2 files changed, 136 insertions, 0 deletions
diff --git a/explode/Makefile b/explode/Makefile
new file mode 100644
index 0000000..f0eca91
--- /dev/null
+++ b/explode/Makefile
@@ -0,0 +1,8 @@
+# Makefile template, copy and remove comments
+
+SRC := ../util.c explode.c
+OUT := ../bin/explode
+LIBS := -lraylib -lGL -lm -lpthread -ldl -lrt -lX11
+
+make all:
+	gcc $(SRC) -o $(OUT) $(LIBS)
diff --git a/explode/explode.c b/explode/explode.c
new file mode 100644
index 0000000..d8e0916
--- /dev/null
+++ b/explode/explode.c
@@ -0,0 +1,128 @@
+#include <raylib.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+const int WindowHeight = 600;
+const int WindowWidth = 800;
+
+int rows;
+int cols;
+int cellSize;
+
+enum color {
+    red, blue, green, violet, black
+};
+
+typedef char byte;
+typedef struct Tile {
+    byte number;
+    enum color color;
+} Tile;
+
+Tile* board;
+
+Color colorFromEnum(enum color c){
+    switch(c){
+    case red:
+        return RED;
+        break;
+    case blue:
+        return BLUE;
+        break;
+    case green:
+        return GREEN;
+        break;
+    case violet:
+        return VIOLET;
+        break;
+    case black:
+    default:
+        return BLACK;
+    }
+}
+
+void drawBoard(){
+    int ymax = cols * cellSize;
+    int xmax = rows * cellSize;
+    int offset = 2;
+    for (int i = 1; i <= rows; i++){
+        DrawLine(i * cellSize, 0, i * cellSize, ymax, BLACK);
+    }
+    for (int j = 1; j <= cols; j++){
+        DrawLine(0 , j * cellSize, xmax, j * cellSize, BLACK);
+    }
+    for (int i = 0; i < rows; i++){
+        for (int j = 0; j < cols; j++){
+            char text[16];
+            Tile tile = board[i * cols + j];
+            snprintf(text, 16, "%d", tile.number);
+            DrawText(text, j * cellSize + offset, i * cellSize + offset, cellSize - 2 * offset, colorFromEnum(tile.color));
+        }
+    }
+}
+
+int selectTile(int x, int y){
+    int r = y / cellSize;
+    int c = x / cellSize;
+    return r * cols + c;
+}
+
+void explode(int r, int c, enum color color){
+    int index = r * cols + c;
+    board[index].number++;
+    board[index].color = color;
+    if (board[index].number > 3){
+        board[index].number = 0;
+        board[index].color = black;
+        if (r > 0)        explode(r - 1, c, color);
+        if (r < rows - 1) explode(r + 1, c, color);
+        if (c > 0)        explode(r, c - 1, color);
+        if (c < cols - 1) explode(r, c + 1, color);
+    }
+}
+
+int main(){
+    InitWindow(WindowHeight, WindowWidth, "Explode");
+    rows = cols = 6;
+    cellSize = 60;
+    board = (Tile*) calloc(sizeof(Tile), rows * cols);
+
+    Color turns[] = {RED, BLUE, GREEN, VIOLET};
+    int alive[] = {1, 1, 1, 1};
+    int turn_index = 0;
+    for (int i = 0; i < rows * cols; i++){
+        board[i].color = black;
+    }
+
+    board[1 + 1 * cols].color = red;
+    board[1 + 4 * cols].color = blue;
+    board[4 + 1 * cols].color = green;
+    board[4 + 4 * cols].color = violet;
+
+    while (!WindowShouldClose()){
+        BeginDrawing();
+        ClearBackground(WHITE);
+        drawBoard();
+        if (!alive[turn_index]){
+            turn_index = (turn_index + 1) % 4;
+        }
+        if (IsMouseButtonPressed(MOUSE_LEFT_BUTTON)){
+            int index = selectTile(GetMouseX(), GetMouseY());
+            if (index < rows * cols && ColorIsEqual(colorFromEnum(board[index].color), turns[turn_index])){
+                explode(index / cols, index % cols, board[index].color);
+                int number_sums[] = {0, 0, 0, 0};
+                for (int i = 0; i < rows * cols; i++){
+                    number_sums[board[i].color]++;
+                }
+                for (int i = 0; i < 4; i++){
+                    if (number_sums[i] == 0){
+                        alive[i] = 0;
+                    }
+                }
+                turn_index = (turn_index + 1) % 4;
+            }
+        }
+        EndDrawing();
+    }
+    free(board);
+}