ref: fb2d7b8e8a87528b180a3cd55f8011336573ba7b
parent: 8391cc5ac8ad74fa3d08c7228cb4a30ac657c56f
author: Olav Sørensen <olav.sorensen@live.no>
date: Fri Feb 23 12:25:53 EST 2024
"about screen" changes
--- a/src/ft2_about.c
+++ b/src/ft2_about.c
@@ -2,19 +2,18 @@
#include <math.h>
#include "ft2_header.h"
#include "ft2_gui.h"
-#include "ft2_pattern_ed.h"
#include "ft2_bmp.h"
#include "ft2_video.h"
#include "ft2_structs.h"
+#include "ft2_pattern_ed.h" // exitPatternEditorExtended()
-#define NUM_STARS 3000
-#define ALPHA_FADE_MILLISECS 2000 /* amount of milliseconds until content is fully faded in */
+#define NUM_STARS 2000
+#define ABOUT_SCREEN_X 3
+#define ABOUT_SCREEN_Y 3
#define ABOUT_SCREEN_W 626
#define ABOUT_SCREEN_H 167
#define ABOUT_LOGO_W 449
#define ABOUT_LOGO_H 110
-#define ABOUT_TEXT_W 349
-#define ABOUT_TEXT_H 29
typedef struct
{@@ -30,7 +29,7 @@
static char *customText2 = "https://16-bits.org";
static char customText3[256];
static int16_t customText1Y, customText2Y, customText3Y, customText1X, customText2X, customText3X;
-static uint32_t logoTimer, alphaValue, randSeed, frameCounter;
+static uint32_t randSeed;
static vector_t starPoints[NUM_STARS], rotation;
static matrix_t matrix;
@@ -48,19 +47,19 @@
static void rotateMatrix(void)
{-#define MY_PI_FLOAT 3.141592653589793f
+#define MY_2PI_FLOAT 6.2831853071796f
- const float xx = rotation.x * MY_PI_FLOAT;
- const float sa = sinf(xx);
- const float ca = cosf(xx);
+ const float x2pi = rotation.x * MY_2PI_FLOAT;
+ const float sa = sinf(x2pi);
+ const float ca = cosf(x2pi);
- const float yy = rotation.y * MY_PI_FLOAT;
- const float sb = sinf(yy);
- const float cb = cosf(yy);
+ const float y2pi = rotation.y * MY_2PI_FLOAT;
+ const float sb = sinf(y2pi);
+ const float cb = cosf(y2pi);
- const float zz = rotation.z * MY_PI_FLOAT;
- const float sc = sinf(zz);
- const float cc = cosf(zz);
+ const float z2pi = rotation.z * MY_2PI_FLOAT;
+ const float sc = sinf(z2pi);
+ const float cc = cosf(z2pi);
// x
matrix.x.x = (ca * cc) + (sc * sa * sb);
@@ -78,7 +77,7 @@
matrix.z.z = cb * cc;
}
-static void aboutInit(void)
+void initAboutScreen(void)
{vector_t *s = starPoints;
for (int32_t i = 0; i < NUM_STARS; i++, s++)
@@ -87,26 +86,21 @@
s->y = (float)(random32() * (1.0 / (UINT32_MAX+1.0)));
s->z = (float)(random32() * (1.0 / (UINT32_MAX+1.0)));
}
-
- rotation.x = rotation.y = rotation.z = 0.0f;
- alphaValue = 0;
- frameCounter = 0;
- logoTimer = 0;
}
-static void blendPixel(int32_t x, int32_t y, int32_t r, int32_t g, int32_t b, int32_t alpha)
+static void blendPixel(int32_t x, int32_t y, uint32_t r, uint32_t g, uint32_t b, uint16_t alpha)
{uint32_t *p = &video.frameBuffer[(y * SCREEN_W) + x];
const uint32_t srcPixel = *p;
