303 lines
7.3 KiB
C
303 lines
7.3 KiB
C
/*
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Copyright (C) 2018 Parallel Realities
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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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.
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See the GNU General Public License for more details.
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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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#include "draw.h"
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static void initColor(SDL_Color *c, int r, int g, int b);
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static PointF backgroundPoint[4];
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void initBackground(void)
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{
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backgroundPoint[0].x = -app.config.winWidth / 2;
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backgroundPoint[0].y = -app.config.winHeight / 2;
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backgroundPoint[1].x = app.config.winWidth / 2;
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backgroundPoint[1].y = -app.config.winHeight / 2;
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backgroundPoint[2].x = -app.config.winWidth / 2;
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backgroundPoint[2].y = app.config.winHeight / 2;
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backgroundPoint[3].x = app.config.winWidth / 2;
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backgroundPoint[3].y = app.config.winHeight / 2;
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}
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void initGraphics(void)
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{
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initColor(&colors.red, 255, 0, 0);
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initColor(&colors.orange, 255, 128, 0);
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initColor(&colors.yellow, 255, 255, 0);
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initColor(&colors.green, 0, 255, 0);
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initColor(&colors.blue, 0, 0, 255);
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initColor(&colors.cyan, 0, 255, 255);
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initColor(&colors.purple, 255, 0, 255);
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initColor(&colors.white, 255, 255, 255);
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initColor(&colors.black, 0, 0, 0);
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initColor(&colors.lightGrey, 192, 192, 192);
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initColor(&colors.darkGrey, 128, 128, 128);
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app.backBuffer = SDL_CreateTexture(app.renderer, SDL_PIXELFORMAT_RGBA8888, SDL_TEXTUREACCESS_TARGET, app.config.winWidth, app.config.winHeight);
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app.uiBuffer = SDL_CreateTexture(app.renderer, SDL_PIXELFORMAT_RGBA8888, SDL_TEXTUREACCESS_TARGET, UI_WIDTH, UI_HEIGHT);
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SDL_SetTextureBlendMode(app.uiBuffer, SDL_BLENDMODE_BLEND);
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app.uiOffset.x = (app.config.winWidth / 2) - (UI_WIDTH / 2);
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app.uiOffset.y = (app.config.winHeight / 2) - (UI_HEIGHT / 2);
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}
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void prepareScene(void)
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{
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SDL_SetRenderTarget(app.renderer, app.uiBuffer);
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SDL_SetRenderDrawColor(app.renderer, 0, 0, 0, 0);
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SDL_RenderClear(app.renderer);
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SDL_SetRenderTarget(app.renderer, app.backBuffer);
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SDL_SetRenderDrawColor(app.renderer, 0, 0, 0, 255);
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SDL_RenderClear(app.renderer);
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}
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void presentScene(void)
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{
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SDL_Rect uiDest;
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uiDest.w = UI_WIDTH;
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uiDest.h = UI_HEIGHT;
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uiDest.x = (app.config.winWidth / 2) - (UI_WIDTH / 2);
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uiDest.y = (app.config.winHeight / 2) - (UI_HEIGHT / 2);
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if (dev.debug)
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{
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drawText(5, app.config.winHeight - 25, 14, TA_LEFT, colors.white, "DEBUG MODE");
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if (dev.showFPS)
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{
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drawText(app.config.winWidth - 5, app.config.winHeight - 25, 14, TA_RIGHT, colors.white, "FPS: %d", dev.fps);
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}
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}
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SDL_SetRenderTarget(app.renderer, NULL);
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SDL_RenderCopy(app.renderer, app.backBuffer, NULL, NULL);
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SDL_RenderCopy(app.renderer, app.uiBuffer, NULL, &uiDest);
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SDL_RenderPresent(app.renderer);
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}
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void clearScreen(void)
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{
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SDL_SetRenderDrawBlendMode(app.renderer, SDL_BLENDMODE_NONE);
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SDL_SetRenderDrawColor(app.renderer, 0, 0, 0, 255);
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SDL_RenderFillRect(app.renderer, NULL);
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}
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void blit(SDL_Texture *texture, int x, int y, int center)
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{
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SDL_Rect dstRect;
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dstRect.x = x;
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dstRect.y = y;
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SDL_QueryTexture(texture, NULL, NULL, &dstRect.w, &dstRect.h);
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if (center)
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{
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dstRect.x -= (dstRect.w / 2);
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dstRect.y -= (dstRect.h / 2);
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}
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SDL_RenderCopy(app.renderer, texture, NULL, &dstRect);
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}
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void blitRect(SDL_Texture *texture, int x, int y, SDL_Rect *srcRect, int center)
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{
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SDL_Rect dstRect;
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dstRect.x = x;
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dstRect.y = y;
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dstRect.w = srcRect->w;
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dstRect.h = srcRect->h;
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if (center)
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{
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dstRect.x -= (dstRect.w / 2);
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dstRect.y -= (dstRect.h / 2);
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}
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SDL_RenderCopy(app.renderer, texture, srcRect, &dstRect);
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}
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void blitRectRotated(SDL_Texture *texture, int x, int y, SDL_Rect *srcRect, float angle)
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{
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SDL_Rect dstRect;
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dstRect.x = x;
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dstRect.y = y;
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dstRect.w = srcRect->w;
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dstRect.h = srcRect->h;
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dstRect.x -= (srcRect->w / 2);
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dstRect.y -= (srcRect->h / 2);
