davidovski/rectangles
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Add toggling cells

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davidovski 2023-04-22 00:50:09 +01:00
parent 5f5257652f
commit 25bd584beb
1 changed files with 37 additions and 25 deletions
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54
rectangles.c
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@ -12,9 +12,11 @@
#define GRID_H (int) (SCREEN_W / TILESIZE);
#define GRID_W (int) (SCREEN_H / TILESIZE);
const Rectangle EMPTY_RECT = (Rectangle) {0, 0, 0, 0};
Rectangle rectangles[RECT_COUNT];
int draw_grid() {
void draw_grid() {
// vertical lines
for (int x = 0; x < SCREEN_W; x += TILESIZE) {
DrawLine(x, 0, x, SCREEN_H, DARKGRAY);
@ -30,14 +32,6 @@ int rect_valid(Rectangle rect) {
}
int draw_rectangles() {
for (int i = 0; i < RECT_COUNT; i++) {
Rectangle rectangle = rectangles[i];
if (rect_valid(rectangle)) {
DrawRectangleRec(rectangle, DARKGRAY);
}
}
}
int rects_touch_y(Rectangle rect_a, Rectangle rect_b) {
return rect_a.x == rect_b.x && rect_a.width == rect_b.width &&
@ -51,10 +45,8 @@ int rects_touch_x(Rectangle rect_a, Rectangle rect_b) {
rect_b.x == rect_a.x + rect_a.width);
}
int draw_optimised_rectangles() {
Rectangle *optimised = malloc(sizeof(Rectangle) * RECT_COUNT);
int index = 0;
void optimise_rectangles(Rectangle* rectangles, Rectangle *optimised) {
Rectangle rect_a, rect_b;
// copy rectangles to optimised
@ -65,8 +57,6 @@ int draw_optimised_rectangles() {
}
}
Rectangle rect_a, rect_b;
// merge rectangles in x direction
for (int i = 0; i < RECT_COUNT; i++) {
@ -99,16 +89,33 @@ int draw_optimised_rectangles() {
}
}
}
}
void draw_rectangles() {
for (int i = 0; i < RECT_COUNT; i++) {
Rectangle rectangle = rectangles[i];
if (rect_valid(rectangle)) {
DrawRectangleRec(rectangle, DARKGRAY);
}
}
}
void draw_optimised_rectangles() {
Rectangle *optimised = malloc(sizeof(Rectangle) * RECT_COUNT);
optimise_rectangles(rectangles, optimised);
Rectangle rectangle;
for (int i = 0; i < RECT_COUNT; i++) {
if (rect_valid(rectangle = optimised[i]))
DrawRectangleLinesEx(rectangle, 2, GREEN);
}
free(optimised);
}
int draw() {
int draw(int *mode) {
BeginDrawing();
ClearBackground(LIGHTGRAY);
@ -116,15 +123,19 @@ int draw() {
draw_rectangles();
draw_optimised_rectangles();
if (IsMouseButtonDown(MOUSE_BUTTON_LEFT)) {
int gridx = (int) floor(GetMouseX() / TILESIZE);
int gridy = (int) floor(GetMouseY() / TILESIZE);
int rect_index = gridx + gridy*GRID_H;
Rectangle rectangle = (Rectangle){gridx * TILESIZE, gridy * TILESIZE, TILESIZE, TILESIZE};
// keep rectangles in order so that larger y and x are more right / left
int rect_index = gridx + gridy*GRID_H;
rectangles[rect_index] = rectangle;
if (IsMouseButtonPressed(MOUSE_BUTTON_LEFT)) {
*mode = !rect_valid(rectangles[rect_index]);
}
if (IsMouseButtonDown(MOUSE_BUTTON_LEFT)) {
rectangles[rect_index] = *mode ? rectangle : EMPTY_RECT;
}
EndDrawing();
@ -138,8 +149,9 @@ int main() {
rectangles[i] = (Rectangle){0, 0, 0, 0};
}
int mode = 0;
while(!WindowShouldClose()) {
draw();
draw(&mode);
}
CloseWindow();