- const int32_t srcR = RGB32_R(srcPixel);
- const int32_t srcG = RGB32_G(srcPixel);
- const int32_t srcB = RGB32_B(srcPixel);
+ const uint32_t srcR = RGB32_R(srcPixel);
+ const uint32_t srcG = RGB32_G(srcPixel);
+ const uint32_t srcB = RGB32_B(srcPixel);
- r = ((srcR * (65536-alpha)) + (r * alpha)) >> 16;
- g = ((srcG * (65536-alpha)) + (g * alpha)) >> 16;
- b = ((srcB * (65536-alpha)) + (b * alpha)) >> 16;
+ r = ((srcR * (alpha ^ 65535)) + (r * alpha)) >> 16;
+ g = ((srcG * (alpha ^ 65535)) + (g * alpha)) >> 16;
+ b = ((srcB * (alpha ^ 65535)) + (b * alpha)) >> 16;
*p = RGB32(r, g, b);
}
@@ -116,7 +110,7 @@
vector_t *star = starPoints;
for (int16_t i = 0; i < NUM_STARS; i++, star++)
{- star->z += 0.00015f;
+ star->z += 0.0001f;
if (star->z >= 0.5f)
star->z -= 1.0f;
@@ -124,18 +118,17 @@
if (z <= 0.0f)
continue;
- float y = (ABOUT_SCREEN_H/2.0f) + ((((matrix.x.y * star->x) + (matrix.y.y * star->y) + (matrix.z.y * star->z)) / z) * 400.0f);
- const int32_t outY = (int32_t)y;
- if (outY < 3 || outY >= 3+ABOUT_SCREEN_H)
+ float y = (((matrix.x.y * star->x) + (matrix.y.y * star->y) + (matrix.z.y * star->z)) / z) * 400.0f;
+ const int32_t outY = (ABOUT_SCREEN_Y+(ABOUT_SCREEN_H/2)) + (int32_t)y;
+ if (outY < ABOUT_SCREEN_Y || outY >= ABOUT_SCREEN_Y+ABOUT_SCREEN_H)
continue;
- float x = (ABOUT_SCREEN_W/2.0f) + ((((matrix.x.x * star->x) + (matrix.y.x * star->y) + (matrix.z.x * star->z)) / z) * 400.0f);
-
- const int32_t outX = (int32_t)x;
- if (outX < 3 || outX >= 3+ABOUT_SCREEN_W)
+ float x = (((matrix.x.x * star->x) + (matrix.y.x * star->y) + (matrix.z.x * star->z)) / z) * 400.0f;
+ const int32_t outX = (ABOUT_SCREEN_X+(ABOUT_SCREEN_W/2)) + (int32_t)x;
+ if (outX < ABOUT_SCREEN_X || outX >= ABOUT_SCREEN_X+ABOUT_SCREEN_W)
continue;
- int32_t d = (int32_t)(z * 255.0f);
+ int32_t d = (int32_t)(z * 256.0f);
if (d > 255)
d = 255;
d ^= 255;
@@ -156,18 +149,18 @@
// blend sides of star
- const int32_t sidesAlpha = 13000;
+ const uint16_t sidesAlpha = 13000;
- if (outX-1 >= 3)
+ if (outX-1 >= ABOUT_SCREEN_X)
blendPixel(outX-1, outY, r, g, b, sidesAlpha);
- if (outX+1 < 3+ABOUT_SCREEN_W)
+ if (outX+1 < ABOUT_SCREEN_X+ABOUT_SCREEN_W)
blendPixel(outX+1, outY, r, g, b, sidesAlpha);
- if (outY-1 >= 3)
+ if (outY-1 >= ABOUT_SCREEN_Y)
blendPixel(outX, outY-1, r, g, b, sidesAlpha);
- if (outY+1 < 3+ABOUT_SCREEN_H)
+ if (outY+1 < ABOUT_SCREEN_Y+ABOUT_SCREEN_H)
blendPixel(outX, outY+1, r, g, b, sidesAlpha);
// plot main star pixel
@@ -175,34 +168,23 @@
}
}
-void aboutFrame(void) // called every frame when the about screen is shown
+void renderAboutScreenFrame(void)
{- clearRect(3, 3, ABOUT_SCREEN_W, ABOUT_SCREEN_H);
+ // remember the good old days when you couldn't do this per frame?
