New engine flag and some other stuff.

examples/intro/map.d

@@ -5,7 +5,7 @@ import parin;
 auto atlas = TextureId();
 auto map = TileMap();
 auto camera = Camera(0, 0, true);
-auto tile = Tile(16, 16, 145);
+auto tile = Tile(16, 145);
 auto tileFlip = Flip.none;
 
 void ready() {
@@ -24,15 +24,15 @@ bool update(float dt) {
     foreach (point; map.gridPoints(camera.area)) {
         if (map[point] < 0) continue;
         auto area = Rect(map.toWorldPoint(point), map.tileSize);
-        while (area.hasIntersection(tile.area)) {
+        while (area.hasIntersection(Rect(tile.position, tile.size))) {
             tile.position -= wasd * Vec2(dt);
             camera.position = tile.position + tile.size * Vec2(0.5f);
         }
     }
     // Draw the world.
     camera.attach();
-    drawTile(atlas, tile, DrawOptions(tileFlip));
     drawTileMap(atlas, map, camera);
+    drawTile(atlas, tile, DrawOptions(tileFlip));
     camera.detach();
     return false;
 }

packages/mapy/.closed

@@ -3,6 +3,7 @@
 [default]
 -I=../../source
 -L=-lraylib
+-D=-betterC
 -R=../../assets/parin_atlas.png
 # Those lines work for me. Use -s=custom to fix any errors.
 -I=../../../joka/source
@@ -11,3 +12,5 @@
 [custom]
 -I=../../source
 -L=-lraylib
+-D=-betterC
+-R=../../assets/parin_atlas.png

source/parin/engine.d

@@ -30,13 +30,14 @@ enum defaultEngineSoundsCapacity   = 64;
 enum defaultEngineFontsCapacity    = 16;
 
 enum EngineFlag : EngineFlags {
-    none              = 0x0000,
-    isUpdating        = 0x0001,
-    isUsingAssetsPath = 0x0002,
-    isPixelSnapped    = 0x0004,
-    isPixelPerfect    = 0x0008,
-    isFullscreen      = 0x0010,
-    isCursorVisible   = 0x0020,
+    none                  = 0x0000,
+    isUpdating            = 0x0001,
+    isUsingAssetsPath     = 0x0002,
+    isPixelSnapped        = 0x0004,
+    isPixelPerfect        = 0x0008,
+    isEmptyTextureVisible = 0x0010,
+    isFullscreen          = 0x0020,
+    isCursorVisible       = 0x0040,
 }
 
 /// Flipping orientations.
@@ -1319,7 +1320,7 @@ void openWindow(int width, int height, const(IStr)[] args, IStr title = "Parin")
     // Engine stuff.
     engineState = cast(EngineState*) jokaMalloc(EngineState.sizeof);
     jokaMemset(engineState, 0, EngineState.sizeof);
-    engineState.flags |= EngineFlag.isUsingAssetsPath;
+    engineState.flags |= EngineFlag.isUsingAssetsPath | EngineFlag.isEmptyTextureVisible;
     engineState.borderColor = black;
     engineState.defaultFilter = Filter.init;
     engineState.defaultWrap = Wrap.init;
@@ -1347,21 +1348,13 @@ void openWindow(int width, int height, const(IStr)[] args, IStr title = "Parin")
     rl.UnloadImage(monogramImage);
 }
 
-/// Passes C strings to the window arguments.
-/// You should avoid calling this function manually.
-extern(C)
-void openWindowExtraStep(int argc, ICStr* argv) {
-    engineState.envArgsBuffer.clear();
-    foreach (i; 0 .. argc) engineState.envArgsBuffer.append(argv[i].cStrToStr());
-    if (engineState.envArgsBuffer.length) engineState.assetsPath.append(pathConcat(engineState.envArgsBuffer[0].pathDirName, "assets"));
-}
-
 /// Opens a window with the specified size and title, using C strings.
 /// You should avoid calling this function manually.
 extern(C)
 void openWindowC(int width, int height, int argc, ICStr* argv, ICStr title = "Parin") {
     openWindow(width, height, null, title.cStrToStr());
-    openWindowExtraStep(argc, argv);
+    foreach (i; 0 .. argc) engineState.envArgsBuffer.append(argv[i].cStrToStr());
+    if (engineState.envArgsBuffer.length) engineState.assetsPath.append(pathConcat(engineState.envArgsBuffer[0].pathDirName, "assets"));
 }
 
 /// Use by the `updateWindow` function.
@@ -1543,6 +1536,21 @@ void setIsPixelPerfect(bool value) {
         : engineState.flags & ~EngineFlag.isPixelPerfect;
 }
 
