author | unc0rr |
Sat, 03 Apr 2010 15:45:50 +0000 | |
changeset 3297 | 0c59b991007e |
parent 3165 | 3ec07a7d8456 |
child 3491 | 4619b1ae99b5 |
permissions | -rw-r--r-- |
1806 | 1 |
(* |
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* Hedgewars, a free turn based strategy game |
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* Copyright (c) 2009 Andrey Korotaev <unC0Rr@gmail.com> |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; version 2 of the License |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA |
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*) |
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||
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{$INCLUDE "options.inc"} |
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unit uLandTexture; |
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interface |
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uses SDLh; |
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procedure UpdateLandTexture(X, Width, Y, Height: LongInt); |
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procedure DrawLand(dX, dY: LongInt); |
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procedure FreeLand; |
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implementation |
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uses uMisc, uLand, uStore, uConsts, GLunit; |
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const TEXSIZE = 256; |
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LANDTEXARW = LAND_WIDTH div TEXSIZE; |
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LANDTEXARH = LAND_HEIGHT div TEXSIZE; |
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var |
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LandTextures: array[0..LANDTEXARW - 1, 0..LANDTEXARH - 1] of |
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record |
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shouldUpdate: boolean; |
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tex: PTexture; |
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end; |
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tmpPixels: array [0..TEXSIZE - 1, 0..TEXSIZE - 1] of LongWord; |
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function Pixels(x, y: Longword): Pointer; |
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var ty: Longword; |
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begin |
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for ty:= 0 to TEXSIZE - 1 do |
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Move(LandPixels[y * TEXSIZE + ty, x * TEXSIZE], tmpPixels[ty, 0], sizeof(Longword) * TEXSIZE); |
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Pixels:= @tmpPixels |
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end; |
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Pixels2 proc, which uses Land array when updating textures
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function Pixels2(x, y: Longword): Pointer; |
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Pixels2 proc, which uses Land array when updating textures
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var tx, ty: Longword; |
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Pixels2 proc, which uses Land array when updating textures
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begin |
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Pixels2 proc, which uses Land array when updating textures
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for ty:= 0 to TEXSIZE - 1 do |
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for tx:= 0 to TEXSIZE - 1 do |
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tmpPixels[ty, tx]:= Land[y * TEXSIZE + ty, x * TEXSIZE + tx] or AMask; |
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Pixels2:= @tmpPixels |
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Pixels2 proc, which uses Land array when updating textures
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end; |
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procedure UpdateLandTexture(X, Width, Y, Height: LongInt); |
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var tx, ty: Longword; |
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begin |
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if (Width <= 0) or (Height <= 0) then exit; |
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TryDo((X >= 0) and (X < LAND_WIDTH), 'UpdateLandTexture: wrong X parameter', true); |
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TryDo(X + Width <= LAND_WIDTH, 'UpdateLandTexture: wrong Width parameter', true); |
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TryDo((Y >= 0) and (Y < LAND_HEIGHT), 'UpdateLandTexture: wrong Y parameter', true); |
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TryDo(Y + Height <= LAND_HEIGHT, 'UpdateLandTexture: wrong Height parameter', true); |
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for ty:= Y div TEXSIZE to (Y + Height - 1) div TEXSIZE do |
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for tx:= X div TEXSIZE to (X + Width - 1) div TEXSIZE do |
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LandTextures[tx, ty].shouldUpdate:= true |
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end; |
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procedure RealLandTexUpdate; |
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var x, y: LongWord; |
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begin |
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if LandTextures[0, 0].tex = nil then |
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for x:= 0 to LANDTEXARW -1 do |
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for y:= 0 to LANDTEXARH - 1 do |
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with LandTextures[x, y] do |
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tex:= NewTexture(TEXSIZE, TEXSIZE, Pixels(x, y)) |
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else |
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for x:= 0 to LANDTEXARW -1 do |
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for y:= 0 to LANDTEXARH - 1 do |
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with LandTextures[x, y] do |
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if shouldUpdate then |
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begin |
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shouldUpdate:= false; |
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glBindTexture(GL_TEXTURE_2D, tex^.id); |
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glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, TEXSIZE, TEXSIZE, GL_RGBA, GL_UNSIGNED_BYTE, Pixels(x, y)); |
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end |
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end; |
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procedure DrawLand(dX, dY: LongInt); |
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var x, y: LongInt; |
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begin |
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RealLandTexUpdate; |
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for x:= 0 to LANDTEXARW -1 do |
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for y:= 0 to LANDTEXARH - 1 do |
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with LandTextures[x, y] do |
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DrawTexture(dX + x * TEXSIZE, dY + y * TEXSIZE, tex) |
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end; |
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procedure FreeLand; |
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var x, y: LongInt; |
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begin |
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for x:= 0 to LANDTEXARW -1 do |
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for y:= 0 to LANDTEXARH - 1 do |
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with LandTextures[x, y] do |
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begin |
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FreeTexture(tex); |
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tex:= nil; |
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end; |
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if LandBackSurface <> nil then |
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SDL_FreeSurface(LandBackSurface); |
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end; |
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end. |