+ clearRect(ABOUT_SCREEN_X, ABOUT_SCREEN_Y, ABOUT_SCREEN_W, ABOUT_SCREEN_H);
// 3D starfield
rotateMatrix();
+ rotation.x -= 0.00006f;
+ rotation.z += 0.00003f;
starfield();
- rotation.x -= 0.00011f;
- rotation.z += 0.00006f;
// logo + text
- blit32Alpha(91, 31, bmp.ft2AboutLogo, ABOUT_LOGO_W, ABOUT_LOGO_H, alphaValue);
- textOutAlpha(customText1X, customText1Y, PAL_FORGRND, customText1, alphaValue);
- textOutAlpha(customText2X, customText2Y, PAL_FORGRND, customText2, alphaValue);
- textOutAlpha(customText3X, customText3Y, PAL_FORGRND, customText3, alphaValue);
+ blit32(91, 31, bmp.ft2AboutLogo, ABOUT_LOGO_W, ABOUT_LOGO_H);
+ textOut(customText1X, customText1Y, PAL_FORGRND, customText1);
+ textOut(customText2X, customText2Y, PAL_FORGRND, customText2);
+ textOut(customText3X, customText3Y, PAL_FORGRND, customText3);
- if (logoTimer > (int32_t)(VBLANK_HZ/4.0))
- {- alphaValue += (uint32_t)((65536.0 / (ALPHA_FADE_MILLISECS / (1000.0 / VBLANK_HZ))) + 0.5);
- if (alphaValue > 65536)
- alphaValue = 65536;
- }
- else
- {- logoTimer++;
- }
-
- // the exit button has to be redrawn since it gets overwritten :)
showPushButton(PB_EXIT_ABOUT);
}
@@ -226,7 +208,6 @@
customText2Y = 157-12;
customText3Y = 157;
- aboutInit();
ui.aboutScreenShown = true;
}
--- a/src/ft2_about.h
+++ b/src/ft2_about.h
@@ -2,7 +2,8 @@
#include <stdint.h>
-void aboutFrame(void);
+void initAboutScreen(void);
+void renderAboutScreenFrame(void);
void seedAboutScreenRandom(uint32_t newseed);
void showAboutScreen(void);
void hideAboutScreen(void);
--- a/src/ft2_gui.c
+++ b/src/ft2_gui.c
@@ -370,52 +370,6 @@
}
}
-void charOutAlpha(uint16_t xPos, uint16_t yPos, uint8_t paletteIndex, char chr, uint32_t alpha)
-{- assert(xPos < SCREEN_W && yPos < SCREEN_H);
-
- chr &= 0x7F; // this is important to get the nordic glyphs in the font
- if (chr == ' ')
- return;
-
- if (alpha > 65536)
- alpha = 65536;
-
- const uint32_t pixVal = video.palette[paletteIndex];
- const uint32_t palNum = paletteIndex << 24;
- const uint8_t *srcPtr = &bmp.font1[chr * FONT1_CHAR_W];
- uint32_t *dstPtr = &video.frameBuffer[(yPos * SCREEN_W) + xPos];
-
- for (int32_t y = 0; y < FONT1_CHAR_H; y++)
- {- for (int32_t x = 0; x < FONT1_CHAR_W; x++)
- {- const uint32_t srcPixel = srcPtr[x];
- if (srcPixel == 0)
- continue;
-
- const uint32_t dstPixel = dstPtr[x];
-
- const int32_t srcR = RGB32_R(pixVal);
- const int32_t srcG = RGB32_G(pixVal);
- const int32_t srcB = RGB32_B(pixVal);
-
- int32_t dstR = RGB32_R(dstPixel);
- int32_t dstG = RGB32_G(dstPixel);
- int32_t dstB = RGB32_B(dstPixel);
-
- dstR = ((dstR * (65536-alpha)) + (srcR * alpha)) >> 16;
- dstG = ((dstG * (65536-alpha)) + (srcG * alpha)) >> 16;
- dstB = ((dstB * (65536-alpha)) + (srcB * alpha)) >> 16;
-
- dstPtr[x] = RGB32(dstR, dstG, dstB) | palNum;
- }
-
- srcPtr += FONT1_WIDTH;
- dstPtr += SCREEN_W;
- }
-}
-
void charOutBg(uint16_t xPos, uint16_t yPos, uint8_t fgPalette, uint8_t bgPalette, char chr)
{assert(xPos < SCREEN_W && yPos < SCREEN_H);
@@ -585,31 +539,6 @@
}
}
-void textOutAlpha(uint16_t x, uint16_t y, uint8_t paletteIndex, const char *textPtr, uint32_t alpha)
-{- char chr;
- uint16_t currX;
-
- assert(textPtr != NULL);
-
- if (alpha >= 65536)
- {- textOut(x, y, paletteIndex, textPtr);
- return;
- }
-
- currX = x;
- while (true)
- {- chr = *textPtr++;
- if (chr == '\0')
- break;
-
- charOutAlpha(currX, y, paletteIndex, chr, alpha);
- currX += charWidth(chr);
- }
-}
-
void textOutBorder(uint16_t x, uint16_t y, uint8_t paletteIndex, uint8_t borderPaletteIndex, const char *textPtr)
{textOut(x, y-1, borderPaletteIndex, textPtr); // top
@@ -805,47 +734,6 @@
{if (srcPtr[x] != 0x00FF00)
