implement save on exit for editor

3 files changed, 104 insertions, 25 deletions

diff --git a/src/editor.c b/src/editor.c
index ac38891..b281300 100644
--- a/src/editor.c
+++ b/src/editor.c
@@ -1,17 +1,13 @@
 #include <raylib.h>
 #include <stdio.h>
+#include <stdlib.h>
 
 #include "tiled.h"
 
+int lastSelectedTile[2] = {0, 0};
 int selectedTile[2] = {0, 0};
 
-void update(Tiled *tiled) {
-    updateTiledCamera(tiled);
-    Vector2 mousePos = GetMousePosition();
-    Vector2 mapPos = translateTiledPosition(*tiled, mousePos);
-    selectedTile[0] = mapPos.x;
-    selectedTile[1] = mapPos.y;
-}
+int mode = -1;
 
 void drawOverlay(Tiled tiled) {
     Vector2 screenPos = translateTiledScreenPosition(tiled, (Vector2){selectedTile[0], selectedTile[1]});
@@ -24,18 +20,56 @@ void drawOverlay(Tiled tiled) {
             }, tiled.zoom/16, GREEN);
 }
 
-void modifyTile(Tiled *tiled, int i) {
-    if (selectedTile[0] >= 0 && selectedTile[0] < tiled->tiledMap.width
-        && selectedTile[1] >= 0 && selectedTile[1] < tiled->tiledMap.height) {
-        int tile = getTiledMapTile(tiled->tiledMap, selectedTile);
-        int tileCount = tiled->tiledMap.atlasSize[0] * tiled->tiledMap.atlasSize[1] + 1;
-        tile = (tile + i) % (tileCount);
-        setTiledMapTile(tiled->tiledMap, selectedTile, tile);
-        redrawTiledMap(*tiled);
+void modifyTile(Tiled *tiled, int tile) {
+    setTiledMapTile(tiled->tiledMap, selectedTile, tile);
+    redrawTiledMap(*tiled);
+}
+
+void setDrawMode(Tiled *tiled, int tile) {
+    mode = tile % tiled->tiledMap.tileCount;
+    if (mode < 0) mode += tiled->tiledMap.tileCount;
+    printf("mode: %d\n", tiled->tiledMap.tileCount);
+    modifyTile(tiled, mode);
+}
+
+void handleInputs(Tiled *tiled) {
+    if (IsMouseButtonPressed(MOUSE_BUTTON_LEFT))
+        setDrawMode(tiled, getTiledMapTile(tiled->tiledMap, selectedTile) + 1);
+
+    if (IsMouseButtonPressed(MOUSE_BUTTON_RIGHT))
+        setDrawMode(tiled, getTiledMapTile(tiled->tiledMap, selectedTile) - 1);
+
+    if (IsMouseButtonPressed(MOUSE_BUTTON_MIDDLE))
+        setDrawMode(tiled, 0);
+
+    if (IsMouseButtonReleased(MOUSE_BUTTON_LEFT) ||
+        IsMouseButtonReleased(MOUSE_BUTTON_RIGHT) ||
+        IsMouseButtonReleased(MOUSE_BUTTON_MIDDLE)) {
+        mode = -1;
+    }
+
+
+    if (!(selectedTile[0] == lastSelectedTile[0] &&
+          selectedTile[1] == lastSelectedTile[1])) {
+        if (mode != -1) modifyTile(tiled, mode);
+    }
+}
+
+void update(Tiled *tiled) {
+    updateTiledCamera(tiled);
+    Vector2 mousePos = GetMousePosition();
+    Vector2 mapPos = translateTiledPosition(*tiled, mousePos);
+    if (mapPos.x >= 0 && mapPos.x < tiled->tiledMap.width
+        && mapPos.y >= 0 && mapPos.y < tiled->tiledMap.height) {
+        lastSelectedTile[0] = selectedTile[0];
+        lastSelectedTile[1] = selectedTile[1];
+        selectedTile[0] = mapPos.x;
+        selectedTile[1] = mapPos.y;
     }
+    handleInputs(tiled);
 }
 
-int launchEditor(TiledMap tiledMap) {
+TiledMap launchEditor(TiledMap tiledMap) {
     SetConfigFlags(FLAG_WINDOW_RESIZABLE);
     InitWindow(SCREEN_W, SCREEN_H, "tiled");
 
@@ -44,12 +78,6 @@ int launchEditor(TiledMap tiledMap) {
     while (!WindowShouldClose()) {
         update(&tiled);
 
