struct kubo_context *context, Vector2 mouse_pos);
static void new_wall_end(struct kubo_context *context);
static Vector2 mouse_grid_snap(Vector2 mouse_pos);
void kubo_window_init() {
SetConfigFlags(FLAG_WINDOW_RESIZABLE);
InitWindow(KUBO_WINDOW_WIDTH, KUBO_WINDOW_HEIGHT, "Kubo");
@ -44,7 +48,11 @@ bool kubo_window_should_close(struct kubo_context *context) {
}
void kubo_window_tick(struct kubo_context *context) {
window_render(context);
Vector2 mouse_pos = GetScreenToWorld2D(GetMousePosition(), camera);
if (kubo_mouse_snap) {
mouse_pos = mouse_grid_snap(mouse_pos);
}
window_render(context, mouse_pos);
kubo_camera_zoom(&camera);
if ((context->state.id == KUBO_CONTEXT_NORMAL &&
@ -54,7 +62,7 @@ void kubo_window_tick(struct kubo_context *context) {
}
if (IsMouseButtonPressed(MOUSE_BUTTON_LEFT)) {
window_left_mouse(context);
window_left_mouse(context, mouse_pos);
}
if (IsMouseButtonPressed(MOUSE_BUTTON_RIGHT)) {
window_right_mouse(context);
@ -62,7 +70,7 @@ void kubo_window_tick(struct kubo_context *context) {
kubo_input_handle(context, &camera);
}
static void window_render(struct kubo_context *context) {
static void window_render(struct kubo_context *context, Vector2 mouse_pos) {
BeginDrawing();
BeginMode2D(camera);
ClearBackground(WHITE);
@ -72,20 +80,36 @@ static void window_render(struct kubo_context *context) {
assert(wall != NULL);
kubo_wall_render(wall, context->state.id == KUBO_CONTEXT_WALL_SELECT,
&camera);
&camera, mouse_pos);
}
rlPushMatrix();
rlTranslatef(0, 25 * 50, 0);
rlRotatef(90, 1, 0, 0);
DrawGrid(100, KUBO_GRID_SIZE);
rlPopMatrix();
EndMode2D();
kubo_bar_render(context);
Vector2 mouse_cam = GetWorldToScreen2D(mouse_pos, camera);
switch (context->state.id) {
case KUBO_CONTEXT_WALL_NEW:
DrawCircle(mouse_cam.x, mouse_cam.y, 10, BLUE);
break;
default:
break;
}
kubo_bar_render(context, kubo_mouse_snap);
EndDrawing();
}
static void window_left_mouse(struct kubo_context *context) {
static void window_left_mouse(struct kubo_context *context, Vector2 mouse_pos) {
switch (context->state.id) {
case KUBO_CONTEXT_WALL_NEW:
new_wall_click(context);
new_wall_click(context, mouse_pos);
break;
case KUBO_CONTEXT_WALL_SELECT:
break;
@ -106,15 +130,14 @@ static void window_right_mouse(struct kubo_context *context) {
}
}
static void new_wall_click(struct kubo_context *context) {
static void new_wall_click(struct kubo_context *context, Vector2 mouse_pos) {
struct kubo_wall *current_wall = kubo_context_get_pending_wall(context);
if (!current_wall) {
return;
}
Vector2 new_pos = GetScreenToWorld2D(GetMousePosition(), camera);
kubo_wall_add_vertex(current_wall, new_pos);
kubo_wall_add_vertex(current_wall, mouse_pos);
current_wall->state = KUBO_WALL_DRAWING;
}
@ -127,3 +150,11 @@ static void new_wall_end(struct kubo_context *context) {
current_wall->state = KUBO_WALL_DONE;
}
static Vector2 mouse_grid_snap(Vector2 mouse_pos) {
Vector2 snap_pos = {
.x = round(mouse_pos.x / KUBO_GRID_SIZE) * KUBO_GRID_SIZE,
.y = round(mouse_pos.y / KUBO_GRID_SIZE) * KUBO_GRID_SIZE};
return snap_pos;
}