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Implement basic correct isometric rendering

master
Sven Slootweg 9 years ago
parent
commit
7fdf41e040
  1. 86
      map_isometric.js

86
map_isometric.js

@ -4,8 +4,8 @@ if(RadiumEngine !== undefined)
{
this.tile_width = 32;
this.tile_height = 64;
this.width = 20;
this.height = 20;
this.width = 6;
this.height = 6;
this.fill_screen = false;
this.canvas = canvas
@ -58,9 +58,9 @@ if(RadiumEngine !== undefined)
var Redraw = this.Redraw = function()
{
console.log(this)
for(var i = 0; i < 6; i++)
for(var i = 0; i < this.height; i++)
{
for(var r = 0; r < 6; r++)
for(var r = 0; r < this.width; r++)
{
this.DrawTile(r, i);
}
@ -72,10 +72,15 @@ if(RadiumEngine !== undefined)
var pos_x = tile_x * this.tile_width;
var pos_y = tile_y * this.tile_height;
var t1 = new RadiumEngine.Point(pos_x + (this.tile_width / 2), pos_y);
var t1 = this.GetTilePosition(tile_x, tile_y);
var t2 = t1.Add(new RadiumEngine.Point(this.tile_width / 2, this.tile_height / 2));
var t3 = t1.Add(new RadiumEngine.Point(0, this.tile_height));
var t4 = t1.Add(new RadiumEngine.Point(0 - (this.tile_width / 2), this.tile_height / 2));
/*var t1 = new RadiumEngine.Point(pos_x + (this.tile_width / 2), pos_y);
var t2 = new RadiumEngine.Point(pos_x + this.tile_width, pos_y + (this.tile_height / 2));
var t3 = new RadiumEngine.Point(pos_x + (this.tile_width / 2), pos_y + this.tile_height);
var t4 = new RadiumEngine.Point(pos_x, pos_y + (this.tile_height / 2));
var t4 = new RadiumEngine.Point(pos_x, pos_y + (this.tile_height / 2));*/
this.context.beginPath();
@ -85,21 +90,66 @@ if(RadiumEngine !== undefined)
this.context.lineTo(t4.x, t4.y);
this.context.lineTo(t1.x, t1.y);
this.context.lineWidth = 1;
this.context.strokeStyle = "blue";
this.context.stroke();
this.context.beginPath();
switch(tile_y)
{
case 0:
this.context.lineWidth = 1;
break;
case 1:
this.context.lineWidth = 2;
break;
case 2:
this.context.lineWidth = 3;
break;
case 3:
this.context.lineWidth = 4;
break;
case 4:
this.context.lineWidth = 5;
break;
case 5:
this.context.lineWidth = 6;
break;
}
this.context.moveTo(pos_x, pos_y);
this.context.lineTo(pos_x + this.tile_width, pos_y);
this.context.lineTo(pos_x + this.tile_width, pos_y + this.tile_height);
this.context.lineTo(pos_x, pos_y + this.tile_height);
this.context.lineTo(pos_x, pos_y);
switch(tile_x)
{
case 0:
this.context.strokeStyle = "blue";
break;
case 1:
this.context.strokeStyle = "purple";
break;
case 2:
this.context.strokeStyle = "green";
break;
case 3:
this.context.strokeStyle = "red";
break;
case 4:
this.context.strokeStyle = "maroon";
break;
case 5:
this.context.strokeStyle = "black";
break;
}
this.context.lineWidth = 1;
this.context.strokeStyle = "red";
this.context.stroke();
}
this.GetTilePosition = function(tile_x, tile_y)
{
/* Determine base point (0,0) of the isometric diamond. */
base_point = new RadiumEngine.Point((this.width * this.tile_width) / 2, 0);
console.log(base_point);
/* Determine offset for determining starting point for the current row (tile_y coordinate). */
row_offset = new RadiumEngine.Point(0 - ((this.tile_width / 2) * tile_y), (this.tile_height / 2) * tile_y);
console.log(row_offset);
/* Determine specific offset of the specified tile_x coordinate on the tile_y row. */
tile_offset = new RadiumEngine.Point((this.tile_width / 2) * tile_x, (this.tile_height / 2) * tile_x);
console.log(tile_offset);
/* Return the sum of the above to determine the actual tile position on the canvas. */
return base_point.Add(row_offset, tile_offset);
}
}
}
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