* Basic Game State Implementation

* Code Refactoring
2021-08-02 13:48:25 +05:30
parent 2ff207a1d3
commit 7d988900e2
5 changed files with 48 additions and 18 deletions
--- a/level_map.wren
+++ b/level_map.wren
@@ -0,0 +1,58 @@
+import "json" for Json
+import "graphics" for ImageData
+import "math" for Math
+import "./layer_type" for LayerType
+
+class LevelMap {
+    construct new(mapName) {
+        _mapData = Json.load("assets/%(mapName).json")
+        var tileSheetData =  _mapData["tilesets"][0] // Assuming there is only a single tilesheet/level
+        _tileSheet = ImageData.loadFromFile("assets/%(tileSheetData["image"])")
+        _tileSheetH = tileSheetData["imageheight"]
+        _tileSheetW = tileSheetData["imagewidth"]
+        _tileH = tileSheetData["tileheight"]
+        _tileW = tileSheetData["tilewidth"]
+        _mapHeight = _mapData["height"]
+        _mapWidth = _mapData["width"]
+        _layers = _mapData["layers"]
+        _rows = Math.floor(_tileSheetW/_tileW)
+        _cols = Math.floor(_tileSheetH/_tileH)
+    }
+
+    draw(x, y) {
+        var startX = x
+        var startY = y
+        for(layer in _layers) {
+            var index = 0        
+            for(mapYV in 0...(_mapHeight)) {
+                for(mapXV in 0...(_mapWidth)) {
+                    if((layer["type"] == LayerType.Tile) && (layer["visible"] == true)) {
+                        var tileIndex = layer["data"][index]
+                        if (tileIndex > 0) {
+                            drawTile(tileIndex-1, x, y)
+                        }
+                    }
+                    index = index + 1
+                    x = x + 16
+                }
+                y = y + 16
+                x = startX
+            }
+            x = startX
+            y = startY
+        }
+    }
+
+    drawTile(tileIndex, mapX, mapY) {
+        var spriteX = (tileIndex % _rows)
+        var spriteY = Math.floor ((tileIndex - spriteX) % _cols)
+        _tileSheet.transform({
+            "srcX": spriteX * 16,
+            "srcY": spriteY * 16,
+            "srcW": _tileW,
+            "srcH": _tileH,
+            "scaleX": 1,
+            "scaleY": 1
+        }).draw(mapX,mapY)
+    }
+}