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Class cleanup and comments

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This commit is contained in:
MagicBot
2023-10-11 11:32:43 -04:00
parent 823061c699
commit b9ef4eee63
1 changed files with 26 additions and 19 deletions
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src/engine/InterestManagement/Terrain.java
+26 -19
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@@ -39,18 +39,24 @@ public class Terrain {
this.heightmap = this.zone.terrain_image;
// Configure PLANAR
// Configure PLANAR zones to use the same
// 16x16 pixel image that all other flat
// terrains share.
if (this.zone.terrain_type.equals("PLANAR"))
this.heightmap = 1006300;
this.terrain_size.x = this.zone.major_radius * 2;
this.terrain_size.y = this.zone.minor_radius * 2;
// Load pixel data for this terrain from cache
this.terrain_pixel_data = Terrain._heightmap_pixel_cache.get(heightmap);
if (terrain_pixel_data == null)
Logger.error("Pixel map empty for zone: " + zone.getObjectUUID() + ":" + zone.zoneName);
Logger.error("Pixel map empty for zone: " + this.zone.getObjectUUID() + ":" + this.zone.zoneName);
// Configure terrain based on zone properties
this.terrain_size.x = this.zone.major_radius * 2;
this.terrain_size.y = this.zone.minor_radius * 2;
this.cell_count.x = this.terrain_pixel_data.length - 1;
this.cell_count.y = this.terrain_pixel_data[0].length - 1;
@@ -67,6 +73,10 @@ public class Terrain {
public static Zone getNextZoneWithTerrain(Zone zone) {
// Not all zones have a terrain. Some are for display only
// and heights returned are from the parent heightmap. This
// is controlled in the JSON via the has_terrain_gen field.
Zone terrain_zone = zone;
if (zone == null)
@@ -88,9 +98,7 @@ public class Terrain {
Zone terrainZone;
// Retrieve the next zone with a heightmap attached.
// Zones without a heightmap use the next zone up the
// tree to calculate heights from.
// Retrieve the next zone with a terrain defined.
terrainZone = getNextZoneWithTerrain(currentZone);
@@ -136,11 +144,10 @@ public class Terrain {
Vector2f terrain_cell = getTerrainCell(terrainLoc);
int gridX = (int) Math.floor(terrain_cell.x);
int gridY = (int) Math.floor(terrain_cell.y);
int pixel_x = (int) Math.floor(terrain_cell.x);
int pixel_t = (int) Math.floor(terrain_cell.y);
float offsetX = terrain_cell.x % 1;
float offsetY = terrain_cell.y % 1;
Vector2f pixel_offset = new Vector2f(terrain_cell.x % 1, terrain_cell.y % 1);
//get 4 surrounding vertices from the pixel array.
@@ -149,17 +156,17 @@ public class Terrain {
float bottomLeftHeight;
float bottomRightHeight;
topLeftHeight = terrain_pixel_data[gridX][gridY];
topRightHeight = terrain_pixel_data[gridX + 1][gridY];
bottomLeftHeight = terrain_pixel_data[gridX][gridY + 1];
bottomRightHeight = terrain_pixel_data[gridX + 1][gridY + 1];
topLeftHeight = terrain_pixel_data[pixel_x][pixel_t];
topRightHeight = terrain_pixel_data[pixel_x + 1][pixel_t];
bottomLeftHeight = terrain_pixel_data[pixel_x][pixel_t + 1];
bottomRightHeight = terrain_pixel_data[pixel_x + 1][pixel_t + 1];
// Interpolate between the 4 vertices
interpolatedHeight = topLeftHeight * (1 - offsetX) * (1 - offsetY);
interpolatedHeight += topRightHeight * (1 - offsetY) * (offsetX);
interpolatedHeight += (bottomLeftHeight * (1 - offsetX) * offsetY);
interpolatedHeight += (bottomRightHeight * offsetY * offsetX);
interpolatedHeight = topLeftHeight * (1 - pixel_offset.x) * (1 - pixel_offset.y);
interpolatedHeight += topRightHeight * (1 - pixel_offset.y) * (pixel_offset.x);
interpolatedHeight += (bottomLeftHeight * (1 - pixel_offset.x) * pixel_offset.y);
interpolatedHeight += (bottomRightHeight * pixel_offset.y * pixel_offset.x);
interpolatedHeight *= this.terrain_scale; // Scale height