+
+/// Returns true if drawing is done when an empty texture is used.
+extern(C)
+bool isEmptyTextureVisible() {
+    return cast(bool) (engineState.flags & EngineFlag.isEmptyTextureVisible);
+}
+
+/// Sets whether drawing should be done when an empty texture is used.
+extern(C)
+void setIsEmptyTextureVisible(bool value) {
+    engineState.flags = value
+        ? engineState.flags | EngineFlag.isEmptyTextureVisible
+        : engineState.flags & ~EngineFlag.isEmptyTextureVisible;
+}
+
 /// Returns true if the application is currently in fullscreen mode.
 // NOTE: There is a conflict between the flag and real-window-state, which could potentially cause issues for some users.
 extern(C)
@@ -2267,7 +2275,11 @@ void drawLine(Line area, float size, Rgba color = white) {
 /// Draws a portion of the specified texture at the given position with the specified draw options.
 extern(C)
 void drawTextureAreaX(Texture texture, Rect area, Vec2 position, DrawOptions options = DrawOptions()) {
-    if (texture.isEmpty || area.size.x <= 0.0f || area.size.y <= 0.0f) return;
+    if (area.size.x <= 0.0f || area.size.y <= 0.0f) return;
+    if (texture.isEmpty) {
+        if (isEmptyTextureVisible) drawRect(Rect(position, area.size * options.scale).area(options.hook), red);
+        return;
+    }
     auto target = Rect(position, area.size * options.scale.abs());
     auto origin = options.origin.isZero ? target.origin(options.hook) : options.origin;
     auto flip = options.flip;
@@ -2326,6 +2338,11 @@ void drawTexture(TextureId texture, Vec2 position, DrawOptions options = DrawOpt
 /// Draws a 9-patch texture from the specified texture area at the given target area.
 extern(C)
 void drawTexturePatchX(Texture texture, Rect area, Rect target, bool isTiled, DrawOptions options = DrawOptions()) {
+    if (texture.isEmpty) {
+        if (isEmptyTextureVisible) drawRect(target.area(options.hook), red);
+        return;
+    }
+
     auto tileSize = (area.size / Vec2(3.0f)).floor();
     auto hOptions = options;
     auto vOptions = options;
@@ -2598,10 +2615,9 @@ void drawDebugText(IStr text, Vec2 position, DrawOptions options = DrawOptions()
 mixin template runGame(alias readyFunc, alias updateFunc, alias finishFunc, int width = 960, int height = 540, IStr title = "Parin") {
     version (D_BetterC) {
         extern(C)
-        int main(int argc, immutable(char)** argv) {
+        int main(int argc, const(char)** argv) {
             alias f = extern(C) bool function(float dt);
-            openWindow(width, height, null, title);
-            openWindowExtraStep(argc, cast(ICStr*) argv);
+            openWindowC(width, height, argc, argv, title);
             readyFunc();
             updateWindow(cast(f) &updateFunc);
             finishFunc();

source/parin/map.d

@@ -18,26 +18,28 @@ import parin.engine;
 @safe @nogc nothrow:
 
 struct Tile {
-    int width = 16;
-    int height = 16;
-    short id;
+    int widthHeight = 16;
     Vec2 position;
+    short id;
 
     @safe @nogc nothrow:
 
-    this(int width, int height, short id, Vec2 position = Vec2()) {
-        this.width = width;
-        this.height = height;
+    this(int widthHeight, short id, Vec2 position = Vec2()) {
+        this.widthHeight = widthHeight;
         this.id = id;
         this.position = position;
     }
 
-    Vec2 size() {
-        return Vec2(width, height);
+    int width() {
+        return widthHeight;
     }
 
-    Rect area() {
-        return Rect(position, size);
+    int height() {
+        return widthHeight;
+    }
+
+    Vec2 size() {
+        return Vec2(widthHeight, widthHeight);
     }
 
     Sz row(Sz colCount) {
@@ -49,7 +51,7 @@ struct Tile {
     }
 
     Rect textureArea(Sz colCount) {
-        return Rect(col(colCount) * width, row(colCount) * height, width, height);
+        return Rect(col(colCount) * widthHeight, row(colCount) * widthHeight, widthHeight, widthHeight);
     }
 
     /// Moves the tile to follow the target position at the specified speed.
@@ -313,7 +315,11 @@ Fault saveTileMap(IStr path, TileMap map) {
 }
 
 void drawTileX(Texture texture, Tile tile, DrawOptions options = DrawOptions()) {
-    if (texture.isEmpty || tile.id < 0 || tile.width <= 0 || tile.height <= 0) return;
+    if (tile.id < 0 || tile.width <= 0 || tile.height <= 0) return;
+    if (texture.isEmpty) {
+        if (isEmptyTextureVisible) drawRect(Rect(tile.position, tile.size * options.scale).area(options.hook), green);
+        return;
+    }
     drawTextureAreaX(texture, tile.textureArea(texture.width / tile.width), tile.position, options);
 }
 
@@ -322,7 +328,12 @@ void drawTile(TextureId texture, Tile tile, DrawOptions options = DrawOptions())
 }
 
 void drawTileMapX(Texture texture, TileMap map, Camera camera, DrawOptions options = DrawOptions()) {
-    if (texture.isEmpty || map.softRowCount == 0 || map.softColCount == 0 || map.tileWidth <= 0 || map.tileHeight <= 0) return;
+    if (map.softRowCount == 0 || map.softColCount == 0 || map.tileWidth <= 0 || map.tileHeight <= 0) return;
+    if (texture.isEmpty) {
+        if (isEmptyTextureVisible) drawRect(Rect(map.position, map.size * options.scale).area(options.hook), red);
+        return;
+    }
+
     auto topLeftWorldPoint = camera.topLeftPoint;
     auto bottomRightWorldPoint = camera.bottomRightPoint;
     auto textureColCount = texture.width / map.tileWidth;

source/parin/sprite.d

@@ -147,6 +147,10 @@ struct Sprite {
 
 void drawSpriteX(Texture texture, Sprite sprite, DrawOptions options = DrawOptions()) {
     if (sprite.width == 0 || sprite.height == 0) return;
+    if (texture.isEmpty) {
+        if (isEmptyTextureVisible) drawRect(Rect(sprite.position, sprite.size * options.scale).area(options.hook), green);
+        return;
+    }
 
     auto top = sprite.atlasTop + sprite.animation.frameRow * sprite.height;
     auto gridWidth = max(texture.width - sprite.atlasLeft, 0) / sprite.width;