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Fixed tile map and added extra function.

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Kapendev 2024-08-26 15:14:38 +03:00
parent ffb694fb1e
commit a24a8efe1f
3 changed files with 50 additions and 51 deletions
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29
examples/map.d
View file

@ -4,19 +4,12 @@ import popka;
// The game variables.
auto atlas = Texture();
auto map = TileMap();
auto camera = Camera();
auto cameraSpeed = Vec2(120);
bool gameLoop() {
// Move the camera and set up the drawing options of the game.
camera.position += wasd * cameraSpeed * Vec2(deltaTime);
auto options = DrawOptions();
options.scale = Vec2(2);
// Passing a camera to the tile map drawing function allows for efficient rendering by only drawing the tiles that are currently in view.
attachCamera(camera);
drawTileMap(atlas, Vec2(), map, camera, options);
detachCamera(camera);
auto options = DrawOptions();
options.scale = Vec2(2.0f);
drawTileMap(atlas, Vec2(), map, Camera(), options);
return false;
}
@ -24,21 +17,13 @@ void gameStart() {
lockResolution(320, 180);
setBackgroundColor(toRgb(0x0b0b0b));
// Loads the `atlas.png` texture from the assets folder.
auto result = loadTexture("atlas.png");
if (result.isSome) {
atlas = result.unwrap();
} else {
printfln("Can not load texture. Fault: `{}`", result.fault);
}
// Parse the tile map data and set the tile size.
map.parse("145,0,65\n21,22,23\n37,38,39\n53,54,55");
map.tileWidth = 16;
map.tileHeight = 16;
// Loads the `atlas.png` file from the assets folder and parses the tile map data.
atlas = loadTexture("atlas.png").unwrap();
map.parse("145,0,65\n21,22,23\n37,38,39\n53,54,55", 16, 16);
updateWindow!gameLoop();
atlas.free();
map.free();
}
mixin callGameStart!(gameStart, 640, 360);

5
source/popka/engine.d
View file

@ -1018,6 +1018,11 @@ int fps() {
return ray.GetFPS();
}
@trusted
double elapsedTime() {
return ray.GetTime();
}
@trusted
float deltaTime() {
return ray.GetFrameTime();

67
source/popka/tilemap.d
View file

@ -38,8 +38,11 @@ struct TileMap {
return tileSize * Vec2(colCount, rowCount);
}
Fault parse(IStr csv) {
Fault parse(IStr csv, int tileWidth, int tileHeight) {
data.clear();
this.tileWidth = 0;
this.tileHeight = 0;
if (csv.length == 0) {
return Fault.invalid;
}
@ -65,23 +68,25 @@ struct TileMap {
auto value = line.skipValue(',').toSigned();
if (value.isNone) {
data.clear();
this.tileWidth = 0;
this.tileHeight = 0;
return Fault.invalid;
}
data[row, col] = cast(short) value.unwrap();
}
}
this.tileWidth = tileWidth;
this.tileHeight = tileHeight;
return Fault.none;
}
}
Result!TileMap toTileMap(IStr csv, int tileWidth, int tileHeight) {
auto value = TileMap();
auto fault = value.parse(csv);
auto fault = value.parse(csv, tileWidth, tileHeight);
if (fault) {
value.free();
}
value.tileWidth = tileWidth;
value.tileHeight = tileHeight;
return Result!TileMap(value, fault);
}
@ -93,46 +98,50 @@ Result!TileMap loadTileMap(IStr path, int tileWidth, int tileHeight) {
return toTileMap(temp.unwrap(), tileWidth, tileHeight);
}
void drawTile(Texture texture, Vec2 position, int tileID, Vec2 tileSize, DrawOptions options = DrawOptions()) {
auto gridWidth = cast(int) (texture.size.x / tileSize.x);
auto gridHeight = cast(int) (texture.size.y / tileSize.y);
void drawTile(Texture texture, Vec2 position, int tileID, int tileWidth, int tileHeight, DrawOptions options = DrawOptions()) {
auto gridWidth = cast(int) (texture.size.x / tileWidth);
auto gridHeight = cast(int) (texture.size.y / tileHeight);
if (gridWidth == 0 || gridHeight == 0) {
return;
}
auto row = tileID / gridWidth;
auto col = tileID % gridWidth;
auto area = Rect(col * tileSize.x, row * tileSize.y, tileSize.x, tileSize.y);
auto area = Rect(col * tileWidth, row * tileHeight, tileWidth, tileHeight);
drawTexture(texture, position, area, options);
}
void drawTileMap(Texture texture, Vec2 position, TileMap tileMap, Camera camera, DrawOptions options = DrawOptions()) {
enum extraTileCount = 1;
void drawTileMap(Texture texture, Vec2 position, TileMap map, Camera camera, DrawOptions options = DrawOptions()) {
auto cameraArea = Rect(camera.position, resolution).area(camera.hook);
auto topLeft = cameraArea.point(Hook.topLeft);
auto bottomRight = cameraArea.point(Hook.bottomRight);
auto col1 = 0;
auto col2 = 0;
auto row1 = 0;
auto row2 = 0;
auto topLeft = cameraArea.topLeftPoint;
auto bottomRight = cameraArea.bottomRightPoint;
auto targetTileWidth = cast(int) (map.tileWidth * options.scale.x);
auto targetTileHeight = cast(int) (map.tileHeight * options.scale.y);
auto targetTileSize = Vec2(targetTileWidth, targetTileHeight);
auto row1 = 0;
auto col1 = 0;
auto row2 = 0;
auto col2 = 0;
if (camera.isAttached) {
col1 = cast(int) floor(clamp((topLeft.x - position.x) / tileMap.tileSize.x - extraTileCount, 0, tileMap.colCount));
col2 = cast(int) floor(clamp((bottomRight.x - position.x) / tileMap.tileSize.x + extraTileCount, 0, tileMap.colCount));
row1 = cast(int) floor(clamp((topLeft.y - position.y) / tileMap.tileSize.y - extraTileCount, 0, tileMap.rowCount));
row2 = cast(int) floor(clamp((bottomRight.y - position.y) / tileMap.tileSize.y + extraTileCount, 0, tileMap.rowCount));
row1 = cast(int) floor(clamp((topLeft.y - position.y) / targetTileHeight, 0, map.rowCount));
col1 = cast(int) floor(clamp((topLeft.x - position.x) / targetTileWidth, 0, map.colCount));
row2 = cast(int) floor(clamp((bottomRight.y - position.y) / targetTileHeight + 1, 0, map.rowCount));
col2 = cast(int) floor(clamp((bottomRight.x - position.x) / targetTileWidth + 1, 0, map.colCount));
} else {
col1 = 0;
col2 = cast(int) tileMap.colCount;
row1 = 0;
row2 = cast(int) tileMap.rowCount;
row1 = cast(int) 0;
col1 = cast(int) 0;
row2 = cast(int) map.rowCount;
col2 = cast(int) map.colCount;
}
if (row1 == row2 || col1 == col2) {
return;
}
foreach (row; row1 .. row2) {
foreach (col; col1 .. col2) {
if (tileMap[row, col] == -1) {
continue;
}
drawTile(texture, position + Vec2(col, row) * tileMap.tileSize * options.scale, tileMap[row, col], tileMap.tileSize, options);
if (map[row, col] == -1) continue;
drawTile(texture, position + Vec2(col, row) * targetTileSize, map[row, col], map.tileWidth, map.tileHeight, options);
}
}
}