cracked tile picking

3 files changed, 48 insertions, 3 deletions

diff --git a/inc/window.h b/inc/window.h
index 1ab9a6a..b4e04b1 100644
--- a/inc/window.h
+++ b/inc/window.h
@@ -33,3 +33,4 @@ void window_event(Window *this, struct Root *root, SDL_Event *e);
 void window_redraw(Window *this, struct Root *root);
 void window_set_draw_color(Window *this, uint8_t r, uint8_t g, uint8_t b, uint8_t a);
 void window_fill_rect(Window *this, const SDL_Rect *rect);
+void window_draw_rect(Window *this, const SDL_Rect *rect);
diff --git a/src/editor.c b/src/editor.c
index 640852d..fa9b209 100644
--- a/src/editor.c
+++ b/src/editor.c
@@ -15,6 +15,21 @@ editor_redraw(Window *this, Root *root)
 		grid_draw(root->brush, root->tileset, this, dx, dy);
 		tileset_set_alpha(root->tileset, 255);
 	}
+
+	if (this->clicked) {
+		const int x = min(this->clicked_x, this->mouse_x);
+		const int y = min(this->clicked_y, this->mouse_y);
+		const int w = max(this->clicked_x, this->mouse_x) - x + 1;
+		const int h = max(this->clicked_y, this->mouse_y) - y + 1;
+		const SDL_Rect rect = {
+			x * root->cfg->tile_width - 1,
+			y * root->cfg->tile_height - 1,
+			w * root->cfg->tile_width + 2,
+			h * root->cfg->tile_height + 2
+		};
+		window_set_draw_color(this, 255, 255, 0, 255);
+		window_draw_rect(this, &rect);
+	}
 }
 
 void
@@ -26,6 +41,7 @@ editor_event(Window *this, Root *root, SDL_Event *e)
 		_ev_mouse(this, root);
 		break;
 	case SDL_MOUSEBUTTONDOWN:
+	case SDL_MOUSEBUTTONUP:
 		_ev_mouse(this, root);
 		break;
 	case SDL_WINDOWEVENT:
@@ -55,14 +71,35 @@ _ev_mousemotion(Window *this, Root *root, SDL_MouseMotionEvent *e)
 static void
 _ev_mouse(Window *this, Root *root)
 {
-	if (input_button_down(&this->input, SDL_BUTTON_RIGHT)) {
+	Input *const input = &this->input;
+	if (input_button_pressed(input, SDL_BUTTON_LEFT) &&
+	    input_key_down(input, SDL_SCANCODE_LCTRL)) {
+		this->clicked = true;
+		this->clicked_x = this->mouse_x;
+		this->clicked_y = this->mouse_y;
+	} else if (input_button_released(input, SDL_BUTTON_LEFT) &&
+	           this->clicked) {
+		this->clicked = false;
+		const int x = min(this->clicked_x, this->mouse_x);
+		const int y = min(this->clicked_y, this->mouse_y);
+		const int w = max(this->clicked_x, this->mouse_x) - x + 1;
+		const int h = max(this->clicked_y, this->mouse_y) - y + 1;
+		grid_resize(root->brush, w, h);
+		forloop (ty, 0, h) {
+			forloop (tx, 0, w) {
+				int tile = grid_get(root->cell, tx + x, ty + y);
+				grid_set(root->brush, tx, ty, tile);
+			}
+		}
+		this->redraw = true;
+	} else if (input_button_down(input, SDL_BUTTON_RIGHT)) {
 		if (grid_get(root->cell, this->mouse_x, this->mouse_y)) {
 			grid_set(root->cell, this->mouse_x, this->mouse_y, 0);
 			this->redraw = true;
 		}
-	} else if (input_button_down(&this->input, SDL_BUTTON_LEFT)) {
+	} else if (input_button_down(input, SDL_BUTTON_LEFT)) {
 		const int prev_tile = grid_get(root->cell, this->mouse_x, this->mouse_y);
-		if (input_key_down(&this->input, SDL_SCANCODE_LCTRL)) {
+		if (input_key_down(input, SDL_SCANCODE_LCTRL)) {
 			grid_resize(root->brush, 1, 1);
 			grid_set(root->brush, 0, 0, prev_tile);
 			this->redraw = true;
diff --git a/src/window.c b/src/window.c
index 2ef97b7..4f73792 100644
--- a/src/window.c
+++ b/src/window.c
@@ -104,3 +104,10 @@ window_fill_rect(Window *this, const SDL_Rect *rect)
 	if (SDL_RenderFillRect(this->ren, rect) < 0)
 		pwrn("%s", SDL_GetError());
 }
+
+void
+window_draw_rect(Window *this, const SDL_Rect *rect)
+{
+	if (SDL_RenderDrawRect(this->ren, rect) < 0)
+		pwrn("%s", SDL_GetError());
+}