dstPtr[x] = srcPtr[x] | 0xFF000000; // most significant 8 bits = palette number. 0xFF because no true palette
- }
-
- srcPtr += w;
- dstPtr += SCREEN_W;
- }
-}
-
-void blit32Alpha(uint16_t xPos, uint16_t yPos, const uint32_t *srcPtr, uint16_t w, uint16_t h, uint32_t alpha)
-{- assert(srcPtr != NULL && xPos < SCREEN_W && yPos < SCREEN_H && (xPos + w) <= SCREEN_W && (yPos + h) <= SCREEN_H);
-
- if (alpha >= 65536)
- {- blit32(xPos, yPos, srcPtr, w, h);
- return;
- }
-
- uint32_t *dstPtr = &video.frameBuffer[(yPos * SCREEN_W) + xPos];
- for (int32_t y = 0; y < h; y++)
- {- for (int32_t x = 0; x < w; x++)
- {- const uint32_t srcPixel = srcPtr[x];
- if (srcPixel == 0x00FF00)
- continue;
-
- const uint32_t dstPixel = dstPtr[x];
-
- const int32_t srcR = RGB32_R(srcPixel);
- const int32_t srcG = RGB32_G(srcPixel);
- const int32_t srcB = RGB32_B(srcPixel);
-
- int32_t dstR = RGB32_R(dstPixel);
- int32_t dstG = RGB32_G(dstPixel);
- int32_t dstB = RGB32_B(dstPixel);
-
- dstR = ((dstR * (65536-alpha)) + (srcR * alpha)) >> 16;
- dstG = ((dstG * (65536-alpha)) + (srcG * alpha)) >> 16;
- dstB = ((dstB * (65536-alpha)) + (srcB * alpha)) >> 16;
-
- dstPtr[x] = RGB32(dstR, dstG, dstB) | 0xFF000000; // most significant 8 bits = palette number. 0xFF because no true palette
}
srcPtr += w;
--- a/src/ft2_gui.h
+++ b/src/ft2_gui.h
@@ -80,7 +80,6 @@
void fillRect(uint16_t xPos, uint16_t yPos, uint16_t w, uint16_t h, uint8_t paletteIndex);
void drawFramework(uint16_t x, uint16_t y, uint16_t w, uint16_t h, uint8_t type);
void blit32(uint16_t xPos, uint16_t yPos, const uint32_t *srcPtr, uint16_t w, uint16_t h);
-void blit32Alpha(uint16_t xPos, uint16_t yPos, const uint32_t *srcPtr, uint16_t w, uint16_t h, uint32_t alpha);
void blit(uint16_t xPos, uint16_t yPos, const uint8_t *srcPtr, uint16_t w, uint16_t h);
void blitClipX(uint16_t xPos, uint16_t yPos, const uint8_t *srcPtr, uint16_t w, uint16_t h, uint16_t clipX);
void blitFast(uint16_t xPos, uint16_t yPos, const uint8_t *srcPtr, uint16_t w, uint16_t h); // no transparency/colorkey
@@ -91,7 +90,6 @@
void textOutTiny(int32_t xPos, int32_t yPos, char *str, uint32_t color); // A..Z/a..z and 0..9
void textOutTinyOutline(int32_t xPos, int32_t yPos, char *str); // A..Z/a..z and 0..9
void charOut(uint16_t xPos, uint16_t yPos, uint8_t paletteIndex, char chr);
-void charOutAlpha(uint16_t xPos, uint16_t yPos, uint8_t paletteIndex, char chr, uint32_t alpha);
void charOutBg(uint16_t xPos, uint16_t yPos, uint8_t fgPalette, uint8_t bgPalette, char chr);
void charOutShadow(uint16_t xPos, uint16_t yPos, uint8_t paletteIndex, uint8_t shadowPaletteIndex, char chr);
void charOutClipX(uint16_t xPos, uint16_t yPos, uint8_t paletteIndex, char chr, uint16_t clipX);
@@ -99,7 +97,6 @@
void charOutShadow(uint16_t x, uint16_t y, uint8_t paletteIndex, uint8_t shadowPaletteIndex, char chr);
void charOutOutlined(uint16_t x, uint16_t y, uint8_t paletteIndex, char chr);
void textOut(uint16_t x, uint16_t y, uint8_t paletteIndex, const char *textPtr);
-void textOutAlpha(uint16_t x, uint16_t y, uint8_t paletteIndex, const char *textPtr, uint32_t alpha);
void textOutBorder(uint16_t x, uint16_t y, uint8_t paletteIndex, uint8_t borderPaletteIndex, const char *textPtr);
void textOutFixed(uint16_t x, uint16_t y, uint8_t fgPaltete, uint8_t bgPalette, const char *textPtr);
void bigTextOut(uint16_t x, uint16_t y, uint8_t paletteIndex, const char *textPtr);
--- a/src/ft2_main.c
+++ b/src/ft2_main.c
@@ -213,6 +213,7 @@
return 1;
}
+ initAboutScreen();
pauseAudio();
resumeAudio();
rescanAudioDevices();
--- a/src/ft2_video.c
+++ b/src/ft2_video.c
@@ -1055,7 +1055,7 @@
{if (ui.aboutScreenShown)
{- aboutFrame();
+ renderAboutScreenFrame();
}
else if (ui.nibblesShown)
{