Ammerhai/Mikemon
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add the ability to drag tile changes

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This commit is contained in:
Sven Balzer 2025-03-11 11:31:08 +01:00
parent 2ad30458bf
commit 0043563f7d
1 changed files with 49 additions and 16 deletions
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65
src/main.cpp
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@ -122,6 +122,9 @@ V4 cpu_tile_infos_buffer[SDL_arraysize(tile_infos)];
Sint32 selected_tile = -1;
Sint32 selected_rotation = 0;
bool dragging_tile_change = false;
Sint32 drag_start_pos[2];
void save_map() {
log("Save file is under construction.");
FILE* file = fopen("../assets/map/map.sv", "wb");
@ -1118,10 +1121,7 @@ int main(int argc, char **argv) {
if (io.WantCaptureMouse)
continue;
float mouse_x = event.button.x;
float mouse_y = event.button.y;
V2 mouse = remap(V2{ 0, 0 }, V2{ (float)window_width, (float)window_height }, V2{ -1, 1 }, V2{ 1, -1 }, V2{ mouse_x, mouse_y });
V2 mouse = remap(V2{ 0, 0 }, V2{ (float)window_width, (float)window_height }, V2{ -1, 1 }, V2{ 1, -1 }, V2{ event.button.x, event.button.y });
V3 camera_position = (inverse_view_matrix * V4_(0, 0, 0, 1)).xyz;
V3 probe = Unproject(V3_(mouse, .5));
@ -1133,20 +1133,13 @@ int main(int argc, char **argv) {
Sint32 tile_x = roundf(floor_intersection.x);
Sint32 tile_y = roundf(floor_intersection.y);
if (selected_tile != -1) {
if(0 <= tile_x && tile_x < map_width &&
0 <= tile_y && tile_y < map_height) {
if (selected_rotation == -1) {
Sint32 rotation = SDL_rand(4);
map_tiles[tile_x + map_width * tile_y] = ((rotation & 3) << 16) | selected_tile;
} else {
map_tiles[tile_x + map_width * tile_y] = ((selected_rotation & 3) << 16) | selected_tile;
}
if(0 <= tile_x && tile_x < map_width && 0 <= tile_y && tile_y < map_height) {
dragging_tile_change = true;
update_buffer(world_buffer, (tile_x + map_width * tile_y) * sizeof(Uint32), sizeof(Uint32), &map_tiles[tile_x + map_width * tile_y]);
}
drag_start_pos[0] = tile_x;
drag_start_pos[1] = tile_y;
}
SDL_Keymod modifiers = SDL_GetModState();
if (modifiers & SDL_KMOD_SHIFT && tile_x <= -1) {
if(modifiers & SDL_KMOD_CTRL)
@ -1176,6 +1169,46 @@ int main(int argc, char **argv) {
change_map_size('S', 1);
}
} break;
case SDL_EVENT_MOUSE_BUTTON_UP: {
if (io.WantCaptureMouse)
continue;
if (selected_tile != -1 && dragging_tile_change) {
V2 mouse = remap(V2{ 0, 0 }, V2{ (float)window_width, (float)window_height }, V2{ -1, 1 }, V2{ 1, -1 }, V2{ event.button.x, event.button.y });
V3 camera_position = (inverse_view_matrix * V4_(0, 0, 0, 1)).xyz;
V3 probe = Unproject(V3_(mouse, .5));
V3 ray_dir = normalize(probe - camera_position);
float t = -camera_position.z / ray_dir.z;
V3 floor_intersection = camera_position + (t * ray_dir);
Sint32 tile_x = clamp(0, (Sint32)roundf(floor_intersection.x), map_width - 1);
Sint32 tile_y = clamp(0, (Sint32)roundf(floor_intersection.y), map_height - 1);
Sint32 start_x = min(tile_x, drag_start_pos[0]);
Sint32 start_y = min(tile_y, drag_start_pos[1]);
Sint32 end_x = max(tile_x, drag_start_pos[0]);
Sint32 end_y = max(tile_y, drag_start_pos[1]);
for (Sint32 y = start_y; y <= end_y; y++) {
for (Sint32 x = start_x; x <= end_x; x++) {
if (selected_rotation == -1) {
Sint32 rotation = SDL_rand(4);
map_tiles[x + map_width * y] = ((rotation & 3) << 16) | selected_tile;
} else {
map_tiles[x + map_width * y] = ((selected_rotation & 3) << 16) | selected_tile;
}
}
}
update_buffer(world_buffer, 0, map_width * map_height * sizeof(Uint32), map_tiles);
}
dragging_tile_change = false;
} break;;
}
}