-        if (IsMouseButtonPressed(MOUSE_BUTTON_LEFT))
-            modifyTile(&tiled, 1);
-
-        if (IsMouseButtonPressed(MOUSE_BUTTON_RIGHT))
-            modifyTile(&tiled, -1);
-
         BeginDrawing();
 
         ClearBackground(LIGHTGRAY);
@@ -64,10 +92,13 @@ int launchEditor(TiledMap tiledMap) {
     unloadTiled(&tiled);
 
     CloseWindow();
-    return 0;
+    return tiled.tiledMap;
 }
 
 int main() {
     TiledMap tiledMap = loadTiledMap("map.tiles");
-    launchEditor(tiledMap);
+    printf("the top left is %d\n", tiledMap.tilelayout[0]);
+    TiledMap editedTiledMap = launchEditor(tiledMap);
+    printf("the top left is %d\n", editedTiledMap.tilelayout[0]);
+    saveTiledMap("map.tiles", tiledMap);
 }
diff --git a/src/tiledfile.c b/src/tiledfile.c
index 64a1e0d..78f9c0e 100644
--- a/src/tiledfile.c
+++ b/src/tiledfile.c
@@ -1,6 +1,7 @@
 #include <raylib.h>
 #include <stdlib.h>
 #include <stdio.h>
+#include <string.h>
 
 #include "tiledfile.h"
 
@@ -17,7 +18,6 @@ void textureFromPixels(Texture2D *texOut, Color *pixels, int width, int height)
     };
 
     *texOut = LoadTextureFromImage(checkedIm);
-    UnloadImage(checkedIm);
 }
 
 //! read rgba image from file
@@ -28,6 +28,23 @@ void readrgba(Texture2D *loc, int width, int height, FILE *file) {
 }
 
 
+
+//! write a big endian bytes from file
+int writeb(char * in, size_t noBytes, FILE * file) {
+    if (!is_bigendian()) {
+        int tmp;
+        // reverse byte order
+        for(int i = 0; i < noBytes/2; i++) {
+            tmp = in[i];
+            in[i] = in[noBytes-i-1];
+            in[noBytes-i-1] = tmp;
+        }
+        
+    }
+
+    return fwrite(in, (size_t)1, (size_t) noBytes, file);
+}
+
 //! read a big endian bytes from file
 int readb(char * out, size_t noBytes, FILE * file) {
     if (!fread(out, (size_t)1, (size_t) noBytes, file))
@@ -88,7 +105,35 @@ TiledMap loadTiledMap(char * filename) {
     tiledMap.atlasData = malloc(atlasSizeBytes);
     fread(tiledMap.atlasData, atlasSizeBytes, (size_t) 1, file);
 
+    tiledMap.tileCount = tiledMap.atlasSize[0]*tiledMap.atlasSize[1] + 1;
+
     fclose(file);
     return tiledMap;
 }
 
+void saveTiledMap(char * filename, TiledMap tiledMap) {
+    FILE * file;
+
+    if (!(file = fopen(filename, "wb"))) {
+        fprintf(stderr, "Failed to load %s\n", filename);
+        return;
+    }
+    size_t layoutSize = tiledMap.width*tiledMap.height;
+    size_t atlasSizeBytes = tiledMap.atlasSize[0]*tiledMap.tileSize*tiledMap.atlasSize[1]*tiledMap.tileSize*4;
+
+    fwrite("TILEFILEv2", 10, 1, file);
+
+    writeb((char *) &tiledMap.width, 4, file);
+    writeb((char *) &tiledMap.height, 4, file);
+    
+    fwrite(tiledMap.tilelayout, 1, layoutSize, file);
+
+    writeb((char *) &tiledMap.tileSize, 4, file);
+    writeb((char *) &tiledMap.atlasSize[0], 4, file);
+    writeb((char *) &tiledMap.atlasSize[1], 4, file);
+
+    fwrite(tiledMap.atlasData, 1, atlasSizeBytes, file);
+
+    fclose(file);
+    fprintf(stderr, "Written tiledfiled to %s\n", filename);
+}
diff --git a/src/tiledfile.h b/src/tiledfile.h
index 906bfdc..d8c98e9 100644
--- a/src/tiledfile.h
+++ b/src/tiledfile.h
@@ -6,6 +6,7 @@ typedef struct TiledMap {
     char * tilelayout;
     int tileSize;
     int atlasSize[2];
+    int tileCount;
     Color * atlasData;
 } TiledMap;
 
@@ -18,3 +19,5 @@ void setTiledMapTile(TiledMap tiledMap, int pos[2], char tile);
 char getTiledMapTile(TiledMap tiledMap, int pos[2]);
 
 TiledMap loadTiledMap(char * filename);
+
+void saveTiledMap(char * filename, TiledMap tiledMap);