276 lines
6.1 KiB
C
276 lines
6.1 KiB
C
/*
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Copyright (C) 2015-2019 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 initGraphics(void)
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{
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backgroundPoint[0].x = -app.winWidth / 2;
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backgroundPoint[0].y = -app.winHeight / 2;
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backgroundPoint[1].x = app.winWidth / 2;
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backgroundPoint[1].y = -app.winHeight / 2;
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backgroundPoint[2].x = -app.winWidth / 2;
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backgroundPoint[2].y = app.winHeight / 2;
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backgroundPoint[3].x = app.winWidth / 2;
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backgroundPoint[3].y = app.winHeight / 2;
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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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}
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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 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.uiOffset.x;
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uiDest.y = app.uiOffset.y;
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if (dev.debug)
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{
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drawText(5, app.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.winWidth / 2, app.winHeight - 25, 14, TA_CENTER, 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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if (!app.hideMouse)
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{
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drawMouse();
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}
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SDL_RenderPresent(app.renderer);
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}
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void blit(AtlasImage *atlasImage, 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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dstRect.w = atlasImage->rect.w;
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dstRect.h = atlasImage->rect.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, atlasImage->texture, &atlasImage->rect, &dstRect);
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}
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void blitScaled(AtlasImage *atlasImage, 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, atlasImage->texture, &atlasImage->rect, &dstRect);
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}
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void blitRotated(AtlasImage *atlasImage, int x, int y, 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 = atlasImage->rect.w;
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dstRect.h = atlasImage->rect.h;
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dstRect.x -= (dstRect.w / 2);
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dstRect.y -= (dstRect.h / 2);
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SDL_RenderCopyEx(app.renderer, atlasImage->texture, &atlasImage->rect, &dstRect, angle, NULL, SDL_FLIP_NONE);
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}
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void drawCircle(int cx, int cy, int radius, int r, int g, int b, int a)
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{
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int x = radius;
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int y = 0;
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int radiusError = 1 - x;
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SDL_Point p[8];
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SDL_SetRenderDrawColor(app.renderer, r, g, b, a);
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SDL_SetRenderDrawBlendMode(app.renderer, SDL_BLENDMODE_BLEND);
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while (x >= y)
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{
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p[0].x = x + cx; p[0].y = y + cy;
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p[1].x = y + cx; p[1].y = x + cy;
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p[2].x = -x + cx; p[2].y = y + cy;
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p[3].x = -y + cx; p[3].y = x + cy;
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p[4].x = -x + cx; p[4].y = -y + cy;
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p[5].x = -y + cx; p[5].y = -x + cy;
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p[6].x = x + cx; p[6].y = -y + cy;
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p[7].x = y + cx; p[7].y = -x + cy;
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SDL_RenderDrawPoints(app.renderer, p, 8);
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y++;
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if (radiusError < 0)
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{
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radiusError += 2 * y + 1;
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}
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else
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{
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x--;
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radiusError += 2 * (y - x) + 1;
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}
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}
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SDL_SetRenderDrawBlendMode(app.renderer, SDL_BLENDMODE_NONE);
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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.winWidth * 2);
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}
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if (backgroundPoint[i].x >= app.winWidth)
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{
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backgroundPoint[i].x -= (app.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.winHeight * 2);
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}
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if (backgroundPoint[i].y >= app.winHeight)
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{
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backgroundPoint[i].y -= (app.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.winWidth;
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dstRect.h = app.winHeight;
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SDL_RenderCopy(app.renderer, texture, NULL, &dstRect);
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}
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}
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int isOnBattleScreen(int x, int y, int w, int h)
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{
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x -= (w / 2);
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x -= (app.winWidth / 2);
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x -= battle.camera.x;
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y -= (h / 2);
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y -= (app.winHeight / 2);
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y -= battle.camera.y;
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w *= 2;
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w += app.winWidth;
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h *= 2;
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h += app.winHeight;
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return collision(x, y, w, h, 0, 0, app.winWidth, app.winHeight);
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}
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void saveScreenshot(void)
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{
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static int i = 0;
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char filename[MAX_NAME_LENGTH];
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SDL_Surface *sshot;
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sprintf(filename, "/tmp/tbftss/%d.bmp", ++i);
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sshot = SDL_CreateRGBSurface(0, app.winWidth, app.winHeight, 32, 0x00ff0000, 0x0000ff00, 0x000000ff, 0xff000000);
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SDL_RenderReadPixels(app.renderer, NULL, SDL_PIXELFORMAT_ARGB8888, sshot->pixels, sshot->pitch);
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SDL_SaveBMP(sshot, filename);
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SDL_FreeSurface(sshot);
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if (!dev.takeScreenshots)
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{
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printf("Saved '%s'\n", filename);
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}
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}
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