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SDL_RenderCopyEx(app.renderer, texture, srcRect, &dstRect, angle, NULL, SDL_FLIP_NONE);
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}
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void blitScaled(SDL_Texture *texture, int x, int y, int w, int h, int center)
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{
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SDL_Rect dstRect;
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dstRect.x = x;
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dstRect.y = y;
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dstRect.w = w;
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dstRect.h = h;
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if (center)
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{
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dstRect.x -= (dstRect.w / 2);
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dstRect.y -= (dstRect.h / 2);
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}
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SDL_RenderCopy(app.renderer, texture, NULL, &dstRect);
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}
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void blitRectScaled(SDL_Texture *texture, int x, int y, int w, int h, SDL_Rect *srcRect, int center)
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{
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SDL_Rect dstRect;
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dstRect.x = x;
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dstRect.y = y;
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dstRect.w = w;
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dstRect.h = h;
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if (center)
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{
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dstRect.x -= (dstRect.w / 2);
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dstRect.y -= (dstRect.h / 2);
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}
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SDL_RenderCopy(app.renderer, texture, srcRect, &dstRect);
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}
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void drawLine(int x1, int y1, int x2, int y2, int r, int g, int b, int a)
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{
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SDL_SetRenderDrawColor(app.renderer, r, g, b, a);
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SDL_RenderDrawLine(app.renderer, x1, y1, x2, y2);
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}
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void drawRect(int x, int y, int w, int h, int r, int g, int b, int a)
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{
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SDL_Rect rect;
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rect.x = x;
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rect.y = y;
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rect.w = w;
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rect.h = h;
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SDL_SetRenderDrawBlendMode(app.renderer, a < 255 ? SDL_BLENDMODE_BLEND : SDL_BLENDMODE_NONE);
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SDL_SetRenderDrawColor(app.renderer, r, g, b, a);
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SDL_RenderFillRect(app.renderer, &rect);
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}
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void drawOutlineRect(int x, int y, int w, int h, int r, int g, int b, int a)
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{
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SDL_Rect rect;
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rect.x = x;
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rect.y = y;
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rect.w = w;
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rect.h = h;
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SDL_SetRenderDrawBlendMode(app.renderer, a < 255 ? SDL_BLENDMODE_BLEND : SDL_BLENDMODE_NONE);
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SDL_SetRenderDrawColor(app.renderer, r, g, b, a);
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SDL_RenderDrawRect(app.renderer, &rect);
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}
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void scrollBackground(float x, float y)
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{
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int i;
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for (i = 0 ; i < 4 ; i++)
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{
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backgroundPoint[i].x += x;
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backgroundPoint[i].y += y;
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if (backgroundPoint[i].x < 0)
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{
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backgroundPoint[i].x += (app.config.winWidth * 2);
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}
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if (backgroundPoint[i].x >= app.config.winWidth)
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{
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backgroundPoint[i].x -= (app.config.winWidth * 2);
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}
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if (backgroundPoint[i].y < 0)
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{
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backgroundPoint[i].y += (app.config.winHeight * 2);
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}
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if (backgroundPoint[i].y >= app.config.winHeight)
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{
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backgroundPoint[i].y -= (app.config.winHeight * 2);
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}
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}
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}
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void drawBackground(SDL_Texture *texture)
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{
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int i;
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SDL_Rect dstRect;
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for (i = 0 ; i < 4 ; i++)
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{
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dstRect.x = backgroundPoint[i].x;
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dstRect.y = backgroundPoint[i].y;
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dstRect.w = app.config.winWidth - 1;
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dstRect.h = app.config.winHeight - 1;
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SDL_RenderCopy(app.renderer, texture, NULL, &dstRect);
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}
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}
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static void initColor(SDL_Color *c, int r, int g, int b)
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{
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memset(c, 0, sizeof(SDL_Color));
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c->r = r;
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c->g = g;
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c->b = b;
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c->a = 255;
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}
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void saveScreenshot(char *name)
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{
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char *filename;
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SDL_Surface *screenshot;
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if (name != NULL)
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{
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filename = buildFormattedString("%s/%d/%s.png", app.saveDir, game.saveSlot, name);
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}
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else
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{
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filename = buildFormattedString("%s/%d.png", dev.screenshotFolder, SDL_GetTicks());
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}
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screenshot = SDL_CreateRGBSurface(0, SCREEN_WIDTH, SCREEN_HEIGHT, 32, 0x00ff0000, 0x0000ff00, 0x000000ff, 0xff000000);
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SDL_RenderReadPixels(app.renderer, NULL, SDL_PIXELFORMAT_ARGB8888, screenshot->pixels, screenshot->pitch);
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SDL_SavePNG(screenshot, filename);
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SDL_FreeSurface(screenshot);
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free(filename